97results about How to "Increase touch points" patented technology

The invention belongs to the technical field of material preparation, and aims to solve the problems of interface separation and weak oxidation resistance under complex working conditions caused by insufficient interface bonding force of the existing carbon / carbon composite material. In order to achieve the purpose, the invention provides a carbon / carbon composite material and a preparation method thereof. The carbon / carbon composite material comprises the following components in percentage by mass: 40%-55% of polyacrylonitrile-based carbon fibers, 10%-25% of pitch-based carbon fibers, 8%-20% of nano silicon dioxide grafted carbon fibers, 8%-20% of biological pitch, 8%-15% of nano graphene modified phenolic resin, 3%-6% of silicon carbide whiskers, 2%-4% of zirconium boride nanoparticles, 2%-4% of graphitized carbon fibers and 1%-3% of a natural plant extract antioxidant. The carbon / carbon composite material provided by the invention can provide stable interface bonding force and remarkable oxidation resistance, so that the structural integrity and mechanical property stability of the material when bearing various complex stresses such as stretching, compression, bending, shearing and the like are guaranteed, and the application range of the material in the field of high-temperature oxidation resistance is widened.

The invention relates to the technical field of concrete, in particular to luminous pervious concrete and a preparation method thereof. The luminous permeable concrete is prepared from the following raw materials in parts by mass: 280-300 parts of cement, 870-900 parts of interval grading coarse aggregate, 70-80 parts of modified luminous powder, 30-40 parts of fly ash, 4-6 parts of a water reducing agent, 20-30 parts of a water repellent agent, 30-40 parts of epoxy resin, 3-5 parts of a silane coupling agent and 90-100 parts of water, and the interval grading coarse aggregate is prepared by mixing coarse aggregate with a small particle size of 4.95-9mm and coarse aggregate with a large particle size of 12.5-10mm according to a mass ratio of 1: 2; the surface of the modified luminescent powder is coated with silicon dioxide sol, and sodium borate is added for heat-resistant treatment. The light-emitting water-permeable concrete has compressive strength and water permeability, the light-emitting property is stable, and the hydrophobic and oleophobic corrosion resistance in the concrete is good.

The invention discloses an automatic steel backing feeding device and method based on automobile brake pad production, and relates to the technical field of steel backing machining and feeding. The automatic steel backing feeding device and method based on automobile brake pad production comprise a feeding unit, a suction cup fixed to the feeding unit and used for sucking and pressing a cold-roll steel sheet of the automobile brake pad steel backing, and a control box placed beside the feeding unit, used for controlling the feeding unit to operate and provided with an image recognition module. The feeding unit is provided with a detection assembly which is located under a suction cup and used for detecting the surface cleanliness of the cold-roll steel sheet, the detection assembly comprises a fixing plate which is fixed to the feeding unit and used for supporting the detection assembly, and a sliding sleeve is movably installed at the bottom of the fixing plate and used for sliding the detection assembly to the feeding unit. The degree that the edge of the suction cup is folded into a wave shape is controlled according to the amount of oil dirt and oil sludge, different suction conditions of different steel plate surfaces are dynamically adapted, and the operation reliability and stability are improved.

The invention discloses a wire hanging device suitable for unmanned aerial vehicle power pay-off, and relates to the technical field of unmanned aerial vehicle power pay-off, the wire hanging device comprises an unmanned aerial vehicle body and a support, and a pay-off assembly is arranged in the support. When the device is used, a first forward and reverse motor is started, a connecting rod and a long gear are driven to rotate, two toothed plates are driven to move relatively, a first wave clamp and a second wave clamp move relatively, two arc-shaped clamps move relatively, an electric wire is clamped, and double clamping and fixing of the electric wire are achieved. The wave-shaped characteristic of the first wave clamp and the second wave clamp can generate more contact points, the wave crests and the wave troughs can be tightly attached to the surface of the electric wire, the friction force to the electric wire is remarkably increased, the effects of buffering and dispersing external force can be achieved, and the possibility that the electric wire falls off is reduced. The rubber nails and the rubber gaskets effectively increase tightness and play a role in protection, and meanwhile the two sets of wire guide wheels limit the electric wire.

