3results about How to "Adjustable intensity" patented technology

A cable winding device for power construction, relating to the field of power construction equipment, includes a mobile platform, a cable winding device, and a jet-blowing dust collection device. The jet-blowing dust collection device is equipped with a rotatable jet-blowing component, with a cable channel at its center and radially distributed nozzles pointing towards the cable; a drive mechanism drives the jet-blowing component to rotate around the cable; fixed dust collection devices are symmetrically arranged on both sides of the jet-blowing component along its axial direction; an air supply system supplies air to the jet-blowing component and provides negative pressure to the dust collection devices through a negative pressure fan. By employing the synergistic effect of rotary jet-blowing and negative pressure dust collection, non-contact dynamic cleaning is achieved, completely solving the problems of cable scratches, secondary dust adsorption, and dust pollution caused by traditional brush cleaning.

The application belongs to the technical field of brick and stone cultural relics protection, and particularly discloses a metakaolin-based calcium phosphate chemical bonding mortar, a preparation method and application thereof. The mortar is composed of the following raw materials in percentage by mass: 11.0-14.0% of high-activity coarse metakaolin, 3.0-5.0% of high-activity superfine metakaolin, 13.0-17.0% of calcium dihydrogen phosphate-hydrate powder, 52.0-56.0% of mullite sand, and the balance of mixing water. Compared with the prior art, the repair material can have compatibility, safety and certain weather resistance with the brick and stone cultural relics, the molar ratio of phosphorus and aluminum of the reactant is controlled, the particle size grading of the metakaolin is adjusted, the proportion of the product crystal and amorphous structure is regulated, and then the metakaolin-based calcium phosphate chemical bonding material with a strength gradient is prepared. The setting time of the prepared material is appropriate, the shrinkage rate is low, and there is no soluble salt, so the material has high applicability for the repair and reinforcement of the brick and stone cultural relics.

The application provides application of desalted plant ash in protection of cultural relics in grotto temples. The application also provides a mixed mortar for reinforcement of the cultural relics in the grotto temples and a preparation method thereof. The multi-scale fiber reinforced mixed mortar provided by the application has mechanical properties matched with the protection requirements of the cultural relics in the grotto temples, low shrinkage, good acid resistance and salt resistance, and can cope with various adverse environmental factors such as dry-wet changes, crack water seepage, acid rain, salt crystallization damage and the like in the preservation of the cultural relics in the grotto temples. The preparation method is simple, raw materials are economical and easy to obtain, and the product is light and flexible. The application can solve the problem of insufficient anti-cracking capacity of the existing protection materials for the cultural relics in the grotto temples, improve the safety and durability of the cultural relics in the grotto temples, and has a comprehensive protection effect.