36results about How to "Reasonable mechanical properties" patented technology

The invention discloses a low-odor spray-molded automobile dashboard material and a preparation method thereof. The spray-molded automobile dashboard material comprises two layers, the surface layer is a water-based two-component in-mold paint layer, and the film inner paint is dispersed by water-based polyurethane The body reacts with the aliphatic curing agent to form a film with a certain thickness, the thickness is 10-100μm; the inner layer is a polyurethane layer, and the polyurethane layer contains amino polyether, polyether polyol, chain extender, cross-linking agent, catalyst, etc. and isocyanate compound Formed by polymerization reaction, thickness 0.5‑5 mm. When the material of the present invention is used to prepare an instrument panel, especially when the parts of the instrument panel are in different directions, the material can be solidified rapidly and the sagging phenomenon is avoided. In addition, the instrument panel made of the above materials has reasonable mechanical properties, excellent surface properties and aging resistance, which improves the explosion problem of the safety airbag of the car in an accident and improves the safety performance of the car. The invention discloses a preparation method of the instrument panel material.

The invention provides a three-dimensional roll bending forming device, which comprises a base, an X-direction motion drive mechanism, an X-direction ball screw assembly and a forming rack provided with a roll, wherein the forming rack is movably connected with the base. The three-dimensional roll bending forming device also comprises a Z-direction motion drive mechanism and a Z-direction ball screw assembly, wherein the Z-direction motion drive mechanism and the Z-direction ball screw assembly are vertically arranged; the Z-direction ball screw assembly comprises a Z-direction ball screw and a Z-direction nut assembly which is in rolling connection with the Z-direction ball screw through a ball; and one end of the Z-direction ball screw is linked with the Z-direction motion drive mechanism, and the Z-direction nut assembly is fixedly connected with the forming rack. Therefore, the three-dimensional roll bending forming device is capable of moving in an x and a y planes, and also moving in the Z-axis direction when raw materials are subjected to bending deflection operation; and the accuracy of carrying out bending deflection on the raw materials is improved, three-dimensional processing on the raw materials is realized, and the section bar obtained by processing has reasonable mechanical property.

The invention discloses an integral wheel for a locomotive, comprising a hub, a spoke plate and a rim. The spoke plate is a curved structure, one end of the spoke plate is connected with the wheel hub, the other end of the spoke plate is connected with the rim, and the end of the rim is far away from the spoke plate. With rim and tread. The wheel of the present invention can be applied to railway locomotives, is suitable for tread braking or axle disc braking, and is easy to mass produce. The spoke includes a hub-spoke transition area, a spoke main body and a rim-spoke transition area, the hub-spoke transition area is located between the hub and the spoke main body, and the rim-spoke transition area is located between the rim and the spoke main body . Both the hub-spoke transition area and the rim-spoke transition area are circular arc structures. The circular arc direction of the hub-spoke transition area is opposite to the circular arc direction of the rim-spoke transition area. The two ends of the web body are respectively tangent to the hub-web transition area and the rim-web transition area. The invention also discloses a design method for the integral wheel of the locomotive.

The invention provides a three-dimensional single-side variable-cross-section roll-bending forming machine which comprises a rack, a forming roll part, an auxiliary roll part, a rotary part and a driving mechanism, wherein the rack comprises a fixed rack and a movable rack movably connected with the fixed rack; the rotary part is driven by the driving mechanism and is connected with the movable rack; the forming roll part is connected with the rotary part and is driven by the driving mechanism; and the auxiliary roll part is arranged on the fixed rack opposite to the rotary part. According tothe invention, the technical problem that the plate can not be deformed along the longitudinal direction is effectively solved, and the requirement for practical production can be better met. Simultaneously, a single-shaft variable-cross-section roll-bending forming technology is utilized in the invention, a cold-bending technology and a servo control technology are combined together, and the continuous change of the shape of the cross section can be realized in the longitudinal direction of the profile according to the design requirement, so that the cold-bending forming profile has more reasonable mechanical property.

