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A fixed expansion tie rod

A technology of tie rods and fixing frames, which is applied to expansion compensation devices for pipelines, pipes/pipe joints/fittings, mechanical equipment, etc. It can solve the problems of uneven force on expansion rods and unstable external connections, etc., and achieve simple structure , Reasonable design, anti-displacement effect

Active Publication Date: 2017-10-31
常熟市亿能机械有限公司
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AI Technical Summary

Problems solved by technology

[0003] The technical problem mainly solved by the present invention is to provide a fixed expansion tie rod, which has a reasonable design and a simple structure, and solves the problems of uneven stress and unstable external connection of the expansion tie rod in the process of equalizing stress

Method used

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  • A fixed expansion tie rod

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Embodiment Construction

[0010] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0011] Please refer to the attached figure 1 , the embodiment of the present invention includes:

[0012] A fixed expansion tie rod, comprising a tie rod core 1, a tie rod sleeve 2 and a transition sleeve 3; the axis of the tie rod sleeve is provided with a central axis hole for installing the tie rod core 1; the central axis hole is separated by a layer 4 is divided into a matching chamber and a guide chamber 5; the tie rod core is installed in the central shaft hole; one end of the tie rod core 1 is fitted with the transition sleeve 3; the transition sleeve 3 is an interference fit It is installed in the matching cavity by way of installation;...

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Abstract

The invention provides a fixed type expansion pull rod. The fixed type expansion pull rod comprises a pull rod core, a pull rod sleeve and a transition sleeve. A central axis hole for installing the pull rod core is formed in the axis of the pull rod sleeve. The central axis hole is divided into a matching cavity and a guiding cavity through a partition layer. The pull rod core is arranged in the central axis hole. One end of the pull rod core is sleeved with the transition sleeve. The transition sleeve is arranged in the matching cavity in an interference fit mode. A limiting nut is arranged at the end, outside the transition sleeve, of the pull rod core. A positioning hole used for the butt joint is formed in the bottom end of the pull rod sleeve. A butt joint groove used for clamping connection is formed in the upper end of the pull rod sleeve. The pull rod sleeve is sleeved with a fixing frame which is connected into the butt joint groove in a clamping mode. Bolts used for fixation are arranged on the fixing frame.

Description

technical field [0001] The invention relates to the field of hardware accessories, in particular to a fixed expansion tie rod. Background technique [0002] The expansion joint is a flexible structure arranged on the container shell or pipeline to compensate for the additional stress caused by temperature difference or mechanical vibration. As an elastic compensation element that can expand freely, it has the advantages of reliable operation, good performance and compact structure, and has been widely used in chemical industry, metallurgy, nuclear energy and other departments. However, in the cement industry, especially the expansion joint used on the cement kiln preheater, it needs to have the characteristics of high temperature resistance, small axial installation size and large axial expansion. At present, the expansion joints commonly used in the market are basically Ω-shaped metal bellows structures with wavelet height and small wave pitch. This type of expansion join...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L51/00
CPCF16L51/00
Inventor 吴永华
Owner 常熟市亿能机械有限公司
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