54results about How to "Good protective structure" patented technology

The invention provides an electric lift type storage device, in order to solve the problem of poor safety of an electric lift type device when being applied to civil environment. The electric lift type storage device comprises a top bin (1), a rope belt (8) retracted by a motor, a lifting bin (2) hung in the top bin (1), and a sensor and a bearing plate arranged at the bottom of the lifting bin (2), wherein, the bearing plate (3) is supported or drawn to trigger the sensor and interrupt the operation of the lifting bin, and the articulation position between the rope belt and the lifting bin is provided with a damper used for quickly eliminating the swinging of the box body. When a plurality of devices are arranged in parallel, a driving rod can be utilized to share one motor with an electromagnetic clutch.

The invention discloses a space docking error compensation mechanism of a carrier rocket connector system. The space docking error compensation mechanism comprises a valve panel, a connector panel, a suspension platform and two groups of spring guiding rods, wherein the valve panel is matched with a rocket body and is provided with a centering guide hole; one end of the connector panel is provided with a centering guide device; the suspension platform is matched with an actuator; the two groups of spring guiding rods are arranged between the connector panel and the suspension platform and are connected with the connector panel and the suspension platform through spherical hinges, the spring guiding rods of each group are of symmetrical arrangement, and the two groups of spring guiding rods are of rectangular-pyramid type suspended arrangement. According to the space docking error compensation mechanism, the actuator and the connector panel can be flexibly connected, small angle difference and position difference resulting from the swing and torsion of the rocket body are compensated during docking, following and shedding, the tracking error of the actuator is compensated, the stress of the rocket body is reduced, and the degree of automation of the connector system is increased.

The invention discloses a 3D printed wire rod with a functionalized skin-core structure and a preparation method thereof. The preparation method comprises the following steps: (1) coating a functionalauxiliary agent with a coupling agent; (2) subjecting the functional auxiliary agent coated with the coupling agent and a flexible polymer to twin-screw melt blending to obtain functional masterbatch; and (3) subjecting the functional masterbatch and PLA to single-screw blending extrusion. The 3D printed wire rod obtained in the invention has a skin-core structure; the flexible polymer is used asa skin layer, the PLA is used as a core layer, and the functional auxiliary agent is mainly dispersed in the skin layer and is immobilized on the surface of the device by fusion deposition melting (FDM); and the preparation method is simple and efficient, reduces the percolation threshold of the functional auxiliary agent and realizes multi-functionality of 3D printed devices.

The present invention discloses a fiber type osmotic pressure sensor with a fine-tuning device and automatic temperature compensation. The device comprises a protection shell and a permeable stone housing. The protection shell is equipped with a fiber fixed substrate. One end of the fiber fixed substrate is a rigid structure, and the other end of the fiber fixed substrate is an elastic structure. A temperature optical fiber is fixed at one end of the rigid structure, a pressure fiber grating is fixed at one end of the elastic structure, the connection part of the fiber fixed substrate and the pressure fiber grating is equipped with an elastic adjustment device, and the external part of the pressure fiber grating is the elastic film of the tail end of the fiber fixed substrate. The fiber type osmotic pressure sensor has the advantages of strong anti-interference ability, high sensitivity, high precision and stable performance, the automatic temperature compensation can be achieved, and the temperature and liquid pressure can be measured at the same time. The linear performance of the elastic film is good, good deformation can be generated under small pressure, and the sensitivity is excellent. The fiber type osmotic pressure sensor has a good protection structure and good waterproof and moisture-proof performance and can be applied to a harsh environment.

The invention discloses a servo motor with the encoder function and a position detection method of the servo motor with the encoder function. A tooth-shaped structure is arranged at the edge of a body of a rotor magnetic shoe of the servo motor, and when a rotor rotates, relative displacement is generated between the rotor magnetic shoe and Hall elements. The Hall elements include the first Hall element and the second Hall element, the first Hall element and the second Hall element right face the circumference track of movement of a magnetic grid of the rotor, and the included angle between the first Hall element and the second Hall element meets the rule of (n+ / -1 / 4)T, wherein the n is an integer, and the T represents one period of the magnetic grid. The method includes the steps that the rotor magnetic shoe rotates to generate an alternating magnetic field accordingly, the alternating magnetic field is respectively converted by the first Hall element and the second Hall element into alternating voltage signals which are output to a signal processing circuit, and the signal processing circuit converts the signals into position signals or pulse signals according to the waveform relation of the two collected signals and then outputs the signals to a servo driver. By means of the servo motor and the position detection method, the integration of the servo motor and an encoder is achieved, the structure is compact, the size is small, and meanwhile the structural strength and the reliability are high.

