254results about How to "Tight joint" patented technology

The invention relates to an anti-corrosion inclusion bored concrete pile used for saline soil foundations and a construction method thereof. The bored concrete pile comprises a concrete pile body in structure, wherein the inside of the concrete pile body is provided with a reinforcement cage, a flexible, watertight and anticorrosive protection tube is covered on the bottom and periphery of the concrete pile body; and the watertight and anticorrosive protection tube is formed by hot-pressing or welding n layers of polyethylene geotextile bags and n-1 layers of geomembranes, and n is not less than 2. The construction method comprises the following steps: injecting cement mortar between pile holes and the watertight and anticorrosive protection tube, then injecting water in the watertight and anticorrosive protection tube to ensure that the watertight and anticorrosive protection tube expands to the pile hole wall, then injecting concrete paste in the watertight and anticorrosive protection tube, discharging water from the watertight and anticorrosive protection tube by using the concrete paste, and obtaining the bored concrete pile when concrete is set. The invention solves the anticorrosive problem of the concrete pile in saline soil areas, effectively reduces the production cost of the anti-corrosion bored concrete pile and satisfies the strength requirements of projects. The anti-corrosion inclusion bored concrete pile of the invention is applicable to the concrete pile construction with anticorrosive requirements and is especially used in saline soil foundations.

The present invention provides an injectable silk fibroin bone repair filling sustained-release material, including oligomeric lactic acid grafted strontium-doped hydroxyapatite and a silk fibroin dehydration compound and genipin, wherein the molar content of strontium in the oligomeric lactic acid grafted strontium-doped hydroxyapatite is less than 10%. The present invention also provides a preparation method thereof, comprising the steps of: obtaining oligomeric lactic acid grafted strontium-doped hydroxyapatite, wherein the molar content of strontium in the oligomeric lactic acid grafted strontium-doped hydroxyapatite is less than 10%; mixing the oligomeric lactic acid grafted strontium-doped hydroxyapatite and a silk fibroin solution with a mass concentration of 1-10%, heating to 30-70 DEG C, reacting for 4 h to obtain a mixture; mixing the mixture with a genipin aqueous solution with a concentration of 1-15% to obtain the injectable silk fibroin bone repair filling sustained-release material. The present invention also provides the application of the injectable silk fibroin bone repair filling sustained-release material in tissue engineering and drug delivery.

The invention relates to a method for making a lead-acid battery pole plate, which is characterized by comprising the following steps: adopting a foamy carbon with a three-dimensional structure as a skeleton, and electroplating lead or lead alloy on the skeleton to obtain a grid; coating active materials on the grid, and solidifying and drying the grid; and casting a lead or lead-alloy frame on the grid subjected to solidification and drying to obtain the lead-acid battery pole plate. The lead-acid battery pole plate is environment-friendly, can greatly reduce the lead consumption and significantly reduce the weight of the battery pole plate, and can three-dimensionally contact the active materials so as to make the current and potential distributed more uniformly on the battery pole plate, thereby reducing the electrochemical polarization and polarization resistance on the surface of the battery, facilitating the transformation of the active materials, and improving the utilization ratio and specific energy of the active materials. The lead-acid battery pole plate prepared by the method adopts the lead or lead-alloy frame, can facilitate process after-treatment, and has good process processability.

The invention relates to an additive used in the construction industry, in particular to an additive for a lightweight member in a cast-in-place hollow building roof, which comprises the following components by weight percentage in modifying agent: 5.4 to 34.6 percent of early strength agent, 3.3 to 39.6 percent of diffusion agent, 5.4 to 28.8 percent of water-reducing agent, 2.7 to 21.6 percent of suspending agent, 3.8 to 27.4 percent of foaming agent, and 1.1 to 25.9 percent of foam stabilizer. The modifying agent adopting the proposal improves strength of a member greatly, and the member is quickly molded; the cement foaming agent in the additive has strong dispersion property and does not generate phenomenon such as caking and flocculation, shrinkage, bleeding and deposition during production of foam concrete; the foam concrete has stable air holes, and can be reacted with cement to generate cement solid foam concrete which has low water absorption rate; and the air holes are separately closed, and do not absorb water or store water. The added early strength agent can accelerate settling time of the cement concrete, can meet the characteristics of the concrete such as large fluidity, delayed coagulation, early strength and no backward shrinkage on later strength, has good durability, improves construction efficiency, and can improve the strength of the concrete by more than 40 percent in two days. By using the materials for the modifying agent added according to a proportion, the additive has the advantages of light weight, heat preservation, thermal insulation, large strength, quick formation and the like, is tighter and firmer to joint with other building materials, and can be completely used in the building roof.

