An electromagnetic friction and wear test device and a computer readable storage medium

Abstract

The embodiment of the application discloses an electromagnetic friction and wear test device and a computer readable storage medium, and relates to the technical field of electromagnetic friction. The device comprises a friction and wear device, a magnetic field generating device and a magnetic field detecting device. The magnetic field generating device comprises a single-pole electromagnet and a power supply. The power supply provides different output voltages for the single-pole electromagnet. The single-pole electromagnet generates different uniform magnetic fields under different output voltages to provide an electromagnetic environment. The friction and wear device is located in the uniform magnetic field and can perform a friction and wear test in the electromagnetic environment. The magnetic field detecting device is used for detecting the magnetic field strength of the uniform magnetic field. The application realizes the friction and wear test of a machine in different uniform magnetic field environments and evaluates the tribological performance of a lubricating material in different uniform magnetic field environments.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnetic friction, in particular to an electromagnetic friction and wear test device and a computer readable storage medium. BACKGROUND

[0002] In the process of using machinery, friction causes unnecessary energy consumption of machinery, and the wear caused by friction will cause additional damage to machinery, please refer to Figure 8 and Figure 9 , it is necessary to use a friction and wear tester to conduct friction and wear tests. Lubricating materials can effectively reduce unreasonable friction and wear, and it is also necessary to use a friction and wear tester to evaluate lubricating materials.

[0003] At present, the working environment of machinery is becoming more and more severe, and the electromagnetic environment has become a common working environment of machinery, which makes it important to conduct friction and wear tests and evaluate the tribological performance of lubricating materials in the electromagnetic environment.

[0004] The existing friction and wear tester cannot conduct friction and wear tests of machinery in the electromagnetic environment, and cannot evaluate the tribological performance of lubricating materials in the electromagnetic environment. SUMMARY

[0005] The purpose of the embodiment of the present application is to provide an electromagnetic friction and wear test device and a computer readable storage medium to provide an electromagnetic environment, realize friction and wear tests of machinery in different uniform magnetic field environments, and evaluate the tribological performance of lubricating materials in different uniform magnetic field environments.

[0006] To achieve the above purpose, the embodiment of the present application provides the following scheme:

[0007] An electromagnetic friction and wear test device, comprising:

[0008] a friction and wear device for conducting friction and wear tests;

[0009] a magnetic field generating device for generating a uniform magnetic field; the friction and wear device is installed in the uniform magnetic field to conduct friction and wear tests under the uniform magnetic field;

[0010] a magnetic field detection device for detecting the magnetic field strength;

[0011] The magnetic field generating device comprises:

[0012] a power supply connected to the single-pole electromagnet for providing an output voltage to the single-pole electromagnet;

[0013] A monopole electromagnet is installed on a base directly below a loading site of the friction and wear device, and the monopole electromagnet generates a uniform magnetic field under the output voltage; the loading site is used to fix an upper friction test piece in the friction and wear device.

[0014] A probe of the magnetic field detection device is arranged above the monopole electromagnet.

[0015] Optionally, the device further comprises:

[0016] A controller is connected with the friction and wear device, the magnetic field detection device and the power supply respectively, and is used to control the start and stop of the friction and wear device and the magnetic field detection device.

[0017] Optionally, the power supply comprises at least one of a direct current power supply and an alternating current power supply;

[0018] If the monopole electromagnet is powered by the direct current power supply, the monopole electromagnet generates a uniform magnetic field with a fixed magnetic field direction;

[0019] If the monopole electromagnet is powered by the alternating current power supply, the monopole electromagnet generates a uniform magnetic field with a variable magnetic field direction.

[0020] Optionally, if the power supply comprises a direct current power supply and an alternating current power supply, the controller is further used to control the switching between the direct current power supply and the alternating current power supply.

[0021] Optionally, the controller is further used to regulate the output voltage of the power supply; the output voltage is in a proportional relationship with the magnetic field strength of the uniform magnetic field, and the proportional coefficient is K.

