30results about How to "Shorten the assembly period" patented technology

The invention provides an intelligent measurement construction method for positioning arch ribs of a long railway tunnel. During arch rib positioning, the intelligent measurement construction method includes: (1) determining a coordinate conversion parameter, (2) determining a coordinate conversion formula, (3) editing a software source code and an instrument interface source code, (4) testing software and applying if the software is qualified, (5) pasting light-reflecting pieces at four corners designed for the arch rib to serve as positioning measurement points for the arch rib, (6) performing assembling measurement for the first section of the arch rib, and (7) performing intelligent positioning measurement for the next section of the arch rib till all positioning assembling of the arch ribs are finished. The intelligent measurement construction method is applied to 180 meters of continuous beam arch rib assembling in the Nanfei river bridge of the HeFu railway, safety risk during constructional measurement is reduced, arch rib positioning efficiency is improved greatly, and cost is saved.

The invention discloses an assembly technique for a head sealing cover and a kettle of a stock solution crystallizer, which comprises the following steps of: according to the technique requirement, the head sealing cover is manufactured; according to the shape of the head sealing cover and the arrangement position of an adapter or a pipeline interface on the head sealing cover, an assembling supporting plate is manufactured; the head sealing cover is inversely arranged on the assembling supporting plate; the kettle is manufactured, lifted by a lifting device and inversely arranged on the head sealing cover; the position of the kettle is regulated; the contact site between the kettle and the head sealing cover is tightly jointed by depending on the self weight of the kettle; according to the technique requirement, the welding is carried out to cause the head sealing cover and the kettle to be connected into one body. In the assembly technique, the kettle is inversely arranged on the head sealing cover, and the self weight of the kettle is used for compressing the head sealing cover so that the kettle and the head sealing cover are tightly jointed, thus effectively reducing the crack between the kettle and the head sealing cover, being beneficial for the welding operation of the next step, preventing the deformation of the head sealing during welding, having more obvious protection effect on the head sealing cover, shortening the assembling working period and reducing the manufacture cost of equipment.

The invention provides a horizontal machining center. The horizontal machining center comprises a base, a main shaft head assembly and a stand column assembly. The stand column assembly is arranged on one side of the upper portion of the base. The stand column assembly is connected with the base in a sliding manner. The end, far away from the stand column assembly, of the upper portion of the base is provided with a workbench. The arrangement direction of the workbench is the same as the sliding direction of the stand column assembly. The main shaft head assembly is arranged on one side of the stand column assembly. The main shaft head assembly faces the workbench and is perpendicular to the X direction end face of the workbench. The main shaft head assembly is connected to the stand column assembly in a sliding manner. The main shaft head assembly comprises a main shaft box and a main shaft. The main shaft box is connected with the main shaft in the Z axis direction in a sliding manner. The main shaft can move in the X direction, the Y direction and the Z direction; and the workbench and the base are integrated, rigidity is good, a rotating table is arranged on the workbench, a large and heavy part can be completely machined though one time of clamping, and precision is high.

The invention relates to the technical field of garbage waste heat boiler air pre-heater manufacturing, and discloses a snakelike tube panel lifting device. The snakelike tube panel lifting device comprises two round bearing beams, the round bearing beams are sleeved with a plurality of lifting hooks, at least two lifting lugs are welded on each round bearing beam, and the lifting hooks can hook bends at two ends of a snakelike tube panel. The snakelike tube panel lifting device is simple in structure and convenient to operate, ensures the lifting stability of the snakelike tube panel, prevents the tube panel from deforming in the process of lifting, and ensures the quality of the tube panel.

