Trimming is an effective method to solve problem in TRIZ, which simplifies the system and optimizes product by removing problem elements and reorganizing useful functions in system. In order to inspire and guide designers to use resources effectively in the process of trimming, technology evolution trends as the source of knowledge on the base of using trimming rules to guide the innovative process was introduced. The source of resources in problem solving with the evolution trends and function reorganizing guided by trimming rules was comprehensively analyzed, then the mapping relationship between evolution trends and trimming rules was established, a multi-level selection strategy of evolution trends based on trimming rules was proposed, evolution trends were utilized to assist the process of function reorganization. On this basis, the model of trimming process which based on evolution trends was proposed. Finally, the trimming case of armoring machine verified the rationality of the process.

When diamond wire saw cuts circular arc, wire saw deflection angle will be formed due to resistance in the feed direction. If the bending is serious enough, the center of the circular plate will be cut excessively and leads to material scrap. In order to solve the problem, wire saw deflection angle is defined. The static measuring methodology of wire saw deflection angle was proposed. This methodology was based on cantilever type axis force sensor. Through the axis force sensor, voltage values were output and recorded to calculate wire saw deflection angle. Static measuring experiments were carried out in the physical equipment designed and built by authors. In the experiments, the steel rope was used to simulate diamond wire saw and created wire saw deflection angle. The static measuring experiments were carried out to study the relationship between the force of guide wheel and wire saw deflection angle. It was found that, the measured angle was close to the theoretical angle with the increase of initial tension within certain range. Therefore, when the edge of guide wheel whose axis assembles the force sensor is just contacted with steel cable, the wire saw deflection angle can be measured relative accurately by this method.

Market economy competitive pressure is a force to promote enterprises to ongoing product innovation design. In order to improve the efficiency and success rate of product innovation and design, systematic product innovation method is particularly important. Substance-field & scenario decomposition method was a comprehensive innovative design approach which analyed the product lifecycle based on scenario decomposition method, turned a problem into the functional model by combining the method of substance-field model of TRIZ theory system, and then appied the standard solutions for the problem solving. This method provided a systematic approach to product innovation design, which could improve the efficiency and success rate of product innovation and design. Finally the further design of the wheelchair was taken as an example to verify the effectiveness and practicality of the method.

In order to study automatic height adjustment for shearer drum, a simulated cutting experiment device for shearer was built and the schematic diagram of the device was provided.One type of thin seam shearer was selected as prototype.The similarity criterions between model and prototype were established based on similarity theory,and the correlative parameters of simulated spiral drum were determined.Picks arrangement on helical vanes and drum plate were accomplished. By using SolidWorks software,the 3D models of the parts of the simulated spiral drum were established,then the 3D models were assembled,and the interference between parts was checked,thus the 3D model of the simulated spiral drum was finished,also laid the foundation for the design of simulated cutting experiment device for shearer.

Aiming at the problems such as lower extremity injury, the medical assistive limb exoskeleton robot is designed. The basic structure of lower limb exoskeleton system was designed. The lower limb movement was divided into different periods, such as single leg support period and two legs support period. The dynamics computation of lower limb exoskeleton system was made. By the use of the Lagrange equation, the calculation formula of each joint torque was made. The three-dimensional model was established. Based on the collaborative simulation technology of the interface, the exoskeleton was unitedly simulated united simulation by ADAMS and MATLAB software. The curves of each joint's angle and torque in the single leg support period were made. It showed the correctness of the theoretical analysis by comparing the simulation data with the theoretical calculation date. By the simulation analysis of the lower limb exoskeleton, it provides important data and theoretical basis for the motion control and model manufacturing of lower extremity exoskeleton.

Aiming at solving the large measurement error of vehicle operating accuracy caused by the slip of driving Mecanum wheel in the detecting of the position and attitude of omnidirectional vehicle,measuring wheel guiding approach is proposed.Mathematical model is established,and the structure of AGV system is expounded.The layout structure of omnidirectional vehicle was made up of six wheels,including four driving wheels and two driven wheels in the design.The two driven wheels were used as measuring wheels,and the differential principle was applied to the two measuring wheels to get the path information of automatic guided omnidirectional vehicle,at the same time,the problem that the existing omnidirectional vehicle with single measuring wheel couldn't detect accurately in-situ rotary posture was solved.The structure of measuring wheel with floating three freedoms was put forward.It could maintain contact with ground in real time and ensure the accuracy of position detection.ADAMS simulation for the pose detection of three typical movements which were straight line,curve and in situ rotation is performed.The results show that this guidance mode can meet the accurate detection of position and attitude of omnidirectional vehicle on flexible path setting and has a wide application range.

