CN213957121U - Agricultural material sliding friction coefficient measuring device - Google Patents
Agricultural material sliding friction coefficient measuring device Download PDFInfo
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- CN213957121U CN213957121U CN202023041117.4U CN202023041117U CN213957121U CN 213957121 U CN213957121 U CN 213957121U CN 202023041117 U CN202023041117 U CN 202023041117U CN 213957121 U CN213957121 U CN 213957121U
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- lead screw
- sliding friction
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- inclined plate
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- 239000012773 agricultural material Substances 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 45
- 238000005259 measurement Methods 0.000 abstract description 9
- 238000012360 testing method Methods 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 230000003028 elevating effect Effects 0.000 abstract 2
- 238000012935 Averaging Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The utility model relates to a coefficient of sliding friction measuring device of agricultural material. The utility model comprises a horizontal part and a vertical part, a material collecting tray is arranged above the horizontal part of the working support, the material collecting tray is connected with an inclined plate through a rotating shaft, and a digital display angle gauge is arranged at the tail end of the inclined plate; the top end of the vertical part of the working support is provided with a lead screw fixing block, the lead screw fixing block is connected with two servo motors arranged on the horizontal part of the working support below through a lead screw and a support rod I, and the lead screw is connected with the lifting shaft through a coupling block. Thereby this device drives the rotation of lead screw through control servo motor and controls elevating system's lift, and elevating system further drives the hang plate motion, makes the hang plate change inclination, and the inclination of hang plate utilizes digital display angle appearance to measure. The utility model discloses a measurement of the coefficient of sliding friction between agricultural material and the contact material to easy operation carries out repetition test many times, can obtain accurate result.
Description
Technical Field
The utility model relates to a coefficient of sliding friction measuring device of agricultural material belongs to measuring device technical field.
Background
Sliding friction is the force generated by two objects sliding relative to each other on a contact surface to resist the relative sliding of the two objects, and in popular terms, the friction generated when one object slides on the surface of the other object. Frictional forces are widely present in practical engineering applications. The sliding friction coefficient refers to the ratio between the friction force and the positive pressure when two objects in contact with each other move relatively, and is related to the roughness of the surfaces of the objects, the roughness of the surfaces of the objects and the size of the contact area.
At present, aiming at the measurement of the sliding friction coefficient of irregular agricultural materials, the inclined plane of the existing device is lifted unstably, so that the measurement precision is low; the slope inclination angle of some existing devices is measured with a graduated scale, resulting in inaccurate measured inclination degrees, which all cause certain errors. To the above problem, the utility model discloses improve.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the utility model provides a coefficient of sliding friction measuring device of agricultural material, the inclination of hang plate when the change that the device can be stable measures agricultural material coefficient of sliding friction, the angle of accurate measurement hang plate is used for solving the current inaccuracy of measuring agricultural material coefficient of sliding friction, measures loaded down with trivial details problem.
The utility model adopts the technical scheme that: a sliding friction coefficient measuring device for agricultural materials comprises a working support 1, a material collecting disc 4, a rotating shaft 7, a digital display angle gauge 12 and a display device, wherein the working support 1 comprises a horizontal part and a vertical part, the material collecting disc 4 is arranged above the horizontal part of the working support 1, the material collecting disc 4 is connected with an inclined plate 3 through the rotating shaft 7, and the tail end of the inclined plate 3 is provided with the digital display angle gauge 12; 1 vertical part top of work support installs lead screw fixed block 2, lead screw fixed block 2 passes through lead screw 11 and bracing piece I13 and installs two servo motor 6 on 1 horizontal part of work support with the below and is connected, lead screw 11 is connected with lift axle 9 through coupling block 5.
Further, work support 1 includes four stabilizer blades, 1 horizontal part below fixedly connected with bracing piece II 15 of work support.
Further, a power supply 14 is installed on the back surface of the working support 1, and the power supply 14 is fixed in the middle of a cross bar at the bottom of the working support 1 through a bolt.
Further, the material collecting tray 4 is fixedly installed at the middle position of the horizontal portion of the working support 1 through bolts.
Furthermore, two ends of the rotating shaft 7 are provided with threads, the rotating shaft 7 penetrates through the material collecting tray 4, the rotating shaft 7 and the material collecting tray 4 can rotate relatively, and nuts are arranged at the contact positions of the two ends of the rotating shaft 7 and the material collecting tray 4; the rotating shaft 7 is mounted on the material collecting tray 4 at both ends of the rotating shaft 7 using nuts.
