15results about How to "Structural stability" patented technology

The utility model relates to the field of tray feeding and discharging, especially to a tray supply conveying system, which comprises an automatic stacker, a chain conveyor, a light-load tray moving machine, a stacking position cylinder line, a buffer cylinder line I and a buffer cylinder line II. The automatic stacker is used for storing tray stacks and feeding the tray from the bottom to the chain conveyor. The chain conveyor is used for conveying the tray to the light-load tray moving machine. The light-load tray moving machine is used for receiving the tray conveyed by the chain conveyor, lifting the tray to the level of the stacking position cylinder line and conveying the tray to the stacking position cylinder line. The stacking position cylinder line detects whether there is a tray above and whether the tray is full of goods, and conveys the tray to the buffer cylinder line I after the tray is full of goods. The utility model can ensure the stable upward taking out of the tray, realize the uninterrupted conveying of the tray during the operation process, improve the work efficiency, realize the integration of the automatic production line and improve the automatic production level.

The invention discloses a ±45° metal cross dipole dual-polarized antenna with a reflection cavity, comprising a dustproof component, a reflection component, an antenna vibrator component, a feeding component and a support plate component. The invention has the beneficial effects of using a metal symmetrical vibrator, the radiation surface of the vibrator is composed of two pairs of butterfly arms vertically crossed at ±45°, the butterfly arms and the connecting column are provided with column holes, the feeding column is arranged in the column hole, the upper end of the feeding column is connected to the T-shaped feeding metal sheet, the lower end of the feeding column is connected to the SMA connector, so that the electrical signal is fed into the conductor from the center of the antenna, and the square flange is connected to the bottom plate, mainly to increase the contact area and improve the stability of the radiation structure, so that the dual-polarized antenna can achieve a 44.7% -10dB impedance bandwidth, and its -15dB impedance bandwidth reaches 31.5%. The device has a simple structure, a wide bandwidth, a stable structure, a high polarization purity, and good radiation characteristics, and has good application prospects, especially in base station systems.

The invention discloses a seedling feeding mechanism for a rice transplanter, and relates to the technical field of agricultural machinery, the seedling feeding mechanism comprises a seedling transplanting table, a seedling supplementing table is fixedly connected to the rear end of the seedling transplanting table, supporting side plates are fixedly arranged on the two sides of the seedling supplementing table, and a supporting bottom plate is fixedly arranged at the lower end of the side, away from the seedling transplanting table, of each supporting side plate; the seedling supplementing device has the advantages that the supporting side plates and the supporting bottom plate on the two sides of the seedling supplementing table form a stable structure to provide a reliable foundation for the seedling supplementing assembly, a hydraulic pump in the seedling supplementing assembly drives a telescopic part, a fixing frame can be controlled to ascend and descend, the height of a seedling containing plate is adjusted, and the seedling containing plate inclines by 45 degrees and slides downwards through gravity to facilitate seedling taking; the movable limiting plate on one side of the seedling placing plate plays an important role, when the seedling placing plate is lower than the seedling supplementing table, the movable limiting plate effectively prevents seedlings from slipping off, and when the seedling placing plate is higher than the seedling supplementing table, the movable limiting plate automatically changes the angle to enable the seedlings to slip off to the seedling supplementing table, seamless connection of the seedlings from storage to the seedling supplementing position is achieved, and manual carrying and adjusting links are reduced.

The invention discloses a soil conservation device applied to an agricultural photoelectric station and a conservation method, and relates to the technical field of water and soil conservation. The soil conservation device comprises a water collection mechanism and a buffer unit, and the detachable water collection mechanism is arranged at the lower end of a photovoltaic panel and the buffer unit is arranged on the soil surface; rainwater originally dripping along the lower edge of the photovoltaic panel in a concentrated mode can be effectively collected and dispersed, scouring and erosion to soil are remarkably reduced, and the surface structure of cultivated land is protected. According to the device, part of rainwater is guided into the soil below the photovoltaic panel through the recharge channel, the problem of drought under the panel caused by shielding is relieved, and the uniformity of soil moisture distribution is improved. The device is simple in structure and convenient to install and maintain, and the agricultural photoelectric station does not need to be transformed. The conservation method comprises the steps of parameter setting, installation and operation, external energy is not needed, maintenance is easy and convenient, the soil structure is effectively conserved, the cultivated land quality is improved, and meanwhile engineering feasibility and economical efficiency are achieved.

