CN201127905Y - Power quick return mechanism for movable-sieve jig - Google Patents

Abstract

The utility model provides a power quick return mechanism for a movable sieve jigger, which belongs to solid separating equipment technical field and aims to solve the problems of a mechanical type movable sieve jigger that the quick-return property is not evident and the separating effect is not good. A driving wheel, a first connecting bar and a first quick-return intensifying wheel form a double crank mechanism, wherein, the first quick-return intensifying wheel and a second quick-return intensifying wheel rotate coaxially, the second quick-return intensifying wheel is hinged with a second connecting bar eccentrically, the second connecting bar is hinged with a screen body. The power quick-return mechanism combines the quick-return properties of a double-crank mechanism and a crank rocker mechanism to make the quick-return property of the power quick-return mechanism more evident. The separation index of the mechanical type movable sieve jigger is close to that of a hydraulic type movable sieve jigger; moreover, the power quick-return mechanism has the characteristics of simple structure, convenient operation, low blooey rate, etc. and has evident price advantage. The mechanism can be applied to a gravity jigging gangue discharging device.

Description

A kind of power quick return mechanism that is used for movable-sieve jig

Technical field

The utility model relates to a kind of moving sieve transmission mechanism, especially for the mechanical power quick return mechanism of movable-sieve jig, belongs to the solid separation equipment technical field.

Background technology

Movable-sieve jig is that a kind of direct dependence external force driving sieve nest moves up and down in aqueous medium, causes material periodically loose, realizes the screening installation by density stratification, is the ideal equipment that is widely used in piece raw coal discharge refuse and steam coal separation.Movable-sieve jig divides two kinds of fluid pressure type and mechanical types according to type of drive, the driving force of hydraulic pressure movable-sieve jig is provided by hydraulic system, good separation effect, and the hydraulic system adjusting range is wide, easy to operate, but fluid pressure drive device cost height, frequent speed change transformation work are to the requirement harshness of Hydraulic Elements, and diagnosis when breaking down and eliminating be difficulty relatively, the maintenance cost height, also high to the technical level of operators requirement, cause the hydraulic pressure movable-sieve jig to be difficult for popularizing, be of limited application.The present mechanical type movable-sieve jig that generally uses, driving force is provided by mechanical component, and it is simple, reliable to have an attended operation, and cost is low, and advantage easy to maintenance receives praises from customers, but separating effect is not ideal enough.Trace it to its cause, existing machinery formula movable-sieve jig adopts common toggle to drive the sieve nest motion, and the characteristics of motion that this type of drive produced is undesirable, and quickreturn characteristics is not obvious, thereby causes the separating effect of lump coal good not as the fluid pressure type jigging machine.

Summary of the invention

The utility model is used to overcome the defective of prior art and a kind of power quick return mechanism that is used for movable-sieve jig that strengthens quickreturn characteristics, good separation effect that has is provided.

The alleged problem of the utility model is solved by following technical scheme:

A kind of power quick return mechanism that is used for movable-sieve jig, its special feature is: it is suddenly returned the enhancing wheel, is strengthened for second anxious time and take turns by driving wheel, first connecting rod, first, second connecting rod and sieve nest are formed, wherein driving wheel, first connecting rod, first anxious the returning strengthen the double-crank mechanism that the wheel formation has quickreturn characteristics, the first anxious enhancing wheel and the second anxious enhancing wheel coaxial rotation of returning of returning, the second anxious enhancing wheel that returns is hinged with second connecting rod off-centre, and second connecting rod and sieve nest are hinged.

The above-mentioned power quick return mechanism that is used for movable-sieve jig, the described first anxious center of rotation off-centre that strengthens wheel of returning is provided with.

