CN113959909A

CN113959909A - Damping test device and method for grease

Info

Publication number: CN113959909A
Application number: CN202111224863.3A
Authority: CN
Inventors: 高辉; 林元平; 邓傲然
Original assignee: Shanghai Chuanggong Telecom Technology Co Ltd
Current assignee: Shanghai Chuanggong Telecom Technology Co Ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-01-21

Abstract

The invention provides a damping test device and a damping test method for grease. Wherein, the driving piece is connected with the base, rotates the piece and is located between driving piece and the base, rotates the first end and the base butt of piece, and the second end is connected with the driving piece, and the driving piece can drive and rotate the relative base rotation of piece. The driving piece is further used for being connected with the torsion testing piece, a grease storage area is formed between the first end and the base, and the grease storage area is used for containing grease. The damping testing device can be used for simulating the application environment of the damping grease, for example, the damping testing device is arranged in different temperature environments, so that the torque data of the rotating part in different temperature environments can be obtained, the damping performance of the grease at different temperatures can be obtained, the influence of the temperature on the damping performance of the grease can be known, the damping life of the grease can be judged, and the accuracy and the reliability of the judgment of the damping performance of the grease can be effectively improved.

Description

Damping test device and method for grease

Technical Field

The invention relates to the technical field of grease damping performance testing, in particular to a grease damping testing device and a testing method.

Background

The damping grease is a special purpose lubricating grease, is coated between two friction surfaces to play the roles of damping, lubricating, vibration damping and sealing, and has wide application in electronic devices. For example, it is often used in devices such as mobile phones, telescopes, microscopes, cameras, and measuring instruments.

In general, the damping performance of the damping grease is measured by the properties of the grease material itself, such as the viscosity, consistency, drop point or cone penetration of the grease. However, the damping grease has different damping performance in different use environments, such as different temperature conditions, so that the service life of the damping grease is greatly influenced by the temperature, and the damping performance is influenced by over-high or over-low temperature, and the service life of the damping grease is further shortened. The damping performance is judged through the self performance of the grease material, the use environment of the grease cannot be well simulated, and the judgment accuracy of the damping performance of the grease is low.

Disclosure of Invention

The invention provides a damping test device and a damping test method for grease, and aims to solve the problems that in the prior art, damping performance is judged through the self performance of a grease material, the use environment of the grease cannot be simulated well, and the judgment accuracy of the damping performance of the grease is low.

This application first aspect provides a damping testing arrangement of grease, includes: the torsion testing device comprises a base, a driving piece and a rotating piece, wherein the driving piece is connected with the base and is used for being connected with a torsion testing piece;

the rotating piece is positioned between the driving piece and the base, the first end of the rotating piece is abutted against the base, the second end of the rotating piece is connected with the driving piece, and the driving piece drives the rotating piece to rotate relative to the base;

a grease storage area is formed between the first end and the base and used for containing grease.

Wherein, when the driving piece drives and rotates the relative base rotation of piece, the grease can be located the grease reservoir, and the damping performance of grease can exert an influence to the rotating state between piece and the base, and then influences the rotating state of driving piece, that is to say, the damping performance of grease can influence the torsion size of driving piece. Therefore, the damping performance of the grease can be directly and accurately obtained by testing the torque data of the driving piece through the torque testing piece. And the device has simple structure, convenient operation and higher feasibility.

Simultaneously, can also realize the simulation to the application environment of damping grease through this damping testing arrangement, for example, make damping testing arrangement arrange in under the temperature environment of difference, can obtain the torsion data of rotating part under the different temperature environment, also obtain the damping performance of grease under the different temperatures, and then can learn the influence of temperature to grease damping performance, also realize the judgement to grease damping life-span, can further effectual promotion grease damping performance judgement's accuracy and reliability.

In a possible implementation manner, the base is provided with a raised connecting shaft, the first end is provided with a first connecting part, and the first connecting part is sleeved on the outer wall of the connecting shaft and is rotatably connected with the connecting shaft;

the inner wall of the first connecting part is provided with a storage groove, and the storage groove and the outer wall of the connecting shaft jointly form the grease storage area.

In one possible implementation, the storage groove is an annular groove provided around a circumference in which the first connection portion is provided.

In a possible implementation manner, a containing groove is formed in the base, and the connecting shaft is located in the containing groove;

the rotating piece protrudes towards one surface of the base to form the first connecting portion, and the first connecting portion extends into the accommodating groove.

In a possible implementation manner, the second end is provided with a second connecting part, and the second connecting part is provided with a limiting hole;

the driving part is provided with a rotating shaft matched with the limiting hole, and the driving part is connected with the rotating part through the matching of the rotating shaft and the limiting hole, so that the rotating shaft drives the rotating part to rotate.

In a possible implementation manner, an installation part is arranged on the outer wall of the driving part, an installation hole is formed in the installation part, and an installation column is arranged on the base;

the driving piece is connected with the base through the fastener and the mounting column in a matched mode.

The second aspect of the present application provides a damping test method for grease, which employs any one of the damping test apparatuses described above to perform a damping test on grease, the method including:

the grease is positioned in the grease storage area;

after the damping test devices are respectively placed at different preset temperatures, the driving piece drives the rotating piece to rotate relative to the base so as to obtain torque data of the driving piece;

and obtaining a test result according to the torque data.

In one possible implementation, after the positioning the grease in the grease storage area, the method further includes:

placing at least four damping test devices at normal temperature, and respectively obtaining first torque data of the driving piece;

with behind damping testing arrangement arranged in the default temperature, make the driving piece drive and rotate a relative base and rotate to obtain the torsion data of driving piece includes:

after one damping test device is placed at a first preset temperature, the driving piece drives the rotating piece to rotate relative to the base so as to obtain second torque data of the driving piece;

after one damping test device is placed at a second preset temperature, the driving piece drives the rotating piece to rotate relative to the base, so that third torque data of the driving piece are obtained; when the second preset temperature is higher than the first preset temperature and the damping test device is arranged at the first preset temperature and the second preset temperature, the rotating piece rotates relative to the base;

after one damping test device is placed at a third preset temperature, the driving piece drives the rotating piece to rotate relative to the base, so that fourth torque data of the driving piece is obtained;

after one damping test device is placed at a fourth preset temperature, the driving piece drives the rotating piece to rotate relative to the base, so that fifth torque data of the driving piece is obtained; when the damping test device is placed at the third preset temperature and the fourth preset temperature, the rotating part is static relative to the base;

the obtaining of the test result according to the torque data includes: and obtaining a test result according to the first torque data, the second torque data, the third torque data, the fourth torque data and the fifth torque data.

In a possible implementation manner, the obtaining a test result according to the first torque data, the second torque data, the third torque data, the fourth torque data, and the fifth torque data includes:

respectively comparing and obtaining the difference value of the second torque data, the third torque data, the fourth torque data and the fifth torque data with the first torque data of the corresponding damping test device;

and obtaining a test result according to the difference value.

In a possible implementation, the third preset temperature is lower than the first preset temperature.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a damping test apparatus according to an embodiment of the present disclosure;

fig. 2 is an exploded schematic view of a damping test apparatus according to an embodiment of the present disclosure;

fig. 3 is a schematic connection diagram of a damping test device and a torsion test piece according to an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view of a damping test apparatus according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a side of a rotating member facing a base according to an embodiment of the present disclosure;

FIG. 6 is a cross-sectional view of a rotating member according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a base according to an embodiment of the present disclosure;

FIG. 8 is another cross-sectional view of a damping test apparatus according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a side of a rotating element facing a driving element according to an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a driving member according to an embodiment of the present disclosure;

fig. 11 is a schematic flow chart of a damping test method for grease according to an embodiment of the present application.

