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35results about How to "Improve space rigidity" patented technology

Petroleum wellhead annular space sealing device

The invention discloses a petroleum wellhead annular space sealing device. The petroleum wellhead annular sealing device is used for sealing an annular space between a wellhead sealing body and a petroleum pipe, at least one annular groove is formed in the inner wall surface of the sealing body, and the sealing body is provided with an injection hole which is communicated to a centrifugal end of the annular groove; the petroleum wellhead annular space sealing device further comprises a sealing ring, a power ring, and an injection component, wherein the sealing ring is embedded into the annular groove, the sealing ring is used for sealing the groove in the radial direction by being jointed to the wall surface of the annular groove, and is used for sealing the annular space by being jointed to the outer wall of the petroleum pipe, the power ring is installed in the annular groove and is located between the groove bottom of the annular groove and the sealing ring, and the injection component is installed in an inlet of the injection hole, and is used for injecting fluid with given pressure so as to make the power ring push the sealing ring to tightly press the petroleum pipe. In the petroleum wellhead annular space sealing device, the requirement for deformation capability of a sealing part is low, and meanwhile the sealing capability can be effectively improved.
Owner:DEZHOU UNITED GASOLINEEUM MACHINERY

Especial-big span suspension bridge of uniparted hyperboloid space rope net main cable and construction method thereof

InactiveCN103088750AHigh lateral stiffnessLarge anti-lateral static wind load capacitySuspension bridgeBridge erection/assemblyHyperboloidSpatial structure
The invention provides an especial-big span suspension bridge of a uniparted hyperboloid space rope net main cable and a construction method thereof. A straight line character of the uniparted hyperboloid is used to change a vertical parallel cable rope system of an original suspension bridge. A thick and heavy centralized cable rope is changed into a dispersive space steel wire cable rope. Multiple strand of steel wire cable ropes are arranged in a cross mode. Space rope net main cable-cross nodes are fixed to form a space cable rope system of the uniparted hyperboloid type. An oval steel strengthening ring beam is arranged. A suspender and a stiffening beam are installed. A gate-type rigidity middle buckle is arranged. The especial-big span suspension bridge of the uniparted hyperboloid space rope net main cable system is built. The especial-big span suspension bridge of the uniparted hyperboloid space rope net main cable system has the advantages of being strong in span capacity, large in space structure rigidity, high in screw frequency ratio, good in wind resistance stability and the like. The novel space main cable system suspension bridge is capable of radically saving the problem of the wind resistance stability of the big span suspension bridge and used for projects of a striding sea connected island. The especial-big span channel suspension bridge of 3000-5000 meters is built.
Owner:SOUTHEAST UNIV

Sound barrier structure for high speed railways

The invention relates to a sound barrier structure for high speed railways. The sound barrier structure comprises a steel upright post and a plurality of sound barrier absorption / sound insulation unit plates which are transversely inserted in the steel upright post; elastic rubber is filled in a gap between a flange plate of the steel upright post and the sound barrier absorption / sound insulation unit plate; the sound barrier absorption / sound insulation unit plate comprises a front side plate, a rear side plate, locking buckles, a central framework and a sound absorption material, wherein the front side plate and the rear side plate are locked to a first locking plate and a second locking plate and the upper side and lower side of the central framework through the locking buckles; and the sound absorption material is filled in the gaps inside the locked front and rear side plates. Based on the conventional sound barriers, the sound barrier structure has good economic performance and durability by improving and expanding the types of the conventional sound barriers, and particularly the mechanical strength is greatly improved; and because the technology of bolt-free connection is adopted, the rigidity, shock resistance, fatigue resistance and safety performance of the sound barrier structure are greatly improved.
Owner:ATEC ENERGY&ENVIRONMENT CO LTD

Riverway desilting mechanism based on cable driven parallel structure

The invention provides a riverway desilting mechanism based on a cable driven parallel structure. The mechanism comprises multiple cable driven units distributed on the two sides of a riverway, supporting systems arranged beside the cable driven units, steel cables and a grab bucket, wherein one end of each steel cable is connected with the corresponding cable driven unit through the corresponding supporting system, and the other end of each steel cable is connected with the grab bucket. One end of each steel cable is connected with the corresponding cable driven unit, the other end of each steel cable is connected with the grab bucket through the corresponding supporting system and a guide structure, and the space cable driven parallel structure is formed. By means of cooperative control of the cable driven units, sequential stretching and retracting of the steel cables are guaranteed, the position and the posture of the grab bucket are controlled, grasping and lifting of sludge at the bottom of a river are finished, and finally the riverway desilting function is achieved.
Owner:TSINGHUA UNIV +1

