CN116297147B - Rubber aging test device and test method based on different environments - Google Patents
Rubber aging test device and test method based on different environments Download PDFInfo
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- CN116297147B CN116297147B CN202310543813.4A CN202310543813A CN116297147B CN 116297147 B CN116297147 B CN 116297147B CN 202310543813 A CN202310543813 A CN 202310543813A CN 116297147 B CN116297147 B CN 116297147B
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Abstract
The application relates to a rubber aging test device and a test method based on different environments, and relates to the technical field of rubber aging tests, wherein the device comprises a test box body, a compressive stress adjusting mechanism and a test detecting mechanism; the test box body is used for carrying out a thermo-oxidative aging test on the rubber test piece, a cavity for placing the rubber test piece and the test detection mechanism is formed in the test box body, a placing rack for placing the rubber test piece is arranged at the bottom of the cavity, and the test detection mechanism is used for detecting the aging degree of the rubber test piece; the pressure stress adjusting mechanism is used for adjusting the pressure stress of the rubber test piece, and is arranged on the test box body. The method and the device have the effect of improving the accuracy of the acquired aging test data.
Description
Technical Field
The application relates to the technical field of rubber aging tests, in particular to a rubber aging test device and a test method based on different environments.
Background
The rubber is a high-elasticity polymer material which has elasticity at room temperature, generates larger deformation under the stress, and can recover the original state after the external force is removed. However, rubber material products are easily affected by internal and external factors such as light, heat, oxygen, chemical and biological corrosion in the use and storage processes, so that chemical components and molecular structures can be changed in series, namely ageing phenomenon is generated.
In the related art, aging of rubber materials causes discoloration, adhesion, hardening, cracking and other phenomena on appearance, and also causes reduction of mechanical properties such as breaking strength, breaking strain, breaking elongation and the like of the rubber materials, change of tribological properties on the surfaces of the materials and the like, so that it is necessary to perform an aging test on the rubber, and thus to understand the properties of the rubber material products after aging. At present, a rubber material product is generally placed in a thermal oxidation aging test box in the rubber aging test method, the aging speed of the rubber material product is improved by controlling the temperature in the thermal oxidation aging test box in unit time, and the service life of the rubber material product is obtained through analysis and calculation of the obtained thermal oxidation aging test data, so that whether the rubber material product can meet the conditions required by the current working conditions or not is conveniently known.
For the related art in the above, the following drawbacks are found: when the ageing test is carried out on the rubber material sealing ring at the shield tunnel segment joint in the actual engineering through the thermo-oxidative ageing test box, the ageing test data obtained through the thermo-oxidative ageing test box is inaccurate because the actual state and the working environment of the rubber material sealing ring are always subjected to the action of compressive stress from adjacent segments.
Disclosure of Invention
In order to improve accuracy of acquired aging test data, the application provides a rubber aging test device and a test method based on different environments.
In a first aspect, the present application provides a rubber aging test device based on different environments, which adopts the following technical scheme:
a rubber aging test device based on different environments comprises a test box body, a compressive stress adjusting mechanism and a test detecting mechanism;
the test box body is used for performing a thermo-oxidative aging test on the rubber test piece, a cavity for placing the rubber test piece and the test detection mechanism is formed in the test box body, a placing rack for placing the rubber test piece is arranged at the bottom of the cavity, and the test detection mechanism is used for detecting the aging degree of the rubber test piece;
the pressure stress adjusting mechanism is used for adjusting the pressure stress of the rubber test piece, and is arranged on the test box body.
Through adopting above-mentioned technical scheme, place the rubber test piece on the rack, adjust the compressive stress size that receives the rubber test piece through compressive stress adjustment mechanism, carry out the thermal oxidative aging test to the rubber test piece through the test box body, the rethread test detection mechanism detects the rubber test piece ageing degree to make the rubber test piece receive compressive stress's influence in the test process, and then improve the accuracy of the ageing test data who obtains.
Optionally, the pressure stress adjustment mechanism includes atmospheric pressure detection component and atmospheric pressure control piece, atmospheric pressure control piece is used for controlling atmospheric pressure in the cavity, atmospheric pressure detection component is used for right atmospheric pressure in the cavity detects and right atmospheric pressure control piece controls, atmospheric pressure detection component with atmospheric pressure control piece all set up in the test box body outside, atmospheric pressure detection component with atmospheric pressure control piece all with the cavity intercommunication, atmospheric pressure detection component with atmospheric pressure control piece electricity is connected, be provided with on the test box body be used for with atmospheric pressure control piece carries out the connecting pipe that is connected.
Through adopting above-mentioned technical scheme, detect the atmospheric pressure in the cavity and control the atmospheric pressure control piece through atmospheric pressure detection component to make atmospheric pressure control piece adjust atmospheric pressure in the cavity, make the internal atmospheric pressure of cavity keep stable, improve the accuracy of the ageing test data of acquireing.
Optionally, the air pressure detection component includes air pressure detection mercury, resistance detection spare and power part, the air pressure detection mercury is used for right air pressure in the cavity detects, the air pressure detection mercury with the cavity intercommunication, the power part is used for right the air pressure detection mercury provides the power, the resistance detection spare is used for right the air pressure detection mercury carries out resistance detection, the power part the air pressure detection mercury reaches the power part electricity is connected.
Through adopting above-mentioned technical scheme, through atmospheric pressure detection mercury column and cavity intercommunication to when the atmospheric pressure in the cavity changed, the atmospheric pressure detected the altitude of mercury column and changed, the rethread resistance detection spare detects the resistance of atmospheric pressure detection mercury column, thereby conveniently detects the atmospheric pressure in the cavity.
