The Bionic Bucket Teeth And Optimization Of Boom Of Excavator Working Device

With the rapid development of the national economy, vigorously into thestate of infrastructure, as well as in recent years the abnormal hot real estate,construction energy development, and National defense facilities. The mainconstruction equipment of a key component of the excavator is excavatorworking device. The performance of excavator working device has made agreat impact on operating performance of the whole machine. Therefore,optimize excavator working device, to improve the working performance ofexcavator. There is important significance for the rapid development ofconstruction machinery and the development of the national economy.The working device of typical excavator was the prototype of this work,combining with the research results of mole cricket developed bionic tooth in our laboratory, based on typical of excavator working device simulation designof virtual work and corresponding device. The traditional working device andthe bionic tooth research results for integration, the optimization of work devicemovable arm, it expands the working device operating range, miningperformance is significantly improved, thus improving the performance ofexcavator.The overall structure of excavator consists of a power device, a workingdevice, a rotating mechanism, operating mechanism, transmission system,walking and auxiliary equipment, which the working device is the key parts ofexcavator, the working device will directly influence the working performanceof the whole machine excavator. The working device mainly includes: bucketteeth, boom, bucket, the bucket rod. Bucket tooth configuration affects themining performance. Study on the mole cricket by Gao Hang and Zhang Yanthat mole cricket claws have mining good performance, and for constructingthe bionic tooth, the results of this study, to another type of excavator bucket teeth to bionic optimize. Firstly, a theoretical analysis of kinematics anddynamics of working device, which laid the theoretical foundation for the testand Simulation of follow-up, and then using the bionic fitting technologymanufacturing, application of Pro/E software on the bionic and the excavatorfor3D modeling. Import it into ADAMS software through the intermediateformat, has checked the correctness of the model, and has carried on theanalysis of kinematics, working range parameters, of the excavator workingdevice measurements include: maximum digging radius, the maximum diggingheight, maximum digging depth, maximum unloading height, minimum turningradius, and then using ADAMS the dynamic analysis of the working device,measured maximum digging force of the bucket rod and bucket of workingdevice of excavator bucket teeth of the bionic.Finally, device size parameters of arms were changed, including dynamicangle lateral arm line and the line was changed from67°to65°and70°, andthe arc radius in the sinuosity of the arm was changed from200mm to210mm and190mm, and two sets of data were combined in pair. By the simulation testof ADAMS, the8sets of data, including the scope of work parameters and themaximum digging force were obtained. Results of comparing the measureddata with the working device unchanged shown that, the arc radius in thesinuosity of the arm in210mm and lateral line and the line in65°were themost optimal option scheme.Experiments were conducted on the prototype, several measurements bymeasuring tools, and it is calculated for the average value, working range of theexcavator parameters, maximum digging force of excavator working device.Comparative data last parameters and optimum scheme; it proves theoptimization significantly improves the mining performance of working devicebase on ADAMS.