36results about How to "Reduce span" patented technology

The utility model discloses an end telescopic airing structure, an airing assembly and a clothes airing machine, and belongs to the field of clothes hangers. The end telescopic airing structure comprises two fixing rods arranged in parallel and telescopic rods arranged at the ends of the fixing rods, the two ends of the two fixing rods are connected through fixing rod bases, and the extending ends of the telescopic rods located on the same side are connected through telescopic rod bases. And a flexible sheet which can be unfolded along with the extension of the telescopic rod is arranged between the fixed rod seat and the telescopic rod seat on the same side. According to the utility model, the cross rod between the telescopic rods is driven by the flexible sheet to be linked with the extension action of the telescopic rods, a complicated linkage structure does not need to be designed in the telescopic rods, the structure is simple, and the manufacturing cost is low; after the flexible sheets are unfolded, an airing platform can be formed, the span of the unfolded flexible sheets can be reduced through the transverse rods, the supporting effect on the flexible sheets is achieved, and the airing bearing capacity of the flexible sheets can be improved; and the cross rod can be used as a mother and baby rod to clamp and hang small clothes, so that the clothes airing machine has various small clothes airing modes, and the practicability of the clothes airing machine is further improved.

The utility model provides a blade battery which comprises a battery shell and a pole roll, the pole roll is arranged in the battery shell, and the battery shell is provided with a first side and a second side which are oppositely arranged; the at least two pole column pairs are connected with the pole roll, and each pole column pair in the at least two pole column pairs comprises a positive pole column and a negative pole column which are arranged at an interval; wherein one of the at least two pole pairs is arranged on the first side, and the other one of the at least two pole pairs is arranged on the second side. By adopting the technical scheme provided by the utility model, the technical problem that the internal resistance of a blade battery in the prior art is relatively large can be solved.

The utility model discloses an aerator pipe drilling device which comprises a table plate, a plurality of supporting legs are fixed to the lower surface of the table plate, a V-shaped groove used for containing an aerator pipe is formed in one side of the upper surface of the table plate, an L-shaped first supporting plate is fixed to one end of the upper surface of the table plate, and a first electric telescopic rod is fixed to the top of the first supporting plate. A support is fixed to the telescopic end of the first electric telescopic rod. According to the device, the table plate, the V-shaped groove, the support, the drilling assembly, the material pressing assembly, the T-shaped guide rail, the polishing assembly and the scale marks are arranged, when the device is used for drilling the aerator pipe, the distance between the polishing assembly and the drilling assembly can be adjusted, the aerator pipe is moved after drilling is completed through the drilling assembly, and a drilled hole is just located below the polishing assembly; and the position of the grinding assembly can be adjusted, so that different punching distances can be adapted, and the punching device is more flexible and convenient to use.

A prefabricated outer side formwork truss structure for immersed tubes includes a truss body and a longitudinal connection assembly. The truss body includes an inner chord of the body, an outer chord of the body, a horizontal web of the body and an oblique web of the body. The inner chord of the body is welded with two reinforcing ribs. The upper and lower sides of the reinforcing ribs are respectively welded to the inner ends of two adjacent oblique webs of the body. The reinforcing ribs are welded to the inner ends of a corresponding horizontal web of the body, and the two reinforcing ribs are connected to steel tie rods. In the embodiment of the present invention, the steel tie rods are connected to the reinforcing ribs installed on the inner chord of the body. The reinforcing ribs connect two oblique webs of the body and one horizontal web of the body, shortening the force transmission path and preventing the web from being compressed and instable. The webs are connected on both sides of the reinforcing ribs as anchor points of the steel tie rods to reduce the span, reduce the local bending moment, and use a small amount of steel. The side formwork truss structure bears the steel bar system conversion load generated by the top truss and can withstand the concrete side pressure, thereby achieving the purpose of reducing the number of steel tie rods.

