DK159575B - STANDS WITH A REPOSITION FOR THE CROSS HEAD SLIDES - Google Patents

Description

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DK 159575 B

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a stand having a rejection of the cross-head slider webs on piston machines, wherein the stand between bottom and cover plates has obliquely extending outer walls and vertical inner walls which are connected to sidewalls extending over a whole height - the inner walls over a portion. of the height of their faces facing each other, further exhibit sliding paths over which normal forces are transferred from the cross-head pin to the stand * 15 For the absorption of the normal forces, which at the slides to the cross-heads of piston machines - especially in diesel engines - must be transmitted in a perpendicular direction. on the stands, hitherto applied to the back of the spirit walls either 20 horizontal transverse ribs distributed over the height of the slides or the apex angle between the inner wall ends and the side walls extending vertical stiffening walls (CH-PS 625 603). Practice has shown that the constructions described above are too cumbersome * 25

Further, a stamping machine is sought for a construction which is as compact as possible; this requires the shortest possible cylinder distances * These are known, as the sum of the required head length, the lower bore length and the dimensions of the two crankshafts. Therefore, in order not to "waste" any of the machine, it is required that the side walls at the bottom of the crank shaft move as close together as possible.

in DK 159575 B

2

The object of the invention is, therefore, to simplify the overall construction of a guide rail support outside the first, that an unacceptable deformation of the inner walls must be included in the purchase or, secondly, that the machine length must be increased. According to the invention, this task is solved by the side walls supporting in pairs an inner wall extending inclined downwards and upwards towards the inner wall ends.

As is well known, the normal forces on the sliding webs and thus on the inner walls are greatest in the vicinity of the upper dead point of the piston movement. In the design of the sidewalls according to the invention, a relatively wide box formed by the inner wall, outer wall and the two side walls is formed in this area. In the region at the top dead center, the inner walls are supported at their free ends by the side walls, so that their deformat ions can be kept within narrow limits. 20 In the following, the invention is explained in more detail by means of an exemplary embodiment in connection with the drawing, schematically in section II from FIG. Fig. 2 is a sectional view of a single stand for a diesel engine; Fig. 2 is a sectional view II-II of Fig. 1 showing a basic view of two neighboring stands in the engine with the intersecting head, while Fig. 3 is sectioned III-III of Figs. , 2,

DK 159575 B

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The stand known in its construction, which has arisen, for example, by welding steel plates, has bottom plates 2, which together with inclined outer walls 3 and 5 vertical inner walls 4 form two trapezoidal frames.

These are connected to each other by a common cover plate 5. Between the outer walls 3 and the inner walls 4 there are trapezoidal frames filled with side walls 6. Between these extend wooden anchors 7 (Fig. 2), by means of which the stand is held together with the bottom frame 1 and that of the motor. cylinder bar not shown under bias.

In one of the upper and lower half of the bearing bowl 14, over which a bearing cover 15 15 is placed, the crank 16 is mounted in the bottom frame 1.

As seen in FIG. 3, the machine length required for a cylinder is composed essentially of on both sides a half length h / 2 of the main bearing 14, 20 the length S of the lower bearing for the thrust bar 20, as well as the thickness d of the two crankshafts 17. As referred to it must cylinder required engine length m be as small as possible.

In the middle part between the inner wall 4, the side walls 6 are replaced by a middle wall 8, which at its underside is terminated by a transverse carrier 9. As seen in FIG. 2, the inner walls 4 of the stand with their facing faces form slides for a cross head pin 11 in idle 10, which is known in a known way with the piston rod 12 and enclosed in its bearing housing 13.

According to the invention, the side walls 6 below one

DK 159575B

4 smaller distances from each other, which just adds to the passage of the wooden anchor 7. They are inclined and extend upwardly from each other so that they support the inner walls 4 in the region of the piston movement's top 5 dead point - in fig. 1 and 3 roughly reproduced at the cross-head position - near the free ends of the inner walls 4. Thus, the walls 3, 4 and 6 in this area form a relatively wide and rigid "box" without the motor length m being increased for that reason.

In the space between the sidewalls 6, the "box" of sidewall 6, outer wall 3 and inner wall 4 is reinforced by spacing walls 19, to increase the stiffness of the sidewall with the relatively large area in the high load area.

Claims (1)

DK 159575 B Stands with a support for the cross-head sliding tracks on piston machines * whereby the stand has inclined outer walls and vertical inner walls, which are connected to side walls, 10 between the bottom and cover plates, which extend over the entire height, whereby further the inner walls over part of their height on their facing faces exhibits sliding paths through which normal forces are transferred from the crosshead pin to the stand, characterized in that the 15 side walls (6) supporting in pairs an inner wall (4) extend obliquely downwards and upwards in the direction towards the ends of the inner walls *