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1550 results about "Mechanical design" patented technology

Double-foot robot lower limb mechanism with multiple freedom degree

InactiveCN101121424ARealize anthropomorphic gait walkingMany degrees of freedomSelf-moving toy figuresArtificial legsKnee JointGait
The invention provides a lower limb mechanism of a biped robot with multiple degrees of freedom. It includes the waist, thigh, calf and foot, the thigh includes the right thigh and the left thigh, the calf includes the right calf and the left calf, and the foot includes the right foot and the left foot; the waist is composed of two parts, the right hip joint and the left hip joint, connected through the waist Board connection composition; the right hip joint and left hip joint, right thigh and left thigh, right calf and left calf, right foot and left foot are symmetrical structures; the hip joint and thigh are connected in parallel through a Hooke hinge and two connecting rods The thigh and the lower leg are connected through the knee joint connecting rod and the knee joint shaft; the lower leg and the foot are connected in parallel through the Hooke hinge and two ankle joint connecting rods. The invention has the characteristics of many degrees of freedom, and can realize the humanoid gait walking of the biped robot to the greatest extent. The structure is simple, the principle is clear, and the economy is feasible. Large load capacity, compact structure, low cost, low design difficulty, strong feasibility, suitable for biped robot mechanism design requirements.
Owner:HARBIN ENG UNIV

Quantitive type experimental device for dynamic and static performances of static-pressure rotary table

The invention provides a quantitive type experimental device for dynamic and static performances of a static-pressure rotary table, and belongs to the field of machinery design and manufacture. According to the experimental device, a loading device (5) and a loading arm (6) are used for changing magnitude of loads or changing oil supply pressure to control the distance between a static-pressure oil cushion (10) and a rotary table disc chuck (7), a pressure sensor (12) is used for measuring pressure in an oil cavity, an eddy current displacement sensor (11) is used for measuring the thickness of an oil film, a thermocouple temperature sensor (3) is used for measuring oil temperature, a force sensor (4) is used for obtaining magnitude of loading force, a pressure gauge a (15) on a multi-head pump at an oil inlet in the oil cavity is used for measuring pressure of the oil inlet of the oil cavity, and a pressure gauge b (16) arranged between an oil pump and the multi-head pump is used for measuring the oil supply pressure of the static-pressure rotary table. By means of the experimental device, a test of the dynamic and static performances of the static-pressure rotary table is carried out under the condition that temperature is between minus 10 DEG C and 60 DEG C and pressure is not more than 100 MPa, and the experimental device provides guarantee for solving problems in engineering, optimizing structural parameters of the rotary table, and improving machining precision of the rotary table.
Owner:BEIJING UNIV OF TECH

Variable air exhaust through flow area air inlet pressure control type adjusting device for turbocharged engine

A variable air exhaust through flow area air inlet pressure control type adjusting device for a turbocharged engine belongs to the technical field of mechanical design and comprises an air compressor, an engine, a turbine, a volume cavity, a rotation body, a spring, a rotation rod, a rotation shaft and a rotation plate. The longitudinal sections of the volume cavity and the rotation body are both in arc shapes, the rotation plate is installed in an air exhaust pipe, the rotation plate and the rotation shaft are fixed together, the left wall of the rotation body is connected with the left wall of the volume cavity through the spring, and two ends of the connection pipe are respectively communicated with the right wall of the volume cavity and an air inlet pipe of the engine. When pressure in the air inlet pipe of the engine is high, the rotation body drives the rotation plate to rotate in a counterclockwise mode, pumping loss of the engine is small, and the whole performance is excellent. When pressure in the air inlet pipe of the engine is low, the rotation body drives the rotation plate to rotate in a clockwise mode, available energy in front of the turbine is more, air inlet pressure of the engine is high, and the whole performance is excellent. The variable air exhaust through flow area air inlet pressure control type adjusting device for the turbocharged engine is reasonable in design, simple in structure and suitable for a turbine single inlet turbocharged system.
Owner:SHANGHAI JIAO TONG UNIV

Wearable handling assistor

The invention provides a wearable handling assistor and belongs to the technical field of mechanical design. Leg assemblies are arranged on the two sides of a waist bent rod, and thigh inner rods of the leg assemblies are connected to the waist bent rod through revolute pairs; suspension belt and ratchet mechanisms are arranged on the two sides of the top of a back bearing plate, ratchet wheels of the suspension belt and ratchet mechanisms are arranged coaxial with coiled springs and are fixed to shafts through key grooves, suspension belt shafts are fixed and wind around the shafts, one ends of the coiled springs wind around the shafts, the other ends of the coiled springs are fixed to racks, one ends of pawl springs are fixed to the racks, the other ends of the pawl springs are connected to pawls, and the tail ends of the pawls are connected to pull wires controlling the pawls to be retracted or released; a connecting rod with a spherical hinge is provided with a ring groove, a back connecting plate is connected to the connecting rod with the spherical hinge through a revolute pair, springs on the two sides are fixed to the back connecting plate and the waist bent rod, a middle spring is fixed to the back connecting plate and the waist bent rod, and the connecting rod with the spherical hinge is connected to the waist bent rod through a spherical pair. The wearable handling assistor is mainly used for assisting in manual handling.
Owner:枣庄华亿矿业集团有限公司

