Multi-supporting-leg circular track hoisting platform

Abstract

The utility model provides a multi-supporting-leg circular track hoisting platform. The multi-supporting-leg circular track hoisting platform comprises a plurality of supporting legs, a circular track and a hoisting assembly. The circular track comprises a first connecting surface and a second connecting surface; the supporting legs are connected with the circular track through the first connecting surfaces; the distance between any two adjacent supporting legs is the same; and the hoisting assembly is in sliding connection with the circular track through the second connecting surface. By arranging a plurality of supporting legs, the circular track can be conveniently fixed, after the circular track is fixed, the hoisting assemblies can be remotely controlled to move to the designated position along the circular track, hoisting hooks of the hoisting assemblies are used for being aligned with stator winding bars for hoisting, winding installation of a circular stator is better fitted, and the precision in the using process is higher; the stator winding can be simultaneously hoisted by a plurality of hoisting assemblies, so that the problem of low installation efficiency of the stator winding of a large hydropower station and a pumped storage power station is solved.

Description

Technical Field

[0001] The present application relates to the technical field of lifting tools, and specifically provides a multi-support leg ring rail lifting platform. Background Art

[0002] Stator assembly is a crucial step in the construction of large hydropower stations and pumped-storage power plants. Stators are typically assembled in an installation room or stator shed within a foundation pit. However, the limited space within these sheds hinders the handling and installation of the windings. Furthermore, the weight of a single winding, approximately 49.2 kg, makes handling difficult and creates the risk of bumps and collisions, potentially damaging the equipment or compromising installation quality.

[0003] Currently, traditional winding installation methods primarily include the use of single-column rotary cranes, manual pulley cranes, and manual reverse transport. These methods are not only time-consuming and labor-intensive, but also have limited applicability, low installation accuracy, and require significant manpower and material resources. Furthermore, the complex operations increase the difficulty of subsequent operations and increase safety risks, resulting in inefficient stator winding installation in large hydropower stations and pumped-storage power plants. Utility Model Content

[0004] The present application provides a multi-support leg ring rail hoisting platform to solve the problem of low stator winding installation efficiency in large hydropower stations and pumped storage power stations.

[0005] The present application provides a multi-support leg ring rail lifting platform, comprising: a plurality of support legs, a ring rail, and a lifting assembly; the ring rail comprises a first connecting surface and a second connecting surface; the support legs are connected to the ring rail via the first connecting surface; the spacing between any two adjacent support legs is the same; the lifting assembly is slidably connected to the ring rail via the second connecting surface.

[0006] Optionally, the support leg includes a support base, the support base is a rectangular sheet structure, and the support base is connected to the stator frame via screws.

[0007] Optionally, the support leg also includes a support frame, and the support frame includes a first bracket and a second bracket, the first bracket is an L-shaped structure, one end of the first bracket is fixedly connected to the support base, and the other end of the first bracket is connected to the ring rail; the two ends of the second bracket are connected to the first bracket.

[0008] Optionally, a connecting component is further included, and the first bracket is connected to the ring rail through the connecting component.

[0009] Optionally, the connecting component is a symmetrically arranged L-shaped structure, one end of the connecting component abuts against a side of the first connecting surface close to the second connecting surface, and the other end of the connecting component is connected to the first bracket by a screw.

[0010] Optionally, a fixing plate is further included, wherein the fixing plate is perpendicular to the support base, the fixing plate is fixedly connected to the support base, and the fixing plate is welded to the first bracket.

[0011] Optionally, the lifting assembly includes a sliding part and a lifting part, and the lifting part includes a motor, a transmission mechanism and a sprocket; one end of the sliding part is slidingly connected to the second connecting surface, and the other end of the sliding part is connected to the motor, and the output end of the motor is connected to the sprocket through the transmission mechanism.

[0012] Optionally, the cross-sections of the ring rail, the first bracket and the second bracket are I-shaped.

[0013] Optionally, the support base and the first bracket are integrally formed.

