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144results about How to "Guaranteed integrity" patented technology

A laser-based textile fabric thickness measuring device and method

The application relates to a laser-based textile fabric thickness measuring device and measuring method, which comprises a base, two front and rear arranged folding mechanisms and two left and right arranged measuring mechanisms; the folding mechanism comprises a folding stand, a lifting block vertically sliding on the folding stand and a rotating shaft shaft-connected to the lifting block, the rotating shaft is fixedly connected with a mounting rod, and the mounting rod is fixedly connected with multiple side-by-side comb teeth; the measuring mechanism comprises two oppositely moving sliding base plates, the sliding base plates are fixedly connected with measuring stands, upper tooth columns and lower tooth columns are respectively horizontally slidably connected to the upper and lower ends of the measuring stands, the lower tooth columns and the upper tooth columns are transmissionally connected, laser ranging sensors and receiving plates are respectively arranged on the two lower tooth columns, the application significantly improves the accuracy, repeatability and efficiency of thickness measurement, is especially suitable for processing ultra-thin, soft or irregular surface fabrics, and provides an objective and efficient thickness detection solution for the textile industry.
Owner:SHANDONG ZHONGKANG GUOCHUANG INSPECTION & TESTING CENTER CO LTD +1

Module assembly structure of splicing type large printing advertisement

The utility model discloses a splicing type large printing advertisement module assembling structure which comprises advertisement modules, four edges of the back face of each advertisement module are provided with protruding strips, the protruding strips are flush with the side edges of the advertisement modules, the protruding strips of the adjacent advertisement modules are sleeved with the same connecting sleeve, one end of each connecting sleeve is open, and the other end of each connecting sleeve is fixedly provided with an end cover. A pair of protruding rods is connected into the end cover, and connecting holes allowing the protruding rods to be connected in an inserted mode are formed in the two ends of the protruding strip. The adjacent advertisement modules can be spliced by sleeving the connecting sleeves outside the convex strips of the adjacent advertisement modules, so that compared with screw connection, the advertisement module splicing structure is more convenient and labor-saving to operate, higher in splicing efficiency and capable of effectively ensuring the integrity and attractiveness of the connecting surfaces between the adjacent advertisement modules; the protruding strips and the connecting sleeves are connected to form reinforcing strips, and the overall strength of the advertising board can be improved.
Owner:HUAIAN MARVELLOUS PACKAGING PRINTING CO LTD

A method for installing a time-zone type round-table curtain wall

PendingCN122257582Aconvenient lightingConvenience needsCovering/liningsWallsTime zoneMechanical engineering
This invention discloses an installation method for a time-zone-division circular pedestal curtain wall. The time-zone-division circular pedestal curtain wall includes time-zone-division curtain wall units. A set of curtain wall glass is arranged with 24 units corresponding to 24 time zones, forming a pedestal shape that is smaller at the top and larger at the bottom. A time zone pointer is also provided at the top of the curtain wall glass, and the projection of the time zone pointer is projected onto the outer surface of the curtain wall glass. This invention facilitates the lighting and aesthetic requirements of the central area by setting a continuous circular pedestal curtain wall in the middle of the corridor. The setting of the lower and upper floor sloping walls facilitates the installation of the curtain wall keel, providing a fixed foundation and ensuring the overall structural integrity. The time-zone setting of the curtain wall glass ensures both aesthetic appeal and ease of installation while improving lighting efficiency. The setting of the time zone pointer and the pointer connecting wall further makes the central curtain wall resemble a sundial, enriching the structural types, and the pointer connecting wall at the connection point ensures the stability of the installation.
Owner:BEIJING URBAN CONSTR SIXTH GRP

