161results about How to "Achieve airtightness" patented technology

The invention discloses an auxiliary device for starting and receiving of a shield machine. The auxiliary device comprises a steel sleeve, a bottom framework, and a bearing board, wherein the steel sleeve is formed by connecting a plurality of sleeve bodies, the bottom framework is arranged at the bottom of the steel sleeve, the bottom framework comprises a plurality of sections, the bottom framework comprises a bottom board that extends along a direction vertical to an axis of the steel sleeve, the bearing board extends along the direction vertical to the axis of the steel sleeve and has a side edge matched with the outer side wall of the sleeve body, the bearing board is vertical to the bottom board, lifting boxes are arranged at two ends of the bottom board, the lifting boxes comprise an external box that is formed by connecting a top board parallel to the bottom board with a part of the bearing board and an internal box that is arranged in the external box, the internal box is internally provided with a hydraulic device, and a plurality of vertical and horizontal steel boards are arranged in a clearance between the internal box and the external box so as to divide the clearance into a mesh structure. The auxiliary device can be used for starting and receiving of the shield machine, also can realize cross-station, lifting and translation of the shield machine, is low in device loss and long in service life.

The invention relates to a method and instrument for detecting an oil gas recovery system of a gas station, in particular to an oil gas recovery detecting method and an intelligent detecting instrument, wherein the detecting method comprises the step of detecting the tightness, the liquid resistance and the gas liquid ratio of the oil gas recovery system of the gas station according to the programmed sequence by adopting a flow and pressure matching mode, and the detection data is automatically saved and can be printed on the spot or transmitted to a computer; and the intelligent detecting instrument comprises an anti-explosion circuit system and a closed gas path system, wherein the anti-explosion circuit system comprises a power supply source, a Roots flow sensor, a digital pressure sensor, a display screen, an input keyboard, a single chip microcomputer processing module, a data memory, a printer interface, a data transmission interface and the like, the closed gas path system comprises a flow sensor, a pressure sensor, a pipe fitting, a flexible pipe and a quick joint, and the circuit system and the gas path system are matched with a panel to be integrally installed in a box body. The detecting method of the invention is distinct, flexible, simple and convenient; and the detecting instrument of the invention has compact structure and perfect functions and can be carried, used, maintained and repaired simply and easily.

The invention discloses a low pressure molding package structure for a fuel cell, which comprises a shell, an air electrode and a separation film, a hollow fixing piece, and a hot melt adhesive layer. A plurality of air holes are formed on at least one surface of the shell and the periphery of an inner surface of each air hole is provided with a recessed first accommodating part. The air electrode and the separation film are superposed on the inner surfaces of the plurality of air holes. The hollow fixing piece is arranged in the shell, the surface adjacent to the separation film is provided with an annular flange in a projection mode, and a recessed second accommodating part is formed outside the annular flange. The second accommodating part and the first accommodating part enclose to form a C-shaped flow channel. A hot melt adhesive in a melting state is injected from an injection orifice of the shell or the fixing piece in a low pressure molding mode, so that the hot melt adhesive flows in the C-shaped flow channel and closely adheres and coats the edges of the air electrode and the separation film; and when the hot melt adhesive is cooled and cured, a circle of hot melt adhesive layer which has elasticity and adhesiveness and tightly compresses the air electrode is formed so as to block the leakage of the liquid in the cell.

The embodiment of the invention discloses a method for preparing a two-dimensional material. The two-dimensional material is prepared by stripping through a cutting force generated by secondary flow. The method comprises the following steps of selecting a raw material and a dispersing liquid, and preparing a mixed solution in a mixer; selecting a reactor and a power system, and connecting the reactor, the power system and the mixer; and pushing the mixed solution to the reactor, controlling the flow rate and the circulation time in the reactor, and stripping the raw material to prepare the two-dimensional material by rapid flowing of the mixed solution in the reactor and the cutting force generated by the continuous secondary flow formed at a bent plate. The preparation method has the advantages of simplicity in operation process, low cost, high adjustability and high universality and practicability, and is suitably used for various dispersing liquids and raw material systems; and infinite amplification in longitudinal dimension can be achieved during the preparation process, thus, an amplification effect does not exist, industrial production is promoted, and the method can be used for preparation of the two-dimensional material at a large scale.

