A grinding device for tubular turbine blades based on three-dimensional twisted surface clamping

Abstract

The invention discloses a blade grinding device of a tubular turbine based on three-dimensional twisted curved surface clamping; the structure of the device comprises a workbench, cushion blocks, a three-dimensional curved surface anti-damage clamping device, a control panel, a rear beam, a rotating shaft, a displacement rod and a grinding head, wherein two cushion blocks are provided and respectively and adhesively connected to the left side and the right side of the lower end of the workbench; the lower end of the three-dimensional curved surface anti-damage clamping device is welded with the right end of the workbench; a curved surface deformation fitting structure and a rotating fitting structure are matched with each other by the three-dimensional curved surface anti-damage clampingdevice provided by the invention, so that the shape and the position of the curved surface of the blade clamping surface are changed according to the curved surface shape of the blade clamping surface, and the curved surface deformation fitting structure is more fitted with the blade clamping surface, so that the clamping force is satisfied and the clamping surface is not damaged; and through arranging a vibration abdication prevention structure, the left clamping seat, the right clamping seat and the sharp tooth multi-ring clamping sleeve are matched with each other; the displacement conversion rod is clamped, and the blade is prevented from loosening due to shaking during the grinding process.

Description

technical field [0001] The invention is a grinding device for blades of hydroelectric power generation, in particular to a grinding device for blades of tubular water turbines based on clamping by three-dimensional twisted curved surfaces. Background technique [0002] There are many forms of power generation, such as hydropower, thermal power, wind power, and nuclear power, etc. Hydropower stations are mainly built in the middle and upper reaches of rivers, relying on the construction of dams to make the water level drop between the upstream and downstream, and the water flow hits the rotating blades to turn the turbine For power generation, the tubular turbine is a commonly used equipment unit. The rotary blades of the tubular turbine are formed by casting. After forming, they need to be polished. During the grinding process, the blades need to be clamped. During this process, there will be One problem; since the blade is a curved body designed according to hydraulics, and...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a grinding device for tubular turbine blades based on three-dimensional twisted curved surface clamping, to solve the problem that the blade is a curved body designed according to hydraulics, and the water inlet surface and the water outlet surface The thickness of the blade is different, the clamping surface is not a plane, the traditional clamping method only fixes the blade, the clamping plate cannot fit the clamping surface well, and the hardness of the aluminum blade is not very high, so It will cause the clamping part to sag, and the blade will be partially deformed. During the use process, it will be subject to the long-term impact of the water flow, and it will be more prone to cracks and fractures.

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