The invention discloses clamping equipment capable of clamping irregular boron carbide pellets, relates to the technical field of clamping equipment, and provides the following scheme that the clamping equipment comprises a mounting frame, a motor is arranged at the end of the mounting frame, the output end of the motor is connected with a screw rod, a sliding frame is arranged in the screw rod, and the sliding frame is connected with the motor; a fixing frame is installed at the bottom of the sliding frame, a guide groove is formed in the fixing frame, a telescopic mechanism is slidably connected into the guide groove, butt clamps are arranged on the opposite sides of the sliding frame, an angle iron frame is welded to the outer side of the top of the mounting frame, and a mounting hole is formed in the outer side of the angle iron frame. A mounting bolt penetrates through the middle part of the mounting hole; by arranging the telescopic mechanism, three groups of telescopic blocks are respectively adapted to the outer surfaces of the special-shaped boron carbide pellets, so that the clamping force can be more uniform, the clamping contact points are effectively increased, the irregular boron carbide pellets are clamped in a self-adaptive manner, and the clamping stability and flexibility are better ensured.

The invention provides a diaphragm with a gradient bulk density coating, a preparation method of the diaphragm, a battery and electric equipment, and relates to the technical field of diaphragms. The diaphragm with the gradient bulk density coating comprises a base material and a coating, and the coating is arranged on at least one side of the base material; the coating is prepared from the following raw materials: aluminum oxide, needle-like boehmite, a dispersing agent, an adhesive, an ether surfactant and water; the coating comprises multiple layers, the mass content of aluminum oxide is reduced layer by layer from the side adjacent to the base material to the side away from the base material, and the mass content of needle-like boehmite is increased layer by layer. And the obtained diaphragm with the gradient bulk density coating has high heat resistance, high wettability and high liquid retention rate.

The invention relates to a preparation method of yarn and velvet triboelectric fabric and a friction nanometer generator, and belongs to the technical field of intelligent textile materials. The friction nanometer generator comprises a positive friction unit and a negative friction unit; at least one of the positive friction unit and the negative friction unit comprises the velvet friction electric fabric. According to the invention, more technical possibilities can be provided for the development of flexible and diversified friction nano-generators, and the application prospects of the friction nano-generators in the fields of clothing, wearable equipment and the like are greatly expanded.

The main and fine grid integrated HJT silver paste comprises the following components in percentage by mass: 85-92% of silver powder, 2-6% of organic resin, 0.5-2% of a curing agent, 0-1% of a thixotropic agent, 0-1% of an epoxy catalyst, a silicone oil catalyst and 2-5% of an organic solvent. The silver powder at least comprises three kinds of powder with different particle sizes, wherein the ball powder and the ball-like powder with the D50 being 2-6 micrometers and the tap density being 5-6 g / mL account for 30%-50% in one kind, the ball powder and the ball-like powder with the D50 being 0.1-1 micrometer and the tap density being 3-5 g / mL account for 20%-40% in the second kind, and the sheet powder with the D50 being 0.5-2 micrometers and the tap density being 3-5 g / mL account for 10%-30% in the third kind.

The invention belongs to the technical field of SERS (Surface Enhanced Raman Scattering) substrate preparation, and particularly relates to an optimized preparation method of a high-stability composite nanostructure SERS substrate, which comprises the following steps: obtaining three-dimensional morphology characteristic data of a nano rough surface; establishing an overall physical model of the composite substrate by utilizing simulation software, setting material attributes and initial conditions of simulation, dividing grids, and carrying out solution calculation; processing parameters are selected, and a transition metal oxide TiO2 nano rough surface is prepared; the method comprises the following steps: combining an ultrasonic field with a laser ablation method, and compounding gold nanosphere particles on a transition metal oxide TiO2 nano rough surface, so as to obtain a composite nanostructure SERS (Surface Enhanced Raman Scattering) substrate; and evaluating the SERS activity through a Raman spectrum to complete the preparation of the substrate. According to the method, contact points of the gold nanospheres and the surface can be increased, so that a nano narrow slit structure on the substrate is increased, and the'hot spot 'density and the detection intensity of the SERS substrate are further improved.

