CN208810536U - Self-balancing roller flip flop screen - Google Patents

Abstract

The utility model discloses the vibrating screen that a kind of pair of ground foundation dynamic load is zero, abbreviation self-balancing roller flip flop screens.It mainly include interior screen frame, outer screen frame, crankshaft, driving device and transmission device and support device.Outer screen frame and interior screen frame are by its side plate respectively, and connection sieve beam forms, and the connection sieve beam of the two is successively staggered.Crankshaft is responsible for that inside and outside screen frame is driven to do circular motion.Driving device includes motor, big small belt pulley and V-belt.Transmission device is by bearing, bearing block and transmission short axle composition.The utility model makes inside and outside screen frame do circular motion around total mass center of the two when operating, since the inertia force of the two movement is point-blank and contrary, so that overall cancel out each other to the centrifugal force of support, realize the job requirement for being zero to ground dynamic load.

Description

Self-balancing roller flip flop screen

Technical field

The invention belongs to screening machineries, are specifically to provide the flip flop screen that a kind of pair of ground dynamic load is zero.

Background technique

When carrying out the screening of material, flip flop screen is either vibrated for general vibrating screen at work to ground foundation Dynamic load is very big, to generate very big noise, the working environment quality of workshop worker is seriously reduced, for this phenomenon, mesh Preceding researcher mainly studies in terms of two, bears first is that being realized by the counteracting for carrying out inertia force and being moved to the zero of ground Lotus；Second is that improving the structure of existing vibrating screen, achieve the purpose that zero dynamic load by increasing transmission of crankshaft.

Applicants have discovered that current large-scale vibrating screen, either elemental body or double-mass vibrating, can all adopt substantially With the vibration excitor of big exciting force, this way can make integral device noise big, also big to the dynamic load on ground, be unsatisfactory for very much In people at present to the requirement of equipment.And if can be by double-mass vibrating active balance, mutually balance each other respective inertia force, So very big ground dynamic load would not integrally occur in equipment, and so as to effectively reduce noise, it is current to meet people Working condition requirement.

Summary of the invention

The object of the present invention is to provide a kind of novel screening plant, it is big to solve noise existing in the prior art, to ground The big problem of basic dynamic load.

To solve the above problems, the present invention adopts the following technical solutions realize: a kind of balance roller flip flop screen, wrap Interior screen frame, outer screen frame, crankshaft, driving device, transmission device and support are included.

Inside and outside screen frame is made of its side plate, angle steel, connection sieve beam respectively, and the sieve beam of inside and outside screen frame successively staggered row Column, the side plate of inside and outside screen frame are provided with hole, and the hole that crankshaft passes through inside and outside screen frame plays the role of connecting two screen frames, crankshaft and side plate Inside is equipped with bearing and bearing block when connection.Connection sieve beam and side plate junction are equipped with angle steel, play gravity flow screen beam action simultaneously And the intensity of side plate can be increased.

Driving device includes big belt pulley, small belt pulley, V-belt, motor.Crankshaft is after having connected inside and outside screen frame, most The end of front end crankshaft connects lobed shaft coupling, and the shaft coupling other end connects transmission device, then is connected to motor by belt.It passes Dynamic device mainly includes bearing block, and bearing is driven short axle, bearing gland and labyrinth lid.Bearing is mounted in bearing block, bearing pressure Lid is mounted on bearing block and plays the role of fixing bearing, and labyrinth lid and bearing gland are fitted together and play the work of sealing With.It is equipped with oil filler point above bearing block, guarantees the lubrication of bearing.

Support device is made of two groups of length supports, and each support base structure is identical but height is different, all by propping up Pedestal, metal isolation spring, bearing gland and bearing composition are supportted, pedestal is used to hold up screen frame, and metal spring is used to vibration isolation, and axis Pressure cap is mounted on the base, and inner part installation bearing is used to drag and drop crankshaft, and crankshaft passes through support both ends and is separately connected screen frame And transmission device.

The working principle of the invention: motor is rotated by belt driving transmission device, and transmission device passes through lobed shaft coupling again Device is connected to the end of front end crankshaft, forces crank rotation, is mounted on the inside and outside screen frame of crankshaft due to being mounted on crankshaft difference Cross section on, and two, crankshaft 180 ° different of cross-sectional moment phase phase differences, so inside and outside screen frame is around the total matter of two screen frames The heart makes rotating motion.Since centrifugal force is point-blank and contrary when two screen frames rotate, it is possible to inside and outside Screen frame centrifugal force offsets.Entirety is to the no dynamic load of support.Due to the unstability of four-bar mechanism, in two screen frame Middle has added a crankshaft as passive constraint, and two screen frames is allowed to keep rotating horizontally forever.

The present invention has the advantages that adjacent connection sieve beam does periodically variable circular motion under the driving of crankshaft, The rubber sieve plate being mounted on sieve beam not only does strained movements, and the circular motion also with sieve beam circumnutates movement, is more advantageous to object The screening of material.Other vibrating screens are different from, because of the balance of inside and outside screen frame centrifugal force, do not have dynamic load substantially over the ground, so not having Have and add isolation spring, structure is simple, easy to maintenance.

Detailed description of the invention:

Fig. 1 is agent structure schematic diagram of the invention；

Fig. 2 is inventive drive means and transmission structures schematic diagram；

Fig. 3 is inside and outside screen frame structural schematic diagram of the invention；

Fig. 4 is front end crankshaft structure schematic diagram of the invention；

Fig. 5 is the structural schematic diagram of outer screen frame connection sieve beam；

Fig. 6 is the structural schematic diagram of interior screen frame connection sieve beam；

Fig. 7 is the structural schematic diagram of drive shaft；

The symbol description of major part in figure: the outer screen frame of screen frame, 2-, 3- crankshaft, 4- driving device, 5- transmission dress in 1- It sets, 6- support device, 7- motor, 8- small belt pulley, the V-belt 9-, 10- big belt pulley, 11- bearing gland, 12- lobed shaft coupling Device, the labyrinth 13- lid, 14- transmission short axle, 15- bearing, the outer screen frame side sieve plate of screen frame side sieve plate, 17-, the outer screen frame of 18- connect in 16- Connect sieve beam, screen frame connection sieve beam in 19-

Specific embodiment:

The present invention is described in detail with specific embodiment with reference to the accompanying drawing.

As shown in Figure 1, the invention discloses a kind of balance roller flip flop screen, including interior screen frame, outer screen frame, driving transmission Device and support device.

Such as Fig. 1, shown in Fig. 3, interior screen frame is made of interior screen frame side plate 16, interior screen frame connection sieve beam 19, and connection sieve beam 19 was both Play the role of placing sieve plate, and can connect two side plates and form it into a complete screen frame.Outer screen frame is by outer screen frame side Plate 17, outer screen frame connection sieve beam 18 form.As shown in figure 4, and when two screen frames rotation when, the sieve case bay of two screen frames is enough, Guarantee does not interfere phenomenon, and equipment is kept to run well.

As shown in Fig. 2, driving device 5 is made of motor 7, small belt pulley 8, V-belt 9 and big belt pulley 10.Transmission device By transmission short axle 14, bearing 15, bearing gland 11 and labyrinth lid 13 are formed.Transmission device 5 is connected most by lobed shaft coupling 12 Front end crankshaft, the outermost end center of rotation and the rearmost end crank rotation line of centres of front end the crankshaft total mass center of inside and outside screen frame excessively. Motor 7 is sequentially connected on transmission device by the belt of big small belt pulley, and transmission device is mainly by bearing and transmission short axle And bearing gland composition, there is oil filler point above bearing gland, bearing is lubricated for injecting lubricating oil.Entire transmission Device is since one end connects lobed shaft coupling, so itself being fixedly mounted in bearing seat supports.Since whole device is installed In the outside of screen(ing) machine, so simplifying the structure of device, maintenance and repair is very convenient without sealing.

As shown in Figure 1, support device is made of front support and rear support, the purpose of support mainly supports screen(ing) machine solid Get up calmly, and place front and back crankshaft, there is the pedestal of fixing bearing radial direction in support, in addition there are also bearing platens to be used to admittedly The axial direction that dead axle is held.Entire crankshaft is set to be able to maintain level when rotating.

The course of work of the invention is achieved in that starting device, and motor 7 is by V-belt 9 come driving transmission device 5 rotations, transmission device passes through lobed shaft coupling again forces front end crank rotation, since whole device forms parallel four side Shape linkage, two screen frames are in the two neighboring upper lower section of crankshaft, and 180 ° of the phase phase difference that the two is rotated around total mass center is (as schemed 7) the adjacent sieve beam, being mounted on inside and outside screen frame just respectively does circular motion, and contrary inertia force equal in magnitude exists It offsets each other on straight line, realizes zero dynamic load to ground.The polyurethane sieve plate of sieve beam is mounted on due to adjacent sieve beam Circular motion and do strained movements and circumnutate movement, improve screening efficiency to a greater degree, preferably avoid material plug-hole and show As.Integral device so reduce the loss of energy, is improved work efficiency, and subtract significantly due to zero dynamic load to ground Injury of the noise of equipment to human body is lacked.

Claims (3)

1. a kind of self-balancing roller flip flop screen, mainly by interior screen frame (1), outer screen frame (2), crankshaft (3), driving device (4), biography Dynamic device (5), support device (6) composition, it is characterized in that: outer screen frame is integral, interior screen frame is integral, and the two is by three songs Axis connection, crankshaft are mounted on bearing block by bearing, and bearing block is fixed on inside and outside screen frame side plate, finally connect inside and outside screen frame It is connected together, the outermost end of front end crankshaft connects lobed shaft coupling, and rear end crankshaft and intermediate crankshaft mainly play a supportive role, pass Dynamic device is used to connect crankshaft and transmission device by bearing, bearing block and transmission short axle composition, lobed shaft coupling, and driving device is logical Cross triangle band connection transmission device.

2. self-balancing roller flip flop screen according to claim 1, it is characterised in that: crankshaft rotation centerline passes through two sieves Total mass center of frame, inside and outside two screen frame respectively do circular motion rotating around total mass center of two screen frames.

3. self-balancing roller flip flop screen according to claim 1, it is characterised in that: be equipped with the gold of vibration isolation in support Belong to spring.