67results about How to "Reduce hoisting" patented technology

The invention relates to a construction method for integrally sliding a large-span steel pipe arch of a curved bridge, belonging to the field of bridge engineering construction. The method comprises the following steps: firstly, carrying out on-site splicing and welding on the manufacturing and installing sections of a steel pipe arch to form a large hoisting section; then installing a temporary arch-splicing support on a bridge-site longitudinal splicing site position, arranging arch ribs on the temporary arch-splicing support, and adopting an arch springing restraint device to preload arch springings after finishing splicing the steel pipe arch, thus enabling the steel pipe arch to form a stressed entirety; and finally, dismantling the temporary arch-splicing support, and adopting a pushing power system to realize integrally sliding the whole steel pipe arch into a proper position. The construction method of the invention has the advantages of small site occupation, integral hoisting of large sections, less hoisting subsection and less arch-splicing support amount, thus the construction cost is economical, the high-altitude welding quantity is less, the welding quality is ensured, the arch axis linetype control is easy, the steel pipe arch splicing and a concrete beam can be simultaneously constructed, arch splicing is carried out on an ectopic bridge site, the underbridge navigation is not influenced, the construction is safe and the construction progress can be quickened.

The invention provides a tunnel-before-station open-cut station construction method. A shield tunneling machine carries out tunneling in advance to pass through the station range, and the problems that a station is influenced by land requisition and demolishing and does not have construction conditions, and starting and receiving conditions cannot be provided for the shield tunneling machine are solved; and the aim that the sections can be cut through firstly, and then the station is constructed is achieved.

The invention provides a composite positioning device and method for a chassis foundation large-size component and an FE end of multiple units, and belongs to the field of assembly welding positioning auxiliary devices and application methods for chassis foundation large-size components and FE end components of multiple units. The composite positioning device comprises an FE end positioning tool, a chassis center line positioning tool and multiple boundary beam middle lateral tightening mechanisms, wherein the FE end positioning tool is used for clamping and positioning an FE end of a chassis, the chassis center line positioning tool is used for positioning a center line of the chassis in the length direction and the center of the chassis, and the boundary beam middle lateral tightening mechanisms are used for positioning the middles of boundary beams of the chassis. The FE end positioning tool of the composite positioning device can be modularly produced in batches, overhauling and maintenance are facilitated, production cost is reduced, the composite positioning device becomes a basis component of assembly line work, and a new subsequent process method of integrated machining after chassis assembly welding can become possible. The subsequent new method can effectively guarantee chassis geometric sizes and is beneficial to improving the product manufacturing precision and forming quality.

The invention discloses an assembly method of a large-scale thin-wall steel containment vessel and auxiliary hoisting pieces, and belongs to the technical field of hoisting and transportation articles. The assembly method comprises the following steps of: arranging the auxiliary hoisting pieces, particularly, uniformly providing a plurality of first lifting lugs on a construction member to be hoisted of the containment vessel, preparing the corresponding riggings, connecting one ends of the riggings with a distributor respectively and the other ends of the riggings with adjustable drawbars respectively, connecting the distributor with a crane, hoisting the distributor and the riggings above the construction member to be hoisted, regulating each adjustable drawbar to enable the adjustable drawbar to extend to a proper length, and connecting each adjustable drawbar to the first lifting lugs respectively. According to the invention, the effective hoisting capability of the crane can be improved, the load of a foundation can be lightened, and deformation of each constructional element of the containment vessel can be reduced.

The invention discloses a box assembling production line for an arm joint. The arm joint comprises an upper cover plate, a lower cover plate, a web and a partition plate. The box assembling production line comprises an annular track and an automatic guiding trolley arranged on the annular track movably. A web locating station, an inner welding station and an upper cover plate locating station are arranged on the annular track sequentially. The web locating station is used for locating the lower cover plate to be assembled and the web to be assembled, the inner welding station is used for welding the located lower cover plate and web together from the inside and welding the partition plate and the web from the inside, the upper cover plate locating station is used for assembling the upper cover plate to be assembled above the welded web and the partition plate and locating the upper cover plate to form a box structure. The invention further discloses a box assembling method, a production system and a production method for the arm joint. The box assembling production line enables box assembling operation of the arm joint to be automatic assembling line operation, is high in working efficiency and reduces labor.