The invention discloses a preparation method of a mask plate and the mask plate, and relates to the technical field of masks.The preparation method of the mask plate comprises the following steps that a silicon-based substrate is provided; forming a plurality of convex microstructures on the first surface of the silicon-based substrate outside the evaporation opening area; forming a metal mask covering the convex microstructures on the silicon-based substrate; and etching the silicon-based substrate to form an evaporation opening in a preset evaporation opening area of the silicon-based substrate. The contact area between the metal mask and the silicon-based substrate is increased through the convex microstructures, on one hand, more contact points can be provided, the total amount of physical attraction force between the metal mask and the silicon-based substrate is increased, so that the adhesive force is improved, on the other hand, the stress of the contact surface between the metal mask and the silicon-based substrate can be dispersed between the convex microstructures, and the contact area between the metal mask and the silicon-based substrate is increased. Local stress concentration is reduced, so that the metal mask is prevented from falling off from the silicon-based substrate, and the adhesive force and adhesive force between the metal mask and the silicon-based substrate are improved.

The preparation method comprises the following steps: crushing raw materials, carrying out dual-frequency ultrasonic extraction in combination with a solvent to obtain a high-activity and high-oxidation-resistance component, filtering through a micro-filtration membrane, mixing an extracting solution and crushed filter residue raw materials according to a ratio, sterilizing, adding modified microcrystalline cellulose and other auxiliary materials, and mixing, so as to obtain the anti-aging body-consolidating and life-prolonging pill. And refining honey and pelleting to prepare the life-prolonging pill with high stability, good pill quality and high oxidation resistance.

The utility model relates to humidity sensor technical field discloses a humidity sensor with high sensitivity, including insulating base, the insulating base is pasted with the lower humidity sensitive membrane for sucking the water resource of external environment, and the side that lower humidity sensitive membrane is away from insulating base is equipped with double -end electrode, simultaneously the side that double -end electrode is away from lower humidity sensitive membrane pastes with the upper humidity sensitive membrane for sucking the water resource of external environment. In the utility model, through setting up streamline groove on lower humidity sensitive membrane and upper humidity sensitive membrane, can increase the surface area on lower humidity sensitive membrane and upper humidity sensitive membrane, secondly increase more water molecule contact point, thereby improve the hygroscopic efficiency and humidity sensor's sensitivity, streamline groove can help guide air flow simultaneously, make the water vapor in the air more effectively contact different parts of the humidity sensing film, which helps to improve the overall hygroscopic humidity sensing speed and uniformity, ensure the accuracy of humidity sensor monitoring.

This utility model discloses a wooden door for use with a floor spring, including a front panel (1) and a back panel (2). Two vertical beams (3) are provided between the front panel (1) and the back panel (2). An upper horizontal beam (4) and a lower horizontal beam (5) are provided between the front panel (1) and the back panel (2). Multiple reinforcing beams (6) are provided between the front panel (1) and the back panel (2). A limiting beam (7) is provided on the inner side of one of the vertical beams (3). The upper and lower ends of the limiting beam (7) are fixed to the upper horizontal beam (4) and the lower horizontal beam (5) respectively. The front panel (1) and the back panel (2) are both fixed to the limiting beam (7). A tightly fitted iron square tube (8) is provided between the limiting beam (7) and the vertical beam (3). The bottom of the iron square tube (8) is provided with a connecting shaft (9) that passes through the lower horizontal beam (5). The bottom of the connecting shaft (9) is provided with a socket (10) that mates with the floor spring. This utility model has the advantage of a long service life.

