DE202007010273U1 - Unbalance drive for screening machines - Google Patents

Abstract

Facility for driving a screen body (6) of a screening machine (1) for in particular mineral crushed materials such as z. As oil sands with a drive motor (1 '), a so in operative connection synchronous transmission (3) with at least two output shafts (4, 5), which in pairs with the same speed phase in opposite directions rotate, wherein the drive motor (1 ') and the synchromesh gear (3) separately from the screen body (6) laterally next to the screen body (6) stationary are stored and do not resonate with it, each output shaft (4, 5) is associated with a single horizontal shaft (19, 20), the Unbalance elements (15, 16, 17) and by means of a torsionally rigid Cardan shaft (4 ', 5') connected to the output shaft (4, 5) and axially parallel to the adjacent shaft (19, 20) and transversely to the conveying direction (F) of the screen body (6) is arranged, the unbalance elements (15, 16, 17) in the horizontal direction between the side walls (6 ') of the screen body (6) are arranged, the shaft (19, 20) by means of bearing elements (18, 18 ') at one with the side walls (6') connected traverse (21) is supported, ...

Description

The The invention relates to a device for driving an at least a Siebkörper having screening machine.

the DE 7811967 U1 is a vibration generating drive for processing machines, z. B. an elliptical vibrating screen to refer to the formation of true elliptical oscillations, with two oscillations generating these oscillators and synchronous with the same speed and counter rotating, different imbalance weights. The imbalance weights are arranged on two continuous shafts, wherein a transmission in addition to the oscillating part of the machine, for. B. the screen box, is fixed. The waves of the imbalance weights are connected by drive shafts or similar parts with the transmission outputs. The unbalance weights carrying continuous waves are designed as rigid or propeller shafts.

A includes drive unit derived from the applicant an imbalance drive for generating linear oscillations large Machine screens, wherein the vibration excitation by so-called double unbalance transmission he follows. Such a transmission comprises two in a housing axially parallel shafts with unbalance disks located thereon, their oppositely directed rotational movement by a pair of gears is synchronized within the case. The unit forms an imbalance module. One of the two waves protrudes on both sides out of the case, is driven unilaterally and can over the other end of the shaft another such Drive unbalance module. This drive unit contains for Achieving sufficient vibration power six on the screen body mounted unbalance modules. These are in two paraxial groups arranged on trusses. The drive is made by a non-resonant stationary unit consisting of electric motor and strong synchronization gear next to the screening machine. Here is a lot of space on the Screening machine needed and it is an unnecessary high "dead" resonating mass of imbalance modules, because of in these existing additional synchronous gears, the oil lubrication and necessarily massively built Transmission housing., Available.

outgoing from this prior art, the invention is the object of Basically, an unbalance drive for a strainer to provide a large-capacity screening machine, which does not have these disadvantages, but with the strainer mitschwingende mass the sum of its imbalance masses as possible little exceeds and its unbalanced mass changed modularly can be.

These Task is solved by a device for driving a sieve body of a screening machine with a drive motor, a synchronous transmission in operative connection with at least two output shafts, which in pairs with the same speed in opposite directions rotate with each other, the drive motor and the synchromesh separately from the screen body laterally next to the screen body are stored stationary and not resonate with this, each output shaft is assigned a single horizontal wave, the Has unbalance elements and by means of a rigid hinge shaft connected to the output shaft and axis parallel to the adjacent Shaft and transverse to the conveying direction of the screen body is arranged, the unbalance elements in the horizontal direction between the side walls of the screen body are arranged, the shaft by means of bearing elements at one with the side walls connected traverse is supported, the imbalance elements exclusively arranged directly on the shafts, in the axial direction the waves between the imbalance elements exclusively Bearing elements arranged on the shafts and the bearing elements supported by a cross member connected to the side walls are.

advantageous Further developments of the inventive concept are the dependent claims refer to.

Favorable This results in groups of imbalance elements and their bearings summarized to unbalance modules. Each of these imbalance modules can be surrounded by a housing and also the associated Shaft section include. It is also conceivable only parts of the imbalance and to provide the bearing elements within a housing.

Analogous To the prior art, the respective output shaft of the synchronous transmission with the first seventh-side provided unbalance module over a torsionally rigid propeller shaft, such. B. a propeller shaft in operative connection stand. Here, the propeller shaft ends engage on the one hand at the free end the output shaft of the synchronous transmission and on the other hand at the associated Shaft end of the first shaft section.

Separate Imbalance modules are spaced so that they - to compensate of mounting tolerances - over short rotating torsionally rigid Compensating couplings are brought into operative connection with each other can. In the installed state thus becomes a continuous wave between the synchromesh and the individual unbalance elements educated.

The The invention relates in particular to the generation of linear vibrations of the screen body, but is not limited thereto.

It are also several drive units on a screen body conceivable, and also several strainer with appropriate Drive inside a screening machine.

Of the Subject of the invention is based on an embodiment illustrated in the drawings and will be described as follows. It demonstrate:

1 and 2 : a principle constructive structure of the inventive concept in different views;

3 and 4 : a partial representation of an imbalance module in different views and

5 and 6 : a basic structure of the concept of the invention containing different trained storage area.

The 1 and 2 show schematic diagrams of a screening machine 1 , The screening machine 1 is via a drive motor 1' powered by a drive shaft 2 with a synchromesh gear 3 connected is. The synchromesh 3 has two axis-parallel output shafts 4 . 5 , The screening machine 1 is only partially shown here and includes a screen body 6 , the indicated sidewalls 6 ' having. Between the side walls 6 ' of the screen body 6 There are several imbalance modules 7 that are in the range of trusses 21 between the side walls 6 ' of the screen body 6 are provided interchangeable. In the area of the respective traverse 21 Shaft sections extend 8th , which are approximately co-axial alignment, as the respective output shaft 4 . 5 of the synchronous transmission 3 are arranged. About trained as cardan shafts torsionally rigid cardan shafts 4 ' . 5 ' , which in their end areas with universal joints 9 . 10 are provided, the respective output shaft 4 . 5 of the synchronous transmission 3 with the first unbalance module 7 connected. This is where the universal joint intervenes 10 at the end area 11 of the first shaft section 8th at. The individual shaft sections 8th are about torsionally stiff compensation couplings 12 connected with each other. With the reference number 13 the actual sieve is indicated.

The 3 and 4 show in different views a single imbalance module 7 , It is a case 14 shown that part of the imbalance module 7 includes. Every unbalance module 7 includes three spaced unbalance elements 15 . 16 . 17 standing on a wave section 8th are attached. Between individual unbalance elements 15 . 16 . 17 are bearing elements 18 . 18 ' positioned. In this example, the imbalance elements are 15 . 17 outside the case 14 arranged. Every unbalance module 7 includes attachment areas 22 about which it is in the area of the associated traverse 21 can be attached to this (see also 2 ).

The 5 and 6 show once again the schematic structure and the function of the imbalance drive according to the invention. Shown are in the form indicated the screening machine 1 , the drive motor 1' , the drive shaft 2 of the drive motor 1' , the synchromesh 3 as well as its axis-parallel output shafts 4 . 5 , The synchromesh 3 includes at least one central gear 3 ' and two output gears 3 '' , In the area of the screening machine 1 are the side walls 6 ' , the trusses 21 as well as imbalance modules 7 recognizable, each on a shaft section 8th are provided. Also recognizable are the first unbalance module 7 provided joints 9 . 10 as well as between the imbalance modules 7 arranged torsionally rigid compensation clutches 12 ,

The difference between the 5 and 6 lies in that at 5 each imbalance module 7 three imbalance elements 15 . 16 . 17 be used while at 6 only two imbalance elements 15 . 16 are provided. This also requires a different bearing design. While in 5 two bearing elements 18 . 18 ' are provided in 6 only a single bearing element 18 used.

Advantages of the invention Unbalance drive:

Compared to the illustrated prior art, the respective internal synchronization transmission (gear pairs) contained in the twin unbalance transmission modules and their second shafts are completely eliminated. Likewise, the necessary lubrication systems are eliminated. In addition, the gear housing is much less expensive necessary because no exact gear bearings and no lubrication system and no housing seals are needed. As a result, in the imbalance modules according to the invention 7 with the same "active" imbalance mass space requirement, total weight, mitschwingende "dead mass" and price much lower than in known designs.

Of the reduced space required (with the same external dimensions) the adaptation of significantly increased "active" imbalance masses and significantly less resonant "dead weight". That allows alternatively longer sieve trays, higher Throughput or smaller screening machines at the same throughput. The is cost-cutting and allows by minimizing the total weight and outside dimensions the road transport also from Screening machines higher throughput than before.

The modular adaptability of the imbalance mass to the size and performance class of screening machines is finer tiered possible.

The device according to the invention is without Other applicable to conveyors, vibratory conveyors, Schüttelrinnen or similar facilities.

1

screening machine

1'

drive motor

2

drive shaft

3

synchromesh

3 '

gear

3 ''

output gear

4

output shaft

4 '

propeller shaft (Torsionally rigid)

5

output shaft

5 '

propeller shaft (Torsionally rigid)

6

screen body

6 '

Side wall

7

unbalance module

8th

shaft section

9

Universal joint

10

Universal joint

11

shaft section (End)

12

Flexible coupling (Torsionally rigid)

13

scree

14

casing

15

unbalance element

16

unbalance element

17

unbalance element

18

bearing element

18 '

bearing element

19

wave

20

wave

21

traverse

22

fastening area

F

conveying direction the screening machine

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 7811967 U1 [0002]

Claims (9)

Device for driving a sieve body ( 6 ) a screening machine ( 1 ) for particular mineral crushing such. B. oil sands with a drive motor ( 1' ), a synchronous transmission ( 3 ) with at least two output waves ( 4 . 5 ), which rotate in pairs opposite to each other at the same rotational speed, the drive motor ( 1' ) and the synchromesh ( 3 ) separately from the screen body ( 6 ) laterally next to the screen body ( 6 ) are stationary and do not resonate with it, each output shaft ( 4 . 5 ) a single horizontal wave ( 19 . 20 ), the unbalance elements ( 15 . 16 . 17 ) and by means of a torsionally rigid propeller shaft ( 4 ' . 5 ' ) with the output shaft ( 4 . 5 ) and axially parallel to the adjacent wave ( 19 . 20 ) and transversely to the conveying direction (F) of the screen body ( 6 ), the imbalance elements ( 15 . 16 . 17 ) in the horizontal direction between the side walls ( 6 ' ) of the screen body ( 6 ), the shaft ( 19 . 20 ) by means of bearing elements ( 18 . 18 ' ) at one with the side walls ( 6 ' ) connected traverse ( 21 ), the unbalance elements ( 15 . 16 . 17 ) exclusively directly on the waves ( 19 . 20 ), in the axial direction of the shafts ( 8th ) between the imbalance elements ( 15 . 16 . 17 ) only bearing elements ( 18 . 18 ' ) on the waves ( 19 . 20 ) and the bearing elements ( 18 . 18 ' ) at one with the side walls ( 6 ' ) connected traverse ( 21 ) are supported. Device according to claim 1, characterized in that the waves ( 19 . 20 ) are each formed of alternating successively arranged wave sections ( 8th ) and these torsionally rigid connecting compensating couplings ( 12 ), which are all substantially aligned, Device according to claim 2, characterized in that the unbalance elements ( 15 . 16 . 17 ) individually at the shaft sections ( 8th ) are arranged. Device according to claim 2, characterized in that several unbalance elements ( 15 . 16 . 17 ) on a shaft section ( 8th ) are arranged. Device according to claim 2, characterized in that the shaft sections ( 8th ) of a wave ( 19 . 20 ) each by means of bearing elements ( 18 . 18 ' ) together on a traverse ( 21 ) are stored. Device according to claim 2, characterized in that a shaft section ( 8th ) with the arranged on this unbalance elements ( 15 . 16 . 17 ) and bearing elements ( 18 . 18 ' ) an unbalance module ( 7 ). Device according to claim 6, characterized in that an unbalance module ( 7 ) is completely or partially surrounded by a housing. Device according to one of claims 6 or 7, characterized in that the imbalance modules ( 7 ) on the trusses carrying them ( 21 ) are mounted interchangeably. Device according to one of claims 1, 5 or 8, characterized in that the trusses ( 21 ) in the upper region of the screen body ( 6 ) transversely to its conveying direction (F) in each case with its two side walls ( 6 ' ) are connected.