Slope protection device using plant fiber blanket

The utility model discloses a kind of slope protection devices using plant fibre blanket, including slope body, the surface of slope body is laid with plant fibre blanket, a plurality of positioning ring parts are equipped on the plant fibre blanket, it is connected through rigid plate between adjacent positioning ring parts, plug post is slidably inserted in the positioning ring part, and plug post is inserted into slope body;The utility model fixes plant fibre blanket on slope body by positioning ring part cooperation plug post, and the integrity of plant fibre blanket is guaranteed by connecting positioning ring part together through rigid plate, form collaborative protection mechanism, improve the tensile strength of plant fibre blanket, plant fibre blanket is fixed stable, plant fibre blanket can avoid slipping from slope body, adapt to different slope gradient, construction is convenient, guarantee construction progress.
Owner:CHINA FIRST HIGHWAY ENGINEERING CO LTD +1

Automatic feeding device for blister trays

ActiveCN224104499Uless oppressiveAvoid card errorsDirt cleaningRigid containersStructural engineeringElectric cars
The utility model relates to the technical field of blister trays, in particular to an automatic blister tray feeding device which comprises an electric vehicle frame, and supporting plates are installed at the two ends of the top face of the electric vehicle frame. A storage structure is installed on the top face of the electric vehicle frame and comprises a storage frame, the storage frame is fixedly installed on the inner side of a supporting plate, the bottom end of the inner side of the storage frame is fixedly connected with a supporting rod, the outer side of the supporting rod is sleeved with a rubber sleeve, and the two ends of the bottom face of the storage frame are fixedly connected with limiting frames. A positioning protruding block is integrally formed at the front end of the top face of the limiting frame, and a collecting box is slidably mounted on the inner side of the limiting frame. By arranging the storage rack, the blister trays can be stored, the blister trays are obliquely stored, the compression effect between every two adjacent blister trays is greatly reduced, the blister trays are prevented from being clamped mistakenly, the blister trays are kept intact, and the use experience of the device is improved.
Owner:HUAIAN FUXI TECH CO LTD

A wind-solar complementary power generation device facilitating switching

PendingCN122678579Areduce shockRapid regulation
This invention discloses a wind-solar hybrid power generation device that is easy to switch between, relating to the field of wind-solar hybrid power generation technology. It includes a base, with a sleeve rotatably connected to the upper end of the base. A shell is provided on the outer surface of the base, and the bottom of the base is connected to the shell via a support rod. A photovoltaic panel is fixed to the upper surface of the shell. A fan blade is rotatably connected inside the sleeve, and an angle adjustment component is provided inside the sleeve. A locking component is provided at the lower end of the angle adjustment component, and an adjustment rotation component is provided at the upper end of the shell. This invention uses the angle adjustment component to change the fan blade angle when encountering different wind resistances, the locking component to lock the fan blade when the wind resistance exceeds a threshold to avoid damage, and the adjustment rotation component to achieve sealed protection for the photovoltaic panel.
Owner:CHENGKOU COUNTY HONGYUAN WATER RESOURCES DEV CO LTD

Single-grain watchband regrinding device

The utility model discloses a single-grain watchband regrinding device which comprises a machine frame, a watchband control mechanism and a regrinding mechanism, the watchband control mechanism and the regrinding mechanism are arranged on the machine frame, the watchband control mechanism comprises a supporting assembly, a first screw, a lifting assembly, a rotating assembly and an adjusting plate which are sequentially arranged from bottom to top, and the lifting assembly comprises a first sleeve and a second sleeve. The first sleeve is of a hollow cavity structure with an opening in the top, the bottom of the second sleeve is connected with the first sleeve through a spring, the rotating assembly comprises a shaft seat, a rotating head and a rotating shaft used for being connected to the shaft seat and the rotating head, the shaft seat is fixed to the upper end face of the second sleeve, and the rotating head is fixed to the lower end face of the adjusting plate. The regrinding mechanism comprises a regrinding motor, and the output end of the regrinding motor is connected with a grinding wheel. According to the single-grain watchband regrinding device, regrinding of any single-grain watchband can be accurately achieved, it is guaranteed that other watchbands are intact, the reworking time is shortened, and the machining efficiency is greatly improved.
Owner:WINOX WATCH MFR (DONGGUAN) LTD