The invention discloses a helipad supporting system. The helipad supporting system comprises a plurality of sets of upper truss frames, a plurality of sets of lower truss frames, supporting frames, upper connecting frames and lower connecting frames, wherein the upper truss frames and the lower truss frames are in up-down parallel arrangement; the supporting frames are supported between the upper truss frames and the lower truss frames; one upper connecting frame is perpendicularly arranged between the two adjacent upper truss frames; one lower connecting frame is perpendicularly arranged between the two adjacent lower truss frames; one reinforcing device is arranged between each upper truss frame and each supporting frame, one reinforcing device is arranged between each lower truss frame and each supporting frame, and the upper connecting frames are fixedly connected with the upper truss frames through the reinforcing devices, and the lower connecting frames are fixedly connected with the lower truss frames through the reinforcing devices. According to the helipad supporting system disclosed by the invention, all structures are assembled through the reinforcing devices, so that the safety and the stability of the system are improved, the situation that corrosion and crackles are generated due to stress produced during welding and assembling is avoided, the helipad supporting system is rapid and efficient, and the assembling construction period is shortened.

The invention belongs to the technical field of nuclear power maintenance, and particularly relates to a nuclear turbine high-pressure outer cylinder split assembling method. In practice, the situation that the minimum sagging arc of the buckled state of an upper half cylinder body and a lower half cylinder body is not located at the two sides of a high-pressure outer cylinder of a turbine but located at a supporting position between the upper half cylinder body and the lower half cylinder body is found, so that the fastening operation space of other bolts arranged behind bolts at the supporting position in the fastening sequence is not enough by means of a method of a related technology, and the other bolts are not secured properly. According to the nuclear turbine high-pressure outer cylinder split assembling method, the bolts are sequentially fastened in a cold mode from a starting position between the upper half cylinder body and the lower half cylinder body of the high-pressure outer cylinder of the turbine to the supporting position between the upper half cylinder body and the lower half cylinder body, and sufficient operation space is effectively reserved for the fastening of the bolts at the supporting position, so that the sealing quality of assembly by the method is greatly improved, rework is avoided, and the assembly period is effectively shortened.

The invention discloses a helipad corridor support system, which comprises a plurality of apron support frames, including a plurality of corridor support trusses and corridor diagonal braces, the corridor support trusses are fixed on the apron support frames, and the corridor slant One end of the support frame is fixedly connected by a reinforcement device at the lower end of the apron support frame, and the other end of the corridor diagonal brace is fixed on the corridor support truss. The helipad corridor support system of the present invention utilizes reinforcement devices, mounting seats, diagonal braces, etc. to assemble various structures, which not only improves the safety and stability of the structure, avoids corrosion and cracks caused by welding and assembly stress, but also is fast and efficient, shortening the Assembly period. The helipad corridor support system of the present invention can be easily and quickly assembled under the premise of ensuring a safe and reliable structure, and has strong practicability and market promotion value.

The invention discloses an annealing furnace shell modular installation method. The method comprises the following steps that firstly, a steel structure platform used for supporting an annealing furnace shell is erected, and a furnace shell bottom plate positioning line and a furnace shell wallboard reference line are marked; the annealing furnace shell which comprises several sequentially-connected furnace shell bottom plate modules and furnace shell wallboard modules is manufactured in a modular mode, and installation serial numbers are marked; the furnace shell bottom plate modules are hoisted to the steel structure platform in sequence and are adjusted and positioned according to the positioning line, the furnace shell wallboard modules corresponding to the furnace shell bottom plate modules are hoisted to the steel structure platform and are adjusted and positioned according to the reference line, the furnace shell bottom plate modules and the furnace shell wallboard modules are assembled through welding until welding assembling of all the furnace shell bottom plate modules and furnace shell wallboard modules is completed. According to the method, the defects of a traditionalsingle-piece installing mode of the annealing furnace shell are overcome, the assembling period is effectively shortened, and the assembling efficiency is improved, the size precision and quality of the installation of the furnace shell are ensured, and the subsequent installation operation of equipment in the furnace shell is facilitated.

The invention relates to a short-line prefabrication assembly method for a variable section segmental beam, belonging to the technical field of bridge construction. The short-line prefabrication assembly method includes the divisional design of a template, the manufacturing of a forward prefabricated beam, the manufacturing of a reverse prefabricated beam, the assembly of segmented beams and the like. The short-line prefabrication assembly method has the beneficial effects that a prefabricated pedestal can be fully effectively utilized, a formwork system is prefabricated by only adopting a small number of segmental beams, thus the prefabrication of all the variable section segmental beams of the main bridge can be completed, modification time of the large template caused by adjustment dueto a cross slope is avoided, the beam problems such as template idleness are avoided, the prefabrication work efficiency is greatly improved, the template adjustment is simple, convenient and accurate, and the sequence synchronization of prefabrication and on-site assembly is realized, which reduces the difficulty of construction coordination and shortens the assembly period.

