阅读说明：本技术 摩擦试验机 (Friction testing machine ) 是由 陈禹吉 秦力 李远哲 王军宇 于 2021-09-27 设计创作，主要内容包括：本发明公开一种摩擦试验机,所述摩擦试验机包括壳体、温度调节组件、湿度调节组件、气体浓度调节组件和检测组件,壳体具有腔室,温度调节组件设在腔室内,以用于调节腔室内的温度,湿度调节组件与腔室连通,以用于调节腔室内的湿度,气体浓度调节组件与腔室连通,以用于调节腔室内气体的浓度,检测组件设在腔室内,检测组件适于与被测件相连,以便检测被测件的摩擦性能。本发明的摩擦试验机具有结构简单、成本低廉、实验结果准确等优点。(The invention discloses a friction testing machine which comprises a shell, a temperature adjusting component, a humidity adjusting component, a gas concentration adjusting component and a detecting component, wherein the shell is provided with a cavity, the temperature adjusting component is arranged in the cavity and used for adjusting the temperature in the cavity, the humidity adjusting component is communicated with the cavity and used for adjusting the humidity in the cavity, the gas concentration adjusting component is communicated with the cavity and used for adjusting the concentration of gas in the cavity, the detecting component is arranged in the cavity, and the detecting component is suitable for being connected with a tested piece so as to detect the friction performance of the tested piece. The friction tester has the advantages of simple structure, low cost, accurate experimental result and the like.)

1. A friction tester, comprising:

a housing having a chamber;

the temperature adjusting assembly is arranged in the cavity and used for adjusting the temperature in the cavity;

a humidity adjustment assembly in communication with the chamber for adjusting humidity within the chamber;

a gas concentration adjustment assembly in communication with the chamber for adjusting a concentration of a gas within the chamber;

the detection assembly is arranged in the cavity and is suitable for being connected with a detected piece so as to detect the friction performance of the detected piece.

2. The friction tester of claim 1, further comprising a suction assembly in communication with the chamber for drawing gas from within the chamber.

3. The friction tester of claim 1, wherein the temperature adjustment assembly comprises:

the refrigerating unit is arranged in the cavity to refrigerate the cavity;

and the heating unit is arranged in the cavity to heat the cavity.

4. The friction tester of claim 1, wherein the humidity adjustment assembly comprises:

a drying unit in communication with the chamber to dry the chamber;

a humidification unit in communication with the chamber to humidify the chamber.

5. The friction tester of claim 4, wherein the gas concentration adjustment assembly comprises:

a first storage unit for storing an experimental gas, the first storage unit being in communication with the chamber to provide the experimental gas into the chamber:

a second storage unit for storing a non-experimental gas, the second storage unit being in communication with the chamber for adjusting a concentration of the experimental gas within the chamber.

6. The friction tester of claim 5, wherein the first storage unit is in communication with the humidity conditioning assembly such that the humidity conditioning assembly conditions the humidity within the chamber via the test gas.

7. The friction tester according to claim 6, further comprising a main duct, a first duct, and a second duct, the main duct communicating with the first storage unit, the first duct communicating with the humidifying unit, the second duct communicating with the drying unit, the first duct and the second duct having a first state in which the first duct and the main duct communicate and the second duct are disconnected, and a second state in which the second duct and the main duct communicate and the first duct and the main duct are disconnected.

8. The friction tester of claim 1, wherein the detection assembly comprises:

the test table is movably arranged in the cavity and is suitable for mounting the tested piece, and the test table can drive the tested piece to rotate or move in the cavity;

the connecting piece is at least partially arranged in the cavity, and one end of the connecting piece is in abutting fit with the measured piece;

and the first detection unit is connected with the other end of the connecting piece so as to detect the friction performance of the detected piece.

9. The friction tester of claim 1, further comprising a second detection unit disposed within the chamber to detect at least one of a gas concentration, a temperature, and a humidity within the chamber.

10. The friction tester of any of claims 1-9, wherein the housing bottom is provided with a drain opening that communicates with the chamber so that water within the chamber drains out of the chamber.

Technical Field

The invention relates to the technical field of abrasion tests, in particular to a friction tester.

Background

Friction is the most common phenomenon in life, and is divided into beneficial friction and harmful friction, the beneficial friction includes braking of an automobile, polishing of parts, friction transmission and the like, and the harmful friction causes part abrasion, reduces working life, increases resistance, reduces energy utilization efficiency and the like.