The invention relates to a gob-side entry retaining method for putting top waste rock down to achieve roadway side packing. The method is mainly applied to the gob-side entry retaining technical field. In the advancing process of a working face, a top coal caving support is directly adopted to put waste rack above a goaf down, the waste rock is transported to the end of the working face and is simply crushed, transferred and transported back, the processed waste rock is stacked, the goaf on one side of a retained roadway is filled with the processed waste rock to form a waste rock wall serving as a roadway side support, and a rear top beam is arranged at the position, needing roadway side packing, of hydraulic supports of the working face, so that a waste rock back transportation device is conveniently installed and the waste rock is stacked to the enough height. Meanwhile, when the waste rock is stacked or after the waste rock is stacked, cemented filling materials are sprayed to the stacking position of the waste rock to achieve airtightness and reinforcement along the roadway side support of the gob-side entry retaining. The method is of great importance in ensuring gob-side entry retaining stability of the thick seam working face, especially the fully mechanized caving face, improving the resource recovery rate and simplifying the roadway side support process.

The invention discloses a method for aluminum ash treatment and recycling use. Through combination of an aluminum ash heat recovery process and an aluminum ash cold recovery process in a current production system and utilization of a dedusting system and multiple waste use processes, the method effectively solves the problem that environmental pollution, resource wasting and a cost are increased, realizes recycling use of treated alumina and fluoride salts, and has obvious economic benefits.

The invention relates to a sealing way of the tire bead on an air spring and a device thereof; the tire bead of a rubber balloon is placed in a tire bead groove which is formed by the combination of an upper cover plate and a friction plate; the tire bead of the rubber balloon is placed in the tire bead groove which is formed by the upper cover plate and the friction plate; and then sealing for the tire bead of the rubber balloon is formed by the joint compression of the upper cover plate and the friction plate. The sealing structure for the tire bead of the rubber balloon is as follows: a groove-shaped gap is arranged on the upper cover plate; a cone-shaped gap is also arranged on the friction plate; the groove-shaped gap on the upper cover plate is combined with the gap on the friction plate to form a cone-shaped cavity with an opening at one edge; the upper cover plate and the friction plate are connected together by a fastener. The tire bead of the rubber balloon is placed in the cone-shaped cavity; the side edge of the rubber balloon is lead out from the side edge opening of the cone-shaped cavity; and the rubber balloon extends outwards from the center by the opening.

The invention relates to improvement of a pressure gauge verification technology, in particular to a full-automatic pressure gauge verification table and a full-automatic verification method; and thefull-automatic pressure gauge verification table comprises a verification table, a switch, a code scanning device, a camera adjusting mechanism, a camera, a gauge clamping mechanism, a gauge knockingmechanism, a display, a controller and a gas circuit control system; the camera adjusting mechanism comprises a sliding base and a sliding block, the sliding block is in sliding fit with the sliding base, the sliding base is inclined, the camera is installed on the sliding block and faces the gauge clamping mechanism, the gauge knocking mechanism comprises a vertical rod, a telescopic air cylinderand a push rod, the push rod is connected with a telescopic end of the telescopic air cylinder, and a cylinder body of the telescopic air cylinder is installed on the vertical rod. The full-automaticpressure gauge verification table has the advantages of less manual intervention, high automation integration level and high detection accuracy, and can realize the automatic pressure gauge detectionfunction of scanning once, knocking for three times and easily detecting the pressure gauge.

The invention discloses a pressure drainage sealer for pipeline emergency repair, which comprises a closed diversion box, a U-shaped support frame and a pipeline top pressure reinforcement plate, and is characterized in that: the closed diversion box is pressurized by the U-shaped support frame and the pipeline The reinforcement plate is fixed on the leaking pipeline, the airtight diversion box is provided with a diversion pipe, and a diversion valve is arranged on the diversion pipe, and the pipeline top pressure reinforcement plate is provided with a U-shaped support frame. The fixing hole is fixed by the fastening nut. Under the action of the top pressure structure, the drainage sealer is reinforced in the leakage water area. Through welding and diversion reinforcement measures, the drainage is decompressed to a weldable state under the action of diversion Next, the final seal is completed. The present invention is suitable for emergency repair and airtightness of steel pipes, cast iron pipes, glass steel pipes, and concrete pipes.

