750results about How to "Achieve shrinkage" patented technology

The invention relates to a human body simulation circulating system in the technical field of the detection of medical apparatuses, which comprises a heart simulating assembly, a heart control system, a sensing device, a data acquisition system, a peripheral simulating assembly, a cardiac ventricle auxiliary device and a controller, wherein the heart control system is connected with the heart simulating assembly; the heart simulating assembly and the peripheral simulating assembly are sequentially connected in series to form a heart simulating flow path system; the cardiac ventricle auxiliary device is connected in parallel with the heart simulating assembly to form a cardiac ventricle auxiliary flow path system; the sensing device is connected to a heart simulation and cardiac ventricle auxiliary combined flow path system; the input end of the data acquisition system is respectively connected with the sensing device and a computer to receive a pressure flux signal and a control command, and the output end of the data acquisition system is connected with the heart control system and the cardiac ventricle auxiliary device. The invention can detect the pressure and the flux of a plurality of positions in a flow path and is convenient for continuously optimizing the structure of the cardiac ventricle auxiliary device and a control system.

The invention discloses a stretchy type solar photovoltaic assembly and a photovoltaic system. The stretchy type solar photovoltaic assembly comprises a fixed support and a plurality of layers of solar cell panels, wherein the fixed support is fixed on a supporting face. The fixed support comprises track support bodies. Each track support body comprises a plurality of layers of tracks. The solar cell panels are installed on the tracks. At least one solar cell panel can be stretched out and drawn back in the stretching direction of the track where the solar cell panel is located. The photovoltaic system comprises a carrier and the stretchy type solar photovoltaic assembly which is installed on the top face of the carrier. According to the stretchy type solar photovoltaic assembly, when the solar cell panels are drawn back, the size of the stretchy type solar photovoltaic assembly is effectively controlled, and convenience is brought to carry; when the solar cell panels are stretched out, large-area solar cell panel installation is achieved in a limited supporting face area, the insolation area of the stretchy type solar photovoltaic assembly is effectively improved, and therefore the generated energy of the stretchy type solar photovoltaic assembly is improved.

The invention discloses a method for predicting ship fuel consumption according to sea conditions and manipulating conditions. The method for predicting the ship oil consumption comprises the steps of firstly acquiring a sample data set through data screening, data integration and normalized processing, then building a multivariate linear regression prediction model, defining a cost function by adopting a least shrinkage and selection operator (LASSO algorithm) based on the sample data set, performing variable shrinkage and parameter selection by combining cross validation and a least angle regression (LARS) algorithm, finally solving LASSO estimation by adopting an Osborne dual algorithm, and calculating to acquire the ship fuel consumption. The method provided by the invention for predicting the ship fuel consumption according to sea conditions and manipulating conditions can establish a function relation between the ship fuel consumption amount and each influence factor, solves a problem of multicollinearity in fuel consumption calculation, improves the ship fuel consumption calculation accuracy and has importance significance for energy conservation and emission reduction of traffic on the sea.

The invention aims to provide a hemisphere differential telescopic spherical robot. The hemisphere differential telescopic spherical robot comprises outer hemisphere shells, a driving part and a telescopic mechanism, wherein the driving part is of a double motor driving structure; left and right hemispheres are driven by a motor respectively; the movement functions such as advancing, retreating and pivot turning of the robot are realized by applying a hemisphere differential principle; a threaded transmission principle of a lead screw is applied by the telescopic mechanism of the robot to realize stretch of the two outer hemispheres; a double-cross four telescopic rod structural design is adopted by the telescopic mechanism of the robot. The double-cross four telescopic rod structural design is adopted by the telescopic mechanism, so that the maximum load capable of being born by the robot is increased during running of the robot, and the stability and the reliability of the internal structure during rolling advance of the robot are improved. The telescopic spherical robot has wide application, and corresponding technical application requirements for carrying out field tasks can be met by arranging different sensors.

The invention discloses a non-halogen fire resistant low-temperature shrinkable and heat-shrinkable pipe material and a preparation method thereof. The preparation method of the material comprises the following steps: using ethylene-vinylacetate copolymer as base material to add nitrogen and phosphorus series fire retardant, inorganic fire retardant and other additives, and performing mixing granulation, extrusion moulding, irradiation crosslinking, extension forming and other working procedures to obtain the finished product. By adopting the preparation method of the invention, the defects of the prior art such as high response temperature of heat-shrinkable pipe and poor fire resistance can be overcome; and the product has good performance, meets the requirements of environmental protection and is suitable for the cables and components in war industry, aviation and aerospace, civil high-end electrical and electronic equipment and the like.

In accordance with the present invention, there is provided a system for treating a patient with local hypertension, comprising a hypertension treatment device adapted to have at least one surface of the device attached to the blood flow passageway, wherein said surface comprising a cooling surface able to cool said passageway to restrict said passageway thereby reducing the blood pressure distal to said restriction. In accordance with a another aspect of the present invention, there is provided a system for treating a patient with aneurysm, comprising a aneurysm treatment device adapted to have at least one surface of the device attached to the blood flow passageway, wherein said surface comprising a cooling surface able to cool said passageway to restrict said passageway thereby treating said aneurysm. In accordance with a second aspect of the present invention, there is provided a system for treating a patient with hypotension, comprising a hypotension treatment device adapted to have at least one surface of the device attached to the blood flow passageway, wherein said surface comprising a heating surface able to heat said passageway to dilate said passageway thereby increasing the blood pressure distal to said restriction.

The invention discloses a multifunctional automatic elastic compartment automobile which comprises an automobile body, an automobile frame and a compartment which is elastic, wherein the elastic compartment comprises an elastic compartment framework connected to the automobile frame, an elastic bottom frame connected to the bottom of the elastic compartment framework, an elastic top cover connected to the top of the elastic compartment framework, a compartment wall connected to the periphery of the elastic compartment framework as well as an elastic mechanism which is connected to the elastic compartment framework, the elastic bottom frame and the elastic top cover; the elastic bottom frame is internally provided with a bottom surface clearance closed device; the elastic top cover is internally provided with a top cover clearance closed device; the compartment wall is provided with a compartment door; an elastic power drive system and a covering mechanism component are placed in the elastic compartment; and the elastic mechanism and the elastic power drive system are connected. The multifunctional automatic elastic compartment automobile provided by the invention is compact in structure, is novel and reasonable in design, has good driving stability, has a large internal space after the compartment unfolds, and has rapid elastic speed of the compartment, high accuracy, high practicability, and high popularization and application value.

The invention discloses a blood flow simulation device. The device is a closed-loop liquid flow system consisting of a liquid storage tank (1), a peristaltic pump (2), a simulation chamber (4) and a back pressure valve (13) which are sequentially connected end to end through a pipeline, and is characterized in that: the simulation chamber (4) consists of a simulation blood vessel (4-1) and at least one annular interlayer air bag (4-8) tightly sleeved outside the simulation blood vessel (4-1), wherein the two sides of an outer wall of an inner layer of each annular interlayer air bag (4-8) respectively extend to an inner wall of an outer layer to form a longitudinal interlayer (4-5) which divides an annular space in each annular interlayer air bag into two air chambers (4-2); each air chamber (4-2) is respectively connected with the outlet of an air feed pump (8) and the inlet of a vacuum pump (9) through a two-position two-way electromagnetic valve (6); and the simulation blood vessel(4-1) is made of an elastic material and the air bags (4-8) are made of thin film materials. The blood flow simulation device can simulate the blood flow condition when a blood vessel is expanded andcontracted and pressed.

An actively guiding robot for endoscopy is composed of a tactile sensation sensor in the front, a knuckle mechanism at its middle part whose main unit is a cylindrical rubber ring, a creeping flexible moving mechanism at its tail part, and an endoscope arranged in its central through hole. Gas is used as its power source. Said tactile sensation sensor can measure the action force between robot and inner surface of tract in human body to guide said knuckle and flexible moving mechanisms. Its advantages are reducing the pain of patient, low perforation possibility, and high efficiency.

The invention relates to an inclined rotating wing aircraft with telescopic wing membranes. The inclined rotating wing aircraft comprises an aircraft body, a center shaft, a main transmission mechanism, first to third power units, an outer side rod, a support rod, a main wing membrane, a flight controller, and first to third undercarriages. The inclined rotating wing aircraft disclosed by the invention is improved on the basis of the structure of the traditional four-wing aircraft, and an inclined rotating structure of an inclined rotating four-rotary wing aircraft and a wing membrane structure of a flapping wing aircraft are added. According to the inclined rotating wing aircraft, the structural state of the inclined rotating wing aircraft includes a ground sliding state, a four-rotary wing flying state and a high-altitude cruising state; when the inclined rotating wing aircraft is in a ground movement state, the undercarriages contact with the ground, the main wing membrane is open, and the forward movement, backward movement, left rotation movement, right rotation movement, climbing movement and downgrade movement of the aircraft are realized by regulating the speed of four rotary wings; the movement state of the aircraft on the ground is realized under the action of the undercarriages, and the movement state is impossible to realize by the inclined rotating four-rotary wing aircraft and the flapping wing aircraft; and the climbing movement and the downgrade movement can be realized without changing the state of the aircraft, so that the energy consumption is reduced, and the complexity of a control program is prevented.

The invention provides a large-scale website vulnerability scanning method and device and electronic equipment, and relates to the technical field of information security. The large-scale website vulnerability scanning method is applied to a physical machine or a virtual machine and comprises the steps that an image file used for containerized vulnerability scanning is built; on the basis of a publishing instruction of a user, the built image file is published into a local image repository; when the physical machine or the virtual machine obtain a vulnerability scanning instruction, an image file is called from the image repository to be subjected to containerized deployment; website vulnerability scanning is conducted on the basis of the deployed image file. According to the method, the image file built in advance is subjected to containerized deployment, and then website vulnerability scanning is conducted through the deployed image file; by means of the containerized deployment mode, one button extension and shrinking engine cluster can be achieved, manual and repetitive work is greatly reduced, and meanwhile the steps of the vulnerability scanning process are optimized, so thatthe resource utilization rate is increased, and the performance is improved.

The invention relates to a crane and a hydraulic control system of single-cylinder telescopic mechanism thereof, wherein the hydraulic control system of the single-cylinder telescopic mechanism comprises a cylinder pin cylinder, a telescopic cylinder, a first oil circuit and a second oil circuit and also comprises a main reversing valve, wherein the main reversing valve comprises an oil inlet in connection with high-pressure oil source, an oil return port in connection with an oil tank, a first oil port and a second oil port, wherein the first oil port and the second oil port of the main reversing valve are respectively connected to a rod cavity and a non-rod cavity of the telescopic cylinder through the first oil circuit and the second oil circuit; and a first reversing valve, wherein the first reversing valve comprises an oil inlet, an oil outlet and an oil return port; the oil inlet of the first reversing valve is connected with the first oil port of the main reversing valve through the first oil circuit; the oil outlet of the first reversing valve is connected with the cylinder pin cylinder; and the oil return port of the first reversing valve is connected with the oil tank. According to the invention, the hydraulic control system of the single-cylinder telescopic mechanism can use a telescopic cylinder to control a stretching arm and a retractor arm of the five-arm crane.

The invention provides a reflecting surface of a deployable antenna based on a shape memory polymer and a manufacturing method of a reflecting surface piece thereof, which relate to a reflecting surface of a deployable antenna and a manufacturing method of a reflecting surface piece. The invention solves the problems of large weight, large volume, complicated structure and unsteady deployment andcontraction of a traditional deployable antenna used for spaceflight. The deployable antenna is formed by splicing an annular power component, an annular reinforcement component, a radial reinforcement component and a reflecting film. The manufacturing method of the reflecting surface piece comprises the following steps of: (1) designing a mold; (2) preparing a shape memory polymer material; (3) coating a fibre reinforced material by using the shape memory polymer material; (4) forming an uncured fibre-reinforced shape memory polymer blank; (5) putting the closed mold into a heating box and heating; and (6) demolding to obtain a skeleton structure taking the fibre-reinforced shape memory polymer as the material. The invention can be used as the reflecting surface of the deployable antennain the field of the spaceflight.

The invention discloses an endoscope with an enlargeable tail end. The endoscope comprises an insertion part and an endoscope main body, wherein the insertion party comprises a shell, a working tract, a camera and a wire band; the working tract, the camera and the wire band are located in the shell; one end of the wire band is connected with the camera, and the other end of the wire band is connected with the endoscope main body after penetrating the shell; the camera is arranged at the tail end in the shell; a gap is formed at the tail end of the shell so that the working tract or the camera can extend out or retract from the gap; when the working tract or the camera extends out the gap, the working tract and the camera are in a parallel state. The endoscope with the enlargeable tail end can realize the enlarging and retracting of the tail end of the endoscope; the tail end of the endoscope is enlarged after passing through a narrow human body tract so that the working tract or the camera can extend out; the working tract and the camera are located at the parallel positions, so that the inner diameter of the working tract is obviously increased, the working tract can pass through more instruments to take out larger foreign matters.

The invention relates to a variable diameter screw propeller, which comprises propeller blades (3) and propeller hubs (4), and further comprises a rod connection mechanism (1), a drive mechanism (2), a propeller cap (5), a slide support mechanism (6) and a locking releasing mechanism (7), wherein the propeller cap (5) is arranged on the propeller hub (4), and provides installation spaces and top supports for the rod connection mechanism (1), the drive mechanism (2), the slide support mechanism (6) and the locking releasing mechanism (7), the drive mechanism (2) and the slide support mechanism (6) are fixed on the propeller hub (4), an output shaft of the drive mechanism (2) is connected with the rod connection mechanism (1), the propeller blades (3) are fixed on a guide outlet end of the rod connection mechanism (1), the bottom of the guide outlet end of the rod connection mechanism (1) is connected with the slide support mechanism (6), the slide support mechanism (6) provides support and guide for the rod connection mechanism (1), the drive mechanism (2) drives the rod connection mechanism (1) to drive the propeller blades (3) along the slide support mechanism (6) to stretch along a diameter direction of the screw propeller so as to change a diameter of the whole screw propeller disc, and the rod connection mechanism (1) is locked through the locking releasing mechanism (7) after the propeller blades (3) stretch in place.

The invention provides a low-frequency longitudinal vibration transducer used for oil well sound wave communication and a manufacturing method thereof. The low-frequency longitudinal vibration transducer comprises a radiation head (1) and at least two crystal stack modules (14). Each crystal stack module is formed by piling piezoelectric crystal plates and metals alternately. Every two adjacent crystal stack modules (14) are connected end to end and generate longitudinal vibration low-frequency sound waves after being connected with the positive pole and the negative pole of a power source. The radiation head (1) is fixed to the front end of the longitudinal vibration transducer and used for outputting the low-frequency sound waves generated through the crystal stack modules (14). According to the low-frequency longitudinal vibration transducer, the piezoelectric crystal plates and the metals are piled alternately, and thus radiating can be conducted effectively; and meanwhile, through the modular design, the operation simplicity and convenience and assembling reliability are greatly improved, and the problems of difficult machining and assembling and liable fracture during application caused by simplex long and thin prestressed screws are effectively solved.

The invention relates to the technical field of automobile tire maintenance equipment, in particular to a multifunctional tool for automobile tire leakage detection. A clamping assembly based on thread self-locking is adopted, so that contraction or external expansion is achieved, and the tool is suitable for supporting different automobile tires; a lifting assembly based on worm and gear matchingis adopted to adjust the height of the automobile tire, and the bottom can be conveniently immersed into the water tank for leakage detection; the adjusting assembly based on transmission is adoptedto drive the pressing assembly based on the cylindrical roller to work, the pressing plate moves downwards to extrude the automobile tire, whether bubbles exist or not is observed, operation is convenient and fast, and leakage detection efficiency is high. A cleaning assembly is further arranged, so that the bottom end of the automobile tire is immersed into the water tank and then pressed on thecleaning roller, on one hand, bottom support is provided, and on the other hand, when the automobile tire rotates, the cleaning roller cleans the surface of the automobile tire; and a drying assemblyis further arranged, the tire is dried after leakage detection, and workers can conveniently conduct gluing repair on the place where the automobile tire leaks.

The invention discloses a method and device for activating lipid and blood glucose reduction through gastrocnemius passive movement. The device is provided with a bottom plate, a leg fixing frame is fixed to the rear end of the bottom plate, leg fixing bands and an ankle joint fixing band are arranged on the leg fixing frame, pedals are hinged to connecting positions of the bottom plate and legs, one or more pedals are arranged, and a driving device for driving the pedals to ascend or descend is arranged between each pedal and the bottom plate and comprises an air bag located between each pedal and the bottom plate, the upper and lower surfaces of the air bags are connected with the pedals and the bottom plate respectively, the air bags are connected with gas pipes, and the gas pipes are connected with a pressure-adjustment automatic charging and discharging gas pump. Compared with the prior art, the device is simple in structure and convenient to use, contracting and loosening of the gastrocnemius can be achieved, the effect of the gastrocnemius pump can be achieved, backflow of lower limb blood can be promoted, deep venous thrombosis can be effectively prevented, and circulation of lower limb blood can be improved.

