Stepless distance-adjusting double-end anti-loosening spring nut assembly

Abstract

The invention discloses a stepless distance-adjusting double-end anti-loosening spring nut assembly, which comprises a spring nut, a flat hexagonal metal plate nut and a spring, wherein the spring ismounted in the spring nut; the flat hexagonal metal plate nut is arranged at the bottom end of the spring; a hexahedral supporting body is arranged at the bottom end of the spring nut; spring nut rearthreads are formed on one side of the top end of the hexahedral supporting body, and spring nut front threads are formed on the other side; and flat hexagonal metal plate nut front threads are formedon one side of the top end of the flat hexagonal metal plate nut, and flat hexagonal metal plate nut rear threads are formed on the other side. According to the stepless distance-adjusting double-endanti-loosening spring nut assembly, the anti-loosening effect of a fastener is improved while the pressure on the surface of a connected piece can be reduced, the thread distance can be adjusted in astepless mode, precise matching of internal threads and external threads in fastening connection is achieved, the spring and the nuts are integrated, fastening connection, dismounting and mounting are facilitated, the structure is simple, universality is high, the manufacturing process is simple, the weight is light, and cost is low.

Description

technical field [0001] The invention relates to the technical field of fasteners in mechanical engineering, in particular to a double-head anti-loosening spring nut assembly with stepless distance adjustment. Background technique [0002] With the development of science and technology and the improvement of awareness of energy saving and environmental protection, in the fields of aerospace, transportation, electronics, photovoltaics and new energy industries, new requirements are constantly being put forward for the related fastening connections of mechanical equipment and tools; Cooperating with a single helical surface, there is a large pre-tightening force and uneven force on the thread, which will cause damage to the bolt and its thread and the connected parts, especially in the threaded connection with vibrating machinery and environments with large wind and temperature differences. It is necessary to install anti-shock and anti-skid accessories. When there is a special...

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Problems solved by technology

[0002] With the development of science and technology and the improvement of awareness of energy saving and environmental protection, in the fields of aerospace, transportation, electronics, photovoltaics and new energy industries, new requirements are constantly being put forward for the related fastening connections of mechanical equipment and tools; Cooperating with a single helical surface, there is a large pre-tightening force and uneven force on the thread, which will cause damage to the bolt and its thread and the connected parts, especially in the threaded connection with vibrating machinery and environments with large wind and temperature differences. It is necessary to install anti-shock and anti-skid accessories. When there is a special need for precision and safety threaded connections, the requirements for the material and manufacturing process of bolts and hex nuts are particularly high; and in terms of fastener anti-loosening technology, from the basic configuration The anti-loosening technology of spring washers and flat washers has been gradually developed to retighten between double nuts, a gap is opened on the circumference of the middle round nut, the outer circle penetrates the threaded hole + countersunk screw, + built-in staggered cam wedge, variable tooth type and other thread structures Improvement and shape memory alloy intelligent anti-loosening technologies, in addition to increasing the difficulty of fastener manufacturing, also bring difficulties in installation and maintenance

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