In the related art, the friction testing machine cannot simulate the working environment of the tested piece, the experimental result is inaccurate, and the error of the experimental result is large.

Disclosure of Invention

The present invention is based on the discovery and recognition by the inventors of the following facts and problems:

the friction performance of the material not only depends on the physical and chemical properties of the material, but also is closely related to the environmental factors such as the working temperature, the humidity, the atmosphere and the like of the material. During oil lubrication, the temperature of the material can rise due to heat generated by friction during actual work, so that the viscosity of the lubricating oil is reduced, the bearing capacity of the lubricating oil is affected, and a lubricating film can be broken when the lubricating film is severe, so that the lubricating is ineffective, and an experimental result is inaccurate. And influenced by vapor in the atmospheric environment in the frictional wear experiment, measured a surface can form the water film, also can exert an influence to the experimental result, in addition, experimental sample receives oxygen influence surface can form the oxide film in the air, can't simulate the friction of the real contact surface of material.

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the embodiment of the invention provides the friction testing machine which can simulate the working environment of the tested piece and has accurate experimental results.

The friction tester of the embodiment of the invention comprises: a housing having a chamber; the temperature adjusting assembly is arranged in the cavity and used for adjusting the temperature in the cavity; a humidity adjustment assembly in communication with the chamber for adjusting humidity within the chamber; a gas concentration adjustment assembly in communication with the chamber for adjusting a concentration of a gas within the chamber; the detection assembly is arranged in the cavity and is suitable for being connected with a detected piece so as to detect the friction performance of the detected piece.

The friction testing machine provided by the embodiment of the invention is provided with the temperature adjusting component, the humidity adjusting component and the gas concentration adjusting component, so that the temperature, the humidity and the gas concentration in the cavity are adjusted, the real working environment of a tested piece is simulated, and the experimental result is ensured.

In some embodiments, the friction tester further comprises a gas evacuation assembly in communication with the chamber for evacuating gas within the chamber.

In some embodiments, the temperature adjustment assembly comprises: the refrigerating unit is arranged in the cavity to refrigerate the cavity; and the heating unit is arranged in the cavity to heat the cavity.

In some embodiments, the humidity conditioning assembly comprises: a drying unit in communication with the chamber to dry the chamber; a humidification unit in communication with the chamber to humidify the chamber.

In some embodiments, the gas concentration adjustment assembly comprises: a first storage unit for storing an experimental gas, the first storage unit being in communication with the chamber to provide the experimental gas into the chamber: a second storage unit for storing a non-experimental gas, the second storage unit being in communication with the chamber for adjusting a concentration of the experimental gas within the chamber.

In some embodiments, the first storage unit is in communication with the humidity adjustment assembly such that the humidity adjustment assembly adjusts the humidity within the chamber via the test gas.

In some embodiments, the friction tester further includes a main duct, a first duct, and a second duct, the main duct communicating with the first storage unit, the first duct communicating with the humidifying unit, the second duct communicating with the drying unit, the first duct and the second duct having a first state in which the first duct communicates with the main duct and the second duct is disconnected, and a second state in which the second duct communicates with the main duct and the first duct is disconnected.

In some embodiments, the detection component comprises: the test table is movably arranged in the cavity and is suitable for mounting the tested piece, and the test table can drive the tested piece to rotate or move in the cavity; the connecting piece is at least partially arranged in the cavity, and one end of the connecting piece is in abutting fit with the measured piece; and the first detection unit is connected with the other end of the connecting piece so as to detect the friction performance of the detected piece.

In some embodiments, the friction tester further comprises a second detection unit disposed within the chamber to detect at least one of a gas concentration, a temperature, and a humidity within the chamber.

In some embodiments, the bottom of the housing is provided with a drain port that communicates with the chamber so that water within the chamber drains out of the chamber.

Drawings

Fig. 1 is a schematic structural view of a friction tester according to an embodiment of the present invention.

Fig. 2 is a partial schematic view of a detection assembly of the friction tester according to an embodiment of the present invention.

Reference numerals:

a friction tester 100;

a housing 1; a chamber 11; a drain port 12;

a temperature adjusting assembly 2; a refrigeration unit 21; a heating unit 22;

a humidity adjustment component 3; a drying unit 31; a humidifying unit 32; an ultrasonic atomizer 321; a water storage tank 322; a water supply tank 323;

a gas concentration adjusting assembly 4; a first storage unit 41; a second storage unit 42; a main pipe 43; a first valve 431; a first conduit 44; a second valve 441; a second conduit 45; a third valve 451; a fourth valve 46;

a detection component 5; a test stand 51; a connecting member 52; the first detection unit 53; a holding portion 54; a slider 55;

an air extraction assembly 6; a second detection unit 7; a controller 8; and an accumulator 9.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A friction tester according to an embodiment of the present invention will be described below with reference to the drawings.