The present invention discloses a pier column structure using segmented prefabricated shells and a construction method thereof, including a plurality of pier column segments, which are arranged along the height direction of the pier, two adjacent pier column segments are connected by vertical wet joints, and any pier column segment includes a plurality of prefabricated shells, which are arranged along the circumference of the pier and form a cylindrical structure that passes through from top to bottom, and the plurality of prefabricated shells are connected in pairs by circumferential wet joints; core-filled concrete is filled in the interior of the cavity formed by the plurality of prefabricated shells. The present invention combines the prefabrication process with the cast-in-place process to form a new type of construction method of partial prefabrication and partial cast-in-place. Under the condition of ensuring the connection stability of the pier column segments, the prefabricated shell of a single pier column segment is prefabricated in circumferential blocks, which effectively reduces the lifting weight of the prefabricated shell, and is convenient for prefabrication, transportation and hoisting; the vertical and circumferential wet joints of the upper pier column segment and the core-filled concrete of the lower pier column segment are cast at the same time, achieving synchronous equal strength, which can effectively improve the construction efficiency of the pier.

The utility model discloses a platform reinforcing device and an ore storage tank. The platform reinforcing device comprises a foundation structure and a reinforcing structure, the bottom end of the lower supporting column is connected with the foundation structure; the top end of the upper supporting column is connected with the upper platform beam; the bottom end of the upper supporting column is connected with the top end of the lower supporting column through the supporting connecting structure, the lower platform below the upper platform beam is located between the upper supporting column and the lower supporting column, and vibration isolation gaps are formed between the lower platform and the upper supporting column and between the lower platform and the lower supporting column. Resonance caused by the fact that the natural vibration frequency of the upper platform beam of the vibrating screen platform is close to the vibration frequency of a vibrating screen can be avoided, vibration of the upper platform beam of the vibrating screen platform is reduced, the vibration can be transmitted to a base structure, structural damage of the upper platform beam caused by vibration is avoided, reinforcing of the upper platform beam is achieved, and the service life of the vibrating screen platform is prolonged. And the vibration can be prevented from being transmitted to the weighing platform, so that the stable operation of the weighing device on the weighing platform can be ensured.

The utility model relates to the technical field of motorcycle engines, and discloses a motorcycle reverse gear main and auxiliary shaft mechanism which comprises a main shaft and an auxiliary shaft, five main shaft gear teeth are arranged on the main shaft, five auxiliary shaft gear teeth are arranged on the auxiliary shaft, and the motorcycle reverse gear main and auxiliary shaft mechanism is characterized in that a main shaft reverse gear tooth is fixedly arranged on the main shaft, and an auxiliary shaft reverse gear tooth is arranged on the auxiliary shaft in an empty sleeve mode. The main shaft reverse gear teeth are meshed with the auxiliary shaft reverse gear teeth, the main shaft reverse gear teeth and the auxiliary shaft reverse gear teeth are meshed with gear teeth on a reverse gear shaft at the same time, and the reverse gear shaft is located between the main shaft and the auxiliary shaft. The structural layout is compact, and the vehicle speed is more stable and faster.

This utility model discloses a prefabricated ribbed floor slab hoisting and forming structure, belonging to the field of building formwork. The structure includes a building formwork, a support assembly, a steel truss, and a hoisting assembly. The support assembly uses a non-full-span scaffolding with a central gap; the building formwork has flanges with hoisting slots and connection holes on its sides, which can be quickly connected into an array using fasteners; the steel truss spans the gap area and is erected on the flanges of two adjacent rows of formwork; the hoisting assembly includes an upper support, double-ended bolts, washers, and nuts, passing through the merged hoisting holes from top to bottom to transfer the formwork load to the steel truss, which is ultimately supported by the scaffolding on both sides. This utility model reduces the span of the steel truss by using a "span-for-support" approach, thus lowering its selection specifications and costs; the hoisting assembly is detachable and adjustable, offering flexible use; both the formwork and hoisting are prefabricated, greatly improving construction efficiency and reducing overall costs.

The utility model provides an antenna radiation unit loading sheet mounting device, which is characterized in that the antenna radiation unit loading sheet mounting device comprises a first loading sheet, a second loading sheet, a connecting disc, a positioning structure and a mounting structure, the first loading sheet and the second loading sheet are both provided with first through holes corresponding in position, and the first loading sheet is further provided with second through holes spaced from the first through holes; the positioning structure is arranged on the bottom side of the connecting disc and is used for being fixed with the antenna radiation unit; the mounting structure comprises a first positioning column fixed to the connecting disc and a second positioning column fixed to the connecting disc, the first positioning column is provided with a limiting part and a first clamping part higher than the limiting part, and a second clamping part is arranged at the end of the second positioning column. The antenna radiation unit loading sheet mounting device is simple and reliable in structure, easy to operate, low in cost and capable of achieving small spans of different loading sheets in the height direction, and a mold is easy to achieve.

The urban forest garden residence comprises a building, each floor is provided with a core tube, the living rooms and a hanging garden, restaurants are arranged in a stacked mode in the vertical direction, the living rooms on the odd-numbered floors are horizontally communicated with the restaurants, the living rooms on the even-numbered floors are vertically communicated with the restaurants, and the living rooms on the odd-numbered floors are horizontally communicated with the restaurants. The living rooms on the odd-numbered floors and the living rooms on the even-numbered floors are vertically staggered in an L shape on the whole on the horizontal projection, each living room is provided with a plurality of outer wall surfaces, the dining room is of a natural floor height, one outer wall surface is provided with a door and window, the living room is of two natural floor heights, and the two outer wall surfaces are provided with three doors and windows. The doors and windows can achieve lighting and ventilation, the living room is good in lighting and ventilation, at least one door and window of the living room faces the south, no structural beam is arranged in the middle of the living room, the hanging garden is provided with three continuous open faces, one open face faces the south, and the living room and the hanging garden are good in sunshine.

The utility model relates to the technical field of power banks, in particular to a power bank electric quantity display structure which is arranged in a shell and comprises a charging module and a display module. The display module comprises a plurality of light-emitting assemblies, light barriers are arranged among the light-emitting assemblies, and an upper cover fixedly connected with the light barriers is arranged on the shell; the shell is provided with a light-transmitting plate matched with the multiple light-emitting assemblies. The side, away from the shell, of the light-transmitting plate is provided with a guiding part, the multiple light-emitting assemblies are arranged to be matched with the light-transmitting plate to display the electric quantity in the power bank, the light barrier is arranged to prevent mutual interference between the light-emitting assemblies, the light-emitting assemblies and the light barrier are matched to form fan-shaped structures, and the multiple fan-shaped structures are connected end to end to form an annular structure. And the electric quantity display span is small, the electric quantity display is more accurate, and at least two light sources are arranged in each light-emitting assembly, so that lamplight is more uniform.

The breathing pipeline connector is used for being detachably connected with an air conveying pipeline and comprises a connector body and an elastic component arranged on the connector body in a sleeving mode, and the connector body and the elastic component are matched to form an airflow channel for fluid circulation; the connector body comprises a pipe body and two first cantilever structures arranged along the pipe body in an aligned mode, each first cantilever structure is provided with a pressing part and a clamping part, the air conveying pipeline is provided with a matching part matched with the clamping part, the breathing pipeline connector is connected with the air conveying pipeline through clamping matching of the clamping parts and the matching parts, and the pressing parts are connected with the pipe body. The pressing part can deflect relative to the pipe body under the action of external force so as to drive the clamping part and the matching part to be unlocked. Due to the fact that the two first cantilever structures are arranged along the pipe body in the aligned mode, a double-finger pressing area conforming to ergonomics is formed, pressing on the pressing part can be achieved through natural kneading of the thumb and the index finger, and therefore the pressing part is driven by one hand to move so as to achieve unlocking of the connector and the gas conveying pipeline.

A prefabricated beam bridge reinforcement component, the beam bridge includes a beam body and a bridge pier and a cap bearing the beam body, the reinforcement component includes a concrete pier, a double limb, a double limb bottom hinge, a steel cross bar, a lower H-shaped steel, an upper H-shaped steel, a stiffening plate, a top plate and an angle adjustment pillar; two double limbs are connected by a steel cross bar to form a prefabricated component; a plurality of prefabricated components are superimposed, a lower H-shaped steel is installed on the double limbs at the top, and the double limbs at the bottom are supported on the cap through the double limb bottom hinge and the concrete piers, an upper H-shaped steel is arranged on the lower H-shaped steel, a top plate is arranged on the top of the upper H-shaped steel through a stiffening plate, the top plate is supported at the reinforcement position at the bottom of the beam body, and the upper H-shaped steel and the lower H-shaped steel are connected by an angle adjustment pillar. The present invention forms a new load-bearing structure by adding a left-right symmetrical prefabricated component and combining the supporting connection structure at the bottom of the beam, which significantly reduces the mid-span bending moment of the beam bridge and effectively prolongs the service life of the bridge.

The application discloses an openable explosion venting hatch cover structure for a hydrogen-containing cabin of a sea platform and a manufacturing and mounting method, and the explosion venting hatch cover structure is composed of a steel frame, an upper layer of profiled steel plates, a lower layer of profiled steel plates, a fireproof layer, a deck connecting structure and a ridge sealing structure. The hatch cover structure is higher than a deck plane as a whole, a hatch cover top surface adopts bidirectional pitching, a slope is not less than 5%, and a hatch cover structure steel frame bottom surface is horizontal. The hatch cover structure is formed as a whole through the steel frame, can be used as a roof lifting cover, has the advantages of overall lifting, overall dismounting and convenience for hoisting cabin equipment. The hatch cover structure is provided with the fireproof layer between the two layers of profiled steel plates, has the explosion pressure relief function and the fireproof function. The application solves the problems of rapid disintegration of the hydrogen-containing cabin hatch cover and pressure relief in the cabin, has the structural functions of being able to bear typhoon load, fireproofing, water sealing and the like, has the advantages of being openable, small damage to adjacent facilities, independent manufacturing, installation and maintenance and the like.

The utility model relates to the technical field of supporting structure systems, and particularly discloses a steel frame supporting tower which comprises a frame body and a group of gravity columns located in the frame body and hinged to the frame body. The frame body comprises a plurality of sets of vertically-arranged frame columns and a plurality of sets of vertically-arranged floor slab planes connected with the frame columns. The gravity column is vertically arranged and hinged to the floor plane. Through the arrangement of the gravity columns, the span of the primary secondary beam can be effectively reduced, the section height of the primary secondary beam is further reduced, the height difference between the primary secondary beam and the frame beam is reduced, the number of bolts for connecting joints of the primary secondary beam and the frame beam is reduced, and the construction requirements such as the distance between the bolts are easily met; the construction requirement can be met without additionally increasing the height of the steel frame beam, the work amount of the frame beam is saved, and the cost is reduced.

A large-span trapezoidal space steel tube truss concrete floor structure includes a concrete floor and a large-span trapezoidal space steel tube truss, and the concrete floor directly bearing the floor load is arranged on the T-shaped support of the three-tube upper chord of the large-span trapezoidal space steel tube truss; the basic unit of the large-span trapezoidal space steel tube truss is a bay, each bay is composed of a three-tube upper chord, a two-tube lower chord, a four-cornered pyramid diagonal web, an upper chord horizontal bar and a lower chord horizontal bar, and the cross-sectional shape of the basic unit is an inverted trapezoid arranged in a triangular shape; the large-span trapezoidal space steel tube truss adopts the intersecting connection of the steel tube direct welding node; the concrete floor adopts an assembled prefabricated plate or a steel-concrete composite floor. The present invention has a reasonable structure, simple construction, clear force transmission, and convenient installation. The floor secondary beam and the out-of-plane secondary truss of the space truss are not set, the steel consumption is small, the rigidity is large, the bearing capacity is high, the spanning capacity is strong, the comfort is good, and the mechanical properties are excellent.

