Stator hoisting tool

Abstract

The utility model discloses a stator hoisting tool, and belongs to the technical field of stator hoisting tools. The stator lifting tool comprises a balancing frame, lifting arms and a stabilizing assembly, the lifting arms are hinged to the two ends of the balancing frame respectively, the lifting arms are connected with hanging lifting lugs on a stator and used for lifting and overturning the stator, and the stabilizing assembly is matched with balancing lifting lugs of the stator and used for stabilizing the stator in the lifting state. According to the utility model, the balance frame is connected with the main lifting hook of the crown block in a workshop to provide lifting power for the hoisting stator, and the suspension arm is hinged on the balance frame and can be quickly connected with the hanging lug on the stator in a hoisting manner; the stator is pulled by the auxiliary lifting hook of the crown block to overturn around the hanging lifting lug, overturning of the stator is achieved, the stator overturned by 90 degrees can be connected with the balancing frame through the additionally-arranged stabilizing assemblies, and the relative stability of the stator and the hoisting tool in the hoisting process can be guaranteed through the two stabilizing assemblies.

Description

Technical Field

[0001] The utility model belongs to the technical field of stator hoisting tools, in particular to a stator hoisting tool. Background Art

[0002] The stator is one of the important components of the hydroelectric generator of a hydropower station. It is the stationary part of the motor. The stator consists of three parts: the stator core, the stator winding and the base. It has high technical content and high price. Due to the large mass of the motor stator, it is difficult to hoist.

[0003] When assembling the motor, the stator needs to be installed inside the hydro-turbine generator. The stator is cylindrical and inconvenient to move, and requires extremely high lifting technology. The horizontal hydro-turbine generator needs to flip the stator from horizontal placement to vertical lifting and then install it, but the stator of the hydro-turbine generator is heavy and difficult to lift and turn over. Utility Model Content

[0004] The purpose of the utility model is to provide a stator hoisting tool for a horizontal hydro-turbine generator to solve the problem of difficulty in turning over and hoisting the stator.

[0005] Technical solution: A stator lifting tool includes a balancing frame, a lifting arm and a stabilizing assembly. The two ends of the balancing frame are respectively hinged with lifting arms, and the lifting arms are connected to the hanging ears on the stator for lifting and flipping the stator. The stabilizing assembly cooperates with the balancing ears of the stator to stabilize the stator in the lifting state.

[0006] Furthermore, the balancing frame includes a frame body, and the frame body is provided with two lifting holes for cooperating with the main lifting hook of the overhead travelling crane.

[0007] Furthermore, the balancing frame also includes a cushion block installed on the frame body, and the cushion block is installed above the lifting hole to prevent wear of the main lifting hook of the overhead travelling crane and the frame body.

[0008] Furthermore, both ends of the suspension arm are respectively provided with a hinge structure and a hanging hole, the hinge structure is hinged to the end of the frame, and the hanging hole cooperates with the hanging ear on the stator.

[0009] Furthermore, the stator includes a stator body, the hanging lugs and the balancing lugs are both installed on the stator body, the two hanging lugs are installed on the outer side wall exceeding the diameter of the stator body, the number of the balancing lugs is two, the two balancing lugs are axially arranged on the outer side wall of the stator body, and the balancing lug cooperates with the overhead crane auxiliary hook for flipping the stator.

[0010] Furthermore, the stabilizing assembly includes a telescopic structure and connecting structures installed at both ends of the telescopic structure, and the two connecting structures are hinged to the frame and the balancing lugs respectively.

[0011] Beneficial effects: The utility model utilizes the balance frame to establish a connection relationship with the main hook of the overhead crane in the workshop to provide lifting power for the lifting stator. The boom is hinged on the balance frame and can quickly establish a lifting connection relationship with the hanging lug on the stator. When the main hook of the overhead crane lifts the balance frame together with the stator, the stator is pulled around the hanging lug by the auxiliary hook of the overhead crane to flip the stator, thereby realizing the flipping of the stator. The added stabilizing component can establish a connection relationship between the stator flipped 90° and the balance frame. The two sets of stabilizing components can ensure the relative stability of the stator and the lifting tools during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the lifting stator of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the inverted stator of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the stator in the utility model.

[0016] The accompanying drawings are marked as follows: 1. balancing frame; 11. frame body; 12. hanging hole; 13. pad; 2. hanging arm; 21. hinged structure; 22. hanging hole; 3. stabilizing component; 4. stator; 41. stator body; 42. hanging eye; 43. balancing eye. DETAILED DESCRIPTION

[0017] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0018] like Figure 1-Figure 2 As shown, a stator hoisting tool includes a balancing frame 1, a boom 2 and a stabilizing assembly 3. The two ends of the balancing frame 1 are respectively hinged with the boom 2, and the boom 2 is connected to the hanging ears 42 on the stator 4 for hoisting and turning the stator 4. The stabilizing assembly 3 cooperates with the balancing ears 43 of the stator 4 to stabilize the stator 4 in the hoisting state.

[0019] The utility model utilizes the balance frame 1 to establish a connection relationship with the main hook of the overhead crane in the workshop to provide lifting power for lifting the stator 4. The boom 2 is hinged on the balance frame 1 and can quickly establish a lifting connection relationship with the hanging lug 42 on the stator 4. When the main hook of the overhead crane lifts the balance frame 1 together with the stator 4, the stator 4 is pulled around the hanging lug 42 by the auxiliary hook of the overhead crane to flip over, thereby realizing the flipping of the stator 4. The added stabilizing component 3 can establish a connection relationship between the stator 4 flipped 90° and the balance frame 1. The two groups of stabilizing components 3 can ensure the relative stability of the stator 4 and the lifting tools during the lifting process.

