CS241444B1 - Resilient connecting rod coupling between hollow shaft and traction rail vehicle - Google Patents

Abstract

The solution relates to a flexible connecting rod coupling between a hollow shaft and a wheel of a traction rail vehicle. The essence is that the connection of the connecting rods (5), connecting the drive (4) of the drive shaft (3) with the wheel (2), is carried out by a flexible member (6), located centrally around the axle (1). It is advantageous for the flexible member (6) to be flexible in the part surrounding the axle, or for the flexible member (6) to be flexible in the part where the connecting rods (5) are attached.

Description

The invention relates to a flexible connecting rod coupling between a hollow shaft and a traction vehicle wheel, where a hollow shaft is used to transfer torque from the engine or gearbox to the wheelset. It is particularly suitable for vehicles powered by an asynchronous traction engine where considerable emphasis is placed on tangential drive suspension due to pulsing motor torque *

Hitherto known hollow shaft drive designs use a connecting rod plane mechanism that is quite stiff in the tangential direction. · Required softening in the tangential direction can be achieved by a tangentially sprung gear rim, which is structurally complex, heavy and therefore underused. depending on the direction of travel, tensile or compressive / do not meet the requirement of tangential clutch suspension ·

Another known embodiment, which is now largely outdated, uses two connecting rods interconnected via angular levers. The contact of the ends of the angle levers is solved by gearing, which suffers considerably in the dirty environment of the locomotive. The coupling is stiff in the tangential direction and therefore disadvantageous ·

The cross-clutch drive design uses a ring with four pins arranged 90 * on the circumference, two of which extend into the guide located on the wheel and the other two into the guide on the hollow shaft carrier. The pins move axially in the guide, which is very disadvantageous.

A combination of connecting rod and cross coupling is also used, which has the disadvantages of both types of couplings, i.e. structural complexity and high rigidity in the circumferential direction.

Another seemingly simple, but no longer used version of the hollow shaft drive has a carrier with arms extending directly between the spokes of the wheel. A considerable disadvantage is the great wear of the ends of the arms transmitting the traction force of the vehicle at the same time the relative displacement between the arms and the spokes of the wheel, since the wheel is. it moves vertically due to the initial suspension.

The above drawbacks are overcome by the flexible connecting link between the hollow shaft and the wheel of the traction rail vehicle according to the invention, which is based on the fact that the coupling of the connecting rods connecting the drive shaft carrier to the wheel is effected by a flexible member positioned centrally around the axle. Preferably, the resilient member is resilient in the axle-engaging portion and the connecting rod retaining portion.

An exemplary embodiment of a flexible coupling according to the invention is shown in the accompanying drawings, wherein FIG. 1 shows a view of a vehicle wheel; FIG. 2 shows a section along line AA; FIG. 3 shows section BB; FIG. 4 shows section CC; 6 shows the deformation under the tensile forces in the connecting rods.

The flexible connecting rod in the wheel (FIG. 1) consists essentially of a carrier 6 (FIG. 2), four connecting rods J (FIG. 1), a resilient member 6 and a wheel 2. The carrier 6 (FIG. 2) is connected to the hollow. In the carrier 6, two carrier pins 10 are pressed into which they are fitted by means of a rubber-liner 13 of the connecting rod J fixed by nuts 16. The other end of the connecting-rods J is coupled to a resilient member 6 using pins 12 of the rubber-metal bushings 13 and nuts 16. (Fig. 4). Further connecting rods J from the second lugs of the elastic member 6 make a connection to the wheel studs 11 whose opposite end is pressed into the wheel 2 (FIG. 3). The resilient member 6 (FIGS. 5 and 6) is made of a resilient material, for example by forging, machining and refining the spring steel to the shape shown in the figures so that it deforms under the influence of forces. Under compressive forces P (FIG. 5), an increase in the mesh distance occurs due to deformation of the resilient member 6, while the central member of the resilient member 20 is deformed. The larger mesh distance is reduced due to the deformation of the center 20 of the elastic member 6. The deformation of the elastic member 6, located centrally around the axle 1, occurs under both tensile and compressive forces in the connecting rods. of the carrier 6 relative to the wheel 2.

In particular, the invention can be used in traction vehicles using a hollow shaft drive axle to which it is laid

241 444 »3 - requirement for torsional compliance of the drive, as is the case, for example, with asynchronous traction motors.

Claims (3)

SUBJECT OF THE INVENTION 1. A flexible connecting link between a hollow shaft and a traction vehicle wheel characterized in that the coupling of the connecting rods (5) connecting the carrier (4) of the drive shaft (3) to the wheel (2) is provided by a flexible member (6) positioned centrally around the axle. (1). 2. Flexible coupling according to claim 1, characterized in that the elastic member (6) is resilient in the axle-extending portion. 3. Flexible coupling according to claim 1, characterized in that the flexible member (6) is resilient in the connecting portion of the connecting rods (5).