CN211478027U - Device for measuring maximum static friction force and sliding friction coefficient by using rotary table - Google Patents
Device for measuring maximum static friction force and sliding friction coefficient by using rotary table Download PDFInfo
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- CN211478027U CN211478027U CN201922245138.9U CN201922245138U CN211478027U CN 211478027 U CN211478027 U CN 211478027U CN 201922245138 U CN201922245138 U CN 201922245138U CN 211478027 U CN211478027 U CN 211478027U
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- chassis
- motor
- control box
- sliding friction
- fixedly connected
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Abstract
The utility model discloses an utilize carousel to survey device of maximum static friction and coefficient of sliding friction relates to the relevant technical field of testing arrangement, including the device shadoof, the interior diapire fixedly connected with motor outer container of device shadoof, the inside fixed mounting of motor outer container has the motor, the output shaft of motor runs through the top middle part of motor outer container and is located the top of motor outer container, the output shaft fixedly connected with chassis of motor, the upper surface mid-mounting on chassis has the bearing, the upper surface on chassis is provided with the retooling, the pin hole has been seted up in the retooling, the downthehole pin that is provided with the retooling pin of pin, the retooling is through retooling pin fixed mounting on the chassis, the interior roof fixedly connected with control box of device shadoof. The utility model discloses can reach the biggest stiction of accurate measurement, also can accurate measurement sliding friction, the utility model discloses can the maximum stiction (4 at most) of a plurality of objects of simultaneous measurement.
Description
Technical Field
The utility model relates to a relevant technical field of testing arrangement, in particular to utilize carousel to survey device of biggest static friction power and coefficient of sliding friction.
Background
The friction force is a force for resisting the relative movement or relative movement trend of the objects, the direction of the friction force is opposite to the direction of the relative movement or relative movement trend of the objects, the measurement of the sliding friction coefficient between different interfaces and the maximum static friction force of a specific object on a specific surface have important significance for production and life, the friction exists when the relative movement or relative movement trend exists as long as positive pressure exists between any two objects with contact, and the measurement of the maximum static friction force and the sliding friction coefficient is necessary for the stress analysis between the objects with the friction force.
However, the traditional method for measuring the maximum static friction force and the sliding friction coefficient is not accurate enough, and mainly reflects that the reading of the spring dynamometer at the moment of sliding is not well captured and the measured object cannot slide at a constant speed.
In order to solve the problem, the utility model discloses an utilize the device of the biggest static friction power of carousel survey and coefficient of sliding friction successfully overcome above-mentioned problem for measuring result is more accurate.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a not enough to prior art, the utility model provides an utilize carousel to survey device of maximum static friction power and coefficient of sliding friction has solved traditional maximum static friction power and coefficient of sliding friction survey method and has still accurate problem inadequately.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a device for measuring the maximum static friction force and the sliding friction coefficient by utilizing a rotary table comprises a device lifting rod, wherein the inner bottom wall of the device lifting rod is fixedly connected with a motor outer box, a motor is fixedly installed inside the motor outer box, an output shaft of the motor penetrates through the middle part of the top end of the motor outer box and is positioned above the motor outer box, the output shaft of the motor is fixedly connected with a chassis, a bearing is installed in the middle of the upper surface of the chassis, a disc changing plate is arranged on the upper surface of the chassis, a pin hole is formed in the disc changing plate, a disc changing pin is arranged in the pin hole, and the disc changing plate is fixedly installed on the chassis through the disc changing pin;
the device lifter comprises a lifting rod, a bearing, a control box, a tension sensor, a T-shaped rod, a steel strand, a rotary fixing point, a blocking rod and a folding rotating shaft, wherein the control box is fixedly connected to the inner top wall of the lifting rod, the bottom end of the control box is fixedly connected with the bearing, the tension sensor is fixedly connected to the inner wall of one side of the control box, the tension sensor is movably connected with the T-shaped rod through two spherical hinge rods, the steel strand is installed at the left end of the T-shaped rod, the middle of the T-shaped rod is movably connected with the control box through the rotary fixing point, the right end of the T-shaped.
Optionally, four of the replaceable sheets are arranged, and two adjacent replaceable sheets are in contact with each other.
Optionally, the number of the pin holes is three, and the three pin holes are respectively located at the triangle of the slide changer.
Optionally, the disc changer is in contact with the bearing;
the bottom end of the control box is fixedly connected with the bearing.
Optionally, the front top of the control box is fixedly provided with a data display screen, and the front bottom of the control box is fixedly provided with a switch.