The utility model discloses a cold rolling mill roller placing rack, the side wall of the right end of the placing rack is provided with a driving mechanism, the bottom end of the placing rack is provided with a bearing wheel, the outer wall of the driving mechanism is in threaded connection with two groups of moving plates, and the top ends of the moving plates are elastically connected with limiting blocks through reset springs. A limiting block is inserted into an upper limiting groove of a connecting pipe, the position of the connecting pipe can be kept unchanged, the inner wall of the moving plate penetrates through and is slidably connected with the connecting pipe, the top end of the connecting pipe is provided with a limiting groove, the right end of the connecting pipe is fixedly connected with a bearing frame, and the side wall of the right end of the placing frame is fixedly connected with a supporting block. A vertical opening is formed in the supporting block, the interior of the supporting block is in an annular groove shape, a sliding rod penetrates through the middle of the supporting block and is in sliding connection with the supporting block, a clamping block is fixedly connected to the outer wall of the sliding rod, a bottom plate is rotationally connected to the bottom end of the sliding rod, and a contact mechanism is arranged at the bottom end of the bottom plate.

The utility model discloses a forming type large-current split slot terminal. The forming type large-current split slot terminal comprises a connecting part, a fixing part, an elastic part and a plurality of contact parts which are integrally formed and connected in sequence, the elastic part comprises a plurality of elastic sheet strips, the rear end of each elastic sheet strip is integrally connected with the fixing part, a first through groove is formed between every two adjacent elastic sheet strips, each first through groove is formed by extrusion of an extrusion punch, and each first through groove is communicated with the insertion cavity; the first through groove and the second through groove are formed through extrusion of the extrusion punch, so that the elastic part and the contact parts are formed, contact points can be effectively increased, contact resistance is reduced, abrasion is uniform, the service life is longer, meanwhile, burrs and other phenomena do not exist in manufacturing and extrusion forming, a structure can be designed to avoid burrs, and the production efficiency is improved. And meanwhile, transition angles in various shapes such as fillets can be designed, the scraping risk is avoided, the material utilization rate is higher in the manufacturing process of the product structure, efficiency is greatly improved, and the ideal function effect is achieved.

The utility model discloses an end socket cutting device which comprises a roller way conveying line, a jacking mechanism and a cutting gun mechanism, the roller way conveying line comprises a feeding conveying table, a cutting working table and a discharging conveying table, the jacking mechanism comprises a top end socket and a plurality of supporting rods, the jacking mechanism is arranged in a lifting mode and a telescopic mode, and the cutting gun mechanism is arranged on the cutting working table. The sealing heads are jacked up through the lifting device to be separated from the roller way conveying line for edging cutting, the sealing heads of different sizes can be jacked up for edging and trepanning cutting through the telescopic arrangement of the supporting rods, edging and trepanning stations are integrated, the technological process line is shortened, and the production efficiency is improved. The end socket cutting device adopts an intelligent algorithm to automatically position the position of the end socket and the cutting position, is more automatic and intelligent, does not need manual work, and meets the requirements of industrial intellectualization and automation.

The utility model relates to connector technical field especially, it is a kind of efficient conductive type booster plug socket assembly, including plug mechanism and socket mechanism, the female terminal of being equipped with with contact unit in socket mechanism is connected, the contact unit includes two contact plates of symmetrical distribution, and multiple openings are passed through and are set up on the contact plate, and then make multiple contact pins be formed on contact plate, the middle region of contact pin is suddenly curved to two contact plate center direction, the male terminal of welding is inserted between two contact plates. The design adopts the contact unit of special structure, increases the contact point and area with terminal, avoids instantaneous break, ensures that contact pressure is uniform and persistent, stably transmits after boosting large current, improves charging efficiency.