[0022] Optionally, the magnetic field range of the uniform magnetic field is a region with a center of the monopole electromagnet as an origin and a diameter of X mm.

[0023] Optionally, the device further comprises:

[0024] A first fixing member is used to fix the magnetic field generation device;

[0025] A second fixing member is used to fix the magnetic field detection device.

[0026] Optionally, the device further comprises:

[0027] A perforated metal plate is installed on an upper surface of the monopole electromagnet;

[0028] Two fastening clamps are used to be installed on the perforated metal plate, and the two fastening clamps are used to fix lower friction test pieces; a plurality of hole positions are arranged on the perforated metal plate to change the installation distance of the two fastening clamps, so as to adapt to lower friction test pieces of different sizes.

[0029] The embodiment of the present application also provides a computer readable storage medium, wherein instructions are stored in the computer readable storage medium, and when the instructions are executed on a computer, the computer is caused to perform the operation of the controller in any one of the above.

[0030] According to the embodiment of the present application, the following technical effects are disclosed.

[0031] The embodiment of the present application provides an electromagnetic friction and wear test device and a computer readable storage medium, and the electromagnetic friction and wear test device comprises a friction and wear device, a magnetic field generating device and a magnetic field detecting device. The parts cooperate as follows: the magnetic field generating device comprises a single-pole electromagnet and a power supply, the power supply provides different output voltages for the single-pole electromagnet, the single-pole electromagnet generates different uniform magnetic fields under different output voltages to provide an electromagnetic environment, the friction and wear device is located in the uniform magnetic field and can perform a friction and wear test in the electromagnetic environment; and the magnetic field detecting device is used for detecting the magnetic field strength of the uniform magnetic field.

[0032] Therefore, the electromagnetic friction and wear test device provided by the embodiment of the present application realizes the friction and wear test of a machine in different uniform magnetic field environments and the evaluation of the tribological performance of a lubricating material in different uniform magnetic field environments. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0034] Figure 1 A structural schematic diagram of the electromagnetic friction and wear test device provided by the embodiment of the present application is shown in the figure.

[0035] Figure 2 A schematic diagram of the magnetic field strength and the output voltage provided by the embodiment of the present application is shown in the figure.

[0036] Figure 3 A structural schematic diagram of the porous metal plate and the fastening clamp provided by the embodiment of the present application is shown in the figure.

[0037] Figure 4 A structural schematic diagram of the detection probe and the single-pole electromagnet fixing device provided by the embodiment of the present application is shown in the figure.

[0038] Figure 5 A specific structural schematic diagram of the fixing device provided by the embodiment of the present application is shown in the figure.

[0039] Figure 6A schematic diagram of the friction coefficient and time provided by the embodiment of the present application;

[0040] Figure 7 A schematic diagram of the average friction coefficient and magnetic induction provided by the embodiment of the present application;

[0041] Figure 8 A front view of the existing friction and wear testing machine provided by the embodiment of the present application;

[0042] Figure 9 A rear view of the existing friction and wear testing machine provided by the embodiment of the present application.

[0043] Symbol explanation:

[0044] Single-pole electromagnet-1, power supply-2, perforated metal plate-3, fastening clamp-31, bolt-32, magnetic field detection device-4, probe-41, loading site-5, base-6, bracket-7. DETAILED DESCRIPTION

[0045] The structure and scenario described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application, and those skilled in the art can know that, with the appearance of new scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0046] It should be noted that, in the present application, the words such as "exemplary" or "for example" are used to represent examples, illustrations or descriptions. Any embodiment or design scheme described as "exemplary" or "for example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words such as "exemplary" or "for example" are intended to present the relevant concepts in a specific manner.

[0047] The purpose of the embodiments of the present application is to provide an electromagnetic friction and wear testing device and a computer readable storage medium, to provide an electromagnetic environment, to solve the problem that the existing friction and wear testing machine cannot perform friction and wear testing in an electromagnetic environment, and cannot evaluate the tribological performance of lubricating materials in an electromagnetic environment, to realize friction and wear testing of machinery in different uniform magnetic field environments, and to evaluate the tribological performance of lubricating materials in different uniform magnetic field environments.

[0048] When two objects in contact with each other are subjected to external force and do relative tangential motion or have a tendency to do relative tangential motion, a kind of motion resistance will be generated between the contact surfaces of the two objects. This resistance is called friction, and the phenomenon of generating such friction is called friction.

[0049] Wear is the result of friction, which means that the surface material of the friction object is continuously worn out or deformed during the friction process. Wear not only causes material loss but also reduces the service life of the instrument. In order to study the performance of the friction test piece in the electromagnetic environment, an electromagnetic friction and wear test device is needed.

[0050] An exemplary structure of an electromagnetic friction and wear test device includes a friction and wear device, a magnetic field generating device, and a magnetic field detection device. Wherein,

[0051] The friction and wear device is used for friction and wear test, the magnetic field generating device is used for generating uniform magnetic field, and the magnetic field detection device is used for detecting the magnetic field intensity. The friction and wear device is installed in the uniform magnetic field to perform the friction and wear test in the uniform magnetic field. The friction and wear device has an upper friction test piece and a lower friction test piece. The upper friction test piece can be installed on the loading part 5, and the lower friction test piece can be installed on the base 6.

[0052] A test sample to be tested is added between the upper friction test piece and the lower friction test piece. The test sample can be a magnetic lubricating material, such as magnetic fluid, magnetorheological fluid, and magnetorheological grease. The upper friction test piece and the lower friction test piece can be a cylinder with a diameter of 24 mm and a thickness of 7.9 mm, or a cuboid with a length of 50 mm, a width of 20 mm, and a height of 30 mm.

[0053] The devices are introduced as follows:

[0054] Please refer to Figure 1 The magnetic field generating device at least includes a single-pole electromagnet 1 and a power supply 2.

[0055] The power supply 2 is electrically connected with the single-pole electromagnet 1, and the power supply 2 is used to provide output voltage for the single-pole electromagnet 1.

[0056] The power supply 2 includes at least one of a direct current power supply and an alternating current power supply, and the type of the power supply 2 corresponds to the type of the single-pole electromagnet.

[0057] For example, if the single-pole electromagnet 1 is a direct current single-pole electromagnet, the power supply 2 can only include a direct current power supply; if the single-pole electromagnet 1 is an alternating current single-pole electromagnet, the power supply 2 can only include an alternating current power supply; if the single-pole electromagnet 1 includes both a direct current single-pole electromagnet and an alternating current single-pole electromagnet, the power supply 2 includes a direct current power supply and an alternating current power supply.

[0058] During the test process, if the direct current single-pole electromagnet is powered by the direct current power supply, the direct current single-pole electromagnet generates a uniform magnetic field with fixed magnetic field direction; if the alternating current single-pole electromagnet is powered by the alternating current power supply, the alternating current single-pole electromagnet generates a uniform magnetic field with changing magnetic field direction.

[0059] The magnetic field range of the uniform magnetic field is a region with the center of the single-pole electromagnet 1 as the origin and a diameter of X mm.

[0060] In one example, the magnetic field range of the uniform magnetic field extends 40 mm from the center of the single-pole electromagnet 1 to the periphery. The magnetic field range of the uniform magnetic field is determined by the size of the magnetic pole of the single-pole electromagnet 1, which can be selected when the single-pole electromagnet 1 is designed, but cannot be changed after the single-pole electromagnet 1 is designed and formed. When the geometry of the single-pole electromagnet 1 and the internal wound coil are completely determined, the size of the magnetic pole cannot be changed by changing the current and voltage of the power supply 2. However, different sizes of electromagnets can be selected according to the geometry, space size, friction occurrence mode, and magnetic field range requirements of the friction and wear device, i.e., the internal coil of the single-pole electromagnet 1 is rewound, and a uniform magnetic field range that meets the requirements is obtained.

