Structural Parameters and Working Range Estimation of Excavator Backhoe Mechanism
J Subba Raju1, Basavaraju S2

1J Subba Raju, R&D Division, KGF Complex, BEML LIMITED, KGF, (Karnataka), India.
2Basavaraju S, R&D Division, KGF Complex, BEML LIMITED, KGF, (Karnataka), India.
Manuscript received on 21 September 2019 | Revised Manuscript received on 06 October 2019 | Manuscript Published on 11 October 2019 | PP: 867-872 | Volume-8 Issue-2S10 September 2019 | Retrieval Number: B11590982S1019/2019©BEIESP | DOI: 10.35940/ijrte.B1159.0982S1019
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Abstract: Earthmoving machines like excavators and loaders characteristics such as productivity, weight, reliability depend on their backhoe mechanism. For that, the backhoe mechanism has to deliver the desired working range, digging forces and stability which are dependent on structural parameters like components length and joint angles. This paper describes the method of developing a backhoe mechanism for the desired working range which constitutes cutting heights and reaches by using structural parameters. This requires to develop forward kinematical model by considering the backhoe mechanism as a mechanical manipulator. A computer algorithm was developed, that uses the forward kinematic model, to estimate the working range. Also, a relationship is established between joint angles and cylinder lengths. Results of Virtual prototype, modeled and simulated in MSC ADAMS along with the testing results of BEML designed Physical prototype were used to validate the working range and structural parameters. This research provides a solid foundation for analyzing the effect of structural parameters on digging forces and stability.
Keywords: Earthmoving Machine, Backhoe Mechanism, Structural Parameters, Working Range.
Scope of the Article: Structural Engineering