In order to know the performance difference of the modified face gears with helical pinion and spur pinion under the same power density better and choose a more suitable kind of face gear drive for high speed and heavy load conditions. Based on meshing theory, the tooth surface equations of the modified face gears with helical pinion and spur pinion were derived. The three-dimensional models of the modified face gears with helical pinion and spur pinion were built by CATIA. The finite element contact analysis method was used and the contact stress, bending stress and contact ratio were considered as performance indexes of the face gears to expand the research. Researches proved that the contact stress of modified face gear with helical pinion was much lower than that of modified face gear with spur pinion. The maximum contact stress was reduced by 16.3% in the case. The bending stress of modified face gear with helical pinion was much lower than that of modified face gear with spur pinion. The maximum bending stress was reduced by 32.4% in the case. The contact ratio of modified face gear with helical pinion was much higher than that of modified face gear with spur pinion. The contact ratio was increased by 10.3% in the case. So the transmission performance of the modified face gear with helical pinion is better than that of modified face gear with spur pinion under the same power density, the former is more suitable for the lightweight design under high speed and heavy load condition.

When the sustained platform of down-the-hole drill was designed, the working condition was simply considered and it was overlooked that wrong manipulation led to ultimate condition. In order to research the dangerous section of the platform under different working conditions, the platform of down-the-hole drill sustained by one outrigger was analyzed minutely in mechanism and normal and ultimate conditions were defined. A mechanical model was established based on theory of mechanical balance and deformation compatibility condition. The platform was analyzed in statics by using software ANSYS. The maximum stress value,the maximum deformation value and part stress concentration area of the platform under each condition were revealed. The results indicated that the maximum stress value and the maximum deformation value under ultimate condition were higher than normal condition. Besides, the most part of the platform was in low-stress condition and could find out excessive areas in strength and it met the demand of design under condition. It provides reference for the optimization and improving of the platform structure.

Monorail car rail unit is the most important part of the monorail system.The rail unit's normal work ensures the safe running of the monorail car.The safety analysis of transient dynamics was analyzed during the meshing process between rail unit and pin wheel unit by using the ANSYS Workbench platform.The special Workbench platform setting function was used to evaluate the rigid flexible coupling dynamic analysis during the meshing process described above.In the process of analysis,the pin wheel unit and the rail unit were looked as rigid body and the elastomer respectively.The rigid flexible coupling dynamic analysis could eliminate the result error caused by simplifying technological process and shorten the calculation time.The time course and the distribution nephogram of the equivalent stress and the safety coefficient were obtained under the four different working conditions in the meshing process about rail steel,gear rack and the contact position on both sides of the weld joint.The result of analysis can provide theoretical basis for the weld process design,can lay a foundation for optimization design and fatigue check of rail unit and can provide guidance for the practical application of rail unit.

The finite element model was established by means of ANSYS Workbench for improving dynamic performances of an impacting-crushing rock road-header working mechanism,the 1 to 6 order natural frequencies and modal characteristics of the working mechanism were gotten by modal analysis and harmonic analysis.The modal frequency which influenced the dynamic performance of the working mechanism was determined.With sensitivity analysis,the main structural parameters which affected the dynamic performance of working mechanism were determined.The mapping relationships among structural parameters and the maximum dynamic stress,the bending dynamic stiffness,the maximum dynamic displacement on the top of the drill rod were established by the BP neutral network.The dynamic performance optimization of the structural parameters was realized by genetic algorithm.Application results indicated that the maximum dynamic displacement on the rod top decreased by 27.5%,the maximum dynamic stress decreased by 43.07%,and the natural frequency increased by 24.7% after the optimization, indicated the dynamic performance was improved obviously.

The collector ring under compression is installed between a exterior orbit and a interior one that produces contact zone between ring and orbits and obtains electro-transport.Aiming to define character of rolling collector ring mechanics and its compression state,based on the distortion of ring after assembling,a bending deformation model of ring under compression was established with bending principle. Hertz contact theory and electrical contact theory were used to obtain the relationship among contact deformation,contact resistance and design size of the ring.According to the constraint conditions of assembling,the rational preinstalling and discriminant range of compression of collector ring were determined.By means of calculation and validation of design living example and simulation of software ABAQUS,the result of mechanics after simulation almost kept the same with calculation of theory model.The research provides reference for the development and optimum design of rolling collector ring.

