1779results about "Vertical ducts" patented technology

A trench drain includes a trench, a grating seat and a grating hingedly connected to the trench. The trench has a base wall with peripheral side walls extending upwardly therefrom and an outwardly-extending peripheral flange. The grating seat is configured to receive the grating. The peripheral side walls of the trench have a pair of opposing elongated slots formed therein and the grating has a pair of posts on opposing ends thereof. Each of the pair of posts on the grating are received in a respective one of the pair of opposing elongated slots of the trench to establish an axis of rotation.

The utility model discloses a high-altitude construction waste conveying device which comprises a conical barrel, a fixing assembly, a chain, a dustproof assembly, a first buffering assembly, a second buffering assembly and a supporting assembly, the fixing assembly is arranged outside the conical barrel, the chain is arranged on the fixing assembly, and the dustproof assembly is arranged on the supporting assembly. The dustproof assembly comprises a fixing ring bonded to the inner wall of the conical barrel, dustproof cloth arranged on the inner side of the fixing ring, a cavity formed in the dustproof cloth and an elastic band arranged in the cavity, and the first buffer assembly comprises a fixing rod arranged on the inner side of the conical barrel, a spring arranged on the top of the fixing rod and an ejector rod arranged on the top of the spring; the second buffering assembly is arranged on the inner side of the conical barrel, and the supporting assembly is arranged on the conical barrel. Falling construction waste can be buffered through the first buffering assembly and the second buffering assembly, the situation that the conical barrel is smashed by large construction waste due to large kinetic energy is avoided, then the dustproof effect is achieved through the dustproof assembly, and use is convenient.

The utility model discloses a mechanical pressurized air supply structure for an antechamber of a building, comprising an air inlet pipe, a pressurized air supply fan, an electric regulating valve, a 70°C fire damper, an electric normally closed valve, a pressurized air supply port, a residual pressure sensor, an air supply main pipe and an air supply branch pipe, wherein the air inlet pipe and the pressurized air supply fan are arranged in a special fan room, and the air supply main pipe is laid in a civil engineering air shaft; the air supply branch pipe passes through a partition wall of the civil engineering air shaft and is laid on the top of an upturned beam bottom of an antechamber, the air supply branch pipe is connected with the air supply main pipe, the air inlet pipe is connected with the pressurized air supply fan, the pressurized air supply fan is connected with the air supply main pipe through the electric regulating valve and the 70°C fire damper in sequence, and the air supply branch pipe entering the antechamber of each floor is provided with an electric normally closed valve and a pressurized air supply port. The utility model arranges an upturned beam at the partition wall of the civil construction air shaft so that the top of the pressurized air supply branch pipe is close to the upturned beam and the bottom is almost level with the bottom of the top plate of the front room, and is laid to connect to the front room. The air duct occupies a small net height of the front room, and at the same time, a suspended ceiling decoration is adopted to eliminate the influence of the air supply branch pipe extending into the front room on the visual impact of the front room.

The utility model relates to a lighting, heat-insulating and waterproof window well of a building and belongs to the technical field of window wells. Comprising a basement wall and a lighting assembly, window wells are arranged on the basement wall, the lighting assembly comprises lighting windows and suspended ceilings, the lighting windows and the suspended ceilings are located at the tops and the bottoms of the window wells respectively, the window wells comprise the upper window wells and the lower window wells, and the lower window wells are in a horn shape; a waterproof heat preservation assembly is arranged between the window well and the basement wall, a drainage pipe penetrating through the waterproof heat preservation assembly is arranged in the basement wall, the waterproof heat preservation assembly comprises a waterproof roll layer, a cement mortar smearing layer and a graphite polystyrene board, and the cement mortar smearing layer and the graphite polystyrene board conduct heat preservation on the window well. According to the building daylighting heat-preservation waterproof window well, the daylighting efficiency and uniformity are improved through the design of the outwards-convex-pyramid-shaped daylighting window and the horn-shaped lower window well, the waterproof heat-preservation assembly is combined with the graphite polystyrene board, heat transfer is effectively prevented, the heat-preservation performance is enhanced, and meanwhile the waterproof effect is improved through the waterproof roll layer and the cement mortar smearing layer.

