CN215201775U

CN215201775U - Special tool for decomposing crank arm small shaft of hydroelectric generating set

Info

Publication number: CN215201775U
Application number: CN202120897728.4U
Authority: CN
Inventors: 刘春生; 刘珊; 姜成利; 高世冬; 徐向东; 罗希军; 张建军; 张洪刚
Original assignee: Maintenance Co Of Lvyuan Hydropower Company Northeast Branch Of State Grid
Current assignee: Maintenance Co Of Lvyuan Hydropower Company Northeast Branch Of State Grid
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-12-17
Anticipated expiration: 2031-04-28

Abstract

The utility model relates to a hydroelectric power generation equipment maintenance field decomposes specialized tool of hydroelectric generating set connecting lever staff promptly. The method is mainly applied to the disassembly of the crank arm small shaft of the hydroelectric generating set. It includes a supporting beam, and a supporting beam bottom mounting has the base of placing the jack, corresponds to the stores pylon roof beam that has the outburst on the supporting beam of base upper end, and stores pylon roof beam front end has the opening that is greater than the turning arm staff diameter. Simple structure, light weight, convenience, rapidness and convenient operation. In combination with an electro-hydraulic jack, the disassembly speed will be faster. One person can operate, the working efficiency is improved, the labor intensity of workers is reduced, the working efficiency is improved, and the effect is obvious.

Description

Special tool for decomposing crank arm small shaft of hydroelectric generating set

Technical Field

The utility model relates to a hydroelectric power generation equipment maintenance field decomposes specialized tool of hydroelectric generating set connecting lever staff promptly. The method is mainly applied to the disassembly of the crank arm small shaft of the hydroelectric generating set.

Background

In the prior art, the vertical shaft suspension type hydroelectric generating set is used for a power plant, a water turbine is of a mixed flow type, the number of crank arm small shafts is 24, the crank arm small shafts are used for connecting crank arms and control ring connecting rods, a jack needs to be erected below the small shafts when a unit A is repaired, the small shafts are ejected out, the connecting rods above the jack all generate deflection deformation in different degrees when the jack applies force every time, in addition, due to the fact that the space below the jack is narrow, wood padding is needed when the jack is erected, operation is quite inconvenient, in addition, the matching of some small shafts is tight, the jack needs to be knocked by a sledge hammer above the jack, and the jack is often damaged due to vibration. The traditional process has low efficiency, manpower waste, complex process, high labor intensity, high danger and longer decomposition time. A set of special tool for decomposing the crank arm small shaft is required to be developed on site so as to improve the working efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the aforesaid not enough and provide a specialized tool of decomposition hydro-power generating unit connecting lever staff that rational in infrastructure, excellent in use effect.

The technical solution of the utility model is that: the special tool for decomposing the crank arm small shaft of the hydroelectric generating set is characterized by comprising a supporting beam, wherein a base for placing a jack is fixed at the bottom end of the supporting beam, a hanging rack beam which extends out is arranged on the supporting beam corresponding to the upper end of the base, and the front end of the hanging rack beam is provided with a notch larger than the diameter of the crank arm small shaft.

The rear end of the bottom of the supporting beam is transversely fixed with an anti-falling rod.

The utility model has the advantages that: 1. simple structure, light weight, convenience, rapidness and convenient operation. In combination with an electro-hydraulic jack, the disassembly speed will be faster. 2. One person can operate, the working efficiency is improved, the labor intensity of workers is reduced, the working efficiency is improved, and the effect is obvious.

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic left view of fig. 1.

Fig. 3 is a schematic top view of a pylon beam.

Fig. 4 is a schematic view of the usage state of the present invention.

Detailed Description

Referring to fig. 1, 2, 3 and 4, the names of the components are as follows: the support beam comprises a support beam 1, a base 2, a hanger beam 3, a notch 4, an anti-falling rod 5, a crank arm small shaft 6, a connecting rod 7 and a jack 8.

Referring to fig. 1, 2 and 3, the special tool for decomposing the small crank arm shaft of the hydroelectric generating set comprises a supporting beam 1, wherein a base 2 for placing a jack is fixed at the bottom end of the supporting beam 1, a hanging frame beam 3 which extends out is arranged on the supporting beam 1 corresponding to the upper end of the base 2, and the front end of the hanging frame beam 3 is provided with a notch 4 which is larger than the diameter of the small crank arm shaft. The anti-falling rod 5 is transversely fixed at the rear end of the bottom of the support beam 1, so that the use and the storage are safe.

Referring to fig. 4, the tool is mainly used for detaching the crank arm small shaft of the hydroelectric generating set, the hanger beam 3 is clamped on the connecting rod 7 outside the shaft diameter of the crank arm small shaft 6 by utilizing the principle of object acting force and reaction force, and the jack 8 is jacked in the tool and below the crank arm small shaft 6, so that the deflection deformation of the connecting rod 7 caused by the traditional process is prevented, and the crank arm small shaft 6 is convenient to eject. Through the stress calculation, the hanger beam 3 and the support beam 1 can meet the stress requirement by adopting steel plates with the thickness of 15 millimeters. The electric hydraulic jack 8 is combined, the dismounting speed is faster, the unit decomposition period is saved, the structure is simple through field practice, one person can operate, the working efficiency is improved, the labor intensity of workers is reduced, the remarkable effect is obtained, the electric hydraulic jack is suitable for most mechanical equipment and hydroelectric generating sets, and the electric hydraulic jack has wide application prospect and popularization value.

The above description is only exemplary of the present invention, and the various illustrations do not limit the essence of the present invention.

Claims

1. The special tool for decomposing the small crank arm shaft of the hydroelectric generating set is characterized by comprising a supporting beam (1), wherein a base (2) for placing a jack is fixed at the bottom end of the supporting beam (1), a support beam (3) extending out is arranged on the supporting beam (1) corresponding to the upper end of the base (2), and the front end of the support beam (3) is provided with a notch (4) larger than the diameter of the small crank arm shaft; an anti-falling rod (5) is transversely fixed at the rear end of the bottom of the support beam (1).