5results about How to "Retractable" patented technology

The utility model relates to a water conservancy monitoring device for a water conservancy project, and relates to the field of water conservancy monitoring devices. The device comprises a floating seat, an equipment seat is installed on the upper end face of the floating seat, the equipment seat is fixedly connected with the floating seat, a load bearing ring is further fixedly installed on the lower end face of the floating seat, an equipment box is fixedly installed on the upper end face of the equipment seat, and a detection platform is horizontally arranged on the upper end face of the equipment box. A monitoring box and a shooting assembly are fixedly installed on the upper end face of the detection platform, and a vertical pipe base is further fixedly installed at the center of the upper end face of the detection platform. Through the arrangement of the load bearing ring and the reasonable design of the structure of the floating seat, the device has good stability on the water surface, can resist the influence of water flow fluctuation and stormy waves, reduces the risks of shaking and toppling, and guarantees the accuracy of monitoring data. The winding assembly can conveniently control the depth of the water quality detector, so that the water quality at different depths can be conveniently detected.

The invention relates to the technical field of water taking and filtering, and particularly discloses a water taking and filtering device for an automatic water quality monitoring station, comprising a water taking and filtering device body which comprises an outer cylinder and a submersible pump; the inner cylinder is mounted on the inner side of the outer cylinder, and the inner cylinder is arranged on the inner side of the outer cylinder in a sleeving manner; the fine filter screen is mounted in the closed frame in a sliding manner; the sealing cover is installed outside the submersible pump and used for covering the submersible pump, and an annular cavity is formed between the sealing cover and the inner cylinder; the movable plate is connected into the annular cavity; a cleaning motor drives a lead screw to rotate, then the lead screw drives a movable plate to move up and down, when the movable plate moves downwards, air in an annular cavity can be squeezed downwards through the squeezing effect of the movable plate on the annular cavity, water is driven to flow in the direction of a water inlet and a filtering cover through air squeezing, and when a certain speed is reached, the water is filtered out. And the impact can be caused on the fine filter screen and the filter cover at the water inlet, so that sediments on the fine filter screen and the filter cover at the water inlet are washed, and the purpose of self-cleaning is achieved.

This utility model discloses a well cleaning operation device, characterized by comprising a support frame and a reel mounted on the support frame. The outer circumference of the reel is connected to one end of a hook structure. An anti-reverse structure, maintaining contact with the reel, is also installed on the support frame. The anti-reverse structure includes an adjusting component mounted on the support frame and a limiting component mounted on the reel. This utility model has a simple structure. By rotating the reel, the hook structure can be easily raised and lowered, thus completing the lowering and raising of the bucket. Compared with traditional methods, the operation process is simpler, the workload is significantly reduced, and the efficiency of the cleaning operation is improved. Furthermore, the anti-reverse structure design ensures that even if the operator releases the crank handle and the bucket attempts to rotate the reel in the opposite direction due to gravity, the cooperation structure of the limiting component and the adjusting component restricts the limiting component to only one rotation, effectively preventing the bucket from accidentally falling and greatly improving operational safety.

This utility model relates to the field of stage lighting technology and discloses an adjustable stage lighting rig, including a support frame. A top block is fixedly connected to the top of the support frame, and a fixing ring is installed in the middle of the support frame. Top rods and bottom rods are fixedly connected to the top block and the fixing ring on both sides, respectively. A top groove is opened through the middle of each top rod. A receiving groove is opened in the middle of the top block. A rotating rod is rotatably connected to the inner wall of the receiving groove, penetrating to the inner wall of the two top grooves. A take-up roller is fixedly connected to the wall of each rotating rod in the top groove. An anti-glare curtain is wound in the groove of the take-up roller. Positive soft magnetic blocks are provided on the two outer walls of the anti-glare curtain near the lower end. A bottom groove is opened through the inside of each bottom rod. A bottom negative magnetic block and a top negative magnetic block are fixedly connected to the two inner side walls of the bottom groove and the top groove, respectively. This utility model can flexibly switch between lighting and anti-glare modes according to the scene, improving the flexibility and ease of use of stage lighting adjustment.

The utility model discloses an assembly type folding ladder which comprises outer supporting legs, inner supporting legs are rotationally connected to the interiors of the top ends of the outer supporting legs on the two sides respectively, communicating grooves are formed in the upper sides of the outer supporting legs and the upper sides of the inner supporting legs, and sliding grooves communicated with the communicating grooves are formed in the outer supporting legs and the inner supporting legs. A first gear is rotatably connected to the inner wall of the bottom end of the sliding groove, the tail end of the first gear penetrates through the sliding groove to be fixedly connected with a rotating wheel, the top of the first gear is in meshed connection with a second gear, the tail end of the second gear is fixedly connected with a lead screw, the outer side of the lead screw is in meshed connection with a moving table, and a connecting piece is fixedly connected to the top of the moving table; the connecting pieces penetrate through the outer sides of the communicating grooves to be connected with pushing rods through rotating shafts, the sides, deviating from each other, of the outer sides of the two sets of outer supporting legs and the inner supporting legs are rotationally connected with a plurality of handrails, the other ends of the handrails are rotationally connected with the pushing rods, the foldable handrails can be added to the folding ladder, and the using safety of the folding ladder is improved.