76 results about "Large joint" patented technology

The invention discloses an amphibious bionic turtle robot, which has two leg module unites with the same structure and 16 independent controllable joints, can move both on land and underwater through redundant actuation and has high environmental adaptability. In the on-land gait of the robot, hip joints, pitch joints and knee joints serve as actuation joints, and rotating joints are redundant; while in the underwater gait of the robot, the hip joints, the pitch joints and the rotating joints serve as the actuation joints, and the knee joints are redundant. The robot is also equipped with a buoyancy adjusting mechanism which can control the vehicle to float up and dive in water freely. The dynamic system and control system of the robot system are arranged in a sealed cabin of the vehicle body to be protected, and the waterproof sealing of key parts is realized by using a method of oil immersed sealing or sealing adhesive application at joints. The robot has the advantages of rich motion modes, high carrying capacity, large joint rotation angle, high mobility, high flexibility and the like. In different environments, every specific motion mode has high motion efficiency, so the robot can adapt to various medium environments.

The orthopedic procedures training simulator (100) is a mannequin (102) having an internal skeletal structure (104) for simulating orthopedic injuries. The interior skeletal structure (104) includes a plurality of skeletal structures, each movable between a first position simulating normal and healthy skeletal structure and a second position simulating an orthopedic injury. Motor tensionable cables joining larger joint structures allow for simulating muscular tension affecting the ability to reduce a dislocation of the joint. Force and positional sensors are disposed within the skeletal structures, and provide information to a computer system (700) to perform and monitor simulation. A computer program reads the sensors, and controls the motor tensionable cables to simulate orthopedic injuries and responses to applied corrective procedures and medications. The program generates pre-procedural x-ray images based on a desired simulation, and post-procedural x-ray images based on information obtained from the sensors both during and after the performance of a procedure.

The invention relates to an ontract replaceable joint of a large space service robot, in particular to a robot joint, which aims to solve the problems of poor joint control accuracy, large joint mass caused by using planetary gear transmission, small load self-weight ratio for a robot, and poor integration caused by arranging a control circuit outside a joint of the traditional large space service robot. The output end of a transmission shaft for a motor is connected with a pinion in a transmission way; the pinion is engaged with a bull gear; the bull gear is connected with a hollow shaft through a key in a transmission way; the hollow shaft is integrated with a harmonic speed reducer; a cylindrical hollow shell is arranged inside the hollow shaft; the tail of the cylindrical hollow shell is connected with a back cap of the joint; the harmonic speed reducer is connected with the small diameter end of a torque transducer which is arranged inside the output shell of the joint and is sleeved outside the cylindrical hollow shell; and the large diameter end of the torque transducer is connected with the output shell of the joint in a dismountable way. The invention is used for large space service robots.

The invention discloses a skin texture collection and identity recognition method and system. The skin texture collection and identity recognition method includes the steps that a skin texture image of a user is acquired; a quality weighted value of the skin texture image is determined; correction is performed on the skin texture image with a preset template image as a standard; the corrected skin texture image is compared with the template image, so that a skin texture comparison value is obtained; the quality weighted value multiplies the skin texture comparison value, so that a multiplied result is obtained; whether the multiplied result is larger than a first preset value or not is judged, and if yes, the identity of the user is determined to be legal. In the embodiment, due to the facts that minutiae do not need to be emphasized excessively, and skin texture and large joints are emphasized, the problem that login is rejected due to the lack of the minutiae is reduced.

The invention discloses an assembly device for pressure steel pipes. The assembly device comprises a fixed trolley, a movable trolley and a movable assembly trolley which are sequentially arranged on a rail; the fixed trolley is fixedly connected to the rail; the movably trolley and the movable assembly trolley are in sliding connection to the rail; the fixed trolley and the movable trolley are roll-welding trolleys; an assembly supporting mechanism and an operating platform are mounted on the movable assembly trolley; an assembly horizontal mechanism capable of horizontally moving on the assembly supporting mechanism and capable of being locked is arranged on the assembly supporting mechanism; the end part of the assembly horizontal mechanism is hinged with a circularity regulating stand column mechanism for regulating circularity of the pressure steel pipes; a steel pipe outer bracket is arranged below the circularity regulating stand column mechanism; a first hydraulic lifting jack is mounted on the steel pipe outer bracket; and the steel pipe outer bracket is positioned between the fixed trolley and the movable trolley. While used for assembling large joints of the pressure steel pipes, the assembly device can effectively reduce construction workers, can improve construction working efficiency, can improve site construction quality and can avoid damaging pressure steel pipe base metal by pressing and stacking.