Optionally, a steel strand tension adjusting screw and a motor speed adjusting screw are arranged between the data display screen and the switch, the steel strand tension adjusting screw and the motor speed adjusting screw are fixedly mounted on the front face of the control box, and the steel strand tension adjusting screw and the motor speed adjusting screw are distributed from left to right in sequence.
Optionally, a counting sensor is fixedly mounted on one side of the middle portion, close to the chassis, of the lifting rod of the device, a counting induction strip is fixedly mounted on the outer side of the chassis, and the position of the counting induction strip corresponds to the position of the counting sensor.
(III) advantageous effects
The utility model provides an utilize carousel to survey device of maximum static friction power and coefficient of sliding friction possesses following beneficial effect:
(1) the utility model discloses can reach the biggest stiction of accurate measurement, also can accurate measurement sliding friction power.
(2) The utility model discloses can measure the biggest static friction power (4 at most) of a plurality of objects simultaneously.
(3) And utilize the utility model discloses when measuring the biggest static frictional force of testee, for the tradition directly drags the measurement with the spring dynamometer, frictional force increases stably, can not appear neglecting to move the condition of neglecting to stop, and the reading is convenient and accurate.
(4) When measuring the coefficient of sliding friction, if the testee quality is too light to bring the tension sensor reading unobvious, the utility model discloses a testee interception pole can also provide positive pressure to the testee for it is more accurate to measure.
(5) The rotary disc of the utility model has the changing pieces (as figure 6) with different roughness and materials, and can be replaced according to the needs.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic sectional view of the structure of the control box of the present invention.
Fig. 3 is a schematic top view of the structure of the present invention.
Fig. 4 is a schematic top sectional view of the structure of the control box of the present invention.
Fig. 5 is a schematic partial top view of the structure of the present invention.
Fig. 6 is a schematic view of the film-changing structure of the present invention.
Fig. 7 is a schematic view of the structure of the counting sensor strip of the present invention.
In the figure: 1. lifting a rod; 2. an outer case of the motor; 3. a motor; 4. a chassis; 5. a bearing; 6. changing the film; 7. a pin hole; 8. a wafer replacing pin; 9. a control box; 10. a tension sensor; 11. two ends of the ball hinge rod; 12. a T-shaped rod; 13. steel strand wires; 14. rotating the fixed point; 15. a catch bar; 16. a folding rotating shaft; 17. a data display screen; 18. a switch; 19. a steel strand tension adjusting screw; 20. a motor rotating speed adjusting screw; 21. a counting sensor; 22. and counting the induction bars.
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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
The utility model provides a device for measuring maximum static friction force and sliding friction coefficient by using a rotary table as shown in figures 1-7, which comprises a lifting rod 1, wherein the inner bottom wall of the lifting rod 1 is fixedly connected with a motor outer box 2, the inside of the motor outer box 2 is fixedly provided with a motor 3, the output shaft of the motor 3 penetrates through the middle part of the top end of the motor outer box 2 and is positioned above the motor outer box 2, the output shaft of the motor 3 is fixedly connected with a chassis 4, the middle part of the upper surface of the chassis 4 is provided with a bearing 5, the upper surface of the chassis 4 is provided with a replaceable sheet 6, the replaceable sheet 6 is contacted with the bearing 5, four replaceable sheets 6 are arranged, two adjacent replaceable sheets 6 are contacted with each other uniformly, the replaceable sheet 6 is provided with three pin holes 7, the three pin holes 7 are respectively positioned at the three corners of the replaceable sheet 6, the replaceable sheet pins 8 are arranged in the pin holes 7, the replaceable sheet 6 is fixedly arranged on the chassis 4 through, through the matching arrangement of the pin hole 7 and the disc changing pin 8, the effect of convenient installation and replacement of the disc changing 6 can be achieved;
the inner top wall of the device lifting rod 1 is fixedly connected with a control box 9, the bottom end of the control box 9 is fixedly connected with a bearing 5, the bottom end of the control box 9 is fixedly connected with the bearing 5, the inner wall of one side of the control box 9 is fixedly connected with a tension sensor 10, the tension sensor 10 is movably connected with a T-shaped rod 12 through a two-end ball hinge rod 11, the left end of the T-shaped rod 12 is provided with a steel strand 13, the middle part of the T-shaped rod 12 is movably connected with the control box 9 through a rotary fixed point 14, the right end of the T-shaped rod 12 penetrates through a groove formed in the other side of the control box 9 and is fixedly connected with a blocking rod 15, the middle part of the blocking rod 15 is provided with a folding rotating shaft 16, the front top of the control box 9 is fixedly provided with a data display screen 17, the front bottom of the control box 9 is fixedly provided with a switch 18, the steel strand tension adjusting screw 19 and the motor rotating speed adjusting screw 20 are both fixedly arranged on the front of the control box 9, and the steel strand tension adjusting screw 19 and the motor rotating speed adjusting screw 20 are sequentially distributed from left to right, the