The invention relates to a work-piece welding turnover device and belongs to the technical field of machining devices. The device comprises a lifting platform, fixation seats are fixed on the lifting platform, a turnover platform is arranged on the fixation seats in a rotation fit mode, a group of first pneumatic compression mechanism and a group of second pneumatic compression mechanism are fixed on the two sides of the turnover platform, and air blowing mechanisms connected with air holes in the surface of the turnover platform are arranged in the middle of the turnover platform. According to the device, the structure is simple, the design is reasonable, work-pieces to be machined are lifted through the lifting platform, and accordingly, the hoisting of work-pieces is reduced, and welding is facilitated; work-pieces to be welded are turned over through the turnover table, so that the angles of the work-pieces to be welded can be adjusted arbitrarily, and the operation is facilitated; welding ash produced during welding can be removed through the air blowing mechanisms timely, so that the welding accuracy is improved.

The invention relates to rotating type stereo garage. It includes unit loading turn table, electric machine drive mechanism, and electric machine start-stop control device. The structure of the turn table is that three moment tube great circular rings are set at one axis with the same distance; each of the great circular rings is set many moment tube circular rings; adjoining circular rings are tangential; their gap is welded rib plate; the center of a circle ring is welded center rib plate; draw bar is set on the corresponding rib plate; the axis of the turning table is set on the center rib plate. The unit vehicle position is that the three moment tube circular rings are a flat car; the flat car is set caster; the caster is connected to the circular ring. Its advantages are little earth occupying, high utilization ratio, simple structure, and low cost.

The invention discloses a hinged installation method of a hull steel structure, relating to the technical field of ship manufacturing, and solving the technical problem that some steel structures occupy more dry dock positions in the construction process, including steps: A. the hull steel structure is produced in segments; B. mapping a steel structure segmentation line on the ship main body; C. installing steel structure segment supporting tools on the ship main body; D. hoisting and fitting the steel structure segments, and positioning and moving the steel structure segments; E. hinges are arranged between the steel structure segments and the ship main body, and the installation position and the installation angle of the hinges ensure the turning route of the steel structure segments; and F, moving the main ship body to the outside of the dry dock, and hoisting andturningsteel structure segmentsforautomatic positioning and installation. According to the method, fitting and installation of the steel structure segments are completed in dock stage, and turning and fitting can be carried out by using small-tonnage hoisting equipment, automatic positioning of the steel structure segments is realized by using the hinges, therefore installation precision is improved, and dock construction period of a ship is shortened.

The invention relates to an integrated structure of a concrete tower drum and a foundation of a fan. The integrated structure comprises a reinforced concrete column body, wherein the reinforced concrete tower drum is arranged at the top of the reinforced concrete column body; first high-strength bolts distributed along the circumference are buried in the reinforced concrete column body; bottom flanges are fixed at the lower ends of the first high-strength bolts; middle flanges are fixedly connected to the upper ends of the first high-strength bolts; second high-strength bolts distributed along the circumference are buried in the reinforced concrete tower drum; the lower ends of the second high-strength bolts are fixedly connected with the middle flanges; the upper ends of the second high-strength bolts are fixedly connected with top flanges. Compared with a conventional combination of a steel fan tower drum and a fan foundation, the integrated structure disclosed by the invention has the advantages that the manufacturing cost is reduced; furthermore, a foundation ring for connecting the fan foundation with the tower drum in the conventional technology is eliminated, so that the manufacturing cost is reduced; the concrete tower drum selects on-site pouring or factory production and transportation according to conditions of a construction site and a transportation road, so that transportation is facilitated. Compared with a conventional fan, the integrated structure disclosed by the invention further has the advantages that hoisting of the tower drum is avoided, and the working period is shortened.

