76 results about "Large joint" patented technology

The invention relates to a tungsten / transition layer / steel composite material and a low-temperature and low-pressure active diffusion connection preparation method thereof, and belongs to the technical field of preparation of composite materials. Raw materials used for preparing the tungsten / transition layer / steel composite material comprise a tungsten substrate, an active metal Ti layer, a soft interface layer and a steel substrate. The method comprises the following steps: welding the soft interface layer and the steel substrate through a traditional welding process, sequentially superposing the obtained layer to the active metal Ti layer and the tungsten substrate, and carrying out vacuum diffusion connection to prepare a tungsten substrate / titanium layer / soft interface layer / steel substrate connecting piece which is the high-performance tungsten / steel composite material. The tensile strength of the composite material is greater than or equal to 386MPa. The composite material has a reasonably designed structure, and the problems of large joint residual stress, low strength and high requirements of welding conditions of present tungsten / steel connecting pieces are solved through matching of the structure with the method. The preparation method is simple, and is convenient for industrial application.

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.

Systems, devices, processors, and methods are described for joint detection of frequency and unique word (UW) location(s) for burst transmissions. Embodiments receive a wireless signal. Frequency detection is performed, resulting in multiple possible frequency correlation peaks. A subset of the correlation peaks are each used to perform trial frequency corrections, thereby generating a set of trial sequences. A UW correlation is performed on each of the trial sequences to generate a maximum UW correlation value for each trial sequence. The UW correlation value and the frequency correlation peak value are weighted and combined to generate a joint detection correlation value. The trial sequence having largest joint detection correlation value may indicate the correct transmission frequency and UW location. The jointly detected information may then be used to identify the frequency and start time of the burst transmission, which may then be demodulated, decoded, etc. to recover its payload data.

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 an upper limb rehabilitation training robot based on an omnidirectional moving platform. The upper limb rehabilitation training robot is characterized by comprising a trainingseat and a training table mechanism, wherein after a patient sits on the training seat, upper limbs of the patient perform wrist joint rehabilitation training, upper limb large joint rehabilitation training and upper limb joint composite rehabilitation training on a training table mechanism, and the training table mechanism further comprises a force sensing mechanism, a six-degree-of-freedom platform, an omnidirectional moving mechanism and a training table. Compared with the prior art, the upper limb rehabilitation training robot has the following effects of providing motion in various directions for an affected side space, identifying motion intention of a patient, and carry outing rehabilitation training aiming at all joints of the upper limbs. The upper limb rehabilitation training robot has high operation degree, corresponding tasks can be formulated according to different rehabilitation stages of patients, and rehabilitation training is performed on the basis of the invention.

This invention relates to one underwater operation device or communication sealed cable, which comprises Front and back two rapid joints ad the sealed thin and thick tubes and it's inside cable. The invention is characterized by the following: comprising one pair of variable rapid joint and its middle tube cable plug and socket; the radium rapid plug is covered by sealed tube to realize cable pass through tubes; the cable plug is connected to the socket; The above radium rapid plug is formed by small and large screw caps with small sealed mouth and large joint.

The invention relates to a multistage expansion pressure oil pipe. The multistage expansion pressure oil pipe comprises a large joint pipe, a large joint base, a large joint sleeve, a middle joint pipe, a large joint flange, a middle joint flange, a middle joint sleeve, a small joint pipe and a small joint sleeve, wherein the large joint base is arranged at the lower end of the large joint pipe, the large joint base is provided with a circulating hole communicated with the large joint pipe, the large joint sleeve is arranged at the upper end of the large joint pipe, the middle joint pipe is arranged in the large joint pipe through the large joint sleeve, the large joint flange is further arranged at the upper end of the large joint sleeve, the middle joint sleeve is arranged at the upper end of the middle joint pipe, the small joint pipe is arranged in the middle joint pipe through the middle joint sleeve, the middle joint flange is further arranged at the upper end of the middle joint sleeve, and the small joint sleeve is arranged at the upper end of the small joint pipe. Due to the scheme, the multistage expansion pressure oil pipe is simple in structure, when equipment connected with the small joint pipe moves conveniently, pressure oil can be normally transported, the using requirement is met, and high practical value is achieved.

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.

The invention relates to a composite connection method for a high-strength variable-diameter steel cable and aims to overcome the defects of complicated process, large strength loss, corrosiveness, large joint size, low flexibility and difficulty in winding of an existing high-strength variable-diameter steel cable connection method. A composite connection process method for strengthening equal-pitch plugging joints by using impregnated glass fiber strips / impregnated nylon fiber ropes is adopted. By single-wire equal-pitch grouped plugging, the strength loss of a steel cable junction is reduced; meanwhile, the plugging joints are wrapped, wound and tied in a sectional mode by using impregnated glass cloth / impregnated nylon ropes in a connection area, and the connection area can be strengthened and fixed after solidification to form a flexible composite joint of which the interior is twisted and wound by metal steel wires and the exterior is wrapped and reinforced by composite materials in a sectional mode. The composite connection method for the high-strength variable-diameter steel cable has the characteristics of high connection strength, reliable performance, small joint size, high flexibility and strong environment resistance.

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.

The invention belongs to the design technology of elastic bearing structures, and relates to a high-radial-stability elastic bearing. The high-radial-stability elastic bearing basically comprises a small joint, a plurality of first sphere center sphere surface rigid spacers, a plurality of first sphere center sphere surface rubber layers, a middle rigid transition part, a plurality of second sphere center sphere surface rigid spacers, a plurality of second sphere center sphere surface rubber layers and a large joint. The high-radial-stability elastic bearing has the advantages that through thedesign of the two groups of same sphere center sphere surface rigid spacers with different sphere centers, the stability of the radial load resistance of the spherical elastic bearing is improved, the strain energy density of the rubber layer, close to the side of the small joint, of the spherical elastic bearing is reduced, so that the overall service life of the spherical elastic bearing is greatly prolonged.

