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390results about How to "Reduce construction difficulty" patented technology

Prefabricated diaphragm wall type fabricated subway entrance and exit structure

The utility model discloses a prefabricated diaphragm wall type assembled subway entrance and exit structure which comprises side wall structures, a prefabricated top plate and a prefabricated bottom plate are arranged between the side wall structures of the entrance and exit, the prefabricated top plate and the prefabricated bottom plate are both connected with the side wall structures through ultrahigh concrete, and the side wall structures are formed by integrating an enclosure structure and a main body structure. The side wall structure comprises prefabricated underground diaphragm walls, and underground diaphragm wall inter-amplitude connecting assemblies are arranged between the adjacent prefabricated underground diaphragm walls. The foundation pit support structure, the waterproof curtain and the side wall of the main body structure are integrated, so that working hours and manufacturing cost are saved. According to the utility model, the connection scheme of the waterstop strip bags, the C / T inter-width connectors and the UHPC concrete wet joints is adopted between the prefabricated underground diaphragm walls, so that the waterproof and guiding effects are achieved. According to the utility model, the longitudinal tensioning connection scheme of the inter-width concave-convex tenons, the elastic sealing gaskets and the prestressed steel bars is adopted between the prefabricated plate widths, so that not only can shearing force be effectively transmitted, but also a water stopping effect can be achieved.
Owner:CHINA RAILWAY DESIGN GRP CO LTD

Anti-winding pipe structure

ActiveCN224649327Uavoid intertwiningevenly spaced
The utility model relates to pipeline technical field, concretely is a kind of anti-winding pipeline structure, including pipeline, the equidistant annular groove being set to the outer wall of pipeline, annular groove is equipped with anti-winding part, and anti-winding part includes two half circular ring fixed plate being set symmetrically up and down, the middle part of the convex surface of two half circular ring fixed plate is equipped with first butt joint block, the front side of first butt joint block is equipped with second thread groove, and the end of two half circular ring fixed plate is connected through arc abutment, the middle part of the convex surface of arc abutment is equipped with second butt joint block, the top of second butt joint block is equipped with third thread groove, and first butt joint block is connected with connecting rod by locking bolt.The anti-winding pipeline structure, through the cooperation of anti-winding part and connecting rod, the position of adjacent pipeline is locked, avoid multiple pipelines in laying or use due to external force or gravity and lead to mutual entanglement.
Owner:HANGZHOU MANULI HYDRAULIC EQUIP CO LTD

A foundation pit support structure

The application discloses a foundation pit supporting structure, relates to the technical field of foundation pit supporting, and comprises a supporting assembly and a reinforcing assembly. The supporting assembly comprises a plurality of base units and a plurality of supporting units. The base units are in abutment with the pit wall on one side of the foundation pit and the pit wall at the bottom. The plurality of supporting units are connected with the plurality of base units, the plurality of supporting units are connected with each other, and the supporting units are in abutment with the pit wall on one side of the foundation pit. The reinforcing assembly comprises a plurality of fixing seats and a plurality of reinforcing pieces. The fixing seats are connected with the foundation on one side of the foundation pit, and the plurality of supporting units are connected with the fixing seats. The reinforcing pieces are located on one side of the supporting assembly, one end of the reinforcing pieces is connected with the fixing seats, and the other end of the reinforcing pieces is connected with the base units. The application can improve the structural strength of the foundation pit supporting structure as a whole and facilitate subsequent construction of construction personnel in the foundation pit.
Owner:MINSHENG GRP URBAN CONSTR DEV CO LTD

A combined feeding system

The utility model relates to garbage treatment technical field discloses a combined feeding system, including frame, the frame front end is provided with feeding mechanism, the frame inside fixedly connected with push mechanism, the frame inside is provided with the material collecting bin, the feeding mechanism includes two big arms connecting shaft, two big arms connecting shaftes all are rotatively connected in the outside of frame, the big arms connecting shaft is rotatively connected with hopper away from frame one end, the hopper outside rotatively connected with connecting rod axle, the connecting rod axle is rotatively connected in the outside of frame away from hopper one end, two big arms connecting shaftes between fixedly connected with the turnover pivot. In the utility model, the scheme does not need to build double -deck station house or deep foundation pit, and the frame is used as the basis support feeding mechanism, push mechanism and material collecting bin, after the feeding mechanism receives the material on the ground, the garbage is poured into the material collecting bin through lifting and overturning, and the push mechanism pushes the garbage to the compression box, and the construction cost and construction difficulty are greatly reduced.
Owner:GUANGXI ZHONGJING ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD

Sealing device for pipeline penetrating well wall

The utility model relates to the technical field of pipeline sealing in a water supply and drainage pipe network, in particular to a sealing device for a pipeline penetrating through a well wall. The waterproof pipeline comprises a pipeline body and a waterproof sleeve, the waterproof sleeve is located on the outer side of the pipeline body, an annular cavity is formed between the waterproof sleeve and the pipeline body and filled with polystyrene foam, and waterproof mortar layers are fixed to the positions, between the left end and the right end of the waterproof sleeve and the pipeline body, of the annular cavity respectively. The waterproof pipeline is reasonable and compact in structure and convenient to use, the polystyrene foam is filled in the annular cavity formed between the waterproof sleeve and the pipeline body, and the waterproof mortar layers are respectively fixed at the positions of the annular cavities between the left end and the right end of the waterproof sleeve and the pipeline body, so that the purpose of sealing is achieved; the sealing device has the advantages of being safe, reliable, good in sealing effect and high in applicability, uneven sedimentation of the pipeline or the inspection well caused by leakage is prevented, and process dependence and construction difficulty are greatly reduced.
Owner:新疆心连心能源化工有限公司

Solar street lamp

ActiveCN224080016UIncrease maintenance flexibilityConducive to standardized mass productionPhotovoltaic supportsLighting support devicesSolar street lightLight head
The utility model relates to a solar street lamp which comprises a street lamp body (10), a solar panel unit (20) and a storage battery assembly (30), the solar panel unit (20) is arranged at the top of the street lamp body (10), and the solar panel unit (20) is electrically connected with the storage battery assembly (30). The street lamp body (10) comprises a lamp pole (11), a mounting arm (12) and a lamp cap (13), and the mounting arm (12) extends along the periphery of the top of the lamp pole (11). The solar panel unit (20) comprises a plurality of solar panels (40), the plurality of solar panels (40) are detachably arranged on the mounting arm (12), and each solar panel (40) is electrically connected with the storage battery assembly (30). The lamp holder (13) is arranged on the side portion of the upper end of the lamp pole (11), the lamp holder (13) is located below the installation arm (12), and the lamp holder (13) is electrically connected with the storage battery assembly (30).
Owner:SHAANXI DADI ZHONGGUANG SMART TECH CO LTD

Height-adjustable SB-grade guardrail

The utility model relates to a height-adjustable SB-grade guardrail which comprises a stand column, an anti-blocking block is fixedly installed on the stand column, a wave-shaped guardrail is detachably and fixedly installed on the anti-blocking block, the anti-blocking block comprises a front side plate and a rear side plate which are symmetrically arranged, and a connecting part is arranged on the upper portion of the side, connected with the wave-shaped guardrail, of each side plate. A top plate is arranged on the side, connected with the wave-shaped guardrail, between the tops of the two side plates, a mounting cavity is formed in the side, away from the wave-shaped guardrail, of each side plate, the mounting cavity is defined by a first limiting plate, a second limiting plate and the two side plates, the first limiting plate is fixedly connected between the interiors of the two side plates, and the second limiting plate is fixedly connected between the interiors of the two side plates. The second limiting plate is fixedly connected between the sides, away from the wave-shaped guardrail, of the two side plates. Adjusting hole sets are formed in the positions, corresponding to the mounting cavities, of the stand columns, and mounting hole sets are formed in the side plates. According to the utility model, a height adjusting space is reserved for paving the road surface, the SB-level protection level is maintained, the construction is simple and convenient, the cost is low, the compatibility is strong, and the green road construction concept is met.
Owner:HENAN JIAOTONG DESIGN CONSULTING CO LTD

Multi-stage redundant elevator anti-collision and anti-falling composite brake buffer system