The invention provides a three-dimensional stack structure of a thin-film ceramic circuit. Between two adjacent thin-film ceramic substrates, through ball mounting welding or prefabricated pad welding, stacking of more than three thin-film ceramic circuit substrates is realized. Solid metal through holes are used for realizing electric connection of a random layer. The structure comprises a local electromagnetic self-shielding structure of a chip and / or a passive component. The local electromagnetic self-shielding structure comprises an upper metal layer, a lower metal layer and side surface solid metal through holes. The three-dimensional stack structure can realize stacking of the thin-film ceramic circuit so that an active chip, an RF structure, a high-power structure, a broadband switching structure and the like are integrally integrated in a three-dimensional direction, thereby reducing plan area of a function core by more than 70%, effectively improving product integration level, synchronously realizing hermetic sealing and electromagnetic self-shielding, and improving product adaptability. The three-dimensional stack structure can replace 60-70% of similar products and has advantages of saving cost by more than 60% and improving production efficiency by more than 40%.

The invention relates to an airtightness packaging radiating structure of an integrated circuit. The airtightness packaging radiating structure comprises a casing or a base plate and a back-off welding chip, wherein the back-off welding chip is welded with a heat sink through slicken solder, a round of the heat sink is welded with a welding frame through solder in brazing mode; and then the welding frame is welded with the casing or a sealing ring on the base plate to form airtightness packaging. A round of groove is arranged on the welding frame to form a buffer ring which surrounds the heat sink for a round. The airtightness packaging radiating structure has the advantages that the existing packaging structures and materials are not changed, and by utilizing the existing assembling welding device and technology, packaging airtightness can be achieved, and the problems of radiating of back-off welding (FC) can be solved.

The invention relates to a method for encapsulating CaO-Y2O3-Al2O3-SiO2 glass at a port of a SiCf / SiC core cladding tube. Part of raw materials which are low in reaction activity and low in nuclear irradiation decay rate and have no side effects on the nuclear reaction process are selected, and a glass brazing filler metal is prepared through a melting-water cooling method; by means of the SiCf / SiC matched thermal expansion coefficient, good wettability and low high-temperature viscosity, packaging / connection of the SiCf / SiC composite core cladding tube is achieved under the conditions that the temperature is lower than the applicable temperature (<=1450 DEG C) of domestic third-generation SiC fibers and no pressure exists. The SiCf / SiC core cladding tube is promoted to be applied to a nuclear reactor, nuclear radiation leakage accidents are prevented in advance, and the operation safety of the nuclear reactor is improved. The method has the beneficial effects that the raw materials selected by an encapsulating agent are low-activity elements, the nuclear radiation decay of the encapsulating agent is small, the encapsulating agent has no side effect on a nuclear reaction process, and the mechanical and airtight requirements of port encapsulation of the core cladding tube are met, so that nuclear radiation leakage in the cladding tube can be effectively prevented in a harsh service environment, and nuclear radiation leakage accidents are prevented in advance.

The invention discloses a microphone module group which includes a plurality of microphone units, a shell for fixing said microphone units. said microphone units are divided into two units, said shell includes a plastic canister with two microphone units are installed inside the plastic canister and a rubber sleeve coated outside said plastic canister; a common acoustic cavity of two microphone units is set between two microphones inside said plastic canister, a voice channel connected with environment and the common acoustic cavity is set on said plastic canister and rubber sleeve; the microphone module group reduces difficulty that the microphone is fit to microphone array, reaches penetration and airtightness of the voice channel, picks up required voice sign efficiently for forming pickup beam of microphone array, and can prevent acoustic reflection in electronic product.

