40results about How to "Reduce working at heights" patented technology

The utility model discloses a turnover tool type overhanging protective shed which comprises a main body framework, a safety protection device arranged on the main body framework and used for blocking objects falling from high altitudes, and a protective shed fixing device arranged on the main body framework and used for fixing the main body framework and a building structure. The main body framework comprises a horizontal overhanging frame used for installing the safety protection device, a reverse eave fixedly connected to the edge of the horizontal overhanging frame, and a keel frame fixedly connected with the horizontal overhanging frame in the vertical direction. At least two keel frames are arranged, and protective shed fixing devices are arranged on the keel frames. Hoisting parts matched with a tower crane for turnover are symmetrically arranged on the left and right sides of the main body framework; the protective shed can be welded and assembled on the ground, is safe and reliable, can be used in a turnover mode without being disassembled, and achieves the attractive effect by increasing the height of the overhanging reverse eave while guaranteeing safety protection and achieving measures such as advertisement posting and the like.

The utility model discloses a heavy eave hilly top roof overhanging structure formwork supporting system which comprises a plurality of main supporting steel beams located at a roof overhanging position, a formwork supporting frame and a roof overhanging structure formwork, the main supporting steel beams are distributed in parallel along the horizontal plane, one end of each main supporting steel beam is fixedly connected with a top floor, and the other end of each main supporting steel beam is fixedly connected with the formwork supporting frame. The other ends of the main supporting steel beams extend to the outer portion of the top floor and are distributed in an overhanging mode. A plurality of auxiliary supporting steel beams perpendicular to the main supporting steel beams are arranged at the positions, above the cantilever ends, of the main supporting steel beams, the formwork supporting frame is arranged above the auxiliary supporting steel beams, the roof cantilever structure formwork is fixed to the top of the formwork supporting frame, and a scaffold of a double-row outer frame structure is erected on the outer side of the formwork supporting frame. The lower portion of the scaffold is connected with the main supporting steel beam. The formwork supporting device is simple in structure, low in erecting difficulty and high in safety, and the formwork supporting problem of cantilever structures of multi-layer, high-layer and small high-layer roofs is solved.

The utility model discloses a boiler flue gas duct for fine construction, which belongs to the field of boiler flue gas ducts and comprises a flue gas duct wall, a support plate, support legs, a clamping plate, an angle steel belt, a thermal insulation layer, a reinforcing mesh and a protective layer. The specification and the size of the flue wall are determined according to data statistics, uniform blanking, prefabrication and splicing part division are carried out, finally hoisting and assembling are carried out on site, after the flue wall is assembled and spliced, the heat preservation layer is installed on the flue wall, and the heat preservation layer carries out heat preservation and heat insulation on the flue wall. The reinforcing mesh on the inner side of the heat preservation layer can increase the firmness of the heat preservation layer plate and prevent the heat preservation layer from cracking, the protection layer is fixed to the clamping plate after the heat preservation layer and the clamping plate are installed, the functions of rain prevention, wind shielding and the like are achieved for the clamping plate and the heat preservation layer, fine construction is conducted on installation of the smoke and air duct, and the smoke and air duct has enough strength, rigidity and stability. Strong vibration is avoided, the construction quality is improved, and the construction efficiency is guaranteed.

The invention discloses a modular construction method suitable for coil heat exchangers for boilers of various models. The modular construction method comprises the following steps that a packaging frame of the coil heat exchanger is designed and manufactured, modular manufacturing of the coil heat exchanger is conducted, a combined hoisting tool is installed, and modular installation of the coil heat exchanger is conducted. The modular construction method is suitable for integral manufacturing, transportation and turnover hoisting of coil heat exchangers for boilers of various models, effectively solves the problem that a large coil heat exchanger is inconvenient to turn over and hoist, assemble a suspender at high altitude, weld a header at high altitude and test pressure, optimizes the construction process, saves the cost, and effectively improves the construction safety.

