Shaanxi Hande Axle Co.

Fengcheng, China

Shaanxi Hande Axle Co.

Fengcheng, China
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Zhou C.,Tsinghua University | Ding W.-Q.,Shaanxi Hande Axle Co. | Gui L.-J.,Tsinghua University | Fan Z.-J.,Tsinghua University
Zhendong yu Chongji/Journal of Vibration and Shock | Year: 2015

In order to analyze the dynamic behavior of a drive axle gear transmission system more accurately and guide vibration and noise reduction design of drive axle products, an efficient strategy based on nonlinear bearing theory, the finite element method and the modal synthesis method were proposed to analyze the drive axle gear transmission dynamic system considering effects of housing. The whole drive axle transmission system's dynamic finite element model including final drive gear transmission assembly, differential gear transmission assembly, hub assembly and housing etc. was built. The modal analysis of the whole system was performed. The response of the system to a unit harmonic gear transmission error under the hypoid gear mesh was calculated. The effects of housing on the gear transmission system's dynamic features were studied. An example for dynamic analysis of a rear drive axle gear transmission system showed that the effects of housing on the dynamic features of the drive axle gear transmission system are significant. ©, 2015, Chinese Vibration Engineering Society. All right reserved.


Zhou C.,Tsinghua University | Wang Q.,Tsinghua University | Ding W.,Shaanxi Hande Axle Co. | Gui L.,Tsinghua University | Fan Z.,Tsinghua University
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | Year: 2016

Driveline and housings are connected by roller bearings. The bearing stiffness is nonlinear and coupling in all directions and changes with the input torque of drive axle, which leads to variation in the drive axle system dynamics. Based on the nonlinear bearing theory, the finite element method and modal synthesis method, a drive axle final drive gear transmission system dynamic model with final drive gear transmission assembly, differential gear transmission assembly, hub assembly and housings etc. is built. According to the magnitude of the input torque of the pinion shaft, the load cases are set out into light load, medium load and heavy load. Nonlinear bearing stiffness is calculated corresponding to each load case. The axial stiffness and radial stiffness of final drive roller bearing with load change characteristics are analyzed. Dynamic analysis of the whole drive axle system to a unit harmonic transmission error at the hypoid gear mesh is performed in the case of different input torques. The influence of the input torque on the drive axle is researched. The frequency response characteristics of final drive hypoid gear dynamic meshing force is analyzed when the drive axle system works in different load cases. The results show that the drive axle system dynamics change with the size of the input torque with a certain regularity, and can guide the design of the vibration and noise reduction of drive axle system in order to avoid dangerous conditions effectively. © 2016 Journal of Mechanical Engineering.


Zhou C.,Tsinghua University | Tian C.,Tsinghua University | Ding W.,Shaanxi Hande Axle Co. | Gui L.,Tsinghua University | Fan Z.,Tsinghua University
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | Year: 2016

The accurate time-varying mesh parameters are the foundation of the dynamics analysis of hypoid gear system. Based on the theory of finite element contact analysis, loaded tooth contact analysis (LTCA) is implemented by employing ABAQUS software. Hypoid gear time-varying equivalent mesh parameters, including time varying equivalent mesh point position, line of direction of time varying equivalent mesh force, translational transmission error and time-varying equivalent mesh stiffness, are calculated. Effect of different torque loads on the mesh parameters is studied. The results show that torque loads have important impacts on time-varying equivalent mesh parameters of hypoid gear. Transmission error obtained by finite element method shows a good agreement with the classical tooth contact analysis (TCA) method. The loaded contact area obtained by finite element method is also shows a good agreement with the test. So the correctness of the model and the calculation is verified. The time-varying equivalent mesh parameters calculated by finite element method can reflect the time-varying mesh characteristics of hypoid gears precisely, which provide the basis to the study of hypoid gear dynamics. © 2016 Journal of Mechanical Engineering.


Guo F.,Xi'an Jiaotong University | Dong G.,Xi'an Jiaotong University | Dong L.,Shaanxi HanDe Axle Co.
Applied Surface Science | Year: 2014

For the artificial hip joints, passive film formed on the Co-Cr-Mo alloy acted as a highly protective barrier in the body fluid. But its stability, composition and structure always influenced the protection. In this work, passive film was obtained by high temperature treatment. The effect of passivation environment on the properties of the passive film was investigated. The film's surface roughness, micro-hardness and structure were analyzed. In order to study the tribological behavior of the passive film, pin-on-disk tribotest was carried out under bovine serum albumin (BSA) and saline solution. Results indicated the sample passivated in vacuum had friction coefficient of 0.18 under BSA solution and 0.53 under saline solution; the sample passivated in air had friction coefficient of 0.14 under BSA solution and 0.56 under saline solution. In addition, the reference sample without passivation was tested under the same condition. It showed friction of 0.22 under BSA solution and 0.45 under solution. The lubricating mechanism was attributed to BSA tribo-film absorption on the surface and high hardness passive film. © 2014 Elsevier B.V.