[0014] It can be seen from the above technical solution that the present application provides a multi-support leg ring rail hoisting platform, including: a number of support legs, a ring rail, and a hoisting assembly; the ring rail includes a first connecting surface and a second connecting surface; the support legs are connected to the ring rail through the first connecting surface; the spacing between any two adjacent support legs is the same; the hoisting assembly is slidably connected to the ring rail through the second connecting surface. By setting a number of support legs, it will be convenient to fix the ring rail. After the ring rail is fixed, the hoisting assembly can be remotely controlled to move to a specified position along the ring rail, and the hook of the hoisting assembly can be used to align the stator winding rod for hoisting, which is more suitable for the winding installation of the circular stator, and the use process is more accurate. At the same time, the ring rail is provided with multiple hoisting assemblies, which can meet the needs of multiple sets of hoisting assemblies to hoist the stator winding at the same time, so as to solve the problem of low stator winding installation efficiency in large hydropower stations and pumped storage power stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 A schematic diagram of the structure of a multi-support leg ring rail hoisting platform provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of the connection assembly structure provided in an embodiment of the present application;

[0018] Figure 3A schematic diagram of the structure of the lifting assembly provided in an embodiment of the present application.

[0019] Reference numerals:

[0020] Among them, 1-support leg; 2-ring rail; 3-hoisting assembly; 4-connecting assembly; 5-fixed plate; 11-support base; 12-support frame; 121-first bracket; 122-second bracket; 21-first connecting surface; 22-second connecting surface; 31-sliding part; 32-hoisting part; 321-motor; 322-transmission mechanism; 323-sprocket. DETAILED DESCRIPTION

[0021] The following embodiments are described in detail, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numbers in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following embodiments are not intended to represent all possible implementations consistent with the present application. They are merely examples of systems and methods consistent with certain aspects of the present application, as detailed in the claims.

[0022] Stator assembly is a crucial step in the construction of large hydropower stations and pumped-storage power plants. Stators are typically assembled in an installation room or stator shed within a foundation pit. However, the limited space within these sheds hinders the handling and installation of the windings. Furthermore, the weight of a single winding, approximately 49.2 kg, makes handling difficult and creates the risk of bumps and collisions, potentially damaging the equipment or compromising installation quality.

[0023] Currently, traditional winding installation methods primarily include the use of single-column rotary cranes, manual pulley cranes, and manual reverse transport. These methods are not only time-consuming and labor-intensive, but also have limited applicability, low installation accuracy, and require significant manpower and material resources. Furthermore, the complex operations increase the difficulty of subsequent operations and increase safety risks, resulting in inefficient stator winding installation in large hydropower stations and pumped-storage power plants.

[0024] To solve the problem of low stator winding installation efficiency in large hydropower stations and pumped storage power stations. Figure 1, an embodiment of the present application provides a multi-support leg ring rail hoisting platform, comprising: a plurality of support legs 1, a ring rail 2, and a hoisting assembly 3; the ring rail 2 comprises a first connecting surface 21 and a second connecting surface 22; the support leg 1 is connected to the ring rail 2 via the first connecting surface 21; the spacing between any two adjacent support legs 1 is the same; the hoisting assembly 3 is slidably connected to the ring rail 2 via the second connecting surface 22. Among them, the support leg 1 is the base structure of the multi-support leg ring rail hoisting platform, and the support leg 1 is made of a solid material, such as high-strength steel, to ensure the stability and load-bearing capacity of the multi-support leg ring rail hoisting platform. The number of support legs 1 is set according to actual needs, and the spacing between any two adjacent support legs 1 is the same, so that the support legs 1 can be evenly distributed, ensuring that the ring rail 2 can be evenly stressed when carrying the winding, avoiding local overload. For example, 6 groups of support legs 1 can be installed on a stator with a diameter of about 4m, so that the hoisting assembly 3 can stably support the guide rail when hoisting the winding.

[0025] The ring rail 2 provides a sliding path for the multi-leg ring rail hoisting assembly 3. The ring rail 2 includes a first connecting surface 21 and a second connecting surface 22. The first connecting surface 21 connects to the support leg 1, ensuring that the ring rail 2 is securely fixed to the support leg 1. The second connecting surface 22 is used for sliding connection with the hoisting assembly 3, allowing the hoisting assembly 3 to move smoothly on the ring rail 2 and achieve precise hoisting of the winding at different positions.

