35results about How to "Improve connection performance" patented technology

The invention relates to a bridge prefabricated hollow pier column post-poured connecting structure. The bridge prefabricated hollow pier column post-poured connecting structure is characterized by comprising a prefabricated hollow pier column, a pier column foundation and a post-poured concrete pier wall, wherein connecting steel plates are pre-buried in the top surface of the pier column foundation, and an installation limiting block limiting the installation position of the prefabricated hollow pier column is arranged at the center of the pier column foundation; the prefabricated hollow pier column is fixed on the pier column foundation through the connecting steel plates; the prefabricated hollow pier column is wrapped by a steel protecting barrel, and a steel rib plate is arranged on the outer wall of the steel protecting barrel; the concrete pier wall is poured on the periphery of the bottom of the prefabricated hollow pier column, and the hollow position in the prefabricated hollow pier column is filled with a concrete filling core section formed by micro-expansion concrete. As the prefabricating process is adopted for the structure, the construction speed is high, connection strength is high, overall stress performance is good, anti-seismic performance is strong, and technological and economical benefits are good. The invention further discloses a construction method for the bridge prefabricated hollow pier column and foundation connecting structure.

The invention relates to an outer partition wall built by adopting light concrete partition wall boards and a construction method thereof. The outer partition wall is formed by splicing a plurality of abreast light aggregate concrete partition wall boards, and is arranged between two adjacent sideboards of a main body structure, rear groove-type embedded parts are sheathed at the tops and bottomsof splicing seams of the light aggregate concrete partition wall boards, each rear groove-type embedded part is formed by welding an L-shaped steel board and a straight steel board, the horizontal edges of the L-shaped steel board are fixed on the sideboards by virtue of bolts, the vertical edge of the L-shaped steel board are parallel to the outer edges of the sideboards, the light aggregate concrete partition wall boards are shorter than the vertical distance between the two adjacent sideboards, the light aggregate concrete partition wall boards press against the rear groove-type embedded parts at the top, and plugging materials are filled in gaps among the rear groove-type embedded parts at the bottom. The outer partition wall and construction method provided by the invention belong tothe technical field of outer partition walls; the out partition wall provided by the invention has good load-carrying capacity; and the construction method has the advantages of simplicity and convenience in construction, shorter construction period, and the like, and is applicable for construction for the outer partition walls by using the light aggregate concrete partition wall boards.

The invention relates to a prefabricated assembled integral framework column bottom grouting structure, which comprises a prefabricated framework column and an anti-shearing groove formed in the bottom of the prefabricated framework column; a grouting sleeve is prefabricated at the bottom of the prefabricated framework column at the same time, is arranged on the periphery of the prefabricated framework column, and is used for connecting a load-bearing steel bar of the prefabricated framework column; the lower part of the tube wall of the grouting sleeve is provided with a grouting hole; a slurry discharging hole is formed in the upper part of the tube wall of the grouting sleeve, i.e., the slurry discharging hole and the grouting hole are formed in the periphery of the prefabricated framework column from top to bottom; a PVC (polyvinyl chloride) pipe is arranged on the anti-shearing groove, and is arranged in an L shape; the vertical part of the PVC pipe is communicated with the anti-shearing groove; the transverse part of the PVC pipe extends out of the other side of the prefabricated framework column to form a high-position slurry discharging hole; the high-position slurry discharging hole is formed above the slurry discharging hole of the grouting sleeve. The prefabricated assembled integral framework column bottom grouting structure solves the problem that during the prefabricated framework column bottom grouting, air in the anti-shearing groove cannot be thoroughly exhausted.

The invention provides a circular steel tube welding machine. The circular steel tube welding machine comprises a supporting mechanism, a jacking mechanism and a welding mechanism. The supporting mechanism comprises two supporting bases, a supporting drive assembly is arranged below the supporting bases, and the two supporting bases can vertically rise and fall under control of the supporting drive assembly. The jacking mechanism comprises two edge movable plates, a thimble is mounted on the inner side face of each edge movable plate, and two sets of jacking drive assemblies are arranged on abase and used for controlling the two edge movable plates to synchronously and reversely move in the horizontal direction. The welding mechanism comprises a supporting disc, a drive disc and a weldinggun disc. One side of the drive disc is rotationally mounted in the supporting disc, and the other side of the drive disc is fixedly connected with the welding gun disc. According to the welding machine, circular steel tubes are welded by rotating a welding gun, the efficiency is high, as the circular steel tubes are static in the welding process, the circular steel tubes are firm and stable after being welded, and the strength of the positions of weld joints is high.

