DE554095C - Spring-loaded pulling and pushing device - Google Patents

Description

GERMAN EMPIRE

ISSUED ON
JULY 4, 1932

REICH PATENT OFFICE

PATENT LETTERING

M 554095 CLASS 2Oe GROUP

Fried. Krupp Akt.-Ges. in Essen, Ruhr *) Spring-loaded pulling and pushing device

Patented in the German Empire on May 1, 1931

The invention relates to resilient pulling and pushing devices with two pulling and bumpers and aims to provide a device of this type which, in the first place Line has very high resistance to buckling.

Show on the drawing

Fig. Ι an embodiment of the object of the invention in horizontal longitudinal section,

ίο Fig. 2 a section according to 2-2 of Fig. 1, seen from the left, and

Fig. 3 a section according to 3-3 of Fig. 1, also seen from the left,

Fig. 4 shows another embodiment corresponding in _strength of one of the Fig. 1 representation,

Fig. 5 and 6 Sections according to 5-5 and 6-6 of Fig. 4, viewed from the left,

Fig. 7 shows a third embodiment in axial section and

ao Figs. 8 and 9 sections after 8-8 and 9-9 of Fig. 7, both seen from the left.

In the exemplary embodiment according to FIGS. 1 to 3, the device has two pull and push rods A and B, which are slidably mounted in bearings, not shown, connected to the longitudinal beams C of the vehicle undercarriage. Central buffer couplings (not shown) are attached to the ends of the rods ^ and B protruding from the vehicle. The rod B carries a tubular extension b ¹ provided with openings b ² , in which the rod A can be moved. The rod A has parts a ¹ of smaller diameter than the rod, so that collars a ² , a ^s and α ⁴ arise, the length of which in. A certain ratio to the mutual distances of the recesses b ^{2 of} the tubular part b ^{1 of} the rod B stands. On the parts α ^{1 of} the rod ^ spring plates D, D \ E, E ¹ and F, F ¹ welded together from two halves are displaceable, which with lugs d ² , e ² and f ² through the recesses b ^{2 of} the tubular part b ^{1 of} the rod B reach through. Between the spring plates D, D ¹ , two helical springs H and H ¹ , wound in opposite directions, are switched on, one end of which is supported against the associated plate D or D ¹ and the other end of which is supported against a stop c ^{2 attached to the carrier C.} In the same way, springs K and K ^{1 are} provided between the plates F, F ^1. Under the pressure of the springs H, H ¹ and K, K ¹ , the plates D, D ¹ and F, F ¹ rest against the collars of the rod A when the device is unloaded. The arrangement is such that the plates D, D ¹ and F, F ^{1 are supported} simultaneously against the edges of the recesses b ^{2 of} the rod B immediately adjacent to the collars and against stops c ^{1 of} the carrier C. This is achieved in that the distance between the stops c ¹ , assuming that the spring plate is flat, is equal to the distance between the

*) The patent seeker stated as the inventor:

Desiderius Weber in Essen,

mentioned edges of the associated cutouts b ^{2 is} selected. An annular spring G is provided between the plates B, E ¹ , which presses the plates E, E ¹ simultaneously against the ends of the associated recesses b ² and against the immediately adjacent collars ar, α ^3. In the path of the plates E, E ¹ , stops c ³ attached to the carriers C are provided, the spacing of which is greater than the distance between the outer surfaces of the plates E and E ¹ .

If one-sided pressure is exerted, for example, on the rod B , the tubular part b ^{1 takes} the spring plates F ¹ , D ¹ and E ¹ with it. Here, the springs K ¹ and H ¹ are initially compressed and transfer their resistance through the stops c ² to the carrier C and thus to the vehicle. The springs H and K remain unloaded. The spring G, which as a ring spring has a considerably greater resistance than the other springs, is initially only slightly compressed and essentially only transmits the pressure of the rod B by means of the plate E to the collar a ^{2 of} the rod ^. As soon as the bar B c a path from the magnitude of the distance of the spring plate E of the belonging to their stop traveled ^3, the plate E inserted against the stop c ^3, so that on further movement of the bar B toward the left, the spring G is primarily stressed, whereby an inadmissible loading of the springs H ¹ and K ^{1 is} avoided. When the rod B is pulled on one side , the springs H and K are essentially first loaded in a manner similar to that described above, until the plate E ¹ hits its stop c ^8. When rod A is subjected to tensile or compressive stress, the processes take place in the same way. If the rods A and B are simultaneously subjected to tension or pressure, the spring plates D, D ¹ and F, F ¹ move out of contact with their stops c ¹ ; the springs H, H ¹ and K, K ¹ are then supported against the stops c ² and, through their resistance, transmit the stresses to the vehicle.

As a result of the guidance of the stalks in the rod B , the device has a considerable resistance to buckling. Another advantage is that the working capacity of the springs H, H ¹ and K, K ^{1 is} fully utilized while maintaining the connection between the device and the carriers C , since all springs are loaded due to the parallel connection of the springs at the beginning of the stroke .

The device can be further simplified in that only one pair of springs H, H ¹ or K, K ¹ is used. Instead of the springs H, H ¹ and K, K ² , a single spring can of course also be used, between the turns of which the associated stop c ² engages.

In the embodiment according to Fig. 4 to 6, between the spring plates E and E ^{1 of} the first embodiment, corresponding spring plates L and L ¹ next to the ring spring M, two oppositely wound helical springs N and N ^{1 are} provided, one end of which is against the plate L or L ¹ and support with their other end against a stop p ^{1 of} the longitudinal beam P of the vehicle. Otherwise, the arrangement corresponds to that of the first exemplary embodiment. The stop p ¹ transmits the stress on the springs N, N ¹ to the vehicle when the two pull rods and bumpers are simultaneously stressed by pulling or pushing.

The third embodiment according to Fig. 7 to 9 differs from the first described in that between> the spring plates R, R ¹ and S, S ¹ next to a strong helical spring T or U, a weaker spring V or W is arranged, which is supported with its one end against the spring plate R or, S * and with its other end against a stop s ^{1 of} the longitudinal beam Z of the vehicle. When the device is subjected to tension or compression, the stress on the spring V or W is correspondingly transferred to the vehicle through one of the plates R or 5 ¹ and one of the stops ^ ^1.

Claims (6)

Patent claims: 1. Spring-loaded pull and push device with two pull and push rods, thereby characterized in that the end of a rod (JS) in the area of all springs (e.g. H, H \ G, K, K ¹ ) is designed as a tube (b ¹ ) serving to guide the other rod (A) and has openings (b ² ) through which the spring plates (e.g. AD ¹ , E, E ¹ and F ₁ F ¹ ) . 2. Apparatus according to claim 1, characterized in that the in the tube (b ¹ ) guided rod (A) collars (e.g. a ² , a ³ ) , their mutual. The distance is so dimensioned that each spring abutment is supported both against an edge of the recesses (b ² ) of the tube (b ¹ ) and against a collar in the unloaded state of the device. 3. Apparatus according to claim 1 and 2, characterized in that between two related spring abutments (e.g. D and D ¹ ) a spring (H, H ¹ ) in front of is seen, which is supported not only against the abutments (D, D ^{1 ) but also against a stop (c 2} ) attached to the vehicle underframe (z. B. C). 4. Apparatus according to claim 1 and 2, characterized in that between two associated spring abutments (L, L ¹ ) two springs (M, N, N ¹ ) are provided, one of which (N, N ¹ ) against both abutments (L, L ¹ ) and against a stop (p ¹ ) attached to the vehicle chassis (P) . 5. Apparatus according to claim 1 and 2, characterized in that between two related abutments (z. B. R, R ¹ ) two springs (z. B. T, V) are provided, one of which (z. B. V) with its one end against one (z. B. R) of the Abutment and at its other end. against a stop (z ¹ ) attached to the vehicle chassis (Z). 6. The device according to claim 1, characterized in that stops (z. B. c ³ ) are provided for the middle (z. B. G) of the springs, the distance from each other is greater than the distance between the corresponding stops (z. B . c ¹ ) for the remaining springs (e.g. H, H ¹ and K, K ¹ ) from each other. 1 sheet of drawings