CN2172161Y

CN2172161Y - Vibrating sifter vibration exciter

Info

Publication number: CN2172161Y
Application number: CN 93239430
Authority: CN
Inventors: 张明洪; 张本奎; 赵国珍; 张万福
Original assignee: XINAN PETROLEUM COLLEGE
Current assignee: XINAN PETROLEUM COLLEGE
Priority date: 1993-10-22
Filing date: 1993-10-22
Publication date: 1994-07-20
Anticipated expiration: 2003-10-22

Abstract

The utility model relates to a vibrating sifter vibration exciter, comprising a vibrating and exciting motor and a planetary gear mechanism engaging with a single planetary wheel with eccentric quantity, and the planetary gear mechanism is composed of a crank shaft arranged on a motor shaft, the planetary wheel with an eccentric block arranged on the crank shaft, a fixed annular gear engaging with the planetary wheel. The vibrating sifter vibration exciter can cause the vibrating sifter realize vibration mode of a circle, a straight line, an ellipse, etc. for satisfying the requirements of different screening and conveying work. The vibrating sifter vibration exciter has the advantages of simple structure, convenient manufacture, low cost, low energy consumption, and low failure rate; the vibrating sifter vibration exciter can be used for other device which needs the exciting and vibrating force.

Description

The vibratory sieve vibrator

The utility model relates to a kind of motor vibrator of vibratory sieve vibrator, particularly single shaft inertia shaker.

Present domestic and international employed single shaft inertia shaker vibrator, normally setting-up eccentricity mass on the axle of motor when eccentric massblock rotates with motor, promptly produces a centrifugal intertia force (exciting force), thereby makes the vibratory sieve motion; When the centre of force of centrifugal intertia force overlapped with the whole barycenter of vibratory sieve screen box, vibratory sieve integral body was made translational motion, and all the movement locus with barycenter is identical for the movement locus of each point on the screen box, and the movement locus of barycenter depends on the Changing Pattern of exciting force fully.Because the size of the centrifugal inertial force that existing single shaft inertia shaker vibrator is produced is constant all the time in rotary course, so the movement locus of each point can only be " garden " on the screen box.This " garden " type vibratory sieve does not often satisfy the needs of a lot of screenings and transportation work. adopted the vibrator of the two eccentric mass structures of twin shaft in therefore producing again, so that vibratory sieve except that " garden " vibration shape, also has the vibration shapes such as " straight line ", " ellipse garden ".But the complex structure of this twin shaft inertia vibration generator, cost, energy consumption, fault rate, maintenance expense etc. are all very high.

The purpose of this utility model is to provide a kind of single shaft inertia vibration generator simple in structure, that can realize the vibration shapes such as " garden ", " straight line ", " ellipse garden ".

For achieving the above object, the utility model is by the following technical solutions: be replaced by the internal-gearing planet gear mechanism of the single file star-wheel that has eccentric mass with being arranged on eccentric massblock on the motor shaft in the existing single shaft inertia shaker shock electric machine, single file star-wheel in this mechanism is meshed with a fixed ring gear, the single file star-wheel is installed in an end of a bent axle, the other end of bent axle and motor shaft key connecting are equipped with the adjustable eccentric block of eccentric throw on the planetary gear.When motor rotates, planetary gear rotates around the machine shaft center with bent axle on the one hand, on the other hand also around the bent axle rotation, the barycenter of the eccentric block on it in motion process apart from the variation of the distance at machine shaft center with regard to generating period, the hodograph of its exciting force vector also changes thereupon, thereby makes vibratory sieve do the vibration of patterns such as corresponding garden, straight line, ellipse garden.Regulate the eccentric throw of eccentric block on the planetary gear, just can regulate the size of exciting force, thereby also can change the exciting amplitude.

Advantage of the present utility model is: (1), motor directly drive the eccentric mass exciting, single shaft, and no belt transmission, simple in structure, easily manufactured, cost, energy consumption, fault rate are low.(2), on same the vibratory sieve that vibrator is housed, only need carry out that simple planetary gear is eccentric to be adjusted, can realize garden, straight line, the vibration shapes such as ellipse garden to adapt to the needs of various different operating modes, reach the purpose of the many vibration shapes of a sieve.(3), this vibrator has the series of advantages of inside engaged gear transmission, promptly centre-to-centre spacing is little, compact conformation; Relative sliding velocity is little between flank profil, light abrasion; Lubrication circumstances is good, and friction loss is little, the transmission efficiency height; Flank of tooth contact rate and registration are big, and contact stress is little between the flank of tooth, stable drive; Internal gear tooth root thickness is big, bending strength height, long service life.

The utility model not only can be used for vibratory sieve, and needing in other machinery equipment of this type exciting force can be used for.

Fig. 1 is a structure chart of the present utility model;

Fig. 2 is that the A of Fig. 1 is to view.

Below in conjunction with description of drawings most preferred embodiment of the present utility model:

In rotating shaft with the shock electric machine of the anti-ability of shaking (1), link by the end of key (5) with bent axle (7), for preventing bent axle (7) moving axially in motion process, limit its axial displacement with fixed cover (4) and jump ring (16); The other end of bent axle (7) is equipped with self-aligning bearing (8), bearing (8) is gone up planetary gear (17) is installed, planetary gear (17) is meshed with fixed ring gear (2), and two eccentric blocks (12) are housed on the planetary gear (17), and they link by the eccentric adjusting bolt; Ring gear (2) links by the body of attachment bolt (6) with motor (1), forms an airtight operating room.The heat and the gas that produce during vibrator work are discharged through porous plug (11).For the rotor chamber that the lubricating oil that prevents oilgear enters motor (1), lubricating oil adopts transformer oil, and with sealing ring (3) two chambeies is separated.

When the rotating shaft of motor (1) is rotated, drive bent axle (7) rotation, when the planetary gear (17) that is meshed with fixed ring gear (2) rotates around motor (1) rotating shaft center with bent axle (7), also around bent axle (7) rotation, the barycenter of the eccentric block (12) on the planetary gear (17) in motion process apart from the distance at motor (1) rotating shaft center with regard to the generating period variation, thereby guarantee that the eccentric block barycenter realizes corresponding movement locus.Through kinematics and dynamic analysis and evidence, the movement locus of this eccentric block barycenter can have " garden ", " straight line " patterns such as " ellipse gardens ", thereby the carrier inertial force of planetary gear (being the exciting force of this vibrator) also changes by above-mentioned pattern, thereby make vibratory sieve do pattern motions such as " garden ", " straight line ", " ellipse garden ", satisfied the needs of screening and transportation work.

Fig. 2 be the A of Fig. 1 to view, by finding out among Fig. 2, the screw (18) of regulating eccentric throw is arranged on the planetary gear (17), the eccentric throw of eccentric block (12) can be regulated by the fixed position that changes eccentric block, thereby adjusts the size of exciting force; If open the screw (18) that twice groove (B) replaces former adjusting eccentric throw, can realize the purpose of step-less adjustment exciting force size along screw (18) center line.

Claims

1, a kind of vibratory sieve vibrator, comprise the eccentric rotating mass on motor (1) and the motor shaft, it is characterized in that, eccentric rotating mass on the motor shaft is the single file star-wheel internal-gearing planet gear mechanism of a band eccentric mass, this mechanism is made up of planetary gear (17), ring gear (2), the bent axle (7) of band eccentric block (12), planetary gear (17) is meshed with fixed ring gear (2), planetary gear (17) is installed in an end of bent axle (7), and the other end of bent axle (7) links by the rotating shaft of key (5) with motor (1).

2. vibratory sieve vibrator according to claim 1 is characterized in that, planetary gear (17) is installed on the bent axle (7) by self-aligning bearing (8).

3, vibratory sieve vibrator according to claim 1 and 2 is characterized in that, the eccentric throw of the eccentric block (12) on the planetary gear (17) is adjustable.