Optionally, the test detection mechanism includes magnetic field generation subassembly, dead axle rotating assembly, auxiliary current spare and current detection spare, the magnetic field generation subassembly is used for producing the magnetic field, the magnetic field generation subassembly set up in on the dead axle rotating assembly, the dead axle rotating assembly is used for driving the magnetic field generation subassembly rotates, the dead axle rotating assembly set up in the chamber bottom of cavity, auxiliary current spare sets up on each arris of rubber test piece, the current detection spare is used for right the induced current that produces in the auxiliary current spare detects, the current detection spare with auxiliary current spare electricity is connected.
Through adopting above-mentioned technical scheme, produce the magnetic field through the magnetic field production subassembly, rethread dead axle rotating assembly drives the magnetic field and produces the subassembly and rotate to make the magnetic field that the magnetic field produced by the magnetic field production subassembly cut and produce induced current to the auxiliary current spare on each arris of rubber test piece, the induced current that produces in the current detection spare detects auxiliary current spare, thereby conveniently acquire rubber ageing test result.
Optionally, the dead axle rotating assembly includes fixing base, rotation post, rotation piece and connecting piece, the fixing base set up in the chamber bottom of cavity, the connecting piece set up in on the magnetic field produces the subassembly, the rotation post is used for driving the connecting piece carries out the horizontal direction rotation, the rotation post rotate connect in on the fixing base, the rotation piece is used for driving the connecting piece carries out vertical direction rotation, the rotation piece rotate connect in on the rotation post.
Through adopting above-mentioned technical scheme, the connecting piece sets up on magnetic field produces the subassembly, drives the connecting piece through the dwellings post and carries out the horizontal direction and rotate, rotates the connecting piece and carries out vertical direction rotation to make the connecting piece drive magnetic field produce the subassembly and carry out horizontal direction and vertical direction and rotate, thereby make things convenient for the magnetic field that the magnetic field produced the subassembly to cut and produce induced current to the auxiliary current spare on each arris of rubber test piece.
In a second aspect, the present application provides a rubber aging test method based on different environments, which adopts the following technical scheme:
the rubber aging test method based on different environments is applied to the rubber aging test device based on different environments according to the first aspect, and comprises the following steps:
The auxiliary current elements are arranged on each edge of the rubber test piece, and the rubber test piece is placed at a designated position on the placing frame;
acquiring a current air pressure value;
according to the current air pressure value, the preset air pressure reference value and the preset air pressure adjustment value, analyzing and obtaining an air pressure adjustment value corresponding to the current air pressure value and the air pressure reference value, and sending the air pressure adjustment value to the air pressure control member;
and executing a preset rubber aging test scheme.
Through adopting above-mentioned technical scheme, install auxiliary current spare on each arris of rubber test piece to place the rubber test piece in appointed position on the rack, acquire current atmospheric pressure value again, acquire atmospheric pressure adjustment value through current atmospheric pressure value and atmospheric pressure benchmark value analysis, and with atmospheric pressure adjustment value send to atmospheric pressure control spare carries out rubber ageing test scheme again, thereby makes the rubber test piece receive compressive stress's influence in the test process, and then improves the accuracy of the ageing test data of acquireing.
Optionally, the rubber aging test protocol comprises:
acquiring current position information of the magnetic field generating assembly;
analyzing the current position information and the preset detection reference position information according to a preset detection movement method to form movement control information, and sending the movement control information to the fixed-axis rotating assembly;
Acquiring a current detection value on the current detection piece;
and analyzing the current detection value according to a preset detection result analysis method to form aging detection result information.
By adopting the technical scheme, the current position information of the magnetic field generating assembly is acquired, the current position information and the detection reference position information are analyzed and processed through a detection movement method, so that movement control information is acquired and sent to the fixed shaft rotating assembly, then the current detection value on the current detecting member is acquired, the current detection value is analyzed and processed through a detection result analysis method, and thus aging detection result information is acquired.
Optionally, the analyzing the current position information and the preset detection reference position information according to the preset detection movement method to form movement control information includes:
according to the corresponding relation between the current position information and preset first reference position information and preset first adjustment movement information, analyzing and obtaining first adjustment movement information corresponding to the current position information and the first reference position information;
according to the corresponding relation between the current position information and preset second reference position information and preset second adjustment movement information, analyzing and obtaining second adjustment movement information corresponding to the current position information and the second reference position information;
According to the corresponding relation between the current position information and preset third reference position information and preset third adjustment movement information, third adjustment movement information corresponding to the current position information and the third reference position information is obtained through analysis;
performing minimum value analysis processing based on the first adjustment movement information, the second adjustment movement information and the third adjustment movement information, and taking the minimum value as movement preliminary control information;
determining movement preliminary stopping position information according to the analysis of the current position information and the movement preliminary control information;
and analyzing and acquiring the movement residual control information corresponding to the movement preliminary stop position information according to the corresponding relation between the movement preliminary stop position information and the preset movement residual control information, and taking the movement preliminary control information and the movement residual control information as movement control information.
By adopting the technical scheme, the first adjustment movement information is obtained through the analysis of the current position information and the first reference position information, the second adjustment movement information is obtained through the analysis of the current position information and the second reference position information, the third adjustment movement information is obtained through the analysis of the current position information and the third reference position information, the minimum value of the first adjustment movement information, the second adjustment movement information and the third adjustment movement information is processed through analysis and used as the movement preliminary control information, the movement preliminary stop position information is determined through the analysis of the current position information and the movement preliminary control information, the movement residual control information is obtained through the analysis of the movement preliminary stop position information, and the movement preliminary control information and the movement residual control information are used as the movement control information, so that when the magnetic field generating assembly initially moves, the movement distance of the magnetic field generating assembly is reduced, the movement of the magnetic field generating assembly is facilitated, and the accuracy of the obtained movement control information is improved.
