Abstract: A driving feed roller belongs to a driving feed roller in a paper feeding and feeding device. The steel plate strips have small convex aggregates of equal size, equal height, same shape and equal spacing. The steel strips are spirally rolled into tubular parts, the tubular parts are sleeved on the inner liners, and the rotary shafts are inserted into the inner liners. Compared with the prior art, the utility model has the advantages of light weight, moderate friction, fast feeding speed, good feeding stability, good abrasion resistance, long service life, and the like. The utility model is suitable for the paper feeding mechanism of printers, plotters, copiers, facsimile machines, digital printing machines, printing machines and cutting plotters, and the feeding mechanism of inkjet printers.
Ground earth anchors can be divided into anchor piles, anchor points, anchor ingots, and drag pits. In lifting operations, ground anchors are commonly used to fix drag ropes, cable wind ropes, hoists, guide pulleys, etc., ground anchors are generally prefabricated with steel wire ropes, steel pipes, and reinforced concrete Buried pieces, logs, etc. are made by burying them in the ground.
1. The ground Earth anchors used for hoisting should be made strictly according to the design, and concealed engineering records should be kept, and overloading is not allowed when using;
2. The ground anchor pit should be dug into a right-angled trapezoid shape, and the angle between the slope and the vertical should be 150 degrees. The anchor depth is determined according to the comprehensive situation of the site;
3. The angle between the drag rope and the horizontal plane is generally less than 30 degrees. The exit point of the ground anchor foundation pit (that is, the place where the wire rope passes through the soil layer and exposes the ground) is 2.5 times the depth of the front pit and within 2 meters on both sides of the foundation pit. No trenches, cables, underground pipelines and other structures, as well as temporary trenching, etc.;
4. No water should accumulate around the ground anchor;
5. Ground anchors are not allowed to be installed in the forward direction along the embedded parts
Earch Anchor,Duckbill Earth Anchors,Auger Ground Anchors,Heavy Duty Earth Anchors
China Senbo Industry Co.,ltd , https://www.yylpaper.com