CN2242912Y

CN2242912Y - Chain-rake type cleaning machine

Info

Publication number: CN2242912Y
Application number: CN95206797U
Authority: CN
Inventors: 刘雁麟
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-03-25
Filing date: 1995-03-25
Publication date: 1996-12-18
Anticipated expiration: 2005-03-25

Abstract

The utility model relates to a chain-rake type cleaning machine which is suitable for water-diversion channel ports of hydraulic power stations. The utility model is composed of a power mechanism, a trash grid and a chain-rake cleaning mechanism. The utility model is characterized in that the upper end and the lower end of the trash grid are respectively provided with a drive shaft and a small shaft. The drive shaft is fixedly provided with a chain wheel. The chain wheel is meshed with a loop chain. The lower part of the loop chain passes round the small shaft. The loop chain is provided with a tooth rake. Dynamic force drives the tooth rake rotating around the trash grid back and forth through the drive shaft, the chain wheel and the loop chain. Therefore, trashes are removed. The utility model has the advantages of simple structure, low cost and good effect, and is particularly suitable for middle and small size hydraulic power stations.

Description

The chain-and-harrow type trash rake

The utility model relates to a kind of import and tail water mouth and other watercourse port that is located at diversion road junction, power station and pumped storage power plant, in order to blocking the dead-wood that current are carried secretly, and branch, weeds and other solid sundries, and it is gone out the water conservancy project machinery of the water surface clearly.

The dirt-blocking dirt-cleaning machinery that uses has at present: (1) swinging trashrack, form by fixed frame, rotation grid sheet, transmission system and guide wheel device etc.Its shortcoming is, whole grid body is made up of one section one section rotating grid sheet, is with tooth on the grid sheet, and motor need be with whole grid body driven rotary, and mechanism is huge, and power consumption is high, adopts board-like roller chain also more easily to get rusty in addition, influences transmission efficiency, and fragile; (2) tooth harrow formula descaling machine is made up of tooth harrow machine, descaling machine and sewage disposal facility etc.Its shortcoming is only to be applicable to removing contamination of shallow formula or the vertical trashrack of putting of deep type water inlet, and mechanism's complexity, and cost is higher.Also have grab type in addition, various descaling machines such as slusher formula, its common deficiency is: (1) complex structure, the manufacture craft difficulty is big, maintenance difficult, and cost is higher; (2) being not suitable for medium waterpower generator station uses; (3) effect of removing contamination is not ideal enough.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art and a kind of simple in structure, easy to maintenance, chain-and-harrow type trash rake that the efficient of removing contamination is high is provided.

The purpose of this utility model is achieved in that it is made up of actuating unit, trashrack and the chain harrow mechanism that removes contamination, and its design feature is to be separately installed with power transmission shaft and little axle in the top and bottom of trashrack.At least be installed with two sprocket wheels on the power transmission shaft; The loop chain of closure state is equipped with in engagement on the sprocket wheel, and little axle is walked around in the loop chain bottom.Tooth harrow is installed on the loop chain, and power drives tooth harrow around trashrack two sides reciprocating rotating through power transmission shaft, sprocket wheel, loop chain, thereby the foreign material on the trashrack face are gone out clearly.

The utility model can also following manner be realized: tooth harrow is made up of raking arm, rake teeth and fin.Every rake teeth of a trashrack grid fixed distance, the upper and lower of rake teeth is each fin of laterally contacting also on the raking arm.

There is an open slot upper end of drain grating side bar, and slidable fit has slide block in the groove, is fixed with the adjusting bolt on the slide block.Open slot is suitable for reading by the baffle plate closure that is threaded the hole, regulates screwed hole that bolt passes baffle plate and extends and fixed by hold-doun nut.Drive shaft cartridge fits in the slide block, rotates and regulates bolt, can make slide block drive power transmission shaft, sprocket wheel lifting, thus tensioning or loose loop chain.

The utlity model has following advantage: (1) is simple in structure, and cost is lower, and easy to maintenance.Being specially adapted to medium waterpower generator station uses; (2) remove contamination effective.The bottom of tooth harrow can be inserted in the grizzly bar lattice of trashrack, the weeds etc. of plug in the grizzly bar lattice are scraped as double-edged fine-toothed comb, and the top of tooth harrow then can be pulled bigger foreign material out, along with the reciprocating rotating of loop chain, tooth harrow is removed the foreign material on the grid face again and again, makes current unobstructed.

Do detailed explanation below in conjunction with accompanying drawing:

Fig. 1 the utility model structural representation;

The A of Fig. 2 Fig. 1 is to lateral plan;

Fig. 3 sprocket wheel--side bar partial view;

Fig. 4 tooth harrow structure chart;

Fig. 5 Fig. 4 is along the B--B sectional view.

The utility model is made up of actuating unit, trashrack and the chain harrow mechanism that removes contamination.

Actuating unit: available motor, diesel engine or artificial handwheel rotate power are provided, the power transmission that adopts motor 1, reductor 2, shaft coupling 3 to form usually.Motor drives reductor by V belt, is joined by shaft coupling and power transmission shaft 4 after slowing down.General power transmission shaft controllable rotation speed built in the linear velocity that makes loop chain be 5--8 rice/minute rotating speed on.

Trashrack: form by lower and upper cross-member 15, left and right sides side bar 16, grid body 17, feet 18 and sprocket wheel adjusting device.The assembling of power transmission shaft 4 on side bar divides fixed and adjustable two kinds.Fixed side bar upper end has axis hole, and the power transmission shaft two ends directly are assemblied in the axis hole and get final product.There is an open slot adjustable side bar upper end, is equipped with the sprocket wheel adjusting device in the groove.It is made up of slide block 6, adjusting bolt 5, baffle plate 7 and hold-doun nut 8.Slide block 6 slidable fit are fixedly connected with on the slide block and regulate bolt 5 in open slot, and open slot is suitable for reading by baffle plate 7 closures that are threaded the hole.Regulate that screwed hole that bolt passes baffle plate extends and fixing by hold-doun nut 8.Power transmission shaft 4 is assemblied in the slide block 6.The upper end of regulating bolt is four rib sides, available wrench rotation, thus drive slide block, power transmission shaft and sprocket wheel lifting by regulating bolt, thus tensioning or loose loop chain.

The chain harrow mechanism that removes contamination: constitute by power transmission shaft 4, sprocket wheel 9, loop chain 10, little axle 11 and tooth harrow.Power transmission shaft 4 is assemblied on the side bar of trashrack upper end, is installed with at least two sprocket wheels on the power transmission shaft, can adorn 3--4 during as grid face broad so that more sprocket wheel.Sprocket wheel 9 is the groove gear, adopts five side's sprocket wheels (teeth of five troughs of belt) loop chain 10 by the chain ring that the long-chain enemy who connects with one another closely connects into sealing usually, has several sprocket wheels that several such loop chain circles are just arranged.With sprocket wheel 9 engagement (chain link is stuck in the middle of the teeth groove), be enclosed within down on the little axle 11 on the loop chain 10, under the drive of sprocket wheel around trashrack two sides reciprocating rotating.On loop chain 10, be installed with tooth harrow, can pacify 1--3 tooth harrow according to grid face height.Tooth harrow is made up of raking arm 12, rake teeth 13 and fin 14.Raking arm can adopt steel pipe with weight reduction.Rake teeth can arrange by interval of grid strip, and minister bottom is short on it, and it is to strengthen rake teeth intensity and prevent that the bar shaped foreign material from missing from slot that a fin, last fin effect are respectively arranged in the middle of the top and the bottom.Following fin effect also can be controlled the degree of depth that rake teeth inserts grid except that strengthening rake teeth intensity.Fin, rake teeth can be by steel plate bar or reinforcement fabrications.

The course of work: starter motor, power is through reductor, shaft coupling is delivered to power transmission shaft, power transmission shaft drives sprocket rotation, sprocket wheel drives loop chain around trashrack two sides reciprocating rotating, foreign material before blocking the weeds in the grizzly bar lattice and swimming in grid are taken the water surface out of by the bottom and the top of tooth harrow respectively, turn over after tooth harrow is walked around sprocket wheel on the platform of dam, again by artificial or mechanical chipping.Disable motor after a period of time cleans out is finished the process of once removing contamination like this.

Claims

1, a kind of chain-and-harrow type trash rake is made up of actuating unit, trashrack and the chain harrow mechanism that removes contamination, and it is characterized in that: be separately installed with power transmission shaft (4) and little axle (11) in the top and bottom of trashrack; Two sprocket wheels (9) at least fixedly are housed on the power transmission shaft, and the loop chain (10) of closed round attitude is equipped with in engagement on the sprocket wheel, and little axle is walked around in the loop chain bottom; Tooth harrow is installed on the loop chain, and power drives tooth harrow around trashrack two sides reciprocating rotating through power transmission shaft, sprocket wheel, loop chain.

2, chain-and-harrow type trash rake according to claim 1 is characterized in that: tooth harrow is made up of raking arm (12), rake teeth (13) and fin (14); Every rake teeth of a trashrack grid fixed distance, the rake teeth upper and lower is each fin of laterally contacting also on the raking arm.

3, chain-and-harrow type trash rake according to claim 1 is characterized in that: there is an open slot upper end of trashrack side bar (16), and slidable fit has slide block (6) in the groove, is fixed with on the slide block to regulate bolt (5); Open slot is suitable for reading by the baffle plate closure that is threaded the hole, regulates that screwed hole that bolt passes baffle plate extends and fixing by hold-doun nut (8); Power transmission shaft (4) is assemblied in the slide block, rotates and regulates bolt, can make slide block drive power transmission shaft, sprocket wheel lifting, tensioning or loose loop chain.