228results about How to "Easy to introduce" patented technology

The invention discloses an HIL simulation method for an underground mining whole process, and relates to the field of automatic driving simulation testing, and the method comprises the steps: collecting point cloud data of an underground scene, and generating a simulation scene in a CARLA format; compiling and importing the generated simulation scene in the CARLA format through a Unreal engine, building a vehicle model and a laser radar sensor model in a Carla simulator, and collecting a point cloud data packet of the simulation scene; according to the point cloud data packet, mapping is carried out through an SLAM algorithm, and a point cloud map in a PCD format is generated; constructing a map of the simulation scene according to the PCD point cloud map; building a hardware-in-the-loop HIL simulation platform comprising an upper computer, a lower computer and an execution mechanism; and loading the constructed map of the simulation scene to the constructed hardware-in-the-loop HIL simulation platform, simulating a real well working condition scene through the simulation platform, and verifying a well working condition unmanned driving algorithm. In order to solve the problem that unmanned driving tests are difficult to comprehensively evaluate in the prior art, the coverage rate of the tests is increased through a hardware integrated full-process closed loop and the like.

The invention discloses a server cabinet for block chain transactions, which comprises a cabinet body, a port pipe is arranged on the lower side of the right end of the cabinet body, at least five fan blades are arranged in the port pipe, reciprocating screw rods are fixedly mounted at the ends, close to each other, of the fan blades, a motor is arranged at the right end of each reciprocating screw rod, and the motor is fixedly mounted at the right end of the port pipe. Ventilation through holes are formed in the upper side and the lower side of the right end of the through opening pipe correspondingly, sponge plates are arranged on the right sides of the ventilation through holes, pressing plate rods are arranged in the ventilation through holes and correspond to the sponge plates, movable frames are fixedly installed at the left ends of the pressing plate rods, and the upper ends and the lower ends of the movable frames are slidably connected with the through opening pipe. And when a pressing plate rod pushes a sponge plate to move rightwards, a connecting rod is driven to move rightwards and is matched with a bracket to compress a spring I, so that water in the sponge plate is conveniently squeezed out, and normal water absorption of the sponge plate is ensured.

The invention discloses a composite film material with lasting fragrance, a preparation method and application of the composite film material in sticky notes, and belongs to the technical field of composite film materials. The composite film material is composed of a PET layer, a bonding layer and a CPP layer; the PET layer comprises PET resin, composite filler, a coupling agent, an antioxidant, an ultraviolet light absorber, a heat stabilizer and a light stabilizer; the bonding layer is composed of a solvent type polyurethane adhesive; the CPP layer comprises PP resin, a modified filler, microcapsule essential oil, a coupling agent, an antioxidant, an ultraviolet light absorber, a heat stabilizer and a light stabilizer; the composite film material prepared by the invention not only has lasting fragrance, but also has strong binding force with a writable coating, high strength, good dimensional stability and high transparency.

The invention discloses a crack detection method based on an improved VGG network model, belongs to the technical field of crack detection, and aims to improve the precision and efficiency of image crack segmentation. The method comprises the following steps: acquiring a crack image with a label, converting the crack image into a grayscale image, and performing preprocessing by adopting fuzzy morphological filtering so as to reduce the influence of noise on crack detection; in a network structure, a receptive field is expanded through a cavity convolution module, so that the network can capture richer context information; meanwhile, the transmission and fusion capabilities of different level features are enhanced by using a residual structure; the path enhancement module further optimizes the feature path and improves the segmentation performance of the model; and finally, the image size is recovered through a deconvolution and up-sampling module, and crack analysis is realized. According to the invention, the accuracy of crack segmentation is effectively improved.

The invention provides a whole body blood vessel intervention simulation model, which comprises a trunk base and a temperature control water tank, and is characterized in that a lower limb base is arranged on one side of the trunk base; the skeleton assembly is arranged at the top of the trunk base, the skeleton assembly comprises a brain tissue model, a cervical vertebra, a trunk skeleton, upper limb skeletons and lower limb skeletons, the brain tissue model is arranged at the top of the trunk base, and the cervical vertebra is arranged on the front surface of the brain tissue model. The whole-body vascular intervention simulation model provided by the invention has the advantages that various parameters such as blood flow direction, blood temperature and vascular pulsation are simulated through the digital display temperature control water tank control device, so that the whole model achieves the effect of simulating the flowing effect of real blood in the heart of a human body, and real visual and tactile feelings in an operation process are obtained; and the doctor can learn better and faster.