The invention provides a new technology for preparing converter slag-regulating reagent by light-burning dolomite powder ash, which comprises the following steps of: carrying out particle size sieving on calcined dolomite; directly sending light-burning dolomite blocks of which the diameter is more than 5mm into a steel mill to be used; sieving the light-burning dolomite blocks of which the diameter is less than 5mm to a certain degree; crushing the light-burning dolomite blocks of which the diameter is more than 3mm to ensure that the particle size of the light-burning dolomite is less than 3mm; blending and adding certain binding agent and water into the light-burning dolomite powder ash of which the particle size is less than 3mm; pelletizing in a disc balling machine to obtain a light-burning dolomite pellet of which the particle size is more than 15mm; and after the pellet is conserved to meet a converter slag-regulating reagent requirement, sending the pellet to the steel mill to replace the light-burning dolomite block for use. According to the new technology disclosed by the invention, the light-burning dolomite powder ash is pelletized by adding a certain quantity of bonding agent and a proper quantity of water, and the technology is simple. In addition, due to the fact that the iron and steel enterprise has an abundant pellet production experience, the new technology is favorable for the high-value utilization of the light-burning dolomite powder ash, and has important meanings on energy saving, emission reduction and resource utilization of the iron and steel industry.

The invention discloses a mirror board support device of a solar trough type power generation system, which comprises a grider brace and a reflector supporting structure, wherein the reflector supporting structure is arranged on the grider brace through rotating parts which are arranged on two ends of the reflector supporting structure, and can rotate around axial lines of the rotating parts under the drive of an external drive device; the reflector support structure comprises a plurality of grider framework units which are connected end to end, and arc supporting parts for supporting a reflector mirror are arranged on two ends of each grider framework unit. The mirror board support device of the solar trough type power generation system has the advantages that: 1) each main member can be produced in a factory standardization manner; 2) mechanical bending resistance and torsional properties of the grider framework structures are reasonable, and materials are saved; 3) connection quantity of field bolts is little, assembly errors are favorably controlled, and assembly accuracy is higher.

The invention provides an antistatic tube cloth for mining, which is formed by interweaving monofilaments in the warp direction and weft direction. In a square area of ​​2.5 cm by 2.5 cm, the number of monofilaments in the warp direction is at least 7, and at most 12, the number of monofilaments in the weft direction is at least 6 and at most 11. The invention overcomes the unreasonable weaving density of the mine-used anti-static tube cloth in the prior art, which affects the use in construction, and further achieves the effects of high strength and reasonable mechanical properties of the mine-used anti-static tube cloth.

The invention discloses an adjustable mold heating and clamping platform for a composite material pultrusion machine, relates to an adjustable mold heating and clamping platform, and aims to solve the problems that quality and performance of a product are directly influenced due to the fact that the straightness of the mold center and a traction center cannot be adjusted with a conventional pultrusion machine mold fixing and heating manner. A tension detecting and unloading support is fixedly mounted on the left side of the upper end of a mold heating and clamping platform, a sinking platform is arranged on the mold heating and clamping platform, a support sliding table is mounted on the sinking platform of the mold heating and clamping platform, two adjustable mold clamping devices are glidingly arranged on the support sliding table, a protecting cover is mounted in the middle of the support sliding table, a mold positioning bracket is mounted on one adjustable mold clamping device close to one side of the tension detecting and unloading support, a pultrusion mold is mounted between the two adjustable mold clamping devices and is positioned by the mold positioning bracket, and a heating plate is mounted on the pultrusion mold. The adjustable mold heating and clamping platform applies to composite material pultrusion.

The invention relates to the technical field of hoisting equipment, in particular to a tower crane blind area ultrathin steel plate shear wall hoisting device and a hoisting method thereof. The towercrane blind area ultrathin steel plate shear wall hoisting device comprises a shoulder pole beam, two shoulder pole beam riggings used for being connected with one end of a steel plate shear wall areconnected with one end of the lower surface of the shoulder pole beam, an electric hoist is arranged in the middle of the lower surface of the shoulder pole beam, a hook of the electric hoist is connected with two electric hoist riggings used for being connected with the middle of the steel plate shear wall, and the two ends of the upper surface of the shoulder pole beam are connected with two hoisting riggings connected with a lifting hook of a swing arm tower crane. The tower crane blind area ultrathin steel plate shear wall hoisting device and the hoisting method thereof are easy, convenient and rapid to operate, low in cost, safe and reliable and high in stability, and plastic deformation does not occur on the steel plate shear wall in the hoisting process.