A kind of tooling equipment for hoisting circuit breaker on site of air chamber

Abstract

The application relates to the technical field of power equipment installation auxiliary tools, and discloses a tooling device for on-site hoisting of a circuit breaker of an air-filled cabinet, which comprises a moving frame, a cantilever frame, first supporting pieces, second supporting pieces and a hoisting assembly. The moving frame comprises a counterweight frame and moving wheels; the cantilever frame is used for bearing a circuit breaker box and is connected with a sealing plate of the circuit breaker box through a connecting sheet; the first and second supporting pieces are horizontally supported below and at the tail end of a solid-sealed pole respectively; and the hoisting assembly is connected with the upper end of the pole and the sealing plate. The tooling forms a movable stable operation platform, can safely and efficiently complete the disassembly and assembly of the circuit breaker in a narrow field through multi-point collaborative support and hoisting, effectively protects the solid-sealed pole, and greatly improves the replacement efficiency and reduces the operation and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary tools for power equipment installation, and more specifically, to a tooling device for on-site hoisting of circuit breakers in gas-insulated switchgear. Background Technology

[0002] The circuit breaker modules in GIS gas-insulated switchgear are large and heavy, and are installed at a high position inside the gas box, requiring strict precision and stability in their installation. The traditional installation method involves hoisting and securing the circuit breaker modules to the gas box at the factory before the product leaves the factory. This method has the following significant drawbacks: High transportation risks: Pre-installed circuit breakers are susceptible to road bumps and vibrations during long-distance transportation, which may cause internal components to loosen, be damaged, or have reduced sealing performance, directly affecting the performance testing and power supply acceptance after the product arrives on site.

[0003] Difficulties in on-site replacement: When a circuit breaker malfunctions or requires maintenance during on-site operation, the gas-insulated switchgear is usually installed in a space-constrained outdoor enclosure or substation, making it impossible to use large overhead cranes. If replacement is necessary, the entire gas-insulated switchgear or gas box often needs to be returned to the factory for processing, resulting in long power outages and a sharp increase in maintenance costs (including transportation, disassembly, reinstallation, and testing fees), seriously affecting the reliability and economy of power supply.

[0004] Therefore, there is an urgent need for a special tooling that can adapt to the confined space conditions on site, is easy to operate, and is safe and reliable, so as to achieve rapid and efficient on-site disassembly and assembly of circuit breaker modules. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a tooling equipment for on-site hoisting of circuit breakers for gas-insulated switchgear that is compact in structure, easy to operate, efficient in installation, and stable in quality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A tooling device for on-site hoisting of circuit breakers in gas-insulated switchgear, the circuit breaker comprising a circuit breaker housing, a sealing plate, and a fixed-seal pole; a first connecting seat is provided at the upper end of the fixed-seal pole, and a second connecting seat is provided at the lower end of the fixed-seal pole; the device includes a movable frame, a first support member, a second support member, and a hoisting assembly; the movable frame includes a counterweight frame, a cantilever frame disposed on one side of the counterweight frame, and movable wheels disposed at the bottom of the counterweight frame; a counterweight is disposed on the counterweight frame; the cantilever frame is used to support the circuit breaker housing; the cantilever frame includes an upper frame and a lower frame spaced apart, and two vertically connected components between the two. Supporting angle steel; the circuit breaker housing is located between the upper frame and the lower frame; two supporting angle steels are distributed on both sides of the circuit breaker housing; the sealing plate is connected to the supporting angle steel by a connecting piece disposed between them; one end of the first support member is connected to the supporting angle steel and cantilevered horizontally below the solid-sealing pole; one end of the second support member is connected to the second connecting seat and cantilevered horizontally above one end of the solid-sealing pole; the hoisting assembly includes a first hoisting plate and a second hoisting plate, the first hoisting plate is connected to the first connecting seat, and the second hoisting plate is connected to the upper end of the sealing plate.

[0007] Furthermore, the cantilever frame also includes a limiting member, the two ends of which are respectively connected to the two supporting angle steels and abut against the upper and / or lower ends of the circuit breaker housing.

[0008] This limiting component, together with the supporting angle steel, forms a flexible clamping or positioning frame for the circuit breaker enclosure. It can effectively limit minor swaying or displacement of the circuit breaker enclosure in the horizontal and vertical directions, especially at the moment of movement or hoisting start / stop, preventing the circuit breaker from tipping over.

[0009] Furthermore, the limiting member is connected to the supporting angle steel via a first fastener.

[0010] Furthermore, the connecting piece is connected to the supporting angle steel by a first fastener and to the sealing plate by a second fastener.

[0011] Furthermore, the first support member is connected to the support angle steel by a first fastener.

[0012] Furthermore, the first fastener includes a strip hole vertically disposed on the supporting angle steel and a fastening bolt passing through the strip hole.

[0013] The strip-shaped hole structure allows for continuous and precise vertical displacement adjustment of connected components (such as limiting parts, connecting pieces, and first support parts) to accommodate the actual height differences of each connection point of the circuit breaker, achieving precise alignment and fixation between the tooling and the circuit breaker, and providing excellent installation compatibility.

[0014] Furthermore, the connecting piece is a U-shaped steel sheet.

[0015] Furthermore, the second support member is detachably connected to the second connecting seat via an L-shaped bracket connected to one end; the bracket is provided with ribs.

[0016] Furthermore, the counterweight frame has multiple counterweight layers, and at least one counterweight is provided on at least one counterweight layer.

[0017] The multi-layer counterweight design allows for flexible calculation and allocation of the required counterweight based on the actual weight of the circuit breaker being hoisted and the cantilever length. Different numbers of counterweights can be placed on different layers, precisely adjusting the center of gravity height and total weight of the counterweights to optimally balance the overturning moment and adapt to different working conditions.

[0018] Furthermore, the counterweight includes sandbags.

[0019] The beneficial effects of this utility model are as follows: The mobile frame integrates counterweights, cantilevered load-bearing structures, and moving wheels, making the entire fixture a stable platform that can move freely, completely eliminating the reliance on fixed lifting points or large lifting equipment. It is particularly suitable for outdoor sites with limited space and complex ground conditions. The lever design of the counterweights and cantilevered frame effectively balances the overturning moment generated by the cantilevered part of the circuit breaker, ensuring the stability and safety of the entire machine during the lifting process. The cantilevered frame is responsible for supporting and fixing the circuit breaker housing. Since the internal space of the gas-insulated switchgear includes a first cabinet space for supporting the circuit breaker housing and a second cabinet space for supporting the solidified poles, the first support member is used to support the bottom of the first cabinet space during the translation process, and the second support member is used to support the bottom of the second cabinet space during the translation process, guiding the translation of the fixture and providing stable support; the first and second lifting plates are respectively connected to the upper end of the poles and the housing sealing plate. This design realizes three-dimensional, multi-point coordinated support and lifting of the core and fragile combination of the circuit breaker housing and the solidified poles. During hoisting, the force distribution is reasonable, effectively preventing damage to the pole insulator due to torsion or compression caused by single-point force or improper support, thus greatly ensuring the safety of expensive core components. This utility model's tooling equipment allows the disassembly, assembly, and transfer of circuit breakers to be completed continuously on the same tooling, reducing intermediate handling steps, significantly improving on-site replacement efficiency, and shortening power outage time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a structural diagram of the tooling equipment for on-site hoisting of circuit breakers in gas-insulated switchgear provided by this utility model.

[0022] Figure 2 This is a three-dimensional structural diagram of the tooling equipment of this utility model carrying a circuit breaker.

[0023] Figure 3 for Figure 2 The main view.

[0024] Figure 4 for Figure 3 Side view.

[0025] Figure 5 for Figure 2 A partially enlarged structural diagram.

[0026] Figure 6 This is a schematic diagram of the tooling equipment used in this utility model to hoist the circuit breaker to the gas-filled cabinet.

[0027] Figure label: 11-Counterweight frame; 111-Counterweight layer; 112-Counterweight; 12-Cantilever frame; 121-Upper frame; 122-Lower frame; 123-Supporting angle steel; 124-Connecting piece; 125-Limiting component; 126-First fastener; 1261-Strip hole; 127-Second fastener; 13-Moving wheel; 21-First support member; 22-Second support member; 221-Panel; 222-Rib plate; 31-First lifting plate; 32-Second lifting plate; 50 - Circuit breaker; 51 - Circuit breaker housing; 52 - Sealing plate; 53 - Solid-sealed pole; 531 - Second connecting seat; 532 - First connecting seat; 60 - Portable lifting equipment; 100-Gas Cabinet; 200-Outdoor Box. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] It should be noted that the directional terms such as "upper," "middle," "lower," "inner," and "outer" used below are defined based on the accompanying drawings in the instruction manual.

[0031] This embodiment provides a tooling device for on-site hoisting of circuit breakers in gas-insulated switchgear. This device is specifically designed for safely and efficiently removing or installing circuit breakers from or into the gas-insulated switchgear 100 in space-constrained environments such as substations and distribution rooms. The circuit breaker structure includes a circuit breaker housing 51, a sealing plate 52, and a solid-sealed pole 53. For example, the structure of a high-voltage vacuum circuit breaker for C-GIS gas-insulated switchgear disclosed in patent publication number CN216818200U can be used as a reference for the circuit breaker structure of this embodiment.

[0032] like Figures 1 to 6 As shown, the core of this tooling equipment is a movable, counterweighted, stable platform—the mobile frame. This mobile frame mainly consists of a counterweight frame 11, a cantilever frame 12, and casters 13. The counterweight frame 11 is typically a frame structure welded from structural steel, with multiple casters 13 equipped with brakes at its bottom, allowing the entire tooling to move and be positioned flexibly. Multiple counterweight layers 111 are distributed on the frame of the counterweight frame 11. Each counterweight layer 111 can hold counterweights 112, such as sandbags or standard counterweight blocks. This multi-layered design allows operators to flexibly adjust the number and placement of counterweights according to the actual weight and center of gravity of the circuit breaker to be hoisted, thereby precisely balancing the overturning moment generated by the cantilever frame 12 supporting the circuit breaker, ensuring the overall stability of the equipment during movement and hoisting, and preventing tipping.

[0033] The cantilever frame 12 is fixedly connected to one side of the counterweight frame 11 and is used to directly support and fix the circuit breaker housing 51. The cantilever frame 12 includes a horizontal upper frame 121 and a lower frame 122, which are arranged parallel to each other and rigidly connected by two vertically arranged support angle steels 123 to form a sturdy portal structure. The two support angle steels 123 are distributed in parallel, and the space between them is used to accommodate the circuit breaker housing 51. During operation, the circuit breaker housing 51 is placed between the upper frame 121 and the lower frame 122. In order to reliably connect the circuit breaker housing 51 to the cantilever frame 12, the circuit breaker's sealing plate 52 extends out of the cantilever frame 12, and a connecting piece 124 is provided between the support angle steels 123 and the circuit breaker's sealing plate 52. The connecting piece 124 is preferably a U-shaped steel sheet. One side of the connecting piece is height-adjustably connected to the supporting angle steel 123 via a first fastener 126 (e.g., a fastening bolt passing through the vertical slot 1261 on the supporting angle steel 123), while the other side is fixed to the pre-reserved process hole on the sealing plate 52 via a second fastener 127 (e.g., a bolt). The design of the vertical slot 1261 allows the installation height of the connecting piece 124 to be steplessly adjusted, thereby adapting to the installation position of sealing plates of different circuit breaker models.

[0034] To further limit the swaying or tilting of the circuit breaker housing 51 during transportation, hoisting, and movement, the cantilever frame 12 may also be equipped with limiting components 125. For example... Figure 5 As shown, the two ends of the limiting member 125 (e.g., a crossbar) are connected to two supporting angle steels 123 respectively via the first fastener 126 (which can also utilize the strip hole 1261). During installation, the height of the limiting member 125 is adjusted so that its end tightly abuts against the top edge and / or bottom edge of the circuit breaker housing 51, forming a flexible clamping effect on the housing together with the supporting angle steels 123, effectively preventing accidental displacement or tipping.

[0035] For the solid-sealed pole 53, a crucial component of the circuit breaker, this fixture provides a dedicated support system. One end of the first support member 21 is adjustablely connected to one of the support angle steels 123 via a first fastener 126 (using the slot 1261 on the support angle steel 123). After installation, the first support member 21 extends horizontally outward from the cantilever frame 12 (i.e., the side closer to the gas-filled switchgear), with its free end just below the bottom of the solid-sealed pole 53. Figure 6 As shown, when the tooling is moved to the gas-insulated switchgear 100 in preparation for docking, the first support member 21 can first extend into the bottom of the first cabinet space inside the gas-insulated switchgear 100 to support the circuit breaker box, playing a guiding and initial support role.

[0036] The second support member 22 supports the end of the solidified terminal post 53 (the end furthest from the enclosure). One end of the second support member 221 is connected to an L-shaped support plate 221, on which reinforcing ribs 222 are welded to increase rigidity. The second support member 22 is detachably connected to the second connecting seat 531 at the end of the solidified terminal post 53 via the L-shaped support plate 221, thereby providing stable horizontal support for the distal end of the solidified terminal post 53. During the translation and docking process, the second support member 22 can be erected at the bottom of the second cabinet space inside the gas-insulated switchgear to support the solidified terminal post. After the circuit breaker is installed, the second support member 22 is removed from the other side of the gas-insulated switchgear.

[0037] The lifting assembly provides the main lifting force. It includes a first lifting plate 31 and a second lifting plate 32. The first lifting plate 31 is fixed to the first connecting seat 532 at the upper end of the solidified pole 53 by bolts or other connecting parts. The first lifting plate 31 has an L-shaped structure. The second lifting plate 32 is fixedly connected to the upper end of the circuit breaker sealing plate 52. The upper end of the circuit breaker sealing plate 52 is provided with multiple mounting holes at intervals. The second lifting plate 32 can be connected to the appropriate mounting holes as needed. Both the first lifting plate 31 and the second lifting plate 32 are provided with lifting holes for connecting the hooks of portable lifting equipment 60 such as hand chain hoists or electric hoists. This dual-lifting-point design, together with the first support member 21 and the second support member 22 at the bottom, forms a three-dimensional, multi-point coordinated lifting and support system for the circuit breaker. The force distribution is scientific and reasonable, which can effectively avoid torsional or shear stress caused by uneven force on the solidified pole 53, and perfectly protect its internal precision insulating components such as the vacuum interrupter.

[0038] A brief description of the working principle and operation process of this embodiment: Preparation: Based on the weight of the circuit breaker to be replaced, calculate and place an appropriate amount of counterweight 112 on the counterweight frame 11. Operate the portable lifting equipment 60 to slowly lift the new circuit breaker to be installed, move it above the fixture, and lower it. Then push the moving frame so that the circuit breaker housing 51 is moved horizontally between the upper frame 121 and the lower frame 122 of the cantilever frame 12, and connect the second support member 22 to the second connecting seat 531 of the fixed terminal post 53. Simultaneously, use connecting pieces 124, limiting members 125, etc., to fasten the circuit breaker housing 51 to the cantilever frame 12; install the first lifting plate 31 and the second lifting plate 32.

[0039] Docking and Fixing: Using a mobile frame, move the fixture carrying the circuit breaker to the front of the gas-insulated switchgear, aligning its cantilever frame 12 with the installation port of the gas-insulated switchgear 100. Insert the first support member 21 and the second support member 22 into the corresponding first and second cabinet spaces of the gas-insulated switchgear, respectively. During this process, a portable lifting device 60 can be used to lift the circuit breaker, reducing the weight applied to the mobile frame, and simultaneously moving the circuit breaker until it is precisely positioned in the installation location within the gas-insulated switchgear and finally secured. The first and second cabinet spaces are part of the existing design of the gas-insulated switchgear. Both the first and second cabinet spaces include a base plate or support rod at the bottom of the corresponding space. The first support member 21 and the second support member 22 extend into the corresponding space and rest on the base plate or support rod at the bottom of the corresponding space.

[0040] Disassembly and Recycling: Disconnect all connections between the tooling and the circuit breaker, remove the tooling, and complete the replacement operation. The disassembly process of the old circuit breaker is the reverse of the installation process, and will not be described in detail here.

[0041] Through the aforementioned integrated, movable, and multi-support-point design, this utility model enables safe, quick, and high-quality disassembly and assembly of large circuit breakers in confined spaces, significantly improving operation and maintenance efficiency and reducing operational risks and overall costs.

[0042] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A tooling device for on-site hoisting of a circuit breaker in a gas-insulated switchgear, the circuit breaker comprising a circuit breaker housing, a sealing plate, and a fixed-seal pole; a first connecting seat is provided at the upper end of the fixed-seal pole, and a second connecting seat is provided at the lower end of the fixed-seal pole; characterized in that, The system includes a movable frame, a first support member, a second support member, and a hoisting assembly. The movable frame includes a counterweight frame, a cantilever frame on one side of the counterweight frame, and movable wheels at the bottom of the counterweight frame. A counterweight is mounted on the counterweight frame. The cantilever frame supports the circuit breaker housing. The cantilever frame includes an upper frame and a lower frame spaced apart, and two vertically connected angle steels. The circuit breaker housing is located between the upper and lower frames. The two angle steels are distributed on both sides of the circuit breaker housing. The sealing plate is connected to the angle steels via a connecting piece between them. One end of the first support member is connected to the angle steels and cantilevered horizontally below the fixed-end post. One end of the second support member is connected to the second connecting seat and cantilevered horizontally above one end of the fixed-end post. The hoisting assembly includes a first hoisting plate and a second hoisting plate. The first hoisting plate is connected to the first connecting seat, and the second hoisting plate is connected to the upper end of the sealing plate.

2. The tooling equipment for on-site hoisting of circuit breakers in a gas-insulated switchgear according to claim 1, characterized in that, The cantilever frame also includes a limiting member, the two ends of which are respectively connected to the two supporting angle steels and abut against the upper and / or lower ends of the circuit breaker housing.

3. The tooling equipment for on-site hoisting of circuit breakers in a gas-insulated switchgear according to claim 2, characterized in that, The limiting member is connected to the supporting angle steel via a first fastener.

4. The tooling equipment for on-site hoisting of circuit breakers in a gas-insulated switchgear according to claim 1, characterized in that, The connecting piece is connected to the supporting angle steel by a first fastener and to the sealing plate by a second fastener.

5. The tooling equipment for on-site hoisting of circuit breakers in a gas-insulated switchgear according to claim 1, characterized in that, The first support member is connected to the support angle steel by a first fastener.

6. The tooling equipment for on-site hoisting of circuit breakers in gas-insulated switchgear according to claim 3, 4, or 5, characterized in that, The first fastener includes a strip hole vertically disposed on the supporting angle steel and a fastening bolt passing through the strip hole.

7. The tooling equipment for on-site hoisting of circuit breakers in a gas-insulated switchgear according to claim 6, characterized in that, The connecting piece is a U-shaped steel sheet.

8. The tooling equipment for on-site hoisting of circuit breakers in a gas-insulated switchgear according to claim 1, characterized in that, The second support member is detachably connected to the second connecting seat via an L-shaped bracket connected to one end; the bracket is provided with ribs.

9. The tooling equipment for on-site hoisting of circuit breakers in a gas-insulated switchgear according to claim 1, characterized in that, The counterweight frame has multiple counterweight layers, and at least one counterweight is provided on at least one counterweight layer.

10. The tooling equipment for on-site hoisting of circuit breakers in a gas-insulated switchgear according to claim 1, characterized in that, The counterweights include sandbags.

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