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Loosing-prevention bolt component with disassembling being controlled by preset torque

An anti-loosening bolt, preset torque technology, applied in the direction of bolts, threaded fasteners, connectors with special improvement in tensile load, etc. and other problems, to achieve the effect of good sealing, high safety and simple structure

Active Publication Date: 2019-09-20
广西国力新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the bolt components that are reliable and easy to disassemble mainly include Japanese hard lock nuts that are said to never loosen and Chinese Tang nuts, but these two kinds of nuts also have shortcomings. Eccentric concave nuts, especially "different eccentricities for different sizes and materials", are extremely difficult to manufacture and expensive; Down nuts are composed of left-handed nuts and right-handed nuts, combined with "double rotation, discontinuous, The screw with "variable cross-section" thread is used together, the thread structure is complex and the cost is still high, and there are still defects that the strength of the thread is weakened due to a large reduction in the force-bearing area and it cannot be compatible with other bolt assemblies; and these two bolt assemblies are double Nut structure, two nuts need to be screwed in one operation, which is labor-intensive and inefficient

Method used

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  • Loosing-prevention bolt component with disassembling being controlled by preset torque
  • Loosing-prevention bolt component with disassembling being controlled by preset torque
  • Loosing-prevention bolt component with disassembling being controlled by preset torque

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Such as figure 1 , figure 2 , image 3 and Figure 7 As shown, an anti-loosening bolt assembly with preset torque control disassembly includes a bolt 11 , a nut 21 , and a stop washer 31 that cooperate with each other. The bolt 11 includes a nut 1101 and a screw rod 1102. The screw rod 1102 is provided with an axial groove 1103 along the axial direction; The nut 21 is provided with a radial annular flange 2101 at one end close to the fastened part; the outer diameter of the annular flange 2101 is greater than the outer diameter of the nut 21; an annular groove 2102 is provided at the annular intermediate position of the end surface where the annular flange 2101 is located ; The bottom surface of the annular groove 2102 is provided with ratchet structures 2103 arranged radially and evenly. The stop washer 31 is annular, and the outer diameter of the stop washer 31 is greater than the outer diameter of the annular flange 2101; the inner hole of the stop washer 31 is ...

Embodiment 2

[0054] Such as Figure 4 , Figure 5 and Figure 8As shown, a anti-loosening bolt assembly with preset torque control dismounting includes a bolt 12 , a nut 22 , and a stop washer 32 that cooperate with each other. The nut 1201 of the bolt 12 is provided with a radial annular flange 1202 near one end of the fastened part 41; the outer diameter of the annular flange 1202 is greater than the outer diameter of the nut 1201; the annular flange 1202 is provided with a The annular groove 1203 and the ratchet structure 1204 are the same as the annular groove 2102 and the ratchet structure 2103 in Embodiment 1; the screw rod of the bolt 12 is not provided with an axial groove. The nut 22 is an ordinary nut matched with the bolt 12 . The stop washer 32 is annular, and the outer diameter of the stop washer 32 is greater than the outer diameter of the annular flange 1202; the stop washer 32 is basically the same as the stop washer 31 in Embodiment 1, and the difference is that the sto...

Embodiment 3

[0056] Such as Figure 4 , Image 6 and Figure 9 As shown, a anti-loosening bolt assembly with preset torque control disassembly includes a bolt 12 , a nut 22 , and a stop washer 33 that cooperate with each other. This embodiment is basically the same as Embodiment 2, except that the stop washer 33 of this embodiment replaces the stop washer 32 of Embodiment 2. The stop washer 33 is also basically the same as the stop washer 32, the difference is: the stop washer 33 is not provided with a rectangular gap, instead the rectangular orifice 3301 is placed in the middle of the ring body from the stop washer 33 inner hole; The lateral inner edge of the opening 3301 is provided with a vertical protrusion 3302 that is bent towards the fastener 43; the top of the vertical protrusion 3302 is set as a tip 3303, and the tip 3303 is located at the center point of the section of the vertical protrusion 3302; the vertical protrusion 3302 A prefabricated notch 3304 is provided at the join...

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Abstract

The invention discloses a loosing-prevention bolt component with disassembling being controlled by preset torque. The loosing-prevention bolt component comprises a nut, a bolt and a moving-stopping gasket which are matched with each other, wherein the nut is provided with ratchet structures, the bolt is provided with an axial groove, the moving-stopping gasket is provided with elastic pawls matched with the ratchet structures and a horizontal protrusion matched with the axial groove, and the horizontal protrusion is provided with a prefabricated nick. According to the loosing-prevention bolt component with the disassembling being controlled by the preset torque, by means of a matching manner that the number of ratchets of the ratchet structures differs by one from the number of the elastic pawls, the nut can be engaged and locked only needing a minimal rotating angle; the preset torque of the prefabricated nick can be set according to safety factors required by loosing prevention, the bolt component can perform the loosing prevention according to actual requirements and the required loosing-prevention accuracy, and the bolt loosing problem can be prevented and controlled; and when the unscrewing torque is larger than the preset torque, the nut can be disassembled.

Description

technical field [0001] The invention relates to the technical field of connecting fasteners, and more specifically, the invention relates to an anti-loosening bolt assembly which is disassembled under preset torque control. Background technique [0002] In the fields of transportation, industrial manufacturing, construction engineering, and mineral mining, many equipment and facilities operate at high speed for a long time, resulting in strong and continuous vibration. If the bolt components used for structural connection and fastening are loose and fall off, Serious safety accidents are prone to occur; this requires that the bolt assembly has a reliable anti-loosening function, and at the same time, it is easy to disassemble, so as to facilitate the maintenance and upgrading of these equipment and facilities. At present, the bolt components that are reliable and easy to disassemble mainly include Japanese hard lock nuts that are said to never loosen and Chinese Tang nuts, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/24F16B39/282
CPCF16B39/24F16B39/282F16B31/02
Inventor 龚作钰
Owner 广西国力新材料技术有限公司
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