The invention discloses a flow calibration device of a pump body, and aims to provide a metering pump flow calibration device in a radioactive environment, which is high in detection precision, strong in universality, high in automation degree and capable of accurately measuring the liquid level height in the radioactive environment, and a control method of the metering pump flow calibration device. According to the technical scheme, air can be evenly blown into a first air blowing pipe and a second air blowing pipe through a constant flow device, the air pressure in the air blowing pipes is larger than the static pressure of a liquid column at the lower ends of the air blowing pipes, and the constant flow device in the air blowing pipes limits the supplemented air amount in the pipes, so that the air blowing pipe pressure displayed on a differential pressure transmitter is the static pressure of the liquid column. The static pressure value is used for calculating the pressure difference through the static pressure and the liquid level height according to a pressure difference method, the accuracy of the detection result is high, the measuring structure and the radioactive substance are buried underground synchronously, harm of the radioactive substance to workers is avoided, safety is high, and the pump flow calibration device is suitable for the technical field of pump flow calibration.

This invention relates to the field of cable-stayed bridge technology and discloses a wind-resistant catwalk system for a spatial cable suspension bridge. The system module assembly includes a wind tunnel module, a static wind analysis module, and an optimization design module. The wind tunnel module analyzes the aerodynamic parameters of the catwalk through a scaled-down model wind tunnel three-force experiment, analyzing the influence of different permeability rates on these parameters, providing support for static wind stability analysis and buffeting response calculation. The static wind analysis module, based on wind tunnel test data and combined with a finite element model, calculates the critical wind speed for static wind instability of the catwalk, and analyzes the displacement and internal force distribution of the catwalk under different wind speed gradients based on the influence of geometric nonlinear effects on stability. Based on the analysis results of the static wind analysis module, this invention adjusts structural parameters, optimizes the permeability rates of the side and bottom netting, reduces the span, and adds horizontal and inclined stay cables or external cables to improve structural stiffness and reduce vibration amplitude, proposing a reliable wind-resistant system design.

The invention discloses a roadbed widening pile-slab structure and a construction method thereof. The connection problem of a pile plate structure, a newly-built widened roadbed and an existing road roadbed is particularly important. The connecting structure is used for connecting a newly-built widened roadbed and an existing roadbed and comprises a bearing plate, and longitudinal butt straps are arranged on the two sides of the bearing plate in the longitudinal bridge direction correspondingly; a transverse butt strap is arranged between the two longitudinal butt straps; a pile foundation is arranged below the bearing plate, and a stem slope is arranged between the bearing plate and the pile foundation; the bearing plate is connected with the newly-built widened roadbed and the existing roadbed through brackets; the longitudinal butt strap and the transverse butt strap are connected with the bracket of the bearing plate through studs; a concrete bridge floor cast-in-place layer is arranged above the bearing plate, the longitudinal butt strap and the transverse butt strap; the waterproof layer is located between the concrete bridge deck cast-in-place layer and the asphalt concrete bridge deck pavement layer. Stable connection between the newly-built widened roadbed and the existing roadbed is achieved, and the requirement for the safe distance of important pipelines when the roadbed is widened is met.

The BDU controller comprises a shell, a main positive loop, a main negative loop and a pre-charging loop, the main positive loop is arranged in the shell, a fuse and a main positive relay which are electrically connected in sequence are arranged on the main positive loop, the fuse is erected in the middle of the shell, and the main positive relay is arranged on one side of the fuse; the main negative loop is arranged in the shell, a diverter and a main negative relay which are electrically connected in sequence are arranged on the main negative loop, the diverter is located at the edge of the shell on the side, away from the main positive relay, of the fuse and is parallel to the fuse, and the main negative relay is located between the fuse and the diverter; the pre-charging loop is arranged in the shell, located between the fuse and the bottom wall of the shell and used for protecting the main positive loop, and through reasonable layout of the main positive loop, the main negative loop, the pre-charging loop and the quick charging loop in the shell, the internal space of the shell can be more compact, and the space utilization rate is effectively improved.

The utility model provides a single-center-distance multi-stage speed reducer, which belongs to the field of gear transmission, and comprises an input shaft, a middle shaft, an output shaft scheme, an input shaft, a first middle shaft, a second middle shaft, an output shaft scheme, an input shaft, a duplex gear, a differential mechanism, a middle shaft and an output shaft scheme, and the structures of all the schemes are located in the same shell. The axes of the input shaft and the output shaft coincide or are parallel. According to the speed reducer, a main body speed reducer transmission mechanism is formed through a center distance and a transmission combination of an input shaft, a middle shaft and an output shaft combination or an input shaft, a middle shaft, a middle shaft and an output shaft combination or an input shaft, a duplex gear, a middle shaft, an output shaft and a differential mechanism; each transmission shaft stretches across a complete supporting structure (without any cantilever support) of bearings at the two ends, the duplex gear, the output shaft and the differential mechanism are integrated into a coaxial concentric structure, a two-axle-distance multi-stage speed ratio structure is formed, the structure is compact, the space is saved, and the power density is large.

The application relates to the technical field of LED light sources, and discloses an LED light source facilitating the connection of light-emitting chips and pads, which comprises a support, the bottom of the support is provided with a center pad, the support is provided with the center pad in communication with the positive pole of a power supply and the outer peripheral pad in communication with the negative pole of the power supply, and the outer peripheral pad surrounds the outer periphery of the center pad; the support is provided with a light-emitting area, the light-emitting area is provided with a plurality of light-emitting chips; the support is provided with a center through hole, the center through hole is communicated to the center pad, the support is provided with an outer peripheral through hole, and the outer peripheral through hole is communicated to the outer peripheral pad; the light-emitting chips have positive poles and negative poles, the positive poles of the plurality of light-emitting chips are respectively connected to the center through hole and communicated to the center pad through the center through hole; and the negative poles of the plurality of light-emitting chips are respectively communicated to the outer peripheral through hole and communicated to the outer peripheral pad through the outer peripheral through hole. In this way, the structure is simple, the arrangement of the solder wires of the light-emitting chips is facilitated, the span of the solder wires is small, and the cost is saved.

The utility model provides a cylinder-in-cylinder structure heat absorption tower which is small in transfer layer span, low in construction difficulty, capable of improving the rigidity of the heat absorption tower and convenient to use, and belongs to the technical field of tower type solar photo-thermal power stations. A cylinder-in-cylinder structure heat absorption tower comprises a concrete supporting structure, a heat absorber supporting steel structure and a conversion platform. The concrete supporting structure comprises an outer supporting cylinder and an inner supporting cylinder arranged in the outer supporting cylinder, the outer supporting cylinder and the inner supporting cylinder are coaxially arranged, and a concrete supporting column arranged in the radial direction of the outer supporting cylinder is arranged between the inner wall of the outer supporting cylinder and the outer wall of the inner supporting cylinder. One end of the reinforcing connecting piece is connected with the outer supporting cylinder, and the other end is connected with the inner supporting cylinder; the heat absorber supporting steel structure is installed on the conversion platform, and the center of the heat absorber supporting steel structure is provided with an elevator vertical lifting channel with the lower end communicating with an inner cavity of the inner supporting cylinder. Displacement of the top of the heat absorption tower can be reduced.

The present invention provides a wire cutting device with adjustable cutting span, and relates to the technical field of wire cutting. A wire cutting device with adjustable cutting span comprises: a cutting machine body, a driving wheel, three supporting wheels and a cutting wire; a first connecting rod, whose two ends are respectively rotatably connected to the driving wheel and a supporting wheel, and the first connecting rod is fixedly installed with a first rotation source; a second connecting rod; a limit rod, whose two ends are respectively hinged to the midpoint of the first connecting rod and the midpoint of the second connecting rod, and the limit rod is fixedly installed with two first linear drivers, and the driving shafts of the two first linear drivers are respectively hinged to the first connecting rod and the second connecting rod; the cutting machine body is rotatably connected to two first supporting rods, and each first supporting rod is provided with a reinforcement mechanism for supporting the first connecting rod and the second connecting rod. The present invention has the function of improving the processing accuracy of parts while also being conducive to extending the service life of the cutting wire.

The present disclosure provides a display optimization method, device, electronic equipment, storage medium and program product. In the display process, a target sub-pixel in the current display area can be determined. In 3D naked eye display, light is split by a grating to form a first view (for example, a left eye view) and a second view (for example, a right eye view). The two views correspond to the target sub-pixel, which may correspond to two luminances, i.e. the first view luminance and the second view luminance. At this time, the final target luminance of the target sub-pixel can be determined according to the luminance difference between the first view luminance and the second view luminance, in combination with the position of the target sub-pixel. The target luminance formed on the basis of this reduces the span of left and right luminances, makes the R, G and B point light matching uniform, solves the sawtooth and color stripe problems of the image edge, and improves the user experience.

The invention provides a compressor pipeline device. The compressor pipeline device comprises two pipeline structures and a supporting mechanism. Wherein the two pipeline structures are detachably arranged on an inlet pipe nozzle and an outlet pipe nozzle of the compressor respectively; the supporting mechanism is arranged on the two pipeline structures and used for supporting the two pipeline structures. According to the compressor, the two pipeline structures are detachably arranged on the inlet pipe nozzle and the outlet pipe nozzle of the compressor correspondingly, so that pipeline installation at the inlet pipe nozzle and the outlet pipe nozzle of the compressor is achieved, a large door-shaped steel structure does not need to be arranged for supporting, the compressor is simple and convenient to use, the height and span of the pipeline structures are reduced, and the construction difficulty and workload are reduced; moreover, the supporting mechanism supports the two pipeline structures, a spring support hanger is not needed, and the safety and reliability of long-time operation of the pipeline structures are ensured.

The utility model relates to a base body structure based on a double-lever type electronic balance weighing sensor, the base body structure comprises a mounting platform and wall bodies arranged on two sides of the mounting platform, and the base body structure is sequentially provided with a top lower accommodating cavity and a top accommodating cavity above the mounting platform. The base is provided with a bottom containing cavity, a bottom upper containing cavity and a bottom lower containing cavity below the installation platform, and the two ends of the base body structure are each provided with an end containing cavity. According to the technical scheme, the size of the double-lever weighing sensor can be effectively reduced, especially the span in the length direction, and the internal space of the base body structure can be fully utilized.

This invention discloses a composite transfer beam structure for easy development of depot superstructures, comprising a superstructure beam, a composite transfer beam, structural columns, at least two superstructure columns, column head reinforcement, and shear reinforcement. Column head reinforcement is pre-installed on the superstructure columns. The ends of the composite transfer beam are connected to adjacent superstructure columns via the column head reinforcement. Shear reinforcement is pre-installed on the ends of the superstructure beam. The composite transfer beam is connected above the superstructure beam via the shear reinforcement and column head reinforcement. The structural columns are connected above the composite transfer beam. This invention not only meets the requirements for subsequent development structures to connect with the superstructure over a relatively long time span, but also possesses strong seismic resistance. It also offers advantages such as convenient construction, high construction quality, low construction cost, low cost of superstructure pre-installation works, and flexible arrangement of the upper columns to meet the needs of later subway superstructure development.

The application provides an inner support basement foundation pit enclosure system, which is applied to the technical field of foundation pit enclosure and comprises a retaining structure, a temporary horizontal support structure and a permanent vertical support structure for supporting the retaining structure along the periphery of the foundation pit, the retaining structure is arranged along the inner wall of the foundation pit, the permanent vertical support structure comprises a plurality of groups of permanent lateral force resisting vertical members with a high length-width ratio continuous force section in at least a lateral direction, wherein the lower end of the member is anchored below the bottom plate of the basement, the member is constructed by using a top-down method and is reserved in a peripheral area on the inner side of the basement after construction is completed, a plurality of structural columns are also constructed in the peripheral area by using a bottom-up method, the plurality of structural columns and the plurality of groups of permanent lateral force resisting vertical members are distributed in the peripheral area in a staggered manner, and the foundation pit enclosure system has the advantages of less use of temporary members, convenient use of the main structure and the like.