The invention provides a heat preservation type building steel structure, and relates to the technical field of building steel structures. The tightening fixing mechanism is mounted on the surface of the supporting mechanism; the left and right ends of the heat-insulating material mounting mechanism are connected with the supporting mechanism and the tightening and fixing mechanism; the supporting and connecting assembly is installed on one side of the supporting mechanism. The button rotation control mechanism is installed in the supporting and connecting assembly. One end of the butt joint mechanism is connected with the button rotation control mechanism; the limiting releasing mechanism is connected with the docking mechanism; thermal insulation materials can be conveniently placed, and the thermal insulation effect is improved; multiple groups of screws can be controlled to be automatically butted and inserted, the multiple groups of screws are controlled at one time to complete fastening and fixing, the construction speed is high, and the danger is reduced; the problems that the distance between supporting rod pieces of a building steel structure is large, heat preservation materials are troublesome to install, the connecting mode depends on a large number of screws for fixing, construction complexity is increased, construction time is shortened, working efficiency is reduced, and certain danger exists are solved.

The utility model relates to a porcelain column circuit breaker opening and closing position debugging tool which comprises a tool cylinder installed on an operating mechanism, the upper end of the tool cylinder is connected with an arc extinguish chamber, a tool connecting rod is installed in the tool cylinder and extends in the vertical direction, the length of the tool connecting rod is larger than that of the tool cylinder, and the tool cylinder is connected with the tool connecting rod. The upper end of the tool connecting rod is connected with an arc extinguish chamber transmission part, the lower end of the tool connecting rod is connected with an output shaft of the operating mechanism, a gasket is installed on the output shaft of the operating mechanism, the upper end face of the gasket is connected with the tool connecting rod, and the height difference between the tool connecting rod and the tool cylinder is equal to the height difference between the supporting column and the pull rod. The upper end and the lower end of the tool cylinder are respectively provided with a connecting flange, the upper end of the tool cylinder is connected with the arc extinguish chamber through the connecting flange, the lower end of the tool cylinder is connected with the operating mechanism through the connecting flange, and the high-altitude operation problem can be solved on the premise of ensuring the opening and closing positions, and the convenience and the safety of installation are improved.

The utility model belongs to the technical field of monitoring devices, and discloses a remote monitoring device for water conservancy supervision. The device comprises a bottom plate, the top of the bottom plate is provided with a mounting cylinder, the mounting cylinder is provided with a connecting rod, the connecting rod is fixedly provided with a mounting plate, the bottom of the mounting plate is provided with a camera used for monitoring the field condition of the hydraulic engineering, and the mounting plate is further provided with a power supply assembly used for providing power for the camera. A mounting groove is formed in one side of the mounting cylinder in a penetrating mode, a driving assembly used for driving the connecting rod to move up and down along the mounting groove is arranged on the mounting cylinder, and when the camera needs to be maintained or maintained, a worker only needs to start the driving assembly to drive the connecting rod to descend in the vertical direction, so that the heights of parts such as the camera are changed; and meanwhile, the probability of high-altitude operation can be reduced, and the working safety of the working personnel is improved.

The invention provides a construction method of a roof frame structure concrete decoration member, which comprises the following steps: S1, prefabricating the concrete decoration member, arranging a bottom steel plate at the bottom of the concrete decoration member, and pre-burying a connecting steel bar in the concrete decoration member; s2, a roof steel plate is arranged at the position, where the concrete decoration component is to be installed, of the roof; s3, through welding of the bottom steel plate and the roof steel plate, the concrete decoration component is fixed to the roof; s4, reinforcing steel bars of the frame structure and an outer formwork are arranged on the roof, and the connecting reinforcing steel bars and the reinforcing steel bars of the frame structure are fixed; and S5, the outer formwork is poured, so that the frame structure is connected with the top of the concrete decoration component. By the adoption of the method, cast-in-place concrete decoration components are not needed, only a cast-in-place frame structure needs to be constructed on a building construction site, and arrangement of steel bars and formworks is simplified for the frame structure with many concrete decoration components.