The invention relates to a bionic mechanical prosthetic hand driven by a wrist joint, comprising a wrist module, a metacarpal joint module and a plurality of finger mechanisms. Each finger mechanism comprises a first knuckle, a second knuckle, a third knuckle, a facet joint knuckle connecting rod and a large joint knuckle connecting rod, wherein one end of the first knuckle is respectively connected with the facet joint knuckle connecting rod and the second knuckle, one end of the second knuckle is respectively connected with the large joint knuckle connecting rod and the third knuckle, one end of the third knuckle is connected with a through-going shaft, one end of the large joint knuckle connecting rod is connected with the driving rod of the wrist joint, the other end is connected with the facet joint knuckle connecting rod; and the wrist module comprises a wrist joint drive rod, a wrist connecting block and a wrist fixing ring, the wrist fixing ring fixed on the wrist is connected with the wrist connecting block rotatably through a connecting shaft. The prosthetic hand not only has the flexion and extension function of human fingers, and has grasping and kneading functions. The device is small and exquisite, and the appearance is close to the size of human fingers, so that the bionic mechanical prosthetic hand is suitable for patients with metacarpal amputation or high phalanx amputation to wear.

The invention discloses an upper limb rehabilitation training device capable of adjusting training tension, and relates to the technical field of rehabilitation training devices. The device comprises a shoulder joint movement mechanism, an upper arm rotating mechanism, an elbow joint flexion and extension mechanism, a forearm rotating mechanism and a wrist joint flexion and extension mechanism, wherein the shoulder joint movement mechanism is used for realizing outward swinging, inward retracting and flexion and extension movement; and the device further comprises a forearm tension adjusting mechanism which is used for providing counterforce and driving force, a massage mechanism which is used for massaging the big arm, a joint traction mechanism which is used for providing traction force for the wrist, and an upper arm rotating centering mechanism which is used for compensating the eccentricity of the big arm. The six-degree-of-freedom upper limb rehabilitation training device can realize six-degree-of-freedom upper limb rehabilitation training in various forms, and can effectively prevent the rehabilitation training device from causing secondary injury to a user; and in the rehabilitation training process, large arm muscular tension can be effectively relieved, fatigue is delayed, joints of a user can be stretched, joint gaps are increased, muscular tension is reduced, and pain and discomfort of a patient in the rehabilitation training process are effectively relieved.

The invention discloses a multi-modal target tracking method and device. The method includes a step of acquiring a first video frame included in a video, a step of acquiring a sparse coding dictionaryof a target to be tracked according to a first sampling parameter, a step of acquiring an observation set of candidate particles according to a second sampling parameter, a step of obtaining a difference of a first weight of each of first partial image blocks in different modes according to the first weights of first local image blocks of the candidate particles in each mode, a step of constructing a sparse representation model of the observation set according to the difference, a step of iterating the sparse representation model to obtain a second sparse reconstruction coefficient, a secondmodal weight and a second weight of the first local image block, a step of calculating a joint observation likelihood value of each candidate particle by using a joint observation likelihood value observation function according to the above three values, and a step of taking the candidate particle of a largest joint observation likelihood value as a tracking result of the target to be tracked. Byapplying the embodiment of the present invention, the target tracking accuracy and the accuracy of the target tracking can be improved.

The invention provides a metal plate laser cutting machine. The metal plate laser cutting machine comprises a base plate, support columns, positioning mechanisms and execution mechanisms; four supportcolumns are arranged at the upper end of the base plate; the positioning mechanisms are mounted at the upper ends of the support columns; and the positioning mechanisms are connected with the execution mechanisms. The metal plate laser cutting machine can solve the problems of incapability of adjusting the corner cutting angle according to the cutting demands in the cutting process, incapabilityof cutting inclined edges of some aslant-cut places needing assembly, capability of assembling the cut plates through edge grinding, higher workload, reduction of the utilization rate of the plates, nonuniform cutting angles of manual-grinded plates, and uneven and larger joints of the plates in the assembly process in traditional laser cutting.

The invention provides a quick pipe joint, which is used for quickly connecting a low-pressure compressed air pipeline. In order to realize conveying of compressed air, most conventional joints can only be used together with matched pipes, namely, a large-caliber pipe is matched with a large joint, a small-caliber pipe is matched with a small joint and the large and small joints cannot replace each other. A compressed air output joint is provided with a metal guide pipe; the tail end of the guide pipe, namely, a compressed air input direction, is provided with a rubber pipe; a compressed air input joint is provided with a pneumatic needle; and the pneumatic needle is pushed into a flattened rubber pipe, so that compressed air flows inwards from a hollow pneumatic needle and a communicating process is finished. Simultaneously, the compressed air output joint is provided with a shoulder port and the input joint is provided with a hook, so that the compressed air output joint and the input joint are prevented from falling.