As shown in fig. 1 to 2, the friction tester according to the embodiment of the present invention includes a housing 1, a temperature adjusting unit 2, a humidity adjusting unit 3, a gas concentration adjusting unit 4, and a detecting unit 5.

The housing 1 has a chamber 11. The temperature adjusting assembly 2 is provided in the chamber 11 for adjusting the temperature in the chamber 11. Specifically, as shown in fig. 1, the housing 1 has a hemispherical structure, and the temperature adjusting assembly is disposed inside the chamber 11, thereby adjusting the temperature inside the chamber 11 to a first preset value.

The humidity adjustment assembly 3 communicates with the chamber 11 for adjusting the humidity within the chamber 11. Specifically, as shown in fig. 1, the humidity adjusting assembly 3 communicates with the chamber 11 through a pipe, thereby adjusting the humidity inside the chamber 11 to a second preset value.

The gas concentration regulating assembly 4 communicates with the chamber 11 for regulating the concentration of the gas within the chamber 11. Specifically, as shown in fig. 1, the gas concentration adjusting assembly 4 communicates with the chamber 11 through a pipe, thereby adjusting the gas concentration inside the chamber 11 to a third preset value.

The detection assembly 5 is arranged in the cavity 11, and the detection assembly 5 is suitable for being connected with a detected piece so as to detect the friction performance of the detected piece.

The friction testing machine 100 provided by the embodiment of the invention is provided with the temperature adjusting component 2, the humidity adjusting component 3 and the gas concentration adjusting component 4, and adjusts the temperature, the humidity and the gas concentration in the cavity 11, so that the real working environment of a tested piece is simulated, the accuracy of an experimental result is improved, and the experimental error is reduced.

The friction tester 100 further comprises a gas evacuation assembly 6, the gas evacuation assembly 6 being in communication with the chamber 11 for evacuating gas from within the chamber 11. Specifically, as shown in fig. 1, the gas-extracting assembly 6 may be a vacuum machine disposed outside the housing 1 and communicating with the chamber 11, so that the vacuum machine can extract the gas in the chamber 11.

In some embodiments, the temperature regulation assembly 2 includes a refrigeration unit 21 and a heating unit 22.

The cooling unit 21 is provided in the chamber 11 to cool the chamber 11, and the heating unit 22 is provided in the chamber 11 to heat the chamber 11. Specifically, as shown in fig. 1, the refrigeration unit 21 is a water cooler, the heating unit 22 is a heater, and both the water cooler and the heater are disposed in the chamber 11, and when the temperature in the chamber 11 deviates from a first preset value, the refrigeration unit 21 or the heating unit 22 is turned on, and the temperature in the chamber 11 is readjusted to the first preset value, so as to ensure the temperature in the chamber 11 to reduce experimental errors.

In some embodiments, the humidity adjustment assembly 3 includes a drying unit 31 and a humidifying unit 32.

The drying unit 31 communicates with the chamber 11 to dry the chamber 11, and the humidifying unit 32 communicates with the chamber 11 to humidify the chamber 11. Specifically, as shown in fig. 1, the drying unit 31 is a dryer, the humidifying unit 32 includes an ultrasonic atomizer 321, a water storage tank 322, a water supply tank 323, and a water pump (not shown), the ultrasonic atomizer 321 is disposed in the water storage tank 322, the water supply tank 323 has ultrapure water therein, the water pump is disposed in the water supply tank 323, the water storage tank 322 and the water supply tank 323 are communicated through a pipeline, the water in the water supply tank 323 is pumped into the water storage tank 322 by the water pump, and the dryer and the water storage tank 322 are both communicated with the chamber 11, so that when the humidity in the chamber 11 deviates from a second preset value, the drying unit 31 or the humidifying unit 32 is turned on to readjust the humidity in the chamber 11 to the second preset value, so as to ensure the humidity in the chamber 11 to reduce experimental errors.

In some embodiments, the gas concentration adjustment assembly 4 includes a first storage unit 41 and a second storage unit 42.

