4results about How to "Moderate weight" patented technology

The utility model relates to the technical field of radiation protection wall, especially to a multilayer composite radiation protection wall, which comprises: a concrete wall body serving as a basic structure of the multilayer composite radiation protection wall; a plurality of protection assemblies covering the inner side of the concrete wall body, which comprises: a polyethylene plate including an inner side facing the concrete wall body and an outer side facing away from the concrete wall body; an inner lead plate arranged between the inner side of the polyethylene plate and the concrete wall body; and an outer lead plate arranged on the outer side of the polyethylene plate. The scheme is used to solve the defects of the prior art, i.e., the whole lead plate of the radiation protection wall leads to inconvenient transportation, needs to be installed in advance, and is difficult to adjust according to the layout in the later period, so as to achieve the purposes of flexible adaptation to different use scenarios and improvement of the radiation protection effect.

This invention relates to the field of timber structure maintenance technology, specifically to a reinforcement and repair device and method for timber structures. It aims to solve the problems of loosening and breakage of existing timber structure connection nodes, cumbersome installation of reinforcement devices, poor adaptability, and low repair efficiency. The device includes a support component and a fixing connection component. The support component drives a clamping plate component via a gear and rack assembly to precisely clamp the timber structure column connection nodes. The fixing connection component uses a fixing ring and a threaded rod to apply tension to the column for fixation. Furthermore, the support column assembly can be flexibly adjusted in height to adapt to different node positions. The reinforcement and repair device has a compact overall structure and is easy to operate; the reinforcement and repair method is efficient, labor-saving, and highly operable, effectively improving the stability and safety of timber structure connection nodes, extending the service life of timber structures, and reducing maintenance costs and the labor intensity of workers.

The invention discloses an electrical test bracket for a drop-out fuse, relates to an auxiliary device for an insulation test of a circuit breaker, and aims to solve the problems of non-standard support, poor safety and low test efficiency of the conventional support device. According to the invention, two insulating pillars are vertically arranged on a metal chassis side by side; the number of the insulation clamping supports is two, the insulation clamping supports are correspondingly arranged at the top end of the insulation supporting column, each insulation clamping support is provided with a groove, and the two grooves are used for being matched with the connecting portions of the two ends of the drop-out fuse so that the drop-out fuse can be kept in a horizontal state. When the drop-out fuse is placed in the groove, the distance between the grounding end of the fuse and the ground is not less than 120cm. The beneficial effect is that the safety and the insulation reliability of the test process are significantly improved.

This utility model discloses a foldable, mobile, and lifting high-altitude construction platform for use in the crossbeam area of ​​bridges. It consists of a supporting crossbeam, a lifting system, a safety system, and a working platform. The supporting crossbeam is made of U-shaped square steel, equipped with a Z-shaped storage handle and a 360° rotating trolley for convenient handling and fine-tuning of the horizontal position. The lifting system uses a motor-driven steel wire rope to move the platform vertically. The safety system includes a safety steel wire rope, a safety device, and a counterweight, which can quickly lock and protect the platform in case of imbalance. The working platform consists of uprights, crossbars, and foldable diagonal braces, with a fall-prevention net suspended at the bottom to form a closed safety space. This utility model discloses a construction platform that requires no large equipment, is easy to install and store, and allows for precise adjustment of the working position. It effectively solves the problems of suspended working surfaces and high safety risks associated with working on high-altitude crossbeams, significantly improving construction safety and efficiency, and is suitable for the complex working environment of bridges.