The invention provides solid preparation fabrication equipment and method. The solid preparation fabrication equipment is characterized by comprising a spray freeze-drying device and a solid preparation forming device. The solid preparation fabrication method includes the steps that a solution, mixed suspension liquid or emulsion containing medicine effective ingredients is prepared, spray freezing and drying are performed through the spray freeze-drying device under the stirring or non-stirring state, particles obtained through spray freezing and drying are directly fabricated into a solid preparation through the solid preparation forming device, or the particles obtained through spray freezing and drying are mixed with at least one accessory and then fabricated into the solid preparation through the solid preparation forming device. The solid preparation fabrication equipment and method are particularly suitable for but not limited to the production or research process of materials of properties of sensitization, low content proportion, biological activity, heat sensitivity and the like.

The invention relates to a layered graphite composite bipolar plate and a preparation method thereof. The layered graphite composite bipolar plate comprises a middle layer and surface layers arrangedat the two sides of the middle layer, the middle layer is a thermoplastic resin / graphite composite material plate, the surface layers are thermosetting resin / graphite composite material layers, and the outer surfaces of the surface layers are provided with flow channel structures. Compared with the prior art, the middle layer is made of the thermoplastic composite material, the feeding precision of the thermosetting composite material is improved in an auxiliary mode in the manufacturing process, and meanwhile the problem that the forming reliability of the thermosetting composite material islow under the high carbon content is solved; in addition, the middle layer with high resin content in the layered polar plate improves the bending strength and air tightness of the bipolar plate, andthe surface layer with high carbon content improves the conductivity of the bipolar plate; the overall performance of the bipolar plate is improved by means of respective optimization of different functional layers, and meanwhile, the preparation process is simple and convenient, is beneficial to batch production, and has a higher practical value.

The invention discloses an axisymmetric air inlet structure of a Hall thruster, relates to the field of spaceflight electric propulsion, and aims to solve the problem that working medium gas is asymmetrically distributed when entering a discharge channel, so that the influence of asymmetrical discharge is caused. A radial buffer chamber sinking groove is formed in the center of the lower portion of a magnetic pole bottom plate of the Hall thruster, and a radial buffer chamber cover plate covers the radial buffer air channel sinking groove to form a closed radial buffer chamber. The top of the magnetic pole bottom plate and the bottom of the discharge channel are provided with a first axial buffer chamber sinking groove and a second axial buffer chamber sinking groove respectively, and a closed axial buffer chamber is formed by combining a sealing ring and a mortise and tenon joint structure. Constructing a gas injection structure at the bottom of the discharge channel; communicating air holes which are uniformly distributed in the circumferential direction are formed in the bottom of the magnetic pole bottom plate and the bottom of the discharge channel to communicate the radial buffer chamber, the axial buffer chamber and the gas injection structure; working medium gas sequentially passes through the gas inlet pipe, the radial buffer chamber, the axial buffer chamber and the gas injection structure and is finally injected into the discharge channel in an axial symmetry mode. The device is used for injecting gas into the discharge channel in an axial symmetry mode.

The invention provides an airtight parallel transmission optical device comprising a silicon substrate, an IC chip, a VCSEL chip, a PD chip, and a lens cover plate. The silicon substrate is provided with a silicon dioxide layer, and is provided with fine through holes, which are filled with conductive substances. The conductive substances are used to communicate the surface layer and the bottom layer of the silicon substrate, and are protruded from the bottom surface of the silicon substrate. The silicon substrate is also provided with a solder layer in a plated manner, and the IC chip is disposed on the silicon substrate in an inverted manner. The VCSEL chip and the PD chip are invertedly disposed on the IC chip in an attached manner. The lens cover plate is provided with an array lens, and is buckled with the silicon substrate by a high-precision image aligning system, and then is integrated with the solder layer by adopting the eutectic fusing technology, and then the lens array can be aligned with the VCSEL chip and the PD chip to realize the optical path coupling, and therefore the airtight packaging technology problem can be solved, the material-saving performance and the energy consumption-saving performance can be achieved, the production can be facilitated, and then the product quality can be improved.