The present invention provides a rotating target, which includes a target body, a backing tube, and a joint, the joint is arranged between the target body and the backing tube, and the joint includes a A compressible structure and an electrically and thermally conductive adhesive, the compressible structure is a compressible blanket or a compressible sheet. Using the adapter to join the target body and the backing tube can not only help to simplify the process of rotating the target, but also can improve the sputtering power resistance of the rotating target while maintaining the bonding strength between the target body and the backing tube. Acceptance, thereby improving its sputtering efficiency.

The method comprises: making a baseboard with an triangle cavity structure; making a PDMS template and transferring pattern; the obtained handkerchief polymer photon crystal is a trigonal system, and its air cavity diameter is 300nm, and its lattice constant is 600nm; the average depth of the air cavity is 375nm, and the aspect ratio is 1.25(375 / 300); the depth difference between the baseboard and mould pattern is only 3%; the refractive index of the background polymer at 1550nm is 1.475.

The fixing and measuring compressor for soft X-ray mammary gland photography is in box-shaped, and includes a front vertical surface to close the breast wall and box bottom serving as the mammary gland compressing surface. It features the mammary gland compressing surface so shaped to fit the physiological curve of mammary gland. Shaping the compressing surface of compressor as the arc surface to fit the physiological curve of womení»s mammary gland results in well contact to the mammary gland surface during mammary gland examination, dispersed and homogeneous pressure distribution, reduced pressure to and pain of the patient under examination, raised X-ray image quality and raised diagnosis accuracy.

The invention provides a cultivation method based on rice and vegetable rotation. A first crop is rice, a second crop is early-maturing cauliflowers and a third crop is celeries, and one rice and vegetable rotation production cycle is completed through sequential planting of the rice, the early-maturing cauliflowers and the celeries. Specifically speaking, rice seedlings are raised in the midmonth of March, rice fields are turned over and then the rice seedlings are transplanted in the midmonth of April, and the rice is harvested from last ten-day of July to first ten-day of August; the rice fields are turned over, flattened and made into ridges in first ten-day and midmonth of August and then the cauliflowers are planted, and the cauliflowers are harvested from last ten-day of November to first ten-day of December; the celeries are planted from last ten-day of November to first ten-day of December, and after the celeries are harvested in first ten-day to midmonth of April, one rice and vegetable rotation production cycle is completed. According to the cultivation method based on rice and vegetable rotation, transitions of rice and vegetable rotation are combined closely, and the land utilization rate and the multiple crop index are improved; meanwhile, diseases and insect pests of the rice and the celeries are reduced; in addition, through the rice and vegetable rotation, especially through the manner that the celeries are directly planted after the early-maturing cauliflowers are harvested, frequencies of farmland ploughing and water and soil loss are reduced, labor intensity is reduced, and the purposes of increasing incomes, reducing expenses and promoting sustainable development are achieved.

The invention includes a subcombination of optical fibre optical device with extended optical fibre, a ring cap, a sleeve and an external package pipe, a binding agent can be infiltrated into miniature gap between subcombination of said optical fibre optical device and all the components by utilizing capillary action so as to attain the goal of compact combination and sealed package. This combination mode is different from and superior to that of general optical component by using tin soldering paste.

Provided is an anti-misoperation power distribution cabinet device, used for distributing electric power from a power supply to electrical loads. The power distribution cabinet includes a fixed cabinet body (9) used for installing power distribution devices, and a pivotal door (99) which can be pivotally mounted to the fixed cabinet body (9) through the rotation cooperation between a pivotal axis (91) and a bearing component (92) fixed on the fixed cabinet body (9). The pivotal door (99) is provided with an electric device, and is in fixed connection with the pivotal axis (91); the upper end of the pivotal axis (91) is fixedly provided with a cylindrical cap (93) located above the bearing component (92) and performing axial location by means of the bearing component (92).

