9results about How to "Meet structural requirements" patented technology

The utility model relates to a kind of speaker box wire outlet structure, comprising: loudspeaker;Silica gel cover, its sleeve is equipped in the outside of loudspeaker;Wire rod, one end is connected with loudspeaker, and the other end of wire rod is threaded through silica gel cover, the outer wall of wire rod and silica gel cover contact is wrapped with sponge, the sponge is clamped on silica gel cover, and sponge is used for balancing the air pressure between loudspeaker and silica gel cover inner and outer cavities.The utility model's speaker box wire outlet structure, wire rod is wrapped with sponge, wire outlet mode clamped in wire outlet position, both can fix wire rod, and can reduce the process of glue fixing wire rod, make assembly more simple and fast, and have the effect of deflation and balancing air pressure in speaker box, satisfy the structure requirement of customer while satisfying the sound quality demand.

The utility model relates to a module well prefabricated waterproof cover plate which comprises a body, the body is in a disc shape, an eccentric through hole is formed in the body, and a cover edge protruding downwards is arranged on the edge of the body. An annular first groove is formed in the periphery of the through hole; the first groove is concentric with the through hole; an annular second groove is formed in the inner side wall of the cover edge; an annular third groove is formed in the bottom surface of the body; the third groove is concentric with the body, and the distance between the third groove and the inner wall of the cover edge is 7-8 cm; the first groove, the second groove and the third groove are each internally provided with a water-swelling water stop rubber strip. The utility model has the advantages of simple structure and convenience in use, not only can meet the structural requirements of the module well, but also can effectively eliminate the water leakage phenomenon, ensure the normal use of the module well, and fully meet the market requirements.

The invention relates to the technical field of tunnel engineering, and provides a construction method of a bealock section large-span multi-arch tunnel entry structure, which comprises the following steps: constructing a first pre-reinforcing pile assembly and a second pre-reinforcing pile assembly, excavating a temporary side slope to construct a middle pilot tunnel, excavating the middle pilot tunnel, and constructing a middle partition wall in the middle pilot tunnel after the middle pilot tunnel is communicated. And backfilling soil and stones to the bottom height of the protective arch, constructing the protective arch located above the left tunnel hole and the right tunnel hole, constructing an open cut tunnel section and an end wall type tunnel portal, backfilling soil at the top of the protective arch to the designed height, and then synchronously constructing the left tunnel hole and the right tunnel hole to the hidden tunnel section. According to the method, synchronous construction of the left main hole and the right main hole of the multi-arch tunnel can be achieved, the construction procedures of the multi-arch tunnel are greatly reduced, safety is high, meanwhile, the side slope is effectively reinforced, the side slope is prevented from collapsing in the excavation process, the design method of the protection arch is further provided, the determined protection arch can meet the structural requirement, and construction convenience can be improved.

The utility model discloses a diversion tunnel bottom plate lining structure which comprises a bottom plate layer constructed by concrete, a cushion layer constructed by rock ballast is tightly attached to the lower side of the bottom plate layer, closed ends with strip-shaped structures are arranged on the two sides of the bottom plate layer, a plurality of drainage holes are evenly formed in the bottom plate layer, and the drainage holes are communicated with drainage pipes. According to the diversion tunnel bottom plate lining structure, in-situ backfilling utilization of rock ballast in the tunnel is achieved; according to the lining structure, excavated rock ballast serves as a cushion material of bottom plate concrete, the excavated rock ballast and the bottom plate concrete are poured into an integrated scum concrete structure, and after pouring is completed, the concrete and the rock ballast on the lower portion are integrated, so that the structural requirement of tunnel bottom plate lining is met, and rock ballast materials excavated in a tunnel can be digested on site.

The utility model discloses a novel Z type purlin section reinforcing device, including main beam, Z type purlin, reinforcing part and fastener, Z type purlin is fixed on the main beam, and reinforcing part is detachably connected with connecting piece through fastener, and reinforcing part has the structure that matches with the section of Z type purlin, is used for being combined with Z type purlin and forms reinforcing. It is suitable for improving the bearing capacity and overall stability of Z type purlin structure, satisfies the demand of purlin enhancement in building roof reconstruction and new project. The device is simple in design, strong in adaptability, can reduce material use, optimizes construction process, significantly improves construction efficiency and economic benefits, and provides an efficient, economical reinforcing solution for steel structure building.

The application belongs to the technical field of form-finding of tensegrity structures, and particularly relates to a form-finding method for tensegrity structures based on a dynamic programming method. For any tensegrity structure, the dynamic programming method is used to determine the connection method of all rod members in the configuration, the balance matrix theory analysis and the geometric stability determination are comprehensively used, and the configuration meeting the requirements of the tensegrity structure is obtained. The main steps are as follows: firstly, the configuration is determined, the number of nodes is determined, and the node coordinates are input; the connection method of the cable is determined; the set of optional rod members of the configuration is determined; the dynamic programming table is established, and the boundary conditions are filled; the problem is solved step by step according to the recursive formula, and whether it is a tensegrity is determined according to the constraint conditions such as the balance matrix theory analysis and the geometric stability determination; and finally, the mode of all feasible rod member combinations of the determined configuration is output.

This utility model belongs to the field of gas turbine technology, and specifically relates to an air intake device for an aero-derivative gas turbine compressor. The air intake device includes an intake casing, characterized in that: a shroud is fixed inside the intake casing, an inlet rectifier cone is fixed outside the intake casing, a cleaning pipeline is installed on the inlet rectifier cone, and a hydraulic motor drive and lubrication assembly is installed in the inner ring of the intake casing. The hydraulic motor drive and lubrication assembly is enclosed within the shroud, and its pipeline is connected to the hydraulic motor drive and lubrication assembly pipeline. The beneficial effects of this utility model are: it achieves gas turbine intake rectification, avoids leakage of parts affecting intake efficiency, and reduces intake resistance. By accelerating and uniformly introducing external air into the compressor first stage through a tapered channel, it reduces airflow separation, ensures that air enters the compressor flow path smoothly along the axial direction, and avoids compressor efficiency reduction or surge due to uneven flow velocity.

The utility model discloses a coupling heat pipe type low-temperature mechanical refrigerator which comprises a compressor, an expansion machine, a connecting pipe and a heat pipe system, and the compressor comprises a shell heat exchanger; the expansion machine comprises a hot end heat exchanger; the connecting pipe is arranged between the compressor and the expansion machine and connects the compressor with the expansion machine; a part of the heat pipe system is arranged between the shell heat exchanger and the hot end heat exchanger, a part of the heat pipe system is arranged in the shell heat exchanger, and a part of the heat pipe system is arranged in the hot end heat exchanger. According to the technical scheme, the heat pipe is coupled with the refrigerator shell, heat dissipation of a traditional refrigerator only depending on the hot end of an expansion machine which is small in heat exchange area and large in heat dissipation capacity is converted into heat dissipation of the surface of the compressor shell and the surface of the hot end of the expansion machine together, and the heat exchange area is effectively increased; the problems that small and medium-sized low-temperature mechanical refrigerators are small in heat exchange area, high in heat exchange temperature difference, high in hot end temperature, small in heat exchange amount and the like are solved.