125results about How to "No air leaks" patented technology

The present invention relates to one kind of puncture resistant leak-less material for tyre without inner tuber and its preparation process. The material consists of two components mixed together, the component A consists of SEBS1 and white oil; and the component B consists of natural rubber, sulfur, promoter DM, stearic acid, zinc oxide and calcium carbonate. The preparation process includes the following steps: mixing SEBS1 and white oil and foaming the mixture; heating the mixture in a reactor, cooling and crushing; heating the materials of the component B, cooling, adding the crushed component A material, heating and cooling. The material for tyre has high heat resistance, high cool resistance, high oil resistance and high water resistance, and the tyre of the said material has no leakage and self repairing function.

The invention discloses a gas protecting system of a metal powder laser quick forming machine. The metal powder laser quick forming machine comprises a sealing forming bin, the gas protecting system comprises a gas circulating purifying mechanism, the gas circulating purifying mechanism comprises an explosive-proof and smoke dust-removal purifier, the explosive-proof and smoke dust-removal purifier is connected with the sealing forming bin through a gas inlet pipe and a gas outlet pipe to form the gas circulating purifying, and is sequentially provided with a water filtering device, a filtering element device, a circulating fan device and a drying machine from an inlet to an exit, and electric valve switches are respectively arranged on the gas inlet pipe and the air outlet pipe. The gas protecting system has the advantages that the oxygen content of the forming environment is controlled to be less than 100ppm, the smoke dust produced in the forming process can be filtered to balance the gas pressure of the forming bin, and the compactness of the formed part reaches 100%; the bright metal luster is realized, and the oxidizing is avoided; the consumption amount of inert gas is saved, the consumption amount of gas is only equal to 2 / 100 of the consumption amount of gas of the prior art, and the economic benefit is higher.

The invention provides a child safety inflatable seat for a vehicle, belongs to the field of automotive seat cushion and seat cover exhibition, and solves the problems that the comfortableness of the conventional inflatable seat is low due to unregulated safety belt position, and the like. The child safety inflatable seat for the vehicle comprises a seat and a backrest which is connected with the upper part of the seat; the seat and the backrest are inflatable airbags; an air inlet device is arranged on the inflatable airbags; a concave hole for fixing a safety belt is formed on the seat; and at least two pairs of regulation holes are formed in the middle of the backrest. The child safety inflatable seat for the vehicle has the advantages of comfortableness, convenient carrying, safety, reliability, environmental protection, strong bearing capacity, and the like.

The invention discloses a multi-air-chamber surfboard made of double wall fabric and a manufacturing method thereof. The surfboard comprises a surfboard body provided with two or more than two air chambers. Each air chamber is provided with an aerating plug. The air chambers are connected through annular material pieces and meanwhile separated through separation belts. The annular material pieces are arranged in parallel on the upper lateral edges and the lower lateral edges of separation belts. The surfboard body is made of the double wall fabric. The surfboard is divided into a plurality of independent air chambers. In use, when any one of the air chambers is subjected to air leakage or damaged and broken, buoyancy of other air chambers can still bear the weight of a surfer who can be ensured to return to a shore safely, and personal safety of the surfer can be ensured.

The invention discloses a tubeless tyre leak-proof material and making and spraying method, which comprises the following parts: 1% SEBS, 1. 5-2% industrial white oil, 0.01-0.03% carbon 9 and 0.01-0.05% TPE. The making method comprises the following steps: blending SEBS and industrial white oil; stirring; foaming to form composite material; putting foamed composite material in the autoclave; adding carbon 5 or carbon 9 and TPE; heating to 250-280 deg. c; cooling to 170-190 deg. c. The spraying method comprises the following steps: spraying fused leak-proof material into tyre at 190-170 deg. c; distributing the lead-proof material on the inner wall of tyre evenly.

The invention provides a method for processing a range gear air cylinder of automobile parts, which comprises the following steps: according to the dimensions required by a drawing, lathing the end face of a left end, an outer circle and a length, boring a big inner hole and a depth, and cutting an inner groove; positioning by using the inner hole in the left end, and drilling four phi11 through holes, two phi8 through holes and a phi16.5 through hole according to the requirements of the drawing; performing milling according the requirements of the drawing; reaming four phi24 counter bores which are two millimeters deep on the four phi11 through holes; reaming two phi12.5 counter bores which are 15 millimeters deep on the two phi8 through holes and chamfering the two counter bores; performing tapping according to the requirements of the drawing; doing tests by using corresponding measuring tools; doing a gas test by mounting a workpiece on a special clamp and fixedly sealing a contact part; and doing a leakage test of the big hole in the left end and the two phi8 holes by applying a pressure of 8 bar and preventing leakage. The method prevents the air leakage of the air cylinder, ensures geometric tolerance and positioning tolerance, greatly improves product quality, creates benefits for enterprises and meets living needs of people.

