593results about How to "Reduce force" patented technology

The present invention relates to the technical field of waste gas treatment, and discloses a low carbonic acid tower for tertiary carbonic acid production, the low carbonic acid tower comprises a tower body, the inner wall of the tower body is provided with a plurality of groups of support frames, the support frames are internally provided with filler layers, the lower parts of the support frames are provided with distribution plates, and trickling ports are uniformly distributed at the bottom of a spray pipe, so that the tertiary carbonic acid production efficiency is improved, and the tertiary carbonic acid production efficiency is improved. According to the waste gas absorption tower, through the arrangement of the filter layer, dripped absorption liquid can better cover the interior of the tower body, so that waste gas and the absorption liquid can be better in countercurrent contact, when the absorption liquid flows through the arranged filler layer, the contact area of the absorption liquid and the waste gas can be increased, and an adsorption sieve in the filler layer can also adsorb some harmful substances in the waste gas; and the distribution plate is arranged below the spraying pipe, so that the absorption liquid can be secondarily distributed and is uniformly distributed in the tower body again, and the condition of non-uniform distribution of liquid drops is avoided.

The invention relates to the technical field of synthetic fibers, in particular to a high-elasticity textile fiber and a preparation process thereof. The high-elasticity textile fiber is prepared from the polyurethane-polyamide elastomer and the modified diatomite master batch through melt spinning, drafting and winding. According to the invention, hydroxyl-terminated polydimethylsiloxane is used as polyol, and the molar ratio of the polyurethane prepolymer to the polyamide prepolymer is controlled, so that the prepared polyamide-polyurethane elastomer slice has good heat resistance; the molar ratio of isocyanate to polyol and the molar mass ratio of caprolactam to adipic acid are controlled, so that the prepared textile fiber is excellent in mechanical property; 2, 2-dimethylolpropionic acid is used for a chain extension reaction, the molar ratio is controlled, the moisture regain of the prepared textile fiber is 8.58%, and the moisture absorption is high; the diatomite is modified by the quaternary ammonium salt compound, and the addition proportion is adjusted, so that the prepared spinning fiber has good antibacterial performance.

The invention relates to a scroll compressor. The scroll compressor comprises a static scroll plate, a dynamic scroll plate, a high-pressure partition plate, a high-pressure cover plate, an exhaust valve and a pressure release valve. Wherein the orbiting scroll is configured to be matched with the static scroll to form a compression cavity with variable volume; the high-pressure partition plate is arranged on the static scroll plate; the high-pressure cover plate is connected with the high-pressure partition plate to form an exhaust cavity; the exhaust valve is configured to be communicated with the compression cavity and the exhaust cavity when the exhaust pressure of the compressor is reached; the pressure release valve is arranged on the high-pressure partition plate and is configured to communicate the compression cavity with the exhaust cavity when the pressure in the compression cavity exceeds the exhaust pressure. According to the scroll compressor disclosed by the invention, the pressure release valve is arranged on the high-pressure partition plate, and high pressure in the exhaust cavity directly acts on the high-pressure partition plate instead of directly acting on the static scroll plate, so that the acting force on the static scroll plate is relatively reduced, the risk that the scroll blades of the static scroll plate are stressed and deformed is reduced, and the service life of the scroll compressor is prolonged. And the service life, the performance and the reliability are ensured.

The invention belongs to the technical field of modification of ultra-high molecular weight polyethylene, and particularly relates to special resin for a modified ultra-high molecular weight polyethylene lining oil pipe and a preparation method of the special resin. The special resin for the modified ultra-high molecular weight polyethylene lining oil pipe is prepared from the following raw materials in parts by mass: 65 to 80 parts of ultra-high molecular weight polyethylene, 5 to 10 parts of high-density polyethylene, 8 to 12 parts of modified polyaryletherketone, 4 to 7 parts of modified hyperbranched polyester, 0.3 to 2 parts of silicone master batch and 0.1 to 0.5 part of antioxidant. The lining oil pipe prepared from the special resin for the modified ultra-high molecular weight polyethylene lining oil pipe has excellent wear resistance and high temperature resistance, and also has good mechanical properties such as tensile strength and impact strength.