[0061] The single-pole electromagnet 1 is installed on the base 6 of the friction and wear device, and the single-pole electromagnet 1 generates a uniform magnetic field under the above output voltage. The loading site 5 is used to fix the upper friction test piece in the friction and wear device.

[0062] In one example, the single-pole electromagnet 1 and the base 6 can be connected by bolts 32, buckles, magnetic attraction, etc., and the magnetic field direction of the uniform magnetic field is perpendicular to the direction of friction sliding of the upper friction test piece.

[0063] It should be noted that a bipolar electromagnet cannot be used in the embodiment of the present application, because if a bipolar electromagnet is used, its structure will make the upper friction test piece unable to pass through the bipolar electromagnet and rub against the lower friction test piece, and the friction test under the uniform magnetic field environment cannot be completed.

[0064] In another example, the single-pole electromagnet 1 can be a direct-current single-pole electromagnet or an alternating-current single-pole electromagnet. The selection of the direct-current single-pole electromagnet and the alternating-current single-pole electromagnet needs to be determined according to whether the magnetic field direction required by the friction test needs to change: if the magnetic field direction needs to change during the friction test and the influence of the change of the magnetic field direction on the friction test is ignored, an alternating-current single-pole electromagnet can be used. If the magnetic field direction does not need to change during the friction test, a direct-current single-pole electromagnet can be used.

[0065] Of course, in yet another example, the single-pole electromagnet 1 can simultaneously include a direct-current single-pole electromagnet and an alternating-current single-pole electromagnet, which can be switched to adapt to different requirements.

[0066] The magnetic field detection device 4 at least includes a probe 41. The probe 41 is arranged above the single-pole electromagnet 1.

[0067] Because the magnetic field detection device 4 is used to detect the magnetic field intensity of the area where the upper friction test piece and the lower friction test piece are rubbing, the probe 41 must be placed above the single electromagnet 1, i.e. above the lower friction test piece. If the probe 41 is placed in other positions, the error of the magnetic field intensity measurement will be increased.

[0068] The distance between the probe 41 and the single electromagnet 1 can be flexibly designed by those skilled in the art, as long as the space size is appropriate and the friction and wear device is allowed to rub in a certain way. The probe 41 should be as close as possible to the upper surface of the single electromagnet 1 to reduce the error in the process of measuring the uniform magnetic field intensity.

[0069] Specifically, the magnetic field detection device 4 can be a gauss meter, and the probe 41 has a Hall element. The working principle of the gauss meter is as follows: if a uniform magnetic field is applied in the vertical direction of the Hall element, an electric potential difference, called Hall voltage, will be generated in the direction perpendicular to the current and the magnetic field. The Hall voltage changes with the change of the magnetic field intensity. The stronger the magnetic field intensity, the higher the Hall voltage. The weaker the magnetic field intensity, the lower the Hall voltage.

[0070] The electromagnetic friction and wear test device described above provides an electromagnetic environment, and can realize the friction and wear test of a machine in different uniform magnetic field environments and evaluate the tribological performance of a lubricating material in different uniform magnetic field environments.

[0071] In other embodiments of the present application, the electromagnetic friction and wear test device in all the above embodiments can further comprise a controller.

[0072] The controller is electrically connected with the start-stop button of the friction and wear device, the start-stop button of the magnetic field detection device 4 and the switching button of the power supply 2. After the power supply 2 is turned on, the controller is used to control the start and stop of the friction and wear device and the magnetic field detection device 4.

[0073] In the embodiments of the present application, if the aforementioned power supply 2 comprises a direct current power supply and an alternating current power supply, the controller in all the above embodiments is further used to control the switching between the direct current power supply and the alternating current power supply: if the alternating current power supply is needed, the controller is switched to the alternating current power supply. If the direct current power supply is needed, the controller is switched to the direct current power supply.