PendingCN122324662AIncrease safety redundancyReduce secondary damageRobotic armControl engineering
This invention discloses a multi-level redundant protection elevator anti-overshoot and anti-fall composite braking and buffer system, including a guide rail electromagnetic adsorption braking module, a directional airflow damping deceleration module, a robotic arm-type safety airbag buffer module, a working condition detection unit, and an intelligent control and power supply redundancy module. The guide rail electromagnetic adsorption braking module includes excitation coils, insulated fixing brackets, and segmented switch units arranged in sections along the elevator's T-shaped vertical guide rail. The directional airflow damping deceleration module includes directional air supply modules and segmented airflow ducts installed at the top of the elevator shaft and on the vertically segmented side walls of the shaft. The robotic arm-type safety airbag buffer module is embedded in the lower surface of the elevator shaft's top floor slab. The working condition detection unit integrates a car speed sensor, a position encoder, a load acquisition unit, an acceleration monitoring unit, an overshoot / undershoot limit prediction switch, and an airbag trigger distance sensor. This invention integrates a three-level progressive protection structure to achieve flexible protection throughout all working conditions and the entire travel distance.
Owner:IFE ELEVATORS +1

Road and bridge crack repairing and fixing structure

This utility model relates to the field of road and bridge construction technology, and in particular to a fixing structure for repairing road and bridge cracks. It includes a cylinder and a road surface. A crack groove is provided at the crack in the road surface for placing the cylinder. A top groove is formed above the crack groove. A vertically placed support is slidably installed inside the cylinder. A waterproof plate is fixedly connected to the top of the support after it slides through the cylinder. An inner cavity is formed at the top of the cylinder. Connecting rods are rotatably connected to both sides of a section of the support located in the inner cavity. A pull rod is rotatably connected to the end of the connecting rod away from the support. A fixing rod is provided at the end of the pull rod away from the connecting rod. This application improves construction efficiency and reduces difficulty through convenient adjustment of the fixing structure. Furthermore, the design of barbs and waterproof grooves enhances structural stability and waterproof performance. The mechanical structure under stress also prevents further cracking, ensuring the quality of the repair work in terms of construction efficiency and long-term stability of the repair effect.
Owner:KUNSHAN YUTENG MUNICIPAL ENG

A cable support having an adjustable cable length arrangement

The utility model discloses a cable support with adjust cable length structure, length adjusting mechanism includes movable plate, and one side upper end and lower end of movable plate all are fixedly connected with guide rod, and guide rod with movable plate is perpendicular to each other in length direction, the bottom surface of guide rod is equipped with a plurality of resistance groove, and every resistance groove all equidistance arrangement along the length direction of guide rod, the outside of guide rod is slid and is sleeved with horizontal support, the bottom surface of horizontal support is close to the side of movable plate and is equipped with the mouth of passing, the top surface of horizontal support is away from the side of movable plate and is fixedly connected with stop projection, the side of movable plate is equipped with push groove, and push groove is consistent with movable plate in length direction, when horizontal support is fixed in the inside of cable well, through moving horizontal support, can support cable in the alignment position of cable pipe, avoid the cable after being straight and bending, in addition to reduce the length requirement of cable, also reduced the construction difficulty.
Owner:CHINA SOUTHERN POWER GRID NEW ENERGY DESIGN RESEARCH INSTITUTE (GUANGDONG) CO LTD

Novel leak-proof thermal insulation pipe joint connecting thermal insulation device

ActiveCN224414691UReduce construction difficultySave manpower and time costInsulation layerThermal insulation
The utility model relates to pipeline anticorrosion and heat preservation technical field discloses novel leakproof heat preservation pipe patching connection heat preservation device, including upper pressure plate, the upper pressure plate left part bottom side all are fixedly connected with the rotating plate, the rotating plate inboard swing joint has the pivot, the pivot left and right two ends inboard all swing joint has the fixed plate, the fixed plate bottom side is fixed with the lower pressure plate, the upper pressure plate inboard slide connection has the electric heat melting cover, the electric heat melting cover outside fixedly connected with the roof, the electric heat melting cover inboard is equipped with a plurality of fixed grooves, the upper pressure plate top side slide connection has the foaming spray head, the foaming spray head top side fixedly connected with the guide pipe, the guide pipe rear end fixedly connected with the inlet pipe. In the utility model, through the upper and lower pressure plate clamping and positioning electric heat melting cover, electricity makes it melt and is bonded fixed with the pipe orifice, pours into foaming material again and recovers the heat preservation layer, realizes the integration patching processing of leakproof and heat preservation.
Owner:QINGDAO BANGDELI THERMAL WORKING EQUIP CO LTD