The invention relates to the field of ship engineering welding, in particular to a jig frame used for cylindrical pile leg barrel submerged-arc welding. The jig frame comprises base universal wheels, a base, a height-adjustable support, an operation platform, height adjustment holes, locking sleeves, a crawling ladder and a platform guardrail. The base is arranged on the base universal wheels. The base is fixedly connected with the height-adjustable support. The height-adjustable support is fixedly connected with the operation platform through the height adjustment holes and the locking sleeves. The height-adjustable support and the operation platform are welded and fixed. By means of the jig frame, hoisting of welding devices can be effectively reduced while the welding quality is ensured, and collision of the welding devices is avoided; a submerged-arc welding machine is placed on the operation platform with the guardrail, and safety of welding personnel and the welding devices is ensured.

The invention discloses a standardized D-series high-speed train chassis combined positioning device and a positioning method thereof, and belongs to the field of standardized D-series high-speed train chassis large part whole installing and welding positioning auxiliary devices and using methods thereof. The positioning device comprises an FE end positioning tooling, an end chassis positioning tooling, a chassis center line positioning tooling and a plurality of side beam middle lateral jacking mechanisms. According to the combined positioning device, the parts such as the FE end positioning tooling and the end chassis positioning tooling can realize modular mass production, are convenient to overhaul and maintain, reduce the production cost, become base parts of assembly line work, and make a following process new method possible that a chassis is installed and welded and then machined overall; and the following whole machining method can effectively guarantee the geometrical size of the chassis, the position size of a floor doorway, the diagonal size of the chassis, the whole length of the chassis and the like, and is more advantageous to improve product manufacturing precision and forming quality.

The invention provides self-propelled integral hydraulic formwork equipment for prefabricating a T-shaped beam, and belongs to the technical field of road and bridge construction. The self-propelled integral hydraulic formwork equipment comprises a formwork assembly, supporting and reinforcing assemblies, a walking system, a steel pedestal structure and a hydraulic system, wherein the formwork assembly is mounted at the outer side of the T-shaped beam and used for limiting the shape of the T-shaped beam; the supporting and reinforcing assemblies are installed at the two sides and the bottom of the formwork assembly and used for bearing loads generated during concrete pouring of the prefabricated T-shaped beam and the gravity of the formwork assembly; the walking system is arranged below the formwork assembly and used for transferring the formwork assembly; the steel pedestal structure is fixed to a ground foundation, located below the formwork assembly and used for bearing the T-shaped beam and the formwork assembly; and the hydraulic system is used for providing power for mounting the formwork assembly and demolding. The formwork equipment is easy and convenient to disassemble and assemble, labor-saving and efficiency is high, the quality of the produced precast beam is high, and the repeated utilization rate of formworks is high.

The invention discloses a high-strength and high-porosity thermal-insulation ceramsite prepared by compounding electrolytic manganese residues with coal-series wastes and a preparation method thereof. The ceramsite comprises the following raw materials in parts by mass: 100 parts of electrolytic manganese residues; 100 parts of fly ash; 5 parts of sawdust; and 1 part of Na2S. The production process is simple and environment-friendly, the used raw materials are low in cost and rich in source, and the obtained ceramsite has the advantages of high strength, high porosity, high thermal insulation performance and the like, can be widely applied to thermal insulation building walls, thermal insulation mortar, biological environment-friendly adsorption and the like, and has very wide prospects.

The invention provides a follow-up pipeline groove, and relates to the technical field of auxiliary equipment of drill rigs. The follow-up pipeline groove mainly comprises a high-position pipeline groove, a middle-position pipeline groove and a low-position pipeline groove. Guardrails are arranged on the high-position pipeline groove, one end of the high-position pipeline groove is hinged to a top layer of a drill floor, the other end of the high-position pipeline groove is hinged to the middle-position pipeline groove, the front end of the low-position pipeline groove is connected with a base of the drill floor by an adjustable telescopic draw bar, the other end of the middle-position pipeline groove is connected onto the low-position pipeline groove in a hinged manner and is close to the telescopic draw bar, rollers are arranged on the lower portion of the low-position pipeline groove, and a transfer case is arranged at the end, which is far away from the telescopic draw bar, of the low-position pipeline groove. The follow-up pipeline groove has the advantages that when the follow-up pipeline groove is mounted at a low position, the high-position pipeline groove is hinged to the top layer of the drill floor by the aid of an operation cylinder without being hoisted by a crane, and the length of the telescopic draw bar can be adjusted, so that a folding angle of the follow-up pipeline groove can be controlled, and the follow-up pipeline groove is applicable to different types of drill rigs provided with drill floors with different heights; the transfer case is mounted on the low-position pipeline groove, is convenient to operate and is safe and reliable, and the transfer case and the follow-up pipeline groove can form an integral transport unit.

