Research On Parametric Design Of Crowd Driving Gearbox Of Mining Excavator

The mining excavator is widely used in opencast mining. It make great demands of the mining excavator with the planning and deployment of national energy development strategy. Users ask for more power and load besides higher speed, more loads, less noise and higher reliability that should be focus on. Meanwhile user should be met with demands of improving efficiency, reducing cost, have a friendly human-computer interaction, a higher artificial intelligence requirements to meet a wide range of requirements in human.The crowd driving gearbox is an important component of the mining excavator working equipment. When dipper is under the worst status, crowd driving gearbox applies push driving power anyway, and its power and load is the essential factor of the force. The main part of the reducer is the gear transmission, which can offer enough driving force through changing the speed of the electromotor, and obtain the final results and enhance efficiency. Because of the similar structure and different data, it cost a lot of time calculating the parameter that is needed in the model, which will low the efficiency and postpone the product design period and not to suffice users. This paper works on solving that kind of design problem with quadratic development of UG in order to simplify and parameterize the repeat work, and greatly enhance the efficiency.The paper is composed of three parts. The first part is about how to program to improve design efficiency. The detail is parameterized design for crowd driving gearbox through quadratic development of UG. Successful development of the module plays an important role in solving the problem mentioned above, and the product quality is largely based on this part. This module is just composed of single gear, one gear-gear reducer, two gear-gear reducer. It also concludes the similitude relationship of the arithmetic and realizes them with programming and establishes the interface dialog box with quadratic development of UG, which can make input and output data available. Following that, programming, compiling, linking with GRIP language which is appoint to model in UG and booting the program from the specific position with input data from dialog box and output data into GRIP program. It will form a functional module named "the parameterized design for excavator crowd driving gearbox".The second part is mainly conducts the ADAMS dynamics simulation analysis based on crowd driving gearbox which is formed in the first part, applying the restriction in simulation in UG. Because of the same calculation core of UG and ADAMS, the transition between them is better than others. The restriction applied in UG will still work in ADAMS after transition, input the *.anl file, *.cmd file, *.xmt_txt file which is formed by transition from the simulation part in UG to ADAMS. The model will be available for analyzing the speed and direction of every axis and meshing force in X coordinate and Y coordinate direction in time field and frequency field. the result turn out that it matched theory calculation, which means the model is correct and developed successfully through the simulation of rigid dynamics theory. the next step, the paper uses the traditional formula of strength for calculating the regular check, and puts the specific parameters of the first part into the formula. Contrasting the calculation results and materials limit stress value, it can be found that the design results are in line with the strength of the requirements, the calculation results correct, and it is a reasonable method of parametric design.This paper have carried out "the parameterized design for crowd driving gearbox of excavator" module with the tool for the quadratic development of UG, and the result and method have great significance in practice. They can enhance the development efficiency, shorten the design periods, improve the quality and reliability of the product; finally it can bring obvious economic benefits.