The utility model belongs to the technical field of measuring equipment, and particularly relates to a telescopic support of a drop hammer line, which comprises a base, a sliding seat is slidably connected onto the base, a knob for locking the sliding seat is in threaded connection onto the sliding seat, a sleeve frame is mounted on the sliding seat, and an L-shaped frame is slidably connected onto the sleeve frame. The sleeve frame is in threaded connection with a first locking knob for locking the L-shaped frame, the sleeve frame is rotationally connected with a bobbin, one end of a hammer line is mounted on the bobbin, a plumb bob is mounted at the other end of the hammer line, a plurality of rollers for supporting the hammer line are mounted on the L-shaped frame, and a stabilizing assembly for stabilizing the plumb bob is mounted on the sleeve frame. A rotation limiting assembly used for limiting clockwise rotation of the bobbin is installed at one end of the bobbin. Through the stabilizing assembly, the shaking time of the plumb bob can be shortened, the plumb bob can be prevented from being wound due to the fact that the shaking angle of the plumb bob is too large, or the plumb bob is prevented from colliding with a worker when shaken, then the working efficiency is improved, operation is convenient, and safety is improved.

The invention relates to an inverted pushing installation method for a large converter. A lower section of a converter shell, a middle section of the converter shell and a backing ring are divided into combined modules, an upper section of the converter shell is divided into a first single module, and a tilting device is divided into a second single module; the assembled combined module is hoisted to a jacking adjusting device composed of a hydraulic portal frame and a sliding rail, the first single module is arranged on a hydraulic module vehicle, and the combined module and the first single module are assembled together through cooperation of the jacking adjusting device and the hydraulic module vehicle to form a converter body; the converter main body is downwards transported to a converter mounting position by the hydraulic module vehicle and is mounted in place; and the second single module is integrally lifted and mounted in place through the hydraulic gantry lifting device. Compared with an existing installation method, the method has the advantages of being high in installation efficiency, low in construction cost, high in installation precision, high in safety and reliability, high in automation degree, high in construction equipment universality and the like.

The invention discloses an integral dismantling method for a front guide beam in incremental launching construction through a cable-stayed buckling and hanging method. The lug plate is installed at the end of the end, connected with the guide beam, of the main beam, so that the main beam and the guide beam are in limiting fit which can only move relatively in the height direction, the other end of the guide beam is tensioned through the buckling cable of the buckling tower, and meanwhile the end, connected with the main beam, of the guide beam is jacked; under the condition that the jacking force of the jacking jack and the tensioning force of the buckle cable are applied to the two ends of the guide beam correspondingly, the guide beam is jacked upwards in the horizontal state till the elevation of the bottom of the guide beam is consistent with the elevation of the top of the main beam, the guide beam can be moved to the main beam under the action of the tensioning force of the buckle cable, and therefore the guide beam can be moved to the main beam. And then the guide beam is moved to the rear through sliding fit of the guide beam and the main beam, and overall dismantling of the whole guide beam is achieved. By means of the method, aerial work in the guide beam dismantling work can be effectively reduced so as to reduce the construction safety risk, and overall dismantling of the guide beam is achieved so as to improve the construction efficiency.

The utility model discloses a pipe group assembling unit hoisting structure, which relates to the technical field of lifting structures and comprises a hollow two-way jack, and the upper end and the lower end of the two-way jack are connected with auxiliary lifting components; a hoisting screw rod penetrates through the middle parts of the two-way jack and the auxiliary lifting assembly, and is connected with a safety auxiliary supporting nut for supporting the auxiliary lifting assembly; the top of the hoisting screw is connected with a hook. According to the hoisting structure, the two-way jack is adopted, jacking in two directions can be achieved at the same time, meanwhile, the auxiliary lifting assemblies can be installed at the upper end and the lower end of the two-way jack, the two-way jack can be supported in the jacking process of the two-way jack, the safety of the hoisting structure is improved, and the functionality of the hoisting structure is met. And moreover, the in-place precision of the pipe group assembling units is high, the synchronism is good, personnel can operate in a safe site, high-altitude operation is reduced, mechanical operation is mainly relied on, and the labor intensity and the safety risk are effectively reduced.

