Abstract
The matter of this article is a stress-strain analysis of hybrid drive prototype unit connected directly to convention Concrete Transit Mixer Gearbox. The unite was developed with intention to do field test on existing convection machines with possibility to use existing interfaces. The hybrid drive unit consists from electric and hydrostatic motor connected through addition mechanical transmission gearbox. The question is if today standard interface is good enough or need additional support a “stiffener”. Two engineering design were analysed. The first one includes using the stiffener to fixate the construction of hybrid drive unite connected to the planetary gear. The second one is without the stiffener. For strain-stress analysis, a finite element software ANSYS Workbench was used.
Highlights
In order to test this new technology on existing machines was necessary solved several challenges [1, 2, 3]
The prototype hybrid drive unit for a mixing drum that is disposed on a motor vehicle which, as compared with the prior art, exhibits a further improvement to the efficiency of the drive system of the mixing drum and offering possibility eliminate unnecessary exhaust gas and noise emissions in a particular working arrears as underground and tunnels
In the finite element analysis, only the main part consisted of stiffener, flange, planetary gear cover and sandwich gearbox was considered, Fig. 5
Summary
In order to test this new technology on existing machines was necessary solved several challenges [1, 2, 3]. One of that challenge was do the field test on existing convention solution with possibility to connect hybrid drive unit to the main gearbox where is the same interface as is today for one motor only, Fig. 1. Designers needed to be sure that the stiffness of the subassembly will be stiff enough and from this reason was proposed to use additional support part „stiffener“ see Figure 4.
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