Title:
CONTRACTION CONNECTION ASSEMBLY, CONTRACTION CONNECTION STRUCTURE AND CONNECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2016/019915
Kind Code:
A1
Abstract:
A contraction connection assembly, a contraction connection structure and a connection method. The contraction connection structure comprises a contraction connection assembly, and more than one connected pieces. The contraction connection assembly comprises a connection core rod, a contraction sleeve made up of more than two contraction pieces encircling the connection core rod, a sleeve used for driving the contraction sleeve to contract, and a limiting mechanism preventing the sleeve and the contraction sleeve from loosening when the contraction sleeve is in a fully contracted state. A contraction piece holding portion holding the contraction sleeve in the axial direction is provided on the connection core rod. A positioning holding portion is provided on the outer periphery of an end portion of one end of the connection core rod. The contraction pieces comprise wedge-shaped holding grooves, and tapered surfaces for contraction. A contraction sleeve accommodating space is provided in the sleeve, and a driving tapered surface is provided on a wall of the contraction sleeve accommodating space. The advantages of the present invention are that a connection will not fail even in adverse situations such as those having an especially large load, in particular an especially large axial load, especially heavy vibrations, a high temperature, or alternating variations between high and low temperatures, the connection is highly reliable, and the use of bolts and nuts may be replaced.
Inventors:
YANG DONGZUO (CN)
Application Number:
PCT/CN2015/086415
Publication Date:
February 11, 2016
Filing Date:
August 07, 2015
Export Citation:
Assignee:
YANG DONGZUO (CN)
International Classes:
F16B39/28
Foreign References:
| EP0325069A1 | 1989-07-26 | |||
| CN1179846A | 1998-04-22 | |||
| CN201521517U | 2010-07-07 | |||
| JP2001271819A | 2001-10-05 | |||
| JP2011132966A | 2011-07-07 | |||
| US5902085A | 1999-05-11 |
Download PDF: