11results about How to "Eliminate connection gaps" patented technology

This invention discloses a high-stiffness unbonded collaborative loading system and its construction method, belonging to the field of structural engineering testing technology. The system comprises a side-coordinated steel beam positioned on opposite sides of the structure under test; a top-plate loading steel beam, arranged in a cross shape within the side-coordinated steel beam, with its ends connected to the side-coordinated steel beam; the top-plate loading steel beam is a double-layer unbonded sleeve assembly, including an inner square steel tube and an outer circular steel tube sleeved around it, with a preset gap between the inner square steel tube and the outer circular steel tube; and multiple horizontal prestressing tendons arranged around the outer circular steel tube, with their ends connected to the side-coordinated steel beam. This invention employs the aforementioned high-stiffness unbonded collaborative loading system and its construction method, separating the force transmission channel from the fixed interface through a tube-in-tube unbonded design, thus solving the problems of local buckling, deformation coupling, and poor side-coordinated performance in traditional loading schemes during ultra-large tonnage tests.

The invention relates to the technical field of rotary kilns, in particular to a rotary kiln for cement production, which comprises a base and a kiln body arranged on the base, and a kiln head and a kiln tail are respectively arranged at two ends of the kiln body; prefabricated assemblies are arranged in the kiln head and the kiln tail; the prefabricated assembly comprises heat insulation bottom plates laid on the inner wall of the kiln head and the inner wall of the kiln tail, the kiln head and the kiln tail are connected and assembled through the prefabricated parts such as the heat insulation bottom plates and the heat insulation top plates, and better heat preservation and fireproof effects are achieved in a double-layer heat insulation mode; the problems that the temperature is high, heat dissipation is fast, and energy consumption of products is large in the calcining process of existing castable are solved, the heat insulation bottom plate can be tightly attached and connected in the transverse direction and the longitudinal direction by means of a positioning structure and a fixing structure in the assembling process, and therefore the assembling convenience of prefabricated parts of the type is improved; and a connecting gap of the inner side heat insulation bottom plate can be eliminated, and the heat preservation performance and the durability are guaranteed.

The utility model discloses a kind of hot composite cover plates, including top cover and pole assembly, top cover surface is equipped with first through-hole, top cover has outer side and inner side;Pole assembly includes external pole and internal pole, external pole is attached and set in top cover outer side, external pole surface is equipped with second through-hole, and second through-hole and first through-hole are concentrically arranged;Internal pole has sheet portion and the internal pole of being set on the surface of sheet portion, sheet portion is attached to top cover inner side, internal pole passes through first through-hole and second through-hole and partially exposed outside, sheet portion and external pole jointly clamp top cover to prevent battery liquid leakage.The technical scheme of the present application aims to have high sealing property, effectively prevent electrolyte leakage.

An integrated sliding door pulley block comprises a base, an installation area is arranged on the base, a pulley plate is installed in the installation area, a guide wheel is rotationally installed on the pulley plate, and the outer circle of the guide wheel protrudes out of the lower end face of the pulley plate. The lower end face of the pulley plate extends downwards to form a trigger head, and the trigger head interacts with a buffer in the guide rail to play a role in buffering when the sliding door is closed. The beneficial effects of the utility model are that the trigger head directly extends downwards from the lower end face of the pulley plate and forms an integrated design with the pulley plate. Compared with the scheme that the trigger serves as an independent accessory and is fixed through additional parts such as a screw or a buckle in the prior art, independent installation of the trigger and related connecting pieces of the trigger are omitted. According to the integrated design, the number of parts of the pulley block is remarkably reduced, the production and assembly process is simplified, the production efficiency is improved, and meanwhile the manufacturing cost is reduced.

The invention provides a flexible solar wing substrate structure and a preparation process, and belongs to the technical field of spacecraft power supply subsystems. The flexible solar wing substrate structure comprises a polyimide film layer, a flexible circuit board and at least one flexible substrate reinforcing layer made of a fiber reinforced polymer matrix composite material. The components are integrally formed through co-curing, and the flexible circuit board is embedded in the polyimide base material and has the functions of flexibility and circuit communication; the edge of the substrate is pre-bent to form a flexible hinge with a round rod, so that the folding reliability is improved; and a co-cured fiber composite reinforcing sheet can be selectively arranged to enhance the structural strength. The structure is light in weight, thin in thickness and suitable for a large-interval cold and hot circulation space environment, the manufacturing process is remarkably simplified, the size and the mass are reduced, the folding service life of the spacecraft solar wing is prolonged, and the structural stability is enhanced.