Optionally, the analyzing the current detection value according to the preset detection result analyzing method to form the aging detection result information includes:
according to the corresponding relation between the current detection value and the preset detection length value, analyzing and obtaining the detection length value corresponding to the current detection value;
according to the detected length value and a preset length reference value, analyzing and calculating a difference value between the detected length value and the length reference value to be used as a length deviation value;
and analyzing and acquiring single detection result information corresponding to the length deviation value according to the corresponding relation between the length deviation value and the preset single detection result information, and inputting the single detection result information into the aging detection result information.
By adopting the technical scheme, the detection length value is obtained through the analysis of the current detection value, the difference value between the detection length value and the length reference value is analyzed and calculated, the difference value is used as the length deviation value, the single detection result information is obtained through the analysis of the length deviation value, and the single detection result information is input into the aging detection result information, so that an operator can conveniently obtain the aging detection result information later.
Optionally, the method further comprises the step of inputting the single detection result information into the aging detection result information, specifically comprising the following steps:
Judging whether the aging detection result information contains three pieces of single detection result information or not;
if so, analyzing and acquiring comprehensive detection result information corresponding to the three single detection result information according to the corresponding relation between the three single detection result information and the preset comprehensive detection result information, and sending the comprehensive detection result information to a terminal held by an operator;
if not, continuing to acquire the current position information of the magnetic field generating component.
By adopting the technical scheme, whether the aging detection result information contains three pieces of single detection result information or not is obtained, when the aging detection result information contains three pieces of single detection result information, the comprehensive detection result information is obtained through analysis of the three pieces of single detection result information, the comprehensive detection result information is sent to a terminal held by an operator, and when the aging detection result information does not contain the three pieces of single detection result information, the current position information of the magnetic field generation assembly is continuously obtained, so that the accuracy of the obtained aging detection result information is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. placing the rubber test piece on a placing frame, adjusting the pressure stress of the rubber test piece through a pressure stress adjusting mechanism, performing a thermo-oxidative aging test on the rubber test piece through a test box body, and detecting the aging degree of the rubber test piece through a test detecting mechanism, so that the rubber test piece is affected by the pressure stress in the test process, and the accuracy of acquired aging test data is improved;
2. The air pressure detection mercury is communicated with the cavity, so that when the air pressure in the cavity changes, the height of the air pressure detection mercury changes, and then the resistance detection is carried out on the air pressure detection mercury through the resistance detection piece, so that the air pressure in the cavity is conveniently detected;
3. the magnetic field is generated by the magnetic field generating assembly, and the magnetic field generating assembly is driven to rotate by the fixed shaft rotating assembly, so that the magnetic field generated by the magnetic field generating assembly cuts the auxiliary current pieces on each edge of the rubber test piece and generates induction current, and the current detecting piece detects the induction current generated in the auxiliary current pieces, so that the rubber aging test result is conveniently obtained.
Drawings
FIG. 1 is a schematic view showing the overall structure of a rubber aging test apparatus in the embodiment of the present application.
Fig. 2 is a schematic structural diagram of a magnetic field generating assembly and a fixed axis rotating assembly according to an embodiment of the present application.
FIG. 3 is a flow chart of a method for testing rubber aging based on different environments according to an embodiment of the present application.
FIG. 4 is a flow chart of a method of a rubber aging test protocol of an embodiment of the present application.
Fig. 5 is a flowchart of a method for analyzing current position information and preset detection reference position information to form movement control information according to a preset detection movement method in an embodiment of the present application.
Fig. 6 is a flowchart of a method for analyzing a current detection value to form aging detection result information according to a preset detection result analysis method according to an embodiment of the present application.
Fig. 7 is a flowchart of a method of an embodiment of the present application following the step of inputting single detection result information to the aging detection result information.
Reference numerals illustrate: 1. a test chamber body; 2. a compressive stress adjustment mechanism; 3. a test detection mechanism; 4. a cavity; 5. a placing rack; 6. an air pressure detection assembly; 7. a pneumatic control member; 8. a connecting pipe; 9. detecting mercury column by air pressure; 10. a resistance detecting member; 11. a power supply member; 12. a magnetic field generating assembly; 13. a fixed axis rotating assembly; 14. an auxiliary current member; 15. a current detecting member; 16. a fixing seat; 17. rotating the column; 18. a rotating member; 19. a connecting piece; 20. a temperature detector; 21. heating a condensing tube; 22. and a bending part.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to fig. 1 to 7 and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
Referring to fig. 1 and 2, the embodiment of the application discloses a rubber aging test device based on different environments, which comprises a test box body 1 for performing a thermo-oxidative aging test on a rubber test piece, a compressive stress adjusting mechanism 2 for adjusting the magnitude of compressive stress received by the rubber test piece, and a test detecting mechanism 3 for detecting the aging degree of the rubber test piece. The cavity 4 has been seted up on the test box body 1, rubber test piece and experimental detection mechanism 3 all are located cavity 4, install rack 5 on the chamber bottom of cavity 4, rack 5 is used for placing the rubber test piece, install the heating condenser pipe 21 that is used for carrying out the adjustment to the temperature in the cavity 4 on the circumference outside wall of test box body 1, heating condenser pipe 21 is cyclic annular, and heating condenser pipe 21 surrounds and install on test box body 1, thereby carry out even heating to test box body 1, and then make the rubber test piece that is located in test box body 1 evenly be heated. Install the temperature detector 20 that is used for detecting the temperature and controls heating condenser pipe 21 on the inside wall of cavity 4, detect the temperature in the cavity 4 through temperature detector 20 to thereby with the temperature difference of analysis after comparing the temperature of detecting with the temperature of predetermineeing to send the control information corresponding with the temperature difference to heating condenser pipe 21 on, make heating condenser pipe 21 adjust heating temperature, thereby guarantee that the rubber test piece is in the temperature of demand, conveniently carry out the thermal oxidation ageing test to the rubber test piece. In this embodiment, the temperature detector 20 is located in the middle position of the top side wall of the cavity 4, so as to improve the accuracy of the temperature detected by the temperature detector 20, the placement frame 5 is located in the middle position of the bottom side wall of the cavity 4, and the height of the placement frame 5 is half of the height of the test box body 1, so that the distances between the rubber test piece and each side wall of the cavity 4 are equal, the environmental conditions to which each side surface of the rubber test piece is subjected are the same, and the accuracy of testing the rubber test piece is improved.