Description of reference numerals:

100-a damping test device; 10-a base; 11-a connecting shaft;

12-a receiving groove; 20-a drive member; 21-a rotating shaft;

23-electrical connections; 30-a rotating member; 31-a first end;

311-a first connection; 3111-a storage tank; 3112-connecting holes;

32-a second end; 321-a second connecting portion; 3211-a limiting hole;

33-a body; 40-a grease storage area; 200-torsion test piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As in the background art, the damping performance of damping grease is often measured by testing the properties of the material itself. However, in actual use, the performance of the damping grease greatly changes under the influence of the use environment, for example, the damping performance of the damping grease is affected by too high or too low temperature of the environment, and further the service life of the damping grease is affected. Therefore, the damping performance of the damping grease can be judged by adopting the self-performance of the material, the simulation of the use environment of the damping grease can not be realized, the influence of the environment such as temperature on the damping performance of the grease can not be known, the damping performance of the damping grease can not be accurately judged, and the service life of the grease can not be judged.

In some cases, the damping performance of the damping grease may also be verified through extensive testing, such as applying the damping grease to the product in bulk, verifying the damping performance of the grease through long-term use, or summarizing the damping performance of the grease through the use of feedback. The investment cost is high, the time consumption is long, and the economic cost is increased.

Based on the above problems, the damping test device and the test method for the grease provided by the embodiment of the application can effectively simulate the use environment of the damping grease, accurately obtain the damping performance of the damping grease in different environments, and improve the accuracy of judgment on the damping performance of the grease.

The grease may be damping oil, damping grease or damping grease, and the damping test device and the test method for the grease provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a damping test device according to an embodiment of the present disclosure, fig. 2 is an exploded schematic diagram of a damping test device according to an embodiment of the present disclosure, fig. 3 is a schematic connection diagram of a damping test device according to an embodiment of the present disclosure and a torsion test piece, and fig. 4 is a cross-sectional view of a damping test device according to an embodiment of the present disclosure.

In a first aspect, the present embodiment provides a damping test apparatus 100 for grease, which is shown in fig. 1 and includes a base 10, a driving member 20, and a rotating member 30. The driving member 20 may be a motor, such as a stepping motor or a servo motor.

The driving member 20 is connected to the base 10, and in particular, as shown in fig. 2, the driving member 20 can be fixedly connected to the base 10 by a fastener (e.g., a fastener 50a) such as a screw.

The rotating member 30 is located between the driving member 20 and the base 10, the rotating member 30 includes a first end 31 and a second end 32 opposite to each other, the first end 31 of the rotating member 30 abuts against the base 10, and the second end 32 is connected to the driving member 20. The driving member 20 can drive the rotating member 30 to rotate relative to the base 10.

Referring to fig. 3, the driver 20 is further configured to connect to the torsion testing unit 200, so that the torsion testing unit 200 can test torsion data of the driver 20, and specifically, the driver 20 further includes an electrical connector 23 (see fig. 2), and the driver 20 can be connected to the torsion testing unit 200 through the electrical connector 23.

Referring to fig. 4, a grease reservoir 40 is formed between the first end 31 of the rotation member 30 and the base 10, and the grease reservoir 40 is used for containing grease. The grease storing area 40 may be a rotational connection portion between the rotating member 30 and the base 10.

In the testing process, when the driving member 20 drives the rotating member 30 to rotate relative to the base 10, the grease can be located in the grease storage area 40, the damping performance of the grease can affect the rotating state between the rotating member 30 and the base 10, and then the rotating state of the driving member 20 is affected, that is, the damping performance of the grease can affect the torque force of the driving member 20. Therefore, the torque data of the driving member 20 is tested by the torque test piece 200, and the damping performance of the grease can be directly and accurately obtained. And the damping test device 100 has a simple structure, is convenient to operate and has high feasibility.

Meanwhile, the damping test device 100 can also be used for simulating the application environment of the damping grease, for example, the damping test device 100 is arranged in different temperature environments, so that the torque data of the driving part 20 in different temperature environments can be obtained, the damping performance of the grease at different temperatures can also be obtained, the influence of the temperature on the damping performance of the grease can be further known, the judgment on the damping life of the grease can also be realized, and the accuracy and the reliability of the judgment on the damping performance of the grease can be further effectively improved.

In addition, compared with a verification method for applying the grease to products in batches, the damping testing device 100 directly simulates the application environment of the grease, so that the verification of the batches is reduced, the investment of the products is saved, the testing time is greatly shortened, and the economic cost is effectively reduced.

Fig. 5 is a schematic structural view of a side of a rotating member facing a base according to an embodiment of the present disclosure, and fig. 6 is a cross-sectional view of the rotating member according to the embodiment of the present disclosure.

In the embodiment of the present application, the base 10 has a protruding connecting shaft 11 (see fig. 4), and as shown in fig. 5, the first end 31 of the rotating member 30 has a first connecting portion 311, and the first connecting portion 311 is disposed on the outer wall of the connecting shaft 11 and rotatably connected to the connecting shaft 11 (see fig. 4). Specifically, the first connecting portion 311 may be provided with a connecting hole 3112 engaged with the connecting shaft 11, the connecting hole 3112 may be sleeved on the connecting shaft 11, and the connecting hole 3112 and the connecting shaft 11 are in clearance fit, so that the first connecting portion 311 may rotate relative to the connecting shaft 11.

As shown in fig. 5, the main body 33 and the first and second ends 31 and 32 (see fig. 9) of the rotating member 30 may be all in a disc-shaped structure, so that the structural stability of the rotating member 30 may be improved, the stability and reliability of the connection between the rotating member 30 and the base 10 may be further improved, and the structural stability of the whole damping test apparatus 100 may be improved.

Referring to fig. 6, a storage groove 3111 is opened on an inner wall of the first connection portion 311, and the storage groove 3111 forms a grease storage area 40 (see fig. 4) together with an outer wall of the connection shaft 11. Specifically, the storage groove 3111 may be opened on an inner wall of the connection hole 3112. Thus, when the rotating member 30 rotates relative to the base 10, the grease in the grease reservoir 40 can effectively damp the rotation of the rotating member 30, i.e., the driving member 20. The influence of the grease on the torque data of the driving part 20 is improved, so that the accuracy and reliability of judging the damping performance of the grease are improved.

Here, the storage groove 3111 may be an annular groove provided around the circumference of the first connection portion 311. For example, an annular groove may be formed in the inner wall of the connection hole 3112, and the annular storage groove 3111 may increase the capacity of the grease storage area 40, so that more grease may be disposed, the amount of grease disposed between the rotating member 30 and the base 10 is increased, and the contact area between the grease and the rotating member 30 and the base 10 is increased, thereby improving the effect of the grease on the torque data of the driving member 20, and further improving the accuracy and reliability of the grease damping performance determination.

Fig. 7 is a schematic structural diagram of a base provided in the embodiment of the present application, and fig. 8 is another cross-sectional view of a damping test apparatus provided in the embodiment of the present application.

In the embodiment of the present application, referring to fig. 7, the base 10 further has an accommodating groove 12, and the connecting shaft 11 is located in the accommodating groove 12. As shown in fig. 8, a first connection portion 311 is formed by protruding one surface of the rotating member 30 facing the base 10, and the first connection portion 311 extends into the receiving groove 12. Through the arrangement of the accommodating groove 12, when the grease in the grease storage area 40 overflows outwards, the grease can enter the accommodating groove 12, so that the leakage of the grease is prevented, and the damping effect of the grease due to the leakage of the grease is reduced or avoided.

Moreover, the first connecting portion 311 extends into the accommodating groove 12, so that the reliability and stability of connection between the rotating member 30 and the base 10 can be improved, the rotating member 30 can be more stable and reliable in the process of relative rotation with the base 10, the reliability and stability of the damping test device 100 are effectively improved, and the accuracy of the grease damping test is improved.

Fig. 9 is a schematic structural diagram of a side of a rotating element facing a driving element according to an embodiment of the present disclosure, and fig. 10 is a schematic structural diagram of a driving element according to an embodiment of the present disclosure.

Referring to fig. 9, the second end 32 of the rotating member 30 has a second connecting portion 321, the second connecting portion 321 has a limiting hole 3211, and as shown in fig. 10, the driving member 20 has a rotating shaft 21 matching with the limiting hole 3211, and the driving member 20 is connected to the rotating member 30 through the matching between the rotating shaft 21 and the limiting hole 3211, so that the rotating shaft 21 can drive the rotating member 30 to rotate.

The rotating shaft 21 can be inserted into the limiting hole 3211, and the rotating shaft 21 and the rotating member 30 do not rotate relatively, so that when the rotating shaft 21 rotates, the second connecting portion 321 can be driven to rotate, and the rotating member 30 can rotate.

Specifically, the cross-sectional shape of the position-limiting hole 3211 may be other than circular, such as rectangular, triangular or other irregular structures, and correspondingly, the cross-sectional shape of the rotating shaft 21 may match the shape of the position-limiting hole 3211. The rotation shaft 21 may be inserted into the position-limiting hole 3211, so that when the rotation shaft 21 rotates, the second connection portion 321 is driven to rotate, thereby rotating the rotation member 30.

The driving member 20 is connected with the rotating member 30 through the matching of the rotating shaft 21 and the limiting hole 3211, and the structure is simple and reliable, the realization is convenient, and the disassembly is convenient. The reliability and stability of the connection between the driving member 20 and the rotation member 30 can be effectively improved. Moreover, the structural design of the driving part 20 and the rotating part 30 is effectively simplified, the design and processing difficulty is reduced, and the working efficiency is improved.

In the embodiment of the present application, with continued reference to fig. 10, a mounting portion (e.g., mounting portion 22a in fig. 10) is disposed on an outer wall of the driving member 20, a mounting hole (e.g., mounting hole 221a in fig. 10) is disposed on the mounting portion, a mounting post (e.g., mounting post 13a in fig. 8) is disposed on the base 10, and the damping test apparatus 100 further includes a fastening member (e.g., fastening member 50a in fig. 8) respectively engaged with the mounting hole and the mounting post. The driving member 20 can be connected to the base 10 by the engagement of the fastener with the mounting post and the mounting hole.

Specifically, the fastening member may be a threaded fastening member having threads on an outer wall thereof, such as a screw, a bolt, etc., the mounting post has a threaded hole matching with the fastening member, and the fastening member can pass through the mounting hole and be screwed into the threaded hole of the mounting post, so that the driving member 20 is fixed on the base 10.

Through the cooperation of fastener and mounting hole and erection column, can dismantle driving piece 20 and base 10 and be connected, its simple structure is reliable, and the realization of being convenient for can effectively simplify the structural design of driving piece 20 and base 10, reduces the design and the processing degree of difficulty, improves work efficiency. And the driving part 20 can be conveniently detached, the damping test device 100 can be conveniently maintained, and the service life of the damping test device 100 is prolonged.

The number of the mounting portions may be two or more, for example, the outer wall of the driving member 20 may be provided with a mounting portion 22a and a mounting portion 22b, and the two mounting portions may be respectively provided with a corresponding mounting hole 221a and a corresponding mounting hole 221 b.

The number of the mounting posts may also be two or more, for example, the base 10 may be provided with mounting

posts

13a and 13b (shown in fig. 8), and it should be understood that the number of the mounting posts corresponds to the number of the mounting holes.

Accordingly, the number of fasteners corresponds to the number of mounting holes and mounting posts, for example, the damping test apparatus 100 may include the

fasteners

50a and 50 b.

Fig. 11 is a schematic flow chart of a grease damping test method according to an embodiment of the present application.

A second aspect of the embodiment of the present application further provides a damping test method for grease, which is shown in fig. 11, where the damping test device 100 provided above is used in the test method to test the damping performance of grease. The method comprises the following steps:

s101: the grease is located in the grease storage area.

The grease can be directly placed in the grease storage area 40, or the grease can also be directly placed in the accommodating groove, so that the driving member 20 drives the rotating member 30 to rotate relative to the base 10, and the grease is located in the grease storage area.

S102: after the damping testing device is respectively arranged at different preset temperatures, the driving piece drives the rotating piece to rotate relative to the base so as to obtain torque data of the driving piece.