Arch bar connecting structure

The utility model provides an arch bar connecting structure, which relates to the field of agricultural greenhouse building, comprises a first arch bar, a first connecting hole is formed in the first arch bar, and solves the problems that the existing arch bar connecting mode generally adopts welding, bolt connection and the like, although the connection is firm in the welding mode, professional welding equipment and technicians are needed, and the construction cost is low. In order to solve the problems that in the prior art, the construction process is complex, stress concentration is likely to happen to welding points, the structural strength is reduced, and meanwhile later maintenance and disassembly are extremely inconvenient, anti-dislocation insertion strips and guide insertion grooves are matched in a modularized insertion mode, limiting insertion strips and limiting sleeves are matched in a modularized insertion mode, and positioning can be rapidly completed without professional tools; the fixing bolts and the limiting nuts are easy to disassemble and assemble, the construction difficulty is greatly reduced, compared with the limitation that professional equipment and technicians are needed in a traditional welding mode, the structure can remarkably improve the installation efficiency, parts can be separated only by unscrewing the limiting nuts during disassembly, and later maintenance of the greenhouse is facilitated.
Owner:SHANDONG FUSHOU AGRICULTURAL DEVELOPMENT CO LTD

A method for assembling a lightweight derrick

This invention proposes a method for assembling a lightweight derrick, comprising the following steps: preparing an assembly site and configuring embedded ground bells; disassembling the derrick body into four components: upper, upper right, lower left, and lower right, respectively labeled a, b, c, and d; horizontally assembling components c and d, pre-tightening structural bolts; vertically assembling components b, c, and d together; horizontally assembling component a, installing outfitting parts, and erecting the assembly; hoisting component a onto components b, c, and d; and installing and laying pipelines, cables, and equipment between the components to complete the derrick assembly. This invention provides clear visibility of the straightness, verticality, and overall dimensions of the main structure in a horizontal configuration, allowing for more precise and clear control; it grounds high-altitude operations, greatly reducing construction difficulty and improving efficiency; it is applicable to the assembly of all lightweight derricks, has wide applicability, and improves the safety and efficiency of the entire construction process.
Owner:CSSC HUANGPU WENCHONG SHIPBUILDING CO LTD

Fireproof brick wall shelf

The utility model discloses a fireproof brick wall shelf, which belongs to the technical field of constructional engineering and comprises a wall body built by a plurality of concrete blocks, a longitudinal reinforcing plate and a transverse reinforcing plate are arranged in the wall body, the upper end and the lower end of the longitudinal reinforcing plate are respectively connected with a top connector and a bottom connector, and the outer side of the transverse reinforcing plate is connected with an outer side connector. The inner side of the wall body is connected with an inner side connector and is connected with a longitudinal reinforcing plate through the inner side connector, the longitudinal reinforcing plate is further provided with an inner side wall pull rod, and the outer side of the wall body is further provided with an outer side wall pull rod. According to the structure, the purpose of reducing material cost and weight is achieved, all the parts can be installed on a construction site and connected with the adjacent concrete blocks respectively, the whole process does not need additional equipment assistance, and therefore construction cost and difficulty are reduced, construction efficiency is improved, safety accidents can be reduced, and in addition, the construction quality is improved. And the whole fireproof brick wall shelf can be subjected to a fireproof test, and can meet the fireproof requirement of 4 hours at most and the STC50 sound insulation requirement.
Owner:林太魁

Oilfield polymer injection concentric three-channel tubing

A kind of oilfield polymer injection concentric three-channel oil pipe, it includes: coaxially nested three-layer pipe body: outer tube is set in the middle layer pipe of outer tube, and center tube is set in the middle layer pipe;Three independent channels: the first channel is formed by the inner cavity of the center tube, the annular space between the center tube and middle layer pipe forms the second channel, the annular space between the middle layer pipe and outer tube forms the third channel;Channel bridge assembly: be provided with at pipe body both ends, including upper annular channel bridge and lower annular channel bridge;The channel bridge assembly is provided with axial through hole and radial opening respectively connecting first channel, second channel, third channel;Dismountable sealing connection structure: the utility model novel structure, through the unique three-channel design, three different oil layers can be simultaneously carried out three-layer quality boosting injection polymer, improve the pertinence and effectiveness of polymer injection liquid, and then improve oil recovery.
Owner:九环机械股份有限公司

