Thievery prevention device for motor fixing bolt

• Main Authors: WANG LIFENG, SUI TONGHUA, MEI SHENGCAI, ZHANG PING, YU YANLIANG, SUN ZHIGANG, GENG JINHUA, YU TAO, TIAN XIAOHONG, HUANG XIANGMEI, ZHANG JUNYING, BAI DONGMEI
• Format: Patent
• Language: Chinese; English
• Published: 19.01.2011
• Subjects: BLASTING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model relates to well head equipment of a pumping well in an oil field, particularly to a thievery prevention device for a motor fixing bolt. A motor base is fixed on a motor track through a motor fixing bolt group, an insertion block is inserted into the lower part of the side plate of the motor base, two symmetrically arranged connectors are tightly attached on the side plate of the motor base, an insertion pin at the lower part of a disassembly prevention cover is inserted into an insertion slot on each connector, the disassembly prevention cover is arranged on each connector and is provided with an open slot and a window, the width of the window is larger than that of the open slot, the width of the bolt is larger than that of the open slot and is smaller than the width of the window, a bolt base is arranged on the inner bottom surface of each disassembly prevention cover, the male threads of the bolt are connected with the female threads of the insertion block, and two symmetrically arranged