The present invention discloses surface bionic protection method of stone material and lithical cultural relic. The protection method includes cleaning the surface with detergent comprising deionized water or organic solvent, treating the surface with biological amphibpatic functional pre-treating liquid, and crystallizing supersaturated calcium oxalate solution on the surface to form fine and compact surface protecting calcium oxalate film. The present invention has the advantages of wide applicable range, excellent compatibility to stone material, high weather resistance, raised corrosion resistance, improved hydrophobicity, firm combination with base stone material and no influence on the outer appearance, color and hand feeling of original stone material.

This invention discloses a control system of motocycle for on-off shifting; using clutch automatic control system assorting semiautomatic shifting control system, accomplish the automatic on-off of the clutch in the motocycle and semiautomatic shifting. The stepping switch for step election connects with the main control cell via serial communication interface unit and the pulsed coil on the engine engage the main control cell through signal conversion cell. Then the main control cell join the shift display circuit feeler unit for the displacement of the clutch carrier rod respeatively through signal processing unit and signal conversion cell. And it also connects with holding cell, on-off driving cell which engages the on-off actuating mechanism, shift driving cell which engages the shifting actuating mechanism. This invention also unfurls the self-steering way using the system. The intellectualized controlling of the releasement and engagement of the clutch and the action of the shifting makes a timely and sufficient shifting, a high accuracy on-off and a strong reliability and also gives a comfort driving and a long operational life of the engine and air cyclinder.

A heat-sink module is prepared as setting heat -sink fin at external of heat pipe and connecting the two with each other, forming heat pipe body by unified top unit and side wall being set around said top unit, setting base with ring-shaped groove to be opposite to said unified top unit and enabling to insert side wall of heat pipe body into ring-shaped groove of base for jointing said base with heat pipe body firmly.

A power distribution cabinet device convenient to operate is used for distributing electric power from a power supply to an electricity load. The power distribution cabinet device comprises a fixed cabinet body (9) for installing a power distribution device and a pivot door (99) which is installed on the fixed cabinet body (9) in a pivoted mode through the running fit between a pivot shaft (91) and a bearing part (92) fixedly arranged on the fixed cabinet body (9). A power utilization device is installed on the pivot door (99), the pivot door (99) is fixedly connected with the pivot shaft (91), and a cylindrical cap body (93) which is located on the upper portion of the bearing part (92) and axially positioned by means of the bearing part (92) is fixedly arranged at the upper end of the pivot shaft (91).

The invention provides a plane display device and combined type outer frame and manufacture method thereof. The outer frame of the plane display device comprises a front frame, a support frame and an elastic cushion. The support frame is arranged opposite to the front frame and comprises a convex ridge projecting thereon; the two surfaces of the elastic cushion are respectively jointed with the front frame and the support frame, the convex ridge on the support frame is pressed into the elastic cushion. The design enables the different components of the frame body to be more closely jointed, thereby reaching the effect of preventing the powder dust intruding into the plane display device module.

A method for forming a double pattern comprises the following steps: providing a layer to be etched; forming a sacrificial layer with openings on the surface of the layer to be etched, wherein the openings expose part of the surface of the layer to be etched; forming a spacer on the surface of each side wall of the sacrificial layer; removing the sacrificial layer; carrying out hydrophobic treatment on the spacers to enable the spacers to have a hydrophobic surface; and cleaning and drying the surface of the layer to be etched and the surfaces of the spacers. By adopting the method, the accuracy of a formed double pattern can be improved.

The invention relates to a floor expansion joint structure used in complex use environments. The floor expansion joint structure used in the complex use environments includes floors, an expansion joint, a floor edge sealing steel structure, an expansion joint waterproof structure and an expansion joint force transferring structure. The floor edge sealing steel structure includes closed angle steeland an edge sealing light-gauge steel section, the top of the edge sealing light-gauge steel section supports the bottom end of the closed angle steel, and the top of the edge sealing light-gauge steel section and the bottom end of the closed angle steel are fixedly connected; and the outer side face of the edge sealing light-gauge steel section is flush with the side end faces of the floors at the corresponding positions, and the bottom side face of the edge sealing light-gauge steel section is flush with the lower side faces of the floors. The expansion joint is filled with the expansion joint waterproof structure, and the expansion joint force transferring structure comprises a force transferring steel plate and a force transferring steel plate sleeve. According to the floor expansionjoint structure used in the complex use environments, the floor edge sealing steel structure is designed at the expansion joint of the floors and used as the formwork when concrete is poured on the floors, the convenience and quality of concrete pouring are ensured, and plate joints are prevented from being damaged due to collision; and according to the arrangement of the expansion joint waterproof structure and the expansion joint force transferring structure, the requirements of the deformation, load bearing and durability of the expansion joint in the complex use environments can be met.

