Device and method for alignment

Abstract

The present invention refers to a system and a device ( 10 ) for alignment of at least one alignable plane with reference to at least one reference plane. The device includes a main part ( 11 ), a light source ( 18 ) and a number of contact points ( 21 a, 21 b, 21 c ), and the light source ( 18 ) is provided to emit a light beam ( 25 ) with a scattering angle in one plane.

1 - 16 . (canceled)  
   
   
       17 . A sheave or gear wheel alignment device ( 10 ) for alignment of at least one alignable plane on one sheave or gear wheel with reference to at least one reference plane on another sheave or gear wheel, which device ( 10 ) comprises a number of contact points ( 21   a ,  21   b ,  21   c ) and a main part ( 11 ) having a light source( 18 ), wherein the light source ( 18 ) is arranged to emit a light beam ( 25 ) with a scattering angle in one plane, and wherein said contact points ( 21   a ,  21   b ,  21   c ) are adapted to fasten the device ( 10 ) with respect to the reference plane so as to transfer the position and direction of the reference plane to the light beam ( 25 ).  
   
   
       18 . A device according to  claim 17 , wherein the contact points are displaceable relative to each other.  
   
   
       19 . A device according to  claim 18 , wherein the scattering plane is essentially parallel to the alignable plane.  
   
   
       20 . A device according to  claim 19 , wherein the device further comprises an arm ( 12 ), and the arm ( 12 ) and the main part ( 11 ) are rotatable relative to each other.  
   
   
       21 . A device according to  claim 20 , wherein the arm ( 12 ) is provided with at least one of said contact points ( 21   c ).  
   
   
       22 . A device according to  claim 21 , wherein the contact points are arranged to take optional positions in a plane, limited only by an area of the physical dimensions of the device, and the contact points independent of position, allow the device ( 10 ) to transfer a position and direction from the reference plane in two relative each other essentially perpendicular coordinates.  
   
   
       23 . A device according to  claim 17 , wherein the scattering plane is essentially parallel to the alignable plane.  
   
   
       24 . A device according to  claim 23 , wherein the device further comprises an arm ( 12 ), and the arm ( 12 ) and the main part ( 11 ) are rotatable relative to each other.  
   
   
       25 . A device according to  claim 24 ,wherein the arm ( 12 ) is provided with at least one of said contact points ( 21   c ).  
   
   
       26 . A device according to  claim 25 , wherein the contact points are arranged to take optional positions in a plane, limited only by an area of the physical dimensions of the device, and the contact points independent of position, allow the device ( 10 ) to transfer a position and direction from the reference plane in two relative each other essentially perpendicular coordinates.  
   
   
       27 . A device according to  claim 17 , wherein the device further comprises an arm ( 12 ), and the arm ( 12 ) and the main part ( 11 ) are rotatable relative to each other.  
   
   
       28 . A device according to  claim 17 , wherein the contact points are arranged to take optional positions in a plane, limited only by an area of the physical dimensions of the device, and the contact points independent of position, allow the device ( 10 ) to transfer a position and direction from the reference plane in two relative each other essentially perpendicular coordinates.  
   
   
       29 . A sheave or gear wheel alignment system for alignment of at least one alignable plane on one sheave or gear wheel with reference to at least one reference plane on another sheave or gear wheel, which device ( 10 ) comprises a number of contact points ( 21   a ,  21   b ,  21   c ) and a main part ( 11 ) having a light source ( 18 ), wherein the light source ( 18 ) is arranged to emit a light beam ( 25 ) with a scattering angle in one plane, and said contact points ( 21   a ,  21   b ,  21   c ) are adapted to fasten the device ( 10 ) with respect to the reference plane so as to transfer the position and direction of the reference plane to the light beam ( 25 ), and that said system comprises indicator devices ( 26   a ,  26   b ,  26   c ) intended to be arranged on the alignable plane.  
   
   
       30 . The system according to  claim 29 , wherein the scattering plane is essentially parallel to the alignable plane.  
   
   
       31 . The system according to  claim 29 , wherein the indicator device comprises a part for attachment ( 27 ) to the alignable plane and a body provided with a measurement mark ( 29 ) positioned to be illuminated by said light beam ( 25 ) when said alignable plane is aligned with said reference plane.  
   
   
       32 . The system according to  claim 31 , wherein alignment is achieved when the light beam essentially coincides with the measurement mark ( 29 ).  
   
   
       33 . The system according to  claim 29 , wherein at least three indicator devices are arranged on said plane.  
   
   
       34 . The system according to  claim 29 , wherein the indicator device is part of said plane.  
   
   
       35 . A method for alignment of at least one alignable plane with reference to at least one reference plane, where the alignable plane and the reference plane are sheaves or gear wheels for power transmission between rotating shafts, so that said planes become essentially plane-parallel, comprising the steps of: 
 attaching a device ( 10 ), comprising a number of contact points ( 21   a ,  21   b ,  21   c ) and a main part ( 11 ) having a light source ( 18 ) and, on said reference plane by means of said contact points,    emitting a light beam ( 25 ) with a scattering angle in one plane,    arranging on said alignable plane indicator devices ( 26   a ,  26   b ,  26   c ) provided with measurement marks ( 29 ), and    adjusting the alignable plane with regard to the measuring marks so that each mark coincides with an intersectional line between the light beam and the indicator device.