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Expansion bolt for crop rotation

A technology of expansion bolts and stubble, applied in the direction of connecting components, pins, mechanical equipment, etc., can solve the problem of different pulling resistance and other problems, and achieve the effect of large tensile force, strong fastening and convenient use.

Inactive Publication Date: 2012-05-16
JIANGSU ZHENYA SPECIAL SCREW
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the different materials used for the operation, such expansion bolts have different anti-pulling capabilities. No matter how long the bolt is, due to its own structure, it can only generate expansion force at the end part, and it is different from the direction of the force. In the stubble state, so the structure itself defines the tensile strength

Method used

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  • Expansion bolt for crop rotation
  • Expansion bolt for crop rotation

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Embodiment Construction

[0013] The following describes the present invention in further detail with reference to the accompanying drawings and embodiments, but does not constitute any limitation to the present invention:

[0014] according to figure 1 It can be seen that the stubble expansion bolt of the present invention includes a bolt body 1, a nut 2 and an expansion sleeve 3. The bolt body 1 has a truncated cone-shaped nail head 4 with a large end as its end. The outer diameter of the large end is larger than the inner diameter of the expansion sleeve 3. A truncated cone-shaped protrusion 6 sleeved on the bolt body 1 is provided between the nut 2 and the expansion sleeve 3, and the circular cone-shaped protrusion 6 The small end is inserted into the expansion sleeve, the outer diameter of the large end of the truncated cone-shaped protrusion 6 is larger than the inner diameter of the expansion sleeve 3, and the end of the expansion sleeve 3 close to the truncated cone-shaped nail head 4 There are o...

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Abstract

The invention discloses an expansion bolt for crop rotation. The expansion bolt comprises a bolt body, a nut and an expansion sleeve; the bolt body is provided with a truncated-cone-shaped pin head of which a large end is a tail end; the outer diameter of the large end of the truncated-cone-shaped pin head is greater than the inner diameter of the expansion sleeve; a truncated-cone-shaped bulge which is sleeved on the bolt body is arranged between the nut and the expansion sleeve; a small end of the truncated-cone-shaped bulge is inserted into the expansion sleeve; the outer diameter of the large end of the truncated-cone-shaped bulge is greater than the inner diameter of the expansion sleeve; one or more kerves passing through the expansion sleeve are formed at one end, close the truncated-cone-shaped pin head, of the expansion sleeve along the axial direction; and the expansion bolt has the advantages of high tightness, large tolerance to tension, and low cost, and is easy to manufacture and convenient to use.

Description

Technical field: [0001] The invention relates to the field of fasteners, in particular to a stubble expansion bolt with high tension. Background technique: [0002] An existing expansion bolt includes a bolt body with a head and a matching truncated cone nut and an expansion sleeve. The expansion sleeve has a plurality of longitudinal notches at one end close to the truncated cone nut. In other words, the expansion sleeve One end of the sleeve close to the truncated cone nut is divided into a plurality of expansion ribs, and the other end is still tubular. When in use, tighten the bolt head, and the truncated cone-shaped nut is pressed into the expansion sleeve from the small end to the large end, forcing the expansion ribs to expand and deform in a conical shape. The inner wall of the hole has a reaction to the expansion, so that the expansion bolt is firmly fixed to 孔内. Such expansion bolts have different tensile strength due to the different materials used for the operation. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B13/06
Inventor 杭汉林
Owner JIANGSU ZHENYA SPECIAL SCREW
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