Novel tool special for hoisting upper end shaft of hydroelectric generator

Abstract

A novel tool special for hoisting an upper end shaft of a hydroelectric generator comprises a hoisting tool, the hoisting tool comprises a base plate, supporting plates are symmetrically arranged at the top of the base plate, first reinforcing plates connected with the base plate are symmetrically arranged at the two ends of the supporting plates, hoisting holes are formed in the supporting plates, a plurality of connecting screw holes are formed in the base plate, and a positioning table is arranged at the bottom of the base plate. And a positioning tool matched with the hoisting tool is arranged on the hoisting tool. By the adoption of the structure, the lifting tool is firm and stable in overall structure and convenient and rapid to assemble and join, the lifting operation and the disassembly and assembly join procedures are greatly facilitated, and the working efficiency is improved; the hoisting tool is accurate in alignment matching and firm in mounting, fixing and connecting, and is matched with a traction rope for positioning, so that the situation that the shaking amplitude of the motor rotor shaft is too large in the hoisting process is avoided, and hoisting is more stable and smoother; the device is simple in overall structure, convenient and flexible to operate and use and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary equipment of a hydropower station, in particular to a novel special tool for hoisting the upper shaft of a hydroelectric generator. Background Art

[0002] The upper shaft of a hydroelectric generator mainly refers to the upper or top area of ​​the generator rotor shaft. The generator rotor shaft is a key component that connects the rotor assembly and supports it in the bearing. It carries the weight of the rotor. Therefore, the greater the generator power, the greater the overall size and weight of the motor rotor shaft. During the overhaul and maintenance process, the loading and unloading of the generator upper shaft has always been cumbersome. One reason is that the overall weight of the motor rotor shaft in a large hydroelectric generator is extremely large, and the lifting operation is difficult. Another reason is the lack of corresponding lifting tooling. The lifting process is cumbersome and difficult to quickly and stably connect and fix, which is very time-consuming and reduces work efficiency. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a new type of special tooling for lifting the upper shaft of a hydraulic generator. The overall structure of the lifting tooling is firm and stable, and the installation and connection are convenient and fast, which greatly facilitates the lifting operation and the disassembly and assembly connection processes, and improves work efficiency; the lifting tooling is accurately aligned and matched, the installation and fixed connection are reliable, and the positioning is coordinated with the traction rope to avoid excessive shaking of the motor rotor shaft during the lifting process, and the lifting is more stable and smooth; the overall structure of the device is simple, the operation and use are convenient and flexible, and the practicability is strong.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a new type of special tooling for lifting the upper shaft of a hydroelectric generator, including a lifting tooling, the lifting tooling includes a seat plate, a support plate is symmetrically provided on the top of the seat plate, a first reinforcement plate connected to the seat plate is symmetrically provided at both ends of the support plate, a lifting hole is provided on the support plate, a plurality of connecting screw holes is provided on the seat plate, a positioning platform is provided at the bottom of the seat plate, and a positioning tooling cooperating with the lifting tooling is provided on the lifting tooling.

[0005] In a preferred solution, a second reinforcement plate connected to the seat plate is provided at the symmetrical midline position of the support plate.

[0006] In a preferred solution, the support plate, the first reinforcement plate, the second reinforcement plate and the seat plate are connected by welding, and all weld positions are subjected to flaw detection after welding.

[0007] In a preferred solution, the hanging hole is located on the symmetric midline of the support plate.

[0008] In a preferred solution, a rubber ring is provided on the positioning platform.

[0009] In a preferred solution, the positioning tool comprises positioning sleeves that are symmetrically arranged and cooperate with each other, and fixing plates are symmetrically arranged on the positioning sleeves, and fastening bolts that cooperate with them are arranged on the fixing plates.

[0010] In a preferred solution, an anti-slip pad is provided on the inner surface of the positioning sleeve.

[0011] In a preferred solution, the length of the positioning sleeve matches the distance between the symmetrically arranged support plates.

[0012] The utility model provides a novel special tool for lifting the upper shaft of a hydraulic generator, which has the following beneficial effects by adopting the above structure:

[0013] (1) The overall structure of the lifting tooling is firm and stable, and the connection is convenient and fast, which greatly facilitates the lifting operation and the disassembly and connection process, and improves work efficiency;

[0014] (2) The lifting tooling is precisely aligned and connected, and the installation and fixing are secure. The traction rope is used for positioning to avoid excessive shaking of the motor rotor shaft during the lifting process, making the lifting more stable and smooth.

[0015] (3) The overall structure of the device is simple, the operation is convenient and flexible, and it is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the structure of the lifting tooling of the utility model.

[0019] Figure 3 It is a schematic diagram of the structure of the lifting tooling of the utility model.

[0020] Figure 4 This is a schematic diagram of the positioning tooling structure of the utility model.

[0021] In the figure: lifting tool 1, positioning tool 2, seat plate 3, connecting screw hole 4, support plate 5, first reinforcement plate 6, second reinforcement plate 7, lifting hole 8, positioning platform 9, rubber ring 10, positioning sleeve plate 11, fixing plate 12, anti-skid pad 13, fastening bolt 14. DETAILED DESCRIPTION

[0022] like Figure 1-4A novel special tool for lifting the upper shaft of a hydroelectric generator includes a lifting tool 1, wherein the lifting tool 1 includes a seat plate 3, a support plate 5 is symmetrically arranged on the top of the seat plate 3, and a first reinforcement plate 6 connected to the seat plate 3 is symmetrically arranged at both ends of the support plate 5, a lifting hole 8 is arranged on the support plate 5, a plurality of connecting screw holes 4 are arranged on the seat plate 3, a positioning platform 9 is arranged at the bottom of the seat plate 3, and a positioning tool 2 cooperating with the lifting tool 1 is provided.

