57results about How to "Reduce additional bending moment" patented technology

The invention discloses a blunt trailing edge type wind turbine blade and a processing method thereof. The blade is made of a fiber laminating composite; trailing edge reinforced fiber single layers at the blunt trailing edge part are alternately laid along a pressure surface trailing edge line and a blunt trailing edge vertical part; reinforced fiber single layers at the sharp tailing edge part close to a blade tip are retracted towards the inner side of a die in a tangential direction and then laid to guarantee appropriate die closing clearance; as many reinforced fiber single layers as possible at the round tailing edge part close to a blade root get close to the tailing edge line in the tangential direction to guarantee an enough bonding width for die closing; the laying positions of the reinforced fiber laying layers in the blunt trailing edge vertical part can be flexibly designed according to demand of structural performance, and additional laying layers and laying layer angles can be increased. The trailing edge structure of the blade has higher connection strength and engineering operability, and trailing edge cracking and trailing edge instability can be effectively inhibited.

The invention relates to a stationary rail flash welder, comprising main frame and two primary rail racks 40 and 41. The main frame rack 42 is equipped with moving rack 16, static rack 17 and centering rack 22. The moving and static rack are connected with moving rack rail clamping cylinder 6 and static rack rail clamping cylinder 7 on the upper side respectively, static rack rail clamping cylinder 7 is connected with potential transformer cover 37, and the lower part of potential transformer is connected to rail electrode 38. The moving rack 16 is connected with cradle 42vthrough supporting axis 18 and lower supporting axis 19, and the insulated heading cylinder 3 is connected with cradle 42 and moving rack 16. The horizontal centering cylinder I on right of centering rack 22 is connected with static rack 17, and vertical centering cylinder 2 is connected with cradle 42. The moving and static rack is equipped with a unit of horizontal adjusting and locating device respectively. The horizontal clamping device of primary rail racks 40 and 41 on rail bottom is drove by cylinder 21 through rack bar 30, and rack bar 30 drives two gears to rotate and locate rail in horizontal direction. The vertical location for rail is finished by lifting gearing. The invention can obviously improve welder working condition and increases welding quality.

The invention relates to a luffing tower crane with a balanced type suspension arm based on traction luffing of a steel rope. The luffing tower crane comprises a tower body (6), a rotation support (12), a tower top (9), a suspension arm (3), a lifting hook component (5), a balanced arm (8), a counter weight (11) and a luffing mechanism (10) and is characterized in that: the suspension arm (3) comprises a jack-up end (301) and an integrated structure which consists of a counter weight end (302) opposite to the jack-up end (301); the jack-up end (301) of the suspension arm (3) comprises the lifting hook component (5); a hinged seat (303) is arranged close to the gravity center position of the suspension arm (3) and hinged with the tower top (9); and one end of a luffing steel rope (2) of the luffing mechanism (10) is directly connected to the jack-up end (301) of the suspension arm (3) or connected to the jack-up end (301) through a pull rod group (4). By the tower crane, the additional bending moment of the suspension arm (3) on the tower body (1) can be effectively reduced, so the jack-up performance of the tower crane can be greatly improved, and the power of the luffing mechanism and the diameter of the luffing steel rope are reduced.

The invention discloses a jacking system for a closure section of a continuous rigid frame bridge and a jacking deviation rectifying method. The jacking system is composed of a top plate jacking system and a bottom plate jacking system. The top plate jacking system comprises two sets of top plate embedded bases arranged at the ends of two cantilever beam sections of the continuous rigid frame bridge correspondingly, top plate rigid supporting structures supported between the two sets of top plate embedded bases and a top plate jacking mechanism. The bottom plate jacking system comprises two sets of bottom plate embedded bases arranged at the ends of the two cantilever beam sections correspondingly, bottom plate rigid supporting structures supported between the two sets of bottom plate embedded bases and a bottom plate jacking mechanism. The jacking deviation rectifying method comprises the steps of (1) measurement of position deviation of the cantilever beam sections, (2) adjustment of elevation deviation of the cantilever beam sections, (3) deviation rectifying adjustment and (4) longitudinal jacking. The jacking system is simple in structure, reasonable in design, easy and convenient to construct and good in using effect, the jacking deviation rectifying process of the cantilever beam sections on the two sides of the closure section can be completed easily, conveniently and rapidly, and the rectifying requirements of lateral deviation and reverse deviation of the cantilever beam sections can be met.

The invention discloses an overlap-connected shape-adjusting device used for a reflecting mirror for a heliostat, which is arranged on the back of the reflecting mirror for the heliostat and fixedly connected with a bracket of the heliostat. The overlap-connected shape adjusting device comprises a plurality of overlap-connected shape-adjusting connecting pieces, at least one central shape-adjusting connecting piece and a shape adjusting claw; the central shape-adjusting connecting piece is arranged at the center of the corresponding shape adjusting claws; the shape adjusting claw is fixed on the back of the reflecting mirror through the central shape-adjusting connecting piece; the claw ends of the corresponding shape adjusting claw are fixed on the back of the reflecting mirror through the overlap-connected shape-adjusting connecting pieces; and the overlap-connected shape-adjusting connecting pieces are connected and fixed on the bracket of the heliostat. The overlap-connected shape-adjusting device used for the reflecting mirror for the heliostat has the advantages of simple structure, high shape-adjusting control efficiency and better focusing alignment quality.

The invention relates to a stationary rail flash welder, comprising main frame and two primary rail racks 40 and 41. The main frame rack 42 is equipped with moving rack 16, static rack 17 and centering rack 22. The moving and static rack are connected with moving rack rail clamping cylinder 6 and static rack rail clamping cylinder 7 on the upper side respectively, static rack rail clamping cylinder 7 is connected with potential transformer cover 37, and the lower part of potential transformer is connected to rail electrode 38. The moving rack 16 is connected with cradle 42vthrough supporting axis 18 and lower supporting axis 19, and the insulated heading cylinder 3 is connected with cradle 42 and moving rack 16. The horizontal centering cylinder I on right of centering rack 22 is connected with static rack 17, and vertical centering cylinder 2 is connected with cradle 42. The moving and static rack is equipped with a unit of horizontal adjusting and locating device respectively. The horizontal clamping device of primary rail racks 40 and 41 on rail bottom is drove by cylinder 21 through rack bar 30, and rack bar 30 drives two gears to rotate and locate rail in horizontal direction. The vertical location for rail is finished by lifting gearing. The invention can obviously improve welder working condition and increases welding quality.

The invention provides a suspension bridge with three main cables and double tower columns. The suspension bridge is characterized by comprising a main girder, the tower columns, bridge tower transverse beams, the edge side main cables, the middle main cable and anchorage; the main girder is of an integral type structure or a split type structure; the tower columns are arranged on two sides of themain girder in pairs, are positioned on upstream sides and downstream sides, are solidified with the earth and are used for bearing the edge side main cables and the main girder; the bridge tower transverse beams include an upper bridge tower transverse beam, a middle bridge tower transverse beam and a lower bridge tower transverse beam and are solidified between the tower columns arranged in pairs; the edge side main cables are mounted on the tops of the tower columns via edge side cable saddles and are connected with the tops of two sides of the main girder by edge side suspension cables; the middle main cable is mounted on the top of the middle of the upper bridge tower transverse beam via a middle cable saddle and is connected with the top of the middle of the main girder by a middlesuspension cable; the edge side main cables and the middle main cable are solidified with the earth via the anchorage. The suspension bridge with the three main cables and the double tower columns hasthe advantages that the sizes of the main girder and cable towers can be effectively diminished, the engineering cost can be lowered, and the stress performance of the main girder can be greatly enhanced.

