14results about How to "Avoid stiffness" patented technology

This invention belongs to the field of medical device technology and discloses a foot pressure relief device for diabetic foot. It includes a base, a pressure relief plate and a motor connected to the base, and a foot pedal and a transmission assembly connected to the pressure relief plate. The transmission assembly includes a crank, a first connecting rod, and a sliding seat. The crank is fixedly connected to the output shaft of the motor, and the sliding seat is connected to the pressure relief plate. The two ends of the first connecting rod are respectively connected to the crank and the sliding seat. The sliding seat is connected to a foot rolling shaft and a second connecting rod, and the second connecting rod is connected to a foot massage roller. A buffer spring is provided between the pressure relief plate and the base. The foot pedal has a through groove, and the foot rolling shaft is connected to a foot massage roller. This invention utilizes the foot rolling shaft / foot massage roller and the foot massage roller to simultaneously perform rolling massage on the sole and instep of the foot. The periodic oscillation of the pressure relief plate causes the heel and toes to alternately rise, resulting in good pressure relief for the foot.

This invention relates to the field of medical auxiliary instruments, and more particularly to a hemodialysis auxiliary device for nephrology. This invention provides a hemodialysis auxiliary device for nephrology that can stably support the patient's arm on the side of the fistula and provides movable fixation for the catheter connected to the fistula puncture needle. It is flexible in use and can effectively prevent muscle spasms in the arm, thus assisting the patient in undergoing more comfortable hemodialysis treatment. The hemodialysis auxiliary device for nephrology includes a base plate, a screw, and a rotating handle; the screw is threaded to the base plate, and the rotating handle is located at the bottom end of the screw. This invention uses a round-headed top rod to limit the inclined ring, locking the height of the support ring plate and the fixed ring plate. Simultaneously, a toothed ring limits the gear, locking the swing angle of the support ring plate and the fixed ring plate. This allows the support ring plate to limit the patient's arm on the side of the fistula, assisting the patient in undergoing stable hemodialysis treatment.

The invention discloses a strong-sun-protection moisture-absorption quick-dry breathable dry elastic fabric and a preparation process thereof, and relates to the technical field of fabrics. The preparation method comprises the following steps: step 1, preparing polyester spandex core-spun yarns by taking polyester yarns with a sun-proof function as sheath yarns and spandex yarns as core yarns; tatting by taking the fabric as warp yarns and weft yarns to obtain a tatted fabric; 2, the woven fabric is sequentially subjected to low-temperature pretreatment with alkali liquor, first cation finishing liquid treatment, sulfonic gelatin finishing liquid treatment and second cation finishing liquid treatment; and performing high-temperature setting to obtain the strong-sun-protection moisture-absorption quick-drying breathable dry elastic fabric. In the application, the covering yarn with the sunscreen property is used as an internal sunscreen layer, and the finishing layer on the surface of the fabric is used as an external sunscreen layer, so that the high-strength ultraviolet protection property of the fabric is synergistically realized; meanwhile, the prepared fabric has excellent moisture absorption and quick drying properties and washing fastness.

The invention discloses an all-attitude five-axis turning and milling combined machine tool matched with a non-orthogonal main shaft, and belongs to the technical field of high-end numerical control machine tools. According to the technical scheme, the turning and milling machine comprises a machine body and a turning and milling workbench arranged on the machine body, and a sliding seat is movably arranged on the machine body; the X-axis transmission system is arranged on the lathe bed, is in driving connection with the sliding seat and is used for driving the sliding seat to move in the X-axis direction; the Z-axis transmission system is arranged on the sliding seat; the spindle box is in driving connection with the Z-axis transmission system and used for moving in the Z-axis direction. And the turning and milling main shaft is rotatably connected to the main shaft box. The invention has the following beneficial effects: through the combined design of a series of technical characteristics of the 45-degree non-orthogonal main shaft and the-30-180-degree all-attitude adjusting structure thereof, the long-standing technical problems of limited machining range, insufficient angle adjusting precision, low multi-process circulation efficiency and the like of the traditional orthogonal main shaft machine tool are solved; and the machining flexibility, the positioning precision, the whole machine rigidity and the process adaptability are all substantially improved.

The application discloses a kind of ocean towed cable system real-time digital twin construction method and system.The method comprises the following steps: constructing ALE-ANCF-based towed cable dynamics model, using the unit containing material coordinate freedom to describe the relative flow of node;Establish the system motion equation representing the dynamic winding and unwinding process of cable;Real-time acquisition of ship and winch data as boundary constraint input;Dimension reduction and real-time solution of motion equation are carried out by using semi-implicit numerical integration;In each time step of model solution, according to the length change of the first unit, dynamically execute node insertion or deletion to complete grid adaptive reconstruction, and extract the virtual tension at the cable guide to feedback control.The application breaks through the technical bottleneck that flexible cable is difficult to simulate continuously and in real time under variable length conditions, realizes high-precision prediction of towed cable state, and provides reliable decision support for winch active heave compensation control.

This invention relates to the field of textile fabric technology, specifically to a high-elasticity fiber fabric and its molding process. The fabric comprises a knitted base fabric woven from nylon-coated modified polyurethane elastic fiber-coated yarn. The modified polyurethane elastic fiber comprises a core elastic polyurethane phase and a surface hard-segment enriched phase. The surface phase is formed by a composite of polycarbonate diol-type high-hardness polyurethane prepolymer, hydrophilic fumed silica, hydrophobic fumed silica, and hydroxyalkyl-terminated polydimethylsiloxane. This invention significantly improves the interfacial stability between the core yarn and nylon without increasing fiber usage or fabric tightness, giving the fabric high elastic recovery rate, low dimensional change after washing, and excellent sweat and heat resistance, thus solving the problem of easy loosening and deformation in traditional high-elasticity fabrics.

This invention discloses a limb immobilization and rehabilitation training device after peripheral vascular intervention, comprising a frame, a lifting backrest, four wheels, a soft pad, two braking components, a twisting component, two massage components, and an ankle pump component. The four wheels are rotatably mounted on both sides of the frame in pairs. The lifting backrest is rotatably connected to the frame, and the soft pad is placed on the frame. Through the ankle pump component, the patient's foot is placed in the foot groove of the footplate, and an elastic band limits the foot's position. When the frame slides back and forth within the slide rail, it drives the footplate to slide. Simultaneously, under the fixation of the support, as the footplate slides, a ring makes a directional reciprocating motion along the slide groove. Under the action of the connecting rod and the support's resistance, the ring drives the footplate to complete a regular swinging motion, allowing the patient's foot to synchronously perform ankle joint flexion and extension movements with the footplate, achieving passive ankle pump training. This promotes distal lower limb blood circulation while preventing patients from being unable to perform ankle pump movements independently due to postoperative limb weakness.

The application discloses a video face slimming method and system based on key point partition control, and belongs to the field of computer vision and digital image processing. The method comprises the following steps: acquiring and analyzing video attribute information, initializing a video processing flow; reading image frames frame by frame and performing face key point detection; dividing a face into two sub-areas based on a data set; adaptively adjusting face slimming strength according to width difference; applying a local deformation algorithm using the adjusted parameters; and synchronously processing the processed image frames and original audio stream by time stamp to generate a final video output. The application adopts face key point detection and partition control technology, realizes fine face slimming of the face area, effectively solves the problem of audio-visual asynchronization in the video by using time stamp synchronous processing, can provide natural and personalized face beautification effect while ensuring real-time performance, and significantly improves user experience and video processing quality.

This invention discloses a device and control method for rehabilitation exercises after bone transport surgery, including a support frame, a sliding plate, a foot pedal assembly, and a telescopic device. The support frame has a groove and a receiving notch; the sliding plate is slidably disposed within the receiving notch; the foot pedal assembly includes a pedal and a fixing frame, and the actuating end of the first telescopic device is connected to the pedal via a second hinge to drive the pedal to rotate in the dorsiflexion direction and / or plantarflexion direction around the first hinge. The tilt sensor is used to measure the angle between the support plane of the pedal and the horizontal plane, enabling patients to perform ankle joint functional exercises in the early postoperative period with the affected limb completely weightless, avoiding ankle stiffness caused by prolonged bed rest or immobilization. This device has wide applicability and broad application prospects.