The utility model relates to a long-acting low-temperature-resistant corrugated board which comprises a paper board body, fixing blocks are symmetrically and fixedly connected to the right end of the paper board body, inserting strips are symmetrically and fixedly connected to the ends, away from the paper board body, of the fixing blocks, and fixing strips are symmetrically and fixedly connected to the ends, located between the two inserting strips, of the fixing blocks. Clamping blocks are fixedly connected to the sides, away from each other, of the two sets of fixing strips, the two sides of each clamping block are designed to be of an inclined face type structure, placing grooves are formed in the positions, corresponding to the fixing blocks, of the left end of the paperboard, clamping columns are fixedly connected to the middles of the interiors of the placing grooves, and baffles are symmetrically and fixedly connected to the interiors of the placing grooves; clamping grooves are formed in the positions, corresponding to the clamping columns, of the inner side walls of the baffles. The paperboard splicing device has the advantages that by means of the design of the clamping columns and the clamping grooves, splicing of two sets of paperboards can be rapidly completed, and loosening is avoided.

The invention discloses homogeneous mixing equipment for dry-type transformer castable processing, and relates to the technical field of mixing equipment.The homogeneous mixing equipment comprises a mixing tank, a mixing mechanism and a caking processor, the mixing mechanism comprises a rotating roller, and a servo motor is fixedly installed at the position, close to a belt transmission assembly, of the outer side of the mixing tank; stirring blades are fixedly mounted on the outer circular surface of the rotating roller and mounted in the mixing tank, a U-shaped notch is formed in the end, away from the rotating roller, of each stirring blade, a suspended matter treatment assembly is mounted in the middle of the outer side of each stirring blade, the caking treatment device comprises a prism-shaped column, and the prism-shaped column corresponds to the U-shaped notch in position. Arc-shaped protruding blocks are fixedly installed at the corresponding positions of the outer sides of the prism-shaped columns, and warped plates are fixedly installed at the positions, close to the bottoms, of the outer sides of the prism-shaped columns. The homogenizing and mixing equipment for dry-type transformer castable processing achieves the effect of uniform mixing, caking is not prone to occurring, materials are uniformly mixed, and the material mixing effect is good.

The invention relates to the technical field of seedling righting, and discloses a seedling righting device for forest cultivation, comprising a seedling body, clamping plates attached to both sides of the seedling body, and a multi-angle correction mechanism for correcting the seedling body arranged outside the two clamping plates. An operator inserts the two stabilizing arc plates into soil around a nursery stock body and splices the two stabilizing arc plates into a closed structure, the opposite direction of correction is determined by measuring the inclination angle of the nursery stock body, the user can slide the two fixing plates and slide the two movable supports respectively, and then the nursery stock body can be corrected. When the movable support and the fixing plate slide to proper positions, a user fixes the movable support and the connecting plate through a first locking pin and a second locking pin, the user can start an electric push rod, the output end of the electric push rod drives a correcting protection plate to apply external force through a connecting rope, and the deviated nursery stock body is corrected to be in an upright state.

The present invention provides a two-station double-break disconnector, comprising: two contact blades, which can be installed on the switch body in a linear manner up and down; a main shaft, which is rotatably installed on the switch body and drives the two contact blades to move in opposite directions through a gear rack assembly; a first static contact and a second static contact, which are arranged on the switch body up and down, and both have a first slot for the corresponding contact blade to be inserted, and a straight conductive spring is installed on the inner wall of the first slot, and the length extension direction of the straight conductive spring is arranged parallel to the contact blade surface on the side of the contact blade, wherein when the contact blade is inserted into the first slot, the side of the straight conductive spring is squeezed by the contact blade surface and is in close contact with it. When the switch is in the closed position, the two contact blades are respectively in contact and connected with the corresponding static contacts; when the switch is opened, the main shaft drives the two contact blades to move in opposite directions through the gear rack assembly, so that the two contact blades are disconnected from the corresponding separation, thereby forming a double break, which has higher safety performance.

