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Automatic gap compensating bolt

A gap and bolt technology, which is applied in the field of gap self-compensating bolts, can solve problems such as easy aging of components, easy deformation of fastening surfaces, and safety accidents, so as to improve stability and safety, realize secondary fastening, and structure simple effect

Active Publication Date: 2014-07-23
HUNAN GOLDWELL NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the bolt fastening method is mostly directly connected to the fastening surface, or a nylon washer is placed under the bolt. When the fastening surface is easily deformed, there will be a gap between the bolt and the fastening surface, and the bolt will easily loosen and fall off, resulting in a major safety accident.
The nylon washer placed under the bolt will make the fastening surface of the bolt evenly stressed after the bolt is tightened, and the force area will increase, and the nylon washer has excellent insulation, corrosion resistance, heat insulation and non-magnetic properties, and is light in weight. Advantages, but because nylon gaskets face large temperature changes (such as affected by fire), they are more prone to aging than other components. When nylon gaskets age and fail, gaps will occur between the bolts and the fastening surface, and the bolts will loosen, such as If the gap is not eliminated, the entire connection may fail due to the loosening of the bolts, resulting in a major safety accident

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Figure 1 to Figure 6 It shows the first embodiment of the gap self-compensating bolt of the present invention. The bolt includes a nut 1 and a screw rod 2. After the screw rod 2 is screwed to the fastening surface, the nut 1 will directly press the fastening surface to achieve tightness. Solid connection, its structure is simple, easy to install, and a stroke chamber 11 is provided in the nut 1, the stroke chamber 11 is equipped with an elastic compensating device 3, that is, in the installed state, the elastic compensating device 3 will be in the stroke chamber 11 due to itself Internal deformation is generated to form a pre-release force. When there is a gap between the nut 1 and the fastening surface, the elastic compensating device 3 will restore the deformation and move to the fastening surface, and make up the gap between the nut 1 and the fastening surface , to ensure that the bolt structure will not loosen, realize the secondary fastening effect, and greatly im...

Embodiment 2

[0072] Figure 7 to Figure 14 It shows the second embodiment of the gap self-compensating bolt of the present invention. The bolt is basically the same as that of Embodiment 1, the only difference being that the screw rod 2 is provided with a heat insulating member 4, which can act as a bridge breaker. Thermal effect, its structure is simple, easy to install, one end of the elastic compensating device 3 is offset against the nut 1, and the other end is offset against the heat insulating element 4, that is, when the installed state, the elastic compensating device 3 will be in the stroke cavity 11 due to itself Deformation is generated to form a pre-release force. When the heat insulating part 4 fails and disappears, there will be a gap between the bolt structure and the fastening surface. The gap between the cap 1 and the fastening surface ensures that the bolt structure will not loosen, realizes the secondary fastening effect, and greatly improves the stability and safety of ...

Embodiment 3

[0082] Figure 15 to Figure 22It shows the third embodiment of the gap self-compensating bolt of the present invention, which is basically the same as that of Embodiment 1, the only difference is that the driving part 31 includes a driving spring 311, the compensating part 32 is an elastic snap ring, and the driving spring 311 is set on the On the screw 2, one end of the driving spring 311 is offset against the nut 1, and the other end is offset against the compensating piece 32. The screw 2 is provided with an anti-retraction boss 21, which is flush with the bottom end of the nut 1, and the compensating piece 32 It is sandwiched between the anti-retraction boss 21 and the heat insulator 4 and tightened around the periphery of the screw rod 2. The anti-retraction boss 21 is offset against the elastic snap ring to prevent the elastic snap ring from retreating when it is installed. Its structure Simple and reliable, the screw rod 2 is provided with at least two stages of feeding...

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Abstract

The invention discloses an automatic gap compensating bolt which comprises a screw cap and a screw rod. A travel cavity is formed in the screw cap, an elastic compensating device is arranged in the travel cavity, and when a gap is generated between the screw cap and a fastening face, the elastic compensating device can move towards the fastening face and compensates the gap between the screw cap and the fastening face. The automatic gap compensating bolt has the advantages of being simple in structure, convenient to mount and capable of achieving automatic gap compensating.

Description

technical field [0001] The invention mainly relates to fastener connection technology, in particular to a gap self-compensating bolt. Background technique [0002] Bolts, generally belonging to general-purpose fastener products, are widely used in various fields such as machinery, vehicles, equipment, electronics, etc. It is the basic requirement for bolts not to loosen or fall off accidentally in the structure. [0003] In the prior art, the fastening methods of bolts are mostly directly connected to the fastening surface, or nylon washers are placed under the bolts. When the fastening surface is easily deformed, there will be a gap between the bolt and the fastening surface, and the bolt will easily loosen and fall off, resulting in a major safety accident. The nylon washer placed under the bolt will make the fastening surface of the bolt evenly stressed after the bolt is tightened, and the force area will increase, and the nylon washer has excellent insulation, corrosion...

Claims

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Application Information

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IPC IPC(8): F16B35/06F16B39/284
Inventor 谢斌泉
Owner HUNAN GOLDWELL NEW MATERIALS TECH CO LTD
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