Mechanical steering transmissions

Purely mechanical steering transmission means a steering transmission in which the steering forces are transmitted entirely by mechanical means;

The main natural route of infection of pigs in Europe is oro-nasal by direct or indirect contact with nfected pigs or by feeding of virus-contaminated feed. However, in those areas where vectors exist, transmission via these vectors plays a very important role in virus persistence and spread. ASF may also spread via indirect contact with contaminated materials and via biting insects which mechanically transport the ASF virus. Disease transmission may also occur via semen of infected boars.

Hybrid mechanical steering transmission means a steering transmission where a part of the steering forces is transmitted by purely mechanical means and the other parts either by:

In the case of inertia brakes with mechanical transmission:

in the case of inertia brakes with mechanical transmission:

In the case of mechanical-transmission inertia brakes, the following shall be determined:

Symbols for mechanical transmission brakes (see diagram in Appendix 1, p. 774)

Determination of the correction factor for mechanical efficiency of the transmission á2

Determination of the correction factor for mechanical efficiency of the transmission 2

The transmission may be mechanical, hydraulic, pneumatic, electrical, or mixed.

Any failure in transmission other than purely mechanical shall clearly be brought to the attention of the vehicle driver;

For this reason, and to reduce the risk of HIV transmission, barrier contraception (e. g., condoms) is recommended.

The above provisions apply to the latest models of inertia brakes with mechanical or hydraulic transmission;

The first part of the brake is either the lever actuating the brake cam or similar parts (mechanical-transmission inertia brake) or the brake cylinder (hydraulic-transmission inertia brake).

the braking moment M as a function of the force P applied to the control lever in the case of devices with mechanical transmission, and of the pressure p in the brake cylinder in the case of devices with hydraulic transmission.

Item 3.3 shall apply mutatis mutandis if the inertia braking device with mechanical transmission is fitted with a stress reducer.

In the case of inertia brakes with mechanical transmission, a check shall be made as to whether the rod system by which the forces are transmitted from the control device is correctly fitted.

In either case, where the mechanical part of the transmission is designed only to give position feedback and is too weak to transmit the total sum of the steering forces, this system shall be considered to be purely hydraulic, respectively purely electric, or purely pneumatic steering transmission;

transfer of physical loads between the vehicle and the infrastructure, in the three directions - lateral, vertical and longitudinal - whether through the wheel-rail contact or via braking systems aboard the vehicles, which do not use wheel adhesion,

Combination of steering transmissions A combination of mechanical, hydraulic and electric transmissions shall comply with the requirements specified in items 2.1.1, 2.1.2 and 2.1.3 above.

Inertia braking devices with mechanical transmission without a stress reducer must be arranged in such a way that, in the case where the coupling head travels to its fullest extent, no part of the transmission becomes jammed, or suffers any permanent distortion, or fails.

Steering transmission which can be disconnected to cover different configurations of a vehicle (e.g. on extendible trailers), must have locking devices which ensure positive relocation of components;

Where it is necessary to use hydraulic fluids (fluids for the transmission of hydrostatic and/or hydrokinetic mechanical energy), fluids which are difficult to ignite must, as far as possible, be used in order to avoid the risk of fire and its spread.

equipment for the mechanical or computerized production of braille and recorded material, such as stereo-typing machines, electronic braille, transfer and pressing machines; braille computer terminals and displays;

The factors by which the observed torque and power are to be multiplied in order to determine the engine torque and power under the reference atmospheric conditions specified in 4.2 and the mechanical efficiency of the transmission as specified in 4.5.

transmission and control (sketch) (construction, adjustment, lever ratios, accessibility of control and its position, ratchet controls in the case of mechanical transmission, characteristics of the main parts of the linkage, cylinders and control pistons, brake cylinders).

transmission and control (attach diagram) (construction, adjustment, lever rations, accessibility of control and its position, ratchet controls in the case of mechanical transmission, characteristics of the main parts of the transmission, control cylinders and pistons, brake cylinders).

For the purposes of this Directive the steered wheels, the steering control and all mechanical parts of the steering transmission shall not be regarded as liable to breakage if they are amply dimensioned, are readily accessible for maintenance, and exhibit safety features at least equal to those prescribed for other essential components (such as the braking system) of the vehicle.