The invention relates to an internal home appliance device of an integrated ceiling, belonging to the home appliance device for the integrated ceiling. At present, no internal home appliance device of the integrated ceiling with a reasonable structure design, convenience in installation and good sealing performance is provided. The internal home appliance device comprises a panel, a main machine and a keel and is characterized by also being provided with a connecting piece and at least two bearing pieces, wherein the panel is directly and fixedly arranged on the main machine by the connecting piece and is matched with the main machine; the main machine and the keel are fixedly arranged together by the bearing pieces; and the bottom surface of the main machine is positioned under the keel supporting surface. In the internal home appliance device, the structure design is reasonable, the installation and the disassembly are convenient, the space can be effectively utilized, the bottom surface of the main machine is positioned under the keel supporting surface, the spacing between the keel and the ceiling is beneficial to being shortened, the function of effectively utilizing the space is achieved, and the resource utilization rate is improved; and good sealing performance of an appliance without the conditions of light leakage, air leakage and the like is ensured, and the overall performance of the appliance is improved.

The invention discloses a large-diameter polyethylene (PE) straight-wall pipe startup molding and towing device and a startup method thereof. The device comprises a dragger, a cooling sizing water tank, a sizing sleeve and an extrusion die and also comprises a steel rope coiling device, wherein the steel rope coiling device is arranged opposite to the outlet of the dragger; and the extrusion die is provided with an air inlet pipeline. The startup method comprises the following steps of: (1) extruding a pipe blank, gluing and sealing the pipe blank, and fixedly connecting a steel rope; (2) dragging the pipe blank; (3) performing internal pressure sizing; (4) performing negative pressure molding; and (5) removing the steel rope. In the startup process, the internal pressure sizing is adopted, a traction tube is saved, the welding is avoided, waste products in the startup process are reduced, and the success rate is high.

According to the wide-speed-range variable-cycle engine for driving the low-pressure turbine rotor based on the interstage combustion chamber, firstly, the interstage combustion chamber is opened, a turbofan interstage afterburning cycle mode is started, the thrust of the engine is greatly increased, meanwhile, all the first mode selection valves are opened, and the second mode selection valve is closed; therefore, more air flow with high oxygen content enters the internal duct afterburner, an internal duct afterburner mode is started, and Ma0-2.5 + flight is realized. When Ma reaches 2.5-6, a turbine engine core engine is closed, meanwhile, first modal selection valves are all opened, a duct second modal selection valve at an inlet of an interstage combustion chamber is gradually opened, a part of air pressurized by a fan enters the interstage combustion chamber I through the second modal selection valve, a low-pressure turbine is driven to drive a fan A to rotate and pressurize, and the fan A is driven to rotate and pressurize; after air flow pressurized by the engine fan A enters the outer duct, the dual-mode ramjet engine is started and enters a stamping mode, and Ma2.5-6 flight is achieved.

A rotating type heat-sealing and heat-pressing device of an improved structure comprises a conveying assembly, a feeding assembly and a cutting assembly. The cutting assembly comprises a rack, a rotating type cutter, a rotating component power supply unit and a first driving unit, wherein the rotating type cutter is rotationally installed on the rack, and the first driving unit drives the rotating type cutter to rotate. A heating unit is arranged on the rotating type cutter and electrically connected with the rotating component power supply unit. The rotating type cutter is arranged between the conveying assembly and the feeding assembly and located above a pearl wool film or an air bubble film. According to the rotating type heat-sealing and heat-pressing device, the automation degree is high, the labor efficiency is improved, and the follow-up offcut removal procedure is omitted; due to the fact that towing and rotating heat-cutting are completed in a mechanically-matched manner, it is ensured that the whole side edge is in the leveling state, errors caused by manual operation are reduced, and the quality of a manufactured packaging bag is improved; and the product consistency is good, and the standardization level is high.

