6results about How to "Improve impact absorption performance" patented technology

This application provides an intelligent fire helmet, comprising: a shell, a buffer layer, a basket-type suspension device, a camera device, a laser emitter, a lighting lamp, an LCD display screen, a sensor device, a main board, and a battery supply module. The shell forms a hemispherical space inside; the buffer layer is disposed on the inner surface of the shell; the basket-type suspension device is connected inside the shell; the camera device, laser emitter, and lighting lamp are connected to the front sides of the shell; the LCD display screen is connected to the front top of the shell; the sensor device is connected to the shell and located on the side or rear of the shell; the battery supply module is electrically connected to the camera device, laser emitter, lighting lamp, LCD display screen, and sensor device; the camera device, laser emitter, lighting lamp, LCD display screen, sensor device, and battery supply module are electrically connected to the main board. This application can realize functions such as camera, screen display, lighting, and laser emission.

The utility model belongs to the technical field of ground paving materials, and relates to a highly wear-resistant shock-absorbing sports wood floor, which comprises a surface layer floor, a bearing layer and a keel layer, the surface layer floor is a highly wear-resistant composite floor, the surface layer of the surface layer floor is a decorative layer, the bottom layer of the surface layer floor is a multi-layer plywood layer, and the keel layer is arranged between the decorative layer and the multi-layer plywood layer. A glue curing layer is arranged; the bearing layer is an oriented strand board, and a damp-proof layer is arranged between the surface layer floor and the bearing layer; the keel layer is composed of a plurality of keel strips arranged in parallel, the keel strips are carbonized laminated veneer lumber, and a bearing layer is fixedly arranged on the surface of the keel layer. The damping layer is arranged at the bottom of the keel layer. A three-layer paving structure is adopted, and the oriented strand board layer is used for replacing a solid wood bearing layer, so that wood resources are saved, and the cost is obviously reduced; the keel is made of carbonized laminated veneer lumber, so that the bearing strength and the deformation resistance of the sports wood floor are improved, the corrosion resistance is also improved, and the service life is prolonged.

This invention provides a yarn holding force control device and method, including an upper yarn guide plate, a lower yarn guide plate, a yarn holding force adjustment device, and a controller. The yarn holding force adjustment device comprises at least one yarn holding force adjustment unit, an actuating rotary element, and a mounting frame. The yarn holding force adjustment unit is located on the mounting frame between the upper and lower yarn guide plates and includes a rotating shaft, a turntable, and a yarn holding assembly. The actuating rotary element and the rotating shaft are respectively disposed on both sides of the mounting frame. The actuating rotary element is connected to one end of the rotating shaft, and the turntable is disposed on the other end of the rotating shaft. The yarn holding assembly forms a zigzag yarn path with an adjustable bending angle on the turntable and the mounting frame. The controller controls the actuating rotary element to drive the rotating shaft and the turntable to rotate, automatically adjusting the yarn holding force passing through the zigzag yarn path. This ensures stable control of the yarn during high-speed winding and features a simple structure that is easy to maintain.

The utility model discloses a long-service-life high-aluminum glass bead which comprises a bead core and a long-service-life high-aluminum glass bead body. The protective layer is arranged on the outer side of the bead core; the colloid layer is arranged between the protective layer and the bead core; the reflective flash sheet is arranged in the colloid layer; the reinforcing layer is arranged between the colloid layer and the bead core; the hook-shaped bulge is arranged at the bottom of the bead core; and the protective layer comprises silicon PU (polyurethane) elasticity. According to the long-life high-alumina glass bead, the glass bead body has better impact resistance, wear resistance and pressure resistance through the reinforcing layer, and the glass bead is coated with the silicon PU elastic layer, so that the impact absorption of the glass bead body is enhanced, the service life of the glass bead body is prolonged, and the service life of the glass bead body is prolonged. The transparent varnish on the surfaces of the glass beads can protect the glass beads, meanwhile, the surfaces of the glass beads are smooth, and refracted light refracted into the glass beads is increased.

The utility model discloses pearl wool with heat dissipation and water seepage prevention functions. Comprising a pearl wool base material layer, a neopentyl glycol heat dissipation layer arranged on the upper surface of the pearl wool base material layer, a pentaerythritol heat dissipation layer arranged on the lower surface of the pearl wool base material layer, and super-hydrophobic nano coatings arranged on the outer surfaces of the neopentyl glycol heat dissipation layer and the pentaerythritol heat dissipation layer respectively, the water drop contact angle of the super-hydrophobic nano coating is greater than 150 degrees; the density of the pearl wool base material layer is 10-20 kg / m < 3 >, and the porosity is 60%-80%. Compared with the prior art, the pearl wool provided by the utility model has better heat dissipation and water seepage prevention performance, not only can the heat dissipation efficiency of the pearl wool in a high-temperature environment be improved, but also the water seepage prevention and moisture prevention performance of the pearl wool in a humid environment can be enhanced.

The present application relates to the technical field of plastic track, especially to the IPC E01C13 field, and more particularly to a prefabricated track coiled material and a preparation method thereof.The prefabricated track coiled material comprises a bottom adhesive (1) and a prefabricated coiled material (2), and the preparation of the prefabricated coiled material (2) comprises an A component and a B component, wherein the raw materials of the A component comprise 65-80 parts of polyether polyol, 20-35 parts of diisocyanate; the raw materials of the B component comprise 10-20 parts of polyether polyol, 8-15 parts of polyurethane crosslinking agent, 15-20 parts of plasticizer, 0.5 parts of color paste, 40-55 parts of filler and 2-5 parts of drier.The polyether polyol comprises polyether polyol with a molecular weight of 2000 and polyether polyol with a molecular weight of 5000, and the weight ratio of the polyether polyol with a molecular weight of 2000 to the polyether polyol with a molecular weight of 5000 in the A component is 1:(1.5-3), which can improve the tensile strength (1.24 MPa) and impact absorption performance (43%) of the coiled material.