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Bolt and nut connecting structure for dumbbell-like shaped symmetrical two-way tapered threads

A technology of tapered thread and connection structure, applied in the direction of connection components, nuts, bolts, etc., can solve the problems of poor self-locking, poor compatibility, and low connection strength.

Pending Publication Date: 2019-06-21
AMICUS VERITATIS MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the existing threads have problems such as low connection strength, weak self-positioning ability, poor self-locking performance, small load-bearing value, poor stability, poor compatibility, poor reusability, high temperature and low temperature, etc. Typical bolts or nuts using modern thread technology There are common defects that are easy to loose. With the frequent vibration or vibration of the equipment, the bolts and nuts will loosen or even fall off, and serious safety accidents will easily occur.

Method used

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  • Bolt and nut connecting structure for dumbbell-like shaped symmetrical two-way tapered threads
  • Bolt and nut connecting structure for dumbbell-like shaped symmetrical two-way tapered threads
  • Bolt and nut connecting structure for dumbbell-like shaped symmetrical two-way tapered threads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as figure 1 , figure 2 , image 3 As shown, the present embodiment adopts a bolt-to-double-nut connection structure, and the conical thread connection pair 10 of the bolt-to-nut connection structure of the bidirectional tapered thread includes a bidirectional frustum of cone 71 that is spirally distributed on the outer surface of the columnar matrix 3 and the bidirectional tapered hole 41 that is spirally distributed on the inner surface of the cylindrical mother body 2, that is, includes the external thread 9 and the internal thread 6 that are threaded with each other, and the internal thread 6 is distributed with a spiral bidirectional tapered hole 41 and The form of "non-solid space" exists, and the distribution of the external thread 9 is a helical bidirectional frustum of cone 71 and exists in the form of "material entity". The internal thread 6 and the external thread 9 are the relationship between the containing part and the contained part: internal The ...

Embodiment 2

[0073] Such as Figure 4 As shown, the structure, principle and implementation steps of this embodiment are similar to those of Embodiment 1, the difference is that this embodiment adopts a bolt-to-single-nut connection structure and the bolt body has a hexagonal head larger than the screw body 31, when The hexagonal head of the bolt is on the left side, and the cylindrical parent body 2, that is, the nut body 21, that is, the single nut is located on the right side of the workpiece 130 to be fastened. The relationship between 130 is also a rigid connection, and the rigid connection refers to that the end surface of the nut body 21 and the end surface of the workpiece 130 are mutually bearing surfaces, and the bearing surface is the locking bearing surface 111, and the workpiece 130 is Refers to the connected objects including the workpiece 130 .

[0074] The threaded work supporting surface of the present embodiment is a tapered threaded supporting surface 122, that is, the ...

Embodiment 3

[0077] Such as Figure 5 As shown, the structure, principle and implementation steps of this embodiment are similar to the first embodiment, the difference is that the positional relationship between the double nut and the fastened workpiece 130 is different, and the double nut includes a nut body 21 and a nut body 22 And the bolt body has a hexagonal head larger than the screw body 31. When the hexagonal head of the bolt is on the left side, the nut body 21 and the nut body 22 are all located on the right side of the fastened workpiece 130. The bolt and double nut connection structure of this embodiment During work, the relationship between the nut body 21, the nut body 22 and the fastened workpiece 130 is a non-rigid connection, and the non-rigid connection refers to that the opposite side faces of the two nuts, namely the nut body 21 and the nut body 22, support each other. The support surface includes a locking support surface 111 and a locking support surface 112, which a...

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Abstract

The invention belongs to the equipment general technical field, and relates to a bolt and nut connecting structure for dumbbell-like shaped symmetrical two-way tapered threads, which solves the problems that existing threads are poor in self-positioning property and self-locking property, and the like. The bolt and nut connecting structure is characterized in that inner threads (6) are two-way tapered holes (41) (non-solid space) in the inner surface of a barrel-shaped mother body (2), outer threads (9) are two-way conical table bodies (71) (material solids) on the outer surface of a column-shaped mother body (3), and integrated unit threads are dumbbell-like shaped (94) two-way tapers which are the same with and / or are approximately same with left-side taper (95) and right-side taper (96), are spiral, are small in middle, and are big in two ends; and performances mainly depend on a conical surface and a taper size of a threaded body. The bolt and nut connecting structure has the advantages that: inner and outer threads define conical pairs through the two-way tapered holes (41) and the two-way conical table body (71) until inner and outer cones are spiral conical surfaces, and arein sizing fit or sizing interference fit to realize a thread connecting function.

Description

technical field [0001] The invention belongs to the general technical field of equipment, and in particular relates to a bolt-nut connection structure with dumbbell-shaped symmetrical bidirectional tapered threads (hereinafter referred to as "bolts and nuts with bidirectional tapered threads"). Background technique [0002] The invention of thread has a profound impact on the progress of human society. Thread is one of the most basic industrial technologies. It is not a specific product, but a key common technology in the industry. Its technical performance must be reflected by specific products as application carriers, and it is widely used in various industries. The existing thread technology has a high level of standardization, mature technical theory, and long-term practical application. It is used for fastening, which is fastening thread; used for sealing, it is sealing thread; used for transmission, it is transmission thread. According to the national standard thread ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B33/02F16B39/30
CPCF16B33/02F16B39/30F16B5/02F16B35/041F16B39/16
Inventor 不公告发明人
Owner AMICUS VERITATIS MACHINERY
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