The invention relates to a diaphragm coupling with low additional bending moment. The diaphragm coupling comprises a middle isolating shaft, diaphragms, a mounting disc and switching discs, wherein the diaphragms are symmetrically arranged at the two ends of the middle isolating shaft; and the diaphragm coupling is characterized in that: the diaphragms and the mounting disc are in an integrated structure. The mounting disc is inserted into the switching discs; the diaphragms are positioned with the switching discs by using convex concave seams and are connected with the switching discs through first bolt components to transfer torsion moment; and the switching discs are positioned with the middle isolating shaft by using positioning rings and are connected with the middle isolating shaft through second bolt components to transfer torsion moment. One end of each switching disc is a first connecting end which is connected with the diaphragm, and the other end of the switching disc is a second connecting end which is connected with the middle isolating shaft; and a disc body of the switching disc is arranged between the first connecting end and the second connecting end. The profile of the disc body is right-angled or obtuse. In the diaphragm coupling, the diaphragms and the mounting disc are designed to be in the integrated structure; the diaphragm coupling has a simple structure and light weight; and the weight and the additional bending moment of the diaphragm coupling are effectively reduced.

The invention discloses an insertion opening crack resisting structure for prestressed concrete cylinder pipes (PCCPs) and a manufacturing method of the structure, and belongs to the technical field of composite concrete pipes. The insertion opening crack resisting structure for the PCCPs comprises a deformation joint reserved on the outer side of an insertion-opening-end special-shaped steel ring, a thin steel ring lined to an insertion-opening-end pipe core and steel fiber reinforced concrete adopted as the insertion-opening-end pipe core. The steel fiber reinforced concrete is used at the PCCP insertion opening end and the inner wall of the PCCP insertion opening end is lined with the thin steel ring, so as to improve bending resistance of the insertion opening end, resist to additional bending moment caused by the fact that pipelines wind prestressed wires and reduce large outward turning deformation of the insertion opening end pipe core; the deformation joint is reserved on the outer side of the insertion-opening-end special-shaped steel ring, so that pipeline deformation compatibility is met, additional bending moment is lowered, ring cracks are prevented from transferring to the concrete of the inner wall of the pipe core, and production quality and durability of the PCCPs can be improved significantly; the crack resisting structure can realize seamless joint with the existing PCCP production way, and has the advantages of simplicity in operation and low cost.

The invention discloses a hoisting mechanism of a gantry crane. The hoisting mechanism comprises a left hoisting assembly (1) and a right hoisting assembly (2) which are symmetrically arranged on a trolley rack (3), wherein the left hoisting assembly (1) and the right hoisting assembly (2) are in movable connection with the trolley rack (3), so that the left and right hoisting assemblies move leftward and rightward relatively to the trolley rack; and the contact hoisting points between the left hoisting assembly (1) and a hoisting tool (4) as well as between the right hoisting assembly (2) and the hoisting tool (4) are located just above the hoisting point of the locking and hoisting object of the hoisting tool (4). By adopting the hoisting mechanism, the stresses of the hoisting tool and the trolley rack are improved, thus the weights of the hoisting tool and the trolley rack are alleviated, the hoisting load is alleviated and the energy is saved. In addition, the invention also discloses the gantry crane comprising the hoisting mechanism.

The invention discloses a connection structure between a beam and a column in a glass curtain wall and a construction method thereof. The connecting piece is inserted into the frame slot at the front end of the crossbeam, the horizontal positioning screw is fixed to the column through the screw hole and the connecting hole, and the longitudinal connecting screw is fixed to the crossbeam through the fixing hole; it also includes A rear-end positioning screw arranged perpendicular to the outer wall of the column, a limiting groove is provided on the rear side wall of the beam, and the rear-end positioning screw is connected to the column through the limiting groove and the positioning hole. In the present invention, the front end of the cross beam is connected to the cross bar and the upright column by means of screw insertion by the connecting piece, which is more convenient to connect and easy to disassemble and adjust. Prevent the beam from turning over, improve the installation accuracy and the aesthetics of the exterior wall.

