Constant-pressure threaded connection device

Abstract

The invention provides a constant-pressure threaded connection device, belongs to the field of high-performance functional components, and solves the problem of failing to ensure the constancy of thescrewing strength in an existing threaded connection device. The constant-pressure threaded connection device comprises a main connection part and an auxiliary connection part which are connected in athreaded mode, wherein the outer wall of the main connection part is coaxially provided with a constant-pressure groove, the constant-pressure groove is movably sleeved with a constant-pressure sleeve, and one end of the constant-pressure sleeve and the groove wall of one end of the constant-pressure groove are provided with unidirectional saw teeth. The constant-pressure groove is internally sleeved with a reset spring, wherein the two ends of the reset spring abuts against one end of the constant-pressure sleeve and the groove wall of the other end of the constant-pressure groove. The outerwall of the constant-pressure sleeve is provided with a plurality of aligning strips which are parallel to the axis of constant-pressure sleeve. The constant-pressure threaded connection device further comprises an adjusting sleeve which sleeves the outer wall of the main connection part, wherein the inner wall of the adjusting sleeve is of a circular sleeve and covers the constant-pressure groove. The adjusting sleeve can rotate around the axis of the main connection part, and the inner wall of the adjusting sleeve is provided with a plurality of aligning grooves which are parallel to the axis of the adjusting sleeve, wherein the aligning strips are movably located in the aligning grooves. The constant-pressure threaded connection device is not affected by operators and the constancy ofthe screwing strength can always be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of high-performance functional components, and relates to a constant pressure screw connection device. Background technique [0002] Threaded connection is a connection method widely used in machinery. It can be used as a fastener to fix mechanical devices; it can also be used to connect pipe fittings to seal the connection part; but the screw connection strength of threaded connection is directly affected by the operator. , which leads to the following problems: [0003] When used as a fastener, the operator does not know the final tightening position, so the site construction standards are not uniform, and when the surface of the same device needs to be connected by multiple fasteners, the bolting strength of each fastener is different, which will lead to A slight deformation on the surface of the device will directly affect the stability of the device; [0004] When used as a connecting pipe fitting, th...

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Problems solved by technology

[0003] When used as a fastener, the operator does not know the final tightening position, so the site construction standards are not uniform, and when the surface of the same device needs to be connected by multiple fasteners, the bolting strength of each fastener is different, which will lead to A slight deformation on the surface of the device will directly affect the stability of the device;

[0004] When used as a connecting pipe fitting, the screw connection strength is insufficient and the seal is not compressed enough, which will affect the sealing performance. If the screw connection strength is too high, the seal will be damaged. Therefore, the best sealing can only be achieved with a suitable screw connection strength. effect and improve seal life

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