The invention discloses a method and a system for expanding and shrinking capacity of virtual network functions, which relate to the field of expanding and shrinking the capacity of the functions of the virtual network. The method comprises the following steps: collecting and analyzing historical service load data, predicting the service load in a future time period, and judging whether to expandor shrink the capacity according to the predicted result; according to the Chebyshev distance between any two virtual network functions VNFs, determining the degree of association between the VNFs, and dividing the VNFs requiring capacity expansion or shrinking into groups according to the degree of association to form a plurality of capacity expansion groups or capacity shrinking groups, and simultaneously expanding the capacity of the VNFs contained in each capacity expansion group or simultaneously shrinking the capacity of the VNFs contained in each capacity shrinking group. The method inthe invention can realize the capacity expansion and capacity shrinking of the virtual network functions from the perspective of global optimization.

The invention discloses a children stroller with an electric opening and closing function. When a stroller frame is folded, firstly, an unlocking transverse rod (38) is lifted to jack a back lower support assembly (9) and release the locking states of back foot pipes (4), then the unlocking transverse rod (38) is outwards rotated to drive an unlocking pull rod (37) to rotate, a first power source switch (26) is triggered, a motor (23) is started to drive a gear (21) to counterclockwise rotate, and an upper gear rack (22) and a lower gear rack (32) are driven to move to the opposite directions, so the stroller frame is automatically folded. After the stroller frame is folded, a handlebar pipe of the stroller frame is lifted, a second power source switch (25) is pressed, the starting motor drives a gear (21) to clockwise rotate, and the upper gear rack (22) and the lower gear rack (32) are driven to move to the opposite directions, so the stroller frame is automatically unfolded. The children stroller with electric opening and closing functions has the advantage that the stroller frame can be automatically opened and closed, so a user does not need to bend down, the waste of labor is avoided, and then the stroller frame can be opened and closed.

The invention relates to the technical field of polishing and grinding, in particular to polishing equipment. The polishing equipment comprises a conveyor belt, a grinding part, a dust sucking part and a motor. The conveyor belt comprises a conveying surface and a grinding layer, and the grinding layer is fixedly connected to the conveying surface. The grinding part comprises a fixed table, a grinding disc, a cleaning brush and a hydraulic cylinder. The grinding disc comprises a plate body, a blocking rod and an arc-shaped part. The dust sucking part comprises a fixed body and a dust sucking cylinder. A storing cavity is formed in the fixed body, and the dust sucking cylinder is located in the storing cavity. A piston is arranged in the dust sucking cylinder; a piston rod is fixed to the face, away from the conveyor belt, of the piston; a reset spring is fixed to the piston and fixedly connected with the inner wall of the end of the dust sucking cylinder; a dust sucking pipe and a dustoutlet pipe are arranged on the dust sucking cylinder; a strip-shaped box is arranged in the storing cavity; one side of the strip-shaped box communicates with the dust sucking pipe, and the other side of the strip-shaped box is provided with a scrap sucking hole; and an inserting opening is formed in the fixed body. According to the scheme, the polishing efficiency can be improved, and grindingscraps can further be cleared while polishing is conducted.

The invention discloses a mechanical locking and automatic ejection system of an electric spark-prevention socket. The mechanical locking and automatic ejection system comprises a balance control device and a pair of clamping mechanisms, wherein each clamping mechanism comprises a support body, a pair of clamping plates are hinged with an upper end part of the support body and are symmetrically arranged at two ends, a region between the pair of clamping plates is a clamping region, an electrode metal sheet is arranged on an end side surface, facing the clamping region, of each clamping plate, an end side surface, deviating from the clamping region, of each of the pair of the clamping plate is riveted with one end of each first connection rod, the other ends of the pair of first connection rods are respectively riveted with second connection rods, middle positions of the second connection rods are hinged with the support body, the other ends of the pair of second connection rods are respectively riveted with third connection rods, the balance control device comprises a shift rod, a traction rod and a balance rod, two ends of the balance rod are respectively arranged below a pair of circular annular guide heads, a traction end of the traction rod is hinged with a central position of the balance rod, a driving end of the traction rod is hinged with the bottom of the shift rod, a shift bulge is arranged at the top of the shift rod, a spring sleeves the shift rod, and a pair of contact switches are connected in a serial connection mode.