The invention discloses a beam and column connection structure in a glass curtain wall and a construction method thereof. The beam and column connection structure is characterized by comprising a connecting piece at the position where a beam and a column are connected, transverse locating screws and longitudinal connecting screws, wherein the transverse locating screws and the longitudinal connecting screws are used for fixing the connecting piece. The connecting piece is inserted into an auxiliary frame insertion groove at the front end of the beam. The transverse locating screws are fixed with the column through screw holes and connecting holes. The longitudinal connecting screws are fixed with the beam through fixing holes. The beam and column connection structure further comprises a back end locating screw perpendicular to an outer wall of the column. A back side wall of the beam is provided with a limit groove. The back end locating screw is connected with the column through the limit groove and locating holes. The front end of the beam is connected with a cross rod and the column through the connecting piece in an screw inserting mode. The beam, the cross rod and the column can be connected conveniently and are easily to be dismantled and adjusted. The back end of the beam is connected with the column through the back end locating screw, the vertical position is limited by the limit groove to prevent the beam from overturning, and the installing precision and aesthetics of the outer wall are improved.

The invention provides a dynamic regulation and control system for a bidirectional steel supporting structure. The dynamic regulation and control system for the bidirectional steel supporting structure comprises the bidirectional steel supporting structure, axial force loading tools and a control center. The bidirectional steel supporting structure comprises flexible joints which are located at junctions of horizontal supports and vertical supports. Each flexible joint comprises an outer box, an inner box, a first connecting assembly and a second connecting assembly, wherein a first hole and a second hole coaxial with the first hole are formed in the surface of the outer box, and the inner box is arranged in the outer box; the first connecting assembly and the second connecting assembly penetrate through the first hole and the second hole correspondingly to be connected with the inner box; and elastic elements are arranged between the outer wall of the inner box and the inner wall of the outer box. The axial force loading tools are used for axial force loading of the horizontal supports or the vertical supports. The control center is used for controlling the working states of the axial force loading tools. By adoption of the dynamic regulation and control system for the bidirectional steel supporting structure, the problems that in the prior art, the additional bending moment of the bidirectional steel supporting structure is too large during axial force loading, and the bidirectional steel supporting structure cannot be regulated and controlled in real time are solved.

The invention discloses a steel plate energy dissipation shear wall system manufacturing method capable of adopting heat treatment to weaken strength. First, a body structure comprising frame columns and frame beams is constructed, after the top of the body structure is sealed, embedded steel plates of all steel plate shear walls are connected with fishplates, the embedded steel plates are carbon constructional steel plates obtained after heat treatment, the heat treatment process meets the following requirements that when the carbon constructional steel plates are made of Q235 steel plates, the yield strength is reduced by 24-31%, the limit strength is reduced by 10-12%, and the yield ratio is 0.49-0.54; when the carbon constructional steel plates are made of Q345 steel plates, the yield strength is reduced by 38-41%, the limit strength is reduced by 30-32%, and the yield ratio is 0.64-0.65. The common steel is adopted as the raw material and used for manufacturing shear walls after heat treatment, the shear walls have good performance similar to that of low-yield-point steel plate shear walls, manufacturing is convenient, and the raw material is common, easy to obtain and high in economical efficiency.

The invention provides a self-adaptive circulating lubricating system for a sliding bearing and belongs to the technical field of bearing lubricating systems. The self-adaptive circulating lubricating system is characterized by comprising a filter (2), a pressure-cutting oil supply device (4) and a heat exchanger (6); the liquid outlet end of the filter (2) communicates with the liquid inlet end of the pressure-cutting oil supply device (4), and the liquid outlet end of the pressure-cutting oil supply device (4) communicates with the liquid inlet end of the heat exchanger (6); the sliding bearing (1) is provided with an oil inlet hole and an oil outlet hole, the liquid inlet end of the filter (2) communicates with the oil outlet hole of the sliding bearing (1), and the liquid outlet end of the heat exchanger (6) communicates with the oil inlet hole of the sliding bearing (1); and a rotary shaft for mounting the sliding bearing (1) is connected with the power input end of the pressure-cutting oil supply device (4). The self-adaptive circulating lubricating system for the sliding bearing has the beneficial effects that by simplifying an external circulating structure of the sliding bearing, lubricating oil is circulated by the adoption of the same power source, the capacity of a main drive device is fully utilized, the occupied area is saved, and the consumption of the electric energy is reduced.