The utility model relates to the technical field of nylon wheels, and discloses a forming device for nylon wheel production, which comprises a machine table, a motor is arranged on the lower surface of the machine table, an output shaft of the motor is fixedly connected with a rotating rod, the upper surface of the rotating rod is fixedly connected with a circular plate, and the upper surface of the circular plate is provided with a placing assembly. The placement assembly comprises a placement box, a clamping assembly is arranged in the placement box, a drainage assembly is arranged on the rear surface of the placement box, the clamping assembly comprises a two-way threaded rod, a rubber sleeve is fixedly connected to the outer wall of the two-way threaded rod, and a rotating disc is fixedly connected to the front surface of the two-way threaded rod; a round rod is fixedly connected to the front surface of the rotating disc. According to the clamping device, through cooperation of the rotating disc, the bidirectional threaded rod, the sliding plate, the round rod, the rubber sleeve, the arc-shaped plate, the first clamping block and the second clamping block, the number of contact points between the clamping device and a mold during clamping can be increased, and clamping firmness and product machining stability can be kept.

The invention relates to a hybrid-driven walking, spraying and swimming integrated bionic robot and an advancing method, the hybrid-driven walking, spraying and swimming integrated bionic robot is suitable for water surface, underwater and underwater movement, the hybrid-driven walking, spraying and swimming integrated bionic robot comprises a pressure-resistant shell, a spraying driving structure is arranged in the pressure-resistant shell, walking feet are arranged outside the pressure-resistant shell, and the spraying driving structure in the pressure-resistant shell comprises a water pump and a gravity center adjusting water cabin communicated with the water pump; the output end of the water pump is communicated with the outside, the walking feet are arranged outside the pressure-resistant shell, and the power structure of each walking foot comprises a pull rod which is located in the pressure-resistant shell and driven by a power set arranged in the pressure-resistant shell to move axially and an energy storage spring which is located in the pressure-resistant shell and connected with the pull rod and the walking structure, and the pull rod pushes and pulls the energy storage spring to drive the walking structure. Hybrid driving is adopted, and meanwhile the walking feet and the water spraying propulsion equipment are arranged; and various working motion postures are achieved, and walking, spraying and swimming integration is achieved.

The invention discloses an ultrahigh-pressure semiconductor pneumatic diaphragm valve which at least comprises a valve body, a connecting assembly and an air cylinder, and the connecting assembly is detachably connected between the valve body and the air cylinder. A spring and a piston are arranged in a cylinder body of the cylinder; two ends of the spring are respectively in compression joint with a cylinder cover of the cylinder and the upper end plane side of the piston; a lever mechanism is further arranged in the air cylinder and arranged below the piston, the top of the lever mechanism is connected with the lower end plane side of the piston in a pressed mode, and the bottom of the lever mechanism is connected with the connecting assembly in a pressed mode. The connecting assembly controls opening and closing of the air inlet and the air outlet of the valve body through the lever mechanism. According to the lever principle, the technical effects that the downward pressing force is more perpendicular to the diaphragm, the contact area is larger, more contact points exist, the pressure intensity of the lever piece is smaller, and the service life of the lever piece is longer are achieved.

The preparation method comprises the following steps: adding an alkaline reagent into a silver-containing leaching solution of a retired photovoltaic module to adjust the pH value to 3-5, carrying out solid-liquid separation after reaction to obtain an impurity-removed leaching solution, adding flake silver powder into the impurity-removed leaching solution, then adding a mixed solution of a dispersing agent and a reducing agent, and carrying out liquid-phase reduction reaction to obtain the micro-nano silver powder. And carrying out solid-liquid separation on the reacted slurry to obtain the micro-nano silver powder with lead on the surface. According to the preparation method provided by the invention, silver and lead in the retired photovoltaic silver-containing leaching solution can be effectively utilized, the micro-nano composite silver powder with high conductivity can be prepared in one step, and the preparation method is suitable for preparation of photovoltaic conductive silver paste and electronic packaging conductive silver paste.

The invention discloses a screening device for aqueous battery production materials, which mainly comprises: a coarse material discharge port, a shell, a grinding component, a material dividing component, and a feeding device; the material dividing component is composed of a plurality of screening mesh plates; the screening mesh plates mainly comprise an upper screen layer, a lower screen layer, an auxiliary screening material guiding component, and a tensioning structure; a plurality of auxiliary screening material guiding components which are wider at the top and narrower at the bottom are arranged on the upper surface of the lower screen layer; sieve holes are arranged on the top surface of the auxiliary screening material guiding component; a gradually expanding space portion with a gradually increasing cross-sectional area from top to bottom is formed between the side walls of two adjacent auxiliary screening material guiding components; more materials are facilitated to be discharged along the upper surface of the auxiliary screening material guiding component, thereby reducing material accumulation and blockage.