In order to improve the safety of drilling, ensure annulus can be quickly and reliably sealed and provide convenience for well-killing operations,a kind of downhole blow-out preventer near the bit was designed, whose structure and working principle were introduced in detail. By establishing the force model of push block mechanism in downhole blow-out preventer, he relationship between reacting force of push block to column with cone angle of push block and deformation amount of disc spring was analyzed. The strength of spline was checked. The rubber sleeves with different thickness and hardness were analyzed based on the finite element software. Meanwhile the indoor experiments of downhole blow-out preventer were carried out. Research results showed that when deformation amount of single disc spring was 0.2 mm and cone angle is 45°, reacting force of push block to column produced by single disc spring was 2.2 kN which was close to experimental value; when torque of drill string reached to 45 000 N·m, extrusion stress of spline was in the range of allowable stress. In the same compression and seal clearance, the wider width and the bigger the hardness of the rubber was, sealing ability was stronger. When the greater hardness of the rubber was, more pressure was needed to compress rubber. The researching achievement has certain significance for the design of downhole blow-out preventer.

Aiming at the problems existing in the core package pins puncture of aluminum electrolytic capacitor such as low automation degree,great labor intensity and so on,the control system for core package pins puncture machine of aluminum electrolytic capacitor was designed,and the design scheme of the electrical hardware and software system were provided.The system took the Mitsubishi FGA series PLC as the core,combined with the stepper motor,vibrating plate,cylinder,detection and position of the fiber optic sensor and position sensor,to achieve automatic washer loading,core package moving,pins puncture,core package flipping and other processes with automatic continuous running.On-site test and operation show that the system runs reliably and stably,operated simply,and with low labor intensity,which can satisfy the requirement of the production line of high efficiency and quality automation processing.

Vibration is one of the common loading types to aircraft plate.It is frequent to use the stiffen method to reduce the vibration amplitude so as to improve the vibration fatigue life of thin plate.In order to study the anti-vibration fatigue method by stiffen,it is aimed to reveal the impacts of connecting method and connecting direction of stiffen on the vibration fatigue life of a thin plate.Firstly,the kinetic equation of a stiffen plate was set up by combining the vibration theory of thin plate and the deformation compatibility condition of plate and stiffen.Then the typical stiffen plate was employed to study the modeling method of the link element between the plate and the stiffen beam via building up the finite element dynamics model of stiffened plate structure with rivet,spot-weld and rolling-weld.Therefore,the dynamics properties of single-direction and double-direction stiffened plate were studied and the impacts of stiffen on the vibration properties were discovered.Finally,the fatigue life of the structure was estimated based on the analysis of the dynamic response.Meanwhile,the influence of the connection mode and the direction of the connection on the fatigue life was studied.Results indicate that the stiffness of the single-direction stiffened plate is higher than that of the double-direction stiffened plate.Double-direction stiffened plate is benefit to the strength of vibration fatigue for the thin plate and the fatigue life of the rivet stiffened plate is the minimum.

A new type of hydraulic oscillator for oil drilling is presented, which can effectively reduce the frictional resistance and increase the drilling efficiency. The hydraulic oscillator was driven by a turbine, and double eccentric valve was used as the pressure pulse generating mechanism. By establishing the motion characteristic equation of the double eccentric valve, the optimal size of the valve disc was obtained based on the actual working conditions. The performance test experiment of the hydraulic oscillator with selected valve was carried out, the experimental results showed that the vibration impact force of the hydraulic oscillator was about 15 859 N, the vibration displacement was about 4.1 mm, and the vibration frequency was about 11.4 Hz when the drilling pressure was 30 kN, the flow rate was 28 L/s, and the working medium was water. The analysis and experimental results have guiding significance for the design and application of the hydraulic oscillator.

A new kind of load-sensing counterbalance valve which used in the machinery with folding boom was introduced, of which the structure and working principle had been expatiated. A combination of the orifice was used in the counterbalance valve's spool, and the fitted characteristic curve of the open area was produced by the software of MATLAB. When the load pressure was changed, in order to achieve steady quantity of flow, the valve could control the displacement of the counterbalance valve's spool to adjust the flow area. The proposed design not only made the valve possess multi-level adjustment ability but also raised the sensitive nature of the load. To test the performance of the valve under actual application environment, the installation test was done on the concrete pump truck. The results showed that the control pressure was low, the consumption of the system's power was reduced, the sensitive nature of the load had a good performance, the boom ran smoothly, and the stability was improved.