5results about How to "Reduce stress levels" patented technology

The invention discloses an opposite-pull assembly for a UHPC bent cap formwork, the UHPC bent cap formwork and a combined bent cap. The opposite-pull assembly comprises an opposite-pull rod and a pair of opposite-pull rod fixing pieces arranged on the tops of a pair of formwork webs correspondingly. The opposite-pull rod fixing piece comprises a pre-buried fixing plate fixedly arranged on the inner surface of a formwork web and a clamping plate fixedly arranged on the outer surface of the formwork web, and through holes allowing the opposite-pull rods to penetrate through are formed in the areas, exceeding the top of the formwork web, of the pre-buried fixing plate and the clamping plate. And the end parts of the opposite pull rods penetrate through the through holes in the pre-embedded fixing plate and the clamping plate, and are fixed through an inner fastener positioned on the inner surface of the pre-embedded fixing plate and an outer fastener positioned on the outer surface of the clamping plate. The opposite-pull rod is arranged above the top of the formwork web, the opposite-pull rod can be dismantled and reused, and the economic performance is good. And meanwhile, holes are not required to be formed in the formwork webs for mounting the opposite-pull rods, so that the structural integrity of the formwork webs is better, and the appearance is more attractive.

This invention discloses a welding method for fabricating a three-dimensional reinforced steel / aluminum welded joint on a steel surface, belonging to the field of dissimilar metal welding technology. This invention employs laser selective melting to fabricate a three-dimensional geometric structure on the surface of a steel substrate, forming a surface with a high aspect ratio and high specific surface area. By using brazing or fusion brazing methods, the bonding area between the liquid aluminum and the steel plate and the three-dimensional geometric structure is greatly increased, effectively suppressing crack propagation and achieving a dual enhancement of the strength and toughness of the steel / aluminum dissimilar metal joint. This method increases the specific surface area of ​​the steel / aluminum joint interface, improving sliding resistance under external loads, while the three-dimensional geometric structure itself bears some of the stress. Simultaneously, the three-dimensional geometric interface structure can alleviate joint interface stress and improve stress distribution, which is beneficial for obtaining a welded joint with good performance.

This utility model discloses a plastic-coated steel pipe bend joint suitable for low-temperature conditions, comprising a bend section and straight pipe sections welded to both ends, forming a bend structure. It also includes: a stress buffer device comprising a corrugated compensator welded to the junction of the bend section and the straight pipe section, and a flow-damping orifice plate connected to the other end face of the corrugated compensator; and a damping sliding pair comprising a damping sliding tube fixed to the outer wall of the flow-damping orifice plate and a fixed damping kit fitted into the inner wall of the straight pipe section. The end face of the corrugated compensator connected to the flow-damping orifice plate is a free end that slides axially along the straight pipe section, and the damping sliding tube and the fixed damping kit achieve a sliding seal through an elastic seal. This utility model uses the sealing gas, the elastic material in the corrugated compensator, and the friction generated by the relative sliding of the damping sliding tube and the fixed damping kit to jointly counteract the pressure caused by frost heave, making the joint fully adaptable to low-temperature conditions.

The utility model discloses a kind of mobile phone screen module, it is related to screen module technical field, including outer screen, inner screen and the OCA glue layer being set between outer screen and inner screen, the inner screen is attached on the back of outer screen by OCA glue layer;Along the outer screen back periphery is equipped with stepped groove, the stepped groove includes the first step groove and the second step groove being connected, the first step groove is close to outer screen edge position, the second step groove is set in the first step groove inside, silk printing layer is equipped in the second step groove, to form the silk printing frame acting on outer screen by silk printing layer, wherein, the OCA glue layer is attached on the back of silk printing layer, the surface of first step groove and the back of outer screen located outside stepped groove;Effectively protect the silk printing layer, reduce its abrasion, cracking risk due to external force impact to some extent, to guarantee the integrity of silk printing frame and the long-term reliability of screen.

The application discloses a box, a battery device and a vehicle. The box comprises a bottom plate and a frame. The frame is arranged around the periphery of the bottom plate and defines a containing space. A first beam is arranged in the containing space. The first beam extends in a first direction and is connected to the frame in a second direction to divide the containing space into an electrical area and an energy area. The bottom plate comprises an energy area bottom plate and an electrical area bottom plate. The frame comprises a first frame arranged opposite in the first direction and a second frame arranged opposite in the second direction. The second frame, the electrical area bottom plate and the first beam that participate in defining the electrical area are configured as an integral piece. Thus, the force bearing interface can be expanded, the structural rigidity of the box, especially the bending and torsional rigidity, can be significantly improved, the structural rigidity and the anti-vibration fatigue performance of the box can be improved, the rigidity and the modal main frequency of the battery device can be improved, the deformation amplitude of the box structure in the vibration process can be reduced, the stress level can be reduced, and the fatigue strength can be improved.