2207 results about "Stringer" patented technology

The invention relates to the technical field of station construction, in particular to a three-layer overlapping assembly type station assembling construction method, and an overlapping assembly type station comprises a bottom plate, prefabricated side walls, cast-in-place side walls, middle stand columns, middle longitudinal beams, middle plates, top longitudinal beams, a prefabricated top plate and a cast-in-place top plate. The construction method specifically comprises the steps that concrete is poured in situ to form the bottom plate, then the prefabricated side walls are assembled, the cast-in-place side walls are poured, then the middle stand columns and the middle longitudinal beams are assembled, connecting joint concrete is poured, the middle plate is erected, the concrete is symmetrically poured at the two ends of the middle plate for forming, and single-layer construction is completed. When the station is constructed to the top sealing of the uppermost layer, the middle plate serves as the foundation, the cast-in-place side walls, the prefabricated side walls, the middle stand columns and the top longitudinal beams are spliced and poured in sequence, the prefabricated top plate is erected, and the cast-in-place top plate is poured to complete top sealing; the method is easy to control, the accuracy of structure construction is guaranteed, the construction period is short, the construction quality is stable and reliable, and the construction efficiency can be obviously improved.

The invention discloses an assembly type subway station main body structure construction method based on a cover-excavation top-down construction method. Comprising the steps of underground diaphragm wall construction, upper covering soil excavation and pile position drilling, prefabricated pile construction, prefabricated top beam lifting and placing, prefabricated top plate lifting and placing, top beam plate-column joint post-pouring, top plate-side wall joint post-pouring, upper covering soil backfilling, negative first layer earthwork excavation, prefabricated middle beam lifting and placing, prefabricated middle plate lifting and placing, middle beam plate-column joint post-pouring and middle plate-side wall joint post-pouring. Excavating a negative second layer earthwork, pouring a bottom plate cushion layer, prefabricating a bottom beam in place and suspending, binding bottom plate steel bars, post-pouring a bottom plate, and post-pouring a bottom beam column node. A bottom plate is cast in place, a top beam, a top plate, a longitudinal beam and a floor slab are fully prefabricated, and an underground continuous wall and a prefabricated pile serve as temporary enclosure components and also serve as permanent vertical supporting components; and only a simple template needs to be erected, and after the top plate is mounted, the covering soil is backfilled to restore the road surface, so that the construction period is greatly shortened, and the influence of construction on urban traffic and environment is reduced to the minimum.

The utility model discloses a large-span multi-span greenhouse which comprises a plurality of supporting units formed by fixedly connecting a plurality of combined beam frames end to end, a plurality of upper longitudinal beams and a plurality of lower longitudinal beams are arranged among the supporting units, and the upper longitudinal beams and the lower longitudinal beams are distributed in a staggered mode. Each combined beam frame comprises two stand columns, a cross beam, a suspension cable and a plurality of main ribs, every two adjacent combined beam frames share the same stand column, the cross beam is erected between the two stand columns, the upper ends and the lower ends of the main ribs are fixedly connected with the upper longitudinal beam and the lower longitudinal beam respectively, the lower longitudinal beam is fixedly arranged on the cross beam, and the suspension cable is arranged on the main ribs. The two ends of each suspension cable are fixedly arranged on the two corresponding stand columns, and greenhouse covering materials are installed on a net frame formed among the main ribs, the upper longitudinal beams and the lower longitudinal beams. The main ribs are made of rigid materials or flexible materials. The utility model not only replaces the conventional glass greenhouse and the conventional multi-span film greenhouse which respectively use a truss structure and an arch structure, but also has the advantages of large span and material conservation.

The invention relates to the technical field of numerical control machine tools, in particular to a turning and milling combined type numerical control machine tool which comprises a material shifting frame, a pushing assembly, a traction assembly and a spraying assembly. The shifting frame is connected with the supporting sliding table; the pushing assembly is connected with the material stirring frame. The traction assembly is connected with the longitudinal beam plate; the spraying assembly is connected with the traction assembly; the spraying assembly sprays cutting fluid to the surface of a workpiece for reciprocating flushing through reverse movement of the upper face and the lower face of the conveying belt structure, and the pushing assembly is driven by the opposite-tooth transmission structure to drive the material shifting frame to reciprocate so that the cutting fluid and waste chips can be guided to the material collecting box; and the cutting fluid with the scraps filtered is guided back to the spraying assembly again to be repeatedly used. And therefore, the problem that the surface machining quality of a machined workpiece is affected by waste left on the surface of the workpiece in the turn-milling process is solved.