A multifunctional cable winding drum device comprises a winding drum support and an outer frame support. The winding drum support is arranged in the outer frame support. The winding drum support comprises a cable fixing ring and winding drum blocking rings arranged at the two ends of the cable fixing ring respectively. The winding drum blocking rings are connected with the cable fixing ring through spokes. The outer frame support comprises a connection shaft penetrating the cable fixing ring and outer rings connected with the connection shaft in a sleeving manner. The connecting shaft is sleeved with an inner shaft hub and an outer shaft hub. The inner shaft hub and the outer shaft hub are arranged in a spaced manner. The inner shaft hub is connected with the winding drum blocking rings through a circular steel plate. The outer shaft hub is connected with the outer rings through outer spokes. The outer rings are connected through transverse supports. At least one end of each transverse support penetrates one outer ring and is fixed through a nut. The multifunctional cable winding drum device has the beneficial effects that an outer frame support of an existing winding drum is improved, so that the winding drum can be used as a laying device as well as a protective device for a wooden frame after being detached.

The invention discloses a device and industrial method for continuously producing aerogel felts, and relates to the technical field of aerogel production equipment. The device for continuously producing the aerogel felts comprises a first lifting platform, a double-station unwinding device, a fiber felt feeding device, a metal detection device, an impregnation device, a microwave curing device, ahydrophobic modification device, a hole structure protection device, a solvent cleaning device, a drying device, a winding device and a packaging device which are sequentially arranged from front to back. According to the device and industrial method for continuously producing the aerogel felts, the requirements of the equipment safety aspect, the solvent effective utilization aspect and the environmental protection aspect are simultaneously considered, and the continuous production of unwinding, forming, modification, winding and packaging is realized; and by means of the device, the raw materials can be directly produced into the aerogel felt products, and the packaging process can be completed.

The invention provides a villa lift bearing device. The villa lift bearing device comprises a tractor bottom plate, two main guide rails and two subsidiary guide rails, wherein two opposite sides of the tractor bottom plate are both bent upwards to form lug plates; fixing holes are formed in the lug plates near the front side of the tractor bottom plate; the main guide rails are fixedly connected onto the lug plates through the fixing holes; the two subsidiary guide rails are fixedly arranged on the rear side of the lower end of the tractor bottom plate; a cross beam for fixing a tractor is arranged on the upper end surface of the tractor bottom plate; and a rope end support is arranged on the front side of the lower end surface of the tractor bottom plate. According to the villa lift bearing device, as the tractor bottom plate is very small, the lifting is convenient. The problems in the prior art that the tractor assembly work load is large; the civil engineering construction is difficult; the adjusting is difficult; and the like are solved. The labor intensity of assembly personnel is greatly lowered, and the assembly cost is reduced.

The invention belongs to the technical field of motors and particularly relates to a large offshore perpendicular-axis wind power generator unit. The wind power generator unit adopts a unique V-shaped structure and comprises blades, a power generator, a helicopter platform, a dynamic and static shaft, a top bearing, a bottom bearing, an off-shore foundation and auxiliary devices. The blades are composed of outer-layer blades and inner-layer blades, a variable pitch system is adopted in the outer-layer blades to avoid galloping dangers caused by overhigh rotation speed due to strong wind or typhoon, and cross sections of the inner-layer supporting blades are of wing-shaped structures to improve the utilization rate of wind energy of the wind power generator unit. The power generator, a gearbox, a converter and other auxiliary devices are arranged at the bottom of the wind power generator unit, so that part replacement and maintenance cost of the wind power generator unit in the hanging process and the later period can be reduced. Compared with a horizontal-axis wind power generator unit, the large offshore perpendicular-axis wind power generator unit effectively solves the problem of the upper limit of power per unit of the horizontal-axis wind power generator unit, is more suitable for the designing scheme of large 10MW or higher than 10MW offshore perpendicular-axis wind power generator units, and has high market utilizing value.