The invention relates to the technical field of capacitor electrode material preparation, in particular to a sulfur-doped nickel-manganese layered double hydroxide electrode material, a preparation method and a capacitor, and the preparation method comprises the following steps: growing sulfur-doped nickel-manganese layered double hydroxide on foamed nickel by using a simple and feasible one-step hydrothermal method; oxygen vacancies are introduced into the electrode material through a safe and harmless chemical reduction method; wherein the layered double hydroxide has a relatively large specific surface area and rich active sites, so that permeation of electrolyte and diffusion of ions are facilitated; through combination of sulfur doping and oxygen vacancy, the electronic structure of the electrode material can be synergistically optimized, and the electrolyte adsorption capacity and the electronic conductivity of the electrode material are enhanced. The problems that in the prior art, due to the fact that transition metal layered double hydroxides are low in electric conductivity and poor in electron transmission efficiency, actual energy density and power density are low, and cycling stability is poor are solved.

The invention relates to an electromechanical service brake, an unlocking tool and an assembly. The electromechanical service brake (10) has an integrated electric parking brake (12) and comprises an electric motor (14) and a control unit (16). The parking brake (12) has a blocking element (46) which, in the locked state of the parking brake (12), mechanically blocks a transmission (50) of the electromechanical service brake (10). The electric motor (14) and the transmission (50) are surrounded by a housing (18) having a cutout (24) that allows the blocking element (46) to be manually actuated from the outside so that the blocking element (46) can be mechanically transitioned from the locked state to the open state from the outside. In the open state, the transmission (50) is free to move. The cut-out (24) is a non-circular structure having at least one axially extending guide groove (28) and / or at least one axially extending guide rib. The assembly includes an electromechanical service brake (10) and an unlocking tool (44).

The invention discloses an organosilicon pesticide wetting agent and a preparation process thereof, and relates to the technical field of wetting agents, the organosilicon pesticide wetting agent comprises the following raw material components: 50-150 parts of hydrogen-containing silicone oil, 50-150 parts of allyl polyether, 0.1-3 parts of a catalyst, and 30-80 parts of a nonionic surfactant, the invention relates to a polystyrolsulfon acid composition which comprises the following components in parts by weight: 50-150 parts of polystyrolsulfon acid, 1-10 parts of a thickening agent, 100-250 parts of glycerol, 25-55 parts of a first additive substance, 20-50 parts of a second additive substance and 5-15 parts of trace elements. The allyl polyether and the hydrogen-containing silicone oil are subjected to an addition reaction to generate polyether modified organic silicon with small molecular weight, the wettability of the wetting agent is improved, the modified organic silicon wetting agent is combined with the nonionic surfactant, the wettability is further improved, and the wetting effect is improved. And by grafting the branched chain on the hydrophobic group of the organosilicon compound wetting agent, the wetting effect of the wetting agent can be effectively improved, and the effective components of the pesticide can wet the surfaces of crops.

The contact unit and the disconnecting switch comprise a shell, a contact mechanism and two arc extinguishing systems, the contact mechanism and the two arc extinguishing systems are arranged in the shell, the contact mechanism is arranged between the two arc extinguishing systems in the first direction of the shell, each arc extinguishing system comprises an arc extinguishing chamber and a buffer area, the arc extinguishing chamber comprises an arc extinguishing cover, one end of the arc extinguishing cover is provided with an arc inlet, and the other end of the arc extinguishing cover is provided with an arc outlet. The arc inlet is communicated with the contact mechanism in the first direction of the shell, the buffer area and the arc extinguishing chamber are arranged in the second direction of the shell, the buffer area is connected with the exhaust hole of the arc extinguishing chamber, and the first direction is perpendicular to the second direction. The contact unit, the disconnecting switch, the contact mechanism and the arc extinguishing system are communicated in the first direction, arc can flow into the arc extinguishing system, the buffer area and the arc extinguishing cover are arranged in the second direction, the flowing path of the arc in the arc extinguishing cover is prolonged, arc extinguishing efficiency can be improved, meanwhile, the buffer area fully absorbs and cools tail gas generated after the arc is extinguished, and the service life of the arc extinguishing system is prolonged. And the use safety can be improved.