Further, hang plate 3 is located axis of rotation 7 position placed in the middle, 3 bottom baffle perpendicular to hang plate 3 of hang plate, hang plate 3 and axis of rotation 7 relatively rotate, fixed mounting has two axis of rotation snap rings 8 on the axis of rotation 7, and there is 2mm clearance axis of rotation snap ring 8 inboard and hang plate 3, and axis of rotation snap ring 8 can restrict hang plate 3 and slide along axis of rotation 7.
Further, the inclined plate 3 is located at the central position of the lifting shaft 9; the inclined plate 3 and the lifting shaft 9 can slide relatively, two lifting shaft clamping rings 10 are fixedly mounted on the lifting shaft 9, a 2mm gap is reserved between the inner sides of the lifting shaft clamping rings 10 and the inclined plate 3, and the lifting shaft clamping rings 10 can limit the inclined plate 3 to slide along the lifting shaft 9.
Further, the digital display angle gauge 12 is fixedly installed at the tail end of the inclined plate 3 through bolts, and the bottom of the digital display angle gauge 12 is kept parallel relative to the inclined plate 3.
Further, lead screw fixed block 2 passes through bolt fixed connection on work support 1, and lead screw fixed block 2 does not have relative motion with bracing piece I13, and lead screw fixed block 2 rotates with lead screw 11 to be connected.
Furthermore, the servo motor 6 is fixedly arranged on two sides of the working support 1 through bolts, the servo motor 6 is rotatably connected with the lead screw 11, and the servo motor 6 and the support rod I13 do not move relatively;
the connecting shaft block 5 is rotatably connected with the screw rod 11, and the connecting shaft block 5 is fixedly connected with the lifting shaft 9.
A use method of a sliding friction coefficient measuring device for agricultural materials comprises the following steps:
the first step is as follows: starting a power supply, controlling the servo motor to rotate by the power supply, driving the screw rod to rotate by the servo motor, adjusting the inclination angle of the inclined plate to be reduced by the screw rod through the connecting shaft block and the lifting shaft, and disconnecting the power supply when the inclination angle is minimum (5 degrees);
the second step is that: the material contacting with the measured material is placed on the inclined plate, and the contact material and material contact surface is parallel to the inclined plate.
The third step: starting a power supply, driving a screw rod to rotate through a servo motor, adjusting the inclination angle of an inclined plate through a connecting shaft block and a lifting shaft by the screw rod, and observing whether the material slides or not along with the increase of the inclination angle;
the fourth step: when the material begins to slide along with the increase of the inclination angle of the inclined plate, the power supply is disconnected;
the fifth step: recording the inclination angle measured by the digital display angle meter at the moment;
and a sixth step: repeating the first step to the fifth step, and carrying out a plurality of tests; the measured materials should be changed every time, the measured materials should be of the same type, but the sizes and the shapes should be kept random and cannot be too different;
the seventh step: measuring the obtained inclination angle theta, and obtaining a friction coefficient mu by using a formula mu as tan theta;
eighth step: and (4) averaging the sliding friction coefficients obtained by multiple measurements to obtain a result.
The utility model has the advantages that:
1. the utility model discloses when the sliding friction coefficient of accurate measurement agricultural material, can realize the bank height on accurate regulation inclined plane, through the digital display angular instrument, can audio-visual inclination that obtains to need not do any processing to the overall dimension and the big or small characteristic of agricultural material, the multiple measurements is got the mean value, has reduced experimental error greatly, has shortened test time simultaneously, has saved the experiment cost.
2. The utility model can change the maximum inclination angle during the test by changing the vertical height of the bracket, the lead screw and other components of the device; by varying the contact material placed on the inclined plate, the coefficient of sliding friction between the material and the different contact materials can be measured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a rear view schematic diagram of the present invention.
Reference numbers in FIGS. 1-2: 1-a working support; 2, fixing a lead screw block; 3-an inclined plate; 4-a material collecting tray; 5-a coupling block; 6-a servo motor; 7-a rotating shaft; 8-rotating shaft snap ring; 9-a lifting shaft; 10-lifting shaft snap ring; 11-a lead screw; 12-digital display angle gauge; 13-support bar i; 14-a power supply; 15-support bar II.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1: as shown in fig. 1-2, a sliding friction coefficient measuring device for agricultural materials, a working support 1 comprises a horizontal part and a vertical part, a material collecting tray 4 is installed above the horizontal part of the working support 1, the material collecting tray 4 is connected with an inclined plate 3 through a rotating shaft 7, and a digital display angle meter 12 is installed at the tail end position of the inclined plate 3 relative to the rotating shaft 7; 1 vertical part top of work support installs lead screw fixed block 2, lead screw fixed block 2 passes through lead screw 11 and bracing piece I13 and installs two servo motor 6 on 1 horizontal part of work support with the below and is connected, lead screw 11 is connected with lift axle 9 through coupling block 5.