Referring to fig. 1 and 2, the pressure stress adjusting mechanism 2 is mounted on the test box body 1, the pressure stress adjusting mechanism 2 comprises a pressure control member 7 for adjusting the pressure in the cavity 4 and a pressure detection assembly 6 for detecting the pressure in the cavity 4 and controlling the pressure control member 7, the pressure control member 7 is mounted on any one circumferential side wall of the test box body 1, a connecting pipe 8 is mounted between the test box body 1 and the pressure control member 7, and the connecting pipe 8 is communicated with the cavity 4. In order to improve the sealing property between the connecting pipe 8 and the test chamber body 1, a sealing ring may be installed between the connecting pipe 8 and the test chamber body 1, so that the air pressure is not likely to leak from the gap between the connecting pipe 8 and the test chamber body 1. In this embodiment, the pneumatic control 7 is a tube with a movable piston by which the volume in the tube is driven to adjust the pressure.
Referring to fig. 1 and 2, the air pressure detecting unit 6 includes an air pressure detecting mercury 9 for detecting the air pressure in the cavity 4, a resistance detecting member 10 for detecting the resistance of the air pressure detecting mercury 9, and a power source member 11 for supplying power to the air pressure detecting mercury 9. The air pressure detection mercury column 9 is vertically arranged, a bending part 22 bending towards the direction far away from the ground is integrally arranged on one side of the air pressure detection mercury column 9, close to the test box body 1, and the bending part 22 is communicated with the cavity 4, so that mercury in the air pressure detection mercury column 9 is not easy to flow into the cavity 4. One end of the resistance detection member 10 is connected with one end, close to the ground, of the air pressure detection mercury 9 through a wire, the other end of the resistance detection member 10 is connected with the positive electrode or the negative electrode of the power member 11, and the negative electrode or the positive electrode of the power member 11 is connected with one end, far away from the ground, of the air pressure detection mercury 9. The air pressure detection component 6 is electrically connected with the air pressure control component 7, and the air pressure control component 7 is controlled through the air pressure detection component 6, so that when the air pressure in the cavity 4 changes, the air pressure control component 7 can timely adjust the air pressure in the cavity 4. In this embodiment, the air pressure detecting component 6 is located at one side of the test chamber body 1 far away from the air pressure control member 7, the resistance detecting member 10 is an ammeter, the power supply member 11 is a battery, and when the air pressure in the cavity 4 changes, the mercury height in the air pressure detecting mercury 9 changes, so that the mercury resistance value in the air pressure detecting mercury 9 changes, and then the detection value of the resistance detecting member 10 changes, so that the air pressure in the cavity 4 is conveniently detected.
Referring to fig. 1 and 2, the test detection mechanism 3 includes a magnetic field generating assembly 12 for generating a magnetic field, a fixed axis rotating assembly 13 for rotating the magnetic field generating assembly 12, an auxiliary current member 14 for detecting the auxiliary of the rubber test piece, and a current detecting member 15 for detecting the induced current generated in the auxiliary current member 14. In this embodiment, the current detecting element 15 is an ammeter, and the magnetic field generating element 12 is a helmholtz coil with a varistor box and an external power supply.
Referring to fig. 1 and 2, the fixed axis rotating assembly 13 includes a fixed base 16, a connecting piece 19 for connecting with the magnetic field generating assembly 12, a rotating column 17 for driving the connecting piece 19 to rotate in a horizontal direction, and a rotating piece 18 for driving the connecting piece 19 to rotate in a vertical direction. The auxiliary current elements 14 are mounted on the edges of the rubber test piece, the auxiliary current elements 14 are made of flexible conductor materials, the auxiliary current elements 14 can conduct electricity and change along with the volume change of the rubber test piece, and adjacent auxiliary current elements 14 are connected with each other. The connecting piece 19 is installed on the magnetic field generating assembly 12, the fixed seat 16 is installed at the bottom of the cavity 4, the rotating column 17 is rotationally connected to the fixed seat 16, and the fixed seat 16 drives the rotating column 17 to rotate, so that the rotating column 17 drives the magnetic field generating assembly 12 to circumferentially rotate along the axis direction of the rotating column 17. The rotating member 18 is rotatably connected to the rotating post 17, and the rotating member 18 drives the connecting member 19 to circumferentially rotate along a connection point between the rotating member 18 and the rotating post 17. The current detecting element 15 is located outside the test chamber body 1, and the current detecting element 15 is connected with the auxiliary current element 14 through a wire. In this embodiment, the auxiliary current element 14 is made of a solder material, the fixing base 16 is located at a position where the bottom side wall of the cavity 4 deviates from the middle, and the connecting element 19 is connected with the edge of the helmholtz coil, so that an offset exists between the connecting element 19 and the helmholtz coil, and the offset between the connecting element 19 and the helmholtz coil is equal to the offset of the fixing base 16 and the middle position of the bottom side wall of the cavity 4, so that when the rotating column 17 or the rotating element 18 drives the connecting element 19 to rotate, the magnetic field generating assembly 12 can detect a rubber test piece. The connecting piece 19 is spherical, the rotating column 17 is fixedly connected with the spherical center of the connecting piece 19, and a driving motor for driving the rotating piece 18 to rotate is mounted on the connecting piece 19 and is not shown in the drawings.