Tube-in-tube bridge tower of space hybrid cable net suspension bridge with parabolic arched tower cap

The invention provides a tube-in-tube bridge tower of a space hybrid cable net suspension bridge with a parabolic arched tower cap. The tube-in-tube bridge tower of the space hybrid cable net suspension bridge with the parabolic arched tower cap is characterized in that the parabolic arched tower cap with a rigid tie rod is arranged at the top of a tube-in-tube herringbone tower column; one end ofa giant diagonal bracing is anchored to the waist of the tube-in-tube herringbone tower column; the giant diagonal bracing supports the arch foot of the parabolic arched tower cap and forms a racket-like bridge tower structure; a load-bearing steel cable is placed on the tube-in-tube herringbone tower column, and a carbon fiber space cable net is anchored on the parabolic arched tower cap to enhance the spatial stiffness of the suspension bridge and realize the cooperation between two groups of cables; a concrete-filled rectangular steel tube corner column and a grille tubular double-steel concrete composite shear wall are adopted to form a tube structure; the tube-in-tube herringbone tower column comprises an outer tube structure, a core tube structure and multiple rigid diaphragms. Thetube-in-tube bridge tower of the space hybrid cable net suspension bridge with the parabolic arched tower cap has various advantages, such as strong structural rigidity, good wind resistance stability, rich facade modeling, strong earthquake resistance, and capability of being adopted as a bridge tower structure of a space cable net suspension bridge with a super-long span of 4000 meters.
Owner:江苏交通工程咨询监理有限公司

Butterfly-type cable-stayed bridge system

The invention discloses a butterfly-type cable-stayed bridge system. The system comprises bridge towers, main girders, abutment piers, stayed cables and asymmetric curved arches. The asymmetric curved arches are arranged in a main span, and in the area, the two ends of each stayed cable are connected with the corresponding bridge tower and the corresponding asymmetric curved arch respectively. Inclined suspenders located on the same straight lines of the stayed cables are arranged at anchorage points on arch ribs, and the inclined suspenders are connected with the main girders. Meanwhile, the tension of the inclined suspenders is larger than the cable force of the stayed cables, so that the arch ribs are compressed, and at the moment, loads are born by the stayed cables and an arch-girder system together. The asymmetric curved arches have the stiffening effects on the stayed cables in the areas of the asymmetric curved arches, the main girders, the asymmetric curved arches and the inclined suspenders in the arches form a spatial framework structure together, and the space stiffness of the cable-stayed bridge main span is improved so as to be beneficial to the effect of resisting the wind loads; meanwhile, the downward deflection deformation of the main girders is reduced, the deformation of the stayed cables is reduced, so that the cable force of the main span is reduced, and the stress state of the bridge towers is improved.
Owner:TONGJI UNIV

Large-span multifunctional roboticized engineering construction equipment

The invention discloses large-span multifunctional roboticized engineering construction equipment and belongs to the technical field of civil engineering construction mechanical equipment. The large-span multifunctional roboticized engineering construction equipment comprises a plurality of supporting stand columns, steel wire rope driving units, steel wire rope guide devices, steel wire ropes, a controller and an end effector. The steel wire rope driving units, the steel wire rope guide devices and the steel wire ropes are matched with the supporting stand columns. The multiple supporting stand columns are arranged around the construction area, and a hydraulic cylinder is arranged in each supporting stand column to achieve ascending and descending of the supporting stand column in the vertical direction. Each steel wire rope driving unit is fixed to one side of the corresponding supporting stand column. The steel wire rope guide devices are arranged at the top ends of the supporting stand columns. One end of each steel wire rope is connected with the corresponding steel wire rope driving unit, and the other end of each steel wire rope penetrates the corresponding supporting stand column to be connected with the end effector after reaching the corresponding steel wire rope guide device. Remote control over the end effector is achieved through the controller, the large-span multifunctional roboticized engineering construction equipment can do wide-range large-span three-freedom-degree motion, the corresponding end effector is used in cooperation, and the work of punching and piling, wall breakage, pavement reconstruction and material carrying is completed.
Owner:TSINGHUA UNIV