The invention discloses an optical fiber reinforcement meter, and belongs to the technical field of measurement. The optical fiber reinforcement meter comprises an optical fiber grate sensitive component, a sensing sleeve and reinforcement connecting rods, wherein the optical fiber grate sensitive component is fixed in the sensing sleeve; the reinforcement connecting rods are connected to the two ends of the sensing sleeve; the optical fiber grate sensitive component comprises an optical fiber grate, an elastomer base and a protection housing; the optical fiber grate is tensioned and fixed in the elastomer base; the elastomer base is packed in the protection housing; signal transmission fibers are arranged at two ends of the optical fiber grate, extend out of the two ends of the optical fiber grate sensitive component, and penetrate from the sensing sleeve. The optical fiber reinforcement meter is good in linearity, high in sensitivity, high in precision, and strong in electromagnetic interference resistance, has a relatively good protection structure, and is suitable for being used in severe environments.

The invention relates to a method for manufacturing a mounting box of a line control panel. The method includes steps of providing a galvanized plate; manufacturing the galvanized plate into a plurality of regular rectangular blocks by a plate shearing machine according to preset rules; curling edges of a first rectangular block and punching the first rectangular block to form an upper cover comprising a cover top and a cover edge integrally formed with the cover top; stretching a second rectangular block of the multiple rectangular blocks to form a bottom plate; bending a third rectangular block so that one end of the third rectangular block is connected with the other end of the third rectangular block and is snapped with the other end of the third rectangular block in a bent and hooked manner to form a hollow rectangular box body; and stamping and stretching a fourth rectangular block to form a support. The cover edge is fastened on the box body in a tightly combined mode, the edge of the box body is overlapped with the edge of the bottom plate and is fixedly curled from the outer portion of the box body to the inner portion of the box body, and the box body and the bottom plate form an accommodating cavity for accommodating the line control panel. One end of the support extends along the box body to reach the bottom plate and is fixed onto the bottom plate, and the other end of the support outwardly extends in the direction perpendicular to the box body.

The embodiment of the invention provides a dangerous rock mass composite protection structure and relates to the field of dangerous rock mass protection. The dangerous rock mass composite protection structure comprises a rock mass assembly and a protection net assembly. After a steel wire rope on the winch part is tightened and a first steel rope is stressed and tensioned, a second rope buckle at a second lantern ring is gradually unfastened till the second rope buckle relieves pressing of the first steel rope, then the steel wire rope on the winch part is tightened to drive the first steel rope to be tightened, meanwhile, after the tensioning force of the first steel rope is gradually increased and the first steel rope drives the protective net to be tensioned, the second rope buckle is screwed, a purpose of tensioning the tensioning steel rope with the smaller tensioning force is achieved, in the process, the first steel rope is in the tensioning state, the situation that all the tensioning force of the tensioning steel rope needs to be relieved firstly is reduced, the dangerous rock body protection structure in the related technology is effectively improved, and the tensioning force of the tensioning steel cable is inconvenient to increase under the condition that the tensioning force of the tensioning steel cable is not relieved.

The invention belongs to the technical field of extraction and purification of phellinus linteus polysaccharide, and provides a method for efficiently extracting and purifying the phellinus linteus polysaccharide through repeated compression and decompression. The method comprises the following steps: freezing, grinding and refining phellinus linteus fruit bodies, dispersing and swelling in deionized water, adding a surfactant to completely disperse the fine phellinus linteus to form an emulsion, and putting the emulsion into a reactor; on the premise that the stability of the emulsion is ensured, heating the emulsion to a certain temperature, and then repeatedly compressing and vacuumizing the emulsion to efficiently dissolve out the phellinus linteus polysaccharide; then destroying the emulsion by adding salt, centrifuging and collecting a supernatant to obtain the phellinus linteus polysaccharide. Compared with the conventional method, the method provided by the invention has the advantages as follows: the extracting and purifying efficiency is high, damage to the phellinus linteus polysaccharide is small, the activity of the phellinus linteus polysaccharide is kept better, and the purified phellinus linteus polysaccharide is applicable to a tumor treating medicine.

The invention discloses a freeze resistant sand fixing agent, and belongs to the technical field of sand fixing. A prepared water absorbing additive can improve the swelling performance and swelling dynamics of a composite material; absorbed water is stored in the channels, introduced carboxyl groups have a hydrophilic property, water contacting performance is enhanced, the water absorbing and water retaining performance of the sand fixing agent are improved; a microbial additive absorbs Ca<2+> from a surrounding sandy environment, then Ca<2+> combines with carbonate ions to generate mineral precipitates, as the stacking of the minerals, the density of the sandy layer is increased, the permeability is reduced, the absorbed water is sealed and stored, the cementing of sand is promoted, thesand is continuously fixed and protected; a freeze resistant additive can effectively reduce the size of pores, the transpiration rate is reduced, the water utilization rate is increased, water loss is reduced, water can be absorbed and utilized by plants, and the sand quality can be adjusted. The problems that in the prior art, the freeze resistant performance of a conventional sand fixing agentis bad and the sand fixing efficiency is bad are solved.