For example, the rubber test piece is a cube, and defines the length, width and height directions of the rubber test piece to be XYZ axis directions, at this time, the rotating column 17 drives the connecting piece 19 to rotate along the Z axis, and the rotating piece 18 drives the connecting piece 19 to rotate along the X axis or the Y axis.
Referring to fig. 3, based on the same inventive concept, an embodiment of the present invention provides a rubber aging test method based on different environments, including:
in step S100, the auxiliary current members 14 are mounted on the respective edges of the rubber test pieces, and the rubber test pieces are placed at specified positions on the placement frame 5.
Wherein the auxiliary current elements 14 are mounted and fixed on the edges of the rubber test piece, and adjacent auxiliary current elements 14 are connected with each other. And then the rubber test piece is placed at the appointed position on the placing frame 5, so that the subsequent test on the rubber test piece is facilitated, and the accuracy of the rubber test piece is improved.
Step S200, obtaining the current air pressure value.
The current air pressure value is a detection value obtained by detecting the air pressure in the cavity 4 at the current time, and is obtained by detecting the air pressure through the air pressure detection component 6.
Step S300, according to the current air pressure value, the preset air pressure reference value and the preset air pressure adjustment value, analyzing and obtaining the air pressure adjustment value corresponding to the current air pressure value and the air pressure reference value, and sending the air pressure adjustment value to the air pressure control member 7.
The air pressure reference value refers to a reference value of air pressure in the cavity 4, and the air pressure reference value is obtained by inquiring from a database storing the air pressure reference value.
The air pressure adjustment value is an adjustment value for adjusting the air pressure in the cavity 4, and the air pressure adjustment value is obtained by searching a database storing the air pressure adjustment value.
The air pressure adjusting value is obtained through analysis of the current air pressure value and the air pressure reference value and is sent to the air pressure control piece 7, so that air pressure in the cavity 4 is adjusted, the rubber test piece can be subjected to the action of pressure stress when subjected to a thermal oxidation aging test, and the accuracy of the obtained aging test data is improved.
Step S400, executing a preset rubber aging test scheme.
The rubber aging test scheme is used for performing a thermal oxidation aging test on a rubber test piece, and is obtained by inquiring a database storing the rubber aging test scheme.
And executing the rubber aging test scheme, so that aging test data of the rubber test piece after the thermo-oxidative aging test is obtained.
In step S400 shown in fig. 3, in order to further secure the rationality of the rubber aging test scheme, further individual analysis calculation of the rubber aging test scheme is required, specifically, the detailed description will be given by the steps shown in fig. 4.
Referring to fig. 4, the rubber aging test protocol includes the steps of:
in step S410, current position information of the magnetic field generating component 12 is acquired.
The current position information refers to position information of the magnetic field generating assembly 12 at the current time, and the current position information is detected and obtained by a distance detection sensor preset on the magnetic field generating assembly 12. And the distance between the cavity 4 and each side wall is detected by a distance detection sensor and then analyzed and obtained.
In step S420, the current position information and the preset reference position information are analyzed according to the preset detection movement method to form movement control information, and the movement control information is sent to the fixed axis rotating component 13.
The detection movement method is a method for controlling the magnetic field generating assembly 12 to move in the process of testing the rubber test piece so as to detect and acquire the aging test data, and the detection movement method is inquired and acquired from a database storing the detection movement method.
The detection reference position information is reference position information that the magnetic field generating unit 12 is required to reach when the magnetic field generating unit 12 is controlled to move to detect and acquire the burn-in test data, and the detection reference position information is acquired by searching from a database storing the detection reference position information.
The movement control information is used for controlling the fixed axis rotating component 13 to drive the magnetic field generating component 12 to move so as to detect and acquire the aging test data.
The current position information and the preset detection reference position information are analyzed and processed through a detection movement method, so that movement control information is formed, and the movement control information is sent to the fixed-axis rotating assembly 13, so that the fixed-axis rotating assembly 13 drives the magnetic field generating assembly 12 to move, and ageing test data are detected and acquired.
In step S430, a current detection value on the current detecting element 15 is acquired.
The current detection value refers to a current value of the induced current generated by the auxiliary current element 14, and the current detection value is obtained by detecting the auxiliary current element 14 through the current detection element 15.
Step S440, according to the preset detection result analysis method, the current detection value is analyzed and processed to form the aging detection result information.
The detection result analysis method is a method for analyzing a current detection value to obtain an aging detection result, and the detection result analysis method is obtained by inquiring a database storing the detection result analysis method.
And analyzing and processing the current detection value through a detection result analysis method so as to form aging detection result information, thereby facilitating an operator to know the aging detection result information.
In step S420 shown in fig. 4, in order to further secure the rationality of the movement control information, further individual analysis calculation of the movement control information is required, and specifically, the steps shown in fig. 5 will be described in detail.
Referring to fig. 5, the analysis processing of the current position information and the preset detection reference position information according to the preset detection movement method to form movement control information includes the steps of:
step S421, according to the corresponding relation between the current position information, the preset first reference position information and the preset first adjustment movement information, the first adjustment movement information corresponding to the current position information and the first reference position information is obtained through analysis.