The present invention relates to the technical field of automobile sheet metal welding, and specifically proposes an automatic welding system for automobile rear longitudinal beams; the system is used for aligning and positioning the longitudinal beam front section and the longitudinal beam rear section in the rear longitudinal beam main beam of the automobile; the system comprises a welding fixture for welding and positioning the rear longitudinal beam main beam and a welding actuator for welding in cooperation with the welding fixture; the welding fixture comprises a fixture table, two fixture assemblies and two cleaning assemblies, and the fixture table is equipped with a lifting platform; the two fixture assemblies are respectively used for clamping and positioning the longitudinal beam front section and the longitudinal beam rear section, the two fixture assemblies and the two cleaning assemblies are respectively fixed on the fixture table surface and the lifting platform surface, and the two cleaning assemblies are arranged in a one-to-one correspondence with the two fixture assemblies; the welding system provided by the present invention improves the welding efficiency and ensures the welding quality through the improved design of the welding fixture and the matching and integrated design with the relevant cleaning structure.

The invention discloses a device and method for forming a longitudinal and transverse stiffened wallboard based on an automatic fiber placement skin, and the method comprises the steps: firstly, preparing the automatic fiber placement skin, transferring a composite T-shaped stringer which is laid on a metal core mold in a net size and is subjected to hot pressing to a wallboard skin formed based on an automatic fiber placement process, a layer of high-temperature adhesive film is laid between the composite T-shaped stringer and the automatic fiber placement skin, the composite T-shaped stringer and the automatic fiber placement skin are fixedly held through positioning holes in a core mold, and high-temperature co-adhesive curing is carried out in an autoclave; and in addition, after a secondary part T-shaped stringer which is paved and cured out of the tank is subjected to trimming of redundant materials such as silt glue and burrs, the cured secondary dry-state ribs are positioned through a positioning clamping plate, a layer of high-temperature glue film is paved between the dry-state ribs and the automatic fiber placement skin, and then the T-shaped stringer enters the tank to be subjected to high-temperature secondary glue joint curing. By means of the metal core mold and the metal positioning clamping plate, the requirement for axis degree deviation of longitudinal and transverse ribs is effectively controlled, and high-quality forming is achieved.

The present invention provides a pipeline welding positioning device, and relates to the technical field of pipeline welding auxiliary equipment. The pipeline welding positioning device provided by the present invention comprises: a support frame, a sliding sleeve and a clamping mechanism; the support frame comprises a frame and a support leg for supporting the frame, the frame comprises a relatively arranged cross beam and a relatively arranged longitudinal beam, and the two ends of the longitudinal beam are respectively fixed to the two cross beams; a sliding sleeve is slidably arranged on the longitudinal beam, and the sliding sleeve structure is connected to the clamping machine, the clamping mechanism is used to clamp the pipeline, and the position of the pipeline is changed by adjusting the position of the sliding sleeve on the longitudinal beam, thereby improving the accuracy of pipeline docking, and then improving the quality of pipeline welding.

The utility model relates to a bridge high pier steel bar binding jig frame based on a stiff framework, which comprises two longitudinal beams arranged in parallel, at least three cross beams are welded between the tops of the two longitudinal beams at equal intervals, two ends of each cross beam are respectively welded with a strip-shaped vertical plate, and a strip-shaped toothed plate is movably arranged on each vertical plate along the vertical direction. The outer sides of the toothed plates are connected with the vertical plates through bolts, a plurality of main reinforcement clamping openings are formed in the inner sides of the toothed plates at equal intervals, and a plurality of main reinforcement positioning grooves are formed in the top face of each cross beam in the transverse direction at equal intervals. The pier body reinforcement cage can be horizontally spliced and formed on the ground section by section, a stiff framework is used as a reinforcement cage lifting support, the reinforcement cage is vertically lifted to an installation position, and pier body reinforcement installation efficiency can be greatly improved.

