39results about How to "Avoid Welding Stress" patented technology

The invention discloses an automatic paper-cup ice cream filling machine belonging to food filling machinery. The automatic paper-cup ice cream filling machine comprises a rack, a power mechanism, a filling mechanism and a caterpillar mechanism, wherein the rack consists of a cross beam support, a first cross beam, a second cross beam and a group of cross beam supports; the power mechanism is arranged at one end of the rack; the filling mechanism is arranged at the other end of the rack; the caterpillar mechanism is arranged between the first cross beam and the second cross beam; a first horizontal folding edge is formed at the upper part of the first cross beam, a first vertical folding edge is formed on the first horizontal flange, a second horizontal folding edge is formed at the lower part of the first cross beam, a third horizontal folding edge is formed at the upper part of the second cross beam, a second vertical folding edge is formed on the third horizontal folding edge, and a fourth horizontal folding edge is formed at the lower part of the second cross beam; fixed flange seats are respectively fixed at the two ends of the group of cross beam supports; and the power mechanism comprises a motor, a reduction gearbox, a main transmission wheel, a cam, a pawl, a large sprocket shaft, a ratchet wheel disc, a first large sprocket, a second large sprocket and an inertia elimination device. The intensity of the cross beams is ensured, the safety is ensured, and the reliability of movement and pause of paper cups carried by the caterpillar mechanism is ensured.

The invention relates to the technical field of aeroengines, and particularly provides a fan case with damping. The machining scheme that a case is welded with each stator blade is adjusted to the scheme that an integral-ring stator blade with a second external ring is inserted into a first external ring, welding and heat treatment processes are removed, and a damping layer is additionally arranged between the case and a blade external ring, so that the problems that the axial length of a wear-resistant coating is not sufficient, a margin plate is large and the case allowance is small caused by case deformation, stator blade body dislocation and a small axial clearance of a rotating stator are solved, and the antivibration ability of the fan case is improved.

The invention discloses a local reinforcement device for the foundation ring of a wind power generating set, which includes the original reinforced concrete foundation and a local reinforcement device; the local reinforcement device includes a newly poured reinforced concrete foundation, an inner steel splint unit, an outer steel splint unit, and a plurality of inner steel splints The units are arranged in a ring on the upper inner wall of the foundation ring of the original reinforced concrete foundation, and a plurality of outer steel splint units are arranged in a ring on the upper outer wall of the foundation ring, and the newly poured reinforced concrete foundation is poured on the original reinforced concrete foundation. The present invention disperses and transmits the load generated by the fan operating state borne by the foundation ring through the inner and outer steel splint units, connecting steel bars, and inner and outer foundation negative bending bars, effectively reducing the stress in the reinforced foundation ring and slowing down the fatigue of the fan foundation damage, greatly increasing the service life of the reinforced wind turbine foundation. The invention also discloses a local reinforcement method for the foundation ring of the wind power generating set.

Concrete upper ribs and floors of a novel steel-concrete combined open web girder system are made of cast-in-place concrete and form an orthogonal cross shape; holes are formed in reverse T-shaped joints of combined components so that concrete can be conveniently cast into the holes and shear connectors can be formed; reverse T-shaped steel pipes and U-shaped steel plates are all prefabricated in a factory, in the use process, the U-shaped steel plates penetrate through reserved holes in the bottoms of the reverse T-shaped steel pipes, and the T-shaped steel pipes and the U-shaped steel plates are positioned through high-strength bolts of bottom plates, and concrete is cast into the shear connectors into a whole. The system has the advantages that the structural deadweight is reduced, and rigidity is less reduced; the size of the shear connectors is reduced, and the rigidity of the shear connectors is improved; tensile force is borne by the square steel pipes, the steel pipes participate in shear resistance at the joint shear connectors, and the mechanical performance of materials is brought into full play; no welding or formworks are needed, welding stress and deformation are avoided, construction procedures are reduced, and construction efficiency is greatly improved.

The invention discloses a novel steel-concrete combined open web girder and a manufacturing method thereof. The open web girder comprises upper-portion rectangular portion reinforced concrete, lower-portion pulled steel plates, end arc-shaped steel pipes and steel plate hoops, wherein longitudinal steel bars are reserved at two ends of the upper-portion rectangular portion reinforced concrete, the longitudinal steel bars are inserted into the end arc-shaped steel pipes together with the ends of the upper-portion rectangular portion reinforced concrete, then concrete is cast into the end arc-shaped steel pipes, and the upper-portion rectangular portion reinforced concrete is anchored and connected with the end arc-shaped steel pipes together after the concrete reaches the design strength. The problems of slippage between the concrete and section steel in a traditional steel-concrete combined girder, welding stress and deformation caused by welding, large formwork consumption, low construction efficiency and the like are solved, the steel-concrete combined open web girder has good mechanical properties, the open web position of the girder facilitates layout of special water heating and electrical pipelines, and accordingly building space is saved.

The invention relates to the technical field of aero-engines and particularly provides a fan cartridge receiver assembled through a thread. A machining scheme of welding the cartridge receiver and each stator blade is adjusted into a scheme of screwing a whole ring of stator blades with a second outer ring into a first outer ring, welding and heat treatment processes are omitted, the problems of insufficient abrasion-resistant coating axial length, large-margin-plate small cartridge receiver allowance and the like caused by cartridge receiver deformation, stator blade body malposition and small axial clearances of the stator blades are solved, and the vibration-resistant capability of the cartridge receiver is improved.

The invention discloses an automobile exhaust pipe structure, and provides an exhaust pipe structure which is simple in structure and ingenious in conception, can eliminate welding stress and avoid breakage of welding ports of an inner pipe and an outer pipe of the exhaust pipe due to high temperature and low temperature alternation, and solves the technical problems that when an automobile runs in a cold area, the welding ports at the two ends of the exhaust pipe are easy to break due to the high temperature and low temperature alternation, the abnormal sound of the exhaust pipe is caused, and even seriously, the failure of the exhaust pipe is caused in the prior art. The exhaust pipe structure comprises an inner barrel and an outer barrel, wherein the inner barrel is coaxially sleeved and covered with the outer barrel; one end of the outer barrel is welded and fixed on the corresponding inner barrel; an elastic piece is sandwiched between an internal wall surface at the other end of the outer barrel and a corresponding external wall surface of the inner barrel; and the inner barrel is supported in the outer barrel by the elastic piece elastically.

The horizontal traction water hydraulic machine comprises the bay, main working cylinder, kicker cylinder, active beam, front beam, rear beam, bottom mold beam, kicker beam and base beam, featuring in the horizontal arrangement, prestress combined bay, two side kicker cylinders also working as the pulling post, forming into rigid force bearing frame with the front and rear beams and the bay, small stress fluctuation of the pulling post under the working load and small displacement of the front beam, ensuring the undeviation of the presser symmetrical line, good overall rigidity, high precision of alignment precision of the presser, acquiring extracting bottle blank with higher concentricity. It also has bracket system, alighting material platform, material discharging device and blanking robot.