30results about How to "Reduce void area" patented technology

The invention provides soldering paste and a preparing method thereof and relates to the technical field of soldering materials. The soldering paste is prepared from 90.2-91.8 parts of lead-free metalalloy powder and 8.2-9.8 parts of soldering-aid paste; wherein the soldering-aid paste is prepared from 37-45 parts of a film forming agent, 30-38 parts of a solvent, 10-18 parts of an activating agent, 4-5.5 parts of a thixotropic agent, 1-2.5 parts of a surfactant, 0.4-0.8 part of an antioxidant and 0.3-0.6 part of a corrosion inhibitor; and the activating agent is prepared from organic acid and a bromine-containing compound. The soldering paste can be applied to soldering of electrode terminals of fuses. Continuous production can be achieved through reflow soldering, and the production efficiency can be greatly improved; and meanwhile, copper caps and copper handles are tightly connected after soldering, soldering tin on the peripheral edges is smooth, full and free of sand holes, thehole area is small, and the electrical conductivity and the connection strength are greatly improved.

The invention relates to an easy-washing and quick-drying garment provided with a waist-tightening elastic material. The garment comprises a garment body (1) which is made of pure cotton and provided with a V-shaped collar (2), wherein a lower hem (3) is arranged at the bottom of the garment body (1) and adopts an elastic band knitted at the bottom of the garment body (1); a lining layer (4) is woven on the back of the garment body (1) and made of cashmere wool; two pieces of elastic fabric (5) are woven at the waist part of the garment body (1) and made of high-elasticity spandex filaments; the garment body (1) is made of fabric interwoven by warp yarn and weft yarn, the warp yarn and the weft yarn adopt covering yarn of cotton covered polyester filament yarn, and the cross section of the polyester filament yarn is in a pentagram shape. The garment can keep warm effectively, has a windproof effect, and is easy to wash and quick to dry.

The invention discloses a prestressed PBL stiffening-type steel box concrete composite beam and a construction method thereof, and particularly relates to the technical field of composite structures.According to the composite beam, constraint on concrete is higher, and the bearing property is better. A box chamber used for filling of the concrete is formed by web plates and a bottom plate. The top of the box chamber is in an opening shape. The inner surfaces of the web plates and the upper surface of the bottom plate are provided with PBL stiffening ribs. The corresponding PBL stiffening ribsin a compressed area of the box chamber are connected through transverse pull rods. The edges of the two sides of a tensile zone of the box chamber are provided with axial prestressed tendons. Through joint action of the PBL stiffening ribs and the pull rods, the constraint degree on the concrete by the box chamber can be effectively improved, local buckling is avoided, the void area of the concrete and the box chamber is decreased, and interface slip is reduced accordingly; and the tensile zone of the box chamber is provided with the prestressed tendons, the bearing capacity and flexural rigidity can be obviously improved, so that the composite beam has good seismic performance and the stable later bearing capacity, and thus the suitable span of the structure is increased.

The invention discloses a three-dimensional greening installation structure, which comprises a fixed frame, a fixed grid and a planting substrate. The fixed frame is fixed on the facade of a buildingor structure, the fixed grid is detachably mounted on the fixed frame, the planting substrate continuously covers the fixed grid, and green plants are directly planted on the planting substrate and form a three-dimensional greening unit. Through the composite support system, the problem of three-dimensional greening support is effectively solved, the support structure is stable and reliable, the operability is strong, the construction speed is fast, and the like; and the void area is reduced, the greening coverage is wider, and the greening effect is more remarkable; the three-dimensional greening installation structure also has the characteristics of convenient and efficient replacement and maintenance of greening plants; and the three-dimensional greening installation structure improvesthe aesthetic effect of the building, and enables maintenance of greening plants to be more efficient and convenient with the help of an automatic drip irrigation system.

The invention discloses a cleaning-convenient tree-pit bottom support plate system and relates to the technical field of plant maintenance devices. The support plate system comprises two support plate bodies. The middle part at one side of each support plate body is provided with a rectangular gap. The parts of the two support plate bodies having the rectangular gaps are arranged opposite to each other. The rectangular gaps which are arranged opposite to each other form a tree trunk through-hole. A connection board is fixed at the lower side face of each support plate body. The connection board is vertically arranged. Two hydraulic rods are arranged along the forward and backward direction on the lower side face of the connection board. The bottom of each hydraulic rod is fixedly connected to the bottom of the tree pit. When a cleaner needs to clean the tree pit, the whole support plate bodies are lifted, and movable ends of the hydraulic rods extend upwards under the force to support the support plate bodies so as to keep the support plate bodies a certain distance above the tree pit. Without the need of taking the support plate bodies out of the tree pit, foreign materials in the tree pit can be removed conveniently.

