DK147383B - SUPPORT FOR CROSS HEAD SLIDES IN STAMPING MACHINES - Google Patents

Description

i in 147383

The invention relates to a support for cross-head slides in piston machines and g of the kind specified in the preamble of claim 1.

Such cross-head slides in piston machines, especially in diesel engines, have heretofore been constructed in that runners have been screwed together for sliding shoes and vertical end walls sliding elements consisting of steel plate and forming components of stands or a machine stand.

To accommodate normal forces which must be transmitted to the posts in a direction perpendicular to the slide, horizontal cross-ribs so far disposed over the height of the slide webs, which are firmly connected, preferably joined together with the end walls, sidewalls and the outer end walls of the stands.

20

Practice has shown that the known constructions of such crosshead slides and their supports are demanding, and that in particular at the reinforcing ribs of the support at their connection points with the free ends of the end walls, impermissible stress points occur.

The present invention is intended to provide a support of the kind in which the said tension peaks can be avoided and at the same time the overall construction of the sliding track support can be simplified, and this is achieved according to the invention in that the support is designed as claimed in claim 1 share.

In this embodiment, the stiffening walls, seen over the height of the sliding track, are not punctured with the end wall rear, but on the whole height, thereby reducing the tension points, 5 and providing an improved stiffness of the sliding track support.

Significant constructive simplification of the support can be achieved by designing the support 10 as claimed in claim 2. The coating can be sprayed or adhered in known manner.

In the support according to the invention, it is also possible to screw on the known sliding track elements 15 similar supports, e.g. of gray cast iron pieces, on the front end wall.

In some circumstances, it is necessary to cool the slides by means of a refrigerant. Therefore, in known embodiments of the support, there are possibly cooling ducts flowing through a refrigerant, for example in the sliding track elements or between these and the end walls. of oil. 1 2 3 4 5 6

Finally, by designing the support 2 as specified in claim 3, an additional reinforcement 3 of the structure can be obtained for transferring the forces 4 acting over the inclined stiffening walls to the 5 stands.

6

The invention will now be explained in more detail with reference to the drawing, in which FIG. 1 is a purely schematic and sectional view of a line I-I of FIG. 2 shows a single stand for a diesel engine, while FIG. 2 in a section II-II of FIG. 1 shows two neighboring stands in the engine with an intersecting crosshead seen from above.

A known stand 1 formed by welding 10 of steel plates has base plates 2 which together with inclined outer walls 3 and end walls 4 form two trapezoidal frames in the picture. These are connected to each other by means of a common cover plate 5. The outer wall 3 and the end wall 4 are joined by the two trapezoidal frames by means of side walls 6. Between these extend wooden anchors 7, by means of which the stand 1 is compared with a not shown. base plate and engine cylinder sheaths under bias.

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In addition, the sidewalls 6 in the middle part continue between the two end walls 4 of the intermediate walls 8, which at their undersides are completed by a transverse carrier 9. As can be seen from FIG. 2, the two end walls 4 of the two 25 stands 1 form slides for sliding shoes 10 on a cross-head pin 11 which is known in a known manner to the piston rod 12 and housed in a bearing housing 13.

In the motor shown, the front faces of the end walls 30 4 which extend beyond the side walls 6 serve directly as sliding tracks for the sliding shoes 10. In the area which serves as a sliding track, these front sides may optionally be provided with a coating, e.g. of a self-tapping material, or be coated with, e.g. adhered to a foil carrying such material.

For transferring the normal forces acting from the crosshead pin 11 above 5 the sliding paths 10 on the end wall face to the stands 1, free ends 15 on the end walls 4 on their backside are welded with obliquely extending stiffening walls 14 supported on the surfaces of the side walls 6 and welded to these 10. surfaces.

One of the side walls 6, the backs of the end walls 4 and the stiffening walls 14 together form side boundaries in a cavity 16 which is closed at the bottom by means of a triangular bottom plate 17 and above by means of the common cover plate 5 · If necessary, this cavity 16 may be component of a refrigerant system 20 schematically indicated only in FIG. 1, and in which a coolant stream 20 is maintained by a pump 18.

In the region of the coatings for two neighboring stiffening walls 14 on the side walls 6, the standard structure in the space between the side walls 6 is reinforced by spacing walls 19 to increase the stiffness of the side wall 6 with the relatively large surfaces in this high-load area.