The invention provides a substrate for a power module, a substrate with a heat radiator for the power module, the power module and a manufacturing method of the substrate for the power module, wherein a metal plate and a ceramic substrate of the substrate for the power module are combined firmly and are high in reliability of thermal cycle. The substrate (10) for the power module is characterized in that aluminum metal plates (12 and 13) are jointed with the surface of the ceramic substrate (11) in a laminated manner, Si and Cu are contained in the metal plates (12 and 13), moreover, more than one or two adding elements of Zn,Ge, Ag, Mg, Ca, Ga and Li is or are contained in the metal plates through a solid solution method, and in the metal plates (12 and 13), the total concentration of Si and Cu close to the interface of the ceramic substrate (11) and the adding elements is set to be more than 0.05% (mass percent) and less than 5% (mass percent).

This utility model relates to a vehicle-mounted storage box, which could be a new product in the field of auto parts. The vehicle-mounted storage box includes boxes, which are provided with push-pull drawers. Both sides of the drawer are provided with a sliding mechanism that is used to slide the drawer. The mechanism comprises guide pulley seats, guide pulleys, and a guide track. The guide pulleys are installed on the guide pulley seats and are rotatable. The guide track is located at one side of the drawer. The guide pulley seats are fixed in the box at the positions corresponding to the location of the guide track. The guide pulleys are embedded in the guide track and can roll on the guide track. There is a ringed groove carved at the outer edge of the guide pulley, and there are raised lines on the guide track, which can be set in the ringed groove. The shape of the ringed groove is well matched with that of the raised line. The storage box is provided with push-pull drawers, so that users can use the storage box directly without having to remove the articles on it and lift its top covers, and thus save a lot of time and labor. Meanwhile, the raised line structure at the contact area between the guide track and guide pulleys in the sliding mechanisms on both sides of the drawer enables the drawer to carry relatively heavy objects.

The tool shank contains a taper member, a flange member, a holder member, a clamped member, and a number of slits. The taper member has a conic shape extended along an axial direction with a top section and a bottom section. The flange member is beneath the bottom section of the taper member. The holder member is extended downward from a bottom side of the flange member along the axial direction. The clamped member is extended upward from the top section of the taper member. The slits are configured at intervals around the bottom section surrounding the axial direction. Each slit defines a slightly outwardly bulge. The bulges increase the contact area with and avoid gaps to a tapered socket of a spindle. As such, the tool shank is tightly jointed to the spindle during high-speed rotation without causing vibration and damage.

The invention relates to a preparation method of a memory chip packaging structure. The method comprises the steps of arranging a first packaging layer, a first circuit layer, a first memory chip, a control chip and a second memory chip on a first carrier plate; arranging a second packaging layer, a second circuit layer, a third memory chip, a cache chip and a fourth memory chip on the first packaging layer; arranging a third packaging layer, a third circuit layer, a fifth memory chip and a sixth memory chip on the second packaging layer; then arranging a fourth packaging layer, a fourth circuit layer, a seventh memory chip and an eighth memory chip on the third packaging layer; and removing the first carrier plate, forming a plurality of first grooves for exposing the back surfaces of thememory chips in the packaging layers, forming a plurality of second grooves for exposing the first circuit layer in the first packaging layers, and forming heat dissipation columns and conductive columns in the first grooves and the second grooves respectively.

The invention discloses an electric signal connector of an endoscope. The electric signal connector of an endoscope is formed by a fixed end assembly and a movable end assembly, wherein the fixed end assembly includes a main body; a copper column fixed mount is arranged in the main body; conductive copper columns are arranged on the copper column fixed mount; a ring slot is formed in the right end of the main body; a first permanent magnet is inserted in the ring slot; the movable end assembly includes a housing; a mounting positioning rack is fixedly arranged in the housing; a copper needle fixed mount is arranged in the positioning rack; copper needles or copper needle assembly coordinated with the conductive copper columns; and a second permanent magnet which can be attracted to the first permanent magnet can be arranged between the positioning rack and the housing. The electric signal connector of an endoscope utilizes the principle of opposite poles attract of permanent magnets to realize conduction between the copper needles and the conductive copper columns under the attractive force of the two permanent magnets, and has the advantages of being high in reliability of conduction connection, being simple and compact in structure, being low in production cost, being easy for assembling and operation, and being high in the soundness of mounting of the copper column / copper needle fixed mount so that the copper columns / copper needle fixed mount is not loosened or fallen off.