Dry cast concrete mortise and tenon joint integrated modular building system

ActiveCN224717235UGuaranteed integrityRigid enough
The utility model discloses a kind of dry concrete sleeve tenon-and-mortise connection integrated modular building systems, including top plate, bottom plate and the integrated several boxs by four corners L-shaped shear wall and partition wall, the wall body reinforcement of the L-shaped shear wall is composed of several main force steel bars in vertical direction and several structural steel bars in horizontal direction, the L-shaped shear wall is equipped with connecting recess in the upper and lower ends of the main force steel bar, the outer end of the structural steel bar.All adopt factory integrated production and processing, box adopts basalt rib, the horizontal and upper and lower connection of box and box all adopt standard high-performance concrete suite connection, the transmission of horizontal force between box is transmitted by the friction and mechanical bite force formed by suite and recess, improve the overall performance of structure, can realize horizontal load transmission to two directions simultaneously;The present application is high in degree of assembly, can realize the factory production of structure decoration integration, and can realize the diverse combination between box.
Owner:CHINA RAILWAY CONSTR GRP CONSTR DEV CO LTD +1

Preparation method of composite substrate and composite substrate

PendingCN121816038Aavoid damagePrecisely control the amount of thinningEtchingComposite substrate
The invention relates to a preparation method of a composite substrate and the composite substrate, and the method comprises the steps: providing a wafer bonding structure to be processed, the wafer bonding structure comprises a supporting substrate, a device substrate, and an insulating layer located between the supporting substrate and the device substrate, and the first surface side of the supporting substrate is provided with a cavity structure, the first surface is arranged towards the second surface of the device substrate; the device substrate is thinned to a preset thickness from the third surface of the device substrate, and the preset thickness is smaller than or equal to 10 micrometers; the thinning step comprises the substeps of thinning the device substrate by adopting a mechanical grinding process, wherein the mechanical grinding process comprises the substeps of thinning the device substrate by adopting a coarse grinding process until the thickness is greater than or equal to 120 microns; thinning the device substrate until the thickness is greater than or equal to 60 microns by adopting an accurate grinding process; thinning the device substrate to a third preset thickness by adopting a wet etching process; and reducing the thickness of the device substrate to a preset thickness by adopting a chemical mechanical grinding process. In this way, the device substrate can be thinned to be below 10 microns and is not damaged.
Owner:SUZHOU WEISHI CHUANGXIN TECHNOLOGY CO LTD

Metal pole assembly frame

The utility model discloses a kind of metal vertical pole assembling frame, it is related to bookshelf technical field, including plank and metal vertical pole, the plank and metal vertical pole are all provided with several, several The plank is equidistantly arranged distribution in vertical direction.This utility model inserts the multiple metal vertical pole below clamping post into the multiple upper clamping barrel inside of the lowermost plank respectively in assembling process, completes the positioning of multiple metal vertical pole, then the lower clamping barrel on another plank is aimed at the clamping post above metal vertical pole, another plank is clamped in the upper of multiple metal vertical pole, and then the placement of another plank is completed, and so on, the assembling of multiple planks is quickly completed, and then the assembling of entire metal vertical pole bookshelf is quickly completed, solve the connection structure between metal vertical pole and plank in the assembling process of existing metal vertical pole bookshelf, and the dismounting operation between metal vertical pole and plank is not convenient, and the problem of lower flexibility.
Owner:ZHEJIANG FANSHI DECORATION ENG CO LTD

