DE699195C - n powered axles - Google Patents

Description

GERMAN EMPIRE

ISSUED ON
25 NOVEMBER 1940

. REICH PATENT OFFICE

PATENT LETTERING

CLASS 20Γ GROUP

Ä 85424 VIIIdl201. -

WalteF Kleinow in Hennigsdorf, Osthavelland, and Ernst Knipping in Berlin-Reinickendorf

have been named as inventors.

Patented in the German Empire on January 8, 1938 Patent issued October 24, 1940

The invention relates to an axle pressure compensation in locomotives with individually motors driven by paw bearings, six of which are individually driven by paw bearing motors driven axles are provided, which are arranged in two pieces in a bogie are. It is known that electric locomotives, on the hook of which a pulling force is exercised, experience a load shift in such a way that the front axles are relieved, the rear axles are loaded. If the axles are individually driven by motors, the most relieved axle is decisive for the amount of tensile force, which can be exercised; because at her first the limit of adhesion between wheel and Rail exceeded so that skidding occurs.

One therefore seeks arrangements in which the relief assumes a minimum value. If the axles are driven by cradle bearing motors, some of which are on the axle, i.e. an unsprung part If the part is supported on the frame, ie a spring-loaded part, there is also another one Force shift in the spring loads, which is highly undesirable, and it arises the second task, also this change in the spring loads to a minimum value bring.

Locomotives with six axles that travel through very curvilinear routes are preferred with three coupled frames executed, which each have two axes. The object of the invention is specify the arrangement in which both for the relief of the axles and a minimum value is reached for the load on the springs. According to the Invention this is achieved in that in the outer frames, both motors according to the In the middle of the locomotive are arranged, while both engines are in the middle frame to hang outwards, the springs of the axles on the outer frames by compensating levers are connected to each other, two adjacent frames through each other a joint are connected, which transmits perpendicular forces, and the sum of Wheelbase and double overhang up to the joint on the outer frames is the same the sum of the wheelbase and four times the overhang up to the joint on the center frame. This achieves a minimum of axle relief and spring loading, in such a way that the first, second and fourth axes, whose motors hang to the left, equally relieved, while the other three axes are equally loaded. An exemplary embodiment according to the invention is shown in the drawing.

Fig. Ι shows a locomotive with six Axles driven individually by cradle bearing motors, each of which is two in one Bogie are arranged.

Figs. 2 to 4 serve to prove that both in the case of the arrangement according to the invention for relieving or loading the axles than for loading or unloading the springs a minimum value is reached.

·. Numerous possibilities are conceivable for the arrangement of the motors. So in each frame, the two motors, as is usually the case, arranged in the middle of the frame will. But it is also possible to hang both motors on the outside. It would also be possible to use both engines after one Direction to arrange, and finally it is conceivable between all these possibilities to carry out any combination of any frame.

Fig. Ι shows the arrangement according to the invention, in which the motors of the outer frames are arranged towards the middle of the locomotive, while the motors of the middle frame are turned away from the middle of the locomotive. Fig. 2 shows a pin bearing motor arranged on the left side of the axle. The balance of forces is as follows: If the axle moves to the right while exerting a tensile force Z, a pull F arises on the suspension. The axle is additionally loaded by a force IV ", which comes from the tooth pressure and the load on the cradle bearing. The drive axle spring is relieved the amount X, so that the relationships exist

~ ZA

2 e
N - F - X

The size of the force X can be largely influenced by the joints, the position of the motors and the geometrical dimensions for the wheelbase and overhang. The following conditions apply to the arrangement to be protected:

a) Front frame (see Fig. 3) 2 Z (h - dJ2) + 2 X - \ a + bJ2) '

= F (a - e + α + b - e)

Z- (2h -d) + X- (2a + b)

. = F- (2.0-4- b - 2 e)

For abbreviation we denote: 2 h - d = u 2 a + b - 2 e = s

₂ a + b = t

and write

. : Z'.u + Xt = Fs

F · s -Z-u

- "~ 1

The additional force X going into the springs is a minimum in the chosen arrangement, since the numerator shows the difference between two quantities and the dimension s is smaller than in any other arrangement.

Joint pressure P = 2 F - 2 X.

The relief of axis 1 and 2 is N ₁₁₂ = FX.

b) Rear frame

Is the rear frame the mirror image of the front frame and are the intermediate couplings at the same height from the top of the rail as the tow hook of the locomotive, so ito all forces have the same magnitude, only with the opposite sign.

c) Middle frame (see Fig. 4)

2 Z (h - djz) + F (e + I + e) '' 5

-P- (I + 2C) + A-I

Z- (zh - d) + F- (l + 2i)

= P- (I + ze) + A-I

Z - u + F - (I + 2 e) - P - (I + 2 c)

The value B has the same size, only with the opposite sign. Axis 3 is additionally loaded with

■ - N ₃ = FA ₁ the fourth axis is additionally relieved by The best value, ie the lowest relief of all, is achieved if

become the same size or

X = A X-I = Z.u + F * (I + ze) - (2F- 2X) - (l +

F - (I + 4 c) - 2Fe- Z -u = X- (I + 4 c) F. (I + ec) -2F- e -ZU = X- (I + Ac)

4-c =

t - s = 2e

t - (2F- e + Z-u) F-t - F-s + Z-u

t - (2 F - e + Z - u) F · (t χ s) + Z ■ u

4c -t = 20+ b.

So there must be a simple relationship between the wheelbases and the overhangs of the racks exist

example

α = 2.5 m
0 = 3.4 in
2 a + b = 8.4 m

Axle pressure 25 t

Z = 7500 kg per axis

e = 1.0 m

i = i, in the wheel diameter h = i, oS, m.

C = 1.4 m / = 2.8 m I + 4c =. 8.4 m

It will

X = A = 2250 kg. .

N ₁ = N ₂ = Ni relief = 1880 kg - N ₃ = Ng = N ₆ load = 1880 kg joint pressure P = 3760 kg:

So if the locomotive exerts a pulling force of 6 »7500 - 45,000 kg on the hook, then the individual axes only around 1880 kg = 7.5% the resting axle pressure is loaded or relieved. The additional spring forces are 2250kg.

Claims (1)

Claim: . Locomotive with six axles individually driven by Tatz-ktger motors, two of which are in a bogie ^; -arranged, characterized in that the motors -the outer frames are arranged to locomotive center, while the motors of the middle Ge. steeply facing away from the center of the locomotive, the springs of the axles on the outer frames are connected to each other by compensating levers, two adjacent frames are connected to each other by a joint that transmits vertical forces, and the sum of the wheelbase (b) and double overhang (2s) up to the joint on the outer frames is the same as the sum of the wheelbase (I) and four times the overhang (4c) up to the joint on the center frame (b + 2a = l + 4c). 1 sheet of drawings