A bed skeleton of an iron frame bed comprises a rectangular frame, a plurality of frame rods, and two or three longitudinal beams. The rectangular frame comprises two transverse rods and two longitudinal rods. A length of each of the two transverse rods is greater than a length of each of the two longitudinal rods. The two or three longitudinal beams divide the rectangular frame into three or four individual cells. The plurality of frame rods are evenly disposed in the three or four individual cells. Each of the plurality of frame rods is arranged transversely. A length of each of the plurality of frame rods is shorter than a length of each of the two or three longitudinal beams, and each end of each of the plurality of frame rods is connected to one of the two longitudinal rods or one of the two or three longitudinal beams.

The invention discloses a centering and positioning mechanism of an automobile stamping part welding fixture, and relates to the technical field of automobile production. The centering and positioning mechanism of the automobile stamping part welding clamp comprises a supporting frame, a double-station alternate conveying assembly is arranged on the supporting frame, and two symmetrically-distributed turnover devices are arranged on the double-station alternate conveying assembly. A positioning clamping assembly, a clamping adjusting assembly and a driving assembly are arranged in the turnover device. By arranging the driving assembly and the positioning and clamping assembly, the driving assembly drives the two first clamping plates to get close to each other to clamp and position the longitudinal beam while driving the two sliding frames to get close to each other, and in the process, the effect of synchronous clamping and fixing in the longitudinal beam splicing process is achieved; through cooperation of the driving assembly and the positioning and clamping assembly, it can be ensured that the longitudinal beam is kept at the accurate position in the splicing process, and deviation is reduced.

The invention belongs to the technical field of composite material mechanical tools, and discloses a stringer component clamp and a working method thereof. Wherein a holding cylinder and a position sensor are installed on the main support, a stringer member is placed on a table top of the base and comprises a web plate and a bottom plate, the web plate is connected with the bottom plate, the bottom plate is placed on the table top, a positioning block is further installed on the table top and abuts against the two ends of the stringer member in the length direction, and the main support is installed on the two sides of the stringer member. A first telescopic rod is arranged in the holding air cylinder, a first abutting end is arranged at one end of the first telescopic rod and abuts against the web, the position sensor is electrically connected with the control circuit, and the control circuit is electrically connected with the first valve body. The problem that in the prior art, when a clamp clamps a stringer component, a machining tool interferes with the stringer component is solved.

The invention discloses a PIN wire steel plate lifting mechanism and a control method, and relates to a PIN wire steel plate lifting mechanism which comprises a lifting module, a grabbing and sucking module and a fixing frame. The lifting module is in linkage with a lifting driving assembly through a ball screw, and high-precision lifting is achieved. The grabbing and sucking module comprises array type vacuum suction cups, a pressure regulating valve set and an air cylinder, the stability is enhanced through a cross-shaped transverse beam frame and a cross-shaped longitudinal beam frame, and 360-degree posture adjustment is achieved by carrying a hollow platform rotating assembly. The fixing frame is connected with the sliding base, so that the mechanism moves along the linear track, and the steel plates are conveyed. The control module integrates a visual system and a laser displacement sensor, positions the position of the steel plate and a hole site in real time, scans a three-dimensional contour, detects whether the steel plate deforms on line based on a hole site and aperture comparison method, automatically triggers a sorting alarm when a detection result exceeds a threshold value, and adopts a graded pressure relief technology in a release process to ensure soft landing of the steel plate. According to the scheme, the stability of the lifting process of the PIN wire steel plate is improved, the comprehensive efficiency of a full-process automatic production line is improved, and the reject ratio of products is reduced.

The present invention relates to a long-string flipping tool for aircraft wall panel structures and a co-curing molding method, which belong to the field of aviation manufacturing technology. The long-string flipping tool comprises: a flipping platform, provided with: a laying tool limiting device, used for limiting and constraining the long-string laying tool transfer process; a laying tool connecting device, used for connecting and positioning the long-string laying tool on the flipping platform; a laying tool positioning device, used for positioning and constraining the ends of the long-string laying tool on the flipping platform; a wall panel molding tool docking device, used for docking and positioning between the flipping platform and the wall panel molding tool after the flipping platform is flipped as a whole; a first / second bracket, provided at both ends of the flipping platform, respectively connected to the flipping platform through a bracket connecting device. The long-string flipping tool and the matching positioning device have the characteristics of simple structure and easy operation, and can meet the requirements of process stability and production efficiency in the co-curing molding process of aircraft wall panel parts.

The invention discloses a composite material T-shaped stiffened wallboard co-bonding forming method capable of eliminating edge wrinkles, and the method comprises the following steps: co-bonding of a T-shaped stringer and a stiffened skin wallboard, bag making and vacuumizing, hot pressing and curing, and demolding. Edge wrinkles of the T-shaped stringer on the stiffened skin wallboard are effectively eliminated, vacuum hot-pressing curing forming is adopted, the curing pressure in the T-shaped stringer forming process is more uniform, and the risk of wrinkles of the skin gluing face of the T-shaped stringer and the stiffened skin wallboard is reduced. According to the T-shaped stringer, uniform conduction of tank pressure is facilitated, heat transfer in the curing process is more uniform, and the internal quality of the T-shaped stringer made of the composite material is easy to guarantee, so that the thickness of the T-shaped stringer made of the composite material is not affected while the internal quality of the T-shaped stringer is not affected, the manufacturing cost of the T-shaped stringer made of the composite material is reduced, and the manufacturing process is simplified.

The invention relates to the technical field of composite material stringer forming, and particularly discloses a composite material stringer forming mold and method.The composite material stringer forming mold comprises a mold pressing machine, a jacking cavity, a clamping cavity, a positioning mechanism, a mold pressing mechanism and a jacking mechanism, and the jacking cavity is formed in the bottom end of an inner cavity of the mold pressing machine; clamping cavities communicated with an inner cavity of the molding press are formed in the left side and the right side of the molding press, the positioning mechanisms are arranged in inner cavities of the clamping cavities, the molding mechanism is arranged at the top end of the inner cavity of the molding press, and the jacking mechanism is arranged in an inner cavity of the jacking cavity. The device can effectively overcome the defects of edge fiber distortion and interlayer slippage caused by resin flow and thermal expansion coefficient difference in the prior art, can ensure that the prepreg is kept at a design angle when being laid, can timely identify and adjust an abnormal stress state during demolding, greatly reduces the rejection rate, and improves the production efficiency. The mold system can realize accurate control of the hot press molding process and safety protection of the demolding process, and has remarkable economic benefits and application values.

The invention discloses a trapezoidal sleeper system with a preassembled limiting frame and a construction method thereof.The system comprises a novel trapezoidal sleeper and the preassembled limiting frame, the preassembled limiting frame is formed by prefabricating reinforced concrete, and the novel trapezoidal sleeper cancels a traditional limiting boss and a buffer pad pasted to the outer side of an original limiting boss and the outer side of a longitudinal beam; left and right outer side blocking shoulders of the ballast bed are correspondingly canceled; the connecting steel pipes are wrapped with concrete blocks, and buffering pads are pasted on the concrete blocks and the inner sides of the adjacent longitudinal beams. The prefabricated limiting frames are located at the ends of the trapezoidal sleepers, specifically located on the inner sides of the two longitudinal beams and also located between the outer wrapped concrete cross beams of the two trapezoidal sleepers, and therefore the novel trapezoidal sleepers are limited through the prefabricated limiting frames. In the construction process, the limiting frames and the trapezoidal sleepers are pre-assembled into a whole, the limiting frames have the mold effect during cast-in-place, concrete is cast in the limiting frames at the ends of the trapezoidal sleepers, the limiting frames and the ballast bed are cast into a whole, and the limiting piers are formed.

The embodiment of the invention provides a station assembling trolley. The station assembling trolley comprises a wheel rail walking device, a frame, a side wall mounting device, a longitudinal beam mounting device and a top plate mounting device. Wherein the wheel rail walking device is arranged at the bottom of the frame and can walk along a track on a platform bottom plate; the side wall mounting device is arranged on the frame and is used for fixing side wall blocks and driving the side wall blocks to move to a side wall mounting position for splicing; the longitudinal beam mounting device is arranged on the frame and is used for fixing a longitudinal beam and moving the longitudinal beam to a target position for splicing; the top plate mounting device is arranged on the frame and used for bearing a top plate and moving the top plate to a target position to be spliced. The station assembling trolley provided by the embodiment of the invention is suitable for the scene of laying temporary steel beams above the station, the trolley is used for carrying and assembling the side wall blocks, the longitudinal beams and the top plate, and the station assembling trolley has high construction efficiency.

The invention relates to the technical field of automobile longitudinal beam die stamping, and discloses a stamping die for automobile rear longitudinal beam production, which comprises a rectangular die, a lifting mechanism is arranged at the bottom of the rectangular die, a buffer mechanism is arranged at the top of the rectangular die, an adjusting mechanism is arranged on the inner side of the top of the rectangular die, and the adjusting mechanism comprises a separating assembly and a positioning assembly. The separating assembly and the positioning assembly are arranged on the inner side of the top of the rectangular mold. When a second spring shaft moves, the second spring shaft and a top rectangular block are fixedly mounted, so that the rectangular block moves, when the rectangular block moves, an L-shaped gasket is driven to make contact with a steel plate, the steel plate is positioned and fixed, a workpiece can be positioned and clamped, errors caused by deviation in the machining process can be prevented, and the machining precision is improved. And a spring pin is fixedly installed in the first threaded sliding block, so that the workpiece is automatically bounced when machining is completed, and material taking is more convenient and faster.

The present application provides a co-bonding manufacturing method for a hyperbolic hat-stringer stiffened panel, comprising: arranging multiple magnets at intervals on a release cloth to form a flexible magnet series strip; inserting the flexible magnet series strip into a tubular vacuum bag, and then laying the tubular vacuum bag in a cavity of a hyperbolic hat-stringer; at positions corresponding to the positions of multiple magnets in the flexible magnet series strip, mounting multiple magnets on the outer surface of the top of a protruding portion of the hyperbolic hat-stringer, and enabling the magnets and corresponding magnets in the flexible magnet series strip to be respectively and mutually attracted with each other; changing the positions of the magnets to adjust the shape of the tubular vacuum bag in the cavity, such that the tubular vacuum bag uniformly conforms to the shape of the cavity of the hyperbolic hat-stringer; and after a co-bonding operation is completed, removing the magnets mounted on the outer surface of the top, and then pulling out the flexible magnet series strip from the inner cavity of the tubular vacuum bag.

The invention provides a stirrup temporary storage frame and an adjusting device, and belongs to the technical field of steel reinforcement framework machining devices.The stirrup temporary storage frame comprises a supporting bottom frame, the supporting bottom frame is provided with at least two supporting longitudinal beams which are oppositely arranged in parallel, and a connecting cross beam is arranged between any two adjacent supporting longitudinal beams; u-shaped limiting structures are evenly arranged on the tops of at least two supporting longitudinal beams at intervals in the length extending direction, the U-shaped limiting structures on each supporting longitudinal beam and the U-shaped limiting structures on the adjacent supporting longitudinal beam are oppositely arranged, and each set of opposite U-shaped limiting structures are used for containing one stirrup. A clamping structure for clamping the stirrup is arranged in the U-shaped limiting structure, so that the stirrup is stably placed in the U-shaped limiting structure; the temporary storage, adjustment and transportation efficiency of the stirrups in the machining process of the rectangular steel reinforcement framework can be remarkably improved, the machining precision is improved, the production cost is reduced, and the temporary storage, adjustment and transportation device has wide application prospects and popularization value in the field of machining of building steel reinforcement frameworks.

The invention relates to the technical field of composite material forming, in particular to T-shaped stringer pre-forming equipment which comprises a rack extending in the length direction and comprising fixed platforms arranged on the two sides and a lifting platform arranged in the middle. The side mold assemblies are arranged on the two fixed platforms, each of the two side mold assemblies comprises a side mold capable of relatively sliding in the width direction of the fixed platforms and a linear driving part, and clamping openings of the two side mold are arranged towards each other; the middle mold assembly is fixedly connected to the middle lifting platform, and the middle mold assembly comprises two middle molds with clamping openings deviating from each other and a first clamping driving piece used for driving the two middle molds to be opened or closed; according to the T-shaped stringer forming die, the two prepreg sheets are clamped through the side die assemblies and the middle die assembly at the same time, the two opposite L-shaped sheets are formed in the descending process of the middle die assembly, and then the T-shaped stringer is formed through relative close joint of the two side die assemblies, so that the forming quality and efficiency of the T-shaped stringer are improved.

The utility model discloses a material rack welding tool which comprises a base plate tool assembly (3) and a stand column tool assembly installed on the base plate tool assembly (3). The chassis tool assembly (3) comprises a base used for supporting longitudinal beams (11) and transverse beams (12), a plurality of longitudinal beam positioning and pressing mechanisms (31) and a plurality of transverse beam positioning and pressing mechanisms, the longitudinal beam positioning and pressing mechanisms (31) and the transverse beam positioning and pressing mechanisms (31) are installed on the base in the length direction of the longitudinal beams (11), and a distance exists between every two adjacent longitudinal beam positioning and pressing mechanisms (31). Each longitudinal beam positioning and pressing mechanism (31) comprises a vertical positioning piece (311) used for positioning the vertical position of the longitudinal beam (11) and a longitudinal positioning piece (317) used for positioning the longitudinal position of the longitudinal beam (11), and a plurality of cross beams (12) are respectively positioned at the positions corresponding to the cross beam positioning and pressing mechanisms. The rack welding tool can be used for manufacturing racks which are consistent in error and meet the design requirement, and the efficiency is greatly improved compared with that of lineation assembly.

A building material lifting device belongs to the technical field of building machinery and comprises a support frame body and a distribution trolley. The supporting frame body comprises two counter weight bases arranged oppositely, supporting columns fixedly arranged at the front end and the rear end of the upper surface of each counter weight base in the longitudinal direction, longitudinal beams connected between the tops of the two supporting columns on the same side, a cross beam connected between the two longitudinal beams and lifting equipment connected to the bottom of the cross beam through a linear driving mechanism. The two ends of the cross beam extend out of the outer sides of the longitudinal beams on the same side, an engaged type pushing chain system is further fixedly arranged on the inner surface of the balance weight base and comprises a box fixedly connected with the inner surface of the balance weight base, an outlet is formed in one end of the box, and a pushing chain of the engaged type pushing chain system extends forwards from the outlet in the horizontal direction. And the end parts of the two pushing chains are jointly connected with a distribution trolley. According to the invention, automatic distribution of building materials can be realized, the construction efficiency and the management level are improved, and a technical foundation is laid for automatic development of building construction.

The invention relates to the technical field of building engineering structures, in particular to an integral assembly type green building steel structure which comprises longitudinal beam mechanisms, cross beam sleeves, cross beam insertion pipes and storage pipes, the two ends of each cross beam sleeve are each connected with the end of the corresponding cross beam insertion pipe in an inserted mode, and the other end of each cross beam insertion pipe is connected with the corresponding longitudinal beam mechanism; the inner wall of the other end of the cross beam insertion pipe is connected with the end of a storage pipe, hydraulic oil is injected into the storage pipe, and the other end of the storage pipe is connected with the output end of the driving mechanism. Therefore, deformation of the cross beam sleeve and the cross beam insertion pipe is prevented, then it can be guaranteed that the longitudinal beam mechanism is free of structural deformation caused by the influence of temperature changes, the safety of the device during use is greatly improved, and the phenomenon that the structure in the device is permanently deformed due to the influence of the temperature changes can be prevented.

The invention discloses a fabricated concrete industrial factory building structure, and relates to the technical field of industrial factory buildings. The assembly type concrete industrial factory building structure comprises a plurality of layers of laminates, the laminates are connected and supported through prefabricated concrete stand columns, each layer of laminate comprises a frame built through a concrete steel structure and a pavement structure laid on the top of the frame, and the frame comprises concrete cross beams, concrete longitudinal beams and concrete secondary beams. The concrete cross beams, the concrete longitudinal beams and the prefabricated concrete stand columns are perpendicularly connected through the main nodes. Concrete and I-shaped steel are combined and poured into a firmer beam column, stable installation and connection can be achieved only by using main joints and secondary joints to be matched with bolts at the connecting positions of all the parts, then a small amount of welding is conducted, more stability is achieved, the construction efficiency is high, follow-up dismantling work can be conveniently conducted, and the top surface layer is spliced through non-rib-out laminated plates, so that the construction cost is reduced. And then the concrete pavement is paved, so that the construction is relatively simple and rapid.

The invention discloses a roof truss protecting and repairing method without falling, and relates to the technical field of constructional engineering, and the method specifically comprises the following steps: S0, surveying, detecting, evaluating, identifying, forming a report, and guiding the design work; the method comprises the steps that S1, a ridge, tiles, waterproof components, roof battens, counter battens and asphalt felts of a building are sequentially dismantled till a roof base layer of the building is dismantled; s2, a wooden roof frame of a roof base layer is repaired; s3, after repairing is completed, a keel frame is installed on the wooden roof frame; s4, a bearing net is installed, stringers are arranged and fixed, and rock wool is filled; s5, a wooden roof boarding is laid on the stringer, and anti-corrosion paint is brushed on the wooden roof boarding; s6, waterproof coiled materials are laid and pasted on the wood balusters; s7, wood counter battens are installed, and then wood roof battens are installed; s8, roof tiles and a ridge are laid; s9, a lightning rod and a lightning strip are installed, then a downpipe is arranged, and a decoration panel is installed; and S10, after repairing is completed, detection is carried out, and finally subsection acceptance check is carried out. The technical problems that stability, waterproof performance and heat preservation and heat insulation performance are not enough in the updating and reconstruction process of an existing brick-wood structure house are solved.

The guide rail machining device comprises a material frame table, a finished product material frame and a machining table which are sequentially arranged, the machining table is provided with a walking frame, the top of the walking frame comprises two longitudinal beams and a sliding cross beam, and the cross beam is provided with at least two lifting type carrying mechanisms in a sliding mode; the lifting type carrying mechanism comprises a mounting base, two first lifting mechanisms and a supporting piece at the lifting end. The supporting piece is in a C shape, and an opening of the supporting piece faces the side close to the material frame table. A containing table and a transverse sliding rail are arranged on the machining table, and the top section of the containing table is in a T shape and provided with a clamping assembly. At least one drilling device is arranged on the transverse sliding rail in a sliding mode. According to the guide rail machining device, the guide rail workpieces do not need to be manually carried, the problems of misoperation and low efficiency are solved, continuous machining of the guide rail workpieces is achieved, the working efficiency is effectively improved, and the machining precision and the service life of the guide rail workpieces are guaranteed.

The invention relates to the technical field of welding equipment, in particular to suspension bed steel framework welding equipment. Comprising a bottom plate; the control box is mounted at the top of the bottom plate; the welding manipulator is mounted at the top of the bottom plate; the first conveyors are symmetrically mounted at the top of the bottom plate; the first rubber strip is connected to the outer side of a conveying belt of the first conveyor, and discharging grooves are evenly formed in the first rubber strip at intervals; and the mounting plates are symmetrically connected to the top of the bottom plate and located on the two sides of the first conveyor correspondingly. By introducing an automatic feeding, positioning and clamping system, a cross beam and a longitudinal beam can be automatically and accurately placed in place, manual operation is not needed, the cross beam and the longitudinal beam can be rapidly clamped through the clamping blocks, and the stability of the structure in the welding process is ensured; according to the double-station alternate working mode, the welding manipulator can complete welding at one station, and meanwhile, the other station prepares a to-be-welded piece, so that continuous welding is achieved, and the production efficiency is improved.

The present disclosure relates to orthogrid stiffened structures. The present disclosure envisages a variable orthogrid stiffened shell (100). The shell (100) comprises at least one face sheet (102), a plurality of stringers (104) and a plurality of rings (106) attached to the face sheet (102). The stringers (104) are attached parallel to each other. The rings (106) are attached to the face sheet (102) across the stringers (104) to form an orthogrid array (110) on the face sheet (102). The dimensions of thickness and height of the stringers (104) vary from the dimensions of thickness and height of the rings (106).

The utility model relates to the technical field of building structures, and discloses a node of a steel reinforced concrete column and a reinforced concrete beam, which comprises a longitudinal beam, a cross beam and a section steel column body with a built-in section steel body, the longitudinal beam, the cross beam and the section steel column body are perpendicular to each other and intersect at the node, and the longitudinal beam comprises a first longitudinal bar and a second longitudinal bar which are parallel to each other. The first longitudinal bars penetrate through the profile steel body in the full length direction, and the second longitudinal bars are connected to the two sides of the profile steel body through longitudinal sleeves. The cross beam comprises a first transverse longitudinal bar and a second transverse longitudinal bar, the second transverse longitudinal bar is connected with the profile steel body through a transverse sleeve, and the first transverse longitudinal bar is horizontally bent to the outer side of the profile steel body and is arranged in a full-length mode; the joint does not need a field welding process, the arrangement requirement of large-density multi-layer longitudinal bars can be met while the bearing capacity of the section steel can be guaranteed through the structure, internal force of the joint can be effectively transmitted into the section steel column, force transmission is clear, construction is easy and convenient, and the construction progress is accelerated.