Large-diameter deep hole rock-socketed pile

The present application relates to the technical fields of pile foundation structure, and specifically discloses a large-diameter deep-hole rock-socketed pile; the rock-socketed pile comprises a multi-section variable-diameter reinforcement cage poured in concrete, and the multi-section variable-diameter reinforcement cage can be butt-jointed at the head and tail; the variable-diameter reinforcement cage comprises a variable-diameter framework, a variable-diameter cage and a plurality of self-locking pieces; the variable-diameter cage comprises a plurality of main reinforcements distributed in a circumferential direction around the variable-diameter framework, at least two connecting rods are hinged between each main reinforcement and the variable-diameter framework, and a plurality of spiral stirrups are installed on the periphery of the plurality of main reinforcements; when a force is applied to the variable-diameter framework by pressing it downward, the variable-diameter framework is expanded by the connecting rods, the radius of the spiral stirrups is increased, and the self-locking pieces and the connecting rods are self-locked. The rock-socketed pile provided by the present application avoids the need to pre-produce a variable-diameter reinforcement cage of a corresponding depth each time, improves the flexibility of construction, and greatly shortens the period of material preparation in the early stage.
Owner:XIANYANG JINGWEI INVESTMENT CO LTD +1

A road surface maintenance grading device for municipal works

ActiveCN224591282UPrevent uneven defectsGuaranteed integrityArchitectural engineeringRoad surface
This utility model relates to the field of road surface maintenance technology in municipal engineering, and more particularly to a leveling device for road surface maintenance in municipal engineering. It solves the problem in existing technologies where the height adjustment mechanism lacks a locking device, leading to loosening of the adjustment components and loss of height control due to vibration during operation. The leveling device for road surface maintenance in municipal engineering includes two mounting frames and a mounting plate positioned between the two frames. Both sides of the bottom of each mounting frame are equipped with casters, and each mounting frame contains a lifting rod. The two ends of the lifting rod are connected to the interior of the mounting frame via a vertical guide structure, and the top of the lifting rod is connected to the top of the mounting frame via a vertical adjustment structure. This utility model, through the cooperation of the lifting rod and the detachable locking structure, achieves rigid fixation after adjustment, effectively preventing height changes caused by operational vibration and improving the stability and accuracy of the leveling operation.
Owner:BEIJING NO 4 MUNICIPAL CONSTR ENG +1

Cleaning device

The utility model relates to cleaning device technical field discloses cleaning device, including fuselage, heating structure, sewage tank and dust extraction structure. The accommodating cavity is established on the fuselage. The heating structure sets up in the accommodating cavity. The sewage tank is connected on the fuselage, and the side of sewage tank towards the accommodating cavity is spaced apart from the fuselage and is surrounded with the fuselage and forms first air outlet passage, and the second air outlet passage is further equipped in the sewage tank. The dust extraction structure sets up on the fuselage, and the first air outlet passage and the second air outlet passage are communicated. The cleaning device provided by the utility model, when the airflow passes through the first air outlet passage, can take away the heat generated by the heating structure, carries out the heat dissipation to the heating structure, improves the heat dissipation effect of cleaning device, and does not need to set up the additional heat dissipation component element for the heating structure.
Owner:GREE ELECTRIC APPLIANCE INC OF ZHUHAI

Design and application of polyurethane gel prepolymer with rapid setting characteristic

PendingCN121949732AEnsure complete moldingGuaranteed integrityPolymer sciencePolyol
The invention discloses a preparation method of a polyurethane gel product with a rapid shaping characteristic. The method comprises the following steps: firstly, synthesizing a special polyol monomer with the primary hydroxyl group content of 70-85% through a specific process, and then respectively preparing soft inner gel component prepolymers A and B and hard outer gel component prepolymers C and D; the method is characterized in that a combined pouring and stepped curing process is adopted, specifically, prepolymers A and B are mixed and then injected into a mold to be subjected to preliminary chemical curing to form an inner gel layer, then a mixture of prepolymers C and D containing photoinitiators is poured on the surface of the inner gel layer, ultraviolet irradiation is conducted immediately to achieve surface photocuring, and finally the product is obtained through overall thermocuring. According to the method, through molecular design, prepolymer synergy and process optimization, the technical problem that high elasticity and rapid forming are difficult to consider at the same time is solved, and the prepared gel product has the comprehensive advantages of being low in hardness, high in rebound rate, small in permanent deformation, high in interlayer binding force, short in forming period and the like.
Owner:BEIJING AEROSPACE KAIEN NEW & ADVANCED MATERIAL CO LTD +1