The invention discloses a hyperspectral generation method and device based on spatial super-division enhancement, and the method comprises the steps: carrying out the up-sampling of a preprocessed hyperspectral image through employing an interpolation technology, cutting a plurality of training blocks from the hyperspectral image after the up-sampling through employing a cutting technology, and generating a training sample; extracting three wave bands from each training block, and combining the three wave bands into an RGB image; constructing a generative model; wherein the generation model comprises a DSRNet model and a rectangular attention guiding network; setting a generation condition for the ultrahigh-resolution hyperspectral image; obtaining training samples as a training set; performing iterative training on the generative model by using the training set to obtain a final generative model; wherein the final generation model is used for responding to various generation conditions to generate a hyperspectral image meeting the generation conditions. The problem of how to realize high-quality, high-diversity and controllable hyperspectral image generation is solved.

The utility model discloses a dust falling device for a construction site, and particularly relates to the technical field of building construction dust falling, the dust falling device comprises a cart, the cart comprises a bottom plate, a push handle is fixedly connected to the rear side of the upper end of the bottom plate, universal wheels are fixedly connected to the four corners of the lower end of the bottom plate, and a height adjusting assembly is fixedly connected to the middle of the upper end of the bottom plate. A dust falling assembly is fixedly connected to the upper end of the height adjusting assembly, a water storage tank is fixedly connected to the rear side of the upper end of the bottom plate, and a water pump is fixedly connected to the upper end of the water storage tank. According to the dust falling device for the construction site, the height of the device can be adjusted according to the environment of the construction site through the arrangement of the height adjusting assembly, so that the dust falling device can be more accurately aligned with a dust generation source for dust falling, and the dust falling efficiency is improved; the spraying mechanism, the fan and the like are arranged, so that fine fog drops generated by a spraying part can be quickly blown away to a wider area, the fog drops can cover the whole dust falling area more uniformly, and the dust falling effect is improved.

The utility model belongs to the technical field of valve treatment, and particularly relates to a novel valve heat treatment furnace which comprises a furnace body. A partition plate is fixedly installed in the middle of an inner cavity of the furnace body, a quenching cavity is formed in the left side of the partition plate, a tempering cavity is formed in the right side of the partition plate, a lead screw is movably installed at the bottom of the inner cavity of the furnace body, and a movable block is installed on the surface of the lead screw in a threaded mode. The quenching cavity and the tempering cavity are formed in the furnace body, quenching and tempering can be carried out in the same space in the valve treatment process, the action space is greatly saved, the placement mechanism is controlled to move through the lead screw, the valve can be quenched and tempered for multiple times, and the optimal treatment effect is achieved; and the movable block is limited in the groove in the bottom, and the screw rod can drive the movable block to linearly move left and right in the rotating process, so that the air valve placed on the surface of the placing mechanism can pass through the quenching cavity and the tempering cavity for multiple times, and multiple quenching and tempering are achieved.

The invention discloses a preparation method and application of POSS-SH based on trimethoxysilane, and belongs to the technical field of organic-inorganic hybrid materials. The preparation method comprises the following steps: (1) adding (3-mercaptopropyl) trimethoxysilane and a methanol aqueous solution into a round-bottom flask, uniformly mixing, adjusting the pH value to 7 by using hydrochloric acid, and reacting at 30-40 DEG C for 2-3 hours to obtain a mixed solution A; (2) adding (3-aminopropyl) trimethoxysilane into the mixed solution A, uniformly mixing, adjusting the pH value to 6 by using hydrochloric acid, and reacting at 50-60 DEG C for 1-2 hours to obtain a mixed solution B; and (3) adding vinyltriethoxysilane into the mixed solution B, uniformly mixing, adjusting the pH value to 3-5 by using hydrochloric acid, reacting at 80-100 DEG C for 15-24 hours, filtering, washing, extracting and drying to obtain a POSS-SH product. The POSS material prepared by adopting a step-by-step reaction method of three silane raw materials is applied to deaggregation of insoluble organic drug molecules with amino groups / hydroxyl groups, so that the dispersity and the stability of the drug molecules are improved.

