CN217766016U - Bolt friction coefficient detection device - Google Patents
Bolt friction coefficient detection device Download PDFInfo
- Publication number
- CN217766016U CN217766016U CN202221759962.1U CN202221759962U CN217766016U CN 217766016 U CN217766016 U CN 217766016U CN 202221759962 U CN202221759962 U CN 202221759962U CN 217766016 U CN217766016 U CN 217766016U
- Authority
- CN
- China
- Prior art keywords
- bolt
- fixedly connected
- friction coefficient
- supporting seat
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model discloses a bolt coefficient of friction detection device relates to bolt coefficient of friction technical field, including the bottom plate, still include: the servo motor is fixedly installed on the bottom plate, an encoder and a dynamic torque sensor are arranged on the servo motor, the dynamic torque sensor is fixedly connected to the output end of the servo motor, the slide rails are fixedly connected to the bottom plate, the slide rails are connected to the two slide rails in a sliding mode, a support seat is fixedly connected to the two slide rails, holes are formed in the support seat, a fixing cylinder is fixedly connected to the inner wall of each hole, a force-torque composite sensor is arranged on the fixing cylinder in a sleeved mode, and bolts are arranged in the fixing cylinder. The utility model discloses an above-mentioned isotructure's cooperation has realized the coefficient of friction that measures the bolt that can be simple quick, and converts out coefficient of friction through measuring department axial force, moment of torsion and deformation volume for measuring result is more accurate.
Description
Technical Field
The utility model relates to a bolt coefficient of friction technical field specifically is a bolt coefficient of friction detection device.
Background
The friction coefficient of the bolt is an important standard for judging whether the bolt reaches the standard, and before the bolt leaves a factory or is applied to a product, whether the bolt reaches the standard needs to be judged to ensure the connection safety; need detect the coefficient of friction of bolt, the utility model provides a bolt coefficient of friction detection device can be through detecting clamp force, moment of torsion and deformation volume, and then can calculate true bolt coefficient of friction for measuring result is more accurate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bolt coefficient of friction detection device possesses the coefficient of friction that measures the bolt that can be simple quick, and calculates coefficient of friction through the measuring result of measuring department axial force, moment of torsion and deformation volume for measuring the result is more accurate, has solved the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a bolt coefficient of friction detection device, includes the bottom plate, still includes:
the servo motor is fixedly arranged on the bottom plate, and an encoder is arranged on the servo motor;
the dynamic torque sensor is fixedly connected to the output end of the servo motor;
the two sliding rails are fixedly connected to the bottom plate and are connected with sliding seats in a sliding manner;
the supporting seat is fixedly connected to the two sliding seats, a hole is formed in the supporting seat, a fixing cylinder is fixedly connected to the inner wall of the hole, a force-torque composite sensor is fixedly sleeved on the fixing cylinder, a bolt for detection can be installed in the fixing cylinder, a groove for placing the tail of the bolt is formed in the end of the fixing cylinder, and a tool in the fixing cylinder is matched with bolts with different diameter specifications;
the connecting ring is fixedly connected to one side, far away from the fixing cylinder, of the supporting seat, a nut which is abutted to the connecting ring is in threaded connection with the bolt, and a connecting sleeve is sleeved between the bolt and the dynamic torque sensor;
and the abutting assembly is fixedly arranged on the supporting seat and used for abutting against the end part of the bolt, so that the initial bolt is prevented from sliding and rotating during testing.
Preferably, the slide rail is connected with a positioning block in a sliding manner, and the positioning block is provided with a locking bolt.
Preferably, the threaded portion of the bolt is inserted into the fixing cylinder and sequentially penetrates through the force-torque composite sensor, the support seat and the connecting ring, the connecting ring is provided with a placing groove, and the nut abuts against the inner wall of the placing groove.
Preferably, the open grooves at the two ends of the connecting sleeve are respectively matched with the threaded part on the bolt and the end part of the dynamic torque sensor.
Preferably, a protective sleeve is detachably mounted on the connecting ring through a screw, and the protective sleeve is sleeved on the surface of the nut.