A perforated folded plate for a sedimentation basin and a sedimentation basin with an inclined installation of the perforated folded plate

ActiveCN224388139Uincreased turbulenceImprove settlement performanceSedimentation separationSludgeOutfall
The utility model belongs to water treatment technical field, specifically discloses a perforated folded plate for sedimentation tank and the sedimentation tank of oblique installation perforated folded plate. The perforated folded plate is the plate -like structure of undulating extension and includes at least three folded plate tops of undulating top end and three folded plate bottoms of undulating bottom end, and the folded plate top of perforated folded plate is adjacent to the folded plate bottom and is provided with a plurality of folded plate holes on or close to the folded plate top. The water inlet and the water outlet of the sedimentation tank are separately arranged in the lower part and the upper part of the pool body, a folded plate support is fixed above the water inlet in the pool body, a plurality of aforementioned perforated folded plates are obliquely arranged on the folded plate support in the pool body, the folded plate top of the perforated folded plate faces upwards and the folded plate bottom faces downwards. The perforated folded plate top of the utility model is provided with the folded plate hole, and the sewage can flow upwards through the folded plate hole, which not only can increase the sedimentation area, but also can realize automatic sludge discharge, has the characteristics of simple structure, wide application range, high sedimentation efficiency and automatic sludge discharge.
Owner:KUNMING ENG & RES INST OF NONFERROUS METALLURGY

Electromagnetic brake

The utility model discloses an electromagnetic brake which comprises a friction plate connected to a motor, an armature and a brake disc which are arranged on the two sides of the friction plate, and a brake coil shell arranged on the side, away from the brake disc, of the armature, and an extension plate extends out of the side, facing the brake coil shell, of the brake disc. And the end part of the extension plate is matched with the end surface of the brake coil shell in a pushing manner so as to define mounting spaces of the friction plate and the armature. Thereby, the extension plate directly abuts the end face of the brake coil housing at its specific length as a reference length, which directly determines the total distance from the brake coil housing (reference surface) to the brake disc. Compared with the prior art in which one-by-one measurement is needed, multiple gaps between the friction plate and the brake disc, between the armature and the friction plate and the like are calculated to realize assembly. According to the embodiment of the invention, the overall space gap is limited based on the length of the extension plate, so that the assembly efficiency is remarkably improved, and the overall construction difficulty is effectively reduced.
Owner:CHENGDU XINDELI TECH CO LTD

Fabricated steel structure and mounting method

The invention relates to the technical field of the building industry, and discloses a fabricated steel structure and an installation method, the fabricated steel structure comprises frame columns and frame beams, and the frame columns and the frame beams are connected in a matched mode; the modular node units are detachably connected with the frame columns and the frame beams respectively; the modularized joint unit comprises a first connecting plate and a second connecting plate, the sides, deviating from each other, of the first connecting plate and the second connecting plate are suitable for being connected with one ends of the adjacent frame columns correspondingly, and a box type steel column section is arranged between the first connecting plate and the second connecting plate; the two ends of the box type steel column section are connected with the first connecting plate and the second connecting plate correspondingly. The modularized joint units are further provided with I-shaped steel beam ends, and the two I-shaped steel beam ends are connected with the two ends of the box type steel column section respectively in the extending direction of the frame beam.
Owner:CHINA CONSTR STEEL STRUCTURE ENG CO LTD

Roof connecting assembly, roof mounting device and roof system

The utility model belongs to the technical field of building structures, and particularly relates to a roof connecting assembly, a roof mounting device and a roof system.The roof connecting assembly is used for connecting a main body structure and roof additional equipment and comprises a plurality of support bodies, and the support bodies penetrate through a roof waterproof layer of a roof structure and are connected with the main body structure and the roof additional equipment; waterproof layer clamping parts are formed between the support bodies connected with the main body structure and the mounting base, waterproof layer clamping parts are formed between the adjacent support bodies, each waterproof layer clamping part correspondingly clamps one roof waterproof layer, and the support bodies seal the penetrating holes in the roof waterproof layers, so that the roof waterproof layers do not need to be turned up and closed up, and the roof waterproof layers are not prone to being damaged. Therefore, the construction difficulty of overlapping construction of the multiple waterproof layers of the roof structure provided with the roof additional equipment is reduced, and the working efficiency is improved.
Owner:KESHUN WATERPROOF TECH CO LTD

