Stretching device is prevented to many bows type ground pipe laying

• Main Author: SONG XINJUN
• Format: Patent
• Language: Chinese; English
• Published: 08.12.2017
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

The utility model discloses a stretching device is prevented to many bows type ground pipe laying, including a pipe box and no. Two pipe boxes, its characterized in that, a pipe box and no. Two pipe boxes all are that elastic steel ring constitutes, and the pipe box outside is equipped with the gap, the gap tip is equipped with the connecting block, thereby hoop structure has been constituted, be equipped with drive screw with the pipe box intermediate position that no. Two pipe box is relative, be equipped with the transmission swivel nut on no. Two pipe boxes at drive screw place perpendicularly, be equipped with the turning block between transmission swivel nut and no. Two pipe boxes, be equipped with in the transmission swivel nut with drive screw matched with transmission screw, drive screw stretches into inside the transmission screw, the symmetry is equipped with the uide bushing on no. Two pipe boxes of the upper and lower both sides of transmission swivel nut, be equipped with the guiding hole on the