10results about How to "Reduce structural stress" patented technology

The application discloses a wet oxidation catalyst, which comprises the following raw materials in percentage by weight: 0.1-2% noble metal, 1-10% graphene-based material, and the rest is a carrier, wherein the carrier is modified titanium dioxide, specifically, a rare earth-transition metal-oxygen vacancy-mesoporous three-dimensional gradient titanium dioxide carrier. The application aims at solving the technical problem of poor stability of the catalyst.

The utility model discloses a river-crossing pipeline structure which comprises a foundation, two buttresses are poured on the foundation, the two buttresses are arranged on two banks of a river channel, and a pipeline main body structure is fixedly connected between the two buttresses. According to the river-crossing pipeline structure, the rigidity and the stability of the river-crossing pipeline are improved, the application range of the river-crossing pipeline is expanded, the overall sectional area of the structure is increased by utilizing the strength of the river-crossing steel pipe and adding the reinforced profile steel at the bottom, the structural stress in the middle of a large bending moment is reduced, and therefore when the span is large, the rigidity and the stability of the river-crossing pipeline are improved. Structures such as pipe bridges and trusses can be prevented from being used, the steel pipe can still be used for directly crossing the river channel, the application range of the river-crossing pipe bridge is widened, and remarkable economic benefits are achieved.

The utility model provides a kind of rhythmic vibration machine, it is related to fitness equipment technical field, including base, lower support, upper support and pedal, lower support is fixed with base, upper support is fixed with pedal, and lower support is equipped with rhythmic module, including drive motor, pivot and the cam connected with pivot by eccentric bearing, drive motor drives pivot by transmission mechanism, drives cam to make upper support rhythmic up and down;Meanwhile, vibration module is equipped on the side of upper support away from drive motor, for generating high-frequency vibration. By efficiently integrating rhythmic and vibration function in one, compact structure, and the stability of both simultaneous operation is improved by effectively avoiding motion interference with the layout of the two, so that users can simultaneously obtain the dual effect of full-body rhythmic exercise and local muscle deep relaxation.

The application relates to the technical field of communication equipment installation, and provides a device fixing support and communication equipment, wherein the device fixing support comprises a main fastener, an adapter and a fastener, the main fastener is suitable for being connected with a fixed object, one side of the main fastener is formed with a protruding part along a first direction; the adapter is suitable for being connected with a communication device, one side of the adapter is formed with a recessed part matched with the protruding part; one of the side surfaces of the protruding part and the side surface of the recessed part is provided with a groove, and the other is provided with a boss matched with the groove; the groove is provided with a first penetrating hole, and the boss is provided with a second penetrating hole; and the fastener is penetrated in the first penetrating hole and the second penetrating hole to fix the main fastener and the adapter. The protruding part of the main fastener is tightly matched with the recessed part of the adapter, the connection rigidity is enhanced, the structural stress of the connection position is reduced, the boss and the groove provided on the side matching surface of the main fastener and the adapter are limited and matched, the fastener is matched with the main fastener and the adapter, and the installation is convenient.

The invention relates to the cross technical field of sodium-ion batteries and glass preparation, in particular to a sodium-ion battery negative electrode material and a preparation method thereof, and the sodium-ion battery negative electrode material comprises a current collector and a composite active coating attached to the current collector; the composite active coating is formed by coating and drying slurry, and the slurry comprises a glass material, a conductive material and a binder. According to the invention, the glass material is introduced into the composite active coating, so that the structural stress in the sodion deintercalation process is effectively buffered, and the phase change and structural collapse of the electrode material are inhibited, thereby remarkably improving the cycling stability; meanwhile, the ion diffusion rate and the electron conduction efficiency are enhanced and the rate capability and the capacity performance are improved by a three-dimensional conductive network formed by the glass material, the conductive material and the binder in a synergistic manner, the overall preparation process is simple, the cost is relatively low, and a feasible material solution is provided for high-performance application of the sodium-ion battery in the field of large-scale energy storage.

The present application belongs to the technical field of planetary gear transmission mechanism parts, and particularly relates to a planetary gear carrier, which comprises a front planetary carrier body and a rear planetary carrier body arranged in two parts, and a connecting column is arranged on the front planetary carrier body, the coaxial bidirectional transmission structure effectively increases the meshing length and the bearing area, the load is uniformly distributed, and the transmission stiffness and stability are significantly improved; the radial inner and outer double-side island-shaped reinforcing structure is adopted on the two sides of the groove in the circumferential direction, the stress concentration area is precisely reinforced, and the connection strength and the fatigue resistance of the brazing position are greatly improved; the through dynamic balance hole group realizes overall double-face dynamic balance, overcomes the technical prejudice in the industry that low speed does not need dynamic balance, and obviously reduces the vibration, noise and gear impact; the flow guide structure and the labyrinth type fitting structure improve the flow and filling effect of the brazing filler metal, and improve the uniformity and reliability of the weld; the heat dissipation gap improves the heat dissipation capacity, reduces the structural stress under high temperature working conditions, and prolongs the overall service life.

This invention provides a hydrothermal-synthesized, long-term, anti-degradation, low-density cementing material for ultra-high temperature environments and its preparation method. This cementing material incorporates calcium oxide, silicon oxide, and various calcium aluminates into its formulation. The hydration reaction of these raw materials at high temperatures generates a substance with a certain strength. Simultaneously, under high-temperature conditions, the three types of calcium aluminates in a specific ratio can react with calcium oxide and silicon oxide to form hydrated calcium aluminosilicate (C-A-S-H), which exhibits long-term high-temperature resistance, thus ensuring the long-term high-temperature performance of the cementing material. Through this method, a cementing material that does not experience strength degradation under long-term high-temperature conditions (90 days of curing at 240℃) is obtained, effectively solving the problem of strength degradation at high temperatures in existing cement slurries used in deep wells.

The invention discloses a high-nickel ternary positive electrode material and a preparation method and application thereof, and belongs to the technical field of batteries and battery materials, a coating layer is formed on the surface of the high-nickel ternary positive electrode material through silicon dioxide, direct contact between an electrode material and an electrolyte is effectively isolated, and then through a thiol-ene click reaction, the high-nickel ternary positive electrode material is obtained. The graphene / titanium dioxide core-shell whisker is used as a reinforcing phase to coat the surface of the silicon dioxide coating layer again, so that the interface bonding force between the two coating layers is increased, the volume change caused by lithium ion intercalation and deintercalation can be coped, the structural stability of the material is kept, and the specific discharge capacity, the capacity retention rate and the cycling stability are favorably improved; according to the graphene / titanium dioxide core-shell whisker, titanium dioxide containing whiskers is synthesized on the surface of graphene containing a lamellar structure through microwave heating and serves as a core layer, then a shell-structure lanthanum metal framework is synthesized in a hydro-thermal mode, and the interface bonding force can be further improved through the mechanical interlocking effect.

This utility model relates to the field of monitoring equipment, specifically disclosing an online monitoring and maintenance device. It includes a mounting base, a protective cover, a support plate, snap-fit ​​blocks, and a monitoring body. The monitoring body is rotatably mounted on the lower end of the mounting base via a rotating shaft and bearing, allowing for pitch rotation. The protective cover covers the monitoring body and is detachably connected to the mounting base via a snap-fit ​​structure. The protective cover has snap-fit ​​parts with snap-fit ​​grooves on both sides. Support plates are symmetrically arranged on both sides of the lower end of the mounting base. The snap-fit ​​blocks are slidably mounted on the mounting base's slide rails and snap-fit ​​into the snap-fit ​​grooves. The support plate has a snap-fit ​​mechanism for driving the snap-fit ​​blocks, and the mounting base has a linkage mechanism for driving the snap-fit ​​blocks. The snap-fit ​​mechanism includes a push plate, a sliding rod, and a pre-compressed elastic element. The linkage mechanism includes a rotating disk, a connecting rod, and a push rod, which can synchronously drive two snap-fit ​​blocks. This device is easy to assemble and disassemble, reliably connected, precisely adjustable, and offers excellent protection, making it suitable for complex environments.

The utility model discloses a vibration arch breaking device for a port hopper. The vibrating device comprises a vibrating plate tightly attached to the inner wall of a hopper and a vibrating pump fixed to the outer wall of the hopper, the upper portion of the vibrating plate is limited through an arranged limiting groove, a through hole is formed in the middle of the vibrating plate, and the vibrating pump penetrates through the through hole, is connected with the vibrating plate and is fixed to the hopper. The device has the advantages that the vibration plate is driven by the vibration pump to generate mechanical vibration or impact force, vibration energy is effectively transmitted to a blocked area in cooperation with the damping cap arranged at the hopper opening, an arch structure formed by static friction between materials is overcome, and rapid arch breaking is achieved.