The damping test device 100 may be placed in an incubator with different set temperatures, so that the damping test device 100 is at different preset temperatures. The driving member 20 is powered on to start the rotation of the driving member 20, and the rotation of the driving member 20 drives the rotation member 30 to rotate together with the base 10. The torque tester 200 performs a test of the torque data of the driver 20 while the driver 20 rotates, thereby obtaining the torque data of the driver 20.

S103: and obtaining a test result according to the torque data.

The damping performance of the grease can be judged according to the numerical value of the torque data. After the damping testing device is arranged at different preset temperatures, the torsion data obtained by testing, namely the damping performance of the grease at different temperatures, can reflect the influence of different temperatures on the damping performance of the grease, so that the damping service life of the grease can be judged, and the accuracy and reliability of the judgment on the damping performance of the grease can be further effectively improved.

Specifically, after the grease is located in the grease storing area 40, that is, after step S101, the damping test method further includes:

s1011: and (3) placing at least four damping test devices at normal temperature, and respectively obtaining first torque data of the driving piece.

For example, four damping test apparatuses 100 are taken as an example. The driving member 20 of each damping test device 100 is connected to the torsion testing unit 200, so that the torsion testing unit 200 can perform torsion testing on the driving member 20. The driving member 20 is powered on to start rotating the driving member 20 and drive the rotating member 30 to rotate together relative to the base 10, and at this time, the torque testing member 200 performs a torque data test on the driving member 20, so as to obtain first torque data of the driving member 20 in the four damping test devices 100, respectively.

After the damping test apparatus 100 is placed at the preset temperature, the driving element 20 drives the rotating element 30 to rotate relative to the base 10, so as to obtain the torque data of the driving element 20, that is, the step S102 specifically includes:

s1021: after one of the damping test devices is placed at a first preset temperature, the driving part drives the rotating part to rotate relative to the base so as to obtain second torque data of the driving part.

When the temperature is below the first predetermined temperature, the damping test apparatus 100 is in an operating state, that is, the driving member 20 drives the rotating member 30 to rotate relative to the base 10. For example, one of the damping test devices 100 may be placed in a temperature chamber having a first predetermined temperature, such as-20 ℃, while the driving member 20 is powered to rotate and drive the rotating member 30 to rotate relative to the base 10. The number of rotations of the driving member 20 can be selectively set according to the requirements of the scene, for example, 3650 rotations can be performed.

After the rotation is completed, the damping test device 100 is taken out from the temperature box and placed at normal temperature, and then the driving member 20 is connected to the torque test piece 200, and at the same time, the driving member 20 is powered on again to rotate, and the driving member 20 is driven to rotate relative to the base 10. At this time, the torque tester 200 performs a torque data test on the driving member 20 to obtain a second torque data of the driving member 20.

S1022: after one of the torque force testing devices is placed at a second preset temperature, the driving piece drives the rotating piece to rotate relative to the base, so that third torque force data of the driving piece can be obtained.

When the second preset temperature is lower than the first preset temperature, the damping testing apparatus 100 is also in a working state, that is, the driving member 20 drives the rotating member 30 to rotate relative to the base 10, and the second preset temperature is higher than the first preset temperature. For example, one of the damping test devices 100 is placed in a temperature chamber having a temperature higher than a first predetermined temperature, such as 98 ℃. At the same time, the driving member 20 is powered to rotate, and the rotating member 30 is driven to rotate relative to the base 10. The number of rotations of the driving member 20 may be the same as the number of rotations of the driving member 20 in step S1021, for example, 3650 rotations may be performed. Alternatively, the number of rotations of the driving member 20 can be selectively set according to the requirements of the scene.

After the rotation is completed, the damping test device 100 is taken out from the temperature chamber and placed at normal temperature, and then the driving member 20 is connected to the torque test member 200, and at the same time, the driving member 20 is powered on again to rotate, and the rotating member 30 is driven to rotate relative to the base 10. At this time, the torque tester 200 performs a torque data test on the driving member 20 to obtain a third torque data of the driving member 20.

