CN2293369Y

CN2293369Y - Swing-around planet driving automatic lifting raker efficient thickener

Info

Publication number: CN2293369Y
Application number: CN 96231795
Authority: CN
Inventors: 魏毓衷
Original assignee: HAIFENG ELECTRIC MACHINERY CO Ltd JIANGSU PROV
Current assignee: HAIFENG ELECTRIC MACHINERY CO Ltd JIANGSU PROV
Priority date: 1996-05-03
Filing date: 1996-05-03
Publication date: 1998-10-07
Anticipated expiration: 2006-05-03

Abstract

The utility model discloses a big torque automatic rake lifting high-efficient thickener which used for condensing ash water in an ash disposal system of a power station. The big torque automatic rake lifting high-efficient thickener preserves the performance of the original thickener. Besides, the utility model is characterized in that a planet surrounding rotary driving device, a force moment measuring device of a moment arm and an automatic rake lifting device of an electric push rod are adopted. Therefore, the driving force moment of the driving device is enabled to be bigger. The big torque automatic rake lifting high-efficient thickener can run more stably and reliably. When the resistance of an ash rake is beyond the rated value, the ash rake can be lifted automatically to alleviate load. The big torque automatic rake lifting high-efficient thickener can run continuously. Once the resistance is too big to be overcome, the big torque automatic rake lifting high-efficient thickener can automatically stop to ensure the normal running of the big torque automatic rake lifting high-efficient thickener. The utility model can not be damaged.

Description

The star that detours drives the automatic rake-lifting high-efficiency concentrator

The utility model relates to a kind of subsidiary engine that the heat power station ash disposal system is used, specifically a kind of buck high-efficiency concentrator.

The buck thickener of China's heat power station ash disposal system is with the transmission of ordinary gear reductor at present, and heavy, no automatic rake-lifting and defencive function when ash is harrowed working resistance greater than rated value, are easily turned round bad reductor, damage motor, influence the safe operation of power plant.

The purpose of this utility model provides a kind of thickener, makes its driving moment bigger, and running is steadily reliable, can automatic rake-lifting when meeting too big resistance, alleviate load, and continue efficiently running, protect reductor and motor not to be damaged.

For achieving the above object, the utility model has adopted the planet gyration drive unit, and planetary plate is fixed on the upper bracket, is wound with roller chain as sprocket around the dish, the Cycloidal Wheel of reductor and sprocket engagement follow astrolabe and do the garden motion, and the revoliving arm carriage relies on spring pressing the rotation of moment arm drive shaft; Grey rake resistance is measured by the mechanical force moment arm, when ash rake resistance overrate, and moment arm compression spring, safe chi presses off first order limit switch, sends the signal of telecommunication and carries rake to carrying rake executing agency, alleviates ash rake resistance; When further increasing to drive unit and can't overcome as special circumstances ash rake resistance, moment arm further presses off second level limit switch, cuts off main circuit, stops the thickener operation.Automatic rake-lifting adopts electric pushrod as the executing agency of carrying rake, and after electric pushrod accepted to carry the rake signal, by lever, the pulling main shaft upwards slided along outer sliding sleeve with the ash rake.Between main shaft and shaft coupling for spline is connected, so that flexible up and down and transmit big moment.Ash rake promotes the back and is divided by automatically controlled control and progressively reset for three times, changes operate as normal over to after successively clearing up the mortar of piling up the staving bottom from top to bottom.

The utility model has been owing to adopted the cycloidal reducer star type of drive that detours, thus produce bigger driving torque, turn round more steady reliably; Owing to set up moment arm and electric pushrod automatic rake-lifting device, pile up the more moment of resistance of mortar at the bottom of the thickener bucket when big even run into, can automatic rake-lifting, alleviate load and remain in operation, and by automatically controlled control ash rake automatically decline change operate as normal over to; Just in case run into mortar too much, resistance is too big and transmission mechanism can't overcome the time, moment arm further presses off second level limit switch, cuts off main circuit, stops the thickener running, thereby has guaranteed that equipment such as decelerator, motor are not damaged.

Below in conjunction with accompanying drawing is that the utility model is described in further detail for embodiment.

Fig. 1 is the star driving automatic rake-lifting high-efficiency concentrator front view that detours.This device is contained in the staving, and staving does not draw.Among the figure: 1, be ash rake, 2, be main shaft, 3, be undersetting, 4, be upper bracket, 5, be outer sliding sleeve, 6, be inner sliding sleeve, 7, be suspension bracket, 8, be bearing, 9, be lever, 10, be electric pushrod, 11, be moment arm, 12, be spring assembly, 13, be the secondary limit switch, 14, be reductor, 15 is motor, 16, be around the sprocket rotary disk, 17, be safe chi.18, be the revolution carriage.

Claims

1, a kind of concentrated high-efficiency concentrator of heat power station ash disposal system buck that is used for mainly is made up of staving, drive unit, grey rake, main shaft, rake lifting device and control device etc., it is characterized in that:

The planetary plate of A, the star drive unit that detours is fixed on the upper bracket, is wound with roller chain as sprocket around the dish, and the Cycloidal Wheel engagement sprocket of reductor follows astrolabe and does the garden motion, and the revoliving arm carriage is being pressed the rotation of moment arm drive shaft by spring;

B, grey rake resistance are measured by the mechanical force moment arm, when ash rake resistance overrate, and moment arm compression spring, safe chi presses off first order limit switch, sends the signal of telecommunication and carries rake to carrying rake executing agency, alleviates ash rake resistance; When further increasing to drive unit and can't overcome as ash rake resistance, moment arm further presses off second level limit switch, cuts off main circuit, stops the thickener operation.

2, according to described star driving, the automatic rake-lifting high-efficiency concentrator of detouring of claim 1, it is characterized in that automatic rake-lifting adopts electric pushrod as the executing agency of carrying rake, after electric pushrod accepted to carry the rake signal, by lever, the pulling main shaft upwards slided along outer sliding sleeve with the ash rake.

3, drive the automatic rake-lifting high-efficiency concentrator according to the described star that detours of claim 1, it is characterized in that between main shaft and shaft coupling, so that flexible and transmit than moment greatly for spline is connected.

4, drive the automatic rake-lifting high-efficiency concentrator according to the described star that detours of claim 1, it is characterized in that the ash rake promotes the back and divided by automatically controlled control and reset for three times, change operate as normal over to after successively clearing up the mortar of piling up the staving bottom from top to bottom.