The invention discloses a flame-retardant flexible circuit board and a preparation method thereof, and relates to the technical field of flexible circuit boards, and the preparation method comprises the following steps: in an organic solvent, mixing a diamine monomer and a dianhydride monomer, carrying out a stirring reaction, and adding a filler to obtain a polyamide acid solution; casting to form a film, and drying to form a polyamide acid film; performing thermal imidization to obtain a polyimide film; adding a cross-linking agent into the polyamide acid solution to form a cross-linked solution; coating two surfaces of the polyimide film with a cross-linking solution, and drying to form a polyamide acid coating film; carrying out thermal imidization again to form a polyimide coating so as to obtain a base film; and setting a conductive circuit to obtain the circuit board. The cross-linking agent is added into the polyamide acid solution, so that the cross-linking density of the coating is effectively increased, a network structure is formed, and the stability of polyimide is improved, thereby improving the mechanical property, heat resistance and dielectric property of the prepared base membrane.

The invention discloses multi-stage wastewater treatment equipment for fabric disinfectant production, and relates to the technical field of wastewater treatment.The multi-stage wastewater treatment equipment for fabric disinfectant production comprises a filtering bin, a shielding cover is detachably and fixedly installed at the top end of the filtering bin, and a water inlet pipe is fixedly communicated with the center of the top of the shielding cover; the auxiliary stirring mechanism comprises a rotating part which is rotationally connected to the center position of the bottom of the inner wall of the filtering bin; the compression of the supporting spring and the compression of the buffer spring are synchronously carried out, when the flow of waste water is reduced or the impact force applied by the flow to the trapezoidal block is changed, the acting force on the supporting spring and the buffer spring is reduced, and the supporting spring and the buffer spring tend to rebound upwards, so that the filter screen is further buffered through the supporting spring and the buffer spring; meanwhile, the filter screen vibrates in the using process, and the situation that the filter screen is blocked by large-particle impurities, and preliminary filtration of the wastewater is affected is avoided.

The invention provides a loader driven by double motors and a maintenance method thereof, and relates to the technical field of engineering mechanical equipment, the loader comprises a frame, a cab and wheels arranged on the frame, a bucket arranged at the front end of the cab, a working device arranged at the right rear end of the frame, and a walking device arranged at the left side of the frame; the working device is arranged above the right side of the walking device; the working device comprises a working motor, a first fixing piece and a second fixing piece; the walking device comprises a walking motor, a third fixing piece, a fourth fixing piece, a fifth fixing piece and a sixth fixing piece. The first fixing piece is fixed with the rear end of the frame; the second fixing piece, the third fixing piece and the fourth fixing piece are fixed with the right lower end of the frame; and the fifth fixing piece and the sixth fixing piece are fixed with the left lower end of the frame. A pure electric driving system is adopted, and the working device and the walking device are driven by double motors to work, so that emission of carbon dioxide and other harmful gases is effectively reduced, and noise pollution is reduced.

The invention discloses a manufacturing method of a substrate structure and the substrate structure, relates to the technical field of packaging substrates, and aims to solve the problem that the quality of a packaging substrate finally formed in the prior art is limited by the thickness of a core plate. The manufacturing method of the substrate structure comprises the following steps: providing a substrate with a first surface and a second surface which are opposite to each other; a through hole penetrating through the substrate is formed in the direction from the first surface to the second surface; forming a first inner metal circuit layer located on the surface of the substrate, an orifice bonding pad covering the through hole and provided with a first hole, and a first conductive metal layer located in the through hole and provided with a second hole on the surface of the substrate and the hole wall of the through hole; forming a plug hole material on the substrate and the first conductive metal layer; removing part of the hole plugging material by adopting a chemical mechanical polishing mode so as to retain the hole plugging material on the substrate, in the first hole and in the second hole; and the surface of the retained hole plugging material is flush with the surface of the first inner metal circuit layer and the surface of the orifice bonding pad.

The invention belongs to the technical field of flame retardants, and relates to a high-strength hyperbranched halogen-free flame retardant as well as a preparation method and application thereof, the preparation method comprises the following steps: preparing a modified isocyanate silane coupling agent from bis (3-aminophenyl) phenylphosphine oxide and 3-isocyanatopropyltriethoxysilane; the preparation method comprises the following steps: preparing a modified amino silane coupling agent from triglyceride isocyanurate and 3-aminopropyltriethoxysilane; the high-strength hyperbranched halogen-free flame retardant is prepared from a modified isocyanate silane coupling agent and a modified amino silane coupling agent. The silane coupling agent is modified according to the principle that an isocyanate group on the surface of the silane coupling agent can chemically react with a tertiary amine group and an epoxy group can react with an amino group, the two modified silane coupling agents form the hyperbranched flame retardant after being hydrolyzed, the highly branched structure enables the intermolecular force to be small, and the hyperbranched flame retardant has the advantages of high flame retardance and high flame retardancy. And the flame retardant shows excellent mechanical strength and excellent flame retardant effect.

The invention discloses a high-yield laminated mold, and relates to the technical field of molds, the high-yield laminated mold comprises a middle mold base, external mold bases are slidably connected to the two sides of the middle mold base, mold cavities are formed in the two sides of the middle mold base, and hot runners communicating with the mold cavities are installed in the middle mold base; a cavity is formed in the middle mold base, an ejector pin penetrating through the middle mold base and extending into the cavity is slidably connected into the middle mold base, a boss is fixedly installed in the ejector pin, a positioning column used for being connected with a nut in a sleeved mode is fixedly connected to the boss, and the sealing unit comprises a sleeve and a piston plate which are slidably connected into the positioning column. The larger the internal pressure of the first sealing ring is, the tighter the first sealing ring and the inner wall of the nut is, plastic in a molten state is prevented from entering threads of the nut under the pressure, after a material is cooled and shaped, the roller and the first sealing ring can automatically restore to the original shape, the force needed by demolding ejection of a product is reduced, and the ejector pin can eject the product perfectly and conveniently.

The invention discloses a high-toughness biodegradable material for film blowing forming and a preparation method of the high-toughness biodegradable material, and belongs to the technical field of biodegradable materials. Comprising 50-60 parts of polyethylene, 8-16 parts of poly (butylene adipate / terephthalate), 6-12 parts of polylactic acid, 4-9 parts of self-made nano silicon dioxide modified lignin, 3-8 parts of modified nano calcium carbonate, 1-2 parts of a plasticizer, 3-5 parts of a compatilizer, 0.2-1 part of a lubricant, 0.3-1.5 parts of carbon black and 0.2-0.8 part of an antioxidant. According to the material for film blowing forming, the self-made nano silicon dioxide modified lignin and the modified nano calcium carbonate are compounded for use, so that the material has ultrahigh toughness, and by adding the poly (butylene adipate-co-terephthalate), the polylactic acid and the lignin, the positive effect on the biodegradability of the material is achieved; therefore, a relatively good biodegradation effect is achieved.

The pneumatic soft robot comprises a front air bag, a corrugated pipe and a rear air bag which are sequentially and coaxially connected, the front air bag, the corrugated pipe and the rear air bag are all provided with independent ventilation air paths, and the front air bag and the rear air bag can achieve radial volume expansion by means of inflation. Therefore, anchoring in the small intestine is achieved, and the corrugated pipe can stretch out and draw back in the axial direction by means of air inflation. Different from a previous intestinal tract detection pneumatic robot, the core idea of the invention is that the small intestine is dragged by using the pneumatic robot, the robot does not need to crawl in the small intestine, a traditional enteroscope outer sleeve operation mode can be replaced, and medical personnel can conveniently carry out related detection.

The tobacco leaf harvesting machine comprises symmetrical supporting rods and is characterized in that the end portions of the two opposite sides of the symmetrical supporting rods are fixedly connected through transverse rods, the end portion of each supporting rod is fixedly connected with a supporting leg, the lower end of each supporting leg is rotationally connected with a walking wheel, and the walking wheels are fixedly connected with the supporting legs. The two cross rods are connected with a cutting assembly through a lifting assembly; the cutting assembly comprises a plurality of electric push rods, and the electric push rods are fixed to the ends of the lower cross beam respectively. The invention relates to the technical field of tobacco leaf harvesting equipment, in particular to a tobacco leaf harvesting machine adopting an involution type semicircular cutter, the involution type semicircular cutter is adopted as a main harvesting tool, a cutting knife moves up and down along a tobacco stem to cut leaf stalks of tobacco leaves, damage to tobacco plants is reduced, the cutting effect is guaranteed, and meanwhile the tobacco leaf harvesting efficiency is improved. Layered harvesting of different layers of tobacco leaves and the requirement for one-time harvesting are met.

The invention relates to a forklift anti-rollover control method based on a zero moment point variable threshold, and the method comprises the following steps: S1, building a whole forklift rollover kinetic model, and carrying out the optimization through a Kalman filtering algorithm, and obtaining the lateral acceleration, the roll angle and the second derivative of the forklift; s2, according to the load weight of the forklift, the combined center-of-mass coordinate of the whole forklift is determined; s3, according to the longitudinal position of the combined mass center, the maximum threshold value of the transverse component of the zero moment point when the forklift is in triangular supporting and the maximum threshold value of the transverse component of the zero moment point when the forklift is in trapezoidal supporting are determined; s4, calculating a transverse coordinate of a zero moment point through a formula; S5, respectively setting the forklift in three states of primary side inclination, intermediate side inclination and critical side inclination; and S6, designing an anti-rollover control strategy, and executing the strategy by using the controller. According to the method, Kalman filtering is used for optimizing the parameters of the whole forklift rollover kinetic model, the state of the forklift is accurately estimated, and different control methods are adopted for the two supporting oil cylinders in different stages.

The invention discloses a flatness detection system and method for a leveler, and the system comprises a conveying platform and a leveler body, the leveler body is installed on the conveying platform, the conveying platform is rotatably connected with rotating shafts at equal intervals, the rotating shafts at two sides are provided with side conveying rollers, and the rotating shaft in the middle is sleeved with a middle conveying roller. Limiting guide mechanisms are arranged on the two sides of the conveying platform and guarantee that the detected plate is located in the middle, and a leveling mechanism is arranged on the leveling machine body and used for leveling uneven positions of different positions of the surface of the detected plate. According to the flatness detection system and detection method of the leveler, the guide balls are elastic balls, the arrangement of the elastic balls can reduce the acting force between the guide balls and the detection plate, and the guide balls limit the two sides of the detection plate, so that the detection plate can be stably conveyed in the horizontal direction, and normal detection of equipment on the detection plate is facilitated.

The invention discloses a preparation method of an all-solid-state cross-linked polymer electrolyte, which comprises the following steps: dissolving polyethyleneimine in a solvent, and stirring for the first time to obtain a first solution; quickly adding lithium salt into the first solution, and stirring for the second time to obtain a second solution; adding polyethylene glycol diglycidyl ether into the second solution, and stirring for 6 hours to obtain a cross-linked polymer electrolyte solution; and pouring the cross-linked polymer electrolyte solution on a polyfluortetraethylene plate, and drying to obtain the all-solid-state cross-linked polymer electrolyte. The all-solid-state polymer electrolyte membrane with a cross-linked network structure is prepared by adopting a rapid cross-linking and solution casting method, the reaction condition is mild, the efficiency is high, and the mechanical strength of the electrolyte is improved; besides, the reaction principle is based on the click reaction of amino and epoxy group, no catalyst, initiator and other impurities need to be introduced, the product is directly obtained from reactants, the reaction is thorough, the system is pure, and potential adverse effects on battery circulation are avoided.

The invention discloses an automatic leveling lifting support, and belongs to the field of lifting equipment. When the lifting support is inclined during placement, the weight of a leveling ball is utilized to pull an abutting block to enable the abutting block to be separated from abutting teeth of a leveling leg, at the moment, a supporting leg slides along the leveling leg under the influence of gravity, a supporting disc rotates, and the supporting disc gradually rotates to a horizontal state, so that the supporting leg can be automatically leveled; the leveling ball is slowly centered under the influence of gravity, component force borne by the pull rope begins to be reduced, the spring is promoted to push the abutting block to move, when the abutting block makes contact with the leveling leg, abutting teeth on the leveling leg abut against the abutting block, part of force of the spring is promoted to be shared by the abutting teeth, the spring is compressed again, and then the leveling leg is pressed. At the moment, when the leveling device on the supporting leg reaches the horizontal position, the leveling device clamps the pull rope, so that the pull rope does not pull the abutting block, meanwhile, the component force of the abutting teeth received by the spring is also in the balanced state, the bearing disc is just in the horizontal state, and the effect that automatic leveling can be achieved after the support is placed by a worker is achieved.

The utility model provides an adjusting mechanism for a calendaring roller structure. The adjusting mechanism comprises a rack, a first fixing seat, a second fixing seat and a driving roller, wherein the first fixing seat and the second fixing seat are fixedly installed on the two sides of the top of the rack, and the driving roller is rotationally connected between the first fixing seat and the second fixing seat. According to the adjusting mechanism for the calendaring roller structure, a first sliding block and a second sliding block can be driven to move reversely along a sliding rail by rotating a two-way lead screw, and meanwhile a first sliding seat and a second sliding seat can be driven to move synchronously on the inner side of a rack through cooperation of a fixing pin and a supporting plate; the first sliding base and the second sliding base can drive the driven roller to move synchronously while moving, then the distance between the driven roller and the driving roller is adjusted, and by the adoption of the structure, synchronous movement of the two sides of the driven roller can be achieved only by installing a set of threaded transmission structures below the driven roller; the requirement for machining and mounting precision of transmission parts is relatively low, and cost and maintenance cost are reduced.

The utility model relates to the field of spiral transmission, in particular to a spiral anti-backlash sleeve, a transmission assembly and a solar device. The spiral anti-backlash sleeve comprises a first sleeve body and a second sleeve body which are coaxially arranged, threads with the consistent thread pitch are arranged on the circumferential faces of the first sleeve body and the second sleeve body, the first sleeve body is provided with a first guide rail part, the second sleeve body is provided with a second guide rail part, and an elastic piece is arranged between the first sleeve body and the second sleeve body; the bearing and guiding piece comprises at least one connecting position used for being connected with an external driving component; the first sleeve and the second sleeve of the guide bearing piece are movably connected; the device further comprises an anti-disengaging part which is fixedly connected with the bearing and guiding piece and used for limiting the movement range of the first sleeve and the second sleeve. The screw drive assembly is provided according to the drive sleeve. Finally, the solar device is provided according to the spiral transmission assembly. The spiral spline has the beneficial effects that the spiral transmission stability is improved while the transmission gap of the spiral spline is reduced.

The invention relates to the technical field of constructional engineering structures, in particular to a fabricated beam column with an anti-seismic structure. Comprising a frame column, a frame beam is arranged on one side of the frame column, the frame column is connected with the frame beam in a clamped mode through a bracket, and a shock insulation pad is installed between the bracket and the frame beam; the two steel plates are symmetrically and fixedly connected to the two sides of the frame column, the steel plates are connected with first extrusion plates in a sliding mode, and friction plates are installed between the first extrusion plates and the frame beam. The frame beam is subjected to the earthquake force effect, the first extrusion plate extrudes the friction plate to deform so as to achieve energy consumption, meanwhile, when the frame beam displaces, the friction resistance between the friction plate and the frame beam is gradually increased, and on the basis of extrusion energy consumption of the friction plate, variable force friction energy consumption is achieved; the connecting stability of the frame columns and the frame beams is improved, and the acting force of external force on the frame columns and the frame beams is weakened.

The invention relates to an anti-aging and firming medical silk fibroin gel dressing and a preparation method thereof, and belongs to the technical field of dressings. According to the invention, a certain amount of deionized water is creatively added into a deep eutectic solvent prepared by using a surfactant hexadecyl trimethyl ammonium chloride as a hydrogen bond acceptor and xylitol as a hydrogen bond donor for dilution, so that a pretreatment agent is prepared and is applied to extraction of silk fibroin; silk is sequentially subjected to pretreatment of a pretreatment agent, degumming of a sodium carbonate aqueous solution, dissolution of a calcium chloride / ethanol / deionized water ternary dissolving agent, dialysis, centrifugation and drying operation, silk fibroin is obtained, the extraction rate is high, and the biological activity is good; irreversible damage and damage caused by high temperature of the silk fibroin in the traditional alkaline degumming process can be effectively reduced, and correspondingly, the obtained silk fibroin can also play more excellent anti-aging and firming effects after being prepared into the dressing.

The invention discloses a main shaft system of a wind driven generator, which relates to the technical field of wind power generation, and comprises a fixed shaft, a rotating shaft and two bearings, the rotating shaft sleeves the outer side of a shaft main body part of the fixed shaft, the rotating shaft is sleeved with a disc I and a disc II, and a reinforcing rib I is arranged between the disc I and the disc II; an inner concave structure is arranged at the transition position of the shaft main body part and the disc flange part of the fixed shaft, a transition ring is arranged in the inner concave structure, the transition ring axially extends to the bearing outside the inner concave structure, the transition ring is in interference fit with the bearing, the outer circular surface of the transition ring is in interference fit with the rotating shaft, and the inner circular surface of the transition ring is in clearance fit with the fixed shaft. The rotating shaft sleeves the outer side of the shaft main body part of the fixed shaft, so that the bearing capacity is higher; the rotating shaft adopts a double-disc shared reinforcing rib structure, so that the shaft system structure is relatively high in integral rigidity, simple in structure, light in weight and good in economical efficiency; and the transition ring is arranged at the concave structure, so that the stress concentration coefficient of the fixed shaft is greatly reduced on the basis of meeting the structural use requirement, and the use requirement of a large MW-level unit is met.

The pressure-adjustable air valve pressing fork for the compressor unit comprises a valve seat and a valve deck, a connecting rod is fixedly installed in the middle of the valve deck, the valve seat is arranged on the connecting rod in a sleeving mode and attached to the top of the valve deck, an annular groove is formed in the top of the valve deck, and the valve deck is fixedly connected with the valve seat. An annular groove is formed in the connecting rod, a valve block attached to the bottom face of the valve seat is arranged in the annular groove, a reset supporting assembly used for supporting the valve block is arranged at the bottom of the annular groove, the outer wall of the connecting rod is sequentially sleeved with a sealing sleeve and a guide sleeve which are attached to the top of the valve seat, and the outer wall of the guide sleeve is sleeved with a pressing fork sleeve seat. According to the pressure-adjustable pressure fork structure, redundant force brought to the valve plate can be reduced in the working process, the valve plate has a better working state, an original welding pressure fork structure is replaced with the pressure-adjustable pressure fork structure, and the problem that the valve plate is damaged or the service life of the valve plate is shortened due to the fact that the overall pressure of the pressure fork is too large is solved.

The utility model discloses a drilling machine for deep hole machining of a high-purity graphite product. The bottom of the positioning device is fixedly connected with the top of the workbench, and the outer side of the dust removal device is fixedly connected with the inner wall of the workbench. According to the device, a positioning device, an upper inclined plate and a lower inclined plate are matched to form a splayed shape, the upper surface of a graphite product extrudes the upper inclined plate and a moving frame to move upwards, the moving frame drives a piston rod in a piston piece to move upwards until the graphite product is pushed to be placed on a placing frame, and the bottom of the graphite product is supported through a notch plate; the large area of the graphite is in a suspended state, a drill bit can conveniently and completely penetrate through the graphite, the position of the movable frame is adjusted according to the thickness of the graphite, the graphite product is conveniently clamped and fixed, the position of the graphite is prevented from deviating during deep hole machining, and the purpose of deep hole machining is achieved.

According to the cushion applied to the child safety seat and the child safety seat, the cushion is detachably laid on the child safety seat, the through hole is formed in the middle of the cushion so that a front striding belt can penetrate through the through hole to be connected in a restrained mode, and the seat part is divided into the hip supporting area and the thigh supporting area with the through hole as a reference. At least the thigh supporting area is filled with an energy absorption material with a slow rebound characteristic; under the condition that a vehicle collides or drastically slows down, the action time of elastic compression deformation of a child passenger on the thigh supporting area is effectively prolonged, the thigh supporting area reduces the resultant acceleration and displacement of corresponding parts of the body of the child passenger through a certain counter-acting force, and the real energy absorption effect is achieved; it is ensured that the injury index of the child passenger is optimized, the injury risk of the child passenger is reduced, and the riding safety and reliability of the child passenger are improved; meanwhile, the thigh supporting area is filled with the energy absorption material with the slow rebound characteristic, and the comfort of the child passengers is further improved.

The invention discloses a safety escape device for a pressurized building and an escape method of the safety escape device, and relates to the technical field of pressurized building escape. The safety escape device comprises an escape telescopic channel, stairs, a fire alarm system and a pressure control system.The escape telescopic channel is connected to the pressurized building in a sealed mode through a supporting connecting plate; one side of the supporting connecting plate is connected to an escape window of the pressurized building through a hanging frame, and a first sealing door for communicating the pressurized building with the escape telescopic channel is arranged on the supporting connecting plate; a second sealing door is arranged at the end, away from the supporting connecting plate, of the escape telescopic channel. The internal accommodating space of the escape telescopic channel can be changed according to the number of escape people; and the pressure control system is used for adjusting and balancing the air pressure between the pressurized building and the escape telescopic channel according to the air pressure in the pressurized building so as to conveniently open the first sealing door and pressurize the interior of the escape telescopic channel. The pressure relief escape device effectively solves the pressure relief escape problem of the closed supercharged building under the emergency condition.

An industrial device capable of being used for cooling, stripping, overturning and transferring large-size fragile sheets comprises a base, a first rotating arm, a hydraulic cylinder installed on the first rotating arm, a synchronous belt transmission mechanism, a vacuum suction cup overturning head 1, a bevel gear transmission mechanism, a direct-acting air cylinder, a vacuum suction cup overturning head 2, a second rotating arm, a large U-shaped plate, a motor 1 and a belt motor 2. The hydraulic cylinder is connected with the first rotating arm, the hydraulic rod is connected with the turnover mechanism, the synchronous belt transmission mechanism is installed on the two sides of the large U-shaped plate and connected with the turnover shaft, the vacuum suction cup turnover head 2 is connected with the air cylinder, the bevel gear transmission mechanism is installed at the top end of the hydraulic cylinder and fixed, one end of the rotating rod is connected with the bevel gear structure, and the other end of the rotating rod is connected with the direct-acting air cylinder. A main shaft of the motor 1 is connected with a bevel gear transmission shaft, the motor 2 is connected with a small belt wheel of a synchronous belt transmission structure, the vacuum suction cup overturning head 1 is connected through an overturning shaft, a cooling valve is installed on the vacuum suction cup overturning head 1, and the base can be installed on the ground or a base plate. According to the invention, large-size (more than phi 300mm) fragile material sheets can be turned over and transferred after being cut, cooled and stripped, so that the defects of multi-station work are further reduced, the working efficiency can be remarkably improved, and the number of structures required for completing the operation and the processing cost are reduced.

The application discloses a kind of evaporator inner plug testing equipment of accurate positioning, it is related to evaporator performance detection technical field, including test table, advancing support unit, test mark unit and sensing unit, wherein test table is used for signal control and reception, advancing support unit is used for the support travel of evaporator pipeline, test mark unit is used for testing whether the internal plug point of evaporator appears, sensing unit is used for detecting the viscosity of plug point plug, in the advancing process of advancing support unit in evaporator, whether the internal plug of evaporator appears is detected by test mark unit, while the plug point is marked, it is convenient for subsequent accurate positioning plug point, the viscosity of plug point plug that appears is detected by sensing unit, it is convenient for subsequent corresponding cleaning means, improve maintenance efficiency.