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Fixed-torque gasket

A technology of constant torque and washer, applied in the direction of threaded fasteners, connecting components, screws, etc., can solve the problems of insufficient screwing of bolts and screwing standards, and achieve the effect of improving work efficiency, easy implementation and good effect.

Inactive Publication Date: 2015-05-06
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when using constant torque tools, sometimes the bolts will not be screwed in place. This method of determining the screwing effect by transmitting the bolt torque will inevitably lead to the situation that the screwing does not meet the standard.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: The first constant torque washer, see figure 1 and figure 2 , The middle parts of the upper washer 1 and the lower washer 2 are respectively provided with corresponding central holes 10 for passing through the mounting bolts. A plurality of symmetrical elastic bodies are distributed and fixed around the central hole 10 of the lower gasket 2 , such as V-shaped elastic pieces 3 . The upper end of each symmetrical elastic body is slidingly matched with the inner surface of the upper gasket 1; and a positioning mechanism for determining the distance between the upper gasket 1 and the lower gasket 2 is provided.

[0030] In this embodiment, the positioning mechanism is to respectively fix the scale 6 and the reference rod 7 on the inner surfaces of the two washers along the axial direction, and the side or end of the reference rod 7 is provided with a reference line corresponding to the marking line of the scale 6 . In order to prevent the upper washer 1 and...

Embodiment 2

[0033] Embodiment 2: The second constant torque washer, see figure 1 , figure 2 and image 3 , The middle parts of the upper washer 1 and the lower washer 2 are respectively provided with corresponding central holes 10 for passing through the mounting bolts. A plurality of V-shaped elastic pieces 3 are distributed and fixed around the central hole 10 of the lower gasket 2 . The corners of the V-shaped shrapnel 3 are fixed on the inner surface of the lower gasket 2 by rivets or welding spots 4, and the upper ends of the V-shaped shrapnel 3 are respectively provided with sliding feet 5 . The inner surface of the upper gasket 1 is provided with chutes 9 corresponding to the number and corresponding positions of the V-shaped shrapnel 3. Each chute 9 is arranged around the center hole 10 of the upper washer 1. respectively located in the chute 9, and sliding fit.

[0034] The combination of the chute 9 and the sliding foot 5 can not only prevent the relative rotation of the up...

Embodiment 3

[0036] Embodiment 3: The third constant torque washer, see figure 1 , figure 2 and Figure 4 , The middle parts of the upper washer 1 and the lower washer 2 are respectively provided with corresponding central holes 10 for passing through the mounting bolts. A plurality of V-shaped elastic pieces 3 are distributed and fixed around the central hole 10 of the lower gasket 2 . The corners of the V-shaped shrapnel 3 are fixed on the inner surface of the lower gasket 2 by rivets or welding spots 4, and the upper ends of the V-shaped shrapnel 3 are respectively provided with sliding feet 5 . The inner surface of the upper gasket 1 is provided with chutes corresponding to the number and positions of the V-shaped shrapnel 3, and the chute intervals are misplaced: the adjacent chute is divided into an outer layer chute 9a and an inner layer chute 9b, adjacent The center of the chute is not on the same circumferential surface, and the sliding feet 5 on the upper ends of each V-shape...

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Abstract

The invention discloses a fixed-torque gasket. The fixed-torque gasket comprises an upper gasket and a lower gasket, wherein a plurality of symmetrical elastic bodies are fixedly distributed around the center hole of the lower gasket; the upper end of each symmetrical elastic body is in sliding fit with the inner surface of the upper gasket; a positioning mechanism for determining the distance between the two gaskets is arranged between the upper gasket and the lower gasket. The distance between the upper gasket and the lower gasket can be determined through the positioning mechanism, and the elastic compression amount between the upper gasket and the lower gasket can be determined after the determination of the distance, so that the aim of assembling under a specific torque condition is fulfilled. The fixed-torque gasket is reasonable in structural design, is easy to implement, is particularly suitable for fixed-torque bolt installation in narrow regions with a very good effect, and is suitable for popularization and application. The current compulsory fixed-torque tool can be replaced after the fixed-torque gasket is put into use, and the working cost is reduced; the additional workload is relieved, and the working efficiency is increased.

Description

technical field [0001] The invention relates to the technical field of bolt washers, in particular to an elastic washer capable of fixing torque or quantifying torque. Background technique [0002] In many fields such as machining or coal machinery, it is quite common for bolts to use elastic washers. The elastic washer can exert outward tension on the hat end of the bolt, thereby preventing the bolt from loosening. However, in the process of fixing the bolts by rotation, it is difficult to grasp the fixing depth of the bolts, which will lead to inconsistent tension of the elastic washers and deteriorate the fixing performance of the equipment. For many mechanical assemblies, the pressure between the bolt and the elastic washer should be fixed in a specific range, not too large or too small. The current tool used to achieve a specific pressure range for the elastic washer is to use a constant torque tool, such as a constant torque wrench. Constant torque tools are bulky, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/26
CPCF16B39/26
Inventor 李辉
Owner HENAN POLYTECHNIC UNIV
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