The utility model discloses a right-angle ring core protractor which comprises a fixed ruler body, a ring core is arranged at the axis of the fixed ruler body, the end portion of a rotating ruler body is movably connected with the ring core, the end portion of a horizontal ruler body is fixedly connected with the fixed ruler body, and the opposite ends of the horizontal ruler body and the rotating ruler body are respectively provided with a 45-degree oblique angle. The upper surface of the fixed ruler body is provided with a circular angle scale of 3-15 degrees, and the long sides of the horizontal ruler body and the rotary ruler body are provided with linear scales, so that an angle is drawn while measurement is carried out, the texture surface is in contact and friction with the fixed ruler body only by sliding the L-shaped sliding block, the rotation of the rotary ruler body is more stable and accurate, and the accuracy of measurement and drawing is improved.

The invention relates to an aerogel composite material impregnation aging device and an aerogel composite material impregnation aging system, and belongs to the technical field of aerogel preparation. The gum dipping and aging device comprises a gum dipping and aging outer cylinder and a gum dipping and aging mold arranged in the gum dipping and aging outer cylinder, and an aerogel base material to be soaked and aged is placed in the gum dipping and aging mold; a circle of supporting table is annularly arranged on the inner wall of the gum dipping and aging outer cylinder, and the gum dipping and aging mold is arranged on the supporting table; the gum dipping aging mold is divided into a first gum dipping area and a second gum dipping area, a plurality of parallel porous partition plates are vertically arranged in the first gum dipping area and the second gum dipping area, and the porous partition plates in the first gum dipping area are perpendicular to the porous partition plates in the second gum dipping area; the aerogel base material is arranged between the adjacent porous partition plates in the first impregnation area or the second impregnation area. Compared with the prior art, the method does not need to depend on meshes, obvious wrinkles on the surface of the base material can be effectively avoided, and the mold space can be utilized to the maximum degree so as to reduce space waste.

The present invention relates to the field of intelligent tunnel management and control, and in particular to technical fields such as tunnel event detection, linkage control, and emergency response plans, and discloses a tunnel event management and control platform, including an intelligent control module, an intelligent perception module, an intelligent interconnection module, and an inspection and maintenance APP. The platform is provided with a dual-active information synchronization and coordination framework through the intelligent control module, and the dual-active information synchronization and coordination framework includes an L0 controller, an L2 edge computing device, and a variety of tunnel devices. The L0 controller and the L2 edge computing device perform data synchronization and coordination through a soft bus, which ensures safe operation in the tunnel, reduces the system construction and maintenance costs, has low network construction costs, can perceive abnormal events in tunnel traffic with high precision, has a fast response speed for comprehensive monitoring perception, and the inspection and maintenance APP synchronously obtains the operation and maintenance information inside the tunnel, and has a flexible backup system architecture and stable communication quality.

The utility model provides an edge band multichannel storage device which comprises a supporting frame, a plurality of rotating edge band rolls are detachably connected to the supporting frame, each edge band roll is provided with an edge band disc, each edge band disc is connected with a limiting rotating piece, a limiting part is arranged on the supporting frame, and the limiting rotating piece is connected with the limiting rotating piece. According to the edge sealing device, the limiting rotating piece is connected with the edge sealing strip coil, and it is guaranteed that the edge sealing strip is not blocked when the edge sealing strip is conveyed on an edge sealing machine; the edge sealing belt is very convenient to replace, and a positioning effect can be achieved; tedious drawing actions in the market are reduced, and the production efficiency is improved.

The present invention belongs to the field of catalytic technology, and specifically relates to a slurry bed methane synthesis catalyst and a preparation method and application thereof. The slurry bed methane synthesis catalyst of the present invention comprises a modified silica carrier and an active component supported on the modified silica carrier; wherein the specific surface area of ​​the modified silica carrier is 270-340 m 2 / g, average pore diameter of 60-130nm, pore volume of 0.6-1cm 3 / g. The slurry bed methane synthesis catalyst prepared by the present invention has high stability under gas-liquid-solid three-phase conditions, and the active component and the carrier have high binding degree and good structure-activity relationship. The preparation method of the slurry bed methane synthesis catalyst of the present invention is simple, has good reproducibility, and is easy to promote industrialization.