The invention relates to a flexible cross traction rehabilitation bed which comprises a trunk traction support, a head platform, an upper limb traction support, a trunk platform, a lower limb platform, a base and a main body supporting frame. The flexible cross traction rehabilitation bed can realize ten basic movements: trunk traction movement, head and neck flexion and extension movement, head and neck rotation movement, head and neck lateral flexion movement, cervical traction movement, upper limb traction movement, lower limb flexion and extension movement, lower limb rotation movement, lower limb lateral swing movement and lower limb traction movement. According to the flexible cross traction rehabilitation bed, cross traction of the human body can be achieved, adjustable dynamic traction force can be given to the spine of the human body in multiple directions and dimensions at the same time, the obvious pressure reduction effect on the spine and joints of the human body is achieved, damage repair under the gravity and impact force effects of the spine and the large joints is promoted, gravity damage factors can be effectively resisted, and spondylodynia and related symptoms caused by gravity injury factors are treated.

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.

The invention discloses a waterproof connection structure for a building deformation joint. The waterproof connection structure comprises concrete walls, stainless steel components, polyethylene foamfilling blocks, a middle-buried type water stop belt, a pitch waterproof roll layer and a waterproof elastic material connecting belt. The deformation joint is arranged at the middle portions of the concrete walls, and the pitch waterproof roll layer is wrapped in the deformation joint between the concrete walls. The parts, on the outer sides of the pitch waterproof roll layer, of the concrete walls are provided with the stainless steel components. Each stainless steel component comprises a stainless steel plate A and a stainless steel plate B. The polyethylene foam filling blocks, the middle-buried type water stop belt and the waterproof elastic material connecting belt are sequentially arranged between the stainless steel plates A and the stainless steel plates B from top to bottom. Thewaterproof performance and the anti-seepage performance of the deformation joint are improved, the sufficient telescopic allowance is achieved, material tension fracture damage is avoided or reduced,and the waterproof connection structure can be suitable for building deformation joints with the large joint width. The waterproof connection structure effectively solves the problems that water seepsand leaks from the deformation joint, a waterproof roll is in tension fracture, a waterproof layer of the roll is damaged, and water prevention is in failure.

Systems, devices, processors, and methods are described for joint detection of frequency and unique word (UW) location(s) for burst transmissions. Embodiments receive a wireless signal. Frequency detection is performed, resulting in multiple possible frequency correlation peaks. A subset of the correlation peaks are each used to perform trial frequency corrections, thereby generating a set of trial sequences. A UW correlation is performed on each of the trial sequences to generate a maximum UW correlation value for each trial sequence. The UW correlation value and the frequency correlation peak value are weighted and combined to generate a joint detection correlation value. The trial sequence having largest joint detection correlation value may indicate the correct transmission frequency and UW location. The jointly detected information may then be used to identify the frequency and start time of the burst transmission, which may then be demodulated, decoded, etc. to recover its payload data.

The invention discloses a clearance hole of a large joint of a ship. The clearance hole is preformed in the portion, corresponding to the large joint of the ship, of a board of the ship and comprisesa first side, a second side and a third side separately connected to the end portions of the first side and the second side, the first side and a member where the large joint is located coincide, so that the clearance hole is communicated with the large joint, and a soft toe structure is arranged at the junction between the third side and the member. The clearance hole is preformed in the portion,corresponding to the large joint of the ship, of the board of the ship, the soft toe structure is arranged at the junction between the third side and the member, and the stress concentration state ofthe end of the clearance hole can be effectively improved; the fatigue resistance capacity of the clearance hole is enhanced, the service life of the structure is prolonged, and the maintenance costof a ship owner is reduced.

The invention provides a water-cooled battery module, which comprises a battery module shell and a battery cell support, wherein the shell comprises an upper shell and a lower shell; an upper fastening installation part is arranged on the upper shell; the upper fastening installation part is connected to a lower fastening installation part through a connecting piece; a support piece is arranged in the upper shell; a plurality of battery support pieces are arranged on the support piece; a water cooling device is arranged in the upper shell; the water cooling device comprises a water inlet pipe, a water outlet pipe and a condensing coil; a battery cell support installation cavity is arranged in the lower shell; and a heating panel is arranged at the bottom of the lower shell. The water-cooled battery module has the advantages of high reliability, compact structure, strong flow, large joint area, strong heat exchange and strong cooling and has wide market prospect in the electric automobile market.

The embodiment of the invention relates to a method for estimating a channel. The method comprises: the probability value of each bit data of a corresponding sign mapped to each constellation point is solved; the probability value of each bit data multiplies to obtain a joint sign probability value; the constellation point corresponding to a sign with the largest joint sign probability value is selected as output; and when the joint sign probability value is more than the preset joint sign probability threshold value, a method for estimating a channel by solving pilot frequency is utilized toobtain the channel estimated value of the constellation point corresponding to the sign. The embodiment of the invention also relates to a device for estimating the channel; the device comprises a demodulator and an encoder; and the device also comprises a first channel estimator for solving the channel estimated value of the constellation point corresponding to the sign. The method and the device for estimating the channel realize the reduction of complexity of iterative channel estimation operation and increase reliability of iterative channel estimation, thereby shortening performance difference between actual channel estimation and ideal channel estimation.