S1023: after one of the damping test devices 100 is placed at the third predetermined temperature, the driving member 20 drives the rotating member 30 to rotate relative to the base 10, so as to obtain a fourth torque data of the driving member 20.

At a third preset temperature, the rotating member 30 is stationary relative to the base 10, and the whole damping test apparatus 100 is in a stationary state. Specifically, the damping test device 100 is placed in a temperature chamber and stored for a predetermined period of time, and the temperature of the temperature chamber is maintained at a third predetermined temperature, which may be-40 ℃. The time for storing the damping test device 100 in the temperature box may be set according to specific requirements of a scene, for example, the time for storing may be 72 hours.

After the storage is finished, the damping test device 100 is taken out from the temperature box and placed at normal temperature, then the driving member 20 is connected with the torsion test member 200, and at the same time, the driving member 20 is powered on to rotate, and the rotating member 30 is driven to rotate relative to the base 10. At this time, the torque tester 200 performs a torque data test on the driving member 20 to obtain fourth torque data of the driving member 20.

S1024: after one of the damping test devices 100 is placed at the fourth predetermined temperature, the driving member 20 drives the rotating member 30 to rotate relative to the base 10, so as to obtain fifth torque data of the driving member 20.

Wherein, the fourth preset temperature is higher than the third preset temperature, and for example, the fourth preset temperature may be 98 ℃. At the fourth preset temperature, the rotating member 30 is still stationary relative to the base 10, i.e. the driving member 20 is not powered on, and the whole damping test device 100 is still in a stationary state. The damping test device 100 is placed in a temperature box for a predetermined length of time and the temperature box is maintained at a fourth predetermined temperature. The storage time of the damping test apparatus 100 at the fourth preset temperature may be selectively set according to specific requirements of a scene, for example, the storage time of the fourth preset temperature may be 48 hours.

After the storage is finished, the damping test device 100 is taken out from the temperature box and is placed at the normal temperature, then the driving member 20 is connected with the torsion test piece 200, and at the same time, the driving member 20 is powered on to rotate, and the rotating member 30 is driven to rotate relative to the base 10. At this time, the torque tester 200 performs a torque data test on the driving member 20 to obtain fifth torque data of the driving member 20.

It should be noted that step S1011, step S1021, step S1022, step S1023, and step S1024 may be performed simultaneously, or may be performed successively, where in this embodiment, the order of performing successively is not limited.

Step S103 obtains a test result according to the torque data, and specifically includes:

s1031: and obtaining a test result according to the first torque data, the second torque data, the third torque data, the fourth torque data and the fifth torque data.

When the grease works under more extreme temperature conditions, such as working at higher temperature or lower temperature, the damping performance of the grease can be changed to a certain extent. Alternatively, the damping properties of the grease may change after storage for a period of time at more extreme temperatures, such as after storage at lower or higher temperatures, and when it is reused.

Therefore, the relationship among the first torque data, the second torque data, the third torque data, the fourth torque data and the fifth torque data is comprehensively analyzed. For example, the influence on the damping performance of the grease when the grease works at the first preset temperature can be obtained by analyzing the comparison relation between the second torque data and the first torque data. Correspondingly, the influence on the damping performance of the grease when the hydraulic motor works at the second preset temperature can be obtained by comparing and analyzing the third torque data and the first torque data. And the fourth torque data and the first torque data are compared and analyzed, so that the influence on the damping performance of the grease after the fourth torque data and the first torque data are stored for a certain time at a third preset temperature can be obtained. Correspondingly, the influence of the fifth torque data and the grease damping performance after the fifth torque data and the first torque data are stored for a certain time at the fourth preset temperature can be obtained through comparative analysis.

The preset temperature can be an extreme temperature value, for example, the first preset temperature can be-20 ℃, the second preset temperature can be 98 ℃, the third preset temperature can be-40 ℃, and the fourth preset temperature can be 98 ℃, so that the comprehensive test result can reflect the change of the damping performance of the grease under the extreme high-temperature or low-temperature condition, namely the simulation of the working or storage state of the grease under the high-temperature and low-temperature environment can be realized, the service life of the grease under the high-temperature and low-temperature environment can be tested, and the accuracy of judging the service life of the grease can be further improved.

Specifically, obtaining the test result according to the first torque data, the second torque data, the third torque data, the fourth torque data, and the fifth torque data may include:

and respectively comparing and obtaining the difference value between the second torque data, the third torque data, the fourth torque data and the fifth torque data and the corresponding first torque data of the damping test device 100.

And obtaining a test result according to the difference.

That is, the second torque data is compared with the corresponding first torque data of the damping test device 100 to obtain a first difference. And comparing the third torque data with the corresponding first torque data of the damping test device 100 to obtain a second difference value. And comparing the fourth torque data with the corresponding first torque data of the damping test device 100 to obtain a third difference value. And comparing the fifth torque data with the corresponding first torque data of the damping test device 100 to obtain a fourth difference value.

When the first difference, the second difference, the third difference and the fourth difference simultaneously satisfy a certain condition, and are within a certain reference value range, the damping performance of the grease is better, and the grease reaches the qualified standard.

The specific data of the reference value can be selected and set according to specific grease performance indexes or scene requirements. Taking the first difference obtained by comparing the second torque data with the first torque data as an example, the reference value may be 18gf.cm, the average value of the first torque data of the damping test device 100 is 723gf.cm, the measured value of the second torque data is 710gf.cm, the first difference 13gf.cm may be obtained, the data is smaller than the reference value 18gf.cm, and so on, when the first difference, the second difference, the third difference and the fourth difference are all smaller than 18gf.cm, the damping performance of the grease is better, and the grease has a higher high and low temperature life, so as to meet the requirements of customers.

In the embodiment of the present application, the third preset temperature may be lower than the first preset temperature, so as to better simulate the working and storage environment of grease. For example, in the actual application process of the grease, especially in a low-temperature environment, the temperature condition of the storage environment of the grease is generally lower than that of the working environment of the grease, so that the third preset temperature is lower than the first preset temperature, the actual working and storage environment of the grease can be closer, and the accuracy and reliability of the grease damping performance test can be further improved.

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", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral to one another; either directly or indirectly through intervening media, may be used in either the internal or the external relationship of the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. 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.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The damping testing device for the grease is characterized by comprising a base, a driving piece and a rotating piece, wherein the driving piece is connected with the base and is used for being connected with a torsion testing piece;

2. The damping test device for the grease according to claim 1, wherein the base is provided with a raised connecting shaft, the first end is provided with a first connecting part, and the first connecting part is sleeved on the outer wall of the connecting shaft and is rotatably connected with the connecting shaft;

3. The apparatus for testing damping of grease of claim 2, wherein the storage groove is an annular groove disposed around a circumference of the first connection portion.

4. The damping test device for the grease according to claim 2 or 3, wherein the base is provided with a containing groove, and the connecting shaft is positioned in the containing groove;

5. The damping test device for the grease according to any one of claims 1 to 3, wherein the second end is provided with a second connecting part, and the second connecting part is provided with a limiting hole;

6. The damping test device for the grease as claimed in any one of claims 1 to 3, wherein the outer wall of the driving member is provided with a mounting portion, the mounting portion is provided with a mounting hole, and the base is provided with a mounting column;

7. A method for testing the damping of grease, which is characterized in that the damping test device of any one of the claims 1 to 6 is used for testing the damping of grease, and the method comprises the following steps:

the grease is positioned in the grease storage area;

and obtaining a test result according to the torque data.

8. The method for testing the damping of grease of claim 7 wherein after the grease is placed in the grease storage area, the method further comprises:

with behind the damping testing arrangement arranged in different preset temperatures, make the driving piece drive and rotate a relative base and rotate to obtain the torque data of driving piece includes:

9. The method for testing damping of grease according to claim 8, wherein the obtaining of the test result according to the first torque data, the second torque data, the third torque data, the fourth torque data and the fifth torque data comprises:

and obtaining a test result according to the difference value.

10. The method for testing the damping of grease according to claim 9, wherein the third predetermined temperature is lower than the first predetermined temperature.