counting sensor 21 is fixedly arranged on one side of the middle part of the device lifting rod 1 close to the chassis 4, the counting induction strip 22 is fixedly arranged on the outer side of the chassis 4, the position of the counting induction strip 22 corresponds to the position of the counting sensor 21, when the utility model is used for measuring the maximum static friction force of a measured object under a specific interface, the utility model provides the principle that the measured object on the chassis 4 needs to utilize the friction force between the measured object and the chassis 4 to provide the centripetal force for keeping the measured object rotating around the center of the chassis 4 when the chassis 4 rotates, the rotating speed of the chassis 4 is gradually increased from zero after the measured object is placed on the chassis 4, and the centripetal acceleration of the measured object is calculated by measuring the rotating speed of, after the mass of the measured object is weighed, the centripetal force of the measured object rotating around the center of the chassis 4 stably can be calculated, when the measured object does not slide, the static friction force provides the centripetal force, namely the static friction force is equal to the centripetal force, and the rotating speed of the chassis 4 is recorded at the moment of sliding, so that the maximum static friction force of the measured object on the placed interface can be obtained;
when the utility model is used for measuring the sliding friction coefficient of the measured object under a specific interface, the measured object is firstly placed on the slide 6 of the chassis 4, the object interception rod 15 is put down, the measured object is pushed by the interception rod 15 to slide, the chassis 4 rotates at a stable low speed, at the moment, the friction force between the measured object and the chassis 4 and the thrust force of the interception rod 15 form acting force and reaction force, the interception rod 15 is connected in the control box 9 at the upper part of the utility model, which is roughly a T-shaped lever, wherein, the right side of the upper transverse is much longer than the other two sides (as shown in figure 4), the rotation center is at a T-shaped intersection point, the longest edge of the T-shaped lever provides thrust force for the measured object, the other two sides are respectively connected with the tension sensor 10 and the steel strand 13, the tension reading can be measured on the side connected with the tension sensor 10, and stable sliding friction force can be obtained through the calculation, the one end that links to each other with steel strand wires 13 can exert positive pressure for the testee that is in interception pole 15 long end through lifting, can calculate the coefficient of sliding friction of testee under this chassis 4 interfaces after surveying the object quality again, if the testee quality is too light, tension sensor 10 reading is unobvious, the utility model discloses an object interception pole 15 can also provide positive pressure to the testee for measure more accurately.
The utility model discloses the theory of operation: when utilizing the utility model discloses when measuring the biggest static friction force of testee under specific interface, the utility model discloses need utilize self and chassis 4's frictional force to provide the principle of keeping self rotatory centripetal force around chassis 4 center according to the testee on chassis 4 when chassis 4 rotates, place the rotational speed of chassis 4 behind the testee on chassis 4 and by zero crescent, calculate the centripetal acceleration of testee through the rotational speed of measuring chassis 4 and the distance of testee apart from the center of rotation, can calculate the centripetal force of testee around chassis 4 center steady rotation after weighing the quality of testee again, when not sliding, static friction force provides centripetal force, and the size of static friction force equals centripetal force, in the moment of sliding, record chassis 4 rotational speed, alright obtain the biggest static friction force of testee on the interface of putting;
when the utility model is used for measuring the sliding friction coefficient of the measured object under a specific interface, the measured object is firstly placed on the slide 6 of the chassis 4, the object interception rod 15 is put down, the measured object is pushed by the interception rod 15 to slide, the chassis 4 rotates at a stable low speed, at the moment, the friction force between the measured object and the chassis 4 and the thrust force of the interception rod 15 form acting force and reaction force, the interception rod 15 is connected in the control box 9 at the upper part of the utility model, which is roughly a T-shaped lever, wherein, the right side of the upper transverse is much longer than the other two sides (as shown in figure 4), the rotation center is at a T-shaped intersection point, the longest edge of the T-shaped lever provides thrust force for the measured object, the other two sides are respectively connected with the tension sensor 10 and the steel strand 13, the tension reading can be measured on the side connected with the tension sensor 10, and stable sliding friction force can be obtained through the calculation, the one end that links to each other with steel strand wires 13 can exert positive pressure for the testee that is in interception pole 15 long end through lifting, can calculate the coefficient of sliding friction of testee under this chassis 4 interfaces after surveying the object quality again, if the testee quality is too light, tension sensor 10 reading is unobvious, the utility model discloses an object interception pole 15 can also provide positive pressure to the testee for measure more accurately.