Rotation control type pipeline reducing rate variable device

A rotation control type pipeline reducing rate variable device belongs to the technical field of mechanical design and comprises an air compressor, an engine, an air exhaust pipe, a turbine, a volume cavity, a rotation body, a spring, a connection pipe, a rotation rod, a rotation shaft and a rotation plate. The longitudinal sections of the volume cavity and the rotation body are both in arc shapes, the rotation plate is installed in the air exhaust pipe, the rotation plate and the rotation shaft are fixed together, the left wall of the rotation body is connected with the left wall of the volume cavity through the spring, and two ends of the connection pipe are respectively communicated with the right wall of the volume cavity and the air exhaust pipe. When pressure in the air inlet pipe of the engine is high, the rotation body drives the rotation plate to rotate in a counterclockwise mode, pumping loss of the engine is small, and the whole performance is excellent. When pressure in the air inlet pipe of the engine is low, the rotation body drives the rotation plate to rotate in a clockwise mode, available energy in front of the turbine is more, air inlet pressure of the engine is high, and the whole performance is excellent. The rotation control type pipeline reducing rate variable device is reasonable in design, simple in structure and suitable for a turbine single inlet turbocharged system.
Owner:SUZHOU INTI AUTOMOTIVE TECH CO LTD

All-around wheeled mobile robot with relative posture detection function

ActiveCN104590414APrevent affecting pose measurement accuracyConcise motion mode discriminant formulaVehiclesDrive wheelSimulation
The invention discloses an all-around wheeled mobile robot with a relative posture detection function. The all-around wheeled mobile robot is characterized in that a chassis is composed of four driving wheels and three driven wheels, each driving wheel can independently perform driving and steering, and through coordinated control, the robot moves flexibly. The chassis moves to drive the three driven wheels to rotate, and through measuring the combination rotation speed of the three omni-directional wheels, the changes of the relative posture of the robot can be detected. The mobile robot is compact in mechanical design structure, a platform has flexible movement performance, the increment of the movement posture of the platform can be automatically detected, and the robot can be stably driven on a complex road surface. Through additionally arranging a vehicle-mounted external sensor, the platform of the mobile robot can be used for performing environment detection, automatic positioning and navigation in the urban environment, and further can detect alien bodies on earth. Due to the combination design of a driven wheel system, low-cost posture detection information easy to calculate is provided for rapid intelligence of the mobile platform and robotization transformation of the mobile platform.
Owner:HEFEI UNIV OF TECH

Rotary gas valve control mechanism

The invention discloses a rotary gas valve control mechanism and belongs to the technical field of mechanical design. The rotary gas valve control mechanism comprises a gas compressor, an engine, a turbine, connecting pipes, a valve seat, a valve body, a rotary shaft, an accommodating cavity, a rotator and an elastic component, wherein the rotator is mounted in the accommodating cavity and is in sealed contact with the inner wall face of the accommodating cavity, the lower wall face of the rotator is connected with the lower wall face of the accommodating cavity through the elastic component, two ends of a first connecting pipe are communicated with gas inlets of an engine exhaust pipe and an accommodating chamber respectively, and two ends of a third connecting pipe are communicated with the engine exhaust pipe and the upper wall face of the accommodating cavity. When the engine exhaust pipe is high in pressure, the rotator drives the valve body to rotate clockwise, exhaust gas recirculation rate of the engine is large, and the engine is low in explosion pressure; and when the engine exhaust pipe is low in pressure, the rotator drives the valve body to rotate anticlockwise, the exhaust gas recirculation rate of the engine is small, and oil consumption of the engine is low. The rotary gas valve control mechanism is reasonable in design, simple in structure and applicable to an exhaust gas recirculation system of the supercharged engine.
Owner:SHANGHAI JIAO TONG UNIV

Traditional Chinese medicine pulse-taking sensor, traditional Chinese medicine pulse-taking diagnosis and treatment system and a health service platform

A traditional Chinese medicine pulse-taking sensor device comprises a pulse-taking array sensor, and the sensor array position is designed according to the gold standard of diagnosis of the portion above the wrist end, the wrist end, the processus styloideus radii, the elbow end and the portion below the elbow end.The traditional Chinese medicine pulse-taking sensor device comprises a difference closed-loop sampling system, a pulse-taking instrument, a traditional Chinese medicine pulse-taking diagnosis and treatment system and a traditional Chinese medicine pulse-taking system health service platform.The health service platform comprises a cloud storage and cloud processing platform, is used for conducting cloud storage on detection results, and matches later-period diseases and selecting treatment schemes by using cloud computing.Stability and repeatability of taking patient pulses are ensured through mechanical design, pulse data of a patient is collected more objectively and accurately through the difference closed-loop sampling system, traditional Chinese medicine resources are optimally configured through an Internet of Things implementing scheme, and the cognition degree of people to traditional Chinese medicine is improved.The 25-point array is set according to the portion above the wrist end, the wrist end, the processus styloideus radii, the elbow end and the portion below the elbow end, and array arranging space with a good diagnosis and treatment effect is obtained.
Owner:北京中科芯健医疗科技有限公司

Topological optimization design method for high-speed vertical machining centre long-span beam

The invention belongs to the technical field of mechanical design and relates to a topological optimization design method for a high-speed vertical machining centre long-span beam. The method is mainly for the topological optimization of the three-dimensional solid structure of the long-span beam. The method consists two parts of early basis analysis and topological optimization design; the early basis analysis is to grasp the static and dynamic properties of the original beam, find out the parts of relatively weak static and dynamic properties and perform structural topological optimization on the beam correspondingly; and in the later topological optimization design, based on the result of the basic analysis, the later structural topological optimization including two-dimensional topological optimization and three-dimensional topological optimization of the beam is performed according to the characteristics of the beam. In the topological optimization method, a density method is adopted, the volume fraction response is used as a constraint function, and the static strain energy response is used as a target function; and finally an innovative model is established again according to the results of the two-dimensional and three-dimensional topological optimization analysis. The structural topological optimization method has the advantages of improving the optimization efficiency, along with accurate and reliable optimized results.
Owner:DALIAN UNIV OF TECH
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