Design And Mechanical Characteristics Analysis Of Tractor Test Model For Tower Drill

Drilling rig derrick as part of the rig hoisting equipment, is an important part of the oil industry production equipment, play an important role in oilfield production. Because of the bad working condition of the complex stress state, and it is very important to the study of drilling derrick. Because of the bad working condition of the complex stress state, and it is very important to the study of drilling derrick.Based on a proposed deep drill tower drill derrick as the prototype, according to the length of the geometric similarity criterion, the rig test model was designed, and compared the simulation results and experiment results of derrick model, validate the rationality of the design. Mainly has carried out the following research:The development of the model of the derrick:According to the length of the geometric similarity criterion, according to the1:14scale than scaling rig test model. Through H section steel, Angle steel, square pipe steel three different profiles of contrast, considering test site size, derrick and test security factors such as intensity, optimizing Angle as the derrick model profiles, defined Angle size; Electric hoist hook load standard weight are adopted to simulate the actual derrick crane, hook, such as static load, working load, electric hoist drive farmar movement simulation working condition of tripping.The finite element simulation analysis:Using PROE software to wire frame structure modeling of rig test model, and import the ANSYS finite element analysis software, the complete model of the derrick in constant load conditions and maximum hook load case analysis of the static load strength; Through analysis on the stability of the derrick of the model, it is concluded that rig test model overall stability safe and reliable; Modal analysis was carried out on the model derrick has been in the first10order natural frequency and vibration mode.Experimental tests and results contrast analysis with finite element analysis results:Use of YD-88-c portable super strain gauge to complete the static load test of derrick model, under the condition of static load test of derrick model of strain; By hammering method, using piezoelectric sensors. KL-1mixed filter resistance, CA charge amplifier complete modal test of derrick model. such as natural frequency testing derrick. Will test data were analyzed with the finite element analysis results. analysis of error sources, and further correction finite element model, the finite element results closer to derrick model test results. Reasonable derrick structure finite element calculation model is established and the solving method, provide theoretical guidance for the derrick structure design and optimization, can also guide the research of other oil derrick.Model is validated by the experimental study on the derrick before the feasibility of the finite element calculation, the results provide theoretical basis for derrick design and provide a scientific basis for the calculation for the project; Finite element model of correction helps to establish a reasonable model derrick mast structure finite element model and solving method; Model of the derrick processing also provide scientific research platform for drilling equipment environment simulation test.