6results about How to "Guaranteed stitching quality" patented technology

The invention discloses a horizontal splicing and pressing system and method for a long-specification sand core mold, and relates to the technical field of rocket engine shell forming and manufacturing. The system comprises a pressing mechanism walking track, a core shaft fixing and supporting mechanism, a core shaft supporting and lifting mechanism, a pressing mechanism, a sand cake supporting sleeve and the like. And through a horizontal splicing mode, the height limitation of a traditional vertical splicing plant is overcome, and the sand core mold sectional splicing device is suitable for sectional splicing of large-specification and long-size sand core molds. The pressing mechanism is provided with a pressure sensor, the pressing force between the sand cakes can be monitored in real time, and the phenomenon that the end faces of the sand cakes are crushed due to too large pressing force is avoided. According to the method, by means of the system, horizontal splicing and pressing of the sand core mold are achieved, and the operation safety and the production efficiency are improved.

The application relates to a cable tower beam construction method and a steel structure beam cable tower. Seamless steel pipes and prestressed bundles are arranged in the concrete of upper and lower partitions of tower columns corresponding to beams, after end section segments of the beams are hoisted and positioned, the end section segments and the tower columns are anchored by tensioning the upper and lower layer prestressed bundles. The end section segments of the multiple beam sections are anchored first, and then the middle section segments are hoisted and closed section by section. The connection between the beam sections adopts the mode of first three-face riveting positioning and then top-face welding fixing. The rivets can absorb and disperse energy through slight deformation, relieve stress concentration and avoid brittle fracture in the tensile zone. The reliable connection between the beam and the tower column is realized through double-layer prestressed bundles, and the stability of the structure stress is ensured through the riveting and welding combined connection mode of the multiple beam sections.

The application provides an SRAM module splicing method and device in a chip, the method comprising: performing a screening operation on an SRAM basic unit instance set to obtain a candidate basic unit set; sequentially taking each SRAM basic unit in the candidate basic unit set as a splicing main body, determining the maximum instantiation number and the current remaining capacity of the splicing main body, cyclically selecting an SRAM basic unit with a capacity closest to the current remaining capacity for supplementary splicing and updating the remaining capacity until the remaining capacity is less than or equal to zero to form an effective splicing solution; calculating a key feature index of each effective splicing solution and determining an optimal splicing solution; and generating a hardware description language code corresponding to the optimal splicing solution to encapsulate the spliced multiple SRAM basic units into a target SRAM module. The application can improve splicing efficiency and ensure splicing quality.

The invention provides a prefabricated self-resetting energy dissipation combination column structure, and relates to the technical field of seismic resistance and seismic mitigation and isolation devices. The device comprises an upper column body and a lower column body, two parallel connecting sliding rails are arranged at the bottom of the upper column body, a sliding groove is formed between the connecting sliding rails, a mounting hole communicated with the sliding groove is formed in the tail end of the sliding groove, and a self-resetting buckle which can slide along the sliding groove and is clamped with the mounting hole in a matched mode is arranged at the top of the lower column body. The limiting block and the connecting sliding rail are installed in a matched and sliding mode, and the top end and the bottom end of the limiting block are detachably connected with the upper column body and the lower column body through fasteners respectively. The connecting sliding rail at the bottom of the upper column body and the self-resetting buckle at the top of the lower column body are rapidly spliced to achieve rapid and stable installation of the column bodies, the advantage of being easy and convenient to construct is achieved, all components are prefabricated in a factory and rapidly assembled on a construction site, and material waste and environmental pollution are reduced while the connecting quality and safety are guaranteed; and the method has good economical efficiency.

The utility model discloses a pre-assembled curtain-wall-like strip-shaped window, which is characterized in that a prefabricated window frame is modularly pre-assembled in a factory, so that a constructor only needs to install the prefabricated window frame into an auxiliary installation frame in the on-site construction and installation process, the on-site construction workload is effectively reduced, and the on-site construction period is shortened; and the splicing quality can be effectively controlled, and the standardization degree is high.

This utility model belongs to the field of wood processing technology, specifically disclosing a high-efficiency adhesive dispensing and splicing system. It includes an adhesive dispensing mechanism for applying adhesive to wood veneers. A first conveying device is located at the front of the dispensing mechanism for conveying the (N+1)th veneer, with the feeding direction from front to back. A first cutting device for aligning the ends of the veneers is located at the rear of the dispensing mechanism. A second conveying device is located at the rear of the dispensing mechanism for conveying the Nth veneer. A second cutting device for aligning the ends of the veneers is located at the rear of the dispensing mechanism. The second cutting device can precisely align the ends of the veneers to ensure the veneer length meets splicing requirements, improving the accuracy and quality of splicing. A cold pressing device is located at the front of the dispensing mechanism for pressing and splicing the (N+1)th and Nth veneers. Its pressing process is stable and reliable, effectively reducing splicing defects. Its special arrangement reduces bonding waiting time and improves splicing efficiency.