Preferably, the pressing component comprises an L-shaped supporting plate fixedly mounted on the supporting seat, a T-shaped mounting plate is fixedly connected onto the L-shaped supporting plate, swing rods are rotatably connected to the upper side and the lower side of the T-shaped mounting plate through pin shafts, a side U-shaped plate is rotatably connected onto the T-shaped mounting plate through pin shafts, a connecting rod is hinged between the two swing rods and the side U-shaped plate, and a pressing component used for abutting against the tail of a bolt is arranged on the side U-shaped plate.
Preferably, the pressing assembly comprises a threaded column inserted in the side U-shaped plate, the threaded column is connected with two nuts in a threaded manner, the two nuts can fix the threaded column on the side U-shaped plate, and the end part of the threaded column is fixedly connected with a rubber cap which is in contact with the tail part of the bolt.
Preferably, the threaded column is sleeved with a gasket for increasing the contact area of the screw cap and the side U-shaped plate.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. through the arrangement of the force-torque composite sensor, the dynamic torque sensor, the servo motor and the encoder, the total friction coefficient and the thread friction coefficient of the bolt can be calculated through the clamping force, the torque and the deformation amount of the measuring part (the deformation amount is calculated through the rotation angle of the encoder after being stressed and the diameter of the tested bolt), and the end face friction coefficient of the bolt is the difference value of the total friction coefficient and the thread friction coefficient of the bolt, so that the measuring result is more accurate.
2. Through the setting of slide rail, slide and locating piece for can change the displacement of supporting seat, be convenient for adapt to the bolt that awaits measuring of different length sizes, guarantee simultaneously that the bolt that awaits measuring is in coaxially with the servo motor output, coaxial messenger measuring result is more accurate.
3. Through the setting of the abutting assembly, the bolt can be abutted against the fixed cylinder, the bolt can be stably and firmly fixed in the supporting seat under the matching of the nut, the bolt is conveniently driven to rotate under the action of the servo motor and the dynamic torque sensor, the deformation quantity of the bolt is measured through the encoder and the servo motor, the test is completely in accordance with the ISO 16407-2005 fastener-torque/tension test, the standard of GB/T16823.3-2010 of the torque-clamping force test is met, and the accuracy and the normalization of the test are ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the present invention;
fig. 2 is a schematic side view of the embodiment of fig. 1;
fig. 3 is a schematic structural view of the connection sleeve and the dynamic torque sensor shown in fig. 1 according to the present invention after being separated;
fig. 4 is an exploded view of the middle force-torque sensor, the supporting base and the connecting ring according to the present invention;
fig. 5 is a schematic structural view of the pressing assembly of the present invention.
In the figure: 1. a base plate; 2. a servo motor; 3. a dynamic torque sensor; 4. a slide rail; 5. a slide base; 6. a supporting seat; 7. a fixed cylinder; 8. a force-torque compound sensor; 9. a bolt; 10. a connecting ring; 11. a nut; 12. connecting sleeves; 13. positioning blocks; 14. an L-shaped support plate; 15. a T-shaped mounting plate; 16. a swing rod; 17. a side U-shaped plate; 18. a threaded post; 19. a nut; 20. a rubber cap; 21. a connecting rod; 22. a protective sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides a bolt coefficient of friction detection device, includes bottom plate 1, still includes:
the servo motor 2 is fixedly arranged on the bottom plate 1, an encoder is arranged on the servo motor 2, the encoder belongs to the prior art, and the rotation angle of the servo motor can be measured through the encoder, namely the deformation generated by the rotation of the bolt 9 is driven;
the dynamic torque sensor 3 is fixedly connected to the output end of the servo motor 2;
the two sliding rails 4 are fixedly connected to the bottom plate 1, and the two sliding rails 4 are connected with a sliding seat 5 in a sliding manner;
the device comprises a supporting seat 6, the supporting seat 6 is fixedly connected to two sliding seats 5, a hole is formed in the supporting seat 6, a fixed cylinder 7 is fixedly connected to the inner wall of the hole, a force-torque compound sensor 8 is fixedly sleeved on the fixed cylinder 7, a bolt 9 for detection can be installed in the fixed cylinder 7, a groove for placing the tail of the bolt 9 is formed in the end portion of the fixed cylinder 7, and a tool in the fixed cylinder 7 is matched with the bolts 9 with different diameters;
