6results about How to "Reduced durability" patented technology

This invention relates to machining tools and surface finishing methods using the DL (deep-drilling) method, the tools comprising ceramic-metal composites with uniformly polished surfaces. In some embodiments, the machining tool exhibits compressive stress less than -500 MPa after polishing, or equal to or greater than 40% of the compressive stress generated during the grinding process. In some embodiments of the invention, the machining tool has a uniformly polished surface along the cutting edge, i.e., perfect flatness between the metal and ceramic components of the tool, such that the roughness of the cutting edge is in the sub-micron range. In some cases, the machining tool has a roughness variation along the cutting edge and adjacent surfaces along the tool's uniform or regular cutting edge.

The utility model relates to bridge engineering technical field, and disclose a kind of steel box girder and concrete pier column consolidation structure, including steel box girder, concrete pier column, shear nail and the adjusting member for adjusting the elevation of steel box girder installation, concrete pier column top is reserved with shear key, steel box girder bottom is equipped with for with concrete pier column top socket joint connection's notched, concrete pier column top outer circumferential wall is equipped with the slope of being inserted easily, concrete pier column top is inserted in the inside of notched, adjusting member includes jacking corbel and jack, jacking corbel is connected by bolt with the reserved planting bar on the outer wall below concrete pier column, jack is installed in jacking corbel top, jack top and steel box girder bottom are abutted. The present application is simple in structure, high in precision of factory prefabrication, force transmission is direct in socket design, stress concentration is small, and the elevation of section member is accurately adjusted, convenient for construction, applicable to complex environment and large-span bridge.

An X-ray image acquisition device includes a pixel unit having M pixel arrays each including N pixel portions (N and M are integers of 2 or more), M circuit units, and a control unit. Each circuit unit includes T (T is an integer of N or more) adding sections that sequentially add electrical signals corresponding to output signals from the N pixel portions and a switch section for switching connection states between the N pixel portions and the T adding sections. The control unit switches the connection states in synchronization with the transportation of an object along a first direction so that the electrical signals corresponding to the output signals output from the pixel portions by detecting X-rays transmitted through the same region of the object are added by the same adding sections.

The invention relates to the technical field of metal composite plates, in particular to a ship metal composite plate structure and an operation method.The ship metal composite plate structure comprises a first metal plate, the inner wall of one side of the first metal plate is fixedly connected with side plates, the outer walls of the upper side and the lower side of the first metal plate are fixedly connected with top plates, and the opposite sides of the two side plates are fixedly connected with a second metal plate; the opposite sides of the two top plates are fixedly connected with the upper side and the lower side of a second metal plate. The first metal plate and the second metal plate form a tight whole through mechanical locking of the inserting rod and the cavity, when external force is borne, stress can be evenly distributed in the connecting area between the inserting rod and the metal plates instead of being concentrated on an adhesive layer interface, the bearing capacity of the structure is remarkably improved through the overall stress mode, and the service life of the structure is prolonged. The situation that the overall mechanical property and durability of the material are reduced due to the fact that the adhesive layer is prone to being influenced by factors such as environment temperature and humidity and aging and layering or debonding is generated at an interface is avoided.

This invention provides a front structure of a vehicle that offers good operability when installing and removing high-voltage wiring harnesses relative to high-voltage components located in the front region of the vehicle, and effectively protects the live parts and wiring harness connections when impact loads are applied from the front of the vehicle. In this invention, an electric compressor fixed to the front of the vehicle's engine E has a live part inside. A wiring harness connection for connecting a high-voltage wiring harness is provided in the outer peripheral region on the left side of the electric compressor in the vehicle width direction. The protective member includes: a first cover that covers the area corresponding to the live part from the front of the vehicle; and a second cover that is continuous with the first cover and located at a certain interval from the wiring harness connection to the front of the vehicle, covering the wiring harness connection from the front of the vehicle. A low-rigidity section with lower rigidity than the first and second covers is provided at the continuous portion between the first and second covers.

The utility model relates to a kind of polyurethane ball pin assembly, belong to ball pin assembly technical field.The polyurethane ball pin assembly includes: installation shell and ball pin;Protective mechanism, the protective mechanism includes the outer sleeve fixedly connected in the inner wall of installation shell, the inner wall of the outer sleeve is fixedly connected with anti-tear sleeve, the inner wall of the anti-tear sleeve is fixedly connected with inner sleeve, the surface lower end ball of the ball pin is hinged to the inner wall of inner sleeve;Through the inner sleeve of special polyurethane component has good self-lubricating characteristics, reduce the wear between the ball head of ball pin and inner sleeve, avoid frequent grease lubrication, and then guarantee the sealing effect between ball pin and inner sleeve, to reduce the wear between ball pin and inner sleeve, guarantee the service life of ball pin assembly, through the outer sleeve of special polyurethane component, inner sleeve and reinforcing rib, the impact force received by ball pin is dispersed, guarantee the stability and durability of installation shell dynamic performance, and then improve the service life of ball pin assembly.