86results about How to "Bionic effect is good" patented technology

The invention provides a bionic robot fish provided with a rising module and a tail module, relating to the bionic robot fish used underwater and aiming at solving the defects of the existing bionic robot fishes that the rising speed is low; rising characteristics are indistinct and adjusting the tail fin movement-diameter is inconvenient, etc. The other end of a screw (11) is fixedly connected with a piston (4) through a screw end closure (3), the piston (4) is arranged in a cylinder (1), and one end of a cylinder end closure (6) is fixedly connected with the cylinder (1); a straight-spur cone gearwheel (38) is arranged on a central shaft (43) and two ends of a central shaft (43) are rotationally connected with two sides of a box body (39), and two sets of sliding mechanism assemblies (84) are respectively arranged on a first disk (22) and a second disk (44) through a first eccentric shaft (25) and a second eccentric shaft (41). The bionic robot fish provided by the invention has a better rising characteristic and better bionic effect and can easily realize the adjusting to the tail fin movement-diameter of the robot fish so as to lead the swaying of the fish body to be rare and the moving stability to be better.

The invention discloses a portable and wearable upper limb exoskeleton rehabilitation training device. The portable and wearable upper limb exoskeleton rehabilitation training device is characterized by comprising a back module, two shoulder modules, two elbow modules and a bearing mechanism, wherein the back module is used for bearing a control system and a battery power component and used for achieving the bearing function; the two shoulder modules are arranged on the left side and the right side of the back module; the two elbow modules are connected with the two shoulder modules; the bearing mechanism is arranged on the back module and used for achieving the bearing function. By means of the portable and wearable upper limb exoskeleton rehabilitation training device, the structure can be effectively simplified, the weight can be reduced, the size can be reduced, the battery life can be prolonged, portability of the device is enhanced, and the effect of assisting a patient with a damaged upper limb movement function in accepting rehabilitation training is guaranteed; meanwhile, due to the modular design, the patient can choose to wear the device with the shoulders or the whole arm module for certain life assisting, and the device has wider practicality.

The bionic machine fish with shape memory alloy wire for swinging forward is one kind of robot. The bionic machine fish includes one rigid head, and one propelling tail fin mechanism comprising one tail and at least one swinging joint. Each of the swinging joint includes one elastic sheet, shape memory alloy wires fixed on two sides of the elastic sheet, and one elastic covering. Two adjacent swinging joints are connected through a base plate, and so do the rigid head and the first swinging joint. The present invention has the advantages one small size, simple structure, good bionic effect, no noise and convenient operation.

The invention discloses a tissue engineering fiber bundle structure body and a preparation method thereof. The invention provides a method A or B for preparing hydrogel fiber filaments containing cellular components. The method A comprises the following steps: 1) compositing a hydrogel material utilized as a matrix with cellular components to obtain a mixture containing cellular components; and 2) putting the mixture obtained in the step 1) into crosslinked fluid corresponding to the matrix to undergo crosslinking, thus obtaining the hydrogel fiber filaments containing cellular components. Experiments prove that the design can comprehensively meet the special bionic requirements of high-density cell composition, good vascularization development trend and achievement of directionally ordered structure in tissue engineering, so that the structure body is good in vascularization development prospect and can hopefully break through the development bottleneck that the tissue engineering can not become large and thick at present.

The invention provides a line drive flexible exoskeleton rehabilitation mechanical hand. The mechanical hand is characterized in that a hand unit is provided with four finger stalls, four traction lines which correspond to the four finger stalls and are used for pulling the corresponding finger stalls to perform bending motion, and a driving unit for driving the traction lines to move, wherein each finger stall is provided with a palm fixing block, two knuckle sleeves and a fingertip sleeve which are sequentially connected through elastic components, the palm fixing block, the two knuckle sleeves and the two sides of the fingertip sleeve are each provided with a first guiding hole, a second guiding hole and a third guiding hole respectively, the two ends of the traction lines sequentiallypenetrate through the third guiding holes, the second guiding holes and the first guiding holes in the two sides of the corresponding finger stalls and then are connected with the driving unit, when the traction lines are tensioned under the drive of the driving unit, the finger stalls are bent under pulling of the corresponding traction lines, and when the traction lines are not tensioned or loosened, the finger stalls are recovered to the stretching state under the effect of the elastic components.

