4results about How to "Reduce land acquisition" patented technology

The present invention belongs to the field of traction power supply for electrified railways, and specifically relates to a high-speed railway multi-line shared traction substation system, which aims to solve the problems of high transformation cost and difficulty in achieving precise control of existing substation systems. The traction substation system of the present invention shares an external power supply input line, and the output line supplies power to multiple railway feeders. The main connection adopts a line transformer group connection method to realize the replacement and addition of existing equipment, and achieve the function of multiple feeders sharing a traction substation. The monitoring and protection device is connected to the integrated automation system to detect the status of the power supply system in real time. The method also includes a data processing and transmission module for alarm prompts, and establishes a transformation database to verify the transformation effect to ensure the stability and safety of the traction power supply system. The method of the present invention transforms the traction substation system, has low resource consumption, can achieve precise control, and provides data support for further improving the transformation effect in the future.

The utility model discloses a movable air compression device for a tunnel, which comprises an air compressor main body, a displacement mechanism convenient to move is arranged at the bottom of the air compressor main body, and a chock mechanism for limiting the displacement mechanism and an adjusting mechanism for adjusting the position of the chock mechanism are arranged below the displacement mechanism; the air compressor body can be moved to be close to the tunnel face at any time through the displacement mechanism, a traditional long-distance ventilation pipeline in the tunnel is not needed, the purchasing cost of the ventilation pipeline is reduced, and air pipe air leakage caused by long-distance pipeline ventilation is also reduced; structural components of the chock mechanism and the adjusting mechanism are designed not to extend towards the outer edge of the air compressor body, the space at the bottom of the displacement mechanism can be fully utilized, the position of the displacement mechanism is fixed in the limited space, and therefore the whole movable air compression device for the tunnel is small in occupied space, compact in structure and high in practicability. An air compression station does not need to be built, land acquisition and investment of a site are reduced, and meanwhile moving and transferring are convenient.

The invention relates to the field of foundation pit excavation, and discloses a reinforcement cage with an anchorage device for reducing land acquisition, the reinforcement cage comprises a reinforcement cage and a steel support, the reinforcement cage comprises a plurality of main reinforcements, the steel support comprises an arc-shaped panel, a connecting part and a base which are connected in sequence, and the main reinforcements penetrate through the connecting part and are fixedly connected with the connecting part; the base is arranged on the side, close to the center of the reinforcement cage, of the arc-shaped panel and used for guiding the anchor cable. And the base and the connecting part form an anchorage device operation cavity which is used for embedding the anchorage device in the pile body, so that numerous bulges are prevented from being formed on the side wall of the foundation pit.

This utility model relates to a novel deformation lidar mounting bracket, which, from bottom to top, includes a forced centering base and several layers of brackets. The forced centering base is fixed to the observation pier by connectors. A protruding stud (first type) is provided at the center of its top surface, and a protruding stud (second type) is provided at the center of the top surface of each bracket. A threaded hole is provided at the center of the bottom surface of the bracket, which can be threadedly connected to either stud (first type) or stud (second type). The outer diameter of the lower layer of brackets is larger than that of the upper layer of brackets, and several protruding studs (third type) are arranged on the edge of the top surface of each layer of brackets. The studs (third type) are used to connect the deformation lidar. The advantages are: by setting lidar points at different heights, more deformation observation points can be covered as much as possible, reducing the number of lidar point installation locations, reducing land acquisition and financial pressure; and by setting mounting brackets of different sizes, it can meet the needs of various water conservancy construction projects, thus broadening the applicability of the equipment to a certain extent.