Problem such as the utility model is not obvious at standard machinery formula vibro-assisted jigging mechanism of ocean quickreturn characteristics, separating effect difference and design have a compound quick return mechanism that strengthens quickreturn characteristics, this mechanism utilizes the two anxious quickreturn characteristics that strengthen wheel Composite Double crank mechanism and crank and rocker mechanism that return, make the desirable curve movement of mechanism's output, quickreturn characteristics is able to obvious reinforcement.Adopt mechanical type movable-sieve jig of the present utility model compared with prior art to have following characteristics: 1. quickreturn characteristics obviously, good separation effect, the moving sieve sieve nest of transmission terminal can obtain bigger acceleration when descending, on the basis of certain thickness of bed layer, make material fully loose in water, realize that separation index is near fluid pressure type movable-sieve jig level by density stratification; 2. simple in structure, easy to operate, the operation troubles rate is extremely low, compares and has tangible price advantage with the moving force mechanisms that sieves of the hydraulic pressure of same treatment ability.Based on above-mentioned advantage, the utility model is expected to become the regeneration product of existing machinery formula movable-sieve jig power set, can be widely used in equipment such as heavy jigging discharge refuse and the relevant device.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the right view of Fig. 1.

Number in the figure is expressed as follows: 1. driving wheel; 2. first connecting rod; 3. first anxious the returning strengthens wheel; 4. second anxious the returning strengthens wheel; 5. second connecting rod; 6. sieve nest;

The specific embodiment

Referring to Fig. 1, the utility model strengthens wheel 3, the second anxious enhancing wheel 4 that returns for 2, first anxious time by driving wheel 1, first connecting rod, and second connecting rod 5 and sieve nest 6 are formed.The motor power moment of torsion is passed to driving wheel through transmission component, driving wheel and first connecting rod off-centre are hinged, the first connecting rod and the first anxious enhancing wheel that returns are eccentric hinged, constitute double-crank mechanism by driving wheel, first connecting rod, the first anxious enhancing wheel that returns with quickreturn characteristics, the driving wheel uniform rotation, first anxious the returning strengthens the rotation of wheel speed change, forms a priority and returns.Referring to Fig. 1, Fig. 2, first anxious the returning strengthens wheel and strengthens the coaxial setting of wheel with second anxious the returning, and rotates with speed, and first suddenly returns the eccentric setting of the center of rotation that strengthens wheel.The second anxious enhancing wheel that returns is hinged with second connecting rod off-centre, second connecting rod and sieve nest are hinged, this setting makes the second anxious motion of returning the enhancing wheel obtain compound urgency after second connecting rod is delivered to sieve nest and returns effect, sieve nest is being done reciprocal jigging motion by the second connecting rod drive in the transmittance process step by step, obtain bigger acceleration during decline, thereby make movable-sieve jig receive good separating effect.

It is as follows that the utility model is used on the mechanical movable-sieve jig its course of work: when movable-sieve jig was worked, sieve nest was done upper and lower reciprocating motion anxious the returning under the humidification of power around fixed axis.After feed coal feeds, on sieve nest, form bed.Actuating unit hauls from sieve nest and moves upward, and material is held up by whole layer; Sieve nest descends fast under two anxious time effect of novel link actuating unit, and the particle of different densities is with the sedimentation in water of different speed.Through moving up and down for several times repeatedly, material is realized by density stratification, and is moved forward with the sieve nest that tilts.The light material in upper strata is discharged through different outlets respectively with the lower floor spoil, reaches the purpose of discharge refuse sorting.

Claims (2)

1. power quick return mechanism that is used for movable-sieve jig, it is characterized in that: it suddenly returns enhancing by driving wheel (1), first connecting rod (2), first anxious time enhancing wheel (3), second and takes turns (4), second connecting rod (5) and sieve nest (6) are formed, wherein driving wheel, first connecting rod, first anxious the returning strengthen wheel formation double-crank mechanism, the first anxious enhancing wheel and the second anxious enhancing wheel coaxial rotation of returning of returning, the second anxious enhancing wheel that returns is hinged with second connecting rod off-centre, and second connecting rod and sieve nest are hinged.

2. the power quick return mechanism that is used for movable-sieve jig according to claim 1 is characterized in that: the described first anxious center of rotation off-centre that strengthens wheel of returning is provided with.

Images