The first reference position information is position information that the magnetic field generating unit 12 needs to reach the first reference position when the magnetic field generating unit 12 is controlled to move to detect and acquire the aging test data, and the first reference position information is acquired by searching from a database storing the first reference position information.
The first adjustment movement information is control information for controlling the fixed axis rotating component 13 to drive the magnetic field generating component 12 to move to a position corresponding to the first reference position information, so as to detect and acquire the aging test data, and the first adjustment movement information is obtained by inquiring from a database storing the first adjustment movement information.
And analyzing and acquiring the first adjustment movement information through the current position information and the first reference position information, so that the first adjustment movement information is convenient to use subsequently.
Step S422, analyzing and obtaining second adjustment movement information corresponding to the current position information and the second reference position information according to the corresponding relation between the current position information and the preset second reference position information and the preset second adjustment movement information.
The second reference position information is position information that the magnetic field generating assembly 12 needs to reach the second reference position when the magnetic field generating assembly 12 is controlled to move so as to detect and acquire the aging test data, and the second reference position information is acquired by inquiring from a database storing the second reference position information.
The second adjustment movement information is control information for controlling the fixed axis rotating component 13 to drive the magnetic field generating component 12 to move to a position corresponding to the second reference position information, so as to detect and acquire the aging test data, and the second adjustment movement information is obtained by inquiring from a database storing the second adjustment movement information.
And analyzing and acquiring second adjustment movement information through the current position information and the second reference position information, so that the second adjustment movement information is convenient to use subsequently.
Step S423, analyzing and obtaining third adjustment movement information corresponding to the current position information and the third reference position information according to the corresponding relation between the current position information and the preset third reference position information and the preset third adjustment movement information.
The third reference position information is position information that the magnetic field generating unit 12 needs to reach the third reference position when the magnetic field generating unit 12 is controlled to move to detect and acquire the aging test data, and the third reference position information is acquired by searching from a database storing the third reference position information.
The third adjustment movement information is control information for controlling the fixed axis rotating component 13 to drive the magnetic field generating component 12 to move to a position corresponding to the third reference position information, so as to detect and acquire the aging test data, and the third adjustment movement information is obtained by inquiring from a database storing the third adjustment movement information.
And analyzing and acquiring third adjustment movement information through the current position information and the third reference position information, so that the third adjustment movement information is convenient to use subsequently.
In step S424, a minimum value analysis process is performed based on the first adjustment movement information, the second adjustment movement information and the third adjustment movement information, and the minimum value is used as the movement preliminary control information.
The preliminary movement control information is control information for controlling the fixed axis rotating component 13 to drive the magnetic field generating component 12 to primarily move.
The minimum value analysis processing refers to analyzing and comparing the movement values corresponding to the first adjustment movement information, the second adjustment movement information and the third adjustment movement information, so as to obtain the minimum movement values corresponding to the first adjustment movement information, the second adjustment movement information and the third adjustment movement information.
The adjustment movement information corresponding to the minimum movement value is used as the movement preliminary control information, so that the subsequent use of the movement preliminary control information is facilitated, the preliminary movement distance of the magnetic field generating assembly 12 is reduced, and the detection efficiency is improved.
Step S425, determining the movement preliminary stop position information according to the analysis of the current position information and the movement preliminary control information.
The preliminary stop position information is position information for controlling the axial rotation assembly 13 to drive the magnetic field generating assembly 12 to perform preliminary movement and then to reach the position.
The current position information and the mobile preliminary control information are used for analyzing and determining the mobile preliminary stopping position information, so that the mobile preliminary stopping position information can be conveniently used subsequently.
Step S426, according to the corresponding relation between the preliminary stop position information and the preset residual control information, the residual control information corresponding to the preliminary stop position information is obtained and analyzed, and the preliminary control information and the residual control information are used as the residual control information.
The movement residual control information refers to control information for controlling the fixed axis rotating assembly 13 to drive the magnetic field generating assembly 12 to perform preliminary movement and then continuously controlling the fixed axis rotating assembly 13 to drive the magnetic field generating assembly 12 to perform movement, and the movement residual control information is obtained by inquiring a database storing the movement residual control information.
And obtaining movement residual control information through movement preliminary stop position information analysis, and taking the movement preliminary control information and the movement residual control information as movement control information, thereby improving the accuracy of the obtained movement control information.
In step S440 shown in fig. 4, in order to further secure the rationality of the movement control information, further individual analysis calculation of the movement control information is required, and specifically, the steps shown in fig. 6 will be described in detail.
Referring to fig. 6, the analysis processing of the current detection value to form the aging detection result information according to the preset detection result analysis method includes the steps of:
In step S441, according to the correspondence between the current detection value and the preset detection length value, the detection length value corresponding to the current detection value is obtained through analysis.
The detected length value refers to a length value of the auxiliary current element 14 analyzed according to the current detected value, and the detected length value is obtained by querying from a database storing the detected length value.
The fixed-axis rotating assembly 13 drives the magnetic field generating assembly 12 to move, so that the magnetic field generated by the magnetic field generating assembly 12 cuts the auxiliary current element 14, the auxiliary current element 14 generates induced current, and the magnitude of the current value of the induced current generated by the auxiliary current element 14 changes according to the actual length value of the auxiliary current element 14, so that the detected length value is analyzed and obtained through the current detection value, and the subsequent use of the detected length value is facilitated.
Step S442, according to the detected length value and the preset length reference value, the difference between the detected length value and the length reference value is analyzed and calculated and used as a length deviation value.
The length reference value is a length value of the auxiliary current element 14 when the rubber test piece is not subjected to the thermal oxidation aging test, and is obtained by searching a database storing the length reference value.
The length deviation value refers to an actual change value of the length of the auxiliary current member 14 according to a change of the rubber test piece after the rubber test piece is subjected to the thermo-oxidative aging test.
The difference between the detected length value and the length reference value is calculated through the detected length value and the preset length reference value, and the difference between the detected length value and the length reference value is used as a length deviation value, so that the subsequent use of the length deviation value is facilitated.
Step S443, according to the corresponding relation between the length deviation value and the preset single detection result information, analyzing and obtaining the single detection result information corresponding to the length deviation value, and inputting the single detection result information into the aging detection result information.
The single detection result information refers to detection result information obtained by detecting edges in one direction of the length, width and height directions on the rubber test piece at a time, and the single detection result information is obtained by inquiring a database storing the single detection result information.
And acquiring single detection result information through length deviation value analysis, and inputting the single detection result information into the aging detection result information, so that an operator can know the aging detection result information conveniently.
Further, in order to improve the accuracy of the acquired single detection result information, step S443 further includes the following steps. Defining a detection length value comprises detecting a first length value, detecting a second length value, detecting a third length value and detecting a fourth length value, wherein the length deviation value comprises a length first deviation value, a length second deviation value, a length third deviation value and a length fourth deviation value; analyzing and calculating a length deviation average value according to the length first deviation value, the length second deviation value, the length third deviation value and the length fourth deviation value; analyzing and calculating the difference between two adjacent values according to the first length value, the second length value, the third length value and the fourth length value to respectively serve as a first adjacent deviation value, a second adjacent deviation value, a third adjacent deviation value and a fourth adjacent deviation value; judging whether the first adjacent deviation value, the second adjacent deviation value, the third adjacent deviation value and the fourth adjacent deviation value are smaller than preset adjacent deviation reference values or not; if so, analyzing and acquiring average deviation result information corresponding to the length deviation average value according to the corresponding relation between the length deviation average value and preset average deviation result information, and taking the average deviation result information as single detection result information; if not, outputting preset moisture interference alarm information and sending the alarm information to a terminal held by an operator.
The detection of the first length value, the detection of the second length value, the detection of the third length value and the detection of the fourth length value refer to the detection of the corresponding length detection values of the four edges in one direction of the length, the width and the height directions of the rubber test piece at a time, and the length first deviation value, the length second deviation value, the length third deviation value and the length fourth deviation value refer to the detection of the first length value, the detection of the second length value, the detection of the third length value and the detection of the difference between the fourth length value and the length reference value respectively. The length deviation average value refers to an average value among the length first deviation value, the length second deviation value, the length third deviation value and the length fourth deviation value. The first adjacent offset value, the second adjacent offset value, the third adjacent offset value and the fourth adjacent offset value refer to detecting a first length value, detecting a second length value, detecting a third length value and detecting a difference between two adjacent values of the fourth length value. The adjacent deviation reference value refers to a reference value between two adjacent rubber test pieces, and the average deviation result information refers to detection result information corresponding to an edge length deviation average value in one direction of the length, width and height directions on the rubber test piece at a time. The moisture interference alarm information is used for alarming the situation that the error is increased due to the fact that moisture is locally attached to the rubber test piece.
The length deviation average value is analyzed and calculated through the length first deviation value, the length second deviation value, the length third deviation value and the length fourth deviation value, and the difference between two adjacent values is analyzed and calculated through detecting the first length value, detecting the second length value, detecting the third length value and detecting the fourth length value, and the obtained difference values are respectively used as a first adjacent deviation value, a second adjacent deviation value, a third adjacent deviation value and a fourth adjacent deviation value. And judging whether the first adjacent deviation value, the second adjacent deviation value, the third adjacent deviation value and the fourth adjacent deviation value are smaller than preset adjacent deviation reference values, when the first adjacent deviation value, the second adjacent deviation value, the third adjacent deviation value and the fourth adjacent deviation value are smaller than preset adjacent deviation reference values, obtaining average deviation result information through length deviation average value analysis, taking the average deviation result information as single detection result information, and when the unevenness is smaller than the preset single detection result information, outputting preset moisture interference alarm information and sending the preset moisture interference alarm information to a terminal held by an operator, so that the rubber test piece tested is not interfered by moisture, and the accuracy of the obtained single detection result information is improved.
After step S443 shown in fig. 4, in order to further secure the rationality after the single detection result information is input to the aging detection result information, further individual analysis calculation is required after the single detection result information is input to the aging detection result information, specifically, the steps shown in fig. 7 will be described in detail.
Referring to fig. 7, the step after inputting the single detection result information to the aging detection result information includes the steps of:
in step S4431, it is determined whether the aging detection result information includes three single detection result information. If yes, go to step S4432; if not, go to step S4433.
And judging whether all edges in the length, width and height directions on the rubber test piece are detected or not by judging whether the aging detection result information contains three pieces of single detection result information or not.
Step S4432, analyzing and obtaining comprehensive detection result information corresponding to the three single detection result information according to the correspondence between the three single detection result information and the preset comprehensive detection result information, and transmitting the comprehensive detection result information to the terminal held by the operator.
The comprehensive detection result information refers to comprehensive result information obtained by detecting all edges in the length, width and height directions on the rubber test piece, and the comprehensive detection result information is inquired and obtained from a database storing the comprehensive detection result information.
