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Planetary cycloid pin wheel balance wheel throw-in type barring device

A technology of cycloidal pinwheel and turning device, which is applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problems of tooth top and tooth top collision, and achieve the effect of solving the problem of tooth top collision

Inactive Publication Date: 2012-09-19
HARBIN TURBINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a planetary cycloid balance wheel input-type turning device to solve the problem that the current steam turbine turning device is prone to tooth tip and tooth tip grinding

Method used

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  • Planetary cycloid pin wheel balance wheel throw-in type barring device
  • Planetary cycloid pin wheel balance wheel throw-in type barring device
  • Planetary cycloid pin wheel balance wheel throw-in type barring device

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Experimental program
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specific Embodiment approach 1

[0008] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment, the turning device of this embodiment includes a hand wheel 1, a crank 2, a spring 3, a connecting rod 4, a pull rod 5, a U-shaped swing housing 6, a speed reducer 7, a first gear 8, and a first intermediate shaft 9 , the second gear 10, the third gear 12, the second intermediate shaft 13, the fourth gear 14, the frame 15 and the push rod 16, and the side wall of the U-shaped swing shell 6 near the bottom is provided with a connecting ring 6-1, A sleeve 6-2 is provided on the other side wall of the U-shaped oscillating shell 6, and the handwheel 1 is connected to one end of the crank 2 in transmission, and the other end of the crank 2 is connected to the spring 3 and the upper end of the connecting rod 4 respectively, and the spring 3 installed above the frame 15, the lower end of the connecting rod 4 is connected with the upper end of the tie rod 5, and the lower end of the tie ...

specific Embodiment approach 2

[0010] Specific implementation mode two: combination figure 1 The present embodiment will be described. The swing angle of the U-shaped swing case 6 of the present embodiment is 120°. Other implementation manners are the same as the specific implementation manner 1.

[0011] Working principle: when the turning device is working, the reducer 7 drives the fifth gear 17 to rotate through the first gear 8, the second gear 10, the third gear 12 and the fourth gear 14, and the fifth gear 17 is set outside the coupling of the steam turbine edge, thus driving the rotor to rotate, the third gear 12 can only bear the driving of the motor, and rotate around the central axis of the U-shaped swing shell 6. Regardless of whether the third gear 12 rotates or not, the U-shaped swing housing 6 can rotate around its central axis. The fourth gear 14 can not only rotate around its own center, but also can swing under the action of external force. The input or withdrawal of the barring device de...

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Abstract

The invention relates to a barring device, particularly to a planetary cycloid pin wheel balance wheel throw-in type barring device, which aims to solve the problem that the steam turbine barring device in the prior art is easy to cause touch friction between tooth tops. A hand wheel is in transmission connection with one end of a crank, the other end of the crank is in transmission connection with the upper ends of both a spring and a connecting rod, the spring is arranged above a frame, the lower end of the connecting rod is connected with the upper end of a drawbar, and the lower end of the drawbar is hinged with the connecting ring of a U-shaped wobbling shell; and a speed reducer is mounted on the frame, a first gear is mounted on the output shaft of the speed reducer, the first gear is engaged with a second gear mounted on a first middle shaft, the wobbling shell and a third gear are both mounted on the first middle shaft, the third gear is engaged with a fourth gear mounted on the second middle shaft, the third gear and the fourth gear are arranged inside the U-shaped wobbling shell, one end of an ejector pin passes through the frame and is arranged corresponding to the sleeve of the U-shaped wobbling shell. The barring device provided by the invention is used for steam turbine barring.

Description

technical field [0001] The invention relates to a barring device. Background technique [0002] There are two main types of electric barring devices: 1) electric barring devices with screw shafts (used by most domestic small and medium-sized steam turbines and 125 and 300MW units); 2) electric barring devices with swing gears (domestic units 50MW, 100MW, 200MW); with screw shaft electric turning device and working principle. The screw shaft electric turning device consists of motor, coupling, pinion gear, large gear, meshing gear, screw shaft, turning gear, safety pin, handle, etc. composition. The inner surface of the meshing gear is milled with helical teeth meshing with the helical shaft, and the meshing gear can slide left and right along the helical shaft. When it is necessary to put into the barring, first pull out the safety pin, the push handle, and the hand crank motor coupling until the meshing gears are fully meshed with the barring gears. When the handle is pu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/36
Inventor 张秋鸿石玉文王亚秋叶长军谢勇唐福顺刘志德蒙俊斌梁彦明巨春影
Owner HARBIN TURBINE
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