3results about How to "Save work time" patented technology

This application relates to the field of geotechnical engineering and underground engineering construction technology, and discloses a method for trenching hard rock walls based on small-diameter borehole blasting pre-splitting. The method includes: conducting a geological survey of the construction area to determine whether it belongs to hard rock strata that are difficult to directly trench mechanically; if so, determining the locations of two small-diameter boreholes for a section of the wall to be trenched; drilling small-diameter boreholes at the locations and collecting rock cores during the drilling process; identifying the target hard rock section based on the analysis of the rock cores; blasting explosives at the corresponding borehole depth to create pre-splitting fractures in the hard rock mass between the two small-diameter boreholes; and excavating the hard rock mass with pre-splitting fractures between the two small-diameter boreholes to complete the trenching of the wall section. This application achieves significant optimization of construction economy and operational efficiency while ensuring trenching quality.

The application discloses a non-vertical concrete wall surface steel bar binding platform device, which comprises a rectangular steel shear brace for supporting between vertical wall surface steel bars and non-vertical wall surface steel bars, the rectangular steel shear brace is formed by two rectangular steels intersecting, bolt holes and shear brace locking bolts are arranged at the intersection of the two rectangular steels; when the rectangular steel shear brace is unfolded, the line connecting the upper and lower two ends of one side of the rectangular steel shear brace is perpendicular to the ground and parallel to the vertical wall surface steel bars; the line connecting the upper and lower two ends of the other side of the rectangular steel shear brace is parallel to the non-vertical wall surface steel bars; and a horizontal pin rod is arranged between the upper two ends of the rectangular steel shear brace. The application is designed according to the maximum height of steel bar binding in one time, and can realize the rapid erection and removal of the steel bar binding work platform; the materials used in the device are all common materials, which are convenient to purchase, simple to manufacture and easy to copy, and meet the requirements of standardization and assembly of on-site construction.

This application provides a sliding sealing mechanism and a compressed air energy storage device. The sliding sealing mechanism includes a first sleeve, a first tube body, and a connector. The first sleeve has a movable hole. The first tube body is sleeved in the movable hole. The first tube body can be connected to or detached from the first sleeve. The first tube body is connected to a sealing element. One end of the connector is inserted into the first sleeve, and the other end of the connector is inserted into the first tube body. When the outer end of the first sleeve is positioned at the external positioning sealing section, the first tube body impacts the connector as the upper tube body moves, until the connector changes from an intact state to a disconnected state. The first tube body can move relative to the first sleeve. The sealing element seals with the first sleeve as the first tube body moves. The connector ensures that the first tube body and the first sleeve are in a stationary state due to their contact. When the connector is in a disconnected state, the first tube body and the first sleeve are sealed, simplifying the structure of the sliding sealing mechanism.