The invention relates to a method for gob-side entry retaining of a medium-thickness coal seam and belongs to the technical field of gob-side entry retaining. The method is characterized in that by taking the advantage of large space of a working face of the medium-thickness coal seam, part of a support of the working face on the gob-side entry retaining side is changed into a top coal caving support and a long tail beam support, and a scraper conveyor, a transfer crusher, a transfer belt conveyor and a downward-spreading conveyor are arranged behind the supports on the working face; and in the working face propelling process, the top coal caving support is directly adopted for conveying gangue above a gob downwards, the downwards-conveyed gangue is downwards spread to the gob area on the gob-side entry retaining side to form a beside-entry support after the procedures of conveying, crushing, transferring and downward spreading, and the whole process is carried out in the gob area. Meanwhile, before the gangue is stacked, flexible protecting plates with holes are adopted for separation in advance so as to adapt to roof settling and prevent the gangue from entering an entry, cementing material filling and reinforcing are carried out, and the flexible protecting plates with the holes can be recycled. The method has important significance to guarantee of the gob-side entry retaining stability, increase of the resource recovery rate and simplifying of a beside-entry support process.

The invention discloses a ceramic bonding pad array shell and belongs to the technical field of ceramic shells of integrated circuits. The ceramic bonding pad array shell comprises a ceramic substrateand a T-shaped heat sink, wherein a cavity with steps is formed in the middle of the ceramic substrate; the upper surface of the heat sink is used for mounting chips; the heat sink is in matched overlap connection with the cavity; and the lower surface of the heat sink is co-planar to the lower surface of a bonding pad arranged on the lower surface of the ceramic substrate. According to the ceramic bonding pad array shell disclosed by the invention, the technical problems existing in the prior art that alignment of ball placement or column placement molds is influenced by the ceramic bondingpad array shell, air convection is influenced and heat dissipation is bad can be solved. The technical effects that alignment of ball placement or column placement molds is not influenced, ball placement or column placement can be performed on the surface of the heat sink and the heat dissipation ability is improved can be achieved.

The invention discloses a portable flour multi-quality detector based on near infrared and a detection method. The detector comprises a case, and a power supply, a light source module, a spectrum acquisition module and a control processing module which are arranged on the case, the light source module comprises a detection accessory, the detection accessory comprises an objective table, a light source seat, a light source cover, a sample reference box, a reflecting cover, an optical fiber collimating mirror, a height adjusting mechanism and a halogen lamp bead; the spectrum acquisition modulecomprises a spectrograph, and the spectrograph is connected with an optical fiber collimating mirror through an optical fiber; the control processing module comprises a circuit board, an embedded computer and a liquid crystal display screen, the embedded computer is connected with the halogen lamp beads through the circuit board, the spectrograph is connected with the embedded computer, and the embedded computer is connected with the liquid crystal display screen. The detector is compact in structure, complete in function, light, handy, portable, high in universality, capable of moving everywhere, simple in detection method, capable of effectively detecting whether the moisture value and the DON value of a sample exceed the standard or not and high in detection precision.

The invention discloses a Ka / Ku dual-frequency BUC of an integrated design. The BUC includes an intermediate-frequency signal and reference signal shared input port, two radio frequency output ports,a power input port and a low-frequency control signal input port. The Ka / Ku dual-frequency BUC is integrated with frequency up-conversion units and power amplification units on two frequency bands ofKa and Ku. The frequency up-conversion units and the power amplification units realize switching through a control terminal, and have a shared heat dissipation unit, power supply unit and monitoring unit at the same time. The intermediate-frequency input end of the dual-frequency BUC receives a signal, the Ka frequency band or the Ku frequency band is selected through the control terminal, power amplification is carried out on the selected frequency band, and the same is sent to an antenna. According to the small-volume Ka / Ku dual-frequency BUC of the invention, dual-frequency integrated alternate working can be carried out to ensure that a commercial aircraft flies in global airspace across different regions and different satellite communication frequency bands, and arbitrary switching and real-time communication can be realized.

The invention discloses an air conditioning unit for an EMU multiple unit train and belongs to the technical field of air conditioning equipment of rail vehicles. The air conditioning unit comprises an air conditioning unit body which is characterized in that a first sealing assembly is arranged between an air port in the bottom of the air conditioning unit body and the top of a car; the first sealing assembly comprises a first annular sealing flange arranged at the outer edge of the air port and a first sealing rubber strip arranged in an annular groove of the first annular sealing flange. The air conditioning unit disclosed by the invention has the beneficial effects that 1, the sealing flange at the air port and the car is a bended formed metal sheet part, so that an existing section bar is replaced and a die opening cost is cancelled while the sealing effect is guaranteed, and meanwhile, a design scheme is modified favorably, and the design cost and the product cost are reduced greatly; and 2, the air port and the car are of a double-layered sealing structure, and meanwhile, the double-layered sealing structure is of a labyrinth seal, so that the sealing property of the positions of the air ports is guaranteed, and the airtightness of the unit is achieved by means of a pressure wave protecting valve arranged in the unit.

The invention discloses a gas sample feeding device for determining total organic carbon of a stationary pollution source and an application system of the gas sample feeding device. The gas sample feeding device comprises a connecting seat, a fixed cap and a sealing gasket, wherein the fixed cap is connected to the connecting seat, and the sealing gasket is arranged between the connecting seat and the fixed cap; the connecting seat comprises a concave table and a hollow air passage, the concave table extends downwards from the center of the top end of the connecting seat, and the hollow air passage extends downwards from the center of the bottom surface of the concave table to penetrate through the connecting seat; the sealing gasket is arranged on the bottom surface of the concave table to close the hollow air passage; and the fixed cap comprises a connecting part and a holding part, the connecting part is located at the lower part, the holding part is located at the upper part, the connecting part is inserted into the concave table, and the holding part protrudes out of the top end of the connecting seat. According to the gas sample feeding device, the sealing property of gas transmission, the fluidity of an air way and the measurement precision are effectively guaranteed, the total organic carbon in the stationary pollution source of gas can be directly determined, and gas can smoothly flow into a pipeline in an instrument and finally reaches an NDIR detector.

The invention discloses an airtight pulverizer and application thereof. The pulverizer comprises a sample smashing tank and a non-contact type torque transmission system. The non-contact type torque transmission system comprises a motor, a magnetic rotation shaft and a magnetic transmission coupler. The motor is connected with the magnetic rotation shaft and drives the magnetic rotation shaft to rotate through the magnetic transmission coupler. A shell is arranged outside the magnetic rotation shaft. The lower end of the magnetic rotation shaft extends out of the bottom of the shell and extends into the sample smashing tank. A stirring piece is arranged in the sample smashing tank. The magnetic rotation shaft is connected with the stirring piece and drives the stirring piece to act. The sample smashing tank is connected with the shell of the magnetic rotation shaft in a sealed mode. According to the pulverizer, through the magnetic transmission technology, the external torque transmission efficiency is kept, good sealing, enough power, high efficiency and good effects are achieved when a sample is smashed, operation is easy and convenient, and the airtight pulverizer is suitable for practical use. The gas content of a rock sample can be measured through the pulverizer.

The invention provides a high-temperature material sucking and discharging truck for sucking high-temperature materials by negative pressure and discharging the high-temperature materials by positive pressure. The high-temperature material sucking and discharging truck comprises a high temperature resistant truck chassis, wherein a vacuum pump and a material tank are mounted on the truck chassis; the material tank is connected with an air compressor; a material sucking hole and a tail gate discharging device are mounted at the bottom of the material tank; an air filtering device is mounted in the material tank, fixed at the material sucking hole at the bottom of the material tank, sealed with the material tank and connected with a fine filtering and dust removal chamber outside the material tank through an air pipeline; the fine filtering and dust removal chamber is connected with a metal filter through the air pipeline; the metal filter is connected with a silencer and the vacuum pump through the air pipeline; the air filtering device adopts a sheet-shaped porous ceramic filter; and a filter pipe is also mounted in the fine filtering and dust removal chamber and adopts a tubular porous ceramic filter. According to the high-temperature material sucking and discharging truck, the high-temperature deformation of the filter and the pipeline can be prevented for avoiding the adhesion phenomenon, and the materials can be sucked by the negative pressure and discharged by the positive pressure.

The invention discloses a cooking control method used for a cooking utensil. The cooking utensil comprises a cooker body, an inner pot, a cover, a top temperature sensor, a pressure valve opening andclosing mechanism and a control device, wherein the control device can maintain the pressure in the cooking space to be the constant pressure P. The cooking control method comprises the following steps: S1, heating the inner pot by adopting an inner pot heating device; S2, when the temperature of the top of the inner pot is kept constant at the first preset temperature T1 within the preset time, controlling the pressure valve opening and closing mechanism to be closed through the control device; and S3, controlling the inner pot heating device to carry out further heating till the temperatureon the top of the inner pot achieves the second preset temperature T2, wherein T2=T1+P / dalta p, and dalta p refers to the pressure change value in the cooking space when the temperature on the top ofthe inner pot increases by unit temperature under the condition that the cooking space is under the closed state. Through the cooking control method provided by the invention, by utilizing the top temperature sensor, the cooking utensil can have the preset constant pressure in an area with any altitude.

The invention discloses a space extensible aircraft transformable nose cone provided with nested segmented housings. The space extensible aircraft transformable nose cone is composed of the nested segmented nose cone housings, cross bars and a transmission mechanism of the cross bars, a parallel guide rail rotating mechanism, and a motor screw rod and nut driving device; in whole body deflection and stretching motion process, the mutual nesting of segments of the nested segmented housings can be maintained, the line contact of adjacent nose cone housings is ensured, and the special shape characteristic of the nested segmented housings is capable of improving the nose cone sealing performance greatly, and the reliability of the transformable nose cone is improved. A space extensible structure with a motion freedom of 2 is formed by the nested segmented housings, the cross bar mechanism, and the parallel guide rail rotating mechanism on the side surface; the adoption of the transmissionmechanism is capable of realizing integral body linkage of the segmented housings. The space extensible aircraft transformable nose cone is flexible in transformation, lower in driving, small in nosecone occupied space, and stable in transformation.

The invention discloses an airtight platform anchoring device. The device comprises a base, a ring seat, a PU temporary clamp, a backing plate, a pressure plate and a cover. The base shape is matchedwith a platform top flange and is detachably fixed to the upper side of the platform top flange, the ring seat is detachably fixed to the upper side of the base, a truncated-type through hole matchedwith the shape of the PU temporary clamp is formed in the ring seat, the outer side of the PU temporary clamp is a truncated type and is arranged in the through hole of the ring seat, the backing plate is disposed on the upper portion of the PU temporary clamp, the backing plate is detachably fixed to the ring seat, the pressure plate is disposed on the upper side of the backing plate and is detachably fixed to the backing plate and the ring seat, the cover is disposed outside the ring seat, the backing plate and the pressure plate, and the lower end of the cover is fixed to the upper side ofthe base. The device integrates the temporary clamp into the platform anchoring device, and not only achieves the temporary fixing effect of the lightweight temporary clamp on a submarine cable, but also achieves the airtightness of the inside of platform anchoring.

The invention discloses a battery electrode polar column glass sealing-in structure and method. The sealing-in structure comprises a glass lower washer, a battery cover plate, a glass upper washer, awasher fixing plate, a fixing ring and a solder ring which successively sleeve an electrode aluminum core column; and an annular gap is formed between each of the glass lower washer, the battery coverplate and the glass upper washer and the electrode aluminum core column, the diameters of the annular gaps are equal to one another approximately, and each annular gap is filled with sealing-in glass. An operation method comprises the following steps: assembling the sealing-in structure, then pre-oxidizing the sealing-in structure in an air or oxidizing atmosphere at the temperature lower than 350 DEG C, heating under an atmosphere protection condition, maintaining the temperature in a temperature zone of 350-600 DEG C, and completing sealing-in within one hour. Glass can be phosphate glass or silicotitanate glass. The invention further provides a specific formula. The battery electrode polar column glass sealing-in structure has good heat shock resistance and mechanical impact resistance, a sealing-in operation is finished at a time, and the battery electrode polar column glass sealing-in structure is simple and efficient.