CN219957294U - Friction coefficient testing device - Google Patents
Friction coefficient testing device Download PDFInfo
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- CN219957294U CN219957294U CN202320789777.5U CN202320789777U CN219957294U CN 219957294 U CN219957294 U CN 219957294U CN 202320789777 U CN202320789777 U CN 202320789777U CN 219957294 U CN219957294 U CN 219957294U
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- cover plate
- friction coefficient
- hole
- embedded support
- composite sensor
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- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 239000002131 composite material Substances 0.000 claims abstract description 39
- 230000000149 penetrating effect Effects 0.000 claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The utility model provides a friction coefficient testing device, which comprises a cover plate, wherein the bottom end of the cover plate is uniformly and circumferentially provided with a plurality of connecting supports, the inner sides of the bottom ends of the connecting supports are fixedly connected with a composite sensor together, the top end of the composite sensor is connected with the bottom end of an embedded support, the top end of the embedded support is connected with a bottom hole gasket, and an inverted cone groove is formed in the bottom hole gasket; the cover plate is vertically provided with a through hole penetrating through the cover plate, a sleeve is arranged at the upper side of the cover plate corresponding to the through hole, and a threaded hole gasket is arranged at the lower side of the cover plate corresponding to the through hole. In the structure of the utility model, the composite sensor is arranged and simultaneously monitors the pressure and friction torque generated by the threaded pipe joint during connection, and the total friction coefficient, the thread friction coefficient and the friction coefficient of the supporting surface of the threaded pipe joint can be calculated by matching with the total torque generated by monitoring and driving the sleeve to rotate by the tightening tool, so that the friction coefficient test of the threaded pipe joint is completed.
Description
Technical Field
The utility model belongs to the technical field of mechanical testing, and particularly relates to a friction coefficient testing device.
Background
The existing bolt friction coefficient testing device pulls the compound sensor through pretightening force between bolts and nuts to measure the axial force of the bolts during testing, the structural form of the threaded pipe joint is different from that of standard bolt connection, the threaded pipe joint is screwed onto the pipe joint through the pipe nut, and the threaded pipe joint bears pressure after the pipe nut is screwed, so that the standard friction coefficient testing device can only test the friction coefficient of the bolt and nut connection and cannot test the friction coefficient of the threaded pipe joint.
How to design a friction coefficient testing device and how to realize the friction coefficient test of the threaded pipe joint becomes a problem to be solved urgently.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a friction coefficient testing device, which is used for solving the problem that the standard friction coefficient testing device in the prior art cannot be suitable for testing the friction coefficient of the threaded pipe joint.
In order to achieve the above purpose, the utility model provides a friction coefficient testing device, which comprises a cover plate, wherein the bottom end of the cover plate is uniformly and circumferentially connected with a plurality of connecting supports, the inner sides of the bottom ends of the connecting supports are fixedly connected with a composite sensor together, the top end of the composite sensor is connected with the bottom end of an embedded support, the top end of the embedded support is connected with a bottom hole gasket, and an inverted conical groove is formed in the bottom hole gasket;
the cover plate is vertically provided with a through hole penetrating through the cover plate, a sleeve is arranged at the upper side corresponding to the through hole cover plate, a threaded hole gasket is arranged at the lower side corresponding to the through hole cover plate, and an internal threaded hole which is vertically opposite to the through hole is formed in the threaded hole gasket;
the inverted cone-shaped groove is positioned right below the internal thread hole.
By adopting the technical scheme: the conical bottom hole of the pipe nut in the bottom hole gasket simulation screw pipe joint connection and the internal thread of the pipe nut in the screw hole gasket simulation screw pipe joint connection are arranged, when the friction coefficient test of the screw pipe joint is carried out, the external screw thread column of the screw pipe joint can be screwed into the internal screw hole on the screw hole gasket under the action of the sleeve, the pipe penetrating through the internal of the external screw thread column is tightly pressed into the internal of the inverted conical groove on the bottom hole gasket, the bottom hole gasket is connected with the composite sensor through the embedded support, and the bottom hole gasket can transmit the pressure and friction torque of the threaded pipe joint to the composite sensor, so that the pressure of the threaded pipe joint and the friction torque between a pipe in the external threaded column and the inner surface of the inverted conical groove are measured, and finally the total friction coefficient, the thread friction coefficient and the friction coefficient of the supporting surface of the threaded pipe joint are calculated after the total torque of the sleeve is measured, and the friction coefficient test of the threaded pipe joint is completed.