The invention provides a sports training-based device for quickly relieving shank muscles after sprint, relates to the technical field of sports training auxiliary equipment, and solves the problem that leg muscles cannot be vibrated and relaxed in a linkage manner while a relaxing structure reciprocates to rub and relax and the problem that when a foreign object collides with a sliding rod, the sliding rod is easily deformed, so that the normal sliding is influenced. The sports training-based device for quickly relieving shank muscles after sprint comprises a base and a protective tile, the base is fixedly connected with two main body seats through bolts, and each main body seat is fixedly connected with a placement structure through a bolt. The protective tile is of a concave structure,the outer wall of the protective tile is not in contact with the inner wall of a sliding hole B, and the gap distance between the outer wall of the protective tile and the inner wall of the sliding hole B is 0.5cm, so that normal sliding of the sliding seat is not affected after the protective tile is slightly deformed due to contact between a foreign object and the outer wall of the protective tile.

The invention provides a building heating, ventilating and air conditioning device utilizing solar energy, and relates to the field of heating and ventilating devices. The building heating, ventilating and air conditioning device solves the problems that comprehensive heating cannot be realized on the back surfaces of heat collecting pipes, lighting is not comprehensive enough, and heat preservation is difficult to realize due to the fact that the heat collecting pipes are not provided with corresponding protection structures; and pipeline connectors are mostly single-layer sealing structures,and poor in sealing performance. The building heating, ventilating and air conditioning device utilizing the solar energy comprises a placement box, wherein a solar pipe heat collector is placed inside the placement box. Firstly, light penetrates through a gap between the two heat collecting pipes on the solar pipe heat collector to make contact with a reflector inside the placement box, and lighting of the back surfaces of the heat collecting pipes on the solar pipe heat collector can be achieved through refraction of the reflector; and secondly, the placement box is of a shielding structureof the solar pipe collector so that cold air can be greatly prevented from blowing away heat collected by the heat collecting pipes on the solar pipe collector, and compared with an existing device,through the arrangement of the placement box, the heat preservation effect can further be achieved while the lighting efficiency can be improved.

The invention provides hyperelastic silk fibroin micro-nano hybrid fiber aerogel and a preparation method and application thereof.The preparation method includes the steps that stable silk fibroin micro-nano hybrid fiber dispersion liquid is obtained through non-alkali degumming, deep-eutectic solvent multi-scale stripping, suction filtration washing and ultrasonic dispersion; a faintly acid eutectic solvent system-urea / guanidine hydrochloride and choline chloride / lactic acid system is adopted in stripping; the method is beneficial to protecting the long chain and protein aggregation state structure of the silk, meanwhile, the weak acid system is closer to the isoelectric point of the silk, the silk has the charge neutralization characteristic, the contact area with the deep eutectic solvent system is increased, and the swelling degree is increased. The silk fibroin micro-nano hybrid fiber dispersion liquid is poured into a customized mold and then subjected to freeze-induced self-assembly and freeze-drying, and the silk fibroin micro-nano hybrid fiber aerogel is obtained and has excellent heat insulation and particle filtering performance.

The invention relates to the field of a small-spacing LED display screen. The invention relates to an LED lamp panel and a production process. According to one scheme of the LED lamp panel, the LED lamp panel comprises a circuit board, LED lamp beads and dry film layers, wherein the circuit board comprises a first line layer and an insulation layer; the LED lamp beads are in conductive connectionwith the first line layer; the dry film layers are fixed on the circuit board; the LED lamp beads and the dry film layers are positioned on the same side of the insulation layer; and a height by whichthe LED lamp beads protrude out of the insulation layer is smaller than a height by which the dry film layers protrude out of the insulation layer. The LED lamp panel solves the technical problem that in the prior art, LED lamp beads are easy to damage by collision in the carrying and assembling process, and achieves the technical effects of convenient and economic protection structure of the LEDlamp beads and capacity of effectively protecting the LED lamp beads.

The invention relates to a method for detecting and distinguishing preignition and carbon deposition of an engine based on ionic current. The method comprises the following steps that S1, an ionic current signal and a cylinder pressure signal of the engine under each working condition are collected; S2, a carbon deposition cycle and a preignition cycle of the engine are screened out by utilizing the ionic current signals, and the preignition cycle and a preignition moment are marked for the ionic current signals by utilizing the cylinder pressure signals; S3, a training data set is constructedby using the marked ionic current signals, and a recurrent neural network model is trained; and S4, the trained recurrent neural network model is transplanted to an engine ECU for real-time detectionof preignition and carbon deposition of the engine. Compared with the prior art, the method has the advantages of being higher in detection success rate, lower in misjudgment probability and the like.