Zhang L.-J.,Xi'an Jiaotong University | Ning J.,Xi'an Jiaotong University | Zhang X.-J.,Xi'an Jiaotong University | Zhang X.-J.,Shaanxi HanDe Axle Co. | And 2 more authors.
Materials and Design | Year: 2015

Laser-arc hybrid welding of highly reflective T2 copper was conducted and significant synergy effect was observed. Effects of primary welding parameters on the shape and integrity of copper joints were studied through bead-on-plate (BOP) welding test. Results of X-ray inspection and infrared photography showed that both porosity susceptibility and crack susceptibility were highly dependent on welding heat input or energy coupling efficiency, but had totally different trend, which narrowed the process window of BOP welding of copper. Hot crack and porosity were successfully suppressed by using a square butt joint configuration with a proper gap size. A 4-mm thick, defect-free butt joint was obtained by single-pass hybrid welding at a speed of 1.3. m/min without preheating the work piece. The microstructure, microhardness, mechanical properties and tensile fracture surface of the butt joint obtained were studied. Tensile strength and elongation rate of the butt joint obtained were about 87% and 56% of that of base metal, respectively. The lowered mechanical properties of butt welded copper joint were related to the softening of fusion zone (FZ) and its vicinity, the coarse microstructure in FZ and heat affected zone (HAZ), and the possible concentration of impurity elements at the central region of FZ. © 2015 Elsevier Ltd.


Zhang L.-J.,Xi'an Jiaotong University | Zhang G.-F.,Xi'an Jiaotong University | Ning J.,Xi'an Jiaotong University | Zhang X.-J.,Xi'an Jiaotong University | And 2 more authors.
Materials and Design | Year: 2015

Laser welding of highly reflective materials, such as copper, has suffered problems such as spatter, underfill and undercut for a long time. This work analyzed the associated mechanism and suggested that appearance and integrity of laser welded copper joint could be improved by conducting the welding process at a high welding speed which is slightly below the critical welding speed for full-penetration welding at the specified laser power. The microstructure, mechanical properties and electrical conductivity of the T2 copper joint achieved under high welding speed were tested. Results show that copper joint and base material (BM) have similar electrical conductivity, the weld fusion zone (FZ) and the heat affected zone (HAZ) are softened; the tensile strength and elongation of the joint are approximately 20% and 84% below those of the BM respectively. The joint breaks near the interface between the longitudinal columnar grain structures (LC) growing along welding direction at the FZ center, and the horizontal columnar grain structures (HC) growing perpendicular to the welding direction at other area of FZ. Degradation of the mechanical properties of copper joint is attributed to the softening of the heated zone and the big angle between the growth directions of LC and HC. © 2015 Elsevier Ltd.


Zhang J.M.,University of Science and Technology of China | Cai H.,University of Science and Technology of China | Sun W.C.,University of Science and Technology of China | Cai P.H.,Shaanxi HanDe Axle Co.
Materials Science Forum | Year: 2015

The growth of microarc oxidation (MAO) coatings on aluminum substrates was controlled via changing solution temperature from 10 to 60 ℃. The results show that an elevation of the temperature lowers the applied voltage and the coating thickness. The coating formed in low-temperature solution demonstrates large-sized pores and contains lots of elements only originating from solute such as P, W, and V. On the contrary, numerous small-sized pores disperse homogeneously on the coating synthesized in high-temperature solution. It is assumed that the variation of solution temperature affects the dissolving capacity of the alkaline solution and the adsorptive capacity of solute anions, thus dominating the growth behaviors of MAO coating. © (2015) Trans Tech Publications, Switzerland.


Cai H.,University of Science and Technology of China | Sun W.C.,University of Science and Technology of China | Zhang J.M.,University of Science and Technology of China | Cai P.H.,Shaanxi HanDe Axle Co.
Materials Science Forum | Year: 2015

Area-selectively liquid-phase-sintering (AS-LPS) method was developed to control the coarsening of Si particles in Al/60vol.% Si composites with the help of sol-gel-derived interfacial modification, achieved by pre-coating discontinuous Al2O3 film on Si powders. The results show that due to the local presence of less than 1 μm-thick films, Si particles can approximately preserve their as-received size and morphology after being sintered at 950 °C. Whereas, for those prepared by use of the unmodified Si powders, Si phases evolve to several hundred-micron-sized flakes, being similar to the typical eutectic Si in Al-Si casting alloys. It is assumed that the Al2O3-film-coated areas at Al/Si interface control the dissolution of Si into Al liquid, while in uncoated areas Al matrix and Si particles bond together by LPS, thus realizing AS-LPS. © (2015) Trans Tech Publications, Switzerland.


Trademark
Shaanxi Hande Axle Co. | Date: 2010-04-13

Axles of automobiles; axles for land vehicles; axles for motor vehicles; hubs for vehicle wheels; land vehicle chassis; motor vehicle chassis; brake segments for land vehicles; brake segments for motor vehicles; non-skid devices for vehicle tires, namely, chains for vehicles, anti-skid textile covers for tires; lorries; trucks; wagons; sports cars; automotive wheel hubs.


Trademark
Shaanxi Hande Axle Co. | Date: 2010-04-06

Axles of automobiles; axles for land vehicles; axles for motor vehicles; hubs for vehicle wheels; land vehicle chassis; motor vehicle chassis; brake segments for land vehicles; brake segments for motor vehicles; non-skid devices for vehicle tires, namely, chains for vehicles, anti-skid textile covers for tires; lorries; trucks; wagons; sports cars; automotive wheel hubs; torsion bars for land vehicles; torsion bars for motor vehicles; vehicle wheels; land vehicle bumpers; axle journals for land vehicles; bands for wheel hubs; transmissions for land vehicles; propulsion mechanisms for land vehicles, namely, vehicle propellers, engines for land vehicles, motors for land vehicles, air turbines for land vehicles; land vehicle suspension springs; connecting rods for land vehicles, other than parts of motors and engines; transmission shafts for land vehicles.

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