The invention discloses a multifunctional wine tank for wine production. The multifunctional wine tank for wine production comprises a tank body; a heating layer is arranged at the middle end of the outer side of the tank body; a wine inlet is formed in the left side of the top end of the tank body; a wine outlet pipe is arranged at the lower end of the left side of the tank body; a controller is arranged at the upper end of the right side of the tank body; brackets are respectively arranged on the left and right two sides of the bottom end of the tank body; a stirring device is arranged at the middle end in the tank body; a sampling device is arranged on the left side in the tank body; a first liquid level meter is arranged at the upper end of the left side in the tank body; and a first temperature sensor is arranged at the upper end of the right side in the tank body. The multifunctional wine tank for wine production solves the problems of single function, inconvenience for use and inconvenience for wine delivery of a wine tank in the prior art, adopts the sealed wine storage design to guarantee high quality of wine storage without generating the air leakage phenomenon, has such functions as stirring, sampling, heating and cooling, and is rich in functions and more convenient for use.

The invention discloses a production process for a gas discharge tube. The production process comprises step one, connecting an exhaust pipe with the tube; step two, fusing solid spherical transitional glass at one and / or two ends of the tube in a high-temperature environment, wherein the expansion coefficient of the transitional glass is between the expansion coefficient of an electrode and the expansion coefficient of the tube; step three, blowing the solid spherical transitional glass into a hollow tube with the inner diameter larger than the diameter of the electrode in a high-temperature environment; step four, inserting the electrode into the hollow tube and sealing the middle of the electrode in the hollow tube. According to the production process, the solid spherical transitional glass is fused at two ends of the tube firstly, then, the spherical glass is blown into a tubular shape through the exhaust pipe, the electrode is inserted and sealed into the tube, the whole process is simple and rapid, the middle of the electrode is completely covered with the transitional glass with the expansion coefficient matched with the electrode, and air leakage can be avoided after expansion with heat.

The invention discloses macromolecular synthetic adhesive. The macromolecular synthetic adhesive comprises the following components in percentage by weight: 40 to 48 percent of elastomer, 41.5 to 43 percent of tackifier, 4 to 6 percent of softening agent, 1.5 to 3.2 percent of anti-aging agent and 4.5 to 9 percent of filling agent. The invention further discloses a preparation method of the macromolecular synthetic adhesive. The macromolecular synthetic adhesive has high toughness, high viscosity, high stability, high durability, high tensile strength and special memory performance, a prickedand deformed part of the inner wall of a tyre can automatically recover the memory position when the tyre whose the inner wall is spray-coated with the macromolecular synthetic adhesive is inserted bya sharp object, and the macromolecular synthetic adhesive can rapidly fill a gap formed after the sharp object is pulled out of the tyre, so that the full-sealed space of the tyre still can be maintained and the air leakage condition of the tyre is avoided.

The invention discloses a tubeless tyre leak-proof material and making and spraying method, which comprises the following parts: 1% SEBS, 1. 5-2% industrial white oil, 0.01-0.03% carbon 9 and 0.01-0.05% TPE. The making method comprises the following steps: blending SEBS and industrial white oil; stirring; foaming to form composite material; putting foamed composite material in the autoclave; adding carbon 5 or carbon 9 and TPE; heating to 250-280 deg. c; cooling to 170-190 deg. c. The spraying method comprises the following steps: spraying fused leak-proof material into tyre at 190-170 deg. c;distributing the lead-proof material on the inner wall of tyre evenly.

The invention relates to a double gas source selection valve with stopping function, which comprises a valve body (1) and is characterized in that a valve cavity (9) of the valve body (1) is provided with a high heating valve gas inlet bin (10) and a low heating valve gas inlet bin (11), the high heating valve gas inlet bin (10) and the low heating valve gas inlet bin (11) are provided with gas outlets communicated with the valve cavity (9) and are internally respectively provided with a sealing washer (12) capable of plugging the corresponding gas outlet, the two sealing washers (12) are simultaneously fixed on a drive rod, one passed end of the drive rod is connected with a drive lever, the drive lever is supported against a knob rod, and a drive groove is arranged on the knob lever. The invention has the advantages of simple structure, small size, no gas source output in stopping, safety and reliability.