The utility model discloses a vertical shaft smoke exhaust pipeline, which is applied to the field of pipelines and comprises a first pipeline, a second pipeline is arranged at the bottom of the first pipeline, locking bolts penetrate through the tops of the two sides of the second pipeline, and threaded holes are formed in the bottoms of the two sides of the first pipeline and the second pipeline. Protection plates are symmetrically arranged on the two sides of the first pipeline and the two sides of the second pipeline, first fixing springs are connected between the two sides of the first pipeline and the two sides of the second pipeline and the protection plates in a bolted mode through spring fixing pieces, a filter screen plate is placed at the top of the first pipeline, and mounting plates are symmetrically welded to the top of the filter screen plate; a movable plate is arranged in the mounting plate, and a limiting block is welded to one side of the movable plate, so that a side protection function can be achieved, direct collision between a pipeline and a well wall is avoided, the safety is high, meanwhile, a filter plate can be conveniently and rapidly disassembled and assembled, the operation is simple and convenient, the cleaning efficiency of personnel is improved, and the practicability is high.

The utility model relates to the technical field of ventilation pipelines, and discloses a smoke prevention and exhaust air pipe used in a vertical piping shaft, which comprises a smoke prevention and exhaust air pipe body and mounting boxes fixed on the front side and the rear side of the inner wall of the smoke prevention and exhaust air pipe body, and further comprises driving motors fixed at the bottoms of the inner walls of the mounting boxes, a threaded rod is rotationally connected to the upper portion of the inner wall of the mounting box, the bottom end of the threaded rod is fixedly connected with an output shaft of the driving motor, and a lifting block is slidably connected to the upper portion of the inner wall of the mounting box. The air pipe has a cleaning function, the inner wall of the pipeline can be automatically brushed at regular intervals through the built-in automatic cleaning system, the cleaning efficiency is greatly improved, the system shutdown time caused by manual cleaning is shortened through automatic cleaning, continuous and effective operation of a smoke prevention and exhaust system is guaranteed, and the service life of the air pipe is prolonged. Oil dirt and impurities on the inner wall of the pipeline are regularly cleaned, the pipeline can be kept unobstructed, and the smoke exhaust efficiency of the smoke prevention and exhaust system is improved.

The invention discloses a staircase structure for installing an elevator in a staircase, and the staircase structure can be arranged in the staircase of an old community. The elevator shaft is arranged close to the stairway on one side and does not occupy a stairway platform in the middle of the stairway, the stairway located at the position of the elevator shaft is a folding stairway, and the folding part can be erected to be parallel to the elevator shaft when the stairway is not used. When the stair needs to be used, the elevator car can be placed on the bottom layer or the top layer, the foldable part vertically arranged outside the elevator is put down, the stair with the foldable part enters the elevator shaft, the stair with the foldable part abuts against the wall in the elevator shaft, and the travel is stably supported so that the requirements of fire fighting, emergency and escape can be met.

The utility model relates to the technical field of underground garage exhaust fans, and particularly discloses a multi-cavity assembly type electromechanical integrated air and smoke exhaust machine room for an underground garage, which comprises a body, an overhaul opening is arranged at the bottom of the body, one side of the overhaul opening is connected with an overhaul door, and one side of the body is provided with a carbon monoxide detector. An indicating lamp is arranged on one side of the body, a connecting frame is arranged at the top of the body, an air inlet is formed in one side of the body, an air inlet cavity is formed in one side of the interior of the body, a fan cavity is formed in the middle of the interior of the body, an air and smoke exhaust fan is arranged in the middle of the fan cavity, an air exhaust cavity is formed in one side of the interior of the body, and an electric cavity is formed in one side of the body. The two ends of the air and smoke exhaust fan are connected with the air inlet cavity and the air exhaust cavity.

