Justification of the layout solution for placement of cryogenic fuel tanks on the deck of the dump truck BelAZ-75131. Static calculation

One of the key elements of the cryogenic on-board fuel system (OBFS) of the BelAZ 75131 series gas-diesel dump truck is the cryogenic fuel tank (CFT), designed to store the necessary stock of engine fuel - liquefied natural gas (LNG) - on board the dump truck. The CFT has capacious dimensions and weight, which is caused by rather high consumption of motor fuel by BelAZ-75131 dump trucks with payload up to 130 tons. For modernization of serially produced BelAZ 75131 series dump trucks with the purpose of their further operation in gas-diesel (dual-fuel) mode, the key task was rational and technological placement of CFT on its board. On the basis of the conducted analysis, as well as taking into account the revealed shortcomings and aggregate comparison of a number of key factors (structural, technological, ergonomic, economic), it has been established that the most rational place of CFT placement is the deck of the dump truck when developing layout solutions for modernization of serially produced BelAZ 75131 series dump trucks. The results of the research of the stress-strain state of the modernized deck of the BelAZ-75131 gas-diesel dump truck have shown that the conditions of its operation (including the angles of inclination of technological routes) practically do not affect the stress-strain state of the bearing elements of the deck. Placement of the additional equipment on the deck of the dump truck, namely the frame with the cryogenic fuel tanks fixed in it, did not significantly change the stress-strain state of the deck. The obtained research results allowed to reasonably assert that the design of the modernized deck with the additional equipment (in particular, the CFT) placed on it does not require additional structural modifications and changes.

Abstract licence: CC BY

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