The present embodiments focus on the privacy-utility tradeoff encountered by a user who wishes to release some public data to an analyst, which is correlated with his private data, in the hope of getting some utility. When multiple data are released to one or more analyst, we design privacy preserving mappings in a decentralized fashion. In particular, each privacy preserving mapping is designed to protect against the inference of private data from each of the released data separately. Decentralization simplifies the design, by breaking one large joint optimization problem with many variables into several smaller optimizations with fewer variables.

The invention provides an MCF equipment vacuum chamber-oriented remote conveying manipulator, which is manly formed by sequentially connecting a torque compensating manipulator joint, multiple space bearing modularized manipulator joints and one height-adjustable remote operation maintaining manipulator support; real-time signal transmission and feeding back are realized among all joints by an EtherCAT bus. The MCF equipment vacuum chamber-oriented remote conveying manipulator is designed by specially aiming at the small-inlet, long-channel and large-rotary space intelligent maintaining environment, and has the advantages of compact structure, light weight, large joint bearing torque, simple and concise wiring and the like, and particularly, the torque-compensated manipulator joints adopt the pulley blocks to perform the torque compensating action on the MCF equipment vacuum chamber-oriented remote conveying manipulator at the outer part of a long-channel closed system.

An umbrella stroller folding device related with a front handrail includes symmetrical structures arranged on the left side and the right side of an umbrella stroller. A stroller folding device on each side comprises an upper large joint, a lower large joint and a handrail seat, and further comprises a rotating seat, two pushing pins, an angular locking piece, a compression spring and the like. The umbrella stroller can be completely unfolded by sequentially lifting a handle rod and the front handrail and can be folded by pressing the handle rod frontward against a front foot pipe. A plurality of structure elements of the umbrella stroller folding device are arranged in a rivet connection body of a large joint rotating head and a handrail seat rotating head, so that the umbrella stroller folding device achieves good unification of function, appearance, reliability and operability.

The invention discloses an adjustable electric traction device used for rehabilitation of an orthopedics department. The device comprises a supporting bed body, a lying back cushion is arranged on oneside of the top face of the supporting bed body, a supporting frame is connected to the top of the supporting bed body, a linking leg and shoulder moving mechanism is arranged on the supporting frame, a waist moving mechanism is arranged in the center of the top face of the supporting bed body, an ankle moving mechanism is arranged on the other side of the top face of the supporting bed body, a backup plate is fixedly connected to the side face of the supporting bed body, a seat cushion is fixedly connected to the bottom end of the backup plate, elbow moving mechanisms are arranged on the twosides of the backup plate, and a neck moving mechanism is arranged at the top end of the surface of the backup plate. The device can perform traction treatment on ankle joints, elbow joints, neck joint and other small joints on the premise that the shoulders, the legs and other large joints of a patient can be moved, meanwhile, can make all the joints of the patient move together, is beneficial to improving the coordination of all body parts of the patient, can make the joints of the patient move progressively, and is better in using effect.

This invention relates to one underwater cable sealing structure, which Comprises soft tube rapid terminals and is characterized by the following: the one pair of varies radium joints between soft tubes are connected to be matched by sealed screw; Realizing thin and thick tubes two end sealing through inside tamper sealed mouth and screw. This invention realizes the sealing tube and its cable plug and socket; the above radium rapid plug is formed by small and large screw caps with small sealed mouth and large joint.

The invention discloses a method for welding and connecting circular seams on an over-sized spanning variable cross-section continuous steel box beam bridge. The method comprises the following steps of: S1. hoisting large segments, accomplishing the primary connection of temporary brackets of corresponding circular seams on the bridge surface, and accomplishing the rough matching on circular seams at joints of the large segments; S2. measuring the temperatures of top and bottom plates of a steel box beam when the temperature is relatively stable at night, and precisely adjusting the axes and the elevations of the large segments by using the temporary brackets when the temperature difference is less than or equal to 2 DEG C; S3. after the axes and the elevations are adjusted in place, precisely adjusting the gap between the circular seams; and S4. after the gap of the circular seams at the joints is adjusted, bolting and welding the circular seams. The method mainly comprises a large segment joint matching method, a high-strength connection sequence, a welding method, a processing method of special working conditions possibly happening in the joint matching process, and the like. According to the method, the technique is advanced, the practicability and the efficiency are realized, the operability is strong and popularization is convenient, the large joint bridge connection can be rapidly accomplished in a short time, and the security index in large bridge construction is effectively improved.