3results about How to "Safe open" patented technology

The utility model relates to the technical field of cable sheaths, and discloses an easy-to-tear cable sheath structure, which comprises a shell assembly and an internal protection assembly, the shell assembly is formed by rotatably connecting an upper shell and a lower shell through a connecting shaft, a cylindrical cavity formed by closing the shell assembly accommodates the protection assembly and a cable body, and the protection assembly comprises a rubber layer. A dividing assembly is arranged in the shell assembly and comprises a pulling plate, a tearing rope and an easy-to-tear layer, the tearing rope is arranged between the easy-to-tear layer and connected with the pulling plate, the pulling plate penetrates out of the shell, and connecting assemblies composed of inserting hooks and inserting grooves are arranged at the two ends of the shell assembly. According to the utility model, the pulling plate is pulled to drive the tearing rope to tear the easy-to-tear layer, so that the sheath can be rapidly peeled off by hands, secondary damage to a cable caused by cutting of a cutter is avoided, and meanwhile, the rotary opening and closing of the shell assembly and the end part plugging structure realize repeated utilization and multi-section modular splicing of the sheath, and the cable maintenance efficiency is greatly improved.

The application provides an underwater butt joint reinforcement method in a high water pressure and strong permeation stratum, relates to the field of shield construction, is suitable for underwater butt joint engineering of two large-diameter shield machines, has high safety for high water pressure and strong permeation strata, effectively meets special working conditions of limited underwater construction space, and specifically comprises the following steps: step 1, a plurality of radial grouting holes are arranged in a middle shield of the shield machine, a water stop curtain is formed around the shield machine through radial grouting, and a closed construction environment is provided for subsequent construction; step 2, a plurality of groups of inclined grouting holes are pre-buried on the shield shell, advanced grouting reinforcement is carried out, and the stratum is improved to facilitate the formation of a frozen wall; step 3, after the advanced grouting is completed, a freezing pipe is inserted into the inclined grouting hole to carry out freezing reinforcement; step 4, a pressure relief hole is reserved on the shield machine, the pressure relief hole is inclined through a shield air bubble bin, and the pressure relief hole is used to control the frost heaving force and the frost heaving amount; and step 5, after the freezing is completed, whether water leakage occurs is observed through the pressure relief hole to detect the freezing quality.

This utility model discloses a vehicle door latch, comprising an upper housing and a lower housing arranged opposite to each other. The upper housing has a first hook, and the lower housing has a rotating plate rotatably mounted thereon. A second hook, corresponding to the position of the first hook, is fixed on the rotating plate. A tension spring is connected to the rotating plate, with its other end connected to the lower housing. The upper and lower housings are respectively fixed to the exterior of the vehicle door and body. The first and second hooks interlock to achieve the opening and locking of the vehicle door. Furthermore, the tension of the spring prevents the second hook from easily rotating and disengaging from the first hook, thus preventing the door from closing automatically due to strong winds. This ensures that the latch has strong locking and limiting performance, making the opening and closing of the vehicle door more reliable and safe.