Pushing tension device

A tensioning device and pushing technology, applied in the direction of threaded fasteners, locking fasteners, connecting components, etc., can solve the problems of thread seizure, safety hazards, expensive equipment, etc., to prevent thread seizure and prolong Longevity and fastening time saving effect

Inactive Publication Date: 2012-08-15
常州轩达液压机电设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods not only have poor precision, time-consuming, expensive equipment, and potential safety hazards, but also often have the phenomenon of thread seizure (metal adhesion)

Method used

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Embodiment Construction

[0017] 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.

[0018] see figure 1 with figure 2 , the embodiment of the present invention includes:

[0019] A jacking tensioning device, comprising a cylindrical nut body 1, a gasket 2 is arranged at the bottom of the nut body 1, a round hole 5 is opened in the middle of the gasket 2, and a hole 5 is opened in the middle of the nut body 1 through the nut body 1. The central hole 3, the inner wall of the central hole 3 is provided with an internal thread, the circular hole 5 is set correspondingly to the central hole 3, a number of through holes are uniformly arranged around the central hole 3, and a push bolt is connected in the through hole 4. The bottom ...

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PUM

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Abstract

The invention discloses a pushing tension device which comprises a cylindrical nut body, wherein the bottom of the nut body is provided with a gasket, the middle of the gasket is provided with a round hole, the middle of the nut body is provided with a central hole penetrating through the nut body, the inner wall of the central hole is provided with an internal thread, the round hole and the central hole are correspondingly arranged, a plurality of through holes are uniformly formed around the central hole, a pushing bolt is connected in the through hole, and the bottom of the pushing bolt is pressed against the gasket. The pushing tension device disclosed by the invention has higher mechanical efficiency and can generates powerful pre-stressing force between connecting components, therefore, the pushing tension device is good in fastening effect and persistent in fastening, saves the fastening time and greatly improves the operating efficiency.

Description

technical field [0001] The invention relates to a push tensioning device. Background technique [0002] The purpose of bolt tightening is to produce a precise, durable preload that is greater than the load. As long as the pre-tightening force is greater than the load, there will be no problem in the bolted connection, but if the pre-tightening force is too large, it will also cause damage to the connecting parts, that is, the bolt body. It is difficult to achieve accurate pre-tightening force, especially for large-diameter bolt fastening. In general, torque boosters are required to properly tighten bolts larger than 1 inch in diameter. Traditional fastening methods include hammering, heating, hydraulic wrench, hydraulic tensioner, etc. These methods not only have poor precision, time-consuming, expensive equipment, and potential safety hazards, but also often have the phenomenon of thread seizure (metal adhesion). Contents of the invention [0003] The technical proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B37/00F16B39/02F16B43/00
Inventor 徐冰
Owner 常州轩达液压机电设备有限公司
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