The utility model provides a kind of sound-absorbing crystal wood board hidden type hanging assembly, including suspension mechanism, the bottom fixed mounting of suspension mechanism is equipped with fixed disc, the both sides of fixed disc are fixedly installed with suspension frame, during the application of this technical solution, its hidden structure by setting suspension mechanism and clamping mechanism, will be arranged in the sound-absorbing crystal wood board body top with the components such as suspension plate, hexagonal sleeve, side frame, limit card group, fixed plate is fixed in the top four corners of board, clamping operation is completed in top, so that during use, connection component cannot be seen from side and below, avoid component bare damage decorative integrity, while board side edge has no any shelter structure, can be directly attached when splicing, need not reserve installation space, to reach the effect of improving decorative aesthetic degree and eliminating splicing gap, solve the problem of side edge component bare, splicing gap influence sound-absorbing performance in prior art.

The utility model relates to the technical field of steel structure modularization construction, in particular to a steel structure platform modularization construction stand column rapid positioning and butt joint structure which comprises a first node form and a second node form. The node form I is arranged at the corner part of the platform and on a middle upright post and is used for quickly positioning; the second node form is arranged on a stand column installed on the platform except the first node form and used for rapid connection, and the first node form comprises a first upper column node and a first lower column node; and the first upper column node is mounted above the first lower column node. The first upper column joint comprises a reinforcing rib plate, an insertion tip structure and a butt joint panel. The steel structure platform has the advantages that the steel structure platform and the storage tank can be constructed in parallel, and the construction period is shortened; secondly, the platform is constructed in a modularized mode, and construction efficiency and construction precision are improved; and thirdly, high-altitude operation is reduced. And fourthly, the stand column joints are simple in structure, rapid positioning is achieved, and effective butt joint is provided.

This invention provides a universal cross bracing structure and construction method suitable for inclined cable tower construction, including a cross bracing body and construction platforms at both ends of the cross bracing body. The cross bracing body includes a standard section and transition sections installed on both sides of the standard section, with non-standard sections at the outer ends of the transition sections. The non-standard sections are hinged to the hinged sections. Both the ends of the non-standard sections and the ends of the transition sections have butt joints. Limiting components are provided on the butt joints of the non-standard sections, and a limiting structure that cooperates with the limiting components is provided on the construction platform, allowing displacement of the non-standard section butt joints only in the horizontal direction, and no displacement in the vertical direction. This invention can adapt to the construction of inclined cable towers at any angle. The cross bracing can provide various length combinations to suit different tower spacing requirements. It is flexible in operation, has few limitations, and the connections between components are convenient, minimizing high-altitude work. Most components are bolted together, making installation and dismantling convenient and construction efficiency high.

The invention discloses a continuous dismantling method for a guide beam before incremental launching construction, which is characterized in that a hanging bracket fixing device and a hanging bracket structure are mounted on a cover beam to serve as a fixing foundation of jacking equipment and a counter-force support portal, so that the jacking equipment and the counter-force portal can respectively form support at the bottoms of two different guide beam sections; in the dismantling process, the first guide beam section located at the front end can be jacked through jacking equipment so that the first guide beam section can be lifted to the top of the second guide beam section located at the rear end, and then the first guide beam section is dragged so that the first guide beam section can slide to the rear portion along the second guide beam section in a sliding mode; therefore, the guide beam is demounted section by section while pushing is carried out; according to the method, high-altitude operation in the guide beam dismantling work can be effectively reduced so as to reduce the construction safety risk, and continuous segmented dismantling of the guide beam is achieved so as to improve the construction efficiency.