The invention belongs to the technical field of added elevators, and discloses a fast-assembly type added elevator steel structure main body and a preparation and assembly method thereof, and the fast-assembly type added elevator steel structure main body comprises a hoistway, a door frame and a corridor. The hoistway is composed of four vertical stand columns and a plurality of transverse beams, the ends of the beams are connected with the connecting faces of the stand columns through connecting pieces, each connecting piece comprises a pair of triangular pieces formed by three steel plates perpendicular to one another, a first plate is connected with the stand columns, a second plate is connected with the beams, and a third plate is an inclined strut reinforcing rib. The door frame comprises door head steel beams between the front stand columns, sill steel beams and landing door stand columns between the sill steel beams, the corridor is connected with the outer sides of the sill steel beams, and through holes in the ends of the edge beams are matched with kidney-shaped holes of the mounting bases to adjust the position. The square pipe joints of the front stand column and the rear stand column are staggered in position. The device is fast to install, stable in structure, convenient to adjust, convenient to overhaul and maintain and suitable for the elevator adding project of the existing building.

The invention provides an unpowered exhaust hood. The unpowered exhaust hood comprises a base; the supporting assembly is mounted on the base; the air exhaust cap assembly is mounted on the supporting assembly and can rotate relative to the base, and the air exhaust cap assembly comprises a cap body and an air cap supporting mechanism mounted in the cap body; the exhaust hood assembly further comprises a fan mechanism which is installed on the hood supporting mechanism and rotates along with the hood body or the hood supporting mechanism. According to the unpowered exhaust hood, the fan mechanism rotating along with the hood body or the hood supporting mechanism is additionally arranged on the hood supporting mechanism, so that the exhaust efficiency of the unpowered exhaust hood can be improved.

The invention provides a ventilation and safety vertical shaft arrangement system for an underground powerhouse of a hydropower station, which comprises main and auxiliary powerhouse holes of the underground powerhouse, a main transformation hole, a tail gate hole and a factory access hole, and the ventilation and safety hole and the factory access hole are communicated with the ground and are communicated with the main and auxiliary powerhouse holes and the main transformation hole. The opening of the ventilation and safety hole is communicated to the ground and serves as an excavation construction channel at the upper part of the main and auxiliary factory building hole, the ventilation and safety hole is respectively communicated with a main transformer hole and a tail gate hole through a main transformer air inlet hole and a tail gate ventilation hole, and a ventilation and safety vertical shaft is arranged in the middle of the ventilation and safety hole and serves as a cavity outlet after water storage of a lower reservoir; and a concrete plug is arranged at a hole section between the ventilation and safety hole opening and the ventilation and safety vertical shaft. The length of the ventilation and safety hole can be shortened, hub arrangement is optimized, project investment is saved, the construction period is shortened, and meanwhile the functions of vehicle passing in the construction period and air inlet, air exhaust and safe evacuation in the operation period can be achieved.

The utility model relates to the technical field of air shafts for civil air defense engineering, and discloses an air shaft structure for civil air defense engineering design, which comprises an air shaft body, the top of the air shaft body is fixedly connected with a top plate, a disassembly structure is arranged in the air shaft body, an in-shaft channel is arranged in the air shaft body, and an escape structure is arranged in the air shaft body. According to the air shaft, the disassembling structure is arranged in the air shaft body, the sealing cover plate can be opened through the first handle, the connecting block at one end of the ventilation shutter is pulled out firstly, then the connecting block at the other end of the ventilation shutter is pulled out, and therefore the whole ventilation shutter can be disassembled, and the ventilation shutter is thoroughly cleaned; due to the fact that the escape structure is arranged in the air shaft body, when an emergency occurs, people in the civil air defense project can climb up through the two escape ladders in the air shaft body, and the people can leave the civil air defense project by opening the movable cover plate.

A dark toilet exhaust passage concrete one-time forming structure comprises a large corrugated pipe and multiple sets of outer aluminum alloy modules, a cavity is formed among the multiple sets of outer aluminum alloy modules, the large corrugated pipe is arranged in the middle of the interior of the cavity, and the large corrugated pipe is fixedly connected with the outer aluminum alloy modules through fixing assemblies. The utility model has the beneficial effects that the concrete material is adopted for pouring, so that the concrete exhaust passage has better strength, durability and plasticity, a material basis is provided for manufacturing a one-step formed full-concrete exhaust passage, and the exhaust passage which is firm in structure, smooth in surface and good in sealing property can be manufactured; compared with the traditional material, the concrete material is more environment-friendly, not only has excellent ventilation performance, but also can reduce the building energy consumption and improve the indoor air quality, and adopts the form of the prefabricated member, so that the field installation is simple, convenient and rapid, the construction period is greatly shortened, and meanwhile, the material cost is relatively low, so that the building cost can be effectively controlled.

An elevator system includes a hoistway; an elevator car configured to travel in the hoistway; a pit located at a bottom of the hoistway; a pit safety interface located in the pit; a pit emergency switch located in the pit; a reset device located outside the hoistway; a safety chain contact that is part of a safety chain of the elevator system; and a sensor assembly configured to initiate opening the safety chain contact to disable motion of the elevator car upon detection of a person in the pit and the pit safety interface not being activated.

The floor overhead layer module comprises an upper floor, a lower floor and a plurality of overhead supporting columns, the overhead supporting columns are regularly distributed on the upper surface of the lower floor, and a plurality of first mounting grooves in one-to-one correspondence with the overhead supporting columns are concavely formed in the lower surface of the upper floor; the tops of the multiple overhead supporting columns are installed in the corresponding first installation grooves so as to support and fix the upper floor, and then an overhead space is formed between the lower floor and the upper floor. According to the technical scheme, the technical problems that an existing ground air supply duct structure is difficult to construct, only small-air-volume circulating air supply can be conducted, and the circulating air volume or the circulating number of times of an all-air system cannot be met can be effectively solved.

The invention relates to an assembly type integrated fire-fighting smoke exhaust fan room structure which comprises a machine room enclosure bulkhead cylinder body which is provided with a bottom plate, a first side wall and a second side wall, the first side wall and the second side wall are connected with the bottom plate and vertically arranged in parallel, and the two ends of the machine room enclosure bulkhead cylinder body in the horizontal direction are provided with a first opening end and a second opening end which are oppositely arranged correspondingly; the end cover side wall is provided with a first end cover and a second end cover which are respectively arranged at the first opening end and the second opening end; smoke suction and exhaust ports are formed in the first end cover and the second end cover and are used for being connected with a ventilation pipeline; the machine room access door is arranged on the first side wall or the second side wall and can be opened and closed; the fan is arranged in an internal space formed by the machine room enclosure bulkhead cylinder body, the first end cover and the second end cover; the machine room enclosure bulkhead cylinder body, the first end cover, the second end cover and the machine room access door are all of a prefabricated concrete structure. The fabricated integrated design is adopted, the cost is low, the self weight is light, fireproof performance is achieved, and the advantages of being stable, reusable, attractive and the like are achieved.

The invention discloses an inorganic silicon crystal heat insulation plate for a smoke prevention and exhaust air duct, which is prepared by the following steps: raw material treatment, mixing and stirring, forming, drying and curing, high-temperature sintering and surface treatment and inspection: after sintering is completed, the surface of the plate is ground to be flat, and rough and uneven parts on the surface are removed; and finally, performing quality inspection on heat conductivity coefficient, compressive strength and fire resistance. According to the invention, by optimizing the ratio of the silicon crystal powder to the aluminum oxide, the heat conduction loss can be effectively reduced, the structural integrity of the plate can be ensured when the plate bears external pressure, the plate is suitable for high-strength and long-term use industrial application environment, the service life of the product is prolonged, and the application value of the product in the field of fireproof safety is further improved.

