Double universal joint pin cardan joint

Abstract

The invention discloses a double universal joint pin cardan joint comprising a flange jaw, a universal joint pin and a bearing, wherein a cross screw and a nut connect two forks of the flange jaw into a whole, i.e. the flange jaw, the bearing, the cross screw and the nut are connected to form a sealed jaw; a flying height B exists between the universal joint pin and the bearing; two ends of the cross screw are provided with a plane bearing and a laminated spring; the hollow C of the universal joint pin only accounts for 7-8% of universal joint pin cross section; the hollow C of the universal joint pin is provided with a squirming lubrication system; and a gap D next to the bearing is provided with a seal. Compared with the prior art, transmission capacity is overall improved by 28-30%; the floating universal joint pin without string action gaps can automatically balance on the structural central point O of the structure, thus reducing additional stress produced by an additional moment; the double universal joint pin cardan joint is especially suitable for high-speed rotation and has stable transmission and long service life.

Description

technical field [0001] The invention relates to a cross shaft universal joint. Background technique [0002] A cross shaft universal joint usually consists of two flange yokes, a cross shaft, four bearings and some other parts. like figure 1 The cross shaft universal joint shown in (b) is a typical structure of the cross shaft universal joint with integral yoke head in my country. They are fixed by flange yoke ①, cross shaft ②, bearing ③, gasket ④ for adjusting axial clearance, and It is composed of elastic snap ring ⑤ for bearing ③ and so on. The cross shaft universal joint with this structure has the following disadvantages: (1) The elastic snap ring ⑤ takes up a lot of space A on the outer edge of the rotating body, which has a great influence on the reduction of the transmission torque capacity; (2) The gasket ④ is due to the Reserve clearance and work wear, so that the cross shaft ② will be offset and impacted at the center O point, especially not suitable for high-sp...

AI Technical Summary

Problems solved by technology

The cross shaft universal joint with this structure has the following disadvantages: (1) The elastic snap ring ⑤ takes up a lot of space A on the outer edge of the rotating body, which has a great influence on the reduction of the transmission torque capacity; (2) The gasket ④ is due to the Reserve clearance and work wear, so that the cross shaft ② will be offset and impacted at the center O point, especially not suitable for high-speed transmission

Due to the above shortcomings, the transmission capacity of the entire cross shaft universal joint cannot be improved, the transmission balance is poor, the service life is not long, and it is not suitable for high-speed transmission.

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