Spatial combined arched shell structure with two layers of cylindrical surfaces

The invention discloses a spatial combined arched shell structure with two layers of cylindrical surfaces, and aims to provide a combined arched shell structure which has high bearing capacity and is convenient to construct. The spatial combined arched shell structure consists of an upper-string cylindrical curved surface, a lower-string cylindrical curved surface and a spatial network shell connected with the upper-string cylindrical curved surface and the lower-string cylindrical curved surface, wherein the upper-string cylindrical curved surface is formed by connecting a bidirectional steel ribbed plate and concrete combined plate modules; the lower-string cylindrical curved surface is formed by connecting lower-string steel tube structural members; the spatial network shell connected with the upper-string cylindrical curved surface and the lower-string cylindrical curved surface is a four-face cone supporting system formed by connecting web rods; each bidirectional steel ribbed plate and concrete combined plate module consists of ribbed steel plates and concrete; and the ribbed steel plates are connected with the concrete through shearing connection pieces. The arched shell structure is integrated with the advantages of a steel and concrete combined structure and a spatial network shell structure, so that the arched shell structure has high bearing capacity and is easy and convenient to construct.
Owner:中国人民解放军海军勤务学院

Template supporting device for concrete supporting construction of shaft and lane engineering

The invention discloses a template supporting device for concrete supporting construction of shaft and lane engineering and relates to a template supporting device for cast-in-place concrete of shaft and lane engineering. The template supporting device comprises wall templates and a vault template and is characterized in that the template supporting device comprises steel joists and fixing anchor rods, wherein each steel joint comprises a cross arm, stand columns and a vault beam; each fixing anchor rod comprises a rod body, a cover plate and a nut; the steel joints are mounted at intervals in the length direction of the poured concrete roadway, and the rod bodies penetrate through the steel joists and are fixed in surrounding rock; the wall templates and the vault template are laid on two steel joists, concrete is poured between the surrounding rock and the templates, and the wall templates and the vault template are laid sequentially with increasing of height of the poured concrete; the steel joists are dismounted after concrete setting, the concrete surface is covered with the cover plate, and composite supporting is formed. The template supporting device has the advantages that the template supporting device is novel in concept, stable and firm in structure, simple to manufacture, convenient to mount and capable of being repeatedly used and wood materials are saved; the roadway is unimpeded, the construction is convenient, and the production efficiency is improved; the strength of the steel joists is high and integrally connected with the surrounding rock to form a stereoscopic structure, and the strength of the supporting device is greatly improved.
Owner:MAGANG (GROUP) HOLDING CO LTD

Uniparted hyperboloid anniversary flower basket frame

The invention provides a uniparted hyperboloid anniversary flower basket frame. By using the diagonal grain characteristic of a uniparted hyperboloid, a space-crossing diagonal bar mesh cylinder is built, crossing joints of spatial bar members are fixed, and multiple reinforcing ring beams are arranged, so that the uniparted hyperboloid anniversary flower basket frame is formed. Multiple partition plates are arranged to divide the inner space of the uniparted hyperboloid anniversary flower basket frame, and an elliptic concrete weight partition plate is arranged on the bottom of the uniparted hyperboloid anniversary flower basket frame so as to increase the anti-overturning stability; a wooden partition plate is arranged on the upper portion of the flower basket frame and used for placing an upper-layer flower pot; lower-layer flowers are arranged around a cylinder body of the flower basket frame, a plastic partition plate is arranged in the middle of the flower basket frame and used for placing a goldfish bowl, and the spatial region between the middle goldfish bowl partition plate and the bottom concrete partition plate can be also used as a birdcage, so that birds' twitter and fragrance of flowers are achieved, and the flower basket frame is rich and colorful. The novel anniversary flower basket frame has the advantages of being stable and firm in structure, attractive in thin-waist shape, diversified in function, convenient to manufacture, low in price and the like.
Owner:徐文平

Construction method of spatial grid structure engineering

The invention discloses a construction method of spatial grid structure engineering, and particularly relates to the field of building construction. The construction method comprises the steps that 1, the positioning axis of a grid support, the specification and positions of support anchor bolts, and the position, elevation and levelness of a top plate on a supporting face are checked, unqualified workpieces are removed, and the parts with unmatched flatness and elevation are cushioned to be flat through steel plates; and 2, materials which are qualified after checking are welded, the welded workpiece structures are subjected to a tension test, unqualified workpieces in the tension test are removed, and the workpieces are identified and classified according to the different functions of the workpieces. The construction method of spatial grid structure engineering is regular, the shapes and the sizes of a large numbers of joints and rod pieces are the same, the methods utilized during mounting are the same, production is convenient, the product quality is high, on-site assembling is easy, the construction speed can be increased, the occupied space of a structure is small, the space can be utilized more effectively, and by adopting the mounting method, the space stability of the overall grid system can be greatly improved.
Owner:贵州百胜数源工程技术管理有限公司

Seagull-type space dorsal cable-stayed bridge system

The invention relates to a seagull-type space dorsal cable-stayed bridge system. The cable-stayed bridge comprises bridge towers, stay cables, main beams, side piers, middle piers, back cables and inhaul cables, and relates to the technical field of bridge engineering, wherein the bridge tower is designed to be arc-shaped; two ends of the back cable are respectively anchored at the top of the bridge tower; one end of the inhaul cable is connected with the back cable; the other end is anchored at the root of the bridge tower; the bridge towers, the back cables and the inhaul cables form a three-dimensional frame structure; the space rigidity of the cable-stayed bridge can be improved; the effect of resisting dead load and live load is facilitated; the back cable can be tensioned at the tower top for cable force adjustment; the inhaul cable can be tensioned at the root of the bridge tower for cable force adjustment; therefore, the stress state of the bridge tower under the action of deadweight and tension of the stay cable is improved; therefore, the line shape of the bridge tower is close to the reasonable arch axis, the bending moment borne by the root of the bridge tower is reduced, that is, the size of the cross section of the tower bottom does not need to be designed to be very large, and therefore the spanning capacity of the cable-stayed bridge can be enhanced, material loss and cost can be reduced, and the aesthetic feeling of the bridge can be enhanced.
Owner:CHINA MAJOR BRIDGE ENERGINEERING

Suspension Bridge and Construction Method of Saddle Parabolic Space Hybrid Cable System

The invention provides a suspension bridge with a packsaddle paraboloid space mixing cable system. The suspension bridge comprises bridge towers, parallel wire ropes, packsaddle paraboloid cable nets and space stay cable nets, wherein each bridge tower comprises a portal type frame column, a parabola-shaped tower cap and tower cap supporting oblique cylinders; the parallel wire ropes are hung between the bridge towers; the end parts of the parallel wire ropes are fixed through an anchorage; each packsaddle paraboloid cable net is a space cable net formed by the sinking of a packsaddle paraboloid space net, and is coated on the parallel wire ropes; a plurality of steel structure curved beams are also arranged on the packsaddle paraboloid cable nets I, and the parallel wire ropes, the packsaddle paraboloid cable networks and the steel structure curved beams are fixed through a corresponding fixture; the space stay cable nets are respectively arranged on two sides of the parallel wire ropes; and the upper end of each space stay cable net is anchored in the corresponding tower cap supporting oblique cylinders, and the lower end of each space stay cable net is connected with the corresponding reinforced steel girder. The suspension bridge disclosed by the invention has the advantages of being high in spanning capacity, high in structural space rigidity, good in wind resisting stability, convenient to construct and the like, so that the problem of the wind resisting stability of an extra-large span suspension bridge is fundamentally solved.
Owner:SOUTHEAST UNIV

Circular ring suspender and welded hollow spherical joint stiffening beam glass suspension bridge

The invention belongs to the technical field of bridges, and discloses a circular ring suspender and welded hollow spherical joint stiffening glass suspension bridge. The circular ring suspender and welded hollow spherical joint stiffening glass suspension bridge adopts a pattern of audio frequency as a design characteristic; the concept of a spatio-temporal tunnel is introduced to architecture and landscape, a circular ring with variable diameter is adopted to set off a pedestrian passageway, and visitors just like walk in the suspended spatio-temporal tunnel; or the call and the sound wave in an open country reverberate among distant mountains. According to the circular ring suspender and welded hollow spherical joint stiffening glass suspension bridge, due to the diversity of the changeof the adopted plane and space, the visitors feel different space changes in the traveling process, the visual fatigue for spanning an ultra-long bridge body is reduced, and therefore the interestingness of the glass gallery bridge is increased, and in addition, the visitors are personally on the scene in the high altitude where transparent glass is erected, so that the visitors can better fell the charm of the nature and the excitement brought by being high up in the air.
Owner:CHONGQING JIAOTONG UNIVERSITY

