PIPE RELEASE PROTECTION UNIT OF STEEL PIPE JOINT

摘要

The present invention relates to a water supply and drainage piping to connect the relatively large tube diameter is in the casting of the steel pipe preventing yieumgu pipe body leaving the device is mainly used.; Conventional steel pipe yieumgu forms a locking step (6 ') is fitted engaging the fitting part (3 being') and the engaging groove 3 of the tube body 6 to the flange portion 2 of the yieumgu body (1), the tube (6 ) the fitting portion (3 ') of the fastening bolt when continuously severe vibration ground, such as during an earthquake relaxed because it to secure to the fastening bolt in the after-fit engagement by the engagement part 3, the state of the tube through the variation in the locking jaw is separated from the free-jam grooves There is probable cause that a major accident could be two evils to avoid its use.; Invention a base thereof to the present invention invention to solve the above problems is the fitting to form an inclined portion fit portion (3 ') and the locking groove (3) formed in the flange part (2) the left and right sides of the tube yieumgu body (1) engaging the part (3 ') and engaging able to be opposing to the engaging groove 3 jaws (5') and the fitting projection (5 ') of the wedge-shaped when using them to form a fastener (5) in the tube body (6) when "a fitting portion (3 a flange portion (2) jaw 6 'to fit over) when the fitting engagement with the engaging groove (3) inserting the fastener 5 to the fitting portion (3') next flange part (2 ) fitting portion 3 and a 'when fastening a) engaging shoulder (5 of the fastener (5), by matching the screw hole in the fixing bolt (2' '), screw holes (2 perforated in') between the flange portion ( a locking groove (3) in Fig. 2) will also allow one to prevent that the locking step (6 '), leaving free in the pipe yieumgu of the tube (6) is continuously ground to a severe seismic vibration with a strong body.