The invention provides a dual-tooth-head spiral zipper. The dual-tooth-head spiral zipper comprises a pair of zipper tapes, wherein a plurality of zipper teeth are fixedly arranged on side edges, which are oppositely arranged, of the two zipper tapes. The dual-tooth-head spiral zipper is characterized in that each zipper tooth comprises a first branch tooth and a second branch tooth which are symmetrical in shape, the front parts of the two branch teeth respectively and obliquely extend towards the two sides of the height direction of the branch teeth, a clearance is arranged between the front parts of the two branch teeth, engaging grooves which extend along the height direction of the branch teeth are arranged on engaging parts of the branch teeth, and the two branch teeth of the same zipper tooth are respectively overlapped and engaged with adjacent branch teeth of the zipper teeth on the other zipper tape on the two sides of the zipper tooth; on the projection of the cross section of the zipper tapes, the lower part of the first branch tooth and the upper part of the second branch tooth are overlapped, and the two branch teeth are provided with clamping grooves at the overlapped part. The dual-tooth-head spiral zipper has the advantages that the zipper teeth are engaged stably and firmly, the anti-disengaging performance is high, the adjacent zipper teeth are not resisted and disengaged from each other even though the zipper is bent, and the appearance quality is excellent.

A rotatable sputtering target has a target material, a back tube and a joint piece. The joint piece is disposed between the target material and the back tube. The joint piece has a compressible structure and an electrically and thermally conductive adhesive. Particularly, the compressible structure being a compressible blanket or a compressible sheet has multiple through holes and thus the electrically and thermally conductive adhesive is filled in the through holes and then directly formed between the target material and the back tube. Using the joint piece to joint the target material and the back tube not only maintains the joint strength but also elevates the tolerable power of the rotatable sputtering target, which can increase the sputtering efficiency.

The invention belongs to the technical field of semiconductor devices, and particularly relates to a preparation method of a lead frame with a rough side wall. According to the invention, the upper surface of the lead frame is firstly subjected to single-sided brown oxidation, then a semi-etched region and the side wall are subjected to super-roughening treatment after electroplating and etching,and the side wall and the semi-etched region form a rough surface with good roughness by controlling super-roughening process conditions, so that the binding force of the contact region of the lead frame and plastic packaging resin is increased. The lower surface of the lead frame is not roughened, and the pre-electroplated layer with the smooth surface is only formed in the exposed bonding pad area, so that the surface roughening area is reduced; meanwhile, the lower surface is not prone to adhering to overflowing materials generated in the plastic package process, the cleaning difficulty isreduced, the process is simplified, and the roughening and electroplating cost is saved. The side wall of the lead frame has good roughness, the air tightness and reliability of an integrated circuitpackaging body are improved, and the defects of layering, cracking and the like are reduced.

The present invention discloses an electricity larceny prevention single phase electronic watt-hour meter, comprising a terminal box cover, a front cap and a rear cap. The front cap is provided with a hole which is used to be cooperated with a thread hole of the rear cap. A hollow outward extending end column with two open ends, which is fixedly and undetachably connected with the front cap, is upward extended from and arranged on the hole of the front cap, and the hole matches the rear cap. The open ends of the outward extending end column are provided with a sealing cap respectively. The sealing cap is fixedly and undetachably connected with the outward extending end column. The electric energy meter of the invention has the advantages that the front cap and the rear cap are closely connected via the outward extending end columns at the two sides of the bottom of the front cap, fixing seals at the left side and right side of a lateral side of the front cap and two pothooks on the top of the front cap. The connection between the front cap and the rear cap is prevented from being prized at four directions by electricity thieves. The seamless connection design between the front cap and the terminal box cover ensures that the electric energy meter is prized by using the seam between the front cap and the terminal box cover is prevented. The invention has the advantages of improving the surface shell tightness, the prize-proof and the fake-proof performance, increasing the difficulty and cost of electricity larceny and reducing electricity stealing behavior, thereby achieving the purpose of reducing loss and improving efficiency.