The first storage unit 41 is used for storing the experimental gas, the first storage unit 41 is communicated with the chamber 11 to provide the experimental gas into the chamber 11, the second storage unit 42 is used for storing the non-experimental gas, and the second storage unit 42 is communicated with the chamber 11 to adjust the concentration of the experimental gas in the chamber 11. Specifically, as shown in fig. 1, the experimental gas includes, but is not limited to, nitrogen, oxygen, carbon dioxide, etc., the non-experimental gas may be any gas except the experimental gas, a first air pump (not shown) is disposed in the first storage unit 41, a second air pump (not shown) is disposed in the second storage unit 42, when the gas concentration in the chamber 11 is lower than a third preset value, the first air pump is turned on, the experimental gas is delivered to the chamber 11 through the first storage unit 41, and when the gas concentration in the chamber 11 is lower than the third preset value, the second air pump is turned on, and the non-experimental gas is delivered to the chamber 11 through the second storage unit 42, so as to dilute the experimental gas concentration.

In some embodiments, the first storage unit 41 communicates with the humidity adjustment assembly 3 so that the humidity adjustment assembly 3 adjusts the humidity in the chamber 11 through the experimental gas. Therefore, the humidity and the gas concentration in the chamber 11 can be adjusted simultaneously, the preparation time of the experiment is shortened, and the efficiency of the experiment is improved.

In some embodiments, the friction tester 100 further includes a main duct 43, a first duct 44, and a second duct 45, the main duct 43 communicating with the first storage unit 41, the first duct 44 communicating with the humidifying unit 32, the second duct 45 communicating with the drying unit 31, the first duct 44 and the second duct 45 having a first state in which the first duct 44 and the main duct 43 communicate and the second duct 45 and the main duct 43 are disconnected, and a second state in which the second duct 45 and the main duct 43 communicate and the first duct 44 and the main duct 43 are disconnected. Specifically, as shown in fig. 1, an air inlet of the main pipe 43 is connected to the first storage unit 41, air inlets of the first pipe 44 and the second pipe 45 are connected to an air outlet of the main pipe 43, air outlets of the first pipe 44 and the second pipe 45 are connected to the chamber 11, the main pipe 43 is provided with a first valve 421, the first pipe 44 is provided with a second valve 441, the second pipe 45 is provided with a third valve 451, in the first state, the humidity in the chamber 11 is low, the third valve 451 is closed, the first valve 421 and the second valve 441 are opened, in the second state, the humidity in the chamber 11 is high 421, the second valve 441 is closed, and the first valve 451 and the third valve 451 are opened, so as to adjust the humidity in the chamber 11.

It is understood that the fourth valve 46 may be provided on a pipe of the drying unit 31 communicating with the chamber 11 to control the opening and closing of the pipe of the drying unit 31, and the first valve 421, the second valve 441, the third valve 451, and the fourth valve 46 may be solenoid valves.

In some embodiments, the detection assembly 5 comprises: a test station 51, a connection member 52 and a first inspection unit 53.

The testing platform 51 is movably disposed in the chamber 11, the testing platform 51 is adapted to mount a tested object, and the testing platform 51 can rotate or move the tested object in the chamber 11. Specifically, as shown in fig. 1, the test platform 51 is rotatably or movably disposed in the chamber 11, and an upper end surface of the test platform 51 is a test surface on which the object to be tested is fixed and rotates or moves with the test platform 51.

At least part of the connecting piece 52 is arranged in the cavity 11, and one end of the connecting piece 52 is in abutting fit with the measured piece. Specifically, as shown in fig. 1-2, the lower end of the connecting element 52 is disposed in the chamber 11, the lower end of the connecting element 52 is a clamping portion 54, the clamping portion 54 is clamped with a sliding body 55, the sliding body 55 is a sphere, the sliding body 55 is in abutting engagement with the measured object, when the test platform 51 moves, the sliding body 55 slides on the measured object, so as to generate sliding friction, and the upper end of the connecting element 52 is located outside the chamber 11.

The first detecting unit 53 is connected to the other end of the connecting member 52 to detect the frictional property of the member to be detected. Specifically, as shown in fig. 1-2, the first detection unit 53 is a friction force sensor and is provided at the upper end of the link 52, whereby the friction force on the friction member is detected through the link 52.

It can be understood that the connecting member 52 can be an electric push rod, so as to adjust the distance and pressure between the sliding body 55 and the tested member, and in addition, regarding the movement and rotation of the testing table 51, the invention is not limited, the testing table 51 can be manually driven, or a motor is arranged below the testing table 51, the motor drives the testing table 51 to rotate, or an electric push rod is arranged on one side of the testing table 51, the testing table 51 is pushed to move by the electric push rod, or the motor drives the testing table 51 to move by gear-rack meshing transmission, and the like.

In some embodiments, the friction tester 100 further includes a second detection unit 7, the second detection unit 7 being disposed within the chamber 11 to detect at least one of a gas concentration, a temperature, and a humidity within the chamber 11. Specifically, the second sensing unit 7 is provided in the chamber 11 on the test stage 51, so that the concentration, temperature and humidity of the gas in the chamber 11 are sensed by the second sensing unit 7.

In some embodiments, the bottom of the housing 1 is provided with a drain port 12, and the drain port 12 is communicated with the chamber 11 so that water in the chamber 11 is drained out of the chamber 11. Specifically, the water outlet 12 is provided with a fifth valve (not shown), and when water is accumulated in the chamber 11, the fifth valve is opened to discharge the water in the chamber 11, so as to prevent the experimental result from being affected.

In some embodiments, the friction tester 100 further includes an accumulator 9 and a controller 8, and both the accumulator 9 and the controller 8 can be connected to the air pumping assembly 6, the refrigeration unit 21, the heating unit 22, the drying unit 31, the humidification unit 32, the first air pump, the second air pump, the first detection unit 53, the second detection unit 7, the test bench 51, the first valve 421, the second valve 441, the third valve 451, and the fourth valve 46, so as to control the operations of the air pumping assembly 6, the refrigeration unit 21, the heating unit 22, the drying unit 31, the humidification unit 32, the first air pump, the second air pump, the first detection unit 53, the second detection unit 7, the test bench 51, the first valve 421, the second valve 441, the third valve 451, the fourth valve 46, and the fifth valve.

The working process of the friction tester 100 according to the embodiment of the present invention is as follows:

s1, fixing the tested piece on the test bench 51, adjusting the pressure between the sliding body 55 and the test bench 51, starting the air extraction assembly 6, and after the chamber 11 reaches a vacuum environment, simultaneously starting the refrigeration unit 21, the heating unit 22, the drying unit 31, the humidification unit 32, the first air pump, the second detection unit 7, the test bench 51, the first valve 421, the second valve 441, the third valve 451 and the fourth valve 46, thereby simultaneously adjusting the temperature, the humidity and the gas concentration in the chamber 11 and reducing the experimental time.

S2, the cooling unit 21 and the heating unit 22 are turned off when the temperature in the chamber 11 reaches the first preset value, the cooling unit 21 is turned back on when the second sensing unit 7 senses that the temperature in the chamber 11 is higher than the first preset value, or the heating unit 22 is turned back on when the second sensing unit 7 senses that the temperature in the chamber 11 is lower than the first preset value.

S3, when the humidity in the chamber 11 reaches a preset value, the drying unit 31, the humidifying unit 32 and the second valve 441 are closed, at this time, the experimental gas is directly introduced into the chamber 11 through the main pipe 43 and the second pipe 45 without affecting the adjustment of the gas concentration, when the second detection unit 7 detects that the humidity in the chamber 11 is higher than the second preset value, the drying unit 31 is restarted, or when the second detection unit 7 detects that the humidity in the chamber 11 is lower than the second preset value, the humidifying unit 32 is restarted, the third valve 451 is closed, and the second valve 441 is opened.

And S4, when the gas concentration in the chamber 11 reaches a preset value, closing the first valve 421, the second valve 441, the third valve 451, the first air pump and the second air pump, when the second detection unit 7 detects that the gas concentration in the chamber 11 is higher than the second preset value, re-opening the first valve 421, the third valve 451 and the second air pump, or when the second detection unit 7 detects that the gas concentration in the chamber 11 is lower than the second preset value, re-opening the first valve 421, the second valve 441 and the first air pump.

S5, when the temperature in the chamber 11 reaches the first preset value, the humidity reaches the second preset value and the gas concentration reaches the third preset value, the detection assembly 5 is started to detect the detected piece, the second detection assembly 5 continuously works, and the steps S2, S3 and S4 are repeated.

S6: after the detection assembly 5 finishes working, the air pumping assembly 6, the refrigeration unit 21, the heating unit 22, the drying unit 31, the humidification unit 32, the first air pump, the second air pump, the first detection unit 53, the second detection unit 7, the first valve 421, the second valve 441, the third valve 451 and the fourth valve 46 are sequentially closed, and the fifth valve is opened to discharge water in the chamber 11.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.