The utility model relates to a handrail welding positioning tool, and relates to the field of welding processing equipment, the handrail welding positioning tool comprises a workbench, a base, a limiting rod and a plurality of pipe end limiting pieces, the workbench is horizontally arranged, the base is fixed on the workbench, the limiting rod is vertically fixed on the workbench, and the plurality of pipe end limiting pieces are arranged on one side of the base; the base is used for placing the fixing piece, the limiting rod is used for supporting the armrest pipe, and the pipe end limiting piece is used for supporting the end of the armrest pipe. The welding device has the effect of improving the positioning efficiency of the handrail pipe and the fixing piece during welding.

The utility model discloses a novel corrosion-resistant storage tank, and relates to the technical field of storage tanks. The top end of the outer wall of the base is fixedly connected with a first supporting block and a second supporting block. The pair of partition plates is fixedly connected to the inner side wall of the tank body, and the interior of the tank body is divided into the storage cavities by the pair of partition plates, so that various materials can be stored in the tank body, waste of space resources can be reduced when few materials are placed in the storage cavities of the tank body, and the various materials are placed in one tank body, so that the storage tank is convenient to use. According to the multi-material processing and mixing device, when multiple materials are processed and mixed, the time for workers to take the materials can be shortened, the working efficiency is improved, a set of first through grooves are formed in the outer side wall of the tank body, observation plates are fixedly connected to the inner side walls of the first through grooves, and the observation plates are made of corrosion-resistant transparent materials; a worker can observe the storage condition of the materials in the tank body through the transparent observation plate, so that the worker can supplement the materials in time.

The utility model discloses a yarn breaking prevention type bobbin winder which comprises a bobbin winder body, a bobbin winder mechanism is arranged on the outer side of the bobbin winder body and used for winding yarn, and the bobbin winder mechanism comprises a buffering assembly and relates to the technical field of bobbin winders. According to the yarn breaking prevention type winding machine, the friction force during yarn winding can be reduced through the movable roller and the first spring, during use, yarn is attached to the interior of the yarn groove, one end of the yarn is fixed to the outer side of the winding drum, and then the winding assembly is started to wind the yarn on the outer side of the winding drum; when the yarn is wound, the elastic force of a first spring can abut against a limiting disc, the yarn is tightened by a movable roller through a connecting rod, when the yarn is too tight, the yarn can abut against the movable roller, the connecting rod is inserted into a notch to prevent the yarn from being broken, meanwhile, the number of contact points of the yarn can be increased through the multiple movable rollers, and the pressure and friction force of the yarn are reduced; the quality and the service life of the yarn are prevented from being influenced by excessive wear.

The invention discloses an artery compressor which comprises a compressor body and fixing bands, hook-and-loop fasteners are arranged on the fixing bands, the two ends of the compressor body are fixed to limbs of a patient through the fixing bands, the compressor body comprises a support, an adjusting rod and a silica gel pressing block, the support is in a bow shape, and the silica gel pressing block is arranged on the support. A through hole matched with the cross section of the adjusting rod in shape is formed in the middle of the adjusting rod, the adjusting rod movably penetrates through the support through the through hole, the silica gel pressing block is arranged at the end, located on the inner concave side of the support, of the adjusting rod, and the compression force of the silica gel pressing block on a puncture point can be adjusted by operating the adjusting rod. Through the bracket in the shape of the Chinese character'gong ', the contact points with the skin of a patient are increased, so that the firmness when the compression device is fixed on the limb of the patient is improved, the possibility of displacement of the fixed compression device main part is reduced, the compression force can be adjusted by operating the adjusting rod to move according to the feedback of the patient, and the adverse effect caused by improper compression force is reduced.