Further, work support 1 includes four stabilizer blades, 1 horizontal part below fixedly connected with bracing piece II 15 of work support.
Further, a power supply 14 is installed on the back surface of the working support 1, and the power supply 14 is fixed in the middle of a cross bar at the bottom of the working support 1 through a bolt.
Further, the material collecting tray 4 is fixedly installed at the middle position of the horizontal portion of the working support 1 through bolts.
Furthermore, two ends of the rotating shaft 7 are provided with threads, the rotating shaft 7 penetrates through the material collecting tray 4, the rotating shaft 7 and the material collecting tray 4 can rotate relatively, and nuts are arranged at the contact positions of the two ends of the rotating shaft 7 and the material collecting tray 4; the rotating shaft 7 is mounted on the material collecting tray 4 at both ends of the rotating shaft 7 using nuts.
Further, hang plate 3 is located axis of rotation 7 position placed in the middle, 3 bottom baffle perpendicular to hang plate 3 of hang plate, hang plate 3 and axis of rotation 7 relatively rotate, fixed mounting has two axis of rotation snap rings 8 on the axis of rotation 7, and there is 2mm clearance axis of rotation snap ring 8 inboard and hang plate 3, and axis of rotation snap ring 8 can restrict hang plate 3 and slide along axis of rotation 7.
Further, the inclined plate 3 is located at the central position of the lifting shaft 9; the inclined plate 3 and the lifting shaft 9 can slide relatively, two lifting shaft clamping rings 10 are fixedly mounted on the lifting shaft 9, a 2mm gap is reserved between the inner sides of the lifting shaft clamping rings 10 and the inclined plate 3, and the lifting shaft clamping rings 10 can limit the inclined plate 3 to slide along the lifting shaft 9.
Further, the digital display angle gauge 12 is fixedly installed at the tail end of the inclined plate 3 through bolts, and the bottom of the digital display angle gauge 12 is kept parallel relative to the inclined plate 3.
Further, lead screw fixed block 2 passes through bolt fixed connection on work support 1, and lead screw fixed block 2 does not have relative motion with bracing piece I13, and lead screw fixed block 2 rotates with lead screw 11 to be connected.
Furthermore, the servo motor 6 is fixedly arranged on two sides of the working support 1 through bolts, the servo motor 6 is rotatably connected with the lead screw 11, and the servo motor 6 and the support rod I13 do not move relatively;
the connecting shaft block 5 is rotatably connected with the screw rod 11, and the connecting shaft block 5 is fixedly connected with the lifting shaft 9.
The use method of the device for measuring the sliding friction coefficient of the agricultural material comprises the following steps:
the first step is as follows: starting a power supply 14, controlling the servo motor 6 to start rotating by the power supply 14, driving a lead screw 11 to rotate by the servo motor 6, reducing the inclination angle of the inclined plate 3 by the lead screw 11 through a connecting block 5 and a lifting shaft 9, and disconnecting the power supply 14 when the inclination angle reaches a minimum 5 degrees;
the second step is that: on the inclined plate 3 is placed a material that is in contact with the material to be measured, the contact material and material contact surface should be kept parallel to the inclined plate 3.
The third step: starting a power supply 14, driving a screw rod 11 to rotate through a servo motor 6, increasing the inclination angle of the inclined plate 3 through a connecting shaft block 5 and a lifting shaft 9 by the screw rod 11, and observing whether the material slides along with the increase of the inclination angle;
the fourth step: when the material is observed to slide along with the increase of the inclination angle of the inclined plate 3, the power supply 14 is switched off;
the fifth step: recording the inclination angle measured by the digital display angle meter 12 at this time;
and a sixth step: repeating the first step to the fifth step, and carrying out a plurality of tests; but the tested materials should be replaced in each test, the tested materials should be of the same type, but the sizes and the shapes should be kept random and cannot be too different;
the seventh step: measuring the obtained inclination angle theta, and obtaining a friction coefficient mu by using a formula mu as tan theta;
eighth step: and (4) averaging the sliding friction coefficients obtained by multiple measurements to obtain a result.
The utility model discloses a measurement of the coefficient of sliding friction between agricultural material and the contact material to easy operation carries out repetition test many times, can obtain accurate result.
While the present invention has been particularly shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a coefficient of sliding friction measuring device of agricultural material which characterized in that: the working support (1) comprises a horizontal part and a vertical part, a material collecting disc (4) is arranged above the horizontal part of the working support (1), the material collecting disc (4) is connected with an inclined plate (3) through a rotating shaft (7), and a digital display angle meter (12) is arranged at the tail end of the inclined plate (3); lead screw fixed block (2) are installed on work support (1) vertical part top, lead screw fixed block (2) are installed two servo motor (6) on work support (1) horizontal part through lead screw (11) and bracing piece I (13) and below and are connected, lead screw (11) are connected with lift axle (9) through shaft connecting block (5).
2. The apparatus for measuring sliding friction coefficient of agricultural material according to claim 1, wherein: the working support (1) comprises four support legs, and a support rod II (15) is fixedly connected below the horizontal part of the working support (1).
3. The apparatus for measuring sliding friction coefficient of agricultural material according to claim 1, wherein: work support (1) back mounted has power (14), power (14) pass through the bolt fastening at the central position of work support (1) bottom horizontal pole.
4. The apparatus for measuring sliding friction coefficient of agricultural material according to claim 1, wherein: the material collecting plate (4) is fixedly arranged in the middle of the horizontal part of the working support (1) through bolts.
5. The apparatus for measuring sliding friction coefficient of agricultural material according to claim 1, wherein: the screw thread has at axis of rotation (7) both ends, and material catch tray (4) are passed in axis of rotation (7), and relative rotation can take place for axis of rotation (7) and material catch tray (4), and the nut is installed with material catch tray (4) contact department in axis of rotation (7) both ends.
6. The apparatus for measuring sliding friction coefficient of agricultural material according to claim 1, wherein: the utility model discloses a tilting plate, including tilting plate (3), axis of rotation (7), tilting plate (3) bottom baffle perpendicular to tilting plate (3), tilting plate (3) and axis of rotation (7) can rotate relatively, fixed mounting has two axis of rotation snap rings (8) on axis of rotation (7), and axis of rotation snap ring (8) inboard has 2mm clearance with tilting plate (3), and axis of rotation snap ring (8) can restrict tilting plate (3) and slide along axis of rotation (7).
7. The apparatus for measuring sliding friction coefficient of agricultural material according to claim 1, wherein: the inclined plate (3) is positioned in the middle of the lifting shaft (9); the inclined plate (3) and the lifting shaft (9) can slide relatively, two lifting shaft clamping rings (10) are fixedly mounted on the lifting shaft (9), a 2mm gap is reserved between the inner side of each lifting shaft clamping ring (10) and the inclined plate (3), and the lifting shaft clamping rings (10) can limit the inclined plate (3) to slide along the lifting shaft (9).
8. The apparatus for measuring sliding friction coefficient of agricultural material according to claim 1, wherein: the digital display angle meter (12) is fixedly installed at the tail end of the inclined plate (3) through a bolt, and the bottom of the digital display angle meter (12) is kept parallel relative to the inclined plate (3).
9. The apparatus for measuring sliding friction coefficient of agricultural material according to claim 1, wherein: lead screw fixed block (2) pass through bolt fixed connection on work support (1), lead screw fixed block (2) and bracing piece I (13) do not have relative motion, lead screw fixed block (2) and lead screw (11) rotate to be connected.
10. The apparatus for measuring sliding friction coefficient of agricultural material according to claim 1, wherein: the servo motor (6) is fixedly arranged on two sides of the working support (1) through bolts, the servo motor (6) is rotatably connected with the lead screw (11), and the servo motor (6) does not move relative to the support rod I (13);
the connecting shaft block (5) is rotatably connected with the lead screw (11), and the connecting shaft block (5) is fixedly connected with the lifting shaft (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023041117.4U CN213957121U (en) | 2020-12-17 | 2020-12-17 | Agricultural material sliding friction coefficient measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023041117.4U CN213957121U (en) | 2020-12-17 | 2020-12-17 | Agricultural material sliding friction coefficient measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN213957121U true CN213957121U (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023041117.4U Expired - Fee Related CN213957121U (en) | 2020-12-17 | 2020-12-17 | Agricultural material sliding friction coefficient measuring device |
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| Country | Link |
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| CN (1) | CN213957121U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459991A (en) * | 2022-04-11 | 2022-05-10 | 中国地质大学（武汉） | Device and method for in-situ measurement of friction coefficient of artificial rock wall inclined plane |
| CN116273871A (en) * | 2023-02-24 | 2023-06-23 | 昆明理工大学 | Shock absorber for plane round screening machine |
-
2020
- 2020-12-17 CN CN202023041117.4U patent/CN213957121U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459991A (en) * | 2022-04-11 | 2022-05-10 | 中国地质大学（武汉） | Device and method for in-situ measurement of friction coefficient of artificial rock wall inclined plane |
| CN114459991B (en) * | 2022-04-11 | 2022-06-14 | 中国地质大学（武汉） | Device and method for in-situ measurement of friction coefficient of artificial rock wall inclined plane |
| CN116273871A (en) * | 2023-02-24 | 2023-06-23 | 昆明理工大学 | Shock absorber for plane round screening machine |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210813 |