This utility model discloses a fistula restraint device specifically for hemodialysis patients, belonging to the technical field of fistula restraint devices. It includes an upper arm support strapped to the patient's upper arm and a lower arm support strapped to the patient's forearm. An extendable upper telescopic arm is fixed to the outer wall of the upper arm support, and an extendable lower telescopic arm is fixed to the outer wall of the lower arm support. A connecting member rotatably connects the upper and lower telescopic arms. The connecting member includes an upper connecting seat fixed to the bottom of the upper telescopic arm and a lower connecting seat fixed to the top of the lower arm support. A fixing plate is fixed to the front side of the upper connecting seat. This utility model uses two limiting rings to restrict the angle of the lower telescopic arm strapped to the forearm, allowing the patient's forearm to be restrained by the upper and lower telescopic arms while also allowing for a small range of rotation within the limitation of the limiting rings. This prevents the patient's arm from becoming stiff or numb due to prolonged immobility during hemodialysis, thus improving patient comfort during hemodialysis.

This invention relates to the field of magnetic levitation chiller technology and discloses an energy-saving variable frequency magnetic levitation chiller, including an evaporator, a condenser installed at the bottom of the evaporator, a connecting seat fixedly mounted at the end of the condenser, and a flow guiding component on the outer wall of the connecting seat. This energy-saving variable frequency magnetic levitation chiller recovers waste heat from the condenser cooling water to perform closed-loop constant temperature control on the magnetic levitation bearing, ensuring the bearing remains within its optimal operating temperature range. This avoids coil resistance drift, sensor temperature drift, and fluctuations in levitation stiffness under low-temperature conditions, improving the operational stability of the magnetic levitation bearing. Utilizing the residual heat of the heated cooling water for constant temperature treatment of the magnetic levitation bearing eliminates the need for additional electrical energy consumption for preheating and insulation. Building upon the inherent high efficiency and energy saving of magnetic levitation technology, this further reduces auxiliary energy consumption and improves overall energy efficiency.

The invention provides sports socks with functional partition silica gel layers, each sports sock comprises a main sock and an auxiliary sock, each of the main sock and the auxiliary sock comprises a sock body and a sock leg connected to the upper portion of the sock body, and each sock body comprises a sock body and a silica gel layer structure arranged at the bottom of the sock body. The silica gel layer structure comprises the following areas: a half sole thrust area which comprises a plurality of strip-shaped silica gel blocks which are arranged at the end parts of the first to fifth metatarsal bones along the direction perpendicular to the length direction of the metatarsal bones; the foot arch supporting area comprises a plurality of silica gel supporting belts which are longitudinally arranged along the inner side of the foot arch; the heel stabilizing area comprises a plurality of arc-shaped silica gel sections, and the arc-shaped silica gel sections surround to form a C-shaped semi-ring structure or an O-shaped full-ring structure and are arranged around the heel; and the toe root grasping area comprises a plurality of silica gel points which are arranged below the first metatarsophalangeal joint to the fifth metatarsophalangeal joint.

The invention discloses a gas turbine squeeze film damper rigidity measuring device, and relates to the technical field of performance testing of gas turbine rotor system matching parts. The method solves the problems that the measurement precision is restricted by the frequency measurement accuracy in the existing indirect measurement method for speculating the stiffness of the squeeze film damper by measuring the vibration frequency, and errors exist between the obtained comprehensive stiffness and the actually required stiffness of the rotor bearing position. A supporting tool fixes an extrusion oil film damper, a loading tool simulates the assembly relation between a rotor bearing and the extrusion oil film damper, one end of a lever is hinged to a hinge support, the other end of the lever bears the acting force of a probe of a loading sliding platform, and a loading guide rail restrains the movement direction of the loading sliding platform. The displacement measurement module carries out displacement detection corresponding to the bearing installation position. According to the invention, load amplification is realized through the lever principle, the actual rigidity of the squeeze film damper can be accurately obtained by adopting a direct loading and direct displacement measurement mode, and the installation and centering precision of a rotor is guaranteed.

This invention relates to the field of suspended bed technology, specifically to an intelligent suspended bed, comprising a support module, a bed body module at the top of the support module, a connecting frame, four support legs fixedly connected to the bottom of the connecting frame, a bed frame on the top of the connecting frame, and a connecting frame passing through the interior of the connecting frame on the bottom of the bed frame. The bed body module includes two connecting shells. In this invention, a sponge sleeve is fixedly connected to the side of a connecting rod. The sponge sleeve supports the elderly person lying on the cover, allowing the connecting ring to move between the limiting plate and the limiting frame, thereby causing the connecting rod to move cyclically. This allows the sponge sleeve to roll at the bottom of the cover, changing the support position for the back, avoiding prolonged pressure on the back that could cause back muscle stiffness, and the rolling and squeezing of the sponge sleeve massages the elderly person's back, which is beneficial for their recovery.