A micro-passive bidirectional vacuum valve arranged on a vacuum container is suitable for being arranged on a frequently used vacuum container with a small size under the environment without a power in particular. A piston, a piston rod, a bidirectional locking mechanism and a key are connected inside a valve body in turn. One end of the piston rod comprises the bidirectional locking mechanism. One end of the key is contacted and connected with the bidirectional locking mechanism in the valve body; the other end is a spherical body which is inserted in a soft vacuum connection pipe outside the valve body in dynamic fit. The valve is opened and closed by the key by being isolated from the wall of the pipe. The side of the valve is equal to or less than Phi 8mmX4cm; the seal is long; the service life is long; the micro-passive bidirectional vacuum valve is simply and conveniently used and is suitable for various vacuum flat solar heat collector, indoor and outdoor vacuum heat preservation conduit pipes, vacuum preservation and conveying containers for fruits and vegetables. The vacuum preservation containers the surface pressure of which can achieve 0.1MPa below zero have the foundation for existence as the matching of the valve and the convenient passive vacuum valve, thus leading the areas without a power to be capable of using economic and practical ''fridges''.

The invention discloses a stirring and defoaming device for conductive silver paste. The device comprises a mixing barrel, a stirring device and a sealing cover, the sealing cover is connected with the mixing barrel, a vacuum pump is connected to the sealing cover, the air suction port of the vacuum pump is connected with an air outlet in the sealing cover through a connecting pipe, a motor is arranged on the sealing cover, the output shaft of the motor is connected with the stirring device, and the stirring device extends into the mixing barrel. The mixing barrel is used for containing metalsilver particles, base material resin, a solvent, auxiliaries and the like. Mixing and stirring are conducted by the stirring device, air in the mixing barrel can be pumped out through the sealing cover and the vacuum pump, a vacuum environment is formed, gas mixed into the silver paste during mixing is broken and exhausted due to air pressure changes, bubbles mixed into the silver paste are reduced, and the quality of the silver paste is guaranteed; and through the transmission between a first gear and a second gear, a second stirring rod is driven to stir the slurry together, so that the stirring efficiency is improved.

A new-style pneumatic jack consists of five parts, namely, an air bag, a draw bar, a base plate, a pulley and an air duct. The air bag part of the new-style pneumatic jack is divided into an upper bag, a middle bag and a lower bag in sequence from top to bottom, and the inner spaces of three air bag bulges are mutually independent. The side of each air bag is equipped with an air valve, and adjacent two air bag bulges are connected in series by a pneumatic stop valve used for the air duct. An upper air bag bulge is equipped with an anti-skidding rubber plate, so as to come into contact with the chassis of a car, and a lower air bag bulge is connected with the base plate. The air bag is equipped with a pneumatic valve device, and the device inflates quickly when the air bag enters the working state, and can be unloaded slowly during deflation. The new-style pneumatic jack is additionally equipped with a safety protection device on the basis of enhancing air bag strength, and overcomes the defect that the safety factor of a pneumatic jack in the prior art is low.

The invention discloses a pleural cavity water seal drainage device, which comprises a drainage catheter, a negative pressure regulating valve, a water injection port of a negative pressure monitoring window, a supporting foot and a drainage joint. A hook is provided, and a sampling hole is provided inside the outer shell; the head of the drainage catheter is fixedly connected with a joint, the outside of the joint is wrapped and fixed by an antibacterial sheath, and the end of the drainage catheter is connected to the sampling hole; the surface of the outer shell is inlaid A panel, the panel is provided with a water injection port, and the water injection port is connected with the outer shell, the surface of the panel is provided with a negative pressure monitoring window, and the surface of the panel is marked with the water level line of the water seal cavity. The water-sealed drainage device for the chest cavity has the advantages of simple structure, easy manufacture, small volume, convenient portability, good drainage effect, safety and reliability; it has the function of preventing regurgitation, improves the safety factor of the device, and avoids retrograde infection inside the patient's chest cavity.

The invention belongs to the technical field of packaging equipment, and particularly relates to a vacuum sealing machine. The vacuum sealing machine comprises a shell and a sealing cover connected tothe shell and capable of turning over relative to the shell, wherein a processing space allowing a packaging bag to stretch in is defined between the shell and the sealing cover, an exhaust assemblyis arranged in the shell, and an exhaust pipe capable of extending out of the shell and entering the processing space is arranged in the exhaust assembly; and a heating strip is arranged on the position, in the processing space, of the shell, a lower sealing strip is arranged on the position, in the processing space, of the shell, the lower sealing strip is located at the front end of the heatingstrip, the exhaust pipe passes through the upper end of the lower sealing strip when extending out of the shell, and an upper sealing strip aligned with the lower sealing strip is arranged on the position, in the processing space, of the lower end of the sealing cover. The vacuum sealing machine can carry out vacuum sealing treatment on any packaging bag.