The invention relates to an optical fiber end face processing method and an optical fiber connector. The method includes the steps of S1, penetrating an optical fiber through an insert core of the connector; S2, positioning length of one end, extending out of the insert core, of the optical fiber to form an extending end of the optical fiber; S3, inserting the extending end into a grinding groove of a grinder, using a grinding face of the grinding groove to abut the end face of the extending end to allow the end face to be in contact with the grinding face; S4, rotating the grinder, and grinding the end face of the extending end through the grinding face; wherein the length of the extending end is larger than the depth of the grinding groove. By the method, the problem of bad optical fiber end face cutting is solved, fully contact of optical fiber end faces is facilitated, return loss of the optical fiber connector is reduced, and insertion loss of the optical fiber connector is reduced.

The invention provides a method for preparing a fiber modified aerogel material. The method comprises the following steps: preparing a dopamine hydrochloric acid solution to adjust the pH value; adding jute fiber felt, an alumina fiber and a sepiolite fiber, and introducing nitrogen gas so that the nitrogen gas in the solution is saturated, and sealing; performing irradiation and stirring treatment; cleaning, and drying to obtaining a mixed fiber; taking zirnocyl chloride octahydrate, titanium tetrachloride and deionized water to be mixed and stirred to obtain a solution A; taking ethyl orthosilicate and ethanol to be mixed and stirred to obtain a solution B; mixing and stirring the solution A and the solution B; placing in an ice water bath, adding propylene epoxide and stirring; adding the mixed fiber and a polydopamine nanofiber to be stirred, pouring into a mold, sealing and aging; taking out, soaking in acetone; taking the mixture out of acetone and drying to obtain the fiber modified aerogel material. The material prepared by the method has the advantages of very good heat insulation effect, very good mechanical properties, good bending strength, good flexibility and high compressive strength, and well avoids sudden breakage of the material.

The invention provides an electrical connector, which includes a plastic core, a terminal and a shielding shell. The shielding shell protrudes and forms bumps and shrapnel that elastically press against the mating electrical connector when the electrical connector is plugged in with the mating electrical connector. The guiding slope, the pressing portion and the fixing portion are sequentially connected in the direction of the end, the guiding slope is inclined toward the insertion end, and the pressing portion protrudes toward the mating electrical connector. The present invention also provides an electrical connector combination. The shielding shell of the first electrical connector is provided with bumps and elastic pieces, and the second electrical connector is provided with depressions that are correspondingly engaged with the elastic pieces of the first electrical connector. In the present invention, bumps and shrapnels are provided on the shielding shell, so that when it is plugged into the matching electrical connector, the bumps and shrapnels can be pressed against the matching electrical connector to play a good positioning role, and the electrical connection The combination of the device is more stable, not easy to loose, and the connection conduction performance is better.

The invention relates to a laminated rubber support reinforced by combining fine high-strength steel wire meshes with steel fibers. The laminated rubber support consists of rubber bodies, fine high-strength steel wire meshes, outer-layer protecting rubber and steel fibers, wherein the fine high-strength steel wire meshes are thick meshes woven by high-strength steel wires, and the fine high-strength steel wire meshes are closely distributed in the rubber bodies layer by layer to restrain the side deformation of the rubber bodies, so that the support has rigidity and load-bearing capacity required by normal use; steel fiber materials are distributed in rubber in disorder, so that the mechanical property of the rubber bodies is improved, the connection of the fine high-strength steel wire meshes and composite rubber materials is closer, and the restraining effect is enhanced; favorable deformation capacity of the fine high-strength steel wire meshes and the connection action of the steel fibers ensure that the rubber bodies and the high-strength steel wire meshes can still synergistically work under the condition of extreme deformation, and the problems of adhesive failure and the like cannot occur. Under the action of earthquake, the laminated rubber support allows larger shearing deformation until upper and lower surfaces completely break away from a contact surface to present an overturning state and even generate horizontal scrolling, the earthquake force of an upper structure is prevented from being transmitted to a lower structure, the effect of earthquake insulation is exerted, and the safety of a bridge structure is ensured.

The invention provides a redundant joint attachment method, which comprises the following steps: an MME (Mobility Management Entity) sends a message to a VLR (Virtual Local Area Network) correspondingto a 3G (The 3rd Generation Telecommunication) network, and the VLR stores MME information and creates SGs (Serving Gateway) association between an MSC (Mobile Switching Center) of the 3G network andthe MME; the HLR stores the MSC position information of the 3G network; then the MME sends a position updating request to the MSC of the 2G network, and the VLR of the 2G network stores MME information and creates a related SGs association; the HLR stores the position information of the 2G network MSC; and when there is an incoming call, if the MSC of the 3G network fails, the HLR acquires a roaming number from the MSC of the 2G network to obtain the home location information of the mobile terminal, and the mobile terminal falls back to the 2G network cell to establish a call. The invention further comprises a corresponding system. According to the redundant joint attachment method and system, when the 4G multimode card has voice service and needs to fall back and the MSC of the 3G network is abnormal or the corresponding SGs interface fails, the call request is completed by the attached MSC of the 2G network, so that the service connection capability and the success rate are improved.

