DE1933567B2 - CHASSIS, IN PARTICULAR RAIL SWIVEL - Google Patents

Description

3 4

with its underside a stop 16 for the bearing- In Fig. 4 is with the flat Bogenünie i? o d <e

body 10. weak curvature of the leaf spring 3 at uubelade-

The pin 15 is indicated below the lower nem vehicle. The strongly curved console 13 continues in a bolt 17, which by means of a line B _x illustrates how the screwed-on nut 18 carries a spring plate 19 5 spring 3 with complete relief when the sinking of the on this is supported by the additional spring wheel 22 around the Dimension i would bend if the forming helical spring 20, for which the lower additional spring 20 would not be effective. But since console J.3 on its underside, the abutment 21 by the additional helical spring 20 forms the end 7 of the leaf spring 3 xzn the dimension 2 / pulled to uaten

In the spring diagram according to FIG. 5 are as ab io, there is a in the middle of the leaf spring

szissen the spring forces and, as ordinates, the spring reduction in curvature B _x by the amount /. the

paths applied. The relatively steep characteristic correspondingly small curvature of the leaf spring 3 is

The line of the leaf spring 3 is marked with K ₃ and the spring characteristic is marked with the curved line B /

line of the additional helical spring 20 with K ₂₀ As can be seen from FIG. 5, this is the case

15 denotes a state of equilibrium when the force P ₂ o>

In the illustration according to FIGS. 3 and 4, the additional helical spring 20 according to FIG

assume that the vehicle to which the chassis reaches characteristic curve K ^ o if it is around the dimension /

heard, is unloaded. The corresponding, proportionately extended, is equal to the force P ₃ , which according to the

moderately low load on the leaf spring 3 is shown in FIG. 5 characteristic curve K ₃ in the leaf spring 3 is reached when

denoted by Fo. Under this load, the relaxation caused by the lowering dimension t is the

Leaf spring3 slightly curved upwards If leaf spring3 is by the amount / by the influence of

the vehicle is fully loaded, the load spring 20 is reversed. After that, the

the leaf spring 3 on the in Fi g. 5 with F _L denote additional helical spring 20 that the leaf spring 3

th value Because of the steepness, this corresponds to that also when the wheel 22 drops by the amount / below

Spring characteristic X3 is only a relatively smaller than the considerable tension force P ₃ , which is sufficient to

Spring travel s and a flattening of the leaf spring 3. to prevent derailment of the unloaded vehicle.

It is also assumed that the coil spring 20 Die F i g. 6 and 7 illustrate the case that

has a bias voltage V which is smaller than F ₀ , so that the additional spring, which is also here by a

The coil spring 20 is also formed in the unloaded state of the vehicle, in unloaded

Bearing body 10 with a force E, which is equal to the 30 state of the vehicle, the total on the two

Difference between F ₀ and V, transfers the portion of the load to the stop 16 spring ends 7,

is pressed. When the vehicle is loaded, however, the nut 18 is on the bolt 17

the pressure increases at the stop 16 on the screwed upwards, so that the bearing body 10 of

Value El- dem stop 16 is deducted downwards and the

If, when the vehicle is unloaded, the wheel 22 located under the pretension of the additional helical spring 20 at leaf spring 3 is increased _{to the value F 0, for example when the vehicle is unloaded.} If the vehicle is being loaded, the leaf spring 3 rises due to its steep characteristic curve K _3, the additional helical spring 20 would be overburdened. In Fig. 4 is for the sake of clarity the value F ₀ until the bearing body 10 is shown against an exaggeratedly large drop t . Ge 40 abutment 16 lays. From then on, the preload remains F i g. 5 it is assumed that the lowering t voltage F ₀ 'of the helical spring 20 is constant, while it is even greater than the spring travel J ₀ by which the tension of the leaf-leaf spring 3 is tensioned with increasing load to the tension F ₀ at spring 3 to reach the unloaded * vehicle according to the characteristic curve K3. The value Fl rises, with the force with which end point T of the lowering before the 0 point of 45 the bracket 12 acts on the bearing body 10, up to characteristic curve K ₃ , that is, the leaf spring 3 would be completely the El value increased.