The invention relates to a device and a method for adjusting uniformity of a vacuum magnetic control glow. The device comprises a length regulating mechanism, a glow uniformity control mechanism and a glow homogenizing mechanism, wherein the length regulating mechanism is matched with the glow uniformity control mechanism so as to control the glow homogenizing mechanism to adjust the uniformity of the glow. The method comprises the following steps of firstly, measuring uniformity of a spluttering product and judging spluttering intensity of each position; secondly, adjusting length of an adjusting rod according to the spluttering intensity position by the adjusting rod so as to locate a baffle to be adjusted, rotating to drive a baffle nail to move, controlling the opening size of the baffle at the position, producing the spluttering product and measuring the uniformity, and repeating the steps until the uniformity reaches production requirements. The device and the method provided by the invention have the advantages that the device and the method can be operated under vacuum condition without an air return operation, the cost is reduced, and the manpower and material resources are saved; and the glow uniformity can be precisely adjusted.

The invention provides a cleaning agent for a silicon wafer of a solar cell and a using method thereof, belonging to the technical field of solar cell production. The cleaning agent for the silicon wafer of the solar cell comprises the following components: sodium hypochlorous, sodium tripolyphosphate, sodium phosphate and water at a mol ratio of (5-15):(5-10):(1-5):(10-100). The cleaning agent provided by the invention can effectively remove the surface oil generated by wire cutting of monocrystalline silicon, metal impurities inside the silicon wafer, and dust and other granules attaching to the surfaces of the silicon wafer, improve the utilization rate of cell wafer assembly to more than 97%, improve the conversion efficiency of cell wafer to more than 18.2%, and improve the open-circuit voltage of the cell wafer to more than 632 mv.

The invention provides a magnetic attraction type self-adapting wall surface moving robot. The magnetic attraction type self-adapting wall surface moving robot comprises a bottom plate and driving devices. A plurality of magnetic rolling wheels are all hinged to the bottom plate, the driving devices are mounted on the bottom plate and connected with the magnetic rolling wheels so as to drive the magnetic rolling wheels to rotate. The magnetic attraction type self-adapting wall surface moving robot is attracted on the wall surface through magnetic force between the magnetic rolling wheels and the wall surface, attraction force is large, and thus falling is avoided; the attraction mode is simple and convenient, attraction is conducted directly through the magnetic force between the multiplemagnetic rolling wheels and the wall surface, and other attraction devices do not need to be additionally arranged; according to the magnetic attraction type self-adapting wall surface moving robot, through hinging between the magnetic rolling wheels and the bottom plate, the hinged position of each magnetic rolling wheel and the bottom plate is equivalent to a joint of the robot; the magnetic rolling wheels can rotate relative to the bottom plate so as to adapt to wall surfaces at different conditions, and therefore, the wall surface moving robot has the function of climbing on the wall surfaces of different curvatures flexibly and freely and is high in adaptability.

The invention discloses a convenient-to-use flue gas recovery robot which comprises a box body, wherein a gas inlet pipe is clamped and connected under the left side surface of the box body, the rightend of the gas inlet pipe communicates with the interior of the box body, a fixed rod is fixedly connected to the lower surface of the inner wall of the gas inlet pipe, a motor is fixedly connected to the top end of the fixed rod, an air blowing device is fixedly connected to an output shaft of the motor, and a first fixed block is fixedly connected to the right side surface of the inner wall ofthe box body. The convenient-to-use flue gas recovery robot disclosed by the invention has the benefits that through arranging a first filter plate and a second filter plate, the first filter plate iscapable of filtering solid particles with relatively large diameters in smoke dust, and the second filter plate is capable of filtering the solid particles with relatively small diameters in the smoke dust; compared with a traditional flue gas recovery and purification device, the convenient-to-use flue gas recovery robot has the advantage that solid particles in the smoke dust can be filtered twice by the first filter plate and the second filter plate, so that the purification effect of the smoke dust is better, and convenience is brought to people when the smoke dust is purified.

The invention discloses a fast color changing spraying system which comprises a spraying room assembly, a cyclone separator, a filter element recoverer, a powder supply device and an electrical box, wherein the spraying room assembly communicates with the inlet of the cyclone separator through a pipeline; the exhaust port of the cyclone separator is connected with the filter element recoverer; thepowder outlet of the cyclone separator is connected with the powder supply device; and the spraying room assembly, the cyclone separator, the filter element recoverer and the powder supply device areelectrically connected with the electrical box. The fast color changing spraying system has the following beneficial effects: powder can be recycled, the spraying quality is high, the separating effect is better, the filtering efficiency is high and energy is saved.

