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[CN 201910090186.7] Crankshaft connecting rod fastening device for mechanical press
[CN 201910090186.7] Title of a Mechanical Press Crankshaft Connecting Rod Fastening Device: Application Number of a Mechanical Press Crankshaft Connecting Rod Fastening Device: CN 201910090186.7 Applicant: Rongcheng East China Forging Machine Tool Co., Ltd.; Li Lifeng Application Date: 2019-1-30 Patent Type: Invention Application for a Mechanical Press Crankshaft Connecting Rod Fastening Device for Connecting Rod Cover and Connecting Rod Body, The connecting rod cover has a light hole, and the connecting rod body has an internal thread hole, it includes a plurality of spaced threaded connecting rods connected between the connecting rod body and the connecting rod cover, and nuts respectively penetrating the threaded connecting rod shaft. The threaded connecting rod is provided with a heating channel inside, and the vertical The internal thread hole is provided with a locking channel and a cylindrical pin in the heating channel, and a stretching device is provided corresponding to the position of the end of the heating channel of the threaded connecting rod; the heating channel is used to heat the threaded connecting rod, using the principle of thermal expansion and contraction of metal and mechanical stretching and prestressing deformation technology, and cooperating with the locking key plate and cylindrical pin, the locking key plate is used to fasten the connecting rod cover and the nut to prevent the connecting rod cover and the nut The loosening between the two increases the pre-tightening force between the connecting rod cover and the connecting rod body and enhances the fastening effect.
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