According to the new energy aluminum foil factory building structure, a new energy aluminum foil factory building comprises a clean area and a non-clean area, the clean area comprises a precise cutting area and a packaging area, and the precise cutting area and the packaging area are arranged in a new energy aluminum foil production factory building in a nested mode; an equipment installation platform covering the whole precise cutting area or packaging area is arranged on the upper portion of the precise cutting area or packaging area, a clean area combined air conditioner, a rolling slitting area micro-positive pressure air supplement unit and a smoke exhaust fan are fixedly arranged on the upper portion of the equipment installation platform, and an air supply pipeline, a smoke exhaust pipeline and an air return pipeline are fixedly arranged on the lower portion of the equipment installation platform. The device has the advantages of being large in equipment installation area and short in pipeline installation hanging bracket length, the pipeline length can be effectively shortened through optimization design, and the problems that an existing new energy aluminum foil clean plant is high in long-term operation energy consumption, complex in construction and installation, large in vibration noise, large in occupied area and the like are solved.

The utility model discloses an assembly type residence kitchen and bath exhaust passage and exhaust passage system, which comprises an exhaust passage, a Y-shaped vertical partition plate is arranged in the exhaust passage, and the exhaust passage is divided into a left main exhaust passage, a right main exhaust passage and a middle auxiliary exhaust passage by the vertical partition plate. An exhaust port communicated with the left main exhaust passage or the right main exhaust passage is formed in the vertical partition plate in the auxiliary exhaust passage, and an air guide partition plate playing an air guide role is arranged at the exhaust port. Compared with the prior art, the overall structural stability of the exhaust pipeline can be improved through the vertical partition plate, the exhaust pipeline can meet the flexible impact resistance index requirement, meanwhile, machining design of the large-diameter exhaust pipeline is facilitated, independent exhaust of the left side main exhaust pipeline and the right side main exhaust pipeline does not affect each other, and the service life of the exhaust pipeline is prolonged. The exhaust passage of the auxiliary exhaust passage of each floor can be flexibly designed as required, and the auxiliary exhaust passage is divided into independent exhaust passages through the air guide partition plates, so that the influence of flue gas between floors can be effectively avoided.

The utility model discloses construction waste turnover equipment for high-rise building construction, which relates to the technical field of high-rise waste turnover and comprises a waste pipeline. Construction waste is put in from the interior of the feeding hopper, the construction waste slides to the supporting plate on the inner wall of the waste pipeline, then the servo motor is started, the supporting plate drives the construction waste at the top end to descend synchronously, and through descending of the supporting plate, huge impact force generated when the construction waste falls from a high layer can be effectively avoided; when a limiting groove in a fixing shaft is embedded into a limiting block, a supporting plate is rotationally and obliquely opened through a circular shaft under the gravity of the construction waste, then the construction waste better falls into a material receiving vehicle from a waste pipeline, and the function of transferring the high-rise construction waste is achieved; and a construction site can be kept clean and orderly, and construction obstacles caused by garbage accumulation are reduced, so that the construction progress is accelerated, and the overall construction efficiency is improved.

The invention discloses an existing residence flat-layer home-entry low-influence added elevator structure and method.The added elevator structure is arranged on the side, opposite to a staircase, of an existing main body structure and comprises an elevator hoistway arranged within the width range of an external longitudinal window wall between two buildings of the existing main body structure and reliably connected with the existing main body structure; the elevator front rooms are arranged on the side, away from the existing main body structure, of the elevator hoistway, emergency rescue manholes are formed in a floor slab of each layer of the elevator front room and a roof of the uppermost layer of the elevator front room, and crawling ladders are arranged at the emergency rescue manholes; and the external expansion rooms are formed by outward expansion of living rooms or living rooms of adjacent buildings of two houses of the existing main body structure, and the external expansion room on each floor is communicated with the elevator front room on each floor through an entrance door. The elevator shaft is arranged on the opposite side of the staircase and in the outdoor space within the width range of the wall between the two windows, the elevator front room and the living room are expanded outwards, barrier-free travel is achieved, and the living environment is improved.

The utility model discloses a waterproof structure for constructional engineering, which belongs to the technical field of waterproof for constructional engineering and comprises a ventilation pipe, the top of the ventilation pipe is sleeved with a connecting groove, the connecting groove is fixedly connected with a quick-release pipe, a waterproof pipe is inserted into the quick-release pipe, the waterproof pipe is fixedly connected with a plurality of supporting rods, and the supporting rods are fixedly connected with the top of the ventilation pipe. A rain baffle is fixedly connected to the supporting rod, a filter screen plate is fixedly connected to the outer portion of the supporting rod, two fixing plates are fixedly connected to the outer portion of the quick release pipe, through holes are formed in the fixing plates, and an inserting mechanism used in cooperation with the fixing plates is installed on the outer portion of the waterproof pipe. The rain baffle can prevent rainwater from directly entering the ventilation pipe, the filter screen plate can filter out sundries and prevent the sundries from entering the ventilation pipe, the whole structure can be firmer through the inserting mechanism, meanwhile, installation and disassembly are convenient and fast, maintenance is more convenient and fast, and it is guaranteed that the ventilation opening is maintained smoothly.

The utility model discloses a fore shaft ring beam structure, which belongs to the technical field of vertical shaft construction, and comprises a base layer mounting mechanism, the lower end of the base layer mounting mechanism is in bolted connection with the ground, the two sides of the base layer mounting mechanism are in bolted connection with other base layer mounting mechanisms, and the upper end of the base layer mounting mechanism is in bolted connection with an upper layer mounting mechanism. The upper end and the two sides of the upper-layer mounting mechanism are connected with other upper-layer mounting mechanisms through bolts, according to the improved lock mouth ring beam structure, base layer building of a lock mouth ring beam is achieved through the base layer mounting mechanism, building of a supporting body of the lock mouth ring beam is achieved by mounting the upper-layer mounting mechanism layer on the base layer mounting mechanism, and after building is completed, the upper-layer mounting mechanism layer is installed on the upper-layer mounting mechanism layer. Due to the fact that the interior of the side wall of the fore shaft ring beam is sealed, the strength of the fore shaft ring beam can be enhanced by filling cement, the height of the fore shaft ring beam can be adjusted by changing the number of layers of the upper layer installation mechanism, installation is easy through the splicing structure, and therefore the construction efficiency and effect can be improved conveniently.

The wall structure comprises a wall body, a pipe distribution groove is formed in the wall body, a first drainage pipe is arranged in the pipe distribution groove, a second drainage pipe communicated with the first drainage pipe is arranged in a floor, the first drainage pipe comprises an outer pipe and an inner pipe, the outer pipe and the inner pipe are coaxially arranged, and an airflow layer is clamped between the outer pipe and the inner pipe. A plurality of scouring structures are arranged on the inner pipe at equal intervals and communicate with the airflow layer and the inner space of the inner pipe. A pneumatic device is installed on the inner wall of the wall body and communicates with the airflow layer through an air conveying pipe. Foreign matters and oil stains attached to the interior of the first drainage pipe can be automatically washed away in a timed mode, the cleaning effect is good, the function of automatically dredging the inner wall of the first drainage pipe in a timed mode is achieved, the cleanliness of the first drainage pipe is guaranteed, the phenomenon that the interior of the first drainage pipe is seriously blocked is prevented, and the service life of the first drainage pipe is prolonged. The maintenance frequency of the first drainage pipe is greatly reduced, and the service life of the first drainage pipe is prolonged.

The utility model relates to a Fab clean room hot exhaust air recovery processing emergency linkage system, which belongs to the technical field of clean room gas circulation and comprises a fresh air inlet pipe, a fresh air supply outlet, a fan filter unit and an exhaust pipe communicated with the outside of a clean room. The recovery pipe is sequentially provided with a circulating fan capable of pumping away hot exhaust air, a cooling mechanism and an air return pipe, the cooling mechanism is a dry coil cooler or a gas-gas heat exchanger or a cold clean gas mixing type cooler, and the system further comprises an automatic control device. The clean air is conveniently recycled, the burden of supplementing fresh air in a clean room is reduced through the recycled clean air, the operation cost of humidity control of a heating ventilation air conditioner is reduced, the cost of cleaning treatment on air is also reduced, and then the production cost is greatly reduced.

The present invention relates to an elevator shaft drag reduction, pressure regulation and energy saving self-adjusting device and its adjustment method, comprising left / right drag reduction, pressure regulation and energy saving devices installed on both sides of the middle of the elevator shaft, the drag reduction, pressure regulation and energy saving device also comprising a displacement sensor, a controller, a speed monitoring device, a windshield, an adjustment plate and a power generation fan, the displacement sensor monitors the position of the car in real time and sends a displacement signal to the controller, the speed monitoring device monitors the wind speed in the shaft in real time and sends a wind speed signal to the controller, the controller sends a control signal to the left / right drag reduction, pressure regulation and energy saving device, and the left / right drag reduction, pressure regulation and energy saving device controls the inclination angle of the adjustment plate, the size of the ventilation area and the angle of the power generation fan. The elevator shaft drag reduction, pressure regulation and energy saving self-adjusting device and its adjustment method of the present invention can effectively reduce the aerodynamic resistance of the car, reduce the piston wind strength in the shaft, and increase the overall safety of the elevator.

The utility model relates to the technical field of platform household elevators, in particular to a platform household elevator of a modular structure. Comprising a bottom hoistway frame module, a middle hoistway frame module and a top hoistway frame module. The number of the bottom hoistway frame module and the number of the top hoistway frame module are each one. The number of the middle shaft frame modules is set to be larger than or equal to 0 according to the actual elevator running height, and the effects that elevator installation can be rapidly achieved, and therefore the installation efficiency and quality are improved are achieved.

The embodiment of the utility model discloses a prefabricated connecting device for an elevator. The prefabricated connecting device comprises a building body structure, a corridor, an elevator shaft structure and a soft copper cable, the building body structure and the elevator shaft structure are both connected with the corridor; a power circuit is arranged on the outer side of the building structure and used for supplying power to users; the corridor is arranged between the building body structure and the elevator shaft structure and used for connecting channels of different floors; the elevator shaft structure is located on the outer side of the building body structure, vertically extends from the first floor to the top floor and is used as a running channel of an elevator. Path intersection exists between the elevator shaft structure and the power line; the soft copper cable is used for electrical connection at the intersection of the elevator shaft structure and the power line and penetrates through the inner wall of the corridor to be communicated with the power line. According to the embodiment of the utility model, potential safety hazards can be reduced, and the elevator and power lines can be conveniently and independently repaired and maintained.

The utility model discloses a mounting and fixing device for prefabricating a cement flue, which relates to the technical field of construction engineering and comprises a fixing disc arranged on a flue hole and used for mounting the flue and a fixing component arranged on the fixing disc and used for fixing the flue. The fixing assembly comprises fixing blocks arranged on the reinforcing beam and located on the periphery of the flue, the fixing blocks can move on the reinforcing beam, and when the flue is placed on the fixing disc, the fixing blocks are fixed to the periphery of the flue so that the flue can be fixed to the fixing disc. And the flue can be fixed to the fixing disc when the flue is installed, and the quality problems that the prefabricated cement flue cracks due to improper installation, and the prefabricated cement flue slides due to the fact that the joints are not firmly fixed can be solved.

The invention relates to a compressed air storage cavern structure which comprises a drainage layer, a sprayed concrete layer, a reinforced concrete lining layer, a sliding layer and a sealing layer which are sequentially arranged in the direction from outside to inside, and a space used for storing compressed air is formed in the inner side of the sealing layer. Partition walls are arranged in the space on the inner side of the sealing layer to divide the space on the inner side of the sealing layer into a plurality of cavities, balance pipelines are embedded in the partition walls to communicate the adjacent cavities, electric control valves are arranged on the balance pipelines to control connection and disconnection of the balance pipelines, and an air pressure detection element is arranged in each cavity. The compressed air storage cavern structure is high in pressure bearing capacity and high in stability.