CN110006821B - Device and method for measuring friction coefficient of steel plate and bushing - Google Patents
Device and method for measuring friction coefficient of steel plate and bushing Download PDFInfo
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- CN110006821B CN110006821B CN201910383547.7A CN201910383547A CN110006821B CN 110006821 B CN110006821 B CN 110006821B CN 201910383547 A CN201910383547 A CN 201910383547A CN 110006821 B CN110006821 B CN 110006821B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
Abstract
The invention discloses a device and a method for measuring the friction coefficient of a steel plate and a bush, wherein the device for measuring the friction coefficient of the steel plate and the bush comprises a base, a testing part and a loading part; the base is arranged on the floor; the testing part is arranged on the base; the loading part is arranged on the testing part. The device and the method for measuring the friction coefficient of the steel plate and the bush can safely and reliably test, and can fully ensure high-precision measurement results and have simple, convenient and quick calculation method because a force sensor of equipment and a load sensor for acquiring the axial pressing force of the bolt are high-precision sensors and are simultaneously acquired. In addition, the support can slide on the T-shaped groove of the bottom plate to meet the test of bushings with various lengths, and the universal test device has good universality.
Description
Technical Field
The invention relates to the technical field of friction coefficient measurement, in particular to a device and a method for measuring the friction coefficient of a steel plate and a lining.
Background
In various industrial production devices, the connection between a steel plate and a bushing is frequently seen, wherein the friction coefficient between the steel plate and the bushing is an important parameter in various devices, which not only can ensure the normal production of the industry, but also plays an important role in safety, however, no special measuring device and measuring method for the friction coefficient between the steel plate and the bushing exist at present.
Therefore, it is desirable to provide an apparatus and a method for measuring the friction coefficient between a steel plate and a bushing.
Disclosure of Invention
The invention aims to provide a device and a method for measuring the friction coefficient of a steel plate and a bush, which are used for safely and reliably testing the friction coefficients between the bushes with various lengths and diameters and the steel plate and providing a high-precision and accurate test structure.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a friction coefficient measuring device for a steel plate and a bush comprises a base, a testing part and a loading part; the base is arranged on the floor; the testing part is arranged on the base; the loading part is arranged on the testing part.
Further, the base comprises a bottom plate, a left support and a right support; the bottom plate is arranged on a floor, and the left support and the right support are respectively and vertically arranged on the bottom plate;
the testing part comprises a long bolt, a load sensor, a cushion block, a bushing and a nut; the long bolt sequentially penetrates through the load sensor, the cushion block, the left steel plate, the bushing and the right steel plate and is connected with the nut in a matched mode;
the loading part comprises a loading block and a guide plate; the loading block is sleeved on the bushing; the guide plate comprises a front guide plate and a rear guide plate, and the front guide plate and the rear guide plate are respectively fixed on the front side and the rear side of the loading block.
Further, the left support comprises a left vertical plate and a left steel plate; the left vertical plate is a rectangular plate with a through hole in the middle; the left vertical plate is vertically arranged on the bottom plate, and the left vertical plate and the bottom plate are integrally formed; the left steel plate is fixed on the right side of the left vertical plate through a bolt, and a mounting hole is formed in the left steel plate; the mounting hole in the left steel plate is coaxial with the through hole in the left vertical plate, and the diameter of the mounting hole is smaller than that of the through hole in the left vertical plate;
the right support comprises a right vertical plate and a right steel plate; the right vertical plate is in an inverted T shape, is vertically arranged on the bottom plate, is fixed on the T-shaped groove of the bottom plate through a bolt, and is adjustable in position; the right vertical plate is also provided with a through hole, and the through hole on the right vertical plate is coaxial with the through hole on the left vertical plate and has the same size; the right steel plate is fixed on the left side of the right vertical plate through a bolt, a mounting hole is formed in the right steel plate, and the diameter of the mounting hole is the same as that of the mounting hole in the left steel plate; the mounting hole on the right steel plate is coaxial with the through hole on the right vertical plate, and the diameter of the mounting hole is smaller than that of the through hole on the right vertical plate.
Further, the diameter of the cushion block is smaller than that of the through hole in the left vertical plate; the bush is located between left steel sheet and the right steel sheet, just the internal diameter of bush is 1.5mm than the diameter of longbolt.
Further, the calculation formula of the friction coefficient is as follows:
μ＝F/2Fz
wherein F is the force value when the loading force is stable in the loading process, and Fz is the collected load of the load sensor.
The invention also adopts the following technical scheme for solving the technical problems:
a method for measuring the friction coefficient of a steel plate and a bushing comprises the following steps:
s10, fixing a steel plate and a bushing;
s20, adjusting the position of the bushing;
s30, applying load to the loading block, and collecting a loading load value, a displacement value of the bushing and the load of the load sensor;
s40, stopping loading and unloading to zero when the loading force is suddenly increased;
and S50, calculating the friction coefficient between the steel plate and the bushing.
The invention has the following beneficial effects: the device and the method for measuring the friction coefficient of the steel plate and the bush can safely and reliably test, and can fully ensure high-precision measurement results and have simple, convenient and quick calculation method because a force sensor of equipment and a load sensor for acquiring the axial pressing force of the bolt are high-precision sensors and are simultaneously acquired. In addition, the support can slide on the T-shaped groove of the bottom plate to meet the test of bushings with various lengths, and the universal test device has good universality.
Drawings
FIG. 1 is a schematic view of a steel plate and bushing coefficient of friction measuring device of the present invention;
the notation in the figures means: 1-a bottom plate; 2-a left vertical plate; 3-left steel plate; 4-a right vertical plate; 5-right steel plate; 6-long bolt; 7-a load cell; 8-cushion block; 9-a bushing; 10-a nut; 11-a loading block; 12-guide plate.
Detailed Description
The technical solution of the present invention is further described below with reference to the following embodiments and the accompanying drawings.
Example 1
The embodiment provides a steel plate and bushing friction coefficient measuring device, which can safely and reliably test the friction coefficients between bushings with various lengths and diameters and steel plates and provide accurate test results with high precision.
As shown in FIG. 1, the device for measuring the friction coefficient of the steel plate and the bush comprises a base, a testing part and a loading part; the base is arranged on the floor; the testing part is arranged on the base; the loading part is arranged on the testing part.
Specifically, the base comprises a bottom plate 1, a left support and a right support; the bottom plate 1 is arranged on a floor, and the left support and the right support are respectively and vertically arranged on the bottom plate 1.
Further, the left support comprises a left vertical plate 2 and a left steel plate 3; the left vertical plate 2 is a rectangular plate with a through hole in the middle; the left vertical plate 2 is vertically arranged on the bottom plate 1, and the left vertical plate 2 and the bottom plate 1 are integrally formed; the left steel plate 3 is fixed on the right side of the left vertical plate 2 through a bolt, and a mounting hole is formed in the left steel plate 3; the mounting hole on the left steel plate 3 is coaxial with the through hole on the left vertical plate 2, and the diameter of the mounting hole is smaller than that of the through hole on the left vertical plate 2.
The right support comprises a right vertical plate 4 and a right steel plate 5; the right vertical plate 4 is in an inverted T shape, is vertically arranged on the bottom plate 1, is fixed on a T-shaped groove of the bottom plate 1 through a bolt, and is adjustable in position; the right vertical plate 4 is also provided with a through hole, and the through hole on the right vertical plate 4 is coaxial with the through hole on the left vertical plate 2 and has the same size; the right steel plate 5 is fixed on the left side of the right vertical plate 4 through a bolt, a mounting hole is formed in the right steel plate 5, and the diameter of the mounting hole is the same as that of the mounting hole in the left steel plate 3; the mounting hole on the right steel plate 5 is coaxial with the through hole on the right vertical plate 4, and the diameter of the mounting hole is smaller than that of the through hole on the right vertical plate 4.
The testing part comprises a long bolt 6, a load sensor 7, a cushion block 8, a bushing 9 and a nut 10; the long bolt 6 sequentially penetrates through the load sensor 7, the cushion block 8, the left steel plate 3, the bushing 9 and the right steel plate 5 and is connected with the nut 10 in a matched mode. Specifically, the diameter of the cushion block 8 is smaller than that of the through hole on the left vertical plate 2; the bush 9 is positioned between the left steel plate 3 and the right steel plate 5, and the inner diameter of the bush 9 is 1.5mm longer than the diameter of the long bolt 6.
During testing, the bush 9 is pulled upwards by hand to enable the lower surface of the inner hole of the bush 9 to be in contact with the lower surface of the long bolt 6, so that a gap is reserved between the upper surface of the inner hole of the bush 9 and the upper surface of the long bolt 6; the nut 10 is tightened by a torque wrench to achieve a clamping torque, thereby fastening the long bolt 6 with the bottom plate 1 and the right bracket.
The loading part comprises a loading block 11 and a guide plate 12; the loading block 11 is sleeved on the lining 9; the guide plate 12 comprises a front guide plate and a rear guide plate, the front guide plate and the rear guide plate are respectively fixed on the front side and the rear side of the loading block 11 and can slide up and down along the front side and the rear side of the left vertical plate 2, so that the loading block 11 is ensured to be always vertically downward in the loading process.
When the steel plate and bushing friction coefficient measuring device is used for measuring, loading equipment is used for applying load to the bushing 9 through the loading block 11, when the loading equipment is just in contact with the loading block 11, the numerical value of a force sensor of the loading equipment is cleared, then pressure is slowly applied, the loading load value, the displacement value of the bushing and the load value of the load sensor are collected at the same time, curves of the loading load value and the displacement value of the bushing are observed, and when the loading force is suddenly increased, loading is stopped and unloading is zero. During the loading process, the guide plate ensures that the vertical loading state of the loading block 11 is unchanged.
And finally, the force value when the loading force is stable in the loading process is recorded as F, the load value of the load sensor which is correspondingly acquired is recorded as Fz, the Fz is the measured pressing force of the bushing and the left steel plate and the right steel plate, and the F is the total friction force between the bushing and the left steel plate and the right steel plate. The friction coefficient mu between the steel plate and the bush is then calculated according to the following formula,
μ＝F/2Fz。
the friction coefficient measuring device for the steel plate and the bush can safely and reliably test, and because the force sensor of the equipment and the load sensor for acquiring the axial pressing force of the bolt are high-precision sensors and acquire simultaneously, the high-precision measuring result can be fully ensured, and the calculation method is simple, convenient and quick. In addition, the support can slide on the T-shaped groove of the bottom plate, the test of bushings with various lengths can be met, and the universal test device has good universality.
Example 2
The embodiment provides a steel plate and a method for measuring the friction coefficient of a bushing, which can safely and reliably test the friction coefficients of the bushing and the steel plate with various lengths and diameters and provide accurate test results with high precision.
A method for measuring the friction coefficient of a steel plate and a bushing comprises the following steps:
s10, fixing a steel plate and a bushing;
in the embodiment of the invention, steel plates are respectively fixed on a left vertical plate 2 and a right vertical plate 4, and a long bolt 6 sequentially penetrates through a load sensor 7, a cushion block 8, a left steel plate 3, a lining 9, a loading block 11 and a right steel plate 5 and is matched with a nut 10;
s20, adjusting the position of the bush 9;
in the embodiment of the invention, the bush 9 is supported, the lower surface of the inner hole of the bush 9 is contacted with the lower surface of the long bolt 6, a gap is ensured between the upper surface of the inner hole of the bush 9 and the upper surface of the long bolt 6, and the nut 10 is screwed by a torque wrench to achieve the required clamping torque.
S30, applying load to the loading block 11, and collecting a loading load value, a displacement value of the bushing and the load of the load sensor;
in the embodiment of the present invention, a loading device is used to apply a load to the loading block 11, specifically, when the loading device is just in contact with the loading block, a force sensor of the loading device is cleared, then the load is slowly applied while a loading load value, a displacement value of the liner, and a load of the load sensor are collected, and a loading load value and displacement value curve of the liner are observed.
S40, stopping loading and unloading to zero when the loading force is suddenly increased;
in the embodiment of the invention, the guide plate 12 ensures that the vertical loading state of the loading block 11 is unchanged during the loading process.
And S50, calculating the friction coefficient between the steel plate and the bushing.
In the embodiment of the invention, the force value of a relatively stable section in the loading force is selected and recorded as F, the load of the load sensor correspondingly acquired is recorded as Fz, the Fz is the measured pressing force of the bushing 9 and the left and right steel plates 3 and 5, and F is the total friction force between the bushing 9 and the left and right steel plates 3 and 5, so that the friction coefficient between the steel plates and the bushing is calculated by the following formula:
μ＝F/2Fz
the method for measuring the friction coefficient of the steel plate and the bush can safely and reliably test, and because the force sensor of the equipment and the load sensor for acquiring the axial pressing force of the bolt are high-precision sensors and acquire simultaneously, the high-precision measurement result can be fully ensured, and the calculation method is simple, convenient and quick. In addition, the support can slide on the T-shaped groove of the bottom plate, the test of bushings with various lengths can be met, and the universal test device has good universality.
The sequence of the above embodiments is only for convenience of description and does not represent the advantages and disadvantages of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. A friction coefficient measuring device for a steel plate and a bush is characterized by comprising a base, a testing part and a loading part; the base is arranged on the floor; the testing part is arranged on the base; the loading part is arranged on the testing part;
the base comprises a bottom plate, a left support and a right support; the bottom plate is arranged on a floor, and the left support and the right support are respectively and vertically arranged on the bottom plate;
the left support comprises a left vertical plate and a left steel plate; the left vertical plate is a rectangular plate with a through hole in the middle; the left vertical plate is vertically arranged on the bottom plate, and the left vertical plate and the bottom plate are integrally formed; the left steel plate is fixed on the right side of the left vertical plate through a bolt, and a mounting hole is formed in the left steel plate; the mounting hole in the left steel plate is coaxial with the through hole in the left vertical plate, and the diameter of the mounting hole is smaller than that of the through hole in the left vertical plate;
the right support comprises a right vertical plate and a right steel plate; the right vertical plate is in an inverted T shape, is vertically arranged on the bottom plate, is fixed on the T-shaped groove of the bottom plate through a bolt, and is adjustable in position; the right vertical plate is also provided with a through hole, and the through hole on the right vertical plate is coaxial with the through hole on the left vertical plate and has the same size; the right steel plate is fixed on the left side of the right vertical plate through a bolt, a mounting hole is formed in the right steel plate, and the diameter of the mounting hole is the same as that of the mounting hole in the left steel plate; the mounting hole in the right steel plate is coaxial with the through hole in the right vertical plate, and the diameter of the mounting hole is smaller than that of the through hole in the right vertical plate;
the testing part comprises a long bolt, a load sensor, a cushion block, a bushing and a nut; the long bolt sequentially penetrates through the load sensor, the cushion block, the left steel plate, the bushing and the right steel plate and is connected with the nut in a matched mode; the bushing is positioned between the left steel plate and the right steel plate, and the inner diameter of the bushing is 1.5mm longer than the diameter of the long bolt;
the loading part comprises a loading block and a guide plate; the loading block is sleeved on the bushing; the guide plate comprises a front guide plate and a rear guide plate, and the front guide plate and the rear guide plate are respectively fixed on the front side and the rear side of the loading block.
2. The steel plate and bushing coefficient of friction measuring device of claim 1, wherein the spacer diameter is smaller than the diameter of the through hole on the left riser.
3. The steel plate and bushing friction coefficient measuring device according to claim 1, wherein the friction coefficient is calculated by the formula:
μ＝F/2Fz
wherein F is the force value when the loading force is stable in the loading process, and Fz is the collected load of the load sensor.
4. A method for measuring a friction coefficient of a steel plate and a bush by the steel plate and bush friction coefficient measuring apparatus according to any one of claims 1 to 3, comprising the steps of:
s10, fixing a steel plate and a bushing;
s20, adjusting the position of the bushing;
s30, applying load to the loading block, and collecting a loading load value, a displacement value of the bushing and the load of the load sensor;
s40, stopping loading and unloading to zero when the loading force is suddenly increased;
and S50, calculating the friction coefficient between the steel plate and the bushing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910383547.7A CN110006821B (en) | 2019-05-09 | 2019-05-09 | Device and method for measuring friction coefficient of steel plate and bushing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910383547.7A CN110006821B (en) | 2019-05-09 | 2019-05-09 | Device and method for measuring friction coefficient of steel plate and bushing |
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| CN110006821A CN110006821A (en) | 2019-07-12 |
| CN110006821B true CN110006821B (en) | 2021-08-17 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201188083Y (en) * | 2007-11-07 | 2009-01-28 | 第二炮兵工程学院对外技术服务部 | Apparatus for testing material friction coefficient under high loading condition |
| RU121589U1 (en) * | 2012-06-22 | 2012-10-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный политехнический университет" (ФГБОУ ВПО "СПбГУ") | DEVICE FOR DETERMINING POWDER Friction Coefficient in Non-Metallic Media |
| CN204630905U (en) * | 2014-12-22 | 2015-09-09 | 浙江工业大学 | The proving installation of circular ring structure hardware friction factor |
| CN105043976A (en) * | 2015-07-28 | 2015-11-11 | 南京航空航天大学 | Test device for dynamically measuring fretting pair frictional coefficient during fretting fatigue process and test method |
| CN205075606U (en) * | 2015-10-27 | 2016-03-09 | 安徽柳工起重机有限公司 | Leaf spring formula suspension with rubber bush structure |
| CN109668827A (en) * | 2019-01-23 | 2019-04-23 | 扬州市江都永坚有限公司 | A kind of antifriction apparatus and friction coefficient measurement method for testing friction power |
-
2019
- 2019-05-09 CN CN201910383547.7A patent/CN110006821B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201188083Y (en) * | 2007-11-07 | 2009-01-28 | 第二炮兵工程学院对外技术服务部 | Apparatus for testing material friction coefficient under high loading condition |
| RU121589U1 (en) * | 2012-06-22 | 2012-10-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный политехнический университет" (ФГБОУ ВПО "СПбГУ") | DEVICE FOR DETERMINING POWDER Friction Coefficient in Non-Metallic Media |
| CN204630905U (en) * | 2014-12-22 | 2015-09-09 | 浙江工业大学 | The proving installation of circular ring structure hardware friction factor |
| CN105043976A (en) * | 2015-07-28 | 2015-11-11 | 南京航空航天大学 | Test device for dynamically measuring fretting pair frictional coefficient during fretting fatigue process and test method |
| CN205075606U (en) * | 2015-10-27 | 2016-03-09 | 安徽柳工起重机有限公司 | Leaf spring formula suspension with rubber bush structure |
| CN109668827A (en) * | 2019-01-23 | 2019-04-23 | 扬州市江都永坚有限公司 | A kind of antifriction apparatus and friction coefficient measurement method for testing friction power |
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