The utility model relates to a paper-plastic buffering bottom support which comprises a profiling cavity, side plates are connected to the four edges of the profiling cavity, first recesses are formed in the side plates and form first protrusions on the other faces of the side plates, and the first protrusions abut against the outer wall of the profiling cavity after being bent through the side plates. The two opposite side plates are both connected with a bottom plate, the bottom plate is provided with a second concave part, the second concave part forms a second protrusion on the other face of the bottom plate, the second protrusion is bent through the bottom plate and then abuts against the bottom of the profiling cavity, the pressure resistance in the horizontal direction and the vertical direction is enhanced through the first protrusion and the second protrusion, external force is evenly dispersed, and the service life of the mold is prolonged. The overall strength and the buffering capacity are improved; a paper pulp integral forming process is adopted, buffering is provided through material flexibility, connecting gaps are eliminated, production is simplified, cost is reduced, structural stability is remarkably enhanced, and it is ensured that objects are reliably supported and protected in the transportation and storage process.

The utility model relates to vertical roll rolling mill technical field discloses a kind of vertical roll rolling mill centering calibration auxiliary device and calibration equipment, the vertical roll rolling mill centering calibration auxiliary device, installation is in the reference component on rolling mill rack, including fixed structure, it is detachably arranged on reference component;Positioning structure, it is arranged on the side of fixed structure away from reference component, extend towards the direction away from reference component, and form the first locating surface and the second locating surface of symmetrical arrangement, wherein, the distance from first locating surface to reference component center line and the distance from second locating surface to reference component center line are equal, and measuring component can be detected the distance of rolling mill two sides vertical roll to reference component center line by first locating surface and second locating surface respectively.The utility model is characterized in that, simple structure, easy to operate and can improve centering calibration efficiency and accuracy.

The utility model relates to the technical field of mother and baby products, in particular to a breast pumping assembly and a breast pump. The milk sucking assembly comprises a shell and a milk sucking part, the shell is provided with a shell inner cavity and a shell opening, the milk sucking assembly further comprises a contact part connected with the milk sucking part, the contact part is made of soft rubber, the milk sucking part and the contact part are integrally formed, the milk sucking part is further provided with a limiting end, and the limiting end is connected with the shell inner cavity. The limiting end is used for being connected with a shell so as to fix the relative position of the breast pumping part and the shell, and the contact part is connected with the shell in a sealed mode through the shell opening. According to the breast pump, through the breast pumping part and the contact part which are integrally formed, the connecting strength and the sealing performance are improved, the contact part is prevented from loosening or falling off, and the breast pumping stability and efficiency are ensured; in addition, due to the integrally-formed arrangement, connecting gaps are eliminated, the risks of milk residue and bacterium breeding are reduced, and therefore sanitation and safety are improved.

The application discloses a tension direct measurement device and method for electric power tensioning equipment, relates to the technical field of overhead transmission line construction equipment, and comprises a device main body, a brake frame is fixedly installed above the device main body, a bearing seat is fixedly installed on the side surface of the brake frame, a speed reducer is arranged on the side surface of the bearing seat, and a force plate is fixedly installed on the speed reducer. Advantages are that the application adopts a mechanical force transmission mode of floating type installation of a speed reducer matched with a force plate directly connected with a force gauge, realizes direct real-time measurement of the tension of a steel cable under the conditions of braking and operation, eliminates measurement interference through a matched compensation unit, guarantees measurement accuracy and stability, realizes lossless protection of core elements through an added mechanical overload protection unit, is high in reliability and easy to maintain, and the safety and operation efficiency of equipment operation are improved.

This application provides a snap fastener and a snap fastener, the snap fastener also including a spring cup. The snap fastener provided by this application includes a snap face, a snap-fit ​​part, and an operating part. The snap-fit ​​part is disposed on the end face of the snap face and is used to cooperate with the spring cup; the operating part is disposed on the snap face and has a first through hole for threading accessories. In the snap fastener provided by this utility model embodiment, in the assembled state, the snap-fit ​​part and the spring cup are tightly fitted to ensure the stability of the connection, while the first through hole on the operating part facilitates the threading of various accessories, which can be ropes or pull rings. The cooperation between the accessories and the operating part allows the user to quickly and conveniently fasten or unfasten the snap fastener even in confined spaces or when one-handed operation is required, thereby improving the operational convenience of the snap fastener.

The utility model relates to the technical field of steel structures, in particular to a circular tube steel column structure which comprises an upper circular tube steel column and a lower circular tube steel column which are vertically and coaxially arranged, the opposite end faces of the upper circular tube steel column and the lower circular tube steel column are arranged at intervals, and restraining assemblies are installed on the peripheries of the adjacent ends of the upper circular tube steel column and the lower circular tube steel column. The upper end of the restraining assembly is fixedly connected to the outer side wall of the lower end of the upper circular pipe steel column in a sleeving mode, a double-end locking part is arranged in the restraining assembly, and an anti-dislocation reinforcing layer used for reinforcing the double-end locking part is arranged in the inner space of the restraining assembly. Through the design of the restraining assembly, the double-end locking piece and the anti-dislocation reinforcing layer, high-strength connection between the upper circular pipe steel column and the lower circular pipe steel column is achieved, the pulling resistance and shearing resistance of the connecting part are greatly improved, and the overall stability and reliability of the steel structure are effectively enhanced.