relaxed so that they do not have any force on the wheel axle when the wheel 22 is around when the vehicle is unladen

would exercise more and therefore the risk of ent- the degree / decrease it would without the additional

the track would exist. Coil spring 20 to a complete relief of the

This risk is avoided by the fact that 50 leaf springs 3 come when the end point T of the lowering, after a certain drop in the wheel 22, the lowering lies before the 0 point of the spring characteristic K _{3, the} flatter characteristic K ₂ Q of the additional helicals. Thanks to the flatter characteristic curve K _in ', the additional spring 20 is decisive. If, namely, the tension spring 20 arises but an equilibrium of the leaf spring 3 falls below the value V , a state of expansion in which the tension P ₂ o 'of the spring 20 is equal to the tension as the wheel 22 continues to fall P ₃ ', according to the characteristic helical spring 20, so that the bearing body 10 line K _{3 reaches} the leaf spring 3 when it is pulled down by the stop 16 and the relaxation around the end 7 of the leaf spring 3 caused by the lowering t as far as pulled downwards measure / 'is reversed, by which it becomes that the tensions of the springs 20 and 3 additional spring 20 has expanded. Again, keep your balance. It is assumed that when the wheel 22 sinks below this, this happens when the additional screw unloaded vehicle has expanded the leaf spring 3 under a spring 20 by the distance /. Since the considerable tension, so that derailments ver one end of the compensation lever 9, at which the are avoided.

Schake 8 engages the next leaf spring 3, on which the two-axle bogie according to Fig .:

Movement of the bearing body 10 downwards not 65 and 8 are the two ends facing each other '

participates, the other end of the Aus der move one behind the other on one side of the vehicle

equal lever 9 and thus the end 7 of the leaf spring 3 Neten leaf springs 3 not by compensation

by the distance 2 /. levers connected to each other. Rather, dii

5 6

Schaken 8 at the ends of a yoke 23, which, as indicated in Fig. 8 with dot-dash lines, the bogie frame 2 in the vertical direction. The wheel 22 is guided opposite the andeschiebbar. This guidance takes place by means of a wheel lowered by the amount t. The dementsprezweier pegs 24 and 25. the relaxation of the associated leaf spring 3 23 project upwards or downwards and in bores 5 but is partially reversed that conditions of consoles 26 and 27 on the Frame 2 the end 7 of this spring slide relative to the bogie, frame 2 is raised by the amount 2 u , what

The additional spring is in this case by lifting the center of the leaf spring 3 relative to

a pretensioned helical spring 28 is formed which corresponds to the bogie frame 2 by the dimension u ,

is supported on the one hand on the top of the yoke 23 xo The additional helical spring 28 is

and for the other hand, the above the yoke 23 lift the yoke 23 up to the stops 29 together.

located console 26 forms the abutment. Pressed on so that their preload increases. this

this console 26 are located on both sides, which acts once in an increase in tension

Coil spring 28 stops 29 in FIG. 8 leaf spring 3 shown on the right

In the representation with solid lines is 15 and on the other hand that the relaxation of the assumed that the vehicle is unloaded. Here leaf spring 3 of the lowered wheel 22 is so far entbei located between the stops 29 and which is counteracted that the risk of derailment on the top of the yoke 23 game. The additional screw is lifted. The wheel 22 diagonally opposite spring 28 also has a preload at such a level, lying wheel that, if the wheel 22 drops that it would also greatly relieve the load on the two leaf springs 3, is due to the proportion of the vehicle load from the Console 26 setting of the yoke 23 indicated on dash-dotted lines. This forms at its ends the bogie under the tension required to prevent derailment, the fixed points facing each other for the ends 7,
the leaf springs 3. The adjustability of the additional spring 20, the

If the wheel 22 to 25 shown on the left in FIG. 8 in the exemplary embodiments according to FIGS. 3 and 6

follow a rail bump drops, results with the help of the nut 18 takes place, brings the other

the state indicated by dash-dotted lines Advantage that the spring characteristic corresponds to the respective

of the bogie. The bogie frame 2 lowers may be adapted, especially when

to the extent «what in Fig. 8 by raising the transition from empty travel to travel with loaded

Upper edge of the rail is indicated by the dimension u. 30 vehicle and vice versa.

This dimension u is about half the size of the game For the essence of the invention, it is irrelevant between the stops 29 and the yoke 23. The tion in which the suspension springs 3 for the driving game disappears by the yoke 23 against the tools and the additional springs 3 and 28 from stops 29 puts. Since, accordingly, they are fed to one another. Ej steel, rubber, gas-facing ends 7 of the leaf springs 3 can be raised by about 2 u or liquid springs in known designs, if the leaf springs 3 are used at an angle.

For this purpose 2 sheets of drawings

Claims (3)

known rail bogies (Austrian patent claims: patent specifications 227 101. 232 879: British patent specification 420 641) two on each side of the vehicle 1. Chassis, in particular suspension springs for two wheel sets located on rotating rails by a frame, with at least two wheel sets, in which 5 common support members are connected to one another,
On the other hand, the object of the invention, which is characterized by a common support member, is to be connected to each other, characterized by simple means, the disadvantage mentioned that the common support member (9, to avoid) is based on the invention "and in particular a. derailment of 23) on the chassis frame (2) in the height direction unloaded rail vehicles with hard support movably guided and by an additional springs when driving over rail joints, cross-shaped, pretensioned spring (20, 28) that beat or the like. It is intended to support the safety of the chassis without significant additional effort against an abutment (21, 26) of the chassis, and to act so that it is considerably increased during operation. when a vehicle wheel (22) 15 is lowered, this task is achieved with a chassis provides an additional spring travel, during the type described above in that the at least in the loaded state of the vehicle common support member on the chassis frame in the a bearing body (10) of the support member movably guided over the height direction and from a feed winding of the preload of the additional spring additional, preloaded spring, which is against a (20, 28) on a stop (16, 29) of the Fahr- ao abutment of the chassis frame is supported in such a way the frame. is applied that when a lowering of a 2. Chassis according to claim 1, characterized in that the vehicle wheel has an additional spring travel, that in the training of the means, while at least in the loaded state of the seed support member as a compensating lever (9) whose vehicle a bearing body of the support member under Bearing body (10) between the stop (16) as overcoming the bias of the additional and one below this on the chassis spring at a stop on the chassis frame frame attached bracket (13) rests in a vertical position. Direction is slidably guided and one to In the drawings, two execution sub the console-reaching extension (17) carries, examples of the subject invention shown; it on the height adjustable a spring plate (19) for 30 shows the additional spring (20) is attached for Fig. 1 and 2 rail bogies according to the which the console forms the abutment (21). two exemplary embodiments in side view, 3. Chassis according to claim 1, characterized in Fig. 3 a part of the rail bogie indicates that the common support member from F i g. 1 with a wheel set in side view and part one on the chassis frame (2) in a vertical 35 way in a vertical section, Direction of displaceably guided yoke (23) for F i g. 4 one of the F i g. 3 corresponding scheme for two suspension springs (3), on which the additional explanation of the mode of operation, borrowed spring (28) with adjustable bias Fig. 5 is a spring diagram for the execution works. according to Fig. 3, 40 Fig. 6 one of the F i g. 3 corresponding illustration for a different setting of the additional spring, FIG. 7 a to F i g. 6 associated spring diagram The invention relates to a chassis, in particular and their rail bogie, with at least two wheel F i g. 8 the rail bogie according to FIG. 2 in Sentences in which two on a vehicle side 45 side view with an illustration of the suspension springs located by a common support mode of action. link are connected to each other. The rail bogie according to FIG. 1 and 3 has The suspension springs of heavy-duty vehicles, in particular four wheel sets, on whose bearings 1 the rotating special of bogies with heavy rail chassis frames 2 on each side with a leaf spring 3 witness, usually have, as they support the great 50. Two leaf loads arranged one behind the other through the loaded vehicle and additional feathers 3 are facing away from each other for the ends 4 caused by the road or rail by hooks S with impact loads on the frame 2 must be designed, a steep solid spring brackets 6 connected, which fixed-spring characteristic, that means making big changes to the points. At the ends 7 facing one another Spring loading are relatively small 55 of these two leaf springs 3 attack hooks 8, which Spring travel connected. As a result, it remains when operating at the ends of a compensating lever 9 in an articulated manner Suspension springs are slightly tightened when the vehicle is unloaded. This is in a bearing body 10 with are loaded, only a small amount of deflection a horizontal bolt 11 mounted so that he left over. This is used up very quickly if an opening in the bearing body 10 Vehicle wheel drives through any depression, e.g. B. perform a 60 pivoting movements around the bolt 11 Wheel of a rail vehicle over a rail can. push or the bogie by a regular lay. The bearing body 10 is between two consoles 12 runs. Then the one acting on the wheel axle and 13, the one on the bogie frame 2 at a distance, sinks The restoring force of the spring suddenly decreases very strongly, arranged one above the other, in a vertical direction whereby the vehicle can be endangered; 63 slidably guided. This is done with the help of two in particular, there is no longer any longer protruding up and down from the bearing body 10 in the case of rail vehicles. the necessary security against derailment. the pin 14 or 15, which is in the bores of the con This danger is not eliminated by the fact that solen 12 or 13 slide. The upper bracket 12 forms