[0074] In the embodiments of the present application, the controller in all the above embodiments is further used to regulate the output voltage of the power supply 2. The output voltage is in a proportional relationship with the magnetic field intensity of the uniform magnetic field, and the proportional coefficient is K.

[0075] In one example, please refer to Figure 2, the proportional coefficient between the ordinate magnetic induction intensity (magnetic field intensity) Gs and the abscissa output voltage of the power supply 2 is 60: taking the output voltage of 15V as an example, the corresponding magnetic induction intensity is 900Gs. The magnetic induction intensity ranges from 0 to 1500Gs, and the error is not more than ±5Gs. Of course, the skilled in the art can flexibly design the value of the proportional coefficient K according to the test needs, for example, 50, 70, 80, etc., which will not be repeated here.

[0076] In other embodiments of the present application, the electromagnetic friction and wear test device in all the above embodiments can further comprise a fixing member.

[0077] The first fixing member is used for fixing the magnetic field generating device.

[0078] The second fixing member is used for fixing the magnetic field detection device 4.

[0079] In one example, the first fixing member can fix the single-pole electromagnet 1 in the magnetic field generating device through a bolt 32, a buckle or magnetic attraction. The second fixing member can fix the probe 41 in the magnetic field detection device 4 through a bolt 32, a bracket, a buckle or magnetic attraction. The second fixing member can be a bracket 7.

[0080] In other embodiments of the present application, the electromagnetic friction and wear test device in all the above embodiments can further comprise a perforated metal plate 3.

[0081] The perforated metal plate 3 is installed on the upper surface of the single-pole electromagnet 1.

[0082] Two fastening clamps 31 are installed on the perforated metal plate 3, and the two fastening clamps 31 are used to fix the lower friction test piece. A plurality of hole positions are provided on the perforated metal plate 3 to change the installation distance of the two fastening clamps 31, so as to adapt to lower friction test pieces of different sizes.

[0083] In one example, please refer to Figure 3 and Figure 4 The perforated metal plate 3 is fixed on the upper surface of the single-pole electromagnet 1 through a bolt 32. The perforated metal plate 3 fixes the two fastening clamps 31 through a bolt 32. When the size of the lower friction test piece is large, the hole position with a long distance is selected to fix the two fastening clamps 31 to adapt to the large size of the lower friction test piece. When the size of the lower friction test piece is small, the hole position with a short distance is selected to fix the two fastening clamps 31 to adapt to the small size of the lower friction test piece.

[0084] In other embodiments of the present application, the perforated metal plate 3 described above can also be replaced with a plate made of other materials, as long as the size meets the requirements of the friction test.

[0085] Please refer to Figure 4 The probe 41 is placed on the upper surface of the single-pole electromagnet 1 through the bracket 7. Please refer to Figure 5The probe 41 can be fixed by the bolt 32 through the bracket 7. The position of the probe 41 can be adjusted by adjusting the relative position of the groove on the bracket 7 and the bolt 32.

[0086] The electromagnetic friction and wear test device can perform tests at least under two magnetic field strengths:

[0087] The first magnetic field strength, Figure 6 is a schematic diagram of the friction coefficient and time of the electromagnetic friction and wear test device in the first magnetic field strength according to the embodiment of the application. The magnetic fluid sample is added between the upper friction test piece and the lower friction test piece, the output voltage is 10V, the magnetic field strength of the uniform magnetic field is 600Gs, and the magnetic field strength error is not more than ±5Gs.

[0088] The second magnetic field strength, the magnetic fluid sample is added between the upper friction test piece and the lower friction test piece, the output voltage is 15V, the magnetic field strength of the uniform magnetic field is 900Gs, and the magnetic field strength error is not more than ±5Gs.

[0089] Real-time detection is performed by the magnetic field detection device 4, and the relationship between the longitudinal coordinate friction coefficient and the horizontal coordinate time (S) obtained by the friction and wear test device under different magnetic field strengths is as shown in Figure 6 . The curve of the friction coefficient and the time (S) when the magnetic field strength is 0Gs, the curve of the friction coefficient and the time (S) when the magnetic field strength is 600Gs, and the curve of the friction coefficient and the time (S) when the magnetic field strength is 900Gs are included.

[0090] Please refer to Figure 6 and Figure 7 , the friction coefficient of the magnetic fluid sample under the condition of the uniform magnetic field of 600Gs is more stable, and the average friction coefficient is lower than that under the condition of the uniform magnetic field of 0Gs, but under the condition of the uniform magnetic field of 900Gs, although the friction coefficient is also stable, the average friction coefficient is obviously higher than that under the condition of the uniform magnetic field of 0Gs, which shows that the same magnetic fluid sample can exhibit different tribological properties under different uniform magnetic field conditions.

[0091] The embodiment of the application also claims a computer readable storage medium, which stores instructions, when the instructions are run on a computer, the computer executes the operations performed by the controller in any one of the above.

[0092] In the specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other.

[0093] The principles and implementation manners of the embodiments of the present application are described by using specific examples in the present application, and the above examples are only used for helping to understand the method and the core idea of the embodiments of the present application; meanwhile, for the general technical personnel in the art, according to the idea of the embodiments of the present application, the specific implementation manners and application ranges will be changed. In conclusion, the content of the present application should not be understood as the limitation of the embodiments of the present application.

Claims

1. An electromagnetic friction and wear testing device, characterized in that: include: Friction and wear device, used for conducting friction and wear tests; A magnetic field generating device, used for generating a uniform magnetic field; The friction and wear device is installed in the uniform magnetic field to perform a friction and wear test under the uniform magnetic field; A magnetic field detection device for detecting the strength of the magnetic field; The magnetic field generating device comprises: a power supply connected to the monopole electromagnet and configured to provide an output voltage to the monopole electromagnet; a monopole electromagnet mounted on a base directly below a loading portion of the friction and wear device, the monopole electromagnet generating a uniform magnetic field under the output voltage; the loading portion being used to fix an upper friction test piece in the friction and wear device; The probe of the magnetic field detection device is arranged above the monopole electromagnet; a controller, connected to the friction and wear device, the magnetic field detection device, and the power supply, respectively, for controlling the start and stop of the friction and wear device and the magnetic field detection device, and further for regulating the output voltage of the power supply; The power supply includes at least one of a DC power supply and an AC power supply; If the DC power supply is used to power the monopole electromagnet, the monopole electromagnet generates a uniform magnetic field with a fixed magnetic field direction; If the monopole electromagnet is powered by the AC power supply, the monopole electromagnet generates a uniform magnetic field with changing magnetic field directions.

2. The electromagnetic friction and wear testing device according to claim 1, characterized in that: If the power supply includes a DC power supply and an AC power supply, the controller is further configured to control switching between the DC power supply and the AC power supply.

3. The electromagnetic friction and wear testing device according to claim 1, characterized in that: The output voltage is in direct proportion to the magnetic field strength of the uniform magnetic field, and the proportional coefficient is K.

4. The electromagnetic friction and wear testing device according to claim 1, characterized in that: The magnetic field range of the uniform magnetic field is: an area with the center of the monopole electromagnet as the origin and a diameter of X mm.

5. The electromagnetic friction and wear testing device according to claim 1, characterized in that: Also includes: a first fixing member, used to fix the magnetic field generating device; The second fixing member is used to fix the magnetic field detection device.

6. The electromagnetic friction and wear testing device according to claim 1, characterized in that: Also includes: a porous metal plate mounted on the upper surface of the monopole electromagnet; Two fastening fixtures are used to be installed on the porous metal plate, and the two fastening fixtures are used to fix the lower friction test piece; a plurality of holes are provided on the porous metal plate to change the installation distance between the two fastening fixtures to adapt to lower friction test pieces of different sizes.

7. A computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is executed on a computer, the computer is caused to execute the operation executed by the controller according to any one of claims 1 to 6.

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