232results about How to "Play a role in safety protection" patented technology

The invention discloses a road guard rail and a building method thereof. The road guard rail comprises upright columns, the lower part of each upright column is fixed on the ground, the upper part facing the road of the upright column is fixed with a tyre, a beam is fixed on the upright column and arranged between two upright column, the side of the beams facing the road is fixed with the tyres vertically in parallel, brackets is fixed on the upright column and arranged on the upper beams and the lower beams, and a guide plate is fixed on the inner wall of the road-facing side of each tyre, and reflective materials are arranged on the external wall of road-facing side of the tyre and / or the guide plate. The building method in the invention is implemented by fixing the brackets on the upright columns, on the upper beams and the lower beams, fixing tyres on the upper beams and the lower beams to form the guard rail. The guard rail built by the method in the invention not only efficiently utilizes waste tyres but also utilizes elastic property of the tyres; the built guard rails the built guard rail has good guidance quality, and can effectively buffer collision; building coast is relatively low, construction is simple and maintenance is easy.

The invention provides a smoke cartridge. The smoke cartridge comprises a liquid storage tube, a liquid outlet mechanism, an elastic part and a first magnetic part, wherein the elastic part and the first magnetic part are stored in the liquid outlet mechanism which is arranged on the liquid storage tube. The liquid storage tube is provided with a liquid storage cavity, the liquid outlet mechanism is provided with liquid guide holes communicated with the liquid storage cavity, and the smoke cartridge is further provided with a liquid outlet hole communicated with the liquid guide holes. The first magnetic part is slidably stored in the liquid outlet mechanism, one end of the elastic part is elastically abutted against the inner wall of the liquid outlet mechanism, the other end of the elastic part is elastically abutted against the first magnetic part, and the first magnetic part is capable of closing the liquid guide holes under the action of the elastic part. When the smoke cartridge is stored independently, the liquid guide holes are closed by the first magnetic part under the elastic force, so that smoke liquid leakage is avoided, and safety of children is protected to some extent.

The invention discloses an accelerated loading abrasion device for a pavement. The device comprises a housing, a support, a loading tire, a test piece tray, a pavement slab test piece, an oil pressure self-control loading device, a loading tire power system, a carborundum scattering device, a water film thickness control valve and a temperature adjusting system, wherein an instrument control panel is also arranged on the housing. With the adoption of the device, rotating and rolling actions of the tire on the pavement can be effectively simulated, and meanwhile, effects caused by the shearing force exerted on the pavement slab test piece by the tire on a curve on the pavement is also simulated.

The invention relates to a scissors-type accessible elevating platform, comprising a scissors-type machine frame, an elevating platform, a hydraulic cylinder elevating mechanism and an automatic plate-turnover mechanism. The scissors-type machine frame comprises a bottom frame, a scissors-type inside / outside arm support, an inclined-supporting track, a cam plate and an oil-cylinder roller wheel; the bottom end of the scissors-type inside / outside arm support is installed at the bottom frame, the inclined-supporting track is installed at the hinge position of the scissors-type inside / outside arm support, the cam plate is installed at the arm support and supports the oil-cylinder roller wheel, the oil-cylinder roller wheel is connected with a hydraulic cylinder. The hydraulic cylinder is installed at the upper end of the arm support, and the hydraulic cylinder rod is connected with the oil-cylinder roller wheel. The automatic plate-turnover mechanism comprises a plate-turnover oil cylinder, a plate-turnover oil cylinder support seat, a plate-turnover gas spring, a plate-turnover connecting strip, a plate-turnover connecting strip lug and a turnover plate; the rod of the plate-turnover oil cylinder is connected with the plate-turnover connecting strip and then is connected with the plate-turnover connecting strip lug, one end of the turnover plate is connected with the plate-turnover connecting strip lug, and the plate-turnover gas spring is connected with the turnover plate. The scissors-type accessible elevating platform is driven by hydraulic pressure, and the elevating is smooth and safe; the device is directly installed at the ground, and the pit which is matched with civil construction is not required, the construction is simple and convenient; the maintenance is simple and convenient, and the operation is simple.