2results about How to "Reduce land acquisition" patented technology

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.

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.