It is noted that in the present disclosure, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (7)
1. The utility model provides an utilize carousel to survey maximum static friction and coefficient of sliding friction's device, includes device shadoof (1), its characterized in that: the inner bottom wall of the device lifting rod (1) is fixedly connected with a motor outer box (2), a motor (3) is fixedly installed inside the motor outer box (2), an output shaft of the motor (3) penetrates through the middle of the top end of the motor outer box (2) and is located above the motor outer box (2), an output shaft of the motor (3) is fixedly connected with a chassis (4), a bearing (5) is installed in the middle of the upper surface of the chassis (4), a sheet changing plate (6) is arranged on the upper surface of the chassis (4), a pin hole (7) is formed in the sheet changing plate (6), a sheet changing pin (8) is arranged in the pin hole (7), and the sheet changing plate (6) is fixedly installed on the chassis (4) through the sheet changing pin (8);
the device is characterized in that a control box (9) is fixedly connected to the inner top wall of a lifting rod (1), the bottom end of the control box (9) is fixedly connected with a bearing (5), a tension sensor (10) is fixedly connected to the inner wall of one side of the control box (9), the tension sensor (10) is movably connected with a T-shaped rod (12) through a two-end ball hinge rod (11), a steel strand (13) is installed at the left end of the T-shaped rod (12), the middle of the T-shaped rod (12) is movably connected with the control box (9) through a rotary fixing point (14), the right end of the T-shaped rod (12) penetrates through a groove formed in the other side of the control box (9) and is fixedly connected with a blocking rod (15), and a folding rotating shaft (16) is arranged in the middle of the blocking rod (15.
2. The apparatus for measuring maximum static friction and sliding friction coefficient using a turntable as claimed in claim 1, wherein:
the number of the replaceable discs (6) is four, and every two adjacent replaceable discs (6) are in contact with each other.
3. The apparatus for measuring maximum static friction and sliding friction coefficient using a turntable as claimed in claim 1, wherein:
the number of the pin holes (7) is three, and the three pin holes (7) are respectively positioned at the triangular positions of the sheet changing plates (6).
4. The apparatus for measuring maximum static friction and sliding friction coefficient using a turntable as claimed in claim 1, wherein:
the disc changer (6) is in contact with the bearing (5).
5. The apparatus for measuring maximum static friction and sliding friction coefficient using a turntable as claimed in claim 1, wherein:
the front top fixed mounting of control box (9) has data display screen (17), the front bottom fixed mounting of control box (9) has switch (18).
6. The apparatus for measuring maximum static friction and sliding friction coefficient using a turntable as claimed in claim 5, wherein:
a steel strand tension adjusting screw (19) and a motor rotating speed adjusting screw (20) are arranged between the data display screen (17) and the switch (18), the steel strand tension adjusting screw (19) and the motor rotating speed adjusting screw (20) are fixedly installed on the front face of the control box (9), and the steel strand tension adjusting screw (19) and the motor rotating speed adjusting screw (20) are sequentially distributed from left to right.
7. The apparatus for measuring maximum static friction and sliding friction coefficient using a turntable as claimed in claim 1, wherein:
the device lifting rod (1) is close to one side of the middle of the chassis (4) and is fixedly provided with a counting sensor (21), the outer side of the chassis (4) is fixedly provided with a counting induction strip (22), and the position of the counting induction strip (22) corresponds to the position of the counting sensor (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922245138.9U CN211478027U (en) | 2019-12-13 | 2019-12-13 | Device for measuring maximum static friction force and sliding friction coefficient by using rotary table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922245138.9U CN211478027U (en) | 2019-12-13 | 2019-12-13 | Device for measuring maximum static friction force and sliding friction coefficient by using rotary table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211478027U true CN211478027U (en) | 2020-09-11 |
Family
ID=72359014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922245138.9U Expired - Fee Related CN211478027U (en) | 2019-12-13 | 2019-12-13 | Device for measuring maximum static friction force and sliding friction coefficient by using rotary table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211478027U (en) |
-
2019
- 2019-12-13 CN CN201922245138.9U patent/CN211478027U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200911 Termination date: 20211213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |