Volvo Articulated Haulers Ab

Volvo Construction Equipment Ab

Karl-Erik Olsson

Method and arrangements for predicting life-affecting damage on a rotary member subjected to repeated loading during operation. A number of operating parameters are measured, and a temperature increase during each loading is calculated from the operating parameters. More precisely, a total temperature in a part of the rotary member is calculated for each loading by summation of basic temperature of the rotary member before the loading concerned and the temperature increase, and the values for the total temperature are used as a measure of the damage. The part of the rotary member for which the total temperature is calculated defines a surface that is acted on when the rotary member is loaded. Two sets of predetermined functions (M, N), which each comprise at least one function, are used for temperature-increase calculation, and the set which is used for temperature-increase calculation is selected depending on at least the nature of the rotary member.

Method for assessing life-affecting damage on a rotary member

Transmission method and arrangement for distributing tractive force in a vehicle between a first transmission branch () and a second transmission branch (). The transmission branches are connected to one another by way of a fork () and one transmission branch () is directly connectable to at least one wheel contact surface. The second transmission branch () is connected to the fork () by way of a control unit (), which is provided with control means () for varying the transmission ratio in this branch (). The invention furthermore relates to a vehicle having at least two driving wheels () and the transmission arrangement specified above.

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Lönsboda, Sweden

Karl-Erik Olsson