Extra-large-span suspension bridge with single-leaf hyperboloid space cable network main cable and its construction method

The invention provides an especial-big span suspension bridge of a uniparted hyperboloid space rope net main cable and a construction method thereof. A straight line character of the uniparted hyperboloid is used to change a vertical parallel cable rope system of an original suspension bridge. A thick and heavy centralized cable rope is changed into a dispersive space steel wire cable rope. Multiple strand of steel wire cable ropes are arranged in a cross mode. Space rope net main cable-cross nodes are fixed to form a space cable rope system of the uniparted hyperboloid type. An oval steel strengthening ring beam is arranged. A suspender and a stiffening beam are installed. A gate-type rigidity middle buckle is arranged. The especial-big span suspension bridge of the uniparted hyperboloid space rope net main cable system is built. The especial-big span suspension bridge of the uniparted hyperboloid space rope net main cable system has the advantages of being strong in span capacity, large in space structure rigidity, high in screw frequency ratio, good in wind resistance stability and the like. The novel space main cable system suspension bridge is capable of radically saving the problem of the wind resistance stability of the big span suspension bridge and used for projects of a striding sea connected island. The especial-big span channel suspension bridge of 3000-5000 meters is built.
Owner:SOUTHEAST UNIV

A solar tracking device for photovoltaic power generation

ActiveCN106301185BIncrease power generationIncrease the intensity of light irradiationPhotovoltaic supportsSolar heating energyHorizontal axisLandform
A solar tracking apparatus for use in photovoltaic power generation. Using a pile column (16) and sleeve (8) combined structure, the present invention, by means of a winch (17), drives steel ropes (19) to pull multiple unpowered passive tracking brackets (1) to rotate and track solar azimuth angle variation; an inclination adjustment mechanism can also be arranged, allowing a photovoltaic assembly panel (2) to rotate about a horizontal axis and track solar altitude angle variation; a mirror surface reflecting plate (28) is arranged on the lower edge of the surface of the photovoltaic assembly panel (2) to enhance the light collection capability of the surface of the photovoltaic assembly panel (2); due to the bending properties of the steel rope (19), the planar arrangement and vertical arrangement of the tracking brackets (1) have great flexibility, and are particularly suitable for landforms of irregular planes and land conditions on uneven sites; stable operation of the transmission system is maintained by using a gravity tension balancing device (18) to absorb and compensate the various deformations of the steel rope (19); the present solar tracking apparatus for use in photovoltaic power generation has a high performance-to-price ratio and a strong adaptability to complex engineering conditions, and is suited to large scale design of the brackets.
Owner:丁慈鑫 +3

Large-span horizontal pulling type cylindrical net-shaped pedestrian landscape suspension bridge and construction method thereof

The invention relates to a large-span horizontal pulling type cylindrical net-shaped pedestrian landscape suspension bridge and a construction method thereof. A horizontal pulling type pedestrian suspension bridge in a canyon scenic area is reformed by referring to a Tibet rattan net bridge, heavy concentrated cables are changed into dispersed single-blade double-curved-surface barrel net-shaped space cables, a small number of oval rigid stiffening rings are arranged in a barrel net, double-spiral steel wire stirrups in the positive direction and the negative direction are wound around the outer portion of the barrel net, and therefore, the large-span horizontal pulling type cylindrical net-shaped pedestrian landscape suspension bridge is formed. The single-blade double-curved-surface cylinder net-shaped space cables, the oval rigid stiffening rings and the double-helix steel wire stirrups work cooperatively, the torsional rigidity and lateral rigidity of the pedestrian suspension bridge are improved, and the pedestrian suspension bridge has good wind-resistant stability. According to the bridge tower anchoring barrel net-shaped space cable with the curved double-limb pier column and the huge oval steel ring tower cap, the weight of a single-strand cable is reduced through the scattered barrel net-shaped space steel wire cable, and construction is convenient. A transparent glass bridge deck is embedded in a bridge deck truss, cirrus grass is wound on the cylinder net-shaped space cable in a double-spiral mode, sunlight is shielded, ecological and environment-friendly effects are achieved, the appearance is attractive, tourists walk in the cylinder net-shaped suspension bridge, and personal safety can be guaranteed.
Owner:张家港保税区金港建设工程质量检测有限公司

Horizontal pulling type pedestrian suspension bridge of hyperbolic paraboloid space cross cable net

A horizontal pulling type pedestrian suspension bridge of a hyperbolic paraboloid space crossed cable net is characterized in that a hyperbolic paraboloid space crossed cable net system is formed by spatially crossing a plurality of steel wire cables, and the spatial configuration of the hyperbolic paraboloid space crossed cable net is a cable net with an upward notch formed by drooping of the hyperbolic paraboloid space crossed cable net; the double-limb column bridge tower is composed of a double-limb column frame and a parabola concave cover beam, the hyperbolic paraboloid space cross cable net system is hung on the parabola concave cover beam of the double-limb column bridge tower, and the back inhaul cable is divided into a left strand and a right strand to be anchored in the anchorage. The bridge deck structure system in the form of a pipe truss structure is placed in a groove of the hyperbolic paraboloid space crossed cable net system. The hyperbolic paraboloid space cross cable net is arranged in an inclined cross mode, the inclined cross cables can provide horizontal component force, lateral stiffness and torsional stiffness are improved, the horizontal pulling type suspension bridge is prevented from swinging and shaking by a large margin left and right, wind resistance stability is improved, and the hyperbolic paraboloid space cross cable net has the advantages of being simple and light in structure, thin and smooth in shape and fresh and elegant in aesthetic feeling.
Owner:JIANGSU SINOROAD ENG TECH RES INST CO LTD

Step-back hole mold

The invention provides a step-back hole mold which comprises a hole frame sleeve, a reinforcing flange and a cover plate, wherein a plurality of inverted steps are formed on the outer wall of the holeframe sleeve and towards the outer side of the hole frame sleeve from bottom to top, the reinforcing flange is used for installing a hole formwork, the edges of a lower opening of the hole frame sleeve extend towards the inner side of the hole frame sleeve to form the reinforcing flange, and the reinforcing flange is arranged on the edges of the lower opening by a circle in the circumferential direction; and the cover plate is used for shielding an upper edge of the hole frame sleeve, and the cover plate can be foldably installed at the top of the hole frame sleeve. The step-back hole mold solves the problems of poor positioning effect, poor protection effect and easy water leakage of a traditional aluminum mold material transferring port mold.
Owner:CHINA CONSTR EIGHT ENG DIV CORP LTD

Large-span space cable net system suspension bridge

The invention discloses a large-span space cable net system suspension bridge, and belongs to the field of civil engineering. The large-span space cable net system suspension bridge mainly comprises arch-shaped bridge towers, main cables, suspension rods, parallel cables, space cable nets, back cables, arch-shaped ring beams, stiffening steel beams, anchorages, bearing platforms, pile foundationsand other structures. A Bessel curve is applied to optimize a traditional portal bridge tower, so that the line shape of the portal bridge tower is smoother, and the anchoring requirement for arranging space cables can be met more easily; the space cable net is arranged in a hyperbolic paraboloid form, so that the space rigidity and the flutter critical wind speed of the cable system are effectively improved; and meanwhile, the excellent mechanical property of the uniparted hyperboloids is applied to improve the appearance of a traditional pile foundation pile body, and the anti-overturning performance is obviously improved under the condition that the anti-bending and anti-shearing bearing capacity of the pile foundation pile body is guaranteed. The large-span space cable net system suspension bridge provided by the invention can greatly improve the wind-resistant stability of the suspension bridge, and can be used as a reference for constructing the large-span space cable net systemsuspension bridge.
Owner:SOUTHEAST UNIV

