Jiangsu University

Jie Sheng

Long Chen

Yingfeng Cai

Zhen Zhu

Changgao Xia

Xiang Tian

Jianzhong Zhou

Xiaodong Sun

Shu Huang

Yihan Zhang

Rui Hou

Xiankai Meng

Jiangyi Han

Hang Zhang

Chun Su

Jiean Wei

Mingyuan Shan

Wei Xu

Jinzhong Lu

Haobin Jiang

Falin Zeng

Jianguo Zhu

Jing Li

Cheng Wang

Hansong Chen

Hongwei Yang

Hongda Zhou

Xiangwei Yang

Jiale Xu

Shuangliu Zhou

Qing Yu

A mechanical-electrical-hydraulic composite transmission device and a control method thereof are provided. The device includes an input shaft assembly, a power-split assembly, a hydraulic transmission assembly, an electrical variable transmission assembly, a mechanical transmission assembly, a power-convergence assembly, and an output shaft. Three types of transmission modes including single transmission modes, power-split composite transmission modes, and power-convergence composite transmission modes are implemented by controlling engagement and disengagement of clutches and a brake. Free switching between various transmission modes is realized, the requirements of engineering machinery for a transmission device with multiple modes in different working conditions are satisfied, the engine power utilization is improved, and the fuel economy is increased. The shift impact is effectively reduced and the speed ratio adjustment range is expanded. The hydraulic transmission enables quick startup and stable operation and implements speed variation and direction change easily and rapidly without causing impact.

Mechanical-electrical-hydraulic hybrid transmission device and control method thereof

A hydro-mechanical series and parallel transmission device and a control method thereof are provided. The device includes an input shaft assembly, a hydraulic transmission assembly, a planetary gear transmission assembly, an intermediate gear transmission assembly, and an output shaft assembly. Switching among a hydraulic transmission mode, a mechanical transmission mode, and a hydro-mechanical composite transmission mode is implemented through combination and engagement/disengagement of clutches and brakes. The hydro-mechanical series transmission is used to expand the speed regulation range of the hydraulic transmission and is combined with the hydraulic transmission to meet the requirements on precision and the speed regulation range. The requirements of low-power and high-power operations are met through combination of the hydro-mechanical series and parallel transmissions. Multiple transmission modes are formed to adapt to the working conditions of startup, operation, and transfer.

Hydro-mechanical series and parallel transmission device and control method thereof

A hybrid transmission device with a mechanical continuously variable transmission and a control method thereof are provided. The device includes an input shaft assembly, a front planetary gear transmission assembly, a rear planetary gear transmission assembly, an output shaft, and a mechanical continuously variable transmission. Single transmission modes and hybrid transmission modes are implemented through combination and engagement/disengagement of brakes and clutches. The device and the method realize free switching among various transmission modes and integrates the single transmission modes and the hybrid transmission modes, thereby increasing the degree of freedom in adjustment and expanding the speed regulation range. Input and output shafts of a front cup wheel and ring disc transmission mechanism and a rear cup wheel and ring disc transmission mechanism are coaxial, so that the structure is compact and intermediate rollers can stably and reliably transmit large torque.

Hybrid transmission device with mechanical continuously variable transmission and control method thereof

A mechanical-double ring-hydraulic composite transmission mechanism includes an input member, a convergence mechanism, a hydraulic transmission mechanism, a double ring mechanism, an output member, a clutch assembly, and a brake assembly. The clutch assembly connects a left planetary gear train to a right planetary gear train. The clutch assembly connects the input member to the hydraulic transmission mechanism, the double ring mechanism, the left planetary gear train, and the right planetary gear train. The clutch assembly connects the hydraulic transmission mechanism to the right planetary gear train. The clutch assembly connects the double ring mechanism to the left planetary gear train. The clutch assembly connects the left planetary gear train and the right planetary gear train to the output member. A continuous transmission ratio between the input member and the output member is provided by adjusting a displacement ratio of the hydraulic transmission mechanism.

Mechanical-double ring-hydraulic composite transmission mechanism

The present disclosure provides a method for photo-curing 4D printing of a multi-layer structure with an adjustable shape recovery speed, and a multi-layer structure printed thereby. The multi-layer structure printed by the method for photo-curing 4D printing of the multi-layer structure with the adjustable shape recovery speed includes a plurality of deformation units sequentially connected in series, and each of the plurality of the deformation units includes two slow layers, a fast layer, and a transition layer; and the fast layer is arranged between the two slow layers, and the transition layer is arranged between at least one of the two slow layers and the fast layer. In the present disclosure, a low cross-linking layer is doped with a nanocarbon light-absorbing material to solve the problem that the low cross-linking layer is prone to over-curing when a high cross-linking layer is printed on the low cross-linking layer.

Method for photo-curing four-dimensional (4D) printing of multi-layer structure with adjustable shape recovery speed, and multi-layer structure prepared by photo-curing 4D printing

A multi-mode hydro-mechanical hybrid transmission device includes an input member, a hydraulic transmission mechanism, a mechanical transmission mechanism, a convergence mechanism, an output member, a clutch assembly, and a brake assembly. The clutch assembly connects an output end of the input member to an input end of the hydraulic transmission mechanism, the mechanical transmission mechanism, and the convergence mechanism. The clutch assembly connects an output end of the hydraulic transmission mechanism to the convergence mechanism. The clutch assembly connects the mechanical transmission mechanism to the convergence mechanism. The convergence mechanism is connected to the output member. Continuously changing transmission ratios are provided between the input member and the output member by adjusting a displacement ratio of the hydraulic transmission mechanism and selectively controlling engagement of the clutch assembly and the brake assembly.

Multi-mode hydro-mechanical hybrid transmission device

The present invention relates to the field of 4D printing, and particularly to an electro-responsive folding and unfolding composite material for 4D printing, a method for manufacturing the same, and a method for regulating shape memory behavior thereof. In the process of layer-by-layer printing, conductive layers are embedded into a pre-designed shape memory polymer matrix through spray-coating and laser-irradiation nano-fusion welding, to manufacture a folding and unfolding structure with electro-responsive shape memory behavior. The distribution and range of heat affected zones in the electro-responsive shape memory folding and unfolding structure are controlled by adjusting the number of electric heating layers energized and the value of an energizing voltage. The speed of shape recovery and the degree of shape recovery of the structure are regulated according to a magnitude relationship between a shape recovery force Fand a resistance Fto shape recovery of the structure.

Electro-responsive folding and unfolding composite material for 4D printing, method for manufacturing same, and method for regulating shape memory behavior thereof

In a cryogenic workbench, a cryogenic laser peening system and a control method, a tapered surface gap d is adjusted, based on the electromagnetic principle, to control the gasification volume of liquid nitrogen, then the temperatures of the copious cooling workbench and the surface of a sample are precisely controlled by means of the adjustment of the heat absorption amount of liquid nitrogen gasification, the temperature adjustment range and the temperature rising/lowering rate of the cryogenic laser peening system are effectively extended, and the precision of the control of the surface temperature of the sample is increased in combination with a closed-loop control. Additionally, an intelligent control of a cryogenic laser peening process is realized by means of a computer and a PLC control unit, whereby the usage amount of liquid nitrogen in the experiment process is reduced and the processing efficiency is improved.

Cryogenic workbench, cryogenic laser peening experiment system and control method therefor

A method and a device for increasing a laser induced shock wave pressure. According to the method, plasmas () are generated by impinging an aluminium foil () using lasers; a high-voltage pulse electrode () discharges to the plasmas () to induce and form a photoelectric combined energy field and then high-temperature plasmas () having the characteristics of an ultra-high density and an ultra-high speed expansion are induced and generated; a surface to be processed is impacted by the high-temperature plasmas () in a restrained state; the laser induced shock wave pressure is increased substantially; the surface of a high-strength material is reinforced, and the strength, hardness, abrasion resistance and anti-fatigue performances of the high-strength material are improved. The device comprises a laser, the electrode (), a high-voltage power supply (), a discharging medium (), a moving platform, etc.

Method and device for increasing laser-induced shock wave pressure

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Jiangsu, China

Jie Sheng