Municipal garden drainage pipe convenient to install

The utility model relates to the technical field of drainage pipes, in particular to a municipal garden drainage pipe convenient to install, which comprises a drainage pipe body, a connecting hole is arranged on the surface of the drainage pipe body, a connecting pipe is fixedly connected on the surface of the drainage pipe body, and an installing pipe is connected on the surface of the connecting pipe through threads. The connecting holes are formed in the drain pipe body, so that the drain pipe can form different branches through the connecting holes to additionally install other pipelines, and when other pipelines are not installed on the drain pipe body, the mounting plate can conduct sealing treatment on the connecting holes through connection of bolts, the threaded grooves and the inserting holes. And meanwhile, when other pipelines need to be installed, connection can be conducted by opening the installation plate and under the action of the flange plate, the process that the drainage pipe body is cut and then installed is avoided, and therefore the integrity of the drainage pipe body is guaranteed while the working efficiency is improved.
Owner:JIANGSU SHILIHE CONSTRUCTION CO LTD

A method and system for anti-moisture and freeze-thaw soil site layer ramming repair

ActiveCN121428972BSolve the key problems of vulnerabilityRealize integrationGeometric CADMeasurement devicesFreeze thawingSoil science
The present application relates to the technical field of ramming of earthen sites, and relates to a layered ramming method and system for earthen sites resistant to moisture and freeze-thaw, comprising: constructing a digital model of an earthen site, obtaining a ramming material group according to homologous soil and a preset moisture-resistant freeze-thaw material group, preparing optimal fusion soil based on material proportioning constraints, identifying a group of areas to be rammed in the earthen site to be rammed based on the digital model of the earthen site, chemically solidifying the group of areas to be rammed using a chemical reinforcement solution to obtain a group of target rammed areas, and using the optimal fusion soil, a dynamic deformation modulus tester and a rammer to carry out multi-layer ramming on the group of target rammed areas to obtain a group of rammed areas. The present application can improve the durability of the rammed body and the compatibility of the original site, and reduce the risk of repeated repair caused by material degradation or interface failure.
Owner:BEIJING HUATIANGONG TECH CO LTD

Battery cluster liquid cooling pipe connection sealing device

This utility model relates to the field of battery cluster technology and discloses a battery cluster liquid-cooled pipe connection sealing device, including a liquid-cooled pipe body. A rotating collar and an outer collar are respectively sleeved at both ends of the liquid-cooled pipe body. A threaded post is fixedly installed at one end of the rotating collar, and an internal threaded groove is formed on the inner side of the outer collar. A sealing element is filled on the inner side of the outer collar, and an inwardly inclined surface is formed on the inner side of the sealing element. An elastic element located on the surface of the threaded post is fixedly adhered to one end of the rotating collar. This structural design has dual advantages: firstly, modular components enable low-cost and rapid assembly, and sealing can be completed simply by rotating the rotating collar during operation; secondly, the sealing element can be flexibly disassembled. When the sealing performance deteriorates due to repeated compression deformation, it can be directly disassembled and replaced without disassembling the entire pipeline system, effectively restoring the initial sealing effect and balancing economy and maintenance convenience.
Owner:XIAMEN CHUYUAN CENTURY NEW ENERGY TECHNOLOGY CO LTD

A safety detection and intelligent protection device for a coating drying chamber

The utility model relates to a kind of coating drying chamber equipment safety detection and intelligent protection device, including main support, push rod, gyro wheel and sensor;Gyro wheel is rotatably arranged on the top of main support first end, push rod is slidably arranged on the top of main support middle end, sensor is arranged on the top of main support second end, when push rod first end and gyro wheel roll, push rod second end blocks sensor;Gyro wheel is arranged inside drying chamber, sensor is arranged outside drying chamber;The utility model not only can avoid the risk of damage of detection system under high temperature and high humidity environment, and solve the problem that drying chamber internal detection system failure leads to production line frequent failure, personnel routine can be conveniently patrolling line, inspection, test outside drying chamber, guarantee the effectiveness, soundness of sensor.
Owner:SHAANXI HEAVY DUTY AUTOMOBILE CO LTD

Fabricated building sandwich thermal insulation wallboard structure

The utility model provides a kind of assembled building sandwich thermal insulation wallboard structure, including reverse beating decorative surface layer and truss rib steel bar, lower steel mesh and thermal insulation board are equipped above the reverse beating decorative surface layer, upper steel mesh is equipped above the truss rib steel bar, cast-in-place concrete is poured on the lower steel mesh and upper steel mesh.This utility model uses truss rib steel bar to replace traditional connecting piece, with the dual role of promoting wallboard bearing capacity and connecting fixed thermal insulation wallboard, greatly improve the connection strength and overall bearing capacity of sandwich thermal insulation board after forming, overall structure is made into shape by cast-in-place concrete one-time, and it is completed in PC factory integration, ensure the structural integrity, simplify construction technology, improve production efficiency, lower steel mesh is connected by steel wire and reverse beating decorative surface layer multiple point, enhance the connection strength of reverse beating decorative layer and structure, ensure the structural reliability.
Owner:YANCHENG INST OF IND TECH

A telescopic bracket and clothes drying rack

PendingCN122304163AEasy to storeLarge amount of dryingStructural engineeringPower unit
This invention discloses a telescopic clothes drying rack and a clothes drying machine, relating to the technical field of clothes drying equipment. The telescopic rack, applicable to clothes drying equipment, includes a rack housing and a telescopic frame. The rack housing is connected to the lifting assembly of the clothes drying equipment, and the telescopic frame is movably mounted on the rack housing. The telescopic frame is linked to the power unit of the clothes drying equipment. During the process of the power unit driving the rack housing to rise and fall via the lifting assembly, the telescopic frame moves towards or away from the rack housing. The drying rod installed on the telescopic frame can be positioned close to the rack housing when the clothes drying equipment is in its raised, retracted, non-use state, facilitating the overall storage of the clothes drying equipment. When the clothes drying equipment is in its lowered, used state, the drying rod moves with the telescopic frame to a position relatively away from the rack housing, providing a larger drying area for clothes and thus improving the drying effect.
Owner:GUANGDONG HOTATA TECH GRP

Uniform-speed lowering device for through large-diameter vertical hole casing for underground coal mine

PendingCN121952457Afall preventionlow speed entryDrilling machines and methodsThermodynamicsCasing string
The invention discloses a constant-speed lowering device and method for a through large-diameter vertical hole casing for an underground coal mine. The device mainly comprises hoisting anchor cables circumferentially and uniformly distributed on a top plate of an orifice, an orifice anti-falling device mounted on a bottom plate, a guide head and a multi-strand steel wire rope traction system which are connected with a casing string, and a plurality of independently suspended chain blocks. According to the method, a plurality of chain blocks are manually and synchronously operated to achieve controllable constant-speed lowering of a casing pipe, alternate holding and loosening of an orifice safety slip are utilized, an original segmented traction point resetting step is combined, and operation is cyclically conducted till the target depth is reached. According to the scheme, the technical problems that an underground large-diameter deep hole casing pipe is prone to deflection and difficult to move at a constant speed in the lowering process, and the falling risk exists are effectively solved, and the device has the outstanding advantages of being high in safety, good in stability, controllable in operation, high in adaptability and the like.
Owner:陕西煤业股份有限公司 +3