Passive gravity compensation branched chain of spatial parallel mechanism

A passive gravity compensation branched chain of a spatial parallel mechanism comprises a balance weight, a bisynchronous telescope branched chain, a middle Hooker hinge and a spherical hinge, wherein the middle section of an external bar of the bisynchronous telescope branched chain is connected with a fixed platform of the spatial parallel mechanism through the middle Hooker hinge; the rotating center of the middle Hooker hinge coincides with the geometric center of the fixed platform; the balance weight is fixedly connected with one end of the bisynchronous telescope branched chain; the other end of the bisynchronous telescope branched chain is connected with a movable platform of the spatial parallel mechanism through the spherical hinge; the centroid of the middle Hooker hinge, the rotating center of the middle Hooker hinge and the rotating center of the spherical hinge are collinear; and the distance between the centroid of the balance weight and the rotating center of the middle Hooker hinge is the same as that between the rotating center of the spherical hinge and the rotating center of the middle Hooker hinge. Through the adoption of the passive gravity compensation branched chain, the branched chain static driving force generated by the gravity is eliminated, and the passive gravity compensation branched chain is simple in structure, reasonable in layout, and convenient to use, does not need a driving unit, reduces the branched chain driving force of the spatial parallel mechanism, improves the efficiency and the dynamic characteristics of the mechanism, and is favorable for fully giving play to the advantage of the potential performance of the spatial parallel mechanism.
Owner:TSINGHUA UNIV

A seagull-style space back-cable cable-stayed bridge system

This application relates to a seagull type space cable-stayed bridge system, including bridge towers, cable-stayed cables, main girders, side piers, middle piers, back cables and cables, and relates to the technical field of bridge engineering, wherein the bridge towers are designed as Arc-shaped, the two ends of the back cable are anchored to the top of the bridge tower respectively, and one end of the cable is connected to the back cable, and the other end is anchored to the root of the bridge tower, so that the bridge tower, back cable and cable form a three-dimensional frame structure, which can be Improving the spatial stiffness of the cable-stayed bridge is beneficial to resist the effects of dead load and live load, and the back cable can be stretched at the top of the tower to adjust the cable force, and the stay cable can be stretched at the root of the bridge tower to adjust the cable force. In order to improve the stress state of the bridge tower under the action of its own weight and the tension of the stay cables, the line shape of the bridge tower is close to the reasonable arch axis, and the bending moment on the root of the bridge tower is reduced, that is, there is no need to change the cross-section of the tower bottom The size is designed to be very large, so the application can not only enhance the spanning capacity of the cable-stayed bridge, reduce material loss and cost, but also enhance the aesthetic feeling of the bridge.
Owner:CHINA MAJOR BRIDGE ENERGINEERING

A large-span multifunctional robotic engineering construction equipment

The invention discloses large-span multifunctional roboticized engineering construction equipment and belongs to the technical field of civil engineering construction mechanical equipment. The large-span multifunctional roboticized engineering construction equipment comprises a plurality of supporting stand columns, steel wire rope driving units, steel wire rope guide devices, steel wire ropes, a controller and an end effector. The steel wire rope driving units, the steel wire rope guide devices and the steel wire ropes are matched with the supporting stand columns. The multiple supporting stand columns are arranged around the construction area, and a hydraulic cylinder is arranged in each supporting stand column to achieve ascending and descending of the supporting stand column in the vertical direction. Each steel wire rope driving unit is fixed to one side of the corresponding supporting stand column. The steel wire rope guide devices are arranged at the top ends of the supporting stand columns. One end of each steel wire rope is connected with the corresponding steel wire rope driving unit, and the other end of each steel wire rope penetrates the corresponding supporting stand column to be connected with the end effector after reaching the corresponding steel wire rope guide device. Remote control over the end effector is achieved through the controller, the large-span multifunctional roboticized engineering construction equipment can do wide-range large-span three-freedom-degree motion, the corresponding end effector is used in cooperation, and the work of punching and piling, wall breakage, pavement reconstruction and material carrying is completed.
Owner:TSINGHUA UNIV

A thin-walled cylindrical soil core pile with wings

The invention provides a thin-walled cylindrical soil core pile with wings. The thin-walled cylindrical soil core pile can serve as a supporting body and a temporary facility such as emergency hydraulic rescue, the thin-walled cylindrical soil core pile is made of metal, the middle of the soil core pile is a thin-walled cylinder, a front wing plate and a rear wing plate are arranged at the front end and the rear end of the thin-walled cylinder respectively, a fastening portion is arranged on the front wing plate and used for splicing with a rear wing plate of a front pressing pile in a guiding manner, and a sharp edge is arranged at the bottom of the pile, so that the pile can be smoothly pressed into soil. Various thin-walled cylindrical soil core piles can be sequentially pressed into the soil in a section divided manner, so that the front of one soil core pile is connected with the tail of other soil core pile to form an entire soil core pile, the soil core pile serves as the supporting body when soil is excavated, space stiffness of the pile cylinder and stability of the supporting body are improved by combined actions of the closed thin-walled cylinder, the two wing plates of the pile and a soil core, soil can not be reconstructed, so that surrounding residents cannot be disturbed, construction cost is reduced, the pile can be drawn out after supporting is finished, the pile can be repeatedly used, labor and materials are saved, and environments are protected.
Owner:福州鼓楼纹英建筑工程有限责任公司