[0026] The hoisting assembly 3 is the part that directly performs the hoisting task. The hoisting assembly 3 is slidably connected to the second connection surface 22, and the hoisting assembly 3 can be controlled to move to a specified position along the ring rail 2 according to demand.

[0027] In actual use, the support leg 1 is first securely mounted on the stator frame, and the ring rail 2 is then connected to the support leg 1 via the first connection surface 21. The hoisting assembly 3 is then mounted on the second connection surface 22. Based on the winding's position and installation requirements, the hoisting assembly 3 is controlled to move along the ring rail 2 to the appropriate position. Finally, the winding is lifted and moved to the designated location for installation using the lifting device on the hoisting assembly 3. Throughout this process, the operator can precisely position and smoothly move the winding by controlling the sliding movement of the hoisting assembly 3 on the ring rail 2.

[0028] At the same time, since the ring rail 2 is a circular ring structure and the stator is a circular ring, the ring rail 2 is set above the stator. The hoisting assembly 3 is always above the stator during the movement along the ring rail 2, which is convenient for transferring and installing the winding through the hoisting assembly 3. The hoisting hook of the hoisting assembly 3 is used to align the stator winding rod for hoisting, which is more suitable for the winding installation of the circular stator, and the use process is more accurate. At the same time, the ring rail 2 is provided with multiple hoisting assemblies 3, which can meet the needs of multiple groups of hoisting assemblies 3 to hoist the stator winding at the same time. For example, by setting two hoisting assemblies 3, the two hoisting assemblies 3 can be constructed at the same time to hoist the winding. The winding can also be hoisted from any hoisting assembly 3. During the movement of the hoisting assembly 3, the winding can be installed on another hoisting assembly 3 to save labor and working time, thereby solving the problem of low stator winding installation efficiency in large hydropower stations and pumped storage power stations.

[0029] In some embodiments, the support leg 1 includes a support base 11 having a rectangular sheet structure and connected to the stator frame via screws. When the support leg 1 is connected to the ring rail 2, the support leg 1 is subjected to significant pressure. Therefore, to prevent bending and deformation at the connection between the support leg 1 and the stator frame, a support base 11 having a rectangular sheet structure is provided at the connection between the support leg 1 and the stator frame. This increases the contact area between the support base 11 and the stator frame, thereby improving the connection strength between the support leg 1 and the stator frame.

[0030] In some embodiments, the support leg 1 further includes a support frame 12, which includes a first bracket 121 and a second bracket 122. The first bracket 121 is an L-shaped structure, with one end of the first bracket 121 fixedly connected to the support base 11, and the other end of the first bracket 121 connected to the ring rail 2; the second bracket 122 is connected to the first bracket 121 at both ends. The provision of the first bracket 121 and the second bracket 122 can enhance the stability and load-bearing capacity of the multi-support leg ring rail hoisting platform. The first bracket 121 and the second bracket 122 provide additional support and fixation, ensuring that the support leg 1 can remain stable and not deform when the ring rail 2 is under heavy load.

[0031] Specifically, the first bracket 121 adopts an L-shaped structure, and one end of the first bracket 121 is fixedly connected to the support base 11. The connection between the first bracket 121 and the support base 11 is rigid to ensure the firmness of the first bracket 121. The other end is connected to the ring rail 2, and the first bracket 121 provides support for the ring rail 2. Both ends of the second bracket 122 are connected to the first bracket 121, forming a fixed structure similar to a triangle. The second bracket 122 can improve the stability of the first bracket 121, especially when the hoisting assembly 3 on the ring rail 2 hoists a large number of windings, the ring rail 2 will generate a large lateral force, and under the action of the lateral force, it affects the first bracket 121. The second bracket 122 can support the first bracket 121, which can effectively prevent the ring rail 2 from tilting or displacing, and ensure the smooth progress of the hoisting operation.

[0032] In some embodiments, the multi-support leg ring rail hoisting platform further includes a connecting component 4, such as Figure 2 As shown, the first bracket 121 is connected to the ring rail 2 via the connecting component 4. The connection component 4 is provided to facilitate connection of the first bracket 121 to the ring rail 2. Specifically, the connecting component 4 is a symmetrically arranged L-shaped structure, with one end of the connecting component 4 abutting against the side of the first connecting surface 21 close to the second connecting surface 22, and the other end of the connecting component 4 being connected to the first bracket 121 via screws. During installation, the first bracket 121 can be connected to the ring rail 2 by abutting one end of the connecting component 4 against the side of the first connecting surface 21 close to the second connecting surface 22, and then connecting the other end of the connecting component 4 to the first bracket 121 via screws.

[0033] In some embodiments, the multi-support leg ring rail hoisting platform further includes a fixing plate 5, which is perpendicular to the support base 11, fixedly connected to the support base 11, and welded to the first bracket 121. The fixing plate 5 mainly supports the first bracket 121.

[0034] In some embodiments, as Figure 3 As shown, the hoisting assembly 3 includes a sliding portion 31 and a hoisting portion 32. The hoisting portion 32 includes a motor 321, a transmission mechanism 322, and a sprocket 323. One end of the sliding portion 31 is slidably connected to the second connecting surface 22, and the other end of the sliding portion 31 is connected to the motor 321. The output end of the motor 321 is connected to the sprocket 323 via the transmission mechanism 322. The sliding portion 31 can slide along the second connecting surface 22 of the ring rail 2, allowing the hoisting assembly 3 to move according to the position of the winding. The sliding connection between the sliding portion 31 and the second connecting surface 22 ensures the stability and flexibility of the hoisting assembly 3 during movement, while also reducing friction and wear, thereby extending the service life of the equipment.

[0035] The motor 321 of the hoisting unit 32 provides the driving force for the hoisting operation. The transmission mechanism 322 is a key component connecting the motor 321 and the sprocket 323, converting the high-speed rotation of the motor 321 into a torque and speed more suitable for the hoisting operation. Common transmission mechanisms 322 include gear boxes, belt drives, or chain drive systems, which can adjust the transmission ratio as needed to optimize the hoisting performance. The sprocket 323 is connected to the transmission mechanism 322 and is connected to the winding hoisting belt or hook through a chain or other transmission medium, directly participating in the lifting process of the winding. The design of the sprocket 323 takes into account the load distribution and strength requirements to ensure that it will not break or excessively wear during the hoisting process.

[0036] To hoist the winding, the hoisting assembly 3 is moved above the winding via the sliding portion 31. The motor 321 is then activated, which drives the sprocket 323 via the transmission mechanism 322. As the sprocket 323 rotates, the hook connected to it rises, lifting the winding. Simultaneously, thanks to the sliding connection between the sliding portion 31 and the ring rail 2, the operator can control the hoisting assembly 3 to move along the ring rail 2, precisely moving the winding to the desired position for installation or removal.

[0037] In some embodiments, the cross-section of the ring rail 2, the first bracket 121, and the second bracket 122 is I-shaped. The I-shaped configuration of the first bracket 121, the second bracket 122, and the ring rail 2 allows them to maintain a low weight while providing high bending strength and torsional rigidity. The I-shaped structure effectively disperses loads and reduces concentrated stress on the material, thereby improving the load-bearing capacity and service life of the overall structure. Furthermore, the I-shaped cross-section of the ring rail 2 provides a moving track for the sliding portion 31, reducing the risk of derailment during movement of the sliding portion 31.

[0038] In some embodiments, the support base 11 and the first bracket 121 are integrally formed. This integral formation eliminates the drawbacks of welded or bolted connections, such as weld fatigue and bolt loosening, thereby improving the strength and durability of the support leg 1. This is particularly important in scenarios where the support leg 1 can withstand heavy loads and repeated stresses. Furthermore, this integrated molding simplifies the assembly process, shortening production cycles and reducing production costs.

[0039] It can be seen from the above technical solution that the embodiment of the present application provides a multi-support leg ring rail hoisting platform, including: a plurality of support legs 1, a ring rail 2, and a hoisting assembly 3; the ring rail 2 includes a first connecting surface 21 and a second connecting surface 22; the support legs 1 are connected to the ring rail 2 via the first connecting surface 21; the spacing between any two adjacent support legs 1 is the same; the hoisting assembly 3 is slidably connected to the ring rail 2 via the second connecting surface 22. By providing a plurality of support legs 1, it will be convenient to fix the ring rail 2. After the ring rail 2 is fixed, the hoisting assembly 3 can be remotely controlled to move to a specified position along the ring rail 2, and the hook of the hoisting assembly 3 can be used to align the stator winding rod for hoisting, which is more suitable for the winding installation of the circular stator and has higher precision during use. At the same time, the ring rail 2 is provided with multiple hoisting assemblies 3, which can meet the needs of multiple groups of hoisting assemblies 3 for hoisting the stator winding at the same time, so as to solve the problem of low stator winding installation efficiency in large hydropower stations and pumped storage power stations.

[0040] Similar parts between the embodiments provided in this application can be referenced to each other. The specific implementation methods provided above are only a few examples under the overall concept of this application and do not constitute a limitation on the scope of protection of this application. For those skilled in the art, any other implementation methods expanded based on the scheme of this application without expending creative work shall fall within the scope of protection of this application.

Claims

1. A multi-support leg ring rail hoisting platform, characterized in that: include: A plurality of support legs (1), a ring rail (2), and a lifting assembly (3); The ring rail (2) comprises a first connecting surface (21) and a second connecting surface (22); the support legs (1) are connected to the ring rail (2) via the first connecting surface (21); the spacing between any two adjacent support legs (1) is the same; and the hoisting assembly (3) is slidably connected to the ring rail (2) via the second connecting surface (22).

2. The multi-support leg ring rail hoisting platform according to claim 1, characterized in that: The support leg (1) comprises a support base (11), the support base (11) is a rectangular sheet structure, and the support base (11) is connected to the stator frame via screws.

3. The multi-support leg ring rail hoisting platform according to claim 2, characterized in that: The support leg (1) further comprises a support frame (12), wherein the support frame (12) comprises a first bracket (121) and a second bracket (122), wherein the first bracket (121) is an L-shaped structure, wherein one end of the first bracket (121) is fixedly connected to the support base (11), and the other end of the first bracket (121) is connected to the ring rail (2); and both ends of the second bracket (122) are connected to the first bracket (121).

4. The multi-support leg ring rail hoisting platform according to claim 3, characterized in that: It also includes a connecting assembly (4), and the first bracket (121) is connected to the ring rail (2) via the connecting assembly (4).

5. The multi-support leg ring rail hoisting platform according to claim 4, characterized in that: The connecting component (4) is a symmetrically arranged L-shaped structure, one end of the connecting component (4) abuts against a side of the first connecting surface (21) close to the second connecting surface (22), and the other end of the connecting component (4) is connected to the first bracket (121) via a screw.

6. The multi-support leg ring rail hoisting platform according to claim 3, characterized in that: It also includes a fixing plate (5), the fixing plate (5) being perpendicular to the supporting base (11), the fixing plate (5) being fixedly connected to the supporting base (11), and the fixing plate (5) being welded to the first bracket (121).

7. The multi-support leg ring rail hoisting platform according to claim 1, characterized in that: The hoisting assembly (3) comprises a sliding portion (31) and a hoisting portion (32); the hoisting portion (32) comprises a motor (321), a transmission mechanism (322) and a sprocket (323); one end of the sliding portion (31) is slidably connected to the second connecting surface (22), the other end of the sliding portion (31) is connected to the motor (321), and the output end of the motor (321) is connected to the sprocket (323) via the transmission mechanism (322).

8. The multi-support leg ring rail hoisting platform according to claim 3, characterized in that: The cross-sections of the ring rail (2), the first bracket (121) and the second bracket (122) are I-shaped.

9. The multi-support leg ring rail hoisting platform according to claim 3, characterized in that: The support base (11) and the first bracket (121) are integrally formed.

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