The invention relates to the technical field of robots, particularly to a bionic masticatory robot for denture and food detection. The bionic masticatory robot consists of: an XY work platform, a mandibular mobile platform, a maxilary platform, a temporomandibular connecting piece, a drive control system, and two drive chains. The two drive chains are symmetrically arranged on both sides of the mandibular mobile platform, the mandibular mobile platform is connected above the XY work platform through a connecting rod, the temporomandibular connecting piece is connected to the mandibular mobile platform and the maxilary platform, the mandibular mobile platform and the maxilary platform are equipped with a denture model, the drive control system controls the driving chains to realize sagittal plane movement of the mandibular mobile platform and controls the XY work platform to realize horizontal plane movement of the mandibular mobile platform. The structure of the invention adopts the XY work platform to cooperate with left and right steering engines to work simultaneously, simulates the chewing movement locus of the horizontal plane and the sagittal plane, overcomes parallel mechanism, inverse kinematics, complex control, and enormous mechanism problems, and has the advantages of simple structure and simple control operation.

The invention provides a double-section flapping wing aircraft with deployable active folding wings, which comprises an aircraft body, two deployable active folding double-section wings symmetricallyarranged on two sides of the aircraft body and an empennage connected to the rear of the aircraft body, and the aircraft body comprises a frame and a transmission mechanism in transmission connectionwith the deployable active folding double-section wings; the transmission mechanism comprises a reduction gear set and two sets of double-shaking mechanisms in driving connection, the two sets of double-shaking mechanisms are symmetrically arranged on the left side and the right side of the central axis of the aircraft body, and the reduction gear set drives the two sets of double-shaking mechanisms to transmit power to flapping of the double-section wings. Flexible maneuverability and aerodynamic performance are both considered, and the overall performance of the double-section type wing aircraft is improved.

The invention relates to a bionic type artificial intervertebral disc and a forming method thereof. The bionic type artificial intervertebral disc is composed of an upper rigid end plate, a lower rigid end plate, an elastic nucleus pulposus arranged between the upper rigid end plate and the lower rigid end plate and a film body arranged at the outer side of the elastic nucleus pulposus; the elastic nucleus pulposus is constituted by adopting two or more polyurethane materials with different elasticity moduli, and the polyurethane materials with the different elasticity moduli are integrally connected. When the bionic type artificial intervertebral disc is molded, the center of the nucleus pulposus is firstly formed to connect the upper rigid end plate-polyurethane material workpiece and the lower rigid end plate-polyurethane material workpiece, and then the outer side is injected with the polyurethane materials. The bionic type artificial intervertebral disc is of an integral structure, and when the bionic type artificial intervertebral disc is loaded, through elastic deformation of the elastic nucleus pulposus, physiological activities of the artificial intervertebral disc in all directions are achieved.

The invention discloses a biomimetic mechanical jellyfish that is driven by shape memory alloy wires, relates to a biomimetic mechanical jellyfish and aims at solving the problems that the existing biomimetic mechanical jellyfishes only simulate jellyfish actions, do not cover devices such as a drive device and the like, and have complex structure and the biomimetic effect that is totally different with the action principle of real jellyfishes. The biomimetic mechanical jellyfish has following structure: an action unit (10) consists of the shape memory alloy wires (12), an elastic body (13), a coating skin (15) and a substrate (16), the substrate (16) and the shape memory alloy wires (12) are fixedly arranged on the elastic body (13), the action unit (10) is coated inside an umbrella-likesoft layer (11), the coating skin (15) covers outside the shape memory alloy wires (12), the substrate (16) and a sealing cover (3) are fixedly connected with a supporting body (2), a power source (7), a control device (5), a communication device (6) and a sinking and floating control device (9) are fixedly arranged on the supporting body (2), and the power source (7) provides electricity respectively to the control device (5), the communication device (6) and the shape memory alloy wires (12). The biomimetic mechanical jellyfish has simple structure, lightness, low production cost, large action range and good biomimetic effect.