Assembled formwork support device for special-shaped concrete cavity

The invention discloses a fabricated mold plate supporting device of a shaped concrete tunnel body. The fabricated mold plate supporting device comprises a plurality of lattice columns, one or more layers of plane truss beams are arranged on a square columnar support composed of all lattice columns in the height direction, and the plane truss beams include a plurality of transverse truss beams fixedly connected between two adjacent lattice columns and a plurality of longitudinal truss beams connected between two adjacent and parallel transverse truss beams; tension chord truss beams are fixedly installed between the lattice columns at the edge of the top end of the columnar support, the plane truss beams are installed at the top ends of the lattice columns located in the space enclosed byall tension chord truss beams, and the plane truss beams at the top ends of the lattice columns and the tension chord truss beams are fixedly connected through the transverse truss beams and the longitudinal truss beams; and a plurality of supporting mechanisms for supporting the side faces of mold plates are arranged on the two lines of the lattice columns which are parallel to the longitudinal truss beams and located at the outermost layer in the height direction.
Owner:SOUTHWEAT UNIV OF SCI & TECH

Reinforced concrete plate with three-dimensional grid geocell

The invention discloses a reinforced concrete plate with a three-dimensional grid geocell, and belongs to the technical field of constructional engineering. The reinforced concrete plate comprises an upper-layer steel bar, a lower-layer steel bar, the three-dimensional grid geocell and a concrete pouring part. The three-dimensional grid geocell is arranged between the upper-layer steel bar and the lower-layer steel bar and positioned within the plate area range through a plurality of fixing pieces, and the three-dimensional grid geocell is filled with the concrete pouring part and poured compactly. The reinforced concrete plate with the three-dimensional grid geocell is simple in structure, the space rigidity of the concrete plate is enhanced, the problems that stirrup bars or erection bars need to be arranged in the reinforced concrete plate, and buried pipelines in the plate are difficult to lay are solved, and sub-bin pouring or reinforcing band construction of the plate area is facilitated. In addition, when the concrete plate has the space structure slope, the three-dimensional grid geocell can serve as an anti-skid unit to limit sliding and stacking of concrete aggregate towards the slope bottom in the pouring process, the construction difficulty is reduced, and the convenience and efficiency of field operation are improved.
Owner:SHANGHAI ELECTRIC POWER DESIGN INST

Formwork Supporting Device for Concrete Support Construction of Well Roadway Engineering

The invention discloses a template supporting device for concrete supporting construction of shaft and lane engineering and relates to a template supporting device for cast-in-place concrete of shaft and lane engineering. The template supporting device comprises wall templates and a vault template and is characterized in that the template supporting device comprises steel joists and fixing anchor rods, wherein each steel joint comprises a cross arm, stand columns and a vault beam; each fixing anchor rod comprises a rod body, a cover plate and a nut; the steel joints are mounted at intervals in the length direction of the poured concrete roadway, and the rod bodies penetrate through the steel joists and are fixed in surrounding rock; the wall templates and the vault template are laid on two steel joists, concrete is poured between the surrounding rock and the templates, and the wall templates and the vault template are laid sequentially with increasing of height of the poured concrete; the steel joists are dismounted after concrete setting, the concrete surface is covered with the cover plate, and composite supporting is formed. The template supporting device has the advantages that the template supporting device is novel in concept, stable and firm in structure, simple to manufacture, convenient to mount and capable of being repeatedly used and wood materials are saved; the roadway is unimpeded, the construction is convenient, and the production efficiency is improved; the strength of the steel joists is high and integrally connected with the surrounding rock to form a stereoscopic structure, and the strength of the supporting device is greatly improved.
Owner:MAGANG (GROUP) HOLDING CO LTD
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