The invention discloses an ellipsoidal head flap single plate adjusting piece, an assembling device and a method thereof. The ellipsoidal head flap single plate adjusting piece comprises a central plate arranged at the upper end of the ellipsoidal head flap and a plurality of branches extending to the edge of the ellipsoidal head flap along the central plate, wherein each branch comprises an adjusting body with adjustable length, the curved surface shape of the ellipsoidal head flap is adjusted by utilizing the length change of the adjusting body; according to the invention, the shape and sizeof the ellipsoidal head flap can be quickly adjusted, and the process complexity and investment cost in the assembling process can be reduced.

The invention provides an anti-deformation steel component single-face assembling method. The anti-deformation steel component single-face assembling method comprises the following steps that plates are prepared; pre-splicing is conducted, specifically, two side plates are spliced at the two ends of a back plate, inclined supporting plates are spliced between the back plate and the side plates, the joints of the inclined supporting plates and the side plates are welded, and a face plate is spliced at an opening to obtain a pre-spliced frame; back connection positioning is conducted, specifically, the back plates are tightly attached to each other to splice two pre-spliced frames, positioning is conducted through a clamping piece, the joints of the face plates and the side plates are welded, the face plates protrude towards the sides away from the back plates after cooling forming, and transition frames are obtained; component forming is conducted, specifically, the two transition frames are separated, and the joints of the back plates and the side plates are welded; and a transverse piece is welded, specifically, a transverse supporting piece is assembled to one side of the face plate, the joint is welded, and the front plate returns to be flat after cooling forming. According to the anti-deformation steel component single-face assembling method, in the welding and assembling process, deformation and reverse deformation actions can be achieved, it can be guaranteed that the surface of the finally-obtained steel component is straight and reliable, and machining steps and correction cost can be effectively saved.

Provided is a suspension tube structure for a tube screen of a boiler heating surface. With a suspension tube to replace a suspension beam structure to not only play the role of a suspension beam butalso increase the area of heating surface, the suspension tube structure for the tube screen of the boiler heating surface provides improvement in two different directions, wherein one is to effectively increase the area of the heating surface and improve heat exchange rate with the overall structure and the number of tube screens not changed, and the other is to increase the heating area of the suspension tube and reduces the number of the tube screens passing through the suspension tube with the heat exchange rate of the heating surface not affected to greatly reduce the difficulty of assembly. The suspension tube structure for the tube screen of the boiler heating surface comprises multiple U-shaped tubes, two hanging tubes and multiple suspension units, wherein the multiple suspensionunits are arranged side by side, adjacent suspension units are connected through one U-shaped tube, and the two suspension units located on both ends are respectively connected with the two hanging tubes. The suspension tube structure for the tube screen of the boiler heating surface is applied to the technical field of boilers.

The invention belongs to the technical field of inclined shaft construction, and discloses a large-section inclined shaft open channel segment construction method and a high-strength combined form board thereof. The combined form board comprise an inner form board and an outer form board mounted on the outer side of the inner form board, arc binding steel reinforcing ribs are mounted between the inner form board and the outer form board, the inner form board is formed through splicing of multiple combined form board bodies, each combined form board body is composed of four supporting legs andnine combined arch plates, the outer form board comprises a steel plate strip and a 9mm plate, the steel plate strip is fixedly connected to the inner form board through the 9mm plate and a lengthening bolt, due to use of the high-strength whole form board, in the construction application, the economic benefits are extremely obvious, the conditions that a traditional splicing form board in vertical self-closed framework is slow in concrete pouring speed, the surface soil segment is slow in construction proceed, and staggered forming is poor can be solved, the form board deforming capacity is enhanced, the service life of the form board is prolonged, the construction safety and stability can be improved, and the construction efficiency and the construction proceed can be improved.