The invention provides a large sintering bin installation method. A to-be-constructed large sintering bin is divided into a bin cone section, a bin lower straight section, a bin ring beam section and a bin upper straight section; the material bin cone section and the material bin lower straight section are subjected to tailor welding, so that a lower combined bin body is formed; the bin ring beam section is hoisted to a mounting platform with the preset height to be fixed, and the lower combined bin body is hoisted so as to complete tailor welding of the upper end of the lower combined bin body and the bin ring beam section at the end; wherein the mounting platform is located above the center position of a 0m-layer bin body of the stock bin; and the upper straight section of the stock bin is hoisted to the position above the bin ring beam section and welded to the bin ring beam section. According to the installation method of the large sintering stock bin, the problem of transportation overrun of the large stock bin can be effectively solved in the construction process; and the problems of high hoisting height, overweight hoisting weight, limited site and the like during installation of the large stock bin single body are solved, the construction efficiency can be improved, the safety risk of operation of constructors is reduced, and the construction cost is saved.

A large-area double-curved-surface aluminum decorative plate forming method comprises the steps that a BIM three-dimensional laser scanner is adopted for conducting structure scanning on a formed double-curved-surface steel net frame (200), imaging modeling is conducted on a computer, the double-curved-surface steel net frame (200) is decomposed into units, and lofting and blanking are conducted on the computer; an aluminum panel (10), a curved steel plate (20) and a straight round steel pipe (30) are machined in a factory, the curved surface of the aluminum panel (10) is consistent with the hyperboloid where the aluminum panel (10) is located, the side edge, close to the aluminum panel (10), of the curved steel plate (20) is a curve consistent with the corresponding position of the hyperboloid, and the aluminum panel (10), the curved steel plate (20) and the straight round steel pipe (30) are assembled into a plurality of hyperboloid unit plates (100) through threads, conveyed to a decoration site and hoisted one by one. The threads are mounted on the double-curved-surface steel net rack, and the hoisting position is adjustable; the adjacent aluminum plate panels between the adjacent hyperboloid unit plates (100) are adjustably inserted; and finally, the large-area hyperboloid aluminum decorative plate is formed. According to the forming method of the large-area double-curved-surface aluminum decorative plate, the decorative aluminum plate is flat, smooth, firm and three-dimensionally adjustable in installation, the construction difficulty is reduced, and the construction quality is improved.

A method for constructing connecting shaft passages during the tunnel lining construction stage includes the following steps: A vertical shaft is formed using rotary drilling and mud slurry wall support, with a depth greater than the tunnel bottom; support steel pipes are hoisted into the shaft, and the bottom of the support steel pipes is sealed with concrete; the gap between the support steel pipes and the shaft is grouted and backfilled; a horizontal connecting passage is constructed, connecting the tunnel to the support steel pipes in the shaft; the lining structure is constructed inside the tunnel, requiring openings at the portal of the horizontal connecting passage; after the lining structure is completed, the openings, the horizontal connecting passage, and the shaft are sealed. This method enables the rapid establishment of connecting shaft passages to increase the working face during the lining construction stage of deep-buried long-distance water conveyance tunnels, and features low cost, short construction period, and high safety.

The invention discloses a hoisting device and process for hoisting a large section of a steel box girder, and relates to the technical field of bridge construction, the hoisting device comprises a hoisting mechanism, a welding mechanism is arranged on the outer side of the hoisting mechanism, and the bottom of the welding mechanism is fixedly connected with the top of the hoisting mechanism; the lifting mechanism comprises a bridge, piers are fixedly connected to the bottom of the bridge, pre-assembled sections are fixedly connected to the outer side of the bridge, stand columns are fixedly connected to the tops of the pre-assembled sections, inclined struts are fixedly connected to the outer sides of the stand columns, the tops of the multiple stand columns are fixedly connected with the same lifting platform, and the same lifting platform is fixedly connected to the tops of the multiple stand columns. The top of the lifting platform is fixedly connected with a hydraulic lifter, and the bottom of the hydraulic lifter is fixedly connected with a steel strand. According to the hoisting device and process for hoisting the large section of the steel box girder, the main bridge steel box girder is divided into a plurality of sections, and the middle large section is integrally hoisted and mounted, so that high-altitude scattered splicing is avoided, and the field welding workload is greatly reduced.

The invention provides an assembling method for a newly-added cantilever steel structure of an existing concrete beam-column joint. Comprising the steps that the surface of an existing concrete beam-column joint (1) is cleaned, and the existing concrete beam-column joint (1) is wrapped with a steel plate to form a steel-encased enclosure (2); an upper stiffening steel plate (6) and a lower stiffening steel plate (7) are arranged in the steel square tube short column (3); the cantilever steel beam (5) and the steel square tube short column (3) are connected in a bolt welding mode in a factory processing workshop to form a whole; the cantilever steel beam (5) is lifted to the installation height, and the steel square tube short column (3) and the steel-encased enclosure (2) are subjected to enclosure welding; and the high-performance grouting material (4) is poured into the steel square tube short column (3) through a preformed hole of the upper stiffening steel plate (7). The steel-encased enclosure is additionally arranged on the existing beam-column joint, so that the bearing capacity of the existing beam-column joint is enhanced under the condition that the integrity and the bearing capacity of the existing beam-column joint are not damaged at all; the method adopts assembly type connection, and has the advantages of convenience in construction, reliable connection quality and the like.

The utility model relates to the field of floating crane mounting structures, in particular to a truss type boom carrier roller auxiliary mounting tool which comprises a supporting frame, a carrier roller and a hoop. The whole structure is simple, manufacturing is easy, when the variable-amplitude steel wire rope is installed, the steel wire rope is dragged through the carrier rollers, heaving of the variable-amplitude steel wire rope can be effectively prevented, abrasion of the arm support structure is avoided, erecting of scaffolds is greatly reduced, and the project period is shortened; the supporting frame is installed on the arm frame in a hoop mode, installation is firm, disassembly is convenient, and meanwhile laying of a large number of scaffolds and aloft work can be reduced; according to boom structures of different projects, the boom can be continuously used on all subsequent crane projects after being simply modified, and the practicability is high; the scaffold channel with the width of about 500mm is laid between the carrier rollers, so that constructors can conveniently check the problems of interference, deflection and the like during rope threading.

The utility model relates to a control panel suitable for a methanol fuel cell system, which comprises a main frame, an outer frame is sleeved on the main frame, the top end of the main frame is connected with a connecting frame used for installing a control panel, the connecting frame is connected with a sealed control panel box, the control panel box is of a convex hollow structure, and the outer frame is sleeved on the main frame. An LCD screen, a power button and a communication control panel are sequentially connected into a cavity in the front end of the control panel box of a convex hollow structure from left to right, a mounting groove hole used for mounting an SD card and / or an SIM card is formed in the upper portion of the front end of the control panel box, and connecting holes connected with the main frame are formed in the two sides of the rear end of the control panel box. When the front end of the control panel box is pulled outwards, the installation groove hole protrudes out of the main frame. According to the utility model, the remote communication can be realized, the nearby operation of operators is reduced, and the purpose of improving the working efficiency is achieved.

The invention provides an ethylene unit three-machine stress-free piping construction method which comprises the following steps: dividing a connecting pipeline into a horizontal section, a vertical pipe section and an adjusting section according to a pipeline diagram, and respectively prefabricating the horizontal section, the vertical pipe section and the adjusting section; the adjusting section, the horizontal section and the vertical pipe section are assembled and spliced in sequence by means of hanging a dial indicator and assisting a rack; the welded junction of the pipeline is moved to the final welded junction position and welded through symmetrical welders, pipeline installation and connection are in a free vertical state, stress caused by pipeline installation is eliminated, and the installation precision and the construction progress of connection of equipment and the pipeline are effectively guaranteed.

The utility model relates to a prefabricated non-physicochemical plate side line structure convenient to construct and install, which belongs to the technical field of concrete prefabricated parts and comprises a building part and a prefabricated plate side line, the prefabricated plate side line is composed of a prefabricated steel structure and a concrete structure, and one side of the building part is fixedly connected with a cantilever steel beam. The prefabricated steel structure comprises a steel structure edge beam installed on the cantilever steel beam, and the top of the steel structure edge beam is fixedly connected with edge sealing angle steel. According to the prefabricated non-physicochemical plate side line structure convenient to construct and install, preparation and positioning work of all components of the prefabricated plate side are completed in a processing plant, the on-site installation period can be effectively shortened, high-altitude operation during construction of the prefabricated plate side is reduced, and potential safety hazards are reduced; prefabrication is carried out in a processing factory in advance, so that the construction difficulty is reduced, and the precision of components and embedded parts is guaranteed; in addition, the plate edge steel plates are adopted as concrete formworks, the erecting work amount of the supporting frame and the on-site installation work amount are reduced, and cost is saved.

The utility model discloses an integral lifting appliance for a roof steel structure, which belongs to the field of building construction lifting, and adopts the technical scheme that the integral lifting appliance comprises a lifting cross beam, the lifting cross beam is formed by splicing and welding four horizontal cross beams, a plurality of lifting lugs are arranged on the lifting cross beam, a plurality of lifting hooks are arranged below the lifting cross beam, and the lifting hooks are arranged on the lifting cross beam. The lifting hooks are symmetrically installed below two of the horizontal cross beams, the lifting cross beams are movably connected with the lifting hooks in a pin shaft mode, detachable anti-unhooking assemblies are arranged at the tail ends of bent hooks of the lifting hooks, and the purline lifting device has the effects of improving purline lifting efficiency and reducing high-place operation.

The present application relates to the technical field of shipbuilding, and provides an auxiliary positioning device for optimizing a shipbuilding general assembly process and a method thereof, which is especially suitable for the research and development project of optimizing the shipbuilding general assembly process of a bulk carrier, and comprises: a base device including a mounting base and a horizontal adjusting mechanism arranged on the mounting base; a three-dimensional adjusting device including an X-axis moving mechanism, a Y-axis moving mechanism and a Z-axis lifting mechanism, which are used to realize the translation and lifting of the positioning device in three-dimensional space; a positioning guide device used to realize the accurate butt joint between two segments; a laser measuring device including at least three laser ranging sensors and a laser tracker; a central control device used to receive the measurement data of the laser measuring device and control the three-dimensional adjusting device to make accurate adjustment; and a locking device arranged between the three-dimensional adjusting device and the positioning guide device. The positioning device has high positioning accuracy, high safety, strong adaptability and good dynamic stability.

The invention discloses a metal roof reverse-hanging bottom plate connecting structure and a construction method thereof.The metal roof reverse-hanging bottom plate connecting structure comprises a plurality of reverse-hanging bottom plate units, each reverse-hanging bottom plate unit comprises a plurality of unit plates and connecting battens, each unit plate is provided with two opposite adjacent sides in the width direction of the unit plate, the unit plates are arranged in the length direction of purlines of a metal roof, and the connecting battens are connected with the unit plates; the adjacent sides of every two adjacent unit plates are spliced together, the two ends of each connecting batten are in lap joint with the adjacent sides of every two adjacent unit plates respectively, and the multiple connecting battens are arranged in the length direction of an abutted seam between the adjacent sides of every two adjacent unit plates. The hanging piece is arranged below the purline and connected to the upper portions of the unit plates of the reverse hanging bottom plate unit, the two opposite sides of the hanging piece are turned upwards to form flange plates, and the two flange plates are detachably installed on the two opposite sides of the purline respectively. The problem that connection is not firm enough when a roof bottom plate of an existing metal roof system is reversely hung and installed is solved.

A modular installation method for a side wall structure of a furnace body of a large heating furnace comprises the following steps that each side wall body of a furnace wall is divided into a soaking section module, a heating section module and a preheating section module, and preprocessing is carried out; determining a mounting position in a construction site; and mounting the soaking section module, the heating section module and the preheating section module at the mounting positions. According to the modular mounting method for the side wall structure of the large heating furnace body, the furnace wall structure of the heating furnace is prefabricated into a plurality of sections offline in advance, so that the furnace wall structure module can be quickly mounted, a large amount of hoisting operation is avoided, field high-place operation is greatly reduced, the safety risk is reduced, and the space of a heating furnace production area is not occupied; the furnace wall module can be manufactured in advance before production stopping, and then the production stopping time of the heating furnace is shortened.