The invention discloses a preparation method and application of marine fish oligopeptide capable of resisting fatigue and reducing uric acid. The preparation method of the marine fish oligopeptide provided by the invention comprises the following steps: (1) mincing pretreated marine fish meat into fish paste, adding distilled water into the fish paste, homogenizing, adjusting the pH value, carrying out autolysis enzymolysis, and adding exogenous protease to carry out synergistic enzymolysis, so as to obtain a zymolyte; and (2) carrying out enzyme deactivation and centrifugation on the zymolyte, taking supernate, decoloring the supernate, filtering through a ceramic membrane and an ultrafiltration membrane, concentrating and drying to obtain the marine fish oligopeptide. The marine fish peptide with the dual effects of resisting fatigue and reducing uric acid has the functions of improving the fatigue state and resisting hyperuricemia, and a new thought is provided for high-valued utilization of marine fishes and development of novel peptide products.

The invention provides dismantling and hoisting integrated equipment for piers and bearing platforms at the lower part of a bridge, relates to the field of bridge construction, and solves the problemsthat organic combination of pier dismantling and hoisting cannot be achieved at the same time, only the hoisting effect can be achieved usually, and explosives need to be thrown into manually drilledholes to burst the piers during dismantling; and after the piers are drilled and exploded into large stones, a grabbing structure of a hoisting device is poor in slip resistance, and the phenomenon that the stones fall off easily in the hoisting process. The dismantling and hoisting integrated equipment for the piers and the bearing platforms at the lower part of the bridge comprises a body seatand a rectangular plate, wherein a clamp plate is welded to the body seat. The head ends of two fixing rods are both of a conical structure, and the tail ends of the two fixing rods are both of a spherical structure; the tail ends of the fixing rods are contact with a cam; when the cam rotates along with a rotating shaft A, the fixing rods are in a reciprocating state, so that the vibration drilling of the fixing rods is achieved, and thus the vertical tension of the rotating shaft A can be reduced through the fixing rods.

The invention belongs to the technical field of submerged arc furnaces, and particularly relates to an automatic pressure relief system for a furnace cover of a submerged arc furnace. The automatic pressure relief system for the furnace cover of the submerged arc furnace aims at the problems that the function of an existing furnace cover pressure relief device is single and the protection effect is poor, the following scheme is provided at present. The automatic pressure relief system comprises a furnace cover body, wherein a sealing plate is fixedly connected to the upper surface of the furnace cover body, the upper surface of the sealing plate is provided with a protective cover, the inner surface of the sealing plate is movably connected to a pressure relief cover through a hinge, the upper surface of the pressure release cover is fixedly connected to a weight gain box, a pressure release cavity is formed inside the furnace cover body, and a locking plate is arranged at one end, away from the hinge, of the pressure release cover. The pressure relief system has the functions of automatic pressure relief and the automatic reset of the pressure relief cover, the trouble of manual shutdown operation is avoided, the working efficiency is improved, a multi-point temperature monitoring structure is added, so that people can know the temperature condition of furnace steam in the furnace cover in real time, meanwhile, the protective effect is good, and the safety of people can be guaranteed to the largest extent when needed.

The invention relates to a methane alarm apparatus protection structure which comprises a protection cover shell, a filling air bag piece and an alarm apparatus body so as to avoid sparks in the opening and closing process of the protection cover shell. The protective cover shell comprises a bearing box body, an observation door and a blade piece, the bearing box body is arranged on the outer side of the alarm instrument body, the blade piece is arranged on the inner side of the observation door and is rotationally connected with the observation door, and the observation door is rotationally connected with the bearing box body and is arranged on one side of the bearing box body. The blade piece is additionally arranged to be matched with the observation door, so that even if the alarm instrument is used underground, the situation that impurities in air are attached to the alarm instrument body and consequently the methane content cannot be checked can be effectively avoided, meanwhile, protection on the alarm instrument body is improved, and the service life of the alarm instrument body is effectively prolonged.

The invention relates to the technical field of window cleaning machines, in particular to a window cleaning machine with a safety protection structure, which comprises a window cleaning machine body, a protection rope and a balancing weight, the window cleaning machine body is mounted at one end of the protection rope, the balancing weight is mounted at the other end of the protection rope, a limiting guide seat is mounted on the protection rope, and the limiting guide seat comprises a limiting suction cup and a rope guide piece; compared with the prior art, a good protection structure is additionally arranged on the window cleaning machine, the window cleaning machine body can be effectively prevented from falling to the ground only by installing the limiting guide seat on a window frame or a wall surface, so that a good safety protection effect is achieved on the window cleaning machine body, the good buffering function is achieved, the buffering effect is good, the rope guide piece is prevented from being stressed excessively to cause falling of the limiting guiding base, the safety protection effect of the window cleaning machine body is further improved, installation is fast, and use is convenient.