Because the rubber test piece is aged after being subjected to the thermo-oxidative aging test and the volume is changed, each edge of the rubber test piece is changed, when aging detection result information contains three pieces of single detection result information, the fact that all edges in the length, width and height directions on the rubber test piece are detected is described, comprehensive detection result information is obtained through analysis of the three pieces of single detection result information, the volume change of the rubber test piece is determined through the edges in the length, width and height directions of the rubber test piece, and the comprehensive detection result information is sent to a terminal held by an operator, so that the operator can know the final detection result conveniently.
Step S4433, the jump proceeds to step S410.
When the aging detection result information does not include three single detection result information, it is indicated that all edges in the length, width and height directions on the rubber test piece are not detected at this time, so step S410 is skipped.
The foregoing description of the preferred embodiments of the present application is not intended to limit the scope of the application, in which any feature disclosed in this specification (including abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
Claims (4)
1. Rubber aging test device based on under different environment, its characterized in that: comprises a test box body (1), a compressive stress adjusting mechanism (2) and a test detecting mechanism (3);
the test box body (1) is used for performing a thermo-oxidative aging test on a rubber test piece, a cavity (4) for placing the rubber test piece and the test detection mechanism (3) is formed in the test box body (1), a placing frame (5) for placing the rubber test piece is arranged at the bottom of the cavity (4), and the test detection mechanism (3) is used for detecting the aging degree of the rubber test piece;
The pressure stress adjusting mechanism (2) is used for adjusting the pressure stress of the rubber test piece, and the pressure stress adjusting mechanism (2) is arranged on the test box body (1);
the test detection mechanism (3) comprises a magnetic field generation assembly (12), a fixed shaft rotation assembly (13), an auxiliary current piece (14) and a current detection piece (15), wherein the magnetic field generation assembly (12) is used for generating a magnetic field, the magnetic field generation assembly (12) is arranged on the fixed shaft rotation assembly (13), the fixed shaft rotation assembly (13) is used for driving the magnetic field generation assembly (12) to rotate, the fixed shaft rotation assembly (13) is arranged at the bottom of the cavity (4), the auxiliary current piece (14) is arranged on each edge of a rubber test piece, the current detection piece (15) is used for detecting induction current generated in the auxiliary current piece (14), the current detection piece (15) is electrically connected with the auxiliary current piece (14), and the auxiliary current piece (14) can conduct electricity and change along with the volume change of the rubber test piece;
the fixed shaft rotating assembly (13) comprises a fixed seat (16), a rotating column (17), a rotating piece (18) and a connecting piece (19), wherein the fixed seat (16) is arranged at the bottom of the cavity (4), the connecting piece (19) is arranged on the magnetic field generating assembly (12), the rotating column (17) is used for driving the connecting piece (19) to rotate in the horizontal direction, the rotating column (17) is rotationally connected to the fixed seat (16), the rotating piece (18) is used for driving the connecting piece (19) to rotate in the vertical direction, the rotating piece (18) is rotationally connected to the rotating column (17), a rubber test piece is square, the length and width directions of the rubber test piece are defined to be XYZ axis directions, at the moment, the rotating column (17) drives the connecting piece (19) to rotate along the Z axis, and the rotating piece (18) drives the connecting piece (19) to rotate along the X axis or the Y axis.
2. The rubber aging test device based on different environments according to claim 1, wherein: the pressure stress adjusting mechanism (2) comprises a pressure detecting component (6) and a pressure control piece (7), the pressure control piece (7) is used for controlling the pressure in the cavity (4), the pressure detecting component (6) is used for detecting the pressure in the cavity (4) and controlling the pressure control piece (7), the pressure detecting component (6) and the pressure control piece (7) are all arranged on the outer side of the test box body (1), the pressure detecting component (6) and the pressure control piece (7) are all communicated with the cavity (4), the pressure detecting component (6) is electrically connected with the pressure control piece (7), and a connecting pipe (8) used for being connected with the pressure control piece (7) is arranged on the test box body (1).
3. The rubber aging test device based on different environments according to claim 2, wherein: the air pressure detection assembly (6) comprises an air pressure detection mercury column (9), a resistance detection part (10) and a power supply part (11), wherein the air pressure detection mercury column (9) is used for detecting air pressure in the cavity (4), the air pressure detection mercury column (9) is communicated with the cavity (4), the power supply part (11) is used for supplying power to the air pressure detection mercury column (9), the resistance detection part (10) is used for carrying out resistance detection on the air pressure detection mercury column (9), and the power supply part (11) the air pressure detection mercury column (9) and the power supply part (11) are electrically connected.
4. A rubber aging test method based on different environments, applied to the rubber aging test device based on different environments according to claim 3, characterized by comprising the following steps:
the auxiliary current pieces (14) are arranged on the edges of the rubber test pieces, and the rubber test pieces are placed at the appointed positions on the placing frame (5);
acquiring a current air pressure value;
according to the current air pressure value, the preset air pressure reference value and the preset air pressure adjustment value, analyzing and obtaining air pressure adjustment values corresponding to the current air pressure value and the air pressure reference value, and sending the air pressure adjustment values to an air pressure control part (7);
executing a preset rubber aging test scheme;
the rubber aging test protocol included:
acquiring current position information of the magnetic field generating assembly (12);
analyzing the current position information and the preset detection reference position information according to a preset detection movement method to form movement control information, and sending the movement control information to the fixed-axis rotating assembly (13);
acquiring a current detection value on the current detection piece (15);
analyzing the current detection value according to a preset detection result analysis method to form aging detection result information;
The step of analyzing the current position information and the preset detection reference position information according to the preset detection movement method to form movement control information comprises the following steps:
according to the corresponding relation between the current position information and preset first reference position information and preset first adjustment movement information, first adjustