GCB circuit breaker hoisting structure in dome hoisting height limiting environment

Abstract

The utility model discloses a GCB circuit breaker hoisting structure in a dome hoisting height limiting environment, which comprises a track support frame arranged below a dome and positioned above a GCB circuit breaker; the movable hoisting mechanism is arranged on the track supporting frame in a sliding manner; and the electric lifting transfer platform is arranged between the GCB circuit breaker and the side wall of the dome. Aiming at the hoisting problem of the GCB circuit breaker, the utility model provides a proper hoisting solution method, designs a whole set of hoisting equipment, makes up the blank of a hoisting tool for overhauling the GCB circuit breaker under the limitation of the dome-shaped hoisting height, and provides a corresponding technical means. The method has the advantages of adjusting measures to local conditions and being ingenious in conception, and is verified through practice.

Description

Technical Field

[0001] The utility model relates to the technical field of GCB circuit breaker hoisting, and more specifically to a GCB circuit breaker hoisting structure under a dome hoisting height restriction environment. Background Art

[0002] GCB (generator output circuit breaker system) is located at the outlet of large hydroelectric generators, and is usually composed of A, B, C 3-phase circuit breakers, circuit breaker operating mechanisms, and control cabinets. The daily inspection and maintenance of GCB circuit breakers plays an important role in ensuring the normal operation of the entire generator set. Due to the dome-shaped building environment of the GCB room in some underground power stations, the conventional single-beam gantry hoisting method has the following problems:

[0003] 1. The dome-shaped roof limits the lifting height, and the lifting space of the single lifting beam is insufficient, so the circuit breaker cannot be lifted normally.

[0004] 2. When the circuit breaker falls, the hanging beam cannot be moved to an open place and can only reach above the control cabinet, which cannot solve the falling problem. Utility Model Content

[0005] The utility model aims to provide a GCB circuit breaker hoisting structure under a dome hoisting height restriction environment, in order to solve the technical problems in the background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A GCB circuit breaker hoisting structure under a dome hoisting height restriction environment, comprising:

[0008] A track support frame, the track support frame is arranged below the dome and above the GCB circuit breaker;

[0009] A mobile hoisting mechanism, wherein the mobile hoisting mechanism is slidably arranged on the track support frame;

[0010] An electric lifting and transferring platform is arranged between the GCB circuit breaker and the dome side wall.

[0011] In some embodiments, the mobile lifting mechanism includes a bottom frame with a built-in driving motor, a high beam perpendicular to the sliding direction of the bottom frame is provided in the middle of the bottom frame, a low beam is provided on the side of the high beam away from the electric lifting transfer platform, and the height of the high beam is higher than the low beam; fixed pulleys for lifting are respectively provided on the high beam and the low beam, and steel wire ropes are provided on the fixed pulleys; a winch for locking or loosening the steel wire ropes is provided on the bottom frame.

[0012] In some embodiments, a plurality of mitered beams are provided between the high beam and the low beam.

[0013] In some embodiments, the electric lifting and transfer platform includes a U-shaped steel frame, a screw lifting group, a drive motor, a main table, a secondary table, a universal ball, a tray, and a lifting lug;

[0014] The U-shaped steel frame serves as the main structure of the electric lifting and transfer platform, and the screw lifting group is arranged inside the U-shaped steel frame; the power of the screw lifting group is provided by the driving motor; the main table top is arranged above the screw lifting group and can move up and down with the screw lifting group; the auxiliary table top is connected to the side of the U-shaped steel frame, and universal balls are embedded in the main table top and the auxiliary table top; the pallet moves back and forth on the universal balls of the main table top and the auxiliary table top; lifting rings are installed around the pallet for ropes to pull the pallet from the auxiliary table top to the main table top.

[0015] In some embodiments, the electric lifting and transferring platform also includes directional wheels and steering wheels, and the directional wheels and steering wheels are located below the steel frame.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] This application provides a suitable lifting solution for the lifting problem of GCB circuit breakers, designs a full set of lifting equipment, fills the gap in the lifting tooling for GCB circuit breakers under the limitation of dome-type lifting height, and provides corresponding technical means. This application has the advantages of being adapted to local conditions and ingeniously conceived, and has been tested in practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the GCB circuit breaker hoisting structure under the dome hoisting height restriction environment;

[0019] Figure 2 Schematic diagram of the electric lifting transfer platform;

[0020] Figure 3 Schematic diagram of the front view of the GCB chamber;

[0021] Figure 4 Schematic diagram of the track support frame;

[0022] Figure 5 Schematic diagram of the mobile lifting mechanism;

[0023] Figure 6-Figure 15 It is a workflow diagram. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0025] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0026] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or display that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed but may include other steps or elements not explicitly listed or inherent to such process, method, product, or display.

[0029] The following will be combined Figure 1-Figure 15 , a GCB circuit breaker hoisting structure under a dome hoisting height restriction environment involved in the embodiment of the present application is described in detail. It is worth noting that the following embodiments are only used to explain the present application and do not constitute a limitation on the present application.

[0030] Embodiment 1:

[0031] See also Figure 1-5As shown, a GCB circuit breaker hoisting structure in a dome lifting height restricted environment includes: a track support frame 200, a mobile hoisting mechanism 300, and an electric lifting and transferring platform 100. The track support frame is arranged below the dome and above the GCB circuit breaker; the mobile hoisting mechanism is slidably arranged on the track support frame; and the electric lifting and transferring platform is arranged between the GCB circuit breaker and the side wall of the dome.

[0032] The mobile lifting mechanism includes a bottom frame with a built-in driving motor, a high beam 12 perpendicular to the sliding direction of the bottom frame is provided in the middle of the bottom frame, a low beam 15 is provided on the side of the high beam away from the electric lifting transfer platform, and the height of the high beam is higher than the low beam; fixed pulleys 13 for lifting are respectively provided on the high beam and the low beam, and steel wire ropes are provided on the fixed pulleys; a winch 11 for locking or loosening the steel wire ropes is provided on the bottom frame.

[0033] In order to improve the overall structural strength, a plurality of mitered beams 14 are provided between the high beam and the low beam.

[0034] In order to solve the problem of insufficient lifting space, this tooling adopts the high-low beam lifting point conversion method. The mobile lifting mechanism adopts a high-low double lifting beam design, and its structure can fit the dome to maximize the use of space. When the center plane of the high beam and the low beam moves to the top of the circuit breaker chamber on the far right, the high beam and the low beam lift the circuit breaker together and reach the limit position 1. At this time, the lower end of the circuit breaker is still lower than the height of the circuit breaker chamber without the cover and cannot be moved out; then the high beam wire rope continues to tighten, and the low beam wire rope is relaxed until the circuit breaker reaches the limit position 2. At this time, the lower end of the circuit breaker is higher than the height of the arc extinguishing chamber without the cover, and it can be moved out normally.

[0035] In order to solve the problem that the circuit breaker cannot be directly removed by falling when the hoisting mechanism moves to the leftmost end of the dome, the tooling adopts a pallet relay removal method. The electric lifting and transfer platform includes a U-shaped steel frame, a screw lifting group, a drive motor, a main table, a sub-table, a universal ball, a pallet, and a lifting lug;

[0036] A screw lifting group 2 is installed on the U-shaped steel frame 1 as the main structure of the electric lifting and transfer platform; the power of the screw lifting group is provided by the driving motor 3; the directional wheels 9 and the steering wheels 10 are located below the steel frame; the main table 4 is located above the screw lifting group 2 and can move up and down; the auxiliary table 5 is connected to the side of the U-shaped steel frame, provided with bolt connection, and can be disassembled; the main table 4 and the auxiliary table 5 are embedded with universal balls 6; the tray 7 can move back and forth on the universal balls 6 of the main table 4 and the auxiliary table 5; the tray 7 is installed with lifting rings 8 around it, which can be used for ropes to pull the tray 7 from the auxiliary table 5 to the main table 8.

[0037] When the circuit breaker is moved to the top of the control cabinet, the hoist is used to tilt the circuit breaker by using the lifting point above the dome, and it is dropped onto the pallet 7 with the help of the high beam lifting winch. The pallet 7 is provided with a lifting ring 8. The rope is tied to it to pull it from the auxiliary table 5 to the main table 4. Then the driving motor 3 of the electric lifting and transfer platform works, and the main table 4 is driven to fall through the screw lifting group 2. Then the bolt connection between the auxiliary table 5 and the U-shaped steel frame 1 is released. The electric lifting and transfer platform can carry the circuit breaker out of the work site to complete the entire lifting process.

[0038] In some embodiments, the electric lifting and transferring platform also includes directional wheels and steering wheels, and the directional wheels and steering wheels are located below the steel frame.

[0039] The following takes the lifting of the A-phase switch, which is the most difficult to lift, as an example. The remaining B-phase and C-phase can be directly lifted through the high beam, because there is enough space above the dome for operation.

[0040] [Step 1]: Use the console to move the mobile lifting mechanism horizontally to the top of phase A. For details, see Figure 6 ;

[0041] [Step 2]: Use a special lifting beam and lifting strap to tie the workpiece tightly, and fix the lifting protection belt on the surface of the workpiece;

[0042]

Step 3

[0043] [Step 4]: Adjust the tension of the 4 sets of winch wire ropes to be roughly the same, see Figure 7 ;

[0044] [Step 5]: Select "1111" as the working mode of the console and "up" as the function. The four sets of winches will start at the same time to lift the workpiece. For details, see Figure 8 ;

[0045] [Step 6]: Select "0011" for the console working mode and "Descent" for the function to control the steel wire rope of the low beam to descend;

[0046] [Step 7]: Select "1100" for the console working mode and "Up" for the function to control the wire rope of the high beam to rise; repeat steps 6 and 7 according to the workpiece situation until the lowest point of the workpiece is higher than the cover removal height. For details, see Fig. 9 ;

[0047] [Step 8]: Drive the electric lift platform into the space between the control cabinet and the wall, as close to the control cabinet as possible, and then lower the bracket.

[0048] [Step 9]: Select "Move Left" on the console to move the lifting mechanism to the far left. Fig.10 ;

[0049] [Step 10]: Hang a hand-operated hoist at the top lifting point of the arc on the left, and use the hand-operated hoist to hook the lifting lug below the lifting strap to tilt the workpiece. Fig.11 ;

[0050] [Step 11]: Drop the workpiece onto the movable support plate, remove the hand hoist, and loosen the winch rope. Fig.12 ;

[0051] [Step 12]: Pull out the pallet, make the center of gravity of the workpiece fall inside the lift, and release the winch hook. Fig.13 ;

[0052] [Step 13]: Remove the lifting mechanism and disconnect the extended platform from the main body of the lift. Fig.14 ;

[0053] [Step 14]: Lower the lifting platform to the lowest point, disconnect the extended part of the electric lifting transfer platform from the main body, and pull it out. Fig.15 .

[0054] The above description is only a preferred embodiment of the present invention and is used to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A GCB circuit breaker hoisting structure under a dome hoisting height restriction environment, characterized in that: include: A track support frame, the track support frame is arranged below the dome and above the GCB circuit breaker; A mobile hoisting mechanism, wherein the mobile hoisting mechanism is slidably arranged on the track support frame; An electric lifting and transferring platform is arranged between the GCB circuit breaker and the dome side wall.

2. The GCB circuit breaker hoisting structure under dome hoisting height restriction environment according to claim 1, characterized in that: The mobile lifting mechanism includes a bottom frame with a built-in driving motor, a high beam perpendicular to the sliding direction of the bottom frame is provided in the middle of the bottom frame, a low beam is provided on the side of the high beam away from the electric lifting transfer platform, and the height of the high beam is higher than the low beam; fixed pulleys for lifting are respectively provided on the high beam and the low beam, and steel wire ropes are provided on the fixed pulleys; a winch for locking or loosening the steel wire ropes is provided on the bottom frame.

3. The GCB circuit breaker hoisting structure under dome hoisting height restriction environment according to claim 2, characterized in that: A plurality of mitered beams are arranged between the high beam and the low beam.

4. The GCB circuit breaker hoisting structure under dome hoisting height restriction environment according to claim 2, characterized in that: The electric lifting and transfer platform includes a U-shaped steel frame, a screw lifting group, a drive motor, a main table, a secondary table, a universal ball, a tray, and a lifting lug; The U-shaped steel frame serves as the main structure of the electric lifting and transfer platform, and the screw lifting group is arranged inside the U-shaped steel frame; the power of the screw lifting group is provided by the driving motor; the main table top is arranged above the screw lifting group and can move up and down with the screw lifting group; the auxiliary table top is connected to the side of the U-shaped steel frame, and universal balls are embedded in the main table top and the auxiliary table top; the pallet moves back and forth on the universal balls of the main table top and the auxiliary table top; lifting rings are installed around the pallet for ropes to pull the pallet from the auxiliary table top to the main table top.

5. The GCB circuit breaker hoisting structure under dome hoisting height restriction environment according to claim 4, characterized in that: The electric lifting and transferring platform also includes directional wheels and steering wheels, and the directional wheels and steering wheels are located below the steel frame.

Images