The invention relates to a silver-containing electroplating wastewater recovery device and a recovery method thereof, and belongs to the technical field of silver-containing electroplating wastewater recovery. The silver-containing electroplating wastewater recovery device comprises a filter box and a recovery box, the filter box is communicated with a wastewater input pipe, and the filter box is communicated with a drainage pipe; a filter screen group and an activated carbon screen group are sequentially arranged in the filter box along the wastewater inlet direction; a clamping groove and a bearing net plate matched with the clamping groove are arranged in the recycling box, and a plurality of evenly-distributed hole channels are formed in the bearing net plate. The bearing net plate is detachably connected with the recycling box; and the load-bearing net plate is loaded with adsorption filler. The recovery equipment disclosed by the invention has the characteristics of simple structure and good application stability, and can effectively adsorb silver ions by virtue of strong interaction generated when the silver-containing wastewater flows through the adsorption medium, so that the separation and recovery of metals are realized, the risk of secondary pollution is remarkably reduced, the treatment speed is increased, the treatment cost is reduced, and the economic benefit is increased. And the method has good applicability and high practicability.

The utility model discloses an adjustable one-time forming concrete stepping pouring mold. Comprising a telescopic device, a fixed side plate, a splicable side plate, an adjustable arched device and a splicable telescopic screw rod. According to the adjustable one-time forming concrete stepping pouring mold, sliding, stretching and retracting of the structure are achieved in the modes of telescopic screws, clamping grooves, sliding rails and the like, fixing is conducted through bayonets, plug pins and other devices, and on-site rapid assembling is achieved. The mold can adapt to casting forming of playground annular runway type concrete stepping stones with different lengths, widths, arch sizes and intervals, the construction procedure can be simplified and recycled, a series of tedious and complex procedures such as on-site manufacturing, assembling and supporting of constructors are reduced, and the working efficiency of the constructors is improved.

The invention belongs to the technical field of concrete, and particularly relates to a high-thixotropy cement-based material for wet pressing. The high-thixotropy cement-based material for wet pressing is prepared from the following raw materials: cement, aggregate, fly ash, silica fume and an additive. The cement-based material for wet pressing has unique performance, has no fluidity after being added with water and stirred, is in a plastic state, can be fed into the lower part of a press mold in a block shape, has excellent thixotropic performance, has excellent fluidity under the action of external force, and can quickly fill the mold and form any required shape. Meanwhile, in the pressing process, part of free water in the material can be extruded and discharged, so that a compact cement product capable of being directly demolded is formed, and the strength of the cement-based material cured to final strength is higher than that of a cement-based material prepared by a common pouring process.

The utility model relates to the technical field of watchbands, in particular to a watchband with a double-layer surface and a three-dimensional core, which comprises a watchband main body and clamping needles arranged on the watchband main body, the watchband main body is provided with a sponge layer and a sandwich screen cloth layer wrapping the sponge layer, the sandwich screen cloth layer is of a long-strip-shaped structure, and the clamping needles are arranged on the watchband main body. The sandwich screen cloth layer comprises a mesh surface layer, a canvas layer and a monofilament connecting layer for connecting the mesh surface layer and the canvas layer, the sandwich screen cloth layer is folded and sewed, the sponge layer is wrapped by the folded and sewed sandwich screen cloth layer, and the canvas layer is arranged to be in direct butt joint with the sponge layer; a shaft hole is formed in the folded line position of the sandwich screen cloth layer through sewing so as to be connected with a clamping needle; according to the watchband with the 3D pressing effect, the sponge layer serves as an inner layer, the sandwich screen cloth layer wraps the sponge layer, the three-dimensional structure of the double-layer surface and the three-dimensional core is utilized, and breathability and supporting strength are both considered.

The curtain wall expansion joint assembly comprises a left special-shaped frame, a right special-shaped frame and an opening sash, the left special-shaped frame is fixed to the left side of an expansion joint keel, the right special-shaped frame is fixed to the right side of the expansion joint keel, and the opening sash is movably connected with the left special-shaped frame through a hinge. And the opening sash is provided with a decorative panel. The curtain wall expansion joint assembly has the beneficial effects that the curtain wall expansion joint assembly is reasonable in structure, convenient to install and reliable in construction, a decoration panel made of the same material as an outer vertical face can be installed on a curtain wall expansion joint through the assembly, and a curtain wall is better in overall consistency and more attractive.