CN2118189U

CN2118189U - Tooth type barring apparatus

Info

Publication number: CN2118189U
Application number: CN 92210670
Authority: CN
Inventors: 王兴亚; 刘光铸; 李英任
Original assignee: SHENYANG BLOWER PLANT
Current assignee: SHENYANG BLOWER PLANT
Priority date: 1992-04-15
Filing date: 1992-04-15
Publication date: 1992-10-07

Abstract

The utility model relates to a tooth type barring apparatus used for rotors of large-scale draught fan and other machines. The apparatus comprises an electric motor driven reducer and a clutch assembled on the reducer, wherein, a clutch guide bushing external tooth is meshes with a sliding bush internal tooth, a sliding block type shifting fork is made use of driving the sliding bush sliding along the guide bushing sleeve direction. It is with simple structure, small volume, large transferring torque, flexible operating, labor saving and high safety and reliability.

Description

Tooth type barring apparatus

The utility model relates to a kind of tooth-like barring gear that is used for large fan and other mechanical large rotor.

At present, large fan and other mechanical large rotor all adopt the barring gear dribbling before blower fan is shut down back or start, so that prevent accident, improve the working life of rotor and repair apparatus better.Existing barring gear structure is complexity comparatively, and by feather key slip transmitting torque, transmitting torque is little, does not reach rating value on speed reducer output shaft for its clutch, in case the keyway distortion, the advance and retreat clutch is just very difficult, influences the usability of barring gear.The structure that adopts spline slip transmitting torque is also arranged, but spline requires the machining accuracy height, manufacture difficulty is big, cost height, unsuitable extensive use.

The purpose of this utility model provides a kind of improved barring gear, and it is simple in structure, and volume is little, and transmitting torque is big, and flexible operation is laborsaving, and is safe and reliable.

The purpose of this utility model is achieved in that this device comprises electric motor driven retarder and assembles clutch on it.Wherein the guide sleeve external tooth of clutch is meshed with the sliding sleeve internal tooth, and utilizes slide block type shift fork drive sliding sleeve to endwisely slip along guide sleeve.

Because the utility model adopts the guide pin bushing of tooth engagement and sliding sleeve to constitute clutch, so simple in structure, volume is little, profile of tooth is processed easily, and slide block type shift fork structure clutch operation is more flexible, laborsaving, and transmitting torque is big, effectively overcome the defective that exists in the prior art, increase the safety reliability of jiggering.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is a kind of concrete structure schematic representation of the utility model.

Fig. 2 is the sectional view of Fig. 1 along the A-A line.

Fig. 3 is a kind of concrete structure schematic representation of guide sleeve.

Fig. 4 is the sectional view of Fig. 3 along the B-B line.

Fig. 5 is a kind of concrete structure schematic representation of sliding sleeve.

Fig. 6 is the sectional view of Fig. 5 along the C-C line.

Fig. 7 is a kind of concrete structure partial schematic diagram of slide block type shift fork.

Fig. 8 is the sectional view of Fig. 7 along the D-D line.

Describe concrete structure of the present utility model in detail according to Fig. 1-8.This device comprises bearing 6, be assembled in protective housing 7 on the bearing 6 and electric motor driven retarder 1, guide sleeve 2, sliding sleeve 3, slide block type shift fork etc.Guide sleeve 2 external tooths that wherein are assembled in the clutch on the retarder 1 are meshed with sliding sleeve 3 internal tooths.Guide sleeve 2 directly is packed on the output shaft of retarder 1.Sliding sleeve 3 excircles are assembled with Thrust ring 4.The slide block type shift fork comprises the shift fork 9 that has handle 8, the slide block 10 that can slide up and down in the shift fork elongated hole and shift fork 9 one ends are hinged on bearing pin 11 on the bearing 6.Thrust ring 4 links together with slide block 10, and the handle 8 on the actuating shift fork 9 drives sliding sleeve 3 by Thrust ring 4 and endwisely slips along guide sleeve 2, the purpose that guide sleeve 2 is connected with fan rotor 5 or separates the clutch of realization barring gear.The guide sleeve external tooth and the sliding sleeve internal tooth of clutch can adopt common profile of tooth, can produce with general tooth process equipment, and machining accuracy height not only, and without special device, easy to manufacture.Adopt tooth-like barring gear obviously to improve transmitting torque, existing barring gear transmitting torque 500kg-m, but and the utility model transmitting torque 2250kg-m, and rapid operation, flexibly, safe and reliable.

Claims

1, a kind of tooth-like barring gear comprises electric motor driven retarder and assembles clutch on it, it is characterized in that the guide sleeve external tooth of clutch is meshed with the sliding sleeve internal tooth, and utilizes the slide block type shift fork to drive sliding sleeve to endwisely slip along guide sleeve.

2, tooth-like barring gear according to claim 1 is characterized in that the slide block in the slide block type shift fork can slide up and down in the shift fork elongated hole.