SERVICE PLATFORM ARRANGEMENT FOR A FIBER WEB MACHINE |
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申请号 | EP10769378.0 | 申请日 | 2010-04-29 | 公开(公告)号 | EP2425053B1 | 公开(公告)日 | 2014-04-02 |
申请人 | Metso Paper, Inc.; | 发明人 | AALTIO, Lauri; BULLER, Jyrki; VÄÄTÄNEN, Risto; | ||||
摘要 | |||||||
权利要求 | |||||||
说明书全文 | The present invention relates to a service platform arrangement for a fiber web machine according to the preamble of patent claim 1. Many machines and process equipment used for example in industry are large and still access to the vicinity of their components must be arranged for service and operation. Typically this has been taken care of by providing the machine with service platforms placed in appropriate locations. The service platforms must be carried out so that it is safe to move on them and to run and service the machine. Thus the platforms are equipped with railings. In fiber web machines, there are various partial processes associated with the web formation and the treatment of the web and the components of the fiber web machine performing such processes have been placed optimally in relation to each other in view of the progress of the process. The components of the fiber web machine include also additional apparatus such as fabric reconditioning equipment and measuring equipment etc. It is essential for the operation and service of the fiber web machine that access to the various components has been provided. Further, a fiber web machine comprises service platforms. However, the platforms have often been designed and build separately for each partial process and thus moving between the partial processes may be cumbersome for the personnel. The prior art service platforms of fiber web machines are typically walkways provided in support of brackets in the body of the fiber web machine. This kind of an arrangement is often slow to set up due to among other thing the large number of separate components. It is known as such to use glass in railings. Publications The railings of the service platforms of fiber web machines are typically of tube construction with tube poles at certain spaces to support the essentially horizontal hand rail. The rail may be also in a slightly inclined position for example in connection with stairs. This kind of a tubular construction is fixed to the service platform in a known way so that there is a hole and/or a sleeve at the railing pole in the service platform into which the railing pole is guided and secured with for example through bolts. Although the structure as such is sturdy and reliable in operation, the building of such a service platform is to some extent inefficient. Further, the structure presupposes great accuracy in the positioning of the sleeves provided in the service platforms for the railing to correspond exactly to the pole division in the railing. An object of the invention is to provide a service platform arrangement for a fiber web machine which among other things permits more efficient moving between the various components of the fiber web machine and which facilitates the daily work of the personnel main railing pole. The object of the invention is solved in the way described in patent claim 1. The additional other characteristic features of the invention are disclosed in the appended patent claims and the following description of the embodiments of the drawings. A service platform arrangement of a fiber web machine according to the invention comprises at least a railing and a walkway provided in connection with each other. The railing of the service platform arrangement is a supporting structure and the walkway of the service platform arrangement is supported to the railing. The railing includes a support girder at its first side and a hand rail at the other side, i.e. the opposite side in respect of the first side, and at least one intermediate member connecting the support girder and the hand rail and being secured to them. The railing preferably comprises at its first side a support girder provided with a securing element by means of which the railing is secured both to the walkway and the fiber web machine. The securing element comprises a recess parallel with the support girder, the opening width of the recess being smaller than the maximum width to the recess. The cross section of the recess is preferably unchanged along its entire length. The securing element permits easy change of the securing point. According to an embodiment the railing is formed essentially of said support girder, the hand rail and at least one intermediate member. The walkway has been fixed to said securing element and the service platform arrangement is supported onto the fiber web machine via said securing element. The service platform arrangement has been provided to extend to the area of at least two different machine sections essentially at the same horizontal level. A service platform arrangement according to a preferred embodiment includes service platform arrangements located at least at two different horizontal levels, both disposed to extend along at least two different machine sections. Preferably the railings of said at least two service platforms at different horizontal levels have been disposed essentially at the same vertical plane. The invention and its operation are explained below with reference to the accompanying schematic drawings, in which
The railings of the superimposed service platform arrangements have preferably been arranged essentially at the same vertical plane, in other words substantially at one and the same transverse distance from the machine longitudinal center line, as shown in In the service platform arrangement the railing 12 is preferably a so-called supporting structure whereby the supporting of the service platform arrangement is carried out mainly by means of the railing. The walkway 14 of the service platform arrangement is supported to the railing. The service platform arrangement 10 is supported on the body or other structure 18 of the fiber web machine by means of brackets 20 transverse to fiber web machine, the brackets being secured at one of their ends to the body or other structure of the fiber web machine and at their other end to the railing 12. The railing comprises at its first side 122 a support girder 128 and at its other side 124 a handrail 1210. The first side means the bottom edge of the railing when the service platform has been assembled in its place, and the other side the top edge of the railing and thus they are the opposite sides of the railing. The support girder extends in the longitudinal direction of the railing 12 along the entire length of the railing but it may be composed of more than one parts connected to each other. Both the support girder 128 and the handrail 1210 are preferably so-called profile bars with a hollow inside and manufactured by extrusion of light metal. The support girder has been provided at its first side 1212 with a securing element comprising a recess 1214 in the direction of the support girder, the opening width S1 of the recess being smaller than its maximum width S2. Here the width means the average width. By means of the recess, both the walkway 14 and the brackets 20 may be secured to the support girder with a tube connection. The recess, which may also be called a groove, in the direction of the support girder can accept the nut or the corresponding element used in the securing. The collars of the recess in turn detain the nut or the corresponding element. The walkway may be secured to the support girder with a relatively dense spacing whereby also a bracket 20 is secured to the support girder only in connection with certain tube connections. The bracket 20 has been secured at its other end to the body 18. There is a groove 1-216 provided in the support girder at the side opposite to the first side 1212 and extending along the entire length of the support girder. In the same way the hand rail includes a groove 1218. The railing further comprises an intermediate member 1220 secured in the groove of the support girder and the groove of the hand rail. The intermediate member is in the embodiment of .The intermediate member may be implemented also in other ways 1120'. The plate-like structure may be manufactured also of other materials such as aluminum or other light metals. The structure may also be layered whereby its noise and heat isolation capacity improve as well as its stiffness. According to an embodiment the intermediate member may also be composed of a number of separate elements which may also be called railing poles. Further, the structure may be different from a plane and it may be a formed structure comprising projections extending from the surface. The structure may also be plane-like and comprise combinations of different materials such as various combinations of glass and aluminum panels. In any case, the structure is secured to the hand rail and the support girder via a groove in the longitudinal direction of the railing. There is a control element 49 such as a guide or a corresponding member provided between the machine level and the walls 42 to support of the lower part of the walls in a controlled way. This kind of an arrangement stops locally the noise, possible splashes, heat etc. of the fiber web machine from advancing to the machine level whereby the effect is directed exactly to the area where for example the operating personnel moves most. When the wall is transparent the monitoring possibilities of the operation of the machine is maintained particularly good. According to another embodiment the walls may be provided to be individually support for example on the machine level. Then the walls may be placed locally for example between a component creating noise and the walking route of the monitoring and service personnel whereby the personnel is less exposed. The essentially transparent noise control elements, i.e. the walls, improve the noise control of the fiber web machine without essentially increasing the surfaces impairing the visibility or making the service/monitoring more cumbersome. It must be noted that only a few most preferred embodiments of the invention have been presented above. Depending on the matrix used the details of the manufacture of the composite structure may vary. Thus, it is clear that the invention is not limited to the embodiments presented above but it may be modified in many ways within the scope defined by the appended patent claims. |