Cable truss

A cable truss, including upper chord cable, lower chord cable, cable clamp, cable clamp support arm, cable end connecting block; the two ends of the cable clamp support arm are respectively provided with a cable clamp, the cable clamp is a cylindrical structure as a whole, which is composed of upper spiral body, middle spiral body and lower spiral body, the joint of the upper spiral body and the middle spiral body is provided with an upper chord cable through hole, and the joint of the middle spiral body and the lower spiral body is provided with a lower chord cable through hole; a plurality of telescopic locking pin shafts are arranged in the upper spiral body and the lower spiral body in the vertical direction, the middle spiral body is provided with locking pin shaft insertion holes corresponding to the locking pin shafts, and the locking pin shafts are inserted and matched with the locking pin shaft insertion holes. The application solves the design problem of the cable net node, reduces the adverse effect of the unbalanced force between the cable nets on the overall structure, increases the force rationality of the node and the safety of the whole cable net, reduces the processing and manufacturing cost and the construction difficulty, and can be applied to the "sky round place" structure of the "Dream of Red Mansions" drama fantasy garden engineering.
Owner:CHINA CONSTR FIRST BUREAU GRP NORTH CHINA CONSTR CO LTD +1

Prefabricated building wall heat preservation and sound insulation board

The utility model provides a prefabricated building wall heat preservation and sound insulation board, and belongs to the technical field of heat preservation and sound insulation boards, the prefabricated building wall heat preservation and sound insulation board comprises a body, the body is used for heat preservation and sound insulation, a reinforcing rib is arranged on the surface of the body, the reinforcing rib and the body are integrally formed, and the reinforcing rib and the body are integrally formed. The reinforcing ribs are used for reinforcing the structure of the body, the reinforcing ribs are arranged on the surface of the body in a cross shape or a shape like a Chinese character'mi ', and the width of the middle portion of each reinforcing rib is larger than that of the two ends of each reinforcing rib; the reinforcing ribs are fusiform or rectangular, and protrusions with the width larger than that of the reinforcing ribs are arranged in the middles of the reinforcing ribs. The problem that the top and the middle of a traditional prefabricated wall heat-insulation and sound-insulation board fall off after being used for a long time, and the heat-insulation and sound-insulation effects of the heat-insulation and sound-insulation board are affected can be solved.
Owner:QINGDAO BEIYANG ARCHITECTURAL DESIGN CO LTD

An intelligent monitoring system for layered settlement of soil body

The present application relates to the technical field of soil layering settlement monitoring in construction, and specifically discloses a soil layering settlement intelligent monitoring system, which comprises a shell, a monitoring part arranged in the shell and the land to be measured, the monitoring part being used to acquire the settlement information in the land to be measured, a communication part arranged inside the monitoring part, the communication part being used to send the settlement information in the land to be measured monitored by the monitoring part to a terminal, and a control module electrically connected with the monitoring part and the communication part, the control module being used to control the monitoring part and the communication part. The control module analyzes the settlement information of the land to be measured acquired by the monitoring part, and sends the result to the terminal through the communication part, so that the user can quickly find the land settlement problem through the terminal and take necessary measures for treatment, thereby improving the monitoring efficiency of land settlement, and effectively ensuring the safety and stability of the land.
Owner:SHANGHAI TONGNA CONSTR ENG QUANTITY SURVEYING CO LTD +1

A rapid pouring mold for assembling a prefabricated monolithic bidirectional dense-rib composite floor slab concrete bottom plate

The utility model discloses a kind of rapid pouring mould of assembly integral type two-way dense rib composite floor slab prefabricated concrete bottom plate, including bottom plate, first intermediate plate, second intermediate plate, first side edge plate, second side edge plate and third side edge plate.The pouring mould in the utility model has fast pouring speed, is easy to vibrate, easy to demould, can greatly reduce construction error and construction difficulty, while improving pouring efficiency, realize the promotion of assembly building efficiency.
Owner:NANJING COMM INST OF TECH

Structural joint waterstop structure for concrete gravity dam

The utility model discloses a structural joint waterstop structure for concrete gravity dam is configured in connecting concrete dam body, and the concrete dam body has at least one failure waterstop, and the concrete dam body is provided with first saddle joint grout stop plug hole, saddle joint seepage resistance plug hole, second saddle joint grout stop plug hole in turn and interval in the direction of being away from failure waterstop, and the structural joint waterstop structure for concrete gravity dam includes: first grout stop plug body, seepage resistance plug body and second grout stop plug body, and first grout stop plug body is sealed and is embedded in first saddle joint grout stop plug hole, and seepage resistance plug body is sealed and is embedded in saddle joint seepage resistance plug hole, and second grout stop plug body is sealed and is embedded in second saddle joint grout stop plug hole. The utility model can effectively solve the problem that underwater construction is difficult and waterstop effect is difficult to guarantee due to the repair of failure waterstop by using the underwater grouting scheme of upstream face.
Owner:WUHAN CHANGJIANG KECHUANG TECH DEV +3

Top sealing assembly for immersed tunnel final joint and joint tool

The utility model belongs to the technical field of immersed tunnel butt joint, and discloses a top sealing assembly and a joint tool for a final joint of an immersed tunnel. The top sealing assembly comprises a top sealing frame, a top shell and a manhole pipe, and the top sealing frame is used for being arranged at the top of a gap between every two adjacent immersed tubes and used for assisting in forming a top sealing plate of a final joint of the immersed tunnel. The top shell covers the top sealing frame and is detachably connected with the top sealing frame, and a moving space capable of containing constructors is formed between the top shell and the top sealing frame. One end of the manhole pipe is connected with the top shell, the other end of the manhole pipe can extend to the water surface, and a channel in the manhole pipe is communicated with the activity space. By adopting the top sealing assembly for the final joint of the immersed tunnel, a constructor enters the moving space from the manhole pipe for water stop inspection, and the safety risk can be reduced; and meanwhile, constructors can pour the top sealing frame in the movable space above the top sealing frame to form the top sealing plate, so that the construction difficulty and the construction cost are reduced.
Owner:GUANGZHOU SALVAGE BUREAU

Early-warning supporting device for collapse of slope in human settlement environment

The utility model discloses a human settlement environment slope collapse early warning supporting device which comprises a plurality of supporting columns and a plurality of collapse protection plates installed on one sides of the supporting columns, and supporting mechanisms are installed on the other sides of the supporting columns and used for supporting and reinforcing slope protection positions. According to the utility model, through the cooperative work of the inclination sensor, the displacement sensor and the stress sensor, the slope deformation displacement, inclination and stress change conditions can be accurately monitored in real time. Abnormal data can be captured in time at the early stage of collapse risk of the side slope, and an early warning signal is sent out quickly when abnormal deformation occurs. Therefore, precious emergency treatment time is won for residents and related personnel around the human settlement environment, preparation work such as personnel evacuation and property transfer is made in advance, casualties and property losses possibly caused by slope collapse in the human settlement environment are effectively reduced, and the safety of the human settlement environment is guaranteed to the maximum extent.
Owner:HOHAI UNIV

A rotary air preheater with multilayer annular heat pipes

The application discloses a rotary air preheater with a multilayer annular heat pipe, relates to the technical field of air preheating, and comprises an outer shell, an inner rotor, a center cylinder, a flue gas inlet, an air outlet, a flue gas outlet, an air inlet, a disturbance mechanism, a ring pipe group, a driving piece and a corrugated plate group. The center cylinder is coaxially arranged at the center position in the outer shell, the inner rotor is rotationally arranged on the outer wall of the center cylinder, the outer wall of the inner rotor is rotationally connected with the inner wall of the outer shell, the inner rotor is driven by the driving piece located at one side of the outer shell, the flue gas inlet and the air outlet are formed in the top end of the outer shell, and the flue gas outlet and the air inlet are formed in the bottom end of the outer shell. The corrugated plate group and the ring pipe group are arranged in the inner rotor, and a plurality of disturbance mechanisms are circumferentially arranged on the inner wall of the ring pipe group. The flue gas and the air are transversely washed to the annular heat pipe, the heat exchange coefficient of the flue gas and the air is strengthened, the deposition rate and deposition amount of ammonium bisulfate on the heated surface can be significantly slowed down, and the safety risk is reduced.
Owner:XI'AN PETROLEUM UNIVERSITY