[0023] In a preferred solution, a second reinforcing plate 7 connected to the seat plate 3 is provided at the symmetrical midline position of the support plate 5 to improve the overall structural strength.

[0024] In a preferred solution, the support plate 5, the first reinforcement plate 6, the second reinforcement plate 7 and the seat plate 3 are connected by welding, and all weld positions are subjected to flaw detection after welding to ensure welding strength and overall structural strength.

[0025] In a preferred solution, the lifting hole 8 is located on the symmetrical midline of the support plate 5 to balance the forces and avoid the upper shaft from tilting during the lifting process.

[0026] In the preferred solution, a rubber ring 10 is provided on the positioning platform 9. The alignment is accurate, and the seat plate 3 is conveniently moved when the bolts are connected to fix the seat plate 3 and the top of the upper shaft, so as to facilitate the connection and installation.

[0027] In a preferred solution, the positioning tool 2 comprises a symmetrically arranged and mutually matched positioning sleeve 11, a fixing plate 12 is symmetrically arranged on the positioning sleeve 11, and a fastening bolt 14 is arranged on the fixing plate 12 to match it. The relative movement between the traction rope and the lifting hole 8 is reduced during the lifting process, thereby improving the stability of the overall lifting and transportation.

[0028] In a preferred embodiment, an anti-skid pad 13 is provided on the inner surface of the positioning sleeve 11 to increase the friction force and reduce the displacement amplitude of the traction rope.

[0029] In a preferred solution, the length of the positioning sleeve 11 matches the distance between the symmetrically arranged support plates 5. The limited position matching ensures a secure installation and stable support.

[0030] The method of using the utility model is as follows: the seat plate 3 is installed in alignment with the top of the upper shaft of the motor, and is connected and fixed by using a connecting bolt structure in conjunction with the connecting screw hole 4 and the fixing hole on the upper shaft, and then the lifting traction rope is connected through the two lifting holes 8, and finally the positioning sleeve 11 is clamped on the traction rope between the two groups of support plates 5, and fixed up and down, so that the relative movement between the traction rope and the lifting hole 8 is reduced during the lifting process, thereby improving the stability of the overall lifting and transportation.

[0031] The beneficial effects of the utility model: the overall structure of the lifting tooling is firm and stable, the installation and connection are convenient and fast, which greatly facilitates the lifting operation and the disassembly and assembly connection processes, and improves work efficiency; the lifting tooling is accurately aligned and coordinated, the installation and fixed connection are reliable, and the positioning is coordinated with the traction rope to avoid excessive shaking of the motor rotor shaft during lifting, and the lifting is more stable and smooth; the overall structure of the device is simple, the operation and use are convenient and flexible, and it is highly practical.

Claims

1. A novel special tool for lifting the upper shaft of a hydroelectric generator, comprising a lifting tool (1), characterized in that: The lifting tool (1) comprises a seat plate (3), a support plate (5) is symmetrically provided on the top of the seat plate (3), a first reinforcement plate (6) connected to the seat plate (3) is symmetrically provided at both ends of the support plate (5), a lifting hole (8) is provided on the support plate (5), a plurality of connecting screw holes (4) are provided on the seat plate (3), a positioning platform (9) is provided at the bottom of the seat plate (3), and a positioning tool (2) cooperating therewith is provided on the lifting tool (1).

2. A new type of special tooling for lifting the upper shaft of a hydroelectric generator according to claim 1, characterized in that: A second reinforcement plate (7) connected to the seat plate (3) is provided at the symmetrical midline position of the support plate (5).

3. A new type of special tooling for lifting the upper shaft of a hydroelectric generator according to claim 1, characterized in that: The support plate (5), the first reinforcement plate (6), the second reinforcement plate (7) and the seat plate (3) are connected by welding, and all weld positions are subjected to flaw detection after welding.

4. A new type of special tooling for lifting the upper shaft of a hydroelectric generator according to claim 1, characterized in that: The hanging hole (8) is located on the symmetry center line of the support plate (5).

5. According to claim 1, a new type of special tooling for lifting the upper shaft of a hydroelectric generator is characterized by: A rubber ring (10) is provided on the positioning platform (9).

6. The new type of special tooling for lifting the upper shaft of a hydroelectric generator according to claim 1 is characterized by: The positioning tool (2) comprises positioning sleeves (11) that are symmetrically arranged and cooperate with each other, the positioning sleeves (11) are symmetrically provided with fixing plates (12), and the fixing plates (12) are provided with fastening bolts (14) that cooperate with them.

7. A new type of special tooling for lifting the upper shaft of a hydroelectric generator according to claim 6, characterized in that: An anti-slip pad (13) is provided on the inner surface of the positioning sleeve (11).

8. The new type of special tooling for lifting the upper shaft of a hydroelectric generator according to claim 6 is characterized by: The length of the positioning sleeve (11) matches the distance between the symmetrically arranged support plates (5).

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