31results about How to "Avoid potholes" patented technology

The invention discloses a reinforcing rib pressing machine for color steel tiles and a method for using the same, and relates to the technical field of color steel tile processing, in particular to a steel plate body and a size adjustment assembly, and a first movable bracket is arranged under the right end of the steel plate body , the output end of the first motor is connected with a first gear, the bottom of the hydraulic press is connected with a second movable support, the output end of the second motor is connected with a second gear, and the second gears are connected by The second transmission belts are connected to each other, and the size adjustment assembly is arranged on one of the main lower pressing roller and the main supporting pressing roller. The reinforced rib pressing machine for color steel tiles and its use method can carry out pressing operations for steel plate bodies of different widths by adjusting the width dimensions of the main support pressure roller and the main lower pressure roller, and repair the steel plate body after pressing In order to improve the aesthetics and improve the size accuracy, the width of the main support roller and the main lower roller can be reduced to the minimum when idle, so as to reduce the volume and facilitate storage.

The invention relates to the technical field of traffic road paving, and discloses a stone slab building block paving structure suitable for traffic loads at all levels. The upper surface of the soilbottom layer is covered with a fine stone concrete layer, the upper surface of the fine stone concrete layer is covered with a sand stone soil layer, the upper surface of the sand stone soil layer isprovided with a fixing component, the upper surface of the fixing component is provided with a building block stone slab component in an embedded mode, and the upper surface of the fixing component isprovided with a fixing anchor rod. According to the structure, the structural strength of paved stone slab building blocks can be increased by arranging the building block stone slab component, the pressure born by the paved stone slab building blocks is increased, the generation of cracks in the surfaces of the paved stone slab building blocks is reduced, the surfaces of the paved stone slab building blocks are provided with anti-slip grooves, the slip of pedestrians can be avoided, and the safety is increased; and the fixing component can maintain the integrity of the shapes of the paved stone slab building blocks when the paved stone slab building blocks are damaged and broken, the pavement is prevented from being uneven and is free of pits, and water accumulating in the rainy days isavoided.

The invention discloses lifting-hoisting equipment for overhead working tempered glass. The lifting-hoisting equipment for the overhead working tempered glass structurally comprises a bearing tower, apulley, an ascending-descending rod, a hoisting rope, an operation tower, a support, a load-bearing tower, a base and a hoisting tower. The lifting-hoisting equipment for the overhead working tempered glass has the following beneficial effects: the problem is solved by researching and developing an anti-collision device on the hoisting tower, the anti-collision device is provided with ball bags and air bags at the two sides and the top which are parts with high probability of making contact with and even colliding with an outer wall surface, or directly making contact with and even collidingwith the outer wall surface separately, and an impact force generated during the collision on the device is eliminated by virtue of the elastic potential energy and the flexible characteristics of themembers; and due to the structure arrangement of the anti-collision device, direct contact between tempered glass and the outer wall surface can be effectively avoided, and pits and unfilled cornersgenerated on the surface and the edge of the glass due to the impact force are avoided, so that the use performance and the compression stress of the tempered glass are ensured.

The invention relates to the field of buildings and particularly relates to a production method of sand blast fair-faced concrete. The production method comprises the following steps of a, carrying out sand blast treatment on a molding surface of a mould, wherein the particle size of the blasted fine sand is smaller than 1.5mm, and the color of the sand blasted on the molding surface of the mould is uniform; b, placing a steel reinforcement cage into the mould; c, pouring the stirred concrete into the mould, and screeding the upper surface of the concrete in the mould; and d, dismounting the mould after the strength of the concrete meets the requirement, and spraying a protective agent on the fair-faced surface of the molded concrete to obtain the sand blast fair-faced concrete. The fine sand is sprayed on the molding surface of the mould, and flaws on the molding surface of the mould are removed, so that the molding surface of the mould is more smooth and is uniform in color, pot holes in the surface of the concrete are avoided, the concrete is molded at one time without mending, the concrete is kept uniform in veneering color and free of air bubbles and has a matting effect, the construction cost is further reduced, and the work efficiency is increased.

The invention discloses a manufacturing method for a sand mold casting machine tool. The main point of the technical scheme is the manufacturing method for the sand mold casting machine tool. The manufacturing method comprises the steps that mixed moulding sand is guided into a mould frame for fixing and forming, and a machine tool model is prefabricated in the mould frame; a plurality of independent sand mold moulds are arranged inside the mould frame, and flow channels allowing molten iron to flow are formed between every two adjacent sand mold moulds; the inner surface of the mould frame and the surfaces of the sand mold moulds are coated with fireproof coating agents in a flowing mode; the coating agents are mixed with alcohol and sintered on the surfaces of the sand mold moulds through ignition ; breathable through holes are formed in the side wall of the mould frame, and gas in the moulding sand is heated in the casting process and discharged through the breathable holes; and at the time of casting, the molten iron is cooled to 1360-1380 DEG C, then slowly guided into the molten iron flow channels, and the gas in the flow channels is ignited to be burned. The surface of the machine tool manufactured by the manufacturing method for the sand mold casting machine tool is smooth and level, air holes do not occur, and the rate of finished products is high.

The invention discloses a rapid transit roadbed, which comprises sequentially arranged from bottom to top: a soft soil base, which is formed by leveling and compacting soft soil, and a drainage main pipe is pre-buried in the soft soil base; a gravel layer, which is poured with gravel and cement Formed above the soft soil base, the gravel layer is equipped with retaining walls, load-bearing frames and monitoring structures; the gravel layer is formed by pouring gravel and cement, and a water tank is installed inside the gravel layer; the permeable brick layer is brick The body is formed above the gravel layer, and the permeable brick layer is provided with a permeable structure; the asphalt concrete layer is formed above the permeable brick layer, and the asphalt concrete layer includes coarse-grained asphalt concrete below and medium-grained asphalt concrete above, and interposed between two the stiffeners between them; the pavement layer, which is formed above the asphalt concrete layer. The invention can quickly drain water, improve the safety of the rapid transit bus running in rainy days, control road surface settlement at the same time, perform effective jacking and timely response, and improve the service life of the rapid transit roadbed.