The invention discloses a piston ring, in particular to a joint type magnetic piston ring. The joint type magnetic piston ring comprises a magnetic joint, which is characterized in that the magnetic joint comprises three sections of 120-degree arc, the radii of the three arcs are the same, and the magnetism at the contacted positions of the three arcs is the same. The invention has the beneficial effects that the bonding property of a magnet and a cylinder sleeve is good and is more uniform than that of an elastic single opening ring, therefore the cylinder sleeve is not easy to form an ellipse; after the wear of the ring and the cylinder sleeve, overlapped parts can automatically extend to fill wearing capacity, and no opening wakening air leakage exists, thereby improving the tightness, ensuring uneasy aging of lubricating oil, prolonging the service life of machine parts and improving the efficiency of heat engines.

The invention relates to a double gas source selection valve with stopping function, which comprises a valve body (1) and is characterized in that a valve cavity (9) of the valve body (1) is provided with a high heating valve gas inlet bin (10) and a low heating valve gas inlet bin (11), the high heating valve gas inlet bin (10) and the low heating valve gas inlet bin (11) are provided with gas outlets communicated with the valve cavity (9) and are internally respectively provided with a sealing washer (12) capable of plugging the corresponding gas outlet, the two sealing washers (12) are simultaneously fixed on a drive rod, one passed end of the drive rod is connected with a drive lever, the drive lever is supported against a knob rod, and a drive groove is arranged on the knob lever. The invention has the advantages of simple structure, small size, no gas source output in stopping, safety and reliability.

The invention provides a magnetic adsorption type flexible self-adaptive wall climbing robot, comprising a bottom plate, a driving device and a plurality of magnetic scroll wheels. The plurality of magnetic scroll wheels are connected with the bottom plate through a spring assembly. The driving device is connected with the magnetic scroll wheels, to drive the magnetic scroll wheels to rotate. Themagnetic adsorption type flexible self-adaptive wall climbing robot is magnetically adsorbed on the wall through the magnetic attraction between the magnetic scroll wheels and the wall, the adsorptionforce is large, the condition of air leakage does not exist, and falling-off does not happen; the adsorption method is simple and convenient, adsorption is realized by virtue of magnetic attraction between the magnetic scroll wheels and the wall, no additional adsorption devices are needed, no noise is caused, the size is small, the cost is low, and the efficiency is high. In addition, the plurality of magnetic scroll wheels are connected with the bottom plate through the spring assembly, and the spring assembly has a flexible structure and has a deformation function, so that the wall climbing robot can flexibly and freely climb on various walls with different bumps, and the adaptability is high.

The invention discloses an industrial waste gas treatment apparatus. The apparatus comprises a catalytic box, wherein two side walls of the catalytic box are respectively equipped with a first dust collector and a second dust collector, a catalyst drawer is clamped at the front end of the catalytic box, and one side, away from the catalytic box, of the first dust collector is equipped with a joint. The inner side of a gas guiding pipe is provided with a crushing assembly which can crush large particles in waste gas before the industrial waste gas is filtered, so that particulate matters are completely dispersed before entering the first dust collector, and the filtering effect is improved. By setting a fixing frame to coordinate with stabilizing assemblies, fixing of a filter bag is facilitated after the filter bag is sleeved inside a cylindrical frame, so that replacement of the filter bag is convenient, and relatively good stability of the filter bag in the first dust collector and the second dust collector can be maintained. By setting the catalyst drawer, replacement of a catalyst is convenient, and a sealing plate is arranged at the front end of the catalyst drawer, so that the sealing effect is relatively good.

The invention discloses a multifunctional tyre. The adopted technical scheme is as follows: a high-elasticity high-air-pressure foam material is used for replacing an inflation inner tyre, is tightly combined with the inner wall of a conventional white structure outer tyre into an integer, and is in firm contact with a strake through a flat gasket ring. The multifunctional tyre is simple in structure and convenient to use, can be normally used after being generally cut, and is free from the trouble of frequently repairing the tyre; when the temperature is high, the tyre is not exploded, and no safety hidden danger is caused; when an anti-skidding stripe is rubbed down, a novel anti-skidding stripe band is adhered in situ, thus the tyre can be continuously used without being replaced with a novel tyre. The multifunctional tyre has the characteristics of simple structure, convenience and safety in use, more durability, resource saving, energy saving and environment friendliness, and is a perfect tyre for ground transportation in the future.