The invention discloses an optical proximity correction method for optimizing the connection performance of through holes. The method comprises the steps that S1 a through hole initial pattern and oneor two connected metal layer patterns are provided; S2 selective size adjustment is carried out on the metal layer pattern to acquire a metal layer adjusted pattern; S3 a target through hole patternwith the through hole initial pattern coverage less than a predetermined threshold is acquired; S4 the size of the target through hole pattern is adjusted to acquire a through hole layer adjusted pattern, so that the coverage of the metal layer adjusted pattern on the through hole layer adjusted pattern is greater than or equal to the predetermined threshold; S5 the through hole initial pattern and the through hole layer adjusted pattern are combined to acquire a through hole layer combined pattern; and S6 optical proximity correction is carried out on the through hole layer combined pattern,and the corrected through hole layer combined pattern is output. The method provided by the technical scheme of the invention can effectively make up for insufficient coverage caused by metal layer size adjustment and ensure the process width of a narrow process window pattern of a metal layer.

The invention discloses a combined shear connector for a corrugated steel web and a corrugated steel base plate and a construction method. The shear connector comprises the corrugated steel web, a lower flange steel plate, a web perforated steel plate, a flange plate strip-shaped perforated steel plate and shear connector construction steel bars. The corrugated steel web, the lower flange steel plate, the web perforated steel plate and the flange plate strip-shaped perforated steel plate are integrally connected through welding, and the shear connector construction steel bars penetrate through holes of the web and the flange plate strip-shaped perforated steel plate and are welded to shear connector longitudinal construction steel bars to form a steel bar skeleton. By adopting the shear connector, the problems that a traditional embedded shear connector is insufficient in integrity, a traditional flange type shear connector is difficult in base plate concrete pouring construction, and the quality of the reinforced concrete joint part is hard to ensure can be solved. Compared with other combined shear connectors, the combined shear connector is simple in structure, reasonable in structure, free of influence on base plate concrete pouring construction and good in reinforced concrete joint part quality and overall working performance and has good technical and economic benefits, and the steel bars are convenient to machine.

The invention relates to the technical field of fan production, in particular to a fan welding process. The fan welding process comprises the following process steps of S1, butt welding of a machine shell; S2, oil pipe welding, specifically, S21, rough machining; S22, segmented welding; S3, weld inspection; S4, kerosene penetration test; S5, heat treatment, wherein a jacking oil pipe, an oil return pipe and a threading pipe are made of 304 stainless steel, a fan casing is made of Q345C, heat treatment is conducted on the fan casing, the jacking oil pipe, the oil return pipe and the threading pipe according to the heat treatment requirements of the 304 stainless steel and the Q345C, the fan casing, the jacking oil pipe, the oil return pipe and the threading pipe are heated to 400-500 DEG C, and heat preservation time is 24 hours; S6, hydraulic pressure test; and S7, paint spraying. By means of the compiled fan welding process, the welding residual stress of the weld position of the fan casing and the weld position of the oil pipe can be eliminated, the connecting performance of the fan casing and the oil pipe is improved, then the overall performance of the fan casing is enhanced, and the service life of the fan casing is prolonged.

A tapered threaded bolt and nut are provided. The bolt comprises a main body; an outside helical surface and a first end helical surface are defined on the main body; a shape of the outside helical surface is the same as a shape of a lateral surface of a solid of revolution formed by using a right trapezoid as a generatrix, rotating uniformly around a cathetus of the right trapezoid which is coincident with a center axis of the main body, and synchronously, axially and uniformly moving the right trapezoid along the center axis of the main body; a shape of the first end helical surface is the same as a shape of helical end surface with a same direction as an axial moving direction of the solid of revolution. An inside helical surface and a second end helical surface are defined in a screw hole of the nut.

The invention discloses a penetrating type connector combination. The combination comprises a main body part and a cable, the cable includes core wires, the main body part comprises a joint, conducting terminals and a pedestal, the pedestal is provided with wire ducts, and the width and depth of the wire ducts match those of the core wires; and the bottom of the wire ducts is provided with connecting terminals which are electrically connected with the conducting terminals; an upper cover is fixed on the pedestal, and includes through holes which are aligned with the wire ducts respectively up and down; and penetrating sheets are inserted downwardly into the through holes, and make contact with the connecting terminals by penetrating the core wires. The penetrating type connector combination has the advantages that the core wires are pressed into the wire ducts and are thus very easy to assemble; the core wires tend not to offset or rotate in the wire ducts due to pressure by the penetrating sheets, and it can be ensured that the penetrating sheets can be inserted in places accurately; and the connecting terminals including positioning holes, the penetrating sheets are inserted into the positioning holes after penetrating the core wires and thus fixed in both up and down, the penetrating sheets cannot be loosened event the cable is drawn by a large force, and the reliability is extremely high.

The invention discloses a foam heat-insulating brick for a roof.The brick is provided with a foam layer and a surface layer which achieve layer binding; the foam layer is prepared from, by weight, 625-930 parts of cement, 625-860 parts of dry sand, 1.8-2.2 parts of a foaming agent and 400-560 parts of water; the surface layer is prepared from, by weight, 120-128 parts of cement, 265-280 parts of small stones, 360-385 parts of fine sand and 96-105 parts of water.The foam heat-insulating brick is provided with the foam layer and the surface layer, the foam layer is mainly prepared from the cement, the dry sand, the foaming agent and the water in appropriate proportion, the surface layer is mainly prepared from the cement, the small stones, the fine sand and the water in appropriate proportion, preparation is easy, the cost is low, no pollution is generated, and the heat insulating effect is good.The foam layer components accounting for 5%-10% of the total weight of the surface layer are preferably added in the surface layer, therefore, connection between the surface layer and the foam layer can be greatly enhanced, the strength of the heat-insulating bricks can be improved, the firm and durable advantages are brought, and a certain benefit can be brought to the heat-insulating performance of the foam heat-insulating brick.

In a switching device (1), in particular a D.C. switching device, with at least one electric input (2) and at least one electric output (3), at least one first switching contact (4) and a movable switching bridge (11), the switching device (1) further having an arc-extinguishing arrangement (6) with at least one arc-extinguishing chamber (7) and a U-shaped yoke (8) arranged around the outside of portions of the at least one arc-extinguishing chamber (7), at least one first limb (9) of the U-shaped yoke (8) has a predeterminable number of passages (10).

The invention relates to a mounting method of wall type energy dissipation device, and belongs to the technology and construction field of construction engineering energy dissipation and shock absorption. The method comprises the step of firstly binding lower frame beam rebars and lower concrete connecting wall rebars, then fixing lower pre-buried anchor bars and a locating steel plate, afterwards shoring the frameworks of a lower frame beam and a lower concrete connecting wall, then conducting pouring on the lower frame beam and the lower concrete connecting wall, whereafter mounting adjustable supporting and locating models, upper pre-buried anchor bars, sleeves and upper connecting threaded rods, then binding upper frame beam rebars, upper concrete connecting wall rebars and shoring the frameworks thereof, afterwards conducting pouring on upper frame beam and upper concrete connecting wall, then removing the integral supporting and locating models, then locating H-shaped steel, then connecting the top of the wall type energy dissipation device to the upper connecting wall through the upper threaded rods and the sleeves, uplifting the H-shaped steel by the adjusting effect of middle connecting bolts, finally conducting secondary pouring on microexpanded concrete, and accordingly finishing the mounting of the wall type energy dissipation device. The mounting method of wall type energy dissipation device has the advantages of being convenient to build and simple and fast in detection and replacing after shock.

The invention discloses a bamboo-wood structure beam-column joint and method, and relates to the technical field of civil construction, the bamboo-wood structure beam-column joint comprises a joint main body, the joint main body comprises at least two channels communicated with each other, and each channel is provided with a bamboo-wood component; the bamboo-wood component comprises a supporting part and a supporting part which are connected into a whole, one channel is provided with a grouting hole corresponding to the supporting part, and the other channels are provided with slurry discharging holes corresponding to the supporting part. The joint main body and the bamboo-wood structure are cooperatively stressed, so that the connection performance of a beam-column joint area is improved, and the anti-seismic capacity requirement is met.

The invention provides a building external wall thermal insulation and decoration integrated system. The building external wall thermal insulation and decoration integrated system comprises a glazed foaming ceramic thermal insulation plate, a bonded mortar layer (3) and two or more fasteners (6) correspondingly mounted on the upper side and the lower side of the glazed foaming ceramic thermal insulation plate, the longitudinal section of the glazed foaming ceramic thermal insulation plate is a trapezoid, the cross section of the glazed foaming ceramic thermal insulation plate is a rectangle ora trapezoid, the fasteners (6) comprise fixing parts (9) and inclined parts (8) inclined outwards, the fixing parts (9) are provided with first long holes (10), and can be fixed to a wall body (4) through an anchor bolt (7), the inclined parts (8) tightly abut against the glazed foaming ceramic thermal insulation plate, the included angles between the inclined parts (8) and the wall surface are larger than the base angles of the trapezoid, and the gaps between the inclined parts of the fasteners (6) and the inclined surface of the glazed foaming ceramic thermal insulation plate are filled with elastic rubber (5). According to the building external wall thermal insulation and decoration integrated system, the structure is simple, the connecting performance between the glazed foaming ceramic thermal insulation plate and the wall body can be greatly enhanced.