CN218445064U - Be applicable to pipe joint nut coefficient of friction testing arrangement - Google Patents
Be applicable to pipe joint nut coefficient of friction testing arrangement Download PDFInfo
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- CN218445064U CN218445064U CN202222060863.0U CN202222060863U CN218445064U CN 218445064 U CN218445064 U CN 218445064U CN 202222060863 U CN202222060863 U CN 202222060863U CN 218445064 U CN218445064 U CN 218445064U
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- pipe joint
- joint nut
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Abstract
The utility model relates to a friction coefficient testing device suitable for a pipe joint nut, which is matched with a suitable metal pipe and matched with an opponent piece for use; the first contact position is that the inner bottom surface of the pipe joint nut is contacted with the rear plane of the metal pipe, and the second contact position is that the inner thread part of the pipe joint nut is contacted with the outer thread part of the opponent. The utility model has the advantages that: for the current standard fastener test method, through the test structure and the design of the hand piece, the friction coefficient of the pipe joint nut in the actual use process can be directly measured, and test support is provided for the process research and new product development of the pipe joint nut.
Description
Technical Field
The utility model belongs to the technical field of the coefficient of friction test technique and specifically relates to a be applicable to pipe joint nut coefficient of friction testing arrangement.
Background
In the technical indexes of various fasteners, the friction coefficient is used as one of important parameters to determine the sealing performance and the use condition of the fasteners; while there are well-defined test standards and standardized test equipment for the coefficient of friction of standard fasteners. For a pipe joint nut in the fastener, because a metal pipe needs to be matched with a hand piece for use, the use state and the contact form of the pipe joint nut are different from those of a standard nut; therefore, the friction coefficient testing method for the pipe joint nut has no clear standard, but a unified method is lacked for evaluating different coating states of the contact surface of the pipe joint nut, so that the process research and the subject development of the pipe joint nut are not facilitated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide one kind and be applicable to pipe joint nut coefficient of friction testing arrangement. The utility model provides a pipe joint nut's contact surface coefficient of friction test method, through experimental state under the true assembly state of simulation, test exit pipe joint nut's total coefficient of friction. The pipe joint nut has two places on the contact surface in the use: one part is the contact of the thread part and the opponent part, and the other part is the contact of the inner bottom surface of the pipe joint nut and the back head surface of the metal pipe.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a be applicable to pipe joint nut coefficient of friction testing arrangement, includes experimental gasket and experimental opponent's piece, and experimental opponent's piece is connected fixedly with experimental gasket.
The inner bottom surface of the pipe joint nut is contacted with the front end surface of the test opponent piece to form a first test friction position.
The union nut is connected with the threaded part of the test hand piece to form a second test friction position.
The front end surface of the pipe joint nut is contacted with the test gasket to form a third friction position.
Pipe joint nut coefficient of friction testing arrangement through fixed test gasket and experimental adversary piece, installs pipe joint nut and experimental adversary piece and experimental gasket and matches, and then drives pipe joint nut and rotates, and three contact position all can produce the friction, according to axial force and the corresponding moment of torsion that produces between pipe joint nut and the experimental adversary piece to the coefficient of friction of pipe joint nut is reachd in the experiment.
The pipe joint nut is matched with a proper metal pipe and matched with an opponent part for use; the first contact position is that the inner bottom surface of the pipe joint nut is contacted with the rear plane of the metal pipe, and the second contact position is that the inner thread part of the pipe joint nut is contacted with the outer thread part of the opponent.
Compared with the prior art, the utility model has the positive effects that:
for the current standard fastener test method, through the test structure and the design of the hand piece, the friction coefficient of the pipe joint nut in the actual use process can be directly measured, and test support is provided for the process research and new product development of the pipe joint nut.
Drawings
FIG. 1 is a schematic structural diagram of the present application;
FIG. 2 is a schematic workflow diagram of the present application;
FIG. 3 is a diagram illustrating an example of a pipe union nut thread friction coefficient test assembly.
Detailed Description
The following provides the utility model relates to a concrete implementation mode suitable for pipe joint nut coefficient of friction testing arrangement.
Example 1
Referring to the attached drawings, the friction coefficient testing device suitable for the pipe joint nut comprises a testing gasket and a testing opponent, wherein the testing opponent is connected and fixed with the testing gasket, the inner bottom surface of the pipe joint nut is in contact with the front end surface of the testing opponent to form a first testing friction position, the pipe joint nut is connected with the threaded part of the testing opponent to form a second testing friction position, and the front end surface of the pipe joint nut is in contact with the testing gasket to form a third friction position;
the work flow of the application is as follows: fixing the test counterpart piece and the test gasket, then matching the pipe joint nut to the test counterpart piece, further driving the pipe joint nut to rotate, enabling the pipe joint nut and the test counterpart piece to generate axial force, and calculating to obtain a pipe joint nut thread friction coefficient.
The specific detailed test process is as follows:
the method is carried out according to the test requirements in the national standard GB/T16823.3-2010 fastener torque-clamping force test, and the test is carried out on a standard friction coefficient testing machine.
(1) The pipe clamp nut, the test opponent part and the test gasket all meet the requirements in the national standard;
(2) And the total friction coefficient mu tot-end surface friction coefficient mu b = the total friction coefficient mu of the contact surface of the pipe joint nut, which is measured in a standard friction coefficient testing machine.
First test friction position: the contact position of the inner bottom surface of the pipe joint nut and the front end surface of a test opponent is determined; second test friction position: the contact position of the internal thread of the pipe joint nut and the external thread of the test counterpart piece; third test rubbing position: the contact position of the front end surface of the pipe joint nut and the test surface of the test gasket.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the concept of the present invention, and these modifications and decorations should also be considered as within the protection scope of the present invention.
Claims (4)
1. The utility model provides a be applicable to pipe joint nut coefficient of friction testing arrangement which characterized in that, includes experimental gasket and experimental opponent spare, and experimental opponent spare is connected fixedly with experimental gasket.
2. The apparatus for testing a coefficient of friction of a union nut of claim 1, wherein the inner bottom surface of the union nut is brought into contact with a front end surface of a trial counterpart member to form a first trial friction position.
3. A friction coefficient testing device for a union nut according to claim 1, wherein the union nut is coupled with the threaded portion of the trial hand piece to form the second trial friction position.
4. A friction coefficient testing device for a union nut according to claim 1, wherein the front end surface of the union nut comes into contact with the test pad to form a third test friction position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222060863.0U CN218445064U (en) | 2022-08-07 | 2022-08-07 | Be applicable to pipe joint nut coefficient of friction testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222060863.0U CN218445064U (en) | 2022-08-07 | 2022-08-07 | Be applicable to pipe joint nut coefficient of friction testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218445064U true CN218445064U (en) | 2023-02-03 |
Family
ID=85092694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222060863.0U Active CN218445064U (en) | 2022-08-07 | 2022-08-07 | Be applicable to pipe joint nut coefficient of friction testing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218445064U (en) |
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2022
- 2022-08-07 CN CN202222060863.0U patent/CN218445064U/en active Active
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