The invention discloses a tree-pit bottom support plate system with long service life and relates to the technical field of plant maintenance devices. The system comprises two support plate bodies. Each support plate body comprises several integrated vertical plates. Several horizontal plates are arranged at intervals between each two vertical plates, and the horizontal plates are arranged at intervals along the forward and backward direction of the support plate body. The horizontal plates on a same straight line are connected together through a connecting rod. The horizontal plate which is opposite to a rectangular gap and positioned at the outmost side is provided with a gap. The horizontal plates with the gaps are fixedly connected to the vertical plates, and the horizontal plates are always in the vertical state. The other horizontal plates are fixedly connected to the connecting rod and rotate with rotation of the connecting rod. The system can effectively prevent inconvenience of too much water in the tree pit for pedestrians. In addition, a U-shaped plate is arranged in the gap. Thus, the installation of a drive motor is more convenient, and the overall strength of the gaps at the outmost side of the horizontal plates is enhanced.

The invention relates to a shade cloth garment with a shape memory function. The shade cloth garment is characterized by comprising a garment body (1) made of pure cotton. The garment body (1) is provided with a collar (2) which is V shaped. The bottom of the garment body (1) is provided with a hem (3) which is made of an elastic band at the bottom of the garment body (1). A lining (4) is woven to the back of the garment body (1). The garment body (1) is made of fabric including a surface layer, a lining layer and a middle layer connected between the surface layer and the lining layer. The surface layer and the lining layer are integrally interwoven with warps and wefts. The shade cloth garment with the shape memory function is effective in thermal insulation, has the wind proofing function, restores flat easily, and wrinkles rarely.

The invention relates to an elastic fabric garment provided with a waist-tightening elastic material. The garment comprises a garment body (1) which is made of pure cotton and provided with a V-shaped collar (2), wherein a lower hem (3) is arranged at the bottom of the garment body (1) and adopts an elastic band knitted at the bottom of the garment body (1); a lining layer (4) is woven on the back of the garment body (1) and made of cashmere wool; two pieces of elastic fabric (5) are woven at the waist part of the garment body (1) and made of high-elasticity spandex filaments; and the garment body (1) is made of warp knitting fabric, the yarn laying rule is 1-0/2-3, facing yarn adopts 75D/36 T400 polyester fiber FDY (fully drawn yarn) filament yarn, ground yarn adopts FDY 84D/36F polyester filament yarn, the T400 polyester fiber FDY filament yarn is hollow, and the cross section is cross-shaped. The garment can keep warm effectively and has a windproof effect; and the made fabric is elastic, comfortable, durable, soft, stiff and smooth and has good drapability.

The invention relates to an anti-bacterial and crease-resistant garment provided with a waist-tightening elastic material. The garment comprises a garment body (1) which is made of pure cotton and provided with a V-shaped collar (2), wherein a lower hem (3) is arranged at the bottom of the garment body (1) and adopts an elastic band knitted at the bottom of the garment body (1); a lining layer (4) is woven on the back of the garment body (1) and made of cashmere wool; two pieces of elastic fabric (5) are woven at the waist part of the garment body (1) and made of high-elasticity spandex filaments; and the garment body (1) is made of fabric consisting of a front crease-resistant layer, a middle bonding layer and a back anti-bacterial layer, the crease-resistant layer adopts a polyurethane material with a memory function, the bonding layer adopts a thermosetting viscose layer, and the anti-bacterial layer adopts a fabric layer containing nano bamboo carbon fibers. The garment can keep warm effectively, has a windproof effect, and is anti-bacterial and crease-resistant.

The invention discloses a tree-pit bottom support plate system having an antitheft function and relates to the technical field of plant maintenance devices. The system comprises two support plate bodies. Each support plate body comprises several vertical plates and horizontal plates. The vertical plates at front and back sides of a rectangular gap are all provided with a locking auxiliary member. The locking auxiliary member comprises an inverted trapezoidal part and a cross fold part. The inverted trapezoidal part comprises a first longitudinal rod and a first vertical rod. The lower end of the first vertical rod is connected to the first longitudinal rod by welding. The first vertical rod passes through the vertical plates and extends above the upper side face of the support plate body. One end of the cross fold part is connected to the upper end of the first vertical rod by welding. The other end of the cross fold part is equipped with a locking ring. The locking rings at left and right sides are locked through a U-shaped lock. The two support plate bodies of the support plate system are connected as a whole through the locking auxiliary members and the U-shaped lock. The system can effectively prevent loss.

The invention discloses a working-reliable tree-pit bottom support plate system and relates to the technical field of plant maintenance devices. The system comprises two support plate bodies. Each support plate body comprises several integrated vertical plates. Several horizontal plates are arranged at intervals between each two vertical plates, and the horizontal plates are arranged at intervals along the forward and backward direction of the support plate body. The horizontal plates on a same straight line are connected together through a connecting rod. The horizontal plate which is opposite to a rectangular gap and positioned at the outmost side is provided with a gap. The horizontal plates with the gaps are fixedly connected to the vertical plates, and the horizontal plates are always in the vertical state. The other horizontal plates are fixedly connected to the connecting rod and rotate with rotation of the connecting rod. The system can effectively prevent inconvenience of too much water in the tree pit for pedestrians. In addition, the system is stably powered by mains supply and operates reliably. When foreign materials in the tree pit need to be cleaned up, the support plate bodies can be lifted to keep a certain height. The system is convenient for cleaning.