In an embodiment of the utility model, a connecting screw is penetrated at the edge position of the cover plate, and the bottom end of the connecting screw is in threaded fit with the top end of the connecting support;
by adopting the technical scheme: the connection of the connection support on the cover plate is carried out through the connection screw, so that the connection support has detachability, and the later maintenance difficulty of the device is reduced.
In an embodiment of the utility model, the connecting support is L-shaped, and a limit groove matched with the bottom end of the composite sensor is formed in the connecting support;
by adopting the technical scheme: the composite sensor is supported by arranging the connecting support in an L shape, and the mounting stability of the composite sensor is improved by arranging the limiting groove matched with the composite sensor.
In an embodiment of the utility model, the composite sensor is sleeved at the bottom end of the embedded support;
the bottom end of the embedded support is provided with a bolt hole matched with an inner pin of the composite sensor; the embedded support is tightly attached to the composite sensor;
by adopting the technical scheme: the embedded support is matched with the pin in the composite sensor through the bolt hole, so that when the threaded pipe joint is screwed up, the generated friction torque is transmitted to the composite sensor for detection, and the friction torque of the threaded pipe joint is directly measured through the composite sensor; the embedded support is tightly matched with the compound sensor, so that the axial force of the threaded pipe joint can be transmitted to the compound sensor for detection when the threaded pipe joint is screwed up, and the pressure of the threaded pipe joint can be directly measured through the compound sensor.
In an embodiment of the utility model, the bottom hole gasket is a strip-shaped plate horizontally penetrating through the top end of the embedded support, inverted conical grooves are uniformly distributed on the embedded support, and the inner diameter of the inverted conical grooves uniformly distributed from one end of the embedded support to the other end of the embedded support is reduced;
by adopting the technical scheme: the application range of the device is increased by arranging a plurality of inverted conical grooves with different sizes on the bottom hole gasket, so that the device can be suitable for friction coefficient tests of threaded pipe joints with different pipe diameters.
In an embodiment of the utility model, the threaded hole gasket is a strip-shaped plate horizontally penetrating through the bottom end of the cover plate, the threaded hole gasket is uniformly provided with internal threaded holes, and the internal diameters of the uniformly distributed internal threaded holes decrease from one end of the cover plate to the other end of the cover plate;
by adopting the technical scheme: the application range of the device is increased by arranging a plurality of internal threaded holes with different sizes on the threaded hole gasket, and the friction coefficient test of threaded pipe joints with different pipe diameters can be adapted by matching with the inverted conical grooves with different sizes on the bottom hole gasket.
Advantageous effects
In the structure, the composite sensor is arranged and simultaneously monitors the pressure and friction torque generated by the threaded pipe joint during connection, and the total torque generated by the rotation of the driving sleeve is monitored by matching with the tightening tool, so that the total friction coefficient of the threaded pipe joint, the thread friction coefficient and the friction coefficient of the supporting surface can be calculated, and the friction coefficient test of the threaded pipe joint is completed; the popularization and application have good economic benefit and social benefit.
Drawings
Fig. 1 is a perspective view of the present utility model.
Fig. 2 is a front view of the present utility model.
Fig. 3 is a side cross-sectional view of the present utility model.
Fig. 4 is a schematic view of a threaded pipe joint interface.
In the figure: 1. a cover plate; 2. a connecting support; 3. a composite sensor; 4. an embedded support; 5. a bottom hole gasket; 6. a threaded hole gasket; 7. a sleeve; 8. and (5) connecting screws.
Detailed Description
Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.
Please refer to fig. 1 to 4. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.
As shown in fig. 1-3, the utility model provides a friction coefficient testing device, which comprises a cover plate 1, wherein the bottom end of the cover plate 1 is uniformly and circumferentially provided with a plurality of connecting supports 2, the inner sides of the bottom ends of the connecting supports 2 are fixedly connected with a composite sensor 3 together, the top end of the composite sensor 3 is connected with the bottom end of an embedded support 4, the top end of the embedded support 4 is connected with a bottom hole gasket 5, and an inverted conical groove is formed in the bottom hole gasket 5; the cover plate 1 is vertically provided with a through hole penetrating through the cover plate 1, a sleeve 7 is arranged at the upper side corresponding to the through hole cover plate 1, a threaded hole gasket 6 is arranged at the lower side corresponding to the through hole cover plate 1, and an internal threaded hole which is vertically opposite to the through hole is formed in the threaded hole gasket 6; the inverted cone-shaped groove is positioned right below the internal thread hole; when the friction coefficient test of the threaded pipe joint is carried out, the external threaded column of the threaded pipe joint can be screwed into the internal threaded hole on the threaded pipe joint gasket 6 under the action of the sleeve 7, and a pipe penetrating through the external threaded column is tightly pressed in the inverted conical groove on the bottom hole gasket 5, and the bottom hole gasket 5 is connected with the composite sensor 3 through the embedded support 4, so that the pressure and the friction torque of the threaded pipe joint can be transmitted to the composite sensor 3, the friction torque between the pressure of the threaded pipe joint and the friction torque between the pipe in the external threaded column and the inner surface of the inverted conical groove can be measured, the total friction torque of the threaded pipe joint can be obtained by subtracting the friction torque from the total torque generated by the sleeve 7, and finally, the friction coefficient of the threaded pipe joint, the friction coefficient of the thread and the friction coefficient of the support surface can be obtained through calculation, so that the friction coefficient test of the threaded pipe joint is completed.
The composite sensor 3 is sleeved at the bottom end of the embedded support 4; the bottom end of the embedded support 4 is provided with a bolt hole matched with the inner pin of the composite sensor 3; the embedded support 4 is tightly attached to the composite sensor 3; the embedded support 4 is matched with the pin in the composite sensor 3 through the bolt hole, so that when the threaded pipe joint is screwed up, generated friction torque can be transmitted to the composite sensor 3 for detection, and the friction torque of the threaded pipe joint can be directly measured through the composite sensor 3; the embedded support 4 is tightly matched with the composite sensor 3, so that the axial force of the threaded pipe joint can be transmitted to the composite sensor 3 for detection when the threaded pipe joint is screwed, and the pressure of the threaded pipe joint can be directly measured through the composite sensor 3.
The bottom hole gasket 5 is a strip-shaped plate horizontally penetrating through the top end of the embedded support 4, inverted conical grooves are uniformly distributed on the embedded support 4, the inner diameter of the inverted conical grooves uniformly distributed from one end of the embedded support 4 to the other end of the embedded support 4 is gradually decreased, the application range of the device is increased by arranging a plurality of inverted conical grooves with different sizes on the bottom hole gasket 5, and the friction coefficient test of threaded pipe joints with different pipe diameters can be adapted.
The threaded hole gasket 6 is a strip-shaped plate horizontally penetrating through the bottom end of the cover plate 1, the threaded hole gasket 6 is uniformly provided with internal threaded holes, the internal threaded holes uniformly provided with the internal threaded holes are gradually reduced from one end of the cover plate 1 to the other end of the cover plate 1, the application range of the device is increased by arranging a plurality of internal threaded holes with different sizes on the threaded hole gasket 6, and the friction coefficient test of threaded pipe joints with different pipe diameters can be adapted by matching with the inverted cone-shaped grooves with different sizes on the bottom hole gasket 5.
During specific implementation, proper inverted conical grooves and internal threaded holes are selected on the bottom hole gasket 5 and the threaded hole gasket 6 according to the outer diameter of the external threaded column of the threaded pipe joint to be tested, and the two are opposite up and down, when the friction coefficient of the threaded pipe joint is tested, the external threaded column of the threaded pipe joint is in threaded connection with the internal threaded hole under the action of the sleeve 7 and is finally propped against the inverted conical grooves on the bottom hole gasket 5, the generated pressure and friction force can be transmitted to the composite sensor 3 through the embedded support 4, the generated pressure and friction torque can be directly measured by the composite sensor 3, the total friction coefficient of the threaded pipe joint, the friction coefficient of the threaded friction coefficient and the friction coefficient of the supporting surface can be calculated through cooperation with the total torque of the sleeve 7, and the friction coefficient test of the threaded pipe joint is completed.
In summary, the utility model provides a friction coefficient testing device, which is provided with a compound sensor 3 to monitor the pressure and friction torque generated by the threaded pipe joint during connection, and is matched with a tightening tool to monitor the total torque generated by driving the sleeve 7 to rotate, so that the total friction coefficient, the thread friction coefficient and the friction coefficient of the supporting surface of the threaded pipe joint can be calculated, and the friction coefficient test of the threaded pipe joint is completed; the popularization and application have good economic benefit and social benefit. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (6)
1. Friction coefficient testing arrangement, including apron (1), its characterized in that: the bottom of the cover plate (1) is uniformly and circumferentially provided with a plurality of connecting supports (2), the inner sides of the bottom of the connecting supports (2) are fixedly connected with a composite sensor (3) together, the top end of the composite sensor (3) is connected with the bottom end of an embedded support (4), the top end of the embedded support (4) is connected with a bottom hole gasket (5), and an inverted conical groove is formed in the bottom hole gasket (5);
the cover plate (1) is vertically provided with a through hole penetrating through the cover plate (1), a sleeve (7) is arranged at the upper side corresponding to the through hole cover plate (1), a threaded hole gasket (6) is arranged at the lower side corresponding to the through hole cover plate (1), and an internal threaded hole which is vertically opposite to the through hole is formed in the threaded hole gasket (6);
the inverted cone-shaped groove is positioned right below the internal thread hole.
2. A friction coefficient testing apparatus according to claim 1, wherein: the edge position of the cover plate (1) is penetrated with a connecting screw (8), and the bottom end of the connecting screw (8) is in threaded fit with the top end of the connecting support (2).
3. A friction coefficient testing apparatus according to claim 1, wherein: the connecting support (2) is L-shaped, and a limiting groove matched with the bottom end of the compound sensor (3) is formed in the connecting support (2).
4. A friction coefficient testing apparatus according to claim 1, wherein: the composite sensor (3) is sleeved at the bottom end of the embedded support (4);
the bottom end of the embedded support (4) is provided with a bolt hole matched with the inner pin of the composite sensor (3); the embedded support (4) is tightly attached to the composite sensor (3).
5. A friction coefficient testing apparatus according to claim 1, wherein: the bottom hole gasket (5) is a strip-shaped plate horizontally penetrating through the top end of the embedded support (4), inverted conical grooves are uniformly distributed on the embedded support (4), and the inner diameter of the inverted conical grooves uniformly distributed is decreased from one end of the embedded support (4) to the other end of the embedded support (4).
6. A friction coefficient testing apparatus according to claim 1, wherein: the threaded hole gasket (6) is a strip-shaped plate horizontally penetrating through the bottom end of the cover plate (1), the threaded hole gasket (6) is uniformly provided with internal threaded holes, and the internal threaded holes uniformly provided with the internal threaded holes are gradually decreased from one end of the cover plate (1) to the other end of the cover plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320789777.5U CN219957294U (en) | 2023-04-11 | 2023-04-11 | Friction coefficient testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320789777.5U CN219957294U (en) | 2023-04-11 | 2023-04-11 | Friction coefficient testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219957294U true CN219957294U (en) | 2023-11-03 |
Family
ID=88551548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320789777.5U Active CN219957294U (en) | 2023-04-11 | 2023-04-11 | Friction coefficient testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219957294U (en) |
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2023
- 2023-04-11 CN CN202320789777.5U patent/CN219957294U/en active Active
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