Device and method for positioning shell parts
Device and method for the mutual positioning of shell parts. Such shell parts can be used for constructing a large cylinder, for example a silo. The shell parts are provided with end flanges which extend at right angles thereto. Once the shell parts have been brought into the correct position, the end flanges are connected to one another in any suitable way. It is proposed to position the shell parts and/or end flanges with respect to one another in the desired position by arranging supporting rollers on the side where there are no end flanges. On the other side, clamping rollers are used which are at an angle to one another. A combination of in each case a supporting roller and a clamping roller provides both the correct mutual positioning of the shell parts with respect to one another and the pressing against one another of the shell parts.
1. A device ( 1 ) for the mutual positioning of two shell parts ( 4 , 5 ) which rest on one another via end flanges ( 6 , 7 ), said device comprising:
a frame ( 11 ) having an opening ( 14 ) adapted to receive two shell parts ( 4 , 5 ) with end flanges ( 6 , 7 ), wherein on one side of said opening on said frame, a supporting member ( 15 , 16 ) for shell parts is arranged and, on the other side of said opening, at a location of said supporting member, two adjacent clamping members ( 25 , 26 ) are arranged, wherein one of said members ( 15 , 16 , 25 , 26 ) is displaceably arranged with respect to said frame, each of said clamping members has an engagement end for engaging the end flange of a shell part,
wherein said clamping members ( 25 , 26 ) are fitted at such an angle with respect to one another that, upon displacement of said member ( 15 , 16 , 25 , 26 ) with respect to said frame ( 11 ) each clamping member ( 25 , 26 ) exerts a force on said supporting member ( 15 , 16 ) with a first component ( 22 ) directed along a boundary line ( 9 ) of said clamping members ( 25 , 26 ) towards said supporting member ( 15 , 16 ) and a second component ( 21 ) at right angles thereto, wherein said second components are directed towards one another in order to place the end flanges of the shell parts against one another.
2. The device according to claim 1 , wherein one or more of said members ( 15 , 16 ; 25 , 26 ) is a roller member.
3. The device according to claim 2 , wherein said roller member is provided with a rotation motor ( 17 , 27 ).
4. The device according to claim 1 , wherein said supporting member ( 15 , 16 ) is arranged so as to be displaceable with respect to the frame in the direction of said boundary line ( 9 ).
5. The device according to claim 1 , wherein said supporting member ( 2 ) comprises a pair of supporting rollers ( 15 , 16 ) which are arranged one above the other.
6. The device according to claim 1 , wherein one of said clamping members ( 25 ) is arranged so as to be displaceable with respect to the frame in direction of said boundary line ( 9 ).
7. The device according to claim 1 , wherein one of said clamping members ( 26 ) is arranged so as to be displaceable with respect to said frame in a direction at right angles to said boundary line ( 9 ).
8. The device according to claim 1 , wherein said frame comprises a U-shaped frame.
9. An assembly comprising a device ( 1 ) according to claim 1 , and further comprising an auxiliary device ( 31 ) for supporting shell parts in a further location.
10. A method for positioning end flanges ( 6 , 7 ) of two adjacent shell parts ( 4 , 5 ) with respect to one another, comprising:
supporting said shell parts on a side facing away from said end flanges using a supporting member ( 15 , 16 ) which absorbs a force in the direction of the boundary line ( 9 ) between said shell parts into a frame ( 11 ),
introducing an opposite force into said frame ( 11 ) by two clamping members ( 25 , 26 ) which are at an angle to one another and are arranged on a side of said end flanges ( 6 , 7 ) on said frame ( 11 ), each of which clamping members exerting a pressing force ( 21 ) on said end flanges which is directed in an opposite direction.
11. The method according to claim 10 , wherein said member comprises a roller member ( 15 , 16 ; 25 , 26 ) and is rotatably driven.
12. The method according to claim 10 , wherein said shell parts comprise cylinder parts having end flanges which extend at right angles to a cylinder wall.
13. The method according to claim 12 , wherein, during the positioning, a mutual position of the end flanges ( 6 , 7 ) is fixed by connecting the latter.
14. The method according to claim 13 , wherein, after said end flanges have been connected, the shell parts are sealed with respect to one another.
15. The method according to claim 10 , wherein said shell parts are supported further, in such a manner that said end flanges ( 6 , 7 ) are only placed against one another at said members.