The utility model discloses a PE netted permeable pipe adapter which comprises a permeable pipe body, a conical connecting pipe, a threaded connecting pipe and a working adapter, the two ends of the permeable pipe body are connected with the conical connecting pipe and the threaded connecting pipe in a clamped mode respectively, and the middle of the threaded connecting pipe is in threaded connection with a connecting sleeve. The PE net-shaped permeable pipe adapter is characterized in that the permeable pipe body is fixedly connected with a connecting sleeve, one side, deviating from the permeable pipe body, of the connecting sleeve is fixedly connected with a working adapter, and one side, deviating from the connecting sleeve, of the working adapter is fixedly communicated with an adapter sleeve. Water can be conveniently introduced into the water permeable pipe body, the water permeable pipe body and the water permeable pipe body are tightly connected, use of the water permeable pipe body is facilitated, water in the water permeable pipe body can be conveniently led out through the conical connecting pipe, one end of the conical connecting pipe is a pointed end, installation can be better matched with the installation environment, the water permeable pipe body can work conveniently through the working sponge, and use is more convenient.

The utility model provides a dual-purpose anti-leakage enema and excrement collecting device. The dual-purpose anti-leakage enema and excrement collecting device comprises an enema bag, an infusion tube, an exhaust tube, an excrement collecting tube, an exhaust assembly and an anti-leakage assembly. The infusion tube is fixedly connected to the bottom of the enema liquid bag; the exhaust pipe is communicated with the outer wall of one end of the infusion pipe; the excrement collecting tube is communicated with the outer wall of the other end of the infusion tube; the exhaust assembly is arranged on the exhaust pipe; and the anti-leakage assembly is arranged on the infusion tube. According to the dual-purpose anti-leakage enema and excrement collecting device, through the structural design of the enema bag, the infusion tube, the exhaust tube, the excrement collecting tube, the exhaust assembly and the anti-leakage assembly, the enema function and the excrement collecting function are well combined, when enema is conducted on a patient suffering from abdominal distension, gas in the intestinal tract can be conveniently exhausted, leakage in the enema process is reduced, and the enema effect is improved. Leakage can be conveniently adsorbed, and the enema effect is good.

The present invention relates to the field of protection switches, and in particular to an intelligent emergency protection device for a power distribution cabinet, comprising a switch box, wherein an arc extinguishing chamber is separated by a partition in the switch box, an insulating box is arranged in the arc extinguishing chamber, a grid structure is arranged in the insulating box, the grid structure is composed of a fixed lower grid and a movable upper grid, the upper grid is mounted on a movable mounting plate, the movable mounting plate is restricted by a guide groove with an inclined groove, a movable elastic reset structure is arranged on the movable mounting plate, a movable bracket is installed on the partition for lifting and lowering, the movable bracket is located below an iron pressure piece in the switch box, a voltage-breaking piece is arranged on the movable bracket, a heat absorbing box is arranged on the insulating box, heat absorbing liquid is arranged in the heat absorbing box, a movable bottom support with a piston is arranged at the bottom of the heat absorbing box, and a shunt pipe is arranged at the top of the heat absorbing box; the emergency protection device of the present invention is provided with an intelligent arc extinguishing chamber structure, which can temporarily improve the arc extinguishing efficiency when a short circuit occurs and a power failure occurs.

The relay device with the movable butt joint function comprises a relay assembly, a first butt joint assembly and a second butt joint assembly, the relay assembly is provided with a first channel for a strapping tape to pass through, and the relay assembly is configured to clamp, fix or convey the strapping tape; the first butt-joint assembly is movably installed at the tape inlet end of the first channel, the second butt-joint assembly is movably installed at the tape feeding end of the first channel, the first butt-joint assembly and the second butt-joint assembly are each provided with a second channel, and the first butt-joint assembly and the second butt-joint assembly are both configured to be in butt joint with the corresponding tape penetrating groove assemblies. According to the relay device with the movable butt-joint function, the first butt-joint assembly and the second butt-joint assembly are movably installed at the two ends of the first channel, so that when the relay assembly is in butt joint with a strapping machine head or a corresponding belt penetrating groove assembly, strapping belts can be conveniently led into the first channel; and meanwhile, the moving stroke of the relay assembly can be reduced, and the packaging efficiency can be improved.