The invention discloses a spike picking mechanism simulating manual spike picking and belongs to the technical field of agricultural machinery. The spike picking mechanism simulating manual spike picking overcomes the shortages that an existing roller-type spike picking device is complex in structure, heavy, large in power consumption, low in work efficiency and the like. The spike picking mechanism simulating manual spike picking comprises a machine frame, a chain transmission mechanism and a spike picking mechanism body. Spike picking arms are evenly and symmetrically distributed on two sets of operation chains. When a harvest travels, corn plants are continuously fed to a spike picking device. The rapidly-moving chains drive the spike picking arms to move downwards. When the spike picking arms touch spikes, the spike picking arms can simulate the action of manual spike picking and exert rapid downward force on the spikes so that the spikes can be picked. The spike picking mechanism simulating manual spike picking has the advantages of being good in bionic effect, small in power consumption, strong in adaptation, simple in structure, high in practicality, easy to popularize and the like.

The invention relates to a biped jumping robot with a variable pneumatic muscle driving force arm. The biped jumping robot with the variable pneumatic muscle driving force arm comprises a left leg, aright leg, a body, a muscle system and a spring system. Through coordinated motion between a pneumatic muscle, an elastic spring and so on, vertical jumping and oblique jumping motions can be very well realized. The biped jumping robot with the variable pneumatic muscle driving force arm has the advantages of simple and compact design structure, structural geometrical similarity, structural mass convenience, mechanism motion bio-imitability, flexibility and so on; and the mobility of the biped robot adapting to the unstructured environment can be improved.

The invention discloses a human-computer fusion knee joint rehabilitation robot. The robot comprises a thigh clamp, a shank clamp, a human knee joint, a first movement branch and a second movement branch. According to the knee joint rehabilitation robot, the knee joint rehabilitation effect is improved. The human-computer fusion knee joint rehabilitation robot improves the knee joint rehabilitation effect. The human-computer fusion knee joint rehabilitation robot improves the knee joint rehabilitation effect and achieves automatic compensation of instantaneous rotation center dislocation in flexion and extension movement of the knee joint of the human body, the knee joint is prevented against secondary injury, and the rehabilitation effect of the knee joint can be well enhanced. The human-computer fusion knee joint rehabilitation robot belongs to a completely decoupling parallel mechanism and is simple and convenient to control compared with a coupling parallel mechanism. The human-computer fusion knee joint rehabilitation robot belongs to an asymmetric parallel mechanism and has a large working space compared with a symmetric parallel mechanism.

The invention discloses a wearable biological merging lower limb rehabilitation robot. The wearable biological merging lower limb rehabilitation robot comprises a hip joint connecting device, knee joint connecting devices, ankle joint connecting devices and a weight reducing device, wherein the hip joint connecting device, the knee joint connecting devices and the ankle joint connecting devices are sequentially connected and worn on the lower limbs of a human body; and the weight reducing device is configured to be used for hanging the upper half body of the human body and the rehabilitation robot to alleviate the weight of the rehabilitation device applied to the human body. According to the wearable biological merging lower limb rehabilitation robot disclosed by the invention, the rehabilitation effect of lower limbs is improved; the rehabilitation devices at the knee joints adopt a biological merging idea, and the knee joints as a part of the mechanism are analyzed, so that the wearable biological merging lower limb rehabilitation robot is attached to the moving law of the knee joints of the human body, and the bionic performance is good; and besides, the rehabilitation devicesat the knee joints belong to parallel mechanisms which are completely coupled, and compared with a coupling parallel mechanism, the parallel mechanisms are simpler and more convenient to control.

The invention provides a bionic robot fish provided with a rising module and a tail module, relating to the bionic robot fish used underwater and aiming at solving the defects of the existing bionic robot fishes that the rising speed is low; rising characteristics are indistinct and adjusting the tail fin movement-diameter is inconvenient, etc. The other end of a screw (11) is fixedly connected with a piston (4) through a screw end closure (3), the piston (4) is arranged in a cylinder (1), and one end of a cylinder end closure (6) is fixedly connected with the cylinder (1); a straight-spur cone gearwheel (38) is arranged on a central shaft (43) and two ends of a central shaft (43) are rotationally connected with two sides of a box body (39), and two sets of sliding mechanism assemblies (84) are respectively arranged on a first disk (22) and a second disk (44) through a first eccentric shaft (25) and a second eccentric shaft (41). The bionic robot fish provided by the invention has a better rising characteristic and better bionic effect and can easily realize the adjusting to the tail fin movement-diameter of the robot fish so as to lead the swaying of the fish body to be rare and the moving stability to be better.

The invention provides a robojelly driven by axially parallel annular shape memory alloy, and relates to the bionic robojelly. The robojelly aims to solve the problems that an existing bionic robojelly is complex in structure, small in the motion range, and greatly different from the bionic push behavior of a real medusa. The robojelly comprises a power source module, a control module and a communication module and further comprises a flexible shell, a cylindrical abdominal cavity, a rotating body base, the control module, the communication module and a plurality of annular memory alloy drive components. Each annular shape memory alloy drive component is composed of a shape memory alloy wire and an open annular flexible pipe wrapping the shape memory alloy wire, and the annular memory alloy drive components are embedded in the circumferential side face of the flexible shall respectively. The cylindrical abdominal cavity is connected with the rotating body base in a detachable and sealed mode, and the power source module, the control module and the communication module are arranged in the cylindrical abdominal cavity. The robojelly driven by the axially parallel annular shape memory alloy is used for manufacturing bionic medusa machines.

The invention relates to a tooth-type corncob picking device with parallel longitudinal shift wheels and belongs to the technical field of agricultural machinery. The tooth-type corncob picking device is mounted on a corn harvester for picking corncobs. The tooth-type corncob picking device is composed of two corncob picking mechanisms symmetric to each other bilaterally. Each corncob picking mechanism comprises an input chain wheel, a shaft 1, a shaft 2, a corncob picking rod, a shaft 3, a shaft 4, a connecting rod, an eccentric longitudinal shift wheel 1, an eccentric longitudinal shift wheel 2, a ring wheel and an in-ring crank. During working, the harvester transmits power to the shafts 1 through the input chain wheels, the shafts 1 rotate to drive the eccentric longitudinal shift wheels 1 to rotate, so that the corncob picking rods can revolute and horizontally move parallelly to imitate a manual corncob picking way, and corncobs can be picked from top to bottom. The defects of complicated structure, heaviness, high power consumption, low work efficiency and the like of conventional roll-type corncob picking devices are overcome. The tooth-type corncob picking device provides a corncob picking mechanism imitating the manual corncob picking way and has the advantages of good imitation effect, low power consumption, simple structure and easy popularization and the like.

The invention relates to the field of soft robots, pneumatic control and bionics, in particular to a primate bionic robot driven by pneumatic muscles. The bionic robot comprises bionic grippers, an arm A, a driving joint stress wheel, an arm B, a joint driving steel wire rope, the joint driving pneumatic muscle A, the joint driving pneumatic muscle B, a pneumatic muscle mounting base, a shaft andbearings. The bionic grippers are connected with the arm A, the arm A and the arm B are connected through the shaft, the bearings sleeve the shaft, and therefore the rotation of the arm A and the armB is achieved. The driving joint stress wheel is fixed to the shaft end of the arm A, the other end of the arm B is fixed to the pneumatic muscle mounting base, one end of the joint driving pneumaticmuscle A and one end of the joint driving pneumatic muscle B are fixed to the pneumatic muscle mounting base and are parallel to the arm B, and the other end of the joint driving pneumatic muscle A and the other end of the joint driving pneumatic muscle B are connected through the joint driving steel wire rope. According to the robot, the limitation of a motor and a speed reducer is gotten rid of,and compared with traditional primate bionic robots, the self-weight of the robot is greatly reduced.

The invention discloses a multi-cell co-culture model based on fiber hydrogel and a preparation method of the model. The multi-cell co-culture model comprises a multi-layer oriented nanofiber membraneand GelMA hydrogel which is poured into the multi-layer oriented nanofiber membrane to form gel and is of a three-dimensional porous structure. The multi-layer oriented nanofiber membrane can be prepared by utilizing an electrostatic spinning technology. By using the multi-cell co-culture model, a cell is inoculated on the multi-layer directional nanofiber membrane, a second cell is inoculated onthe upper surface of a fiber hydrogel stent, and a third cell is inoculated below the fiber hydrogel stent, so that in-vitro co-culture of various cells is realized. The multi-cell co-culture model not only can realize co-culture of multiple cells, but also has good mechanical properties and high bionic properties, and can provide structures and properties of extracellular matrixes capable of simulating natural tissues for the multiple cultured cells.

The invention provides an air-drop flapping wing flying robot based on cambered surface wing design. The air-drop flapping wing flying robot comprises a fuselage, cambered surface wings, a tail wing,a control mechanism, an air-drop mechanism and a battery, wherein the cambered surface wings are symmetrically connected to two sides of the fuselage, flap under the driving of a driving steering engine, and provide lift force and thrust required by flight for the air-drop flapping wing flying robot; the tail wing is connected to the rear end of the fuselage; the control mechanism comprises a control panel, an inertia measurement unit and a global positioning system; the inertia measurement unit and the global positioning system are used for measuring the flight attitude and position of the air-drop flapping wing flying robot; and the control panel is used for receiving a control instruction of an upper computer platform, controlling the air-drop flapping wing flying robot to fly by fusingmeasurement data of the inertia measurement unit and the global positioning system, and controlling the air-drop mechanism to perform air drop. The air-drop flapping wing flying robot based on cambered surface wing design realizes an air-drop task for the flapping wing flying robot, and expands the application field of the flapping wing flying robot.

The invention relates to the field of walking robots, in particular to a multi-connecting rod bionic mechanical leg and a crawling robot. The multi-connecting rod bionic mechanical leg comprises a matrix, a driving part, a rocking rod, a first connecting rod, an intermediate four-connecting rod mechanism and an output four-connecting rod mechanism; the driving part comprises a steering engine anda steering engine plate which is mounted on an output shaft of the steering engine; the output four-connecting rod mechanism 6 is hinged to two rods of the intermediate four-connecting rod mechanism 5; the intermediate four-connecting rod mechanism drives the output four-connecting rod mechanism 6 to work; an output rod of the output four-connecting rod mechanism 6 extends out to achieve the movement in a specified trajectory. The matrix, the steering engine plate, the rocking rod and the first connecting rod form a crank-rocker mechanism; the matrix is a fixed machine frame; the steering engine plate is a crank; the intermediate four-connecting rod mechanism consists of the rocking rod, the first connecting rod, a second connecting rod and a folding plate; the output four-connecting rod mechanism consists of a section of the rocking rod, the folding plate, a third connecting rod and an output rod.

The invention relates to a penguin bionic robot. The penguin bionic robot comprises a trunk assembly, an arm assembly, a foot assembly and a head assembly. The trunk assembly comprises a trunk supporting frame, foot drive shafts, a power source, a drive motor and a bottom plate assembly, wherein the foot drive shafts, the power source and the drive motor are arranged on the trunk supporting frame, and the bottom plate assembly is arranged at the bottom of the trunk supporting frame. The foot assembly comprises foot supporting arms with the upper ends movably connected with the foot drive shafts through cranks. Foot supporting plates are arranged at the lower ends of the foot supporting arms. The trunk supporting frame is provided with a transverse positioning rod. The end portions of the transverse positioning rod are arranged in vertical sliding grooves of the foot supporting arms. When the foot supporting arms are driven by the foot drive shafts and the cranks, the track that the upper ends of the foot supporting arms rotate around the foot drive shafts is circular, and the track of the lower ends of the foot supporting arms is oval. The penguin bionic robot can simulate the walking gait of penguins, the bionic effect is good, and the robot can be applied to actual field meeting, and is high in practicability.

The invention discloses a visual positioning bionic snake mouth picking mechanism, an unmanned aerial vehicle harvesting device and an unmanned aerial vehicle harvesting method. The bionic snake mouthpicking mechanism comprises a snake mouth upper portion, a snake mouth lower portion and a snake neck, the snake mouth upper portion and the snake mouth lower portion are mainly used for picking, thesnake neck is mainly used for harvesting, and the bionic snake mouth picking mechanism is mounted on an unmanned aerial vehicle body through a support. The picking mechanism has excellent bionic effect, bionic shapes of the snake mouth upper portion and the snake mouth lower portion can be effectively applicable to fruit picking in the picking process, blades are arranged and simulate actions ofteeth, quick response of electromagnets and rotating motors is achieved, so that fruits can be rapidly separated from plants, the picking mechanism has excellent error-tolerant rate and correspondingresponse measures in aspects such as positioning picking deviation of the fruits and obstacles environment response, labor intensity is low, and damage to the fruits and injury to workers can be effectively avoided in the picking process.

The invention is applicable to the field of preparation and application of high-molecular polymers, and provides a preparation method of a DMAPS-AA-AAS (N,N-dimethyl(methylacryloyloxyethyl)aminopropanesulfonic acid inner salt-acrylic acid-sodium acrylate) copolymer. The preparation method comprises the following steps: adding a monomer DMAPS and a monomer AA into deionized water to obtain a mixed solution; preparing an initiator solution, adding the initiator into the mixed solution, heating the obtained solution to 65-85 DEG C, reacting for 4-6 hours, and cooling to room temperature to obtain a DMAPS-AA copolymer; and adding a 5-15 wt% sodium hydroxide solution into the DMAPS-AA copolymer to regulate the pH value, and stirring for 2-5 hours, thereby preparing the DMAPS-AA-AAS copolymer. The invention also provides a DMAPS-AA-AAS copolymer prepared by the preparation method. The invention also provides application of the DMAPS-AA-AAS copolymer. The DMAPS-AA-AAS copolymer provided by the invention opens up a new way for regulation of immunocompetence of macrophages. The preparation method provided by the invention is simple to operate and convenient for mass production.

The invention relates to the field of walking robots, in particular to a multi-connecting rod bionic mechanical leg and a crawling robot. The multi-connecting rod bionic mechanical leg comprises a matrix, a driving part, a rocking rod, a first connecting rod, an intermediate four-connecting rod mechanism and an output four-connecting rod mechanism; the driving part comprises a steering engine anda steering engine plate which is mounted on an output shaft of the steering engine; the output four-connecting rod mechanism 6 is hinged to two rods of the intermediate four-connecting rod mechanism 5; the intermediate four-connecting rod mechanism drives the output four-connecting rod mechanism 6 to work; an output rod of the output four-connecting rod mechanism 6 extends out to achieve the movement in a specified trajectory. The matrix, the steering engine plate, the rocking rod and the first connecting rod form a crank-rocker mechanism; the matrix is a fixed machine frame; the steering engine plate is a crank; the intermediate four-connecting rod mechanism consists of the rocking rod, the first connecting rod, a second connecting rod and a folding plate; the output four-connecting rod mechanism consists of a section of the rocking rod, the folding plate, a third connecting rod and an output rod.

The invention relates to a longitudinal poking wheel type corncob picking device which is a device used for being installed on a corn harvester for realizing a corncob picking function and belongs to the technical field of agricultural machinery. The corncob picking device comprises two groups of corncob picking mechanisms which are symmetrical on the left and the right and is characterized in that each group of corncob picking mechanism comprises poking wheel mechanisms, baffle plates and stem pulling rolls, and the poking wheel mechanisms and the stem pulling rolls are longitudinally arranged and respectively positioned at the upper ends and the lower ends of the baffle plates. When the corncob picking device works, the harvester transmits power to a transmission shaft, the transmission shaft rotates to drive poking wheel discs, poking teeth and poking fingers to rotate together, the stem pulling rolls convey corn plants downwards, and when corncobs are conveyed to the baffle plates, the poking wheel mechanisms pick the corncobs from top to bottom through the rotating poking fingers. The corncob picking device overcomes the defects of complex structure, great weight, large power consumption, low work efficiency and the like of a conventional roll type corncob picking device, provides a corncob picking mechanism simulating the operation of manually picking the corncobs, and has the advantages of simple structure, low cost, low power consumption, strong adaptability, and easiness for popularization and the like.

The invention belongs to the technical field of chromatographic separation, and discloses a bionic double-chain phospholipid film monolithic column, and a making method and an application thereof. The monolithic column is prepared through in-situ polymerization of 1-lauroyl-2-(11-methacrylamide-N-undecanoyl)-SN-glycerol-3-phosphorylcholine as a functional monomer in the presence of a cross-linking agent, a pore foaming agent and an initiator through a thermocatalytic reaction in a modified quartz capillary tube; and the bionic double-chain phospholipid film monolithic column has a continuous monolithic porous structure. The bionic double-chain phospholipid film monolithic column is prepared from 1-lauroyl-2-(11-methacrylamide-N-undecanoyl)-SN-glycerol-3-phosphorylcholine as the functional monomer, and the functional monomer is prepared from 1-lauroyl lysolecithin only through two-step chemical modification, so the preparation cost is reduced; and the monolithic column has good separation performance and good application prospect.

The invention discloses the technical field of fibers, and provides degradable flame-retardant polylactic acid elastic fiber and a preparation method thereof. The degradable flame-retardant polylactic acid elastic fiber is composed of the following components of polylactic acid, a modifier, a flame retardant, a plasticizer and enzymolysis corn starch; and the modifier is formed by mixing collagen, active peptide, chitosan and hydroxyapatite. The modifier used in the invention has relatively high biomimetic property, can significantly improve the biocompatibility, bioactivity and mechanical properties of a polylactic acid material, and improves the cell affinity of the polylactic acid, so that the prepared fiber has better physical properties and flame retardant effect; and the elasticity of the prepared fiber is improved, so that the fiber has better tensile strength and bending strength.

The invention relates to the technical field of robots, in particular to a bistable-state flexible capture robot imitating the dionaea muscipula leaf structure. The bistable-state flexible capture robot comprises a base, a microcontroller, a liquid source, capture mechanisms, proximity sensors and a power supply; the microcontroller, the liquid source and the power supply are arranged in the base;the power supply supplies power to the microcontroller and the liquid source; the microcontroller controls the liquid source to deliver liquid to the two groups of capture mechanisms or extract liquid out of the two groups of capture mechanisms simultaneously; the two groups of capture mechanisms are symmetrically and fixedly connected to the left end and the right end of the base; the liquid source communicates with the two groups of capture mechanisms; and the proximity sensors are installed on the two groups of capture mechanisms and electrically connected with the microcontroller. According to the bistable-state flexible capture robot imitating the dionaea muscipula leaf structure, the bistable-state flexible capture robot is designed on the basis of the bionics principle, the capturemechanisms are manufactured through a 3D printing technology, the structural design is reasonable, and the capture efficiency is high; and in addition, the structure is simple, the high flexibility is achieved, impact can be reduced, the capture reliability is improved, and multiple objects can be easily captured.

The invention relates to a penguin bionic robot. The penguin bionic robot comprises a trunk assembly, an arm assembly, a foot assembly and a head assembly. The trunk assembly comprises a trunk supporting frame, foot drive shafts, a power source, a drive motor and a bottom plate assembly, wherein the foot drive shafts, the power source and the drive motor are arranged on the trunk supporting frame, and the bottom plate assembly is arranged at the bottom of the trunk supporting frame. The foot assembly comprises foot supporting arms with the upper ends movably connected with the foot drive shafts through cranks. Foot supporting plates are arranged at the lower ends of the foot supporting arms. The trunk supporting frame is provided with a transverse positioning rod. The end portions of the transverse positioning rod are arranged in vertical sliding grooves of the foot supporting arms. When the foot supporting arms are driven by the foot drive shafts and the cranks, the track that the upper ends of the foot supporting arms rotate around the foot drive shafts is circular, and the track of the lower ends of the foot supporting arms is oval. The penguin bionic robot can simulate the walking gait of penguins, the bionic effect is good, and the robot can be applied to actual field meeting, and is high in practicability.

The invention relates to an upper body chest power-assist mechanism for a power-assist exoskeleton robot. The mechanism comprises a chest armor, a back armor, two axillary braces and two hydraulic cylinder system components, wherein the upper ends of the chest armor and the back armor are connected through elastic connecting bands, and the lower side faces of the chest armor and the back armor areconnected through the two axillary braces together; the back armor, the chest armor and the axillary braces integrally form a waistcoat shape to be worn on the upper body, and the joints of the backarmor, the chest armor and the axillary braces are connected through the elastic connecting bands; the two hydraulic cylinder system components are arranged on the front end face of the chest armor ina left-right symmetric mode, and the structures of the two hydraulic cylinder system components are completely same; each hydraulic cylinder system component comprises an upper hinging support, a hydraulic cylinder and a lower hinging support, and rod end ball bearings are arranged at the two ends of the hydraulic cylinder; and the two ends of the hydraulic cylinder are respectively connected with the upper hinging support and the lower hinging support through pin shafts. When a person lifts heavy things, the mechanism can provide chest supporting and the person can be easier to bend down andget up during lifting the heavy things.