33results about How to "Expand freely" patented technology

An elastic core bar for a bent pipe comprises a core shaft used for supporting a straight pipe section and a plurality of core balls used for supporting a bent pipe section. The core shaft and the core balls are connected through an elastic body. The fixed end of the elastic body is fixed into the core shaft. The free end of the elastic body penetrates through the core balls in sequence, and a clamping positioning block limiting the displacement of the core balls is arranged at the end of the free end. The distance between two end faces of the core balls is defined as the thickness of the core balls. The thicknesses of the core balls are not consistent. The characteristics of a squillid body structure are used for reference, the spherical core balls are designed and connected through the elastic body, the wall of a pipe fitting can be more stably supported when small bent radius bending forming is carried out on the thin-wall pipe fitting, the friction force with the pipe fitting is smaller, and the quality of the bent pipe fitting is better.

The invention discloses a device for a control surface unfolding wind tunnel test of a free flight model, which comprises a flexible head, a flexible body, a folding rudder and an unfolding mechanism, wherein the unfolding mechanism comprises a push rod which is equipped with a round boss on the rear section, a front nut, a rear nut, a big spring and a small spring, a front end blind hole, a rear end blind hole and a middle through hole communicated with the two blind holes are disposed inside the flexible body, an installation groove used to install the folding rudder and a spindle installation hole are disposed in an flexible body wall of the rear end blind hole, the push rod passes through the middle through hole, the big spring is sleeved into the push rod from the front end and installed in the front end blind hole and then limited by the front nut and the bottom wall of the front blind hole, the small spring is sleeved into the push rod from the rear end and fixed on the round boss, a rudder plate of the folding rudder is installed in the installation groove by a spindle, the rear nut is connected on the push rod by threads on the rear side of the folding rudder, a chamfer is disposed on the front end of the rear nut, the top end of the chamber is contacted with a coordination face on the rear end of the folding rudder when the folding rubber is folded, and the flexible head is installed on the front end of the flexible body after installation of the unfolding mechanism. The device is simple in processing and convenient in installation.

The invention discloses a power line carrier communication LED light source intelligent drive device, which mainly comprises a power supply conversion component, a lamp bank control drive component, a mcu central control component and a power line carrier communication component. The power supply conversion component is connected with a mains alternating current through a power line. The lamp bank control drive component mainly comprises a row controller, a temperature sensor and a column controller. The row controller is connected with the mcu central control component through a second serial port, and receives the address and switch information from the mcu central control component. The column controller is connected with the mcu central control component through a third serial port for realizing the serial port multi-computer communication. The mcu central control component is connected with the power line carrier communication component through a first serial port. A fourth serial port of the mcu central control component is connected with the power supply conversion component. The power line carrier communication module is connected with the power line through a power line coupling module.

Using the filter auxiliary agent separated by backwashing from a filter element repeatedly and effectively, the consumption amount of a filter auxiliary agent and the generation of industrial waste can be suppressed. In a filter auxiliary agent pre-coat circuit, a filter auxiliary agent in a pre-coat tank is attached and stacked on a filter element in a filter case, and a filter auxiliary agent layer is formed. In a filter circuit, the filter auxiliary agent layer of the filter element removes sludge in the filter treatment liquid in a main tank. A backwashing circuit breaks down the filter auxiliary agent layer and a sludge layer, separates the filter auxiliary agent layer and the sludge layer by backwashing from the filter element, and circulates to the pre-coat tank. After repeating these steps a plurality of times, the filter auxiliary agent and sludge separated by backwashing are taken out to the exterior.

The invention discloses a photovoltaic shading screen. A plurality of parallel-connected photovoltaic screens which can be stretched and folded are connected between an upper slide rail and a lower slide rail. Upper and lower ends of each photovoltaic plate are provided with parallelogram link mechanisms which are mutually and successively connected through connection plates. Two short rods on the same connection plate are connected through one pair of engaged gears. The connection plate located on an outer side drives one pair of reduction gears through one rotation shaft. In all the parallelogram link mechanisms, the connection plates arranged at intervals are provided with slide blocks respectively. The upper slide rail and the lower slide rail, which are located at one output side of the reduction gears, carry out abutting joint with rotatable slide rails. The slide block located at a lower end of the photovoltaic screen in each parallelogram link mechanism, the lower slide rail and the rotatable slide rail which carries out abutting joint with the lower slide rail are cooperated. The other end of the rotatable slide rail which carries out abutting joint with the lower slide rail is connected to an output shaft of a second servo motor. The shading screen of the invention can be used for a glass light transmission space of a building and an application space of photovoltaic power generation is widened.

The invention discloses a hinge and an enclosure structure. The hinge is used for connecting building boards and includes a mounting part, a left mounting box and a right mounting box which are arranged in sequence from left to right; the left mounting box is fixedly connected with the mounting part, the left mounting box and the right mounting box are detachably connected, a left cavity and a right cavity are formed in the left mounting box and the right mounting box respectively and are communicated with each other, and the hinge further includes a connection belt, the two ends of the connection belt are arranged inside the left cavity and the right cavity respectively and are connected with the left mounting box and the right mounting box respectively. The left mounting box and the right mounting box are flexibly connected through the connection belt, and two externally arranged plates can be folded together, so that transportation is convenient; different from the prior art, a connection part in a connection structure is not separated from the plates, the situation is avoided that the connection part is omitted when a factory delivers goods, and the workload is small during mounting; the enclosure structure is convenient to fold, freely spread and easy to fix.

The invention discloses an amino acid water-soluble fertilizer with mite-killing and efficiency-improving effects. The fertilizer comprises amino acid, microelements, an organosilicon additive, and water. The invention further provides a preparation method of the amino acid water-soluble fertilizer, and an application method of the amino acid water-soluble fertilizer. The amino acid water-solublefertilizer contains comprehensive nutrients, can be easily absorbed by crops at different stages, and can effectively create favorable nutritional conditions for the crop growth; harmful mites on thecrops are prevented and controlled through a physical method, so that the usage amounts of pesticides and chemical fertilizers can be reduced, the ecological environment can be effectively improved, and soil and water sources can be protected; and the preparation method is simple, raw materials can be acquired from a wide range of sources, the cost is low, no pollution is caused, the product fertilizer efficiency is high, and scale production is facilitated, so that good application prospects are achieved.

The invention discloses a U-shaped liquid-absorbent diaper, which includes a U-shaped composite core and a three-dimensional shield. The composite core is wrapped by a cladding layer arranged on the outside. It is composed of composite surface material, a first U-shaped flow guide layer is arranged on the upper part of the composite core body, and a second U-shaped flow guide layer is arranged on the lower part of the composite core body. The beneficial effect of the present invention is: the diaper is provided with a U-shaped composite core and a composite surface layer material with a bulge, so that the composite core can fully absorb the urine infiltrated from around the wrapping layer through the flow guide layer, so that the urine can be fully absorbed. The composite core of urine expands freely, which speeds up the drying of the surface of the covering layer and reduces the binding of the baby's skin. At the same time, the gap between the bulges is conducive to the diversion and rapid infiltration of urine, and helps to breathe , so that the inside of the diaper is dry and not stuffy, and the raised part is soft and comfortable in contact with the skin of the baby's buttocks, avoiding skin discomfort of the baby's buttocks.

The invention discloses a portable multi-flavor cigarette packing box, and particularly relates to a portable multi-flavor cigarette packing box which is convenient to carry, capable of storing cigarettes in various flavors and convenient for taking the cigarette. The portable multi-flavor cigarette packing box comprises at least two box bodies and a box cover; a piece of framework paper and a piece of lining paper are arranged in each box body; the long side edge of a largest surface of each box body is sequentially folded to form a multi-fold structure, and the box cover is connected to one box body fold type on the edge side; when each box body is folded, all box bodies are covered and fixed by the box cover. The portable multi-flavor cigarette packing box is compact in structure, small in size and convenient to carry, box and transport. While the convenience in carrying is guaranteed, each box body can be flexibly unfolded, the cigarette can be maximally convenient to take by a consumer, and the difficulty such as inconvenience for simultaneously carrying multiple cigarette packing boxes in different flavors when in trip and inconvenience for taking the cigarette caused by multiple cigarette bags can be effectively solved.

The invention belongs to the technical field of energy-saving and environment-friendly equipment and provides a lifting type solar electric heating furnace. The lifting type electric heating furnace comprises a solar cell panel, an electric heating film plate and a control panel. A solar cell panel containing groove is formed in the upper left portion of the lifting type solar electric heating furnace. A sliding groove is formed in the middle portion of the solar cell panel containing groove. A sliding rod is arranged in the sliding groove. The electric heating film plate is arranged at the middle position of the right half portion of the electric heating furnace. A spring device is arranged below the electric heating film plate. The bottom of kitchenware and the electric heating furnace can coincide and make contact completely. The control panel is arranged in the lower right portion of the electric heating furnace. The solar cell panel is connected with the sliding rod through a rotating device. The solar cell panel can rotate by 360 degrees at will through the rotating device. By the adoption of the lifting type solar electric heating furnace, the lifting device and the electric kitchenware are combined, the kitchenware can completely coincide with the electric heating furnace in the heating process of the electric heating furnace, the requirements of people for cooking under different voltage conditions can be met, carrying is convenient, and people can enjoy the outdoor playing fun as much as possible.

The invention discloses a combined wooden door capable of being dismounted and mounted. The problems that in the prior art, a wooden door is prone to being deformed and warped in the dismounting and mounting process, the paint faces of transverse wood and door edges are cracked, the paint faces of vertical square columns and the transverse wood are cracked, and the paint faces of a core plate and four frames are cracked are solved. The combined wooden door comprises a core plate, door edges, transverse wood and vertical square columns, the core plate is arranged in the middle, the door edges are arranged on the two sides of the core plate, the transverse wood is arranged at the two ends of the core plate, the door edges, the transverse wood, the vertical square columns and the core plate are formed by fastening concave-convex grooves and dowels with hammer screws, natural clearances are reserved when the materials are connected, the core plate, the door edges, the transverse wood and the vertical square columns are respectively sprayed with paint, the materials have certain space to expand and contract, and plates are prevented from being cracked or deformed and the like.

The invention discloses a novel electric push rod type wing carrier vehicle. The vehicle is characterized in that a wing carriage body is mounted on the upper plane of a frame chassis; a front carriage plate is arranged at the front side of the wing carriage body; first electric push rods are respectively arranged between the two sides of a back door plate and edge frames at the two sides of the wing carriage body; one sides of an L-shaped left side carriage plate and an L-shaped right side carriage plate are connected with a middle upper cross beam through hinges; and second electric push rods are respectively connected between the two sides of the L-shaped left side carriage plate and the L-shaped right side carriage plate and an upper edge frame of the top of the wing carriage body. The L-shaped left side carriage plate, the L-shaped right side carriage plate and the back door plate are opened and lifted smoothly and are stretched and retracted freely, so that the manual opening and closing troubles are reduced. The vehicle is specifically suitable for serving as an urban goods express vehicle, a product publicity vehicle, a breakfast vehicle, a mobile sale vehicle and the like.

The invention discloses a hospital bed with a bed plate for a family member. The hospital bed comprises a shell, wherein side rails are arranged on the shell; bed rails are symmetrically arranged at two sides of the shell; first bed legs are symmetrically arranged at two sides of the lower end of the shell; a bed plate cabin is arranged at the lower side of the shell; the bed plate is arranged inthe bed plate cabin; roller grooves are symmetrically arranged in the bed plate cabin; four groups of wheel carrier sheets are symmetrically arranged at the lower end of the bed plate; wheel axles arearranged between the wheel carrier sheets; a roller is arranged on each wheel axle and is connected with the corresponding roller groove; a push-pull handle is arranged on the bed plate; fixing grooves are symmetrically arranged in the bed plate; cover shaft holes are symmetrically formed in two sides of one end, close to the push-pull handle, of each fixing groove; a cover shaft is arranged between two cover shaft holes; a groove cover is arranged on each cover shaft; fixing blocks are symmetrically arranged on each first bed leg; and a rotating shaft is arranged on each fixing block. The hospital bed has the beneficial effects of being simple to operate, convenient to use, small in occupied space and free in collapse and expansion, and greatly facilitates rest of the family member.

The invention discloses a mains supply and solar energy complementary power-assisted walking draw-bar box, which is composed of a box body, a plurality of flexible solar power generation panels, a mains supply and solar energy complementary controller, a rechargeable battery pack, an inverter and a walking driving device. A traveler only needs to hold the draw bar to guide the traveling directionof the draw-bar box without forcibly dragging the draw-bar box, so that fatigue of people caused by dragging the draw-bar box is avoided, and sufficient physical strength and vigorous energy of peoplein the traveling process are ensured; in commercial power and solar energy complementary power-assisted walking, long-distance outdoor walking or long-time outdoor activities, the flexible solar power generation panel charges the rechargeable battery pack, so that energy conservation and environmental protection are achieved, and the situation that the box loses power due to low electric energy of rechargeable battery pack can be effectively avoided; the motor drives the continuous walking driving mechanism and the intermittent motion walking supporting mechanism at the same time, the two mechanisms are simple and compact in composition and convenient to manufacture and install, the attractive appearance of the draw-bar box is not affected, the supporting rod is unfolded and folded freely, and convenience and practicability are achieved.