The utility model relates to an elasticizer false twister yarn dividing device which comprises a support, a plurality of yarn dividing sleeves are arranged on the support, a mounting plate is arranged below the yarn dividing sleeves and slidably arranged on the support, cleaning cylinders in one-to-one correspondence with the yarn dividing sleeves are arranged on the mounting plate, and the yarn dividing sleeves are slidably arranged in the cleaning cylinders. A cleaning piece used for cleaning the outer surface of the yarn separating sleeve is arranged in the cleaning cylinder, a driving assembly used for driving the cleaning cylinder to reciprocate along the outer surface of the yarn separating sleeve is arranged on the support, and the cleaning cylinder is driven by the driving assembly to reciprocate along the outer surface of the yarn separating sleeve. The outer surface of the yarn dividing sleeve makes contact with the cleaning piece in the cleaning cylinder, the cleaning piece cleans residual yarn flocks on the yarn dividing sleeve, and the whole cleaning process and the false twisting process of the elasticizer are synchronously carried out. The elasticizer has the effect of improving the working efficiency of the elasticizer.

The invention discloses a preparation method and application of nitrogen element modified humus, the preparation method of the nitrogen element modified humus comprises the following steps: S1: mixing humus with acid and an oxidizing agent for reaction to obtain carboxylated humus; s2, mixing and reacting the carboxylated humus obtained in the step S1 with an amine compound to obtain the nitrogen modified humus. According to the preparation method of the nitrogen modified humus provided by the invention, the humus is taken as a raw material, and the content of nitrogen in the humus is greatly increased through carboxylation reaction and amidation; meanwhile, the molecular weight of the modified humus is further reduced, the water solubility of the modified humus is improved, and absorption of plants is facilitated; the preparation method is simple and convenient in steps and suitable for being widely applied to actual production.

The utility model relates to a chloroacetic acid production device for processing glycine, which is characterized in that an interlayer is arranged in the outer wall of a chlorination kettle, the side end is connected with a liquid level meter a, and a discharge pipe is arranged on the lower surface; a radar liquid level instrument, a chlorine feeding pipe, an on-line component analyzer, an on-line thermometer, an on-line hydrometer, a condensation pipe, a catalyst filling pipe and an acetic acid feeding pipe are sequentially arranged on the upper surface, the lower end of the chlorine feeding pipe is connected with a gas distributor, and the condensation pipe is externally connected with a condenser; the catalyst filling pipe is externally connected with a catalyst metering tank; a liquid level meter b is connected to the side end of the kettle body, a discharging pipe is arranged on the lower surface of the kettle body, a water supplementing pipeline is connected to the right side of the upper surface of the kettle body, a liquid inlet pipe and an online moisture measuring device are arranged on the left side of the upper surface of the kettle body, and the liquid inlet pipe is communicated with the discharging pipe; the upper end of the stirrer is connected with a stirring motor, and the lower end is connected with a frame-type stirring paddle; the utility model has the advantages of reasonable structural design and good use effect.

The utility model discloses a paint pumping device for painting bamboo boards, which relates to the technical field of paint pumping equipment and comprises a U-shaped base, four universal wheels are rotatably connected to the bottom of the U-shaped base through bearings, two vertically arranged electric telescopic rods are fixedly mounted on the U-shaped base, and a carrier plate is fixedly mounted at the output ends of the two electric telescopic rods. And a fixed cylinder is fixed to the carrying plate in a penetrating mode, the bottom of the fixed cylinder fixedly communicates with a flared pipe, the bottom end of the flared pipe fixedly communicates with a paint inlet pipe, and a stirring assembly is installed on the fixed cylinder and used for stirring paint in the paint bucket. The spiral auger and the two stirring rods are driven by the driving motor to rotate, paint in the paint bucket is stirred by the two stirring rods, layering of the paint is prevented, the paint in the paint bucket can be better introduced into the paint inlet pipe through the spiral auger, the paint is more smoothly and orderly pumped out by the paint pump, and the paint is more uniform. And the painting use requirements of the bamboo boards are better met.

The invention discloses an aero-engine runner cleaning device and method.The cleaning device comprises a profiling supporting structure, a universal bearing, a water pipe and a support, the profiling supporting structure is installed at the lip position of an air inlet of an engine, the universal bearing is installed on the profiling supporting structure, one end of the water pipe penetrates through the universal bearing and is connected with a spray head, and the other end of the water pipe is connected with the support; and the bracket is arranged on the water pipe between the spray head and the universal bearing. When the cleaning device is used for cleaning the engine flow channel, the part including the spray head, the water pipe and the support extends into the engine air inlet channel, the profiling supporting structure is placed at an inlet of the engine air inlet channel, then the profiling supporting structure is fixed to the lip opening, and the engine flow channel can be cleaned after a water source is connected. The purpose of cleaning the flow channel of the engine in situ is achieved, part of performance of the engine can be rapidly recovered, operation is easy, and efficiency is high.

The invention provides an integrated sludge water treatment integrated device which comprises an integrated shell, and a pretreatment tank, a flocculation tank, a sludge treatment device and a clear water recovery device are sequentially distributed in the integrated shell from left to right; spiral sludge discharge structures are arranged at the bottoms of the pretreatment tank and the flocculation tank, the bottoms of the spiral sludge discharge structures are movably connected with the bottom of the inner wall of the integrated shell, the tops of the spiral sludge discharge structures penetrate into the pretreatment tank and the flocculation tank respectively, and the top of the pretreatment tank is detachably connected with a filter grating; a lifting structure is arranged on the surface of the spiral sludge discharging structure, and the bottom of the lifting structure is movably connected with the bottom of the inner wall of the integrated shell. By arranging the integrated shell, the pretreatment tank, the flocculation tank, the sludge treatment device, the clear water recovery device, the spiral sludge discharge structure, the filter grating, the lifting structure, the sludge storage box and the sludge conveying pipe, the problem that sludge is inconvenient to discharge from the existing pretreatment tank and flocculation tank is solved.

The freeze dryer vacuum pump comprises an end cover body, a pump body assembly and a motor assembly which are in transmission connection are arranged at the two ends of the end cover body respectively, an oil tank shell in sealing connection with the end cover body is further arranged on the end cover body, and the oil tank shell communicates with an inner cavity of the pump body assembly; an exhaust assembly connected with the oil tank shell in a sealed mode is arranged at the top of the oil tank shell and comprises a valve block capable of moving up and down. The end cover body is provided with a gas ballast assembly used for controlling the communication state of a flow channel in the end cover body and the pump body assembly, and the gas ballast assembly comprises a rotary knob body capable of rotating relative to the end cover body. The gas ballast assembly is matched with the exhaust assembly for exhausting, the gas ballast assembly is good in sealing performance and stable in structure, the sealing and filtering effects of the exhaust assembly are good, and the overall exhaust effect is greatly improved.

The utility model relates to the technical field of chemical production equipment, and discloses a high-boiling-point aromatic hydrocarbon fractionating tower device with a self-cleaning function, which comprises a shunting tower main body, cleaning and draining mechanisms are arranged at the upper end and the lower end of the shunting tower main body, the shunting tower main body comprises a tower body, and a first assembly hole is formed in the center of the top end of the tower body; a plurality of second assembly holes are formed in the periphery of the top end of the tower body at equal angles, and four drain outlets are formed in the periphery of the inner bottom wall of the tower body at equal angles. According to the utility model, the design of a spraying mechanism for optimizing cleaning liquid is adopted, the annular high-pressure spraying machine is arranged at the top end of the tower body, the plurality of high-pressure nozzles are annularly arranged at the bottom end of the tower body at equal angles, and the number and the distribution density of the nozzles are increased, so that multi-directional spraying is realized, the cleaning liquid can reach each corner in the tower, and the cleaning effect is enhanced; in addition, four sewage draining outlets are annularly formed in the bottom end of the tower body at equal angles, so that waste water and waste can be quickly discharged after cleaning, and convenience is achieved.

The invention provides a bendable cannula, a preparation method of the bendable cannula and a gastric bypass stent recovery device, and relates to the technical field of medical instruments. The bendable sleeve comprises a drum-shaped cap, a bent pipe, a handle and a handle cover, the drum-shaped cap and the handle are connected to the two ends of the bent pipe respectively, and the handle cover is detachably connected with the end, away from the bent pipe, of the handle; the drum-shaped cap comprises a drum-shaped front section and a cylindrical rear section, the middle of the drum-shaped front section protrudes, the two sides of the drum-shaped front section retract inwards, and the cylindrical rear section is connected with the bent pipe. The bent pipe sequentially comprises an inner layer, a first middle layer, a second middle layer and an outer layer from inside to outside, the first middle layer is one of a spring winding wire layer and a woven mesh layer, and the second middle layer is the other of the spring winding wire layer and the woven mesh layer. The bendable cannula can straightly extend from the oral cavity to be connected to the duodenum bulb part, a middle channel is constructed, the whole digestive tract is protected, the risk that barbs of a gastric bypass stent are scratched is avoided, and the safety and convenience in the foreign matter taking-out operation process are remarkably improved.

This invention relates to the field of inkjet printing technology. Ink cartridges have ink reservoirs that communicate with the external environment through vents, and ink leakage occurs when the external pressure changes significantly after ink filling. This invention provides an ink cartridge (37) comprising: a cartridge body (4); a cartridge cover (15); and a flexible member (101) between the cartridge cover (15) and an opening (38) of the cartridge body (4), wherein when the cartridge cover (15) is installed onto the cartridge body (4), a rib (23) on the cartridge cover (15) abuts against the flexible member (101), forming a sealed contact between them, thereby creating an expansion space (25) capable of accommodating all or most of the ink displaced from the ink reservoir. This invention also provides an inkjet printhead and an inkjet printer.

The invention discloses a yarn pulling mechanism for glass fiber reinforced plastic grating production. According to the yarn pulling machine, a bottom plate is fixedly connected to the upper surface of a yarn pulling machine base, a plurality of supporting columns are fixedly connected to the end, opposite to the yarn pulling machine base, of the bottom plate, a top plate is fixedly connected to the ends, opposite to the bottom plate, of the supporting columns, and a yarn separation sliding rod is arranged in a groove formed in the upper surface of the bottom plate; a plurality of sliding blocks are slidably connected to the outer side surface of the yarn separation sliding rod, yarn separation rods are fixedly connected to the upper surfaces of the sliding blocks, and a handle is fixedly connected to one side of each sliding block. An operator can hold the handle to slide the sliding block along the yarn separation sliding rod, and the yarn separation sliding rod can be driven to slide together through the sliding rods at the upper end and the lower end. In the yarn pulling process, multiple strands of yarn are stretched at the same time. The yarn separation rods capable of being adjusted in a sliding mode can separate different strands of yarns, and the yarns are prevented from being interwoven and wound together.

The utility model discloses a hardware fitting surface electrophoretic paint treatment hoisting device, relates to the technical field of hardware fitting processing, and aims to solve the technical problems that a current hoisting device is unstable in hoisting in the lifting process, and hardware fittings are easy to scatter, the hardware fitting surface electrophoretic paint treatment hoisting device comprises a fixing frame, and two guide rails are mounted on the side wall of the fixing frame; the upper end of the fixing frame is fixedly provided with two guide rails, the two guide rails are close to each other, a charging assembly is movably installed between the two guide rails, and the upper end of the fixing frame is fixedly provided with a lifting assembly connected with a radiotherapy assembly. And through the arrangement of the U-shaped rail on the guide rail, the loading assembly can be conveniently introduced into the electrophoresis cell, and the stability of hardware fitting hoisting is enhanced through cooperation of the structure. The hardware fitting hoisting device has the advantages of being stable in hardware fitting hoisting and stable in moving.

The utility model belongs to the technical field of grinding equipment, and particularly relates to a burr removing device for an injection molded part. Two groups of side polishing mechanisms are staggered up and down, are vertically distributed and form a three-dimensional polishing path channel together with a roller and a protective plate; and therefore, the device can conveniently and rapidly grind and polish burrs on the front side, the rear side, the left side and the right side of the injection molding part, the labor intensity of workers is reduced, and the product precision of the injection molding part is improved. Through the design of the concave-arc-shaped grinding wheel and the electric telescopic rod, the corner angle part of an injection molding part can be accurately treated, burrs and sharp edges can be removed, a product is smoother and safer, the electric telescopic rod can accurately control the position and height of the concave-arc-shaped grinding wheel, accurate control over the corner angle grinding process is achieved, and the automation degree is further improved.