A new prefabricated whole-cast multi-layer bent structure

The utility model relates to the technical field of row structure, concretely is a kind of new prefabricated whole-pouring multistory row structure, including first fixed frame, first mounting hole and connecting rod.The new prefabricated whole-pouring multistory row structure, first fixed frame and second fixed frame are as basic load-bearing unit, and transverse stable connection is realized by connecting rod: the both ends of connecting rod are respectively with the first mounting hole of first fixed frame, the second mounting hole of second fixed frame thread connection, form independent row unit.Meanwhile, the first protruding block of first fixed frame is matched with the first clamping slot of adjacent first fixed frame, the second protruding block of second fixed frame is matched with the second clamping slot of adjacent second fixed frame, after splicing, it is fastened by bolt with the fixed screw hole of clamping slot top and bottom, ensure that node is not loose when transverse expansion, realize the uniform dispersion of load, both ensure the integrity and stability of overall structure, and also realize efficient construction and flexible expansion by the standardization interface of prefabricated component.
Owner:SHIJIAZHUANG RUIMIN HUIZHU TECH CO LTD

Novel reinforced concrete gate tower

The utility model discloses a novel reinforced concrete gate tower, which relates to the technical field of buildings and comprises double stand columns, fixing components arranged at the bottoms of the double stand columns, mounting components arranged at the top ends of the double stand columns, reinforcing components arranged on the upper portions of the mounting components, supporting components arranged on the double stand columns, and the supporting components arranged on the lower portions of the mounting components. The double stand columns serve as main bearing structures, concrete is poured in the double stand columns, and the strength and stability of the stand columns are remarkably enhanced. Through the synergistic effect of the supporting assembly, the mounting assembly and the reinforcing assembly, a multi-layer and multi-direction supporting system is formed, and the overall stability of the gate tower is effectively improved. The supporting inclined rods are obliquely connected with the double stand columns and the supporting transverse rods, so that the anti-overturning capacity is enhanced, and the gate tower is more stable under the action of external factors such as wind power. Due to the design of the fixing assemblies, especially the arrangement of the fixing needles, it is ensured that the double stand columns are firmly fixed to the ground, and the collapse risk caused by an unstable foundation or external force is reduced.
Owner:XUZHOU JIULAIFU DOORS & WINDOWS CO LTD

A prefabricated steel-concrete composite beam floor structure

This invention discloses a prefabricated steel-concrete composite beam floor structure, including frame columns, steel main beams, and steel secondary beams. Floor slabs are laid on the steel main beams and secondary beams. Connecting plates are vertically installed on the web of the steel main beams. One end of the floor slab is wrapped with angle steel. The floor slabs do not contact the frame columns. In this invention, the first floor slab is connected to the steel main beam by a first bolt, achieving a combined effect between the steel main beam and the first floor slab, improving the bending resistance and stiffness of the steel main beam. The second and third floor slabs are connected to the steel secondary beams by spot welding, ensuring that the floor slabs will not collapse under seismic loads. The third floor slab has no rigid connection to the steel main beams, allowing relative sliding between them after an earthquake, thus preventing damage to the slab. Furthermore, a gap is left between the third floor slab and the frame columns to ensure that the deformation of the frame columns under seismic loads does not collide with the floor slab, maintaining the integrity of the floor slab.
Owner:HUAQIAO UNIVERSITY +2

A waterproof structure for the joint between old and new building concrete slabs

This utility model relates to a waterproof structural device for the connection between old and new concrete foundation slabs in buildings, belonging to the field of building waterproofing engineering technology. It includes a main waterproofing body, which is inverted Z-shaped and positioned at the connection between the old and new concrete foundation slabs. A honeycomb buffer layer is filled between the main waterproofing body and both the old and new concrete foundation slabs. Several interlocking grooves are formed on the contact surfaces of the old and new concrete foundation slabs with the honeycomb buffer layer. The filling material within the main waterproofing body and the honeycomb skeleton can absorb water and expand significantly to form a gel barrier layer, creating multiple layers of defense. This allows it to adapt to complex working conditions, significantly extending the waterproofing lifespan. Furthermore, the main waterproofing body combines elasticity and strength, allowing it to deform to some extent with the settlement of the old and new foundation slabs. Combined with the good toughness of the honeycomb buffer layer, it is less prone to localized tearing during deformation, reducing stress concentration and sealing failure, and ensuring the overall structural integrity.
Owner:HUBEI XIAOYANG DAOJIA TECHNOLOGY SERVICE CO LTD