[0020] like Figure 1 and Figure 3 As shown, the balancing frame 1 includes a frame body 11, and two lifting holes 12 are provided on the frame body 11 for cooperating with the main hook of the overhead travelling crane. The frame body 11 is a load-bearing frame structure welded by metal plates and rib plates, and shaft structures for articulating the boom 2 are welded at both ends.

[0021] Specifically, the balance frame 1 also includes a pad 13 installed on the frame 11, and the pad 13 is installed above the lifting hole 12 to prevent wear between the main hook of the overhead crane and the frame 11. The pad 13 can also enhance the lightness of the frame 11 and prevent the frame 11 from being deformed due to the squeezing force of the main hook of the overhead crane.

[0022] The two ends of the suspension arm 2 are respectively provided with a hinge structure 21 and a hanging hole 22, the hinge structure 21 is hinged to the shaft structure at the end of the frame body 11, and the hanging hole 22 cooperates with the hanging ear 42 on the stator 4. The hanging ear 42 is a hanging nail structure, and cooperates with the hanging hole 22 to realize the rapid connection between the lifting tool and the stator 4 without being disengaged, and has good safety in use.

[0023] like Figure 4 As shown, the stator 4 includes a stator body 41, a hanging lug 42 and a balancing lug 43 are both installed on the stator body 41, two hanging lugs 42 are installed on the outer wall of the stator body 41 with a diameter exceeding the stator body 41, and there are two balancing lugs 43, which are arranged on the outer wall of the stator body 41 along the axial direction of the stator body 41, and the balancing lug 43 cooperates with the auxiliary hook of the overhead traveling device for turning over the stator 4. In order to cooperate with the use of the lifting tool, the hanging lug 42 and the balancing lug 43 need to be additionally provided on the stator body 41 to realize the turning over of the stator body 41 and the stability of the posture after turning over.

[0024] like Figure 1 and Figure 2 As shown, the stabilizing assembly 3 includes a telescopic structure and connecting structures installed at both ends of the telescopic structure, and the two connecting structures are respectively hinged on the frame 11 and the balancing lug 43. The telescopic structure can be a threaded adjustment rod or a tensioning chain, and the connecting structure can be a latch structure, and the specific structure is not limited.

[0025] The utility model is an auxiliary lifting device designed to meet the needs of horizontally lifting the stator 4 during the assembly process of the horizontal turbine generator stator. When in use, the main lifting hook of the crane is first connected to the lifting hole 12 of the frame 11, and then the hanging hole 22 of the boom 2 is sleeved on the hanging lug 42 of the stator 4, and the auxiliary lifting hook of the crane is connected to the balancing lug 43 close to the ground (such as Figure 1 As shown), the main hook of the overhead crane lifts the stator 4 through the balance frame 1, and then the auxiliary hook of the overhead crane turns the stator 4 around the hanging lug 42 by moving the balance lug 43, until the stator slowly turns 90 degrees and the overhead crane stops outputting. Finally, the stabilizing component 3 is connected between the frame 11 and the balance lug 43 to prevent the stator from swinging in the vertical direction, so as to achieve a stable setting after the stator 4 is turned over. The utility model has a simple structure, good safety and reliability, low manufacturing cost and use cost, and is easy to install in the power station and has strong environmental adaptability.

[0026] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A stator lifting tool, characterized in that: The invention comprises a balancing frame (1), a suspension arm (2) and a stabilizing assembly (3), wherein the suspension arms (2) are respectively hinged at both ends of the balancing frame (1), the suspension arms (2) are connected to hanging ears (42) on a stator (4) and are used for hoisting and turning the stator (4), and the stabilizing assembly (3) cooperates with the balancing ears (43) of the stator (4) and is used for stabilizing the stator (4) in a hoisted state.

2. A stator lifting tool according to claim 1, characterized in that: The balancing frame (1) comprises a frame body (11), and the frame body (11) is provided with two lifting holes (12) for cooperating with a main lifting hook of a crane.

3. A stator lifting tool according to claim 2, characterized in that: The balancing frame (1) further comprises a cushion block (13) mounted on the frame body (11); the cushion block (13) is mounted above the lifting hole (12) and is used to prevent wear of the main lifting hook of the overhead travelling crane and the frame body (11).

4. A stator lifting tool according to claim 2, characterized in that: The two ends of the suspension arm (2) are respectively provided with an articulated structure (21) and a hanging hole (22); the articulated structure (21) is hinged to the end of the frame (11); and the hanging hole (22) cooperates with a hanging ear (42) on the stator (4).

5. A stator lifting tool according to claim 4, characterized in that: The stator (4) comprises a stator body (41), the hanging lugs (42) and the balancing lugs (43) are both mounted on the stator body (41), the two hanging lugs (42) are mounted on the outer wall of the stator body (41) with a diameter exceeding the stator body (41), the number of the balancing lugs (43) is two, the two balancing lugs (43) are arranged on the outer wall of the stator body (41) along the axial direction of the stator body (41), and the balancing lugs (43) cooperate with the auxiliary hook of the overhead travelling crane to flip the stator (4).

6. A stator lifting tool according to claim 5, characterized in that: The stabilizing assembly (3) comprises a telescopic structure and connecting structures installed at both ends of the telescopic structure, and the two connecting structures are respectively hinged on the frame (11) and the balancing lifting lug (43).

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