the connecting ring 10 is fixedly connected to one side, far away from the fixed cylinder 7, of the supporting seat 6, the bolt 9 is in threaded connection with a nut 11 abutted against the connecting ring 10, and a connecting sleeve 12 is sleeved between the bolt 9 and the dynamic torque sensor 3;
the connecting sleeve 12 plays a role in transmission, the output end of the servo motor 2 drives the dynamic torque sensor 3 to rotate, the slotted hole at one end, close to the dynamic torque sensor 3, of the connecting sleeve 12 is spliced and adapted with the dynamic torque sensor 3, the slotted hole at one end, close to the bolt 9, of the connecting sleeve is spliced and adapted with the bolt 9, the bolt 9 is conveniently twisted and pulled under the action of the connecting sleeve 12, the deformation quantity of the bolt 9 is measured through the encoder and the servo motor 2, the test not only completely accords with an ISO 16407-2005 fastener-torque/tension test during the test, but also meets the GB/T16823.3-2010 standard of the torque-clamping force test, the accuracy and the normalization of the test are ensured, and the torque coefficient calculation formula is as follows:
wherein: K-Torque coefficient units: nm
F-tensile value measured (axial force value) units: n is a radical of
d-nominal bolt diameter units: mm (mm)
When the test is carried out, the standard of a complete ISO 16407-2005 fastener-torque/tension test ensures the accuracy and the normalization of the test, and the calculation formula of the total friction coefficient is as follows:
the calculation formula of the thread friction coefficient is as follows:
wherein mu tot -total coefficient of friction
μ th Coefficient of thread friction
T-Total Torque units: nm
T th Thread torque, i.e. the unit of torque applied to the bolt: nm
F-tensile value (axial force value) units: n is a radical of
d 2 Thread nominal diameter units: mm is
Db-gasket diameter Unit: mm is
P-pitch unit: mm is
And the abutting assembly is fixedly arranged on the supporting seat 6 and used for abutting against the end part of the bolt 9, so that the initial bolt is prevented from sliding and rotating during testing.
Sliding connection has locating piece 13 on slide rail 4, be equipped with the locking bolt on the locating piece 13, slide 5 can remove on slide rail 4, drive supporting seat 6 when slide 5 and remove suitable position, and when assembling the relation between bolt 9 and the dynamic torque sensor 3, fix locating piece 13 through the locking bolt of screwing, thereby carry out spacing fixed to slide 5, make the both ends of adapter sleeve 12 can with bolt 9 and the 3 butt of dynamic torque sensor, make things convenient for the adapter sleeve to drive bolt 9 and turn round and draw.
The screw thread portion of bolt 9 inserts from solid fixed cylinder 7, and run through power-moment of torsion combined sensor 8 in proper order, supporting seat 6 and go-between 10, the standing groove has been seted up on the go-between 10, and the inner wall butt of nut 11 and standing groove, screw thread portion run-through go-between 10 on bolt 9, and the afterbody is when being located the recess, support tight bolt 9 afterbody through supporting the pressure subassembly, conveniently rotate nut 11, rotate nut 11 to the standing groove in, then install lag 22 through the screw, make to carry on spacingly to nut 11, make bolt 9 stable be located supporting seat 6, guaranteed simultaneously that bolt 9 and the 2 output of servo motor that await measuring are in coaxially, it is coaxial to make measuring result more accurate.
The open slots at the two ends of the connecting sleeve 12 are respectively matched with the thread part on the bolt 9 and the end part of the dynamic torque sensor 3.
A protective sleeve 22 is detachably mounted on the connecting ring 10 through a screw, and the protective sleeve 22 is sleeved on the surface of the nut 11.
The pressing component comprises an L-shaped supporting plate 14 fixedly mounted on the supporting seat 6, a T-shaped mounting plate 15 is fixedly connected onto the L-shaped supporting plate 14, swing rods 16 are rotatably connected to the upper side and the lower side of the T-shaped mounting plate 15 through pin shafts, a holding sleeve is sleeved on each of the two swing rods 16, a side U-shaped plate 17 is rotatably connected onto the T-shaped mounting plate 15 through the pin shafts, a connecting rod 21 is hinged between each of the two swing rods 16 and the side U-shaped plate 17, and a pressing component used for abutting against the tail portion of the bolt 9 is arranged on each side U-shaped plate 17.
The pressing assembly comprises a threaded column 18 inserted in the side U-shaped plate 17, two nuts 19 are connected to the threaded column 18 in a threaded mode, the threaded column 18 can be fixed to the side U-shaped plate 17 through the two nuts 19, and a rubber cap 20 in contact with the tail portion of the bolt 9 is fixedly connected to the end portion of the threaded column 18.
Adjust the length that screw post 18 stretches out in the solid fixed cylinder 7 according to actual conditions earlier, promptly through loosening two nuts 19, change the length of screw post 18, adjust to suitable position after, screw two nuts 19, fix screw post 18, then rotate pendulum rod 16, under the effect of connecting rod 21, drive side U template 17 and supporting seat 6 parallel state for screw post 18 and rubber cap 20 inject solid fixed cylinder 7 in, carry out the butt to the afterbody of bolt 9.
The threaded column 18 is sleeved with a gasket for increasing the contact area of the nut 19 and the side U-shaped plate 17,
although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a bolt coefficient of friction detection device, includes bottom plate (1), its characterized in that: further comprising:
the servo motor (2), the said servo motor (2) is fixedly mounted on bottom plate (1), and there are coders on the servo motor (2);
the dynamic torque sensor (3), the said dynamic torque sensor (3) is fixedly connected to output end of the servomotor (2);
the two sliding rails (4) are fixedly connected to the bottom plate (1), and the two sliding rails (4) are connected with a sliding seat (5) in a sliding manner;
the supporting seat (6) is fixedly connected to the two sliding seats (5), a hole is formed in the supporting seat (6), a fixing cylinder (7) is fixedly connected to the inner wall of the hole, a force-torque composite sensor (8) is fixedly sleeved on the fixing cylinder (7), a bolt (9) is arranged in the fixing cylinder (7), and a groove for placing the tail of the bolt (9) is formed in the end portion of the fixing cylinder (7);
the connecting ring (10) is fixedly connected to one side, far away from the fixed cylinder (7), of the supporting seat (6), the bolt (9) is in threaded connection with a nut (11) abutted against the connecting ring (10), and a connecting sleeve (12) is sleeved between the bolt (9) and the dynamic torque sensor (3);
and the pressing component is fixedly arranged on the supporting seat (6) and is used for pressing against the end part of the bolt (9).
2. The bolt friction coefficient detecting device according to claim 1, characterized in that: the sliding rail is characterized in that a positioning block (13) is connected to the sliding rail (4) in a sliding mode, and a locking bolt is arranged on the positioning block (13).
3. The bolt friction coefficient detecting device according to claim 1, characterized in that: the screw thread part of the bolt (9) is inserted from the fixed cylinder (7) and sequentially penetrates through the force-torque composite sensor (8), the supporting seat (6) and the connecting ring (10), a placing groove is formed in the connecting ring (10), and the nut (11) is abutted to the inner wall of the placing groove.
4. The bolt friction coefficient detecting device according to claim 1, characterized in that: open grooves at two ends of the connecting sleeve (12) are respectively matched with the threaded part on the bolt (9) and the end part of the dynamic torque sensor (3).
5. The bolt friction coefficient detecting device according to claim 1, characterized in that: a protective sleeve (22) is detachably mounted on the connecting ring (10) through a screw, and the protective sleeve (22) is sleeved on the surface of the nut (11).
6. The bolt friction coefficient detecting device according to claim 1, characterized in that: the butt-pressing component comprises an L-shaped supporting plate (14) fixedly mounted on a supporting seat (6), a T-shaped mounting plate (15) is fixedly connected onto the L-shaped supporting plate (14), the upper side and the lower side of the T-shaped mounting plate (15) are both rotatably connected with swing rods (16) through hinge pins, a side U-shaped plate (17) is rotatably connected onto the T-shaped mounting plate (15) through hinge pins, a connecting rod (21) is hinged between the two swing rods (16) and the side U-shaped plate (17), and a pressing component used for butt joint of the tail portion of a bolt (9) is arranged on the side U-shaped plate (17).
7. The bolt friction coefficient detecting device according to claim 6, characterized in that: the pressing assembly comprises a threaded column (18) inserted into the side U-shaped plate (17), the threaded column (18) is connected with two nuts (19) in a threaded mode, the two nuts (19) can fix the threaded column (18) on the side U-shaped plate (17), and the end portion of the threaded column (18) is fixedly connected with a rubber cap (20) in contact with the tail portion of the bolt (9).
8. The bolt friction coefficient detecting device according to claim 7, characterized in that: and a gasket used for increasing the contact area of the screw cap (19) and the side U-shaped plate (17) is sleeved on the threaded column (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221759962.1U CN217766016U (en) | 2022-07-08 | 2022-07-08 | Bolt friction coefficient detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221759962.1U CN217766016U (en) | 2022-07-08 | 2022-07-08 | Bolt friction coefficient detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217766016U true CN217766016U (en) | 2022-11-08 |
Family
ID=83871880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221759962.1U Active CN217766016U (en) | 2022-07-08 | 2022-07-08 | Bolt friction coefficient detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217766016U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116399798A (en) * | 2023-04-04 | 2023-07-07 | 上海达克罗涂复工业有限公司 | New energy automobile fastener friction coefficient tester and testing method |
| CN116818306A (en) * | 2023-07-11 | 2023-09-29 | 长春仟邦测试设备有限公司 | Pipe joint torsion-pull relation and friction coefficient measuring method |
-
2022
- 2022-07-08 CN CN202221759962.1U patent/CN217766016U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116399798A (en) * | 2023-04-04 | 2023-07-07 | 上海达克罗涂复工业有限公司 | New energy automobile fastener friction coefficient tester and testing method |
| CN116399798B (en) * | 2023-04-04 | 2024-03-19 | 上海达克罗涂复工业有限公司 | New energy automobile fastener friction coefficient tester and testing method |
| CN116818306A (en) * | 2023-07-11 | 2023-09-29 | 长春仟邦测试设备有限公司 | Pipe joint torsion-pull relation and friction coefficient measuring method |
| CN116818306B (en) * | 2023-07-11 | 2024-03-15 | 长春仟邦测试设备有限公司 | Pipe joint torsion-pull relation and friction coefficient measuring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217766016U (en) | Bolt friction coefficient detection device | |
| CN114544337B (en) | Be used for wire rope tensile properties test to detect machine | |
| CN108917988B (en) | Portable wheel rail transverse force calibration device | |
| CN217504559U (en) | Long and thin hexagonal screw leads to only check out test set | |
| CN210908883U (en) | Automatic torque adjusting machine for rotating shaft assembly of notebook computer | |
| CN214408475U (en) | Bending resistance detection device for steel-concrete composite beam connecting piece | |
| CN115077883A (en) | Single-bolt tightening test device and test method | |
| CN211668757U (en) | Stress-strain tester | |
| CN200986498Y (en) | Safety valve online checking device | |
| CN114354190A (en) | Motor bearing random dynamic load testing device and testing method | |
| CN110823702A (en) | Auxiliary device for testing peel strength of heat shrinkable sleeve | |
| CN209979227U (en) | Experimental fixture for stroke test of clutch control handle | |
| CN113290599A (en) | Precision cutting device for polytetrafluoroethylene sleeve of instrument and meter | |
| CN216483886U (en) | Front fork is in same direction as smooth degree measuring tool that detects | |
| CN108375451B (en) | Torque wrench calibrating device and loading assembly thereof | |
| CN218916782U (en) | Integrated brake oil pipe screwed joint and bolt fastening performance testing machine | |
| CN216484557U (en) | Steel wire thread insert coefficient of friction check out test set | |
| CN111157331A (en) | Indentation measuring device for detection of Brinell hardness tester | |
| CN220472956U (en) | Torsion testing device | |
| CN212206006U (en) | Circle detection device that beats | |
| CN218444247U (en) | Static torque detection tool | |
| CN219977995U (en) | Manual high-strength bolt detector | |
| CN218865343U (en) | Full-automatic high-strength bolt detection tester | |
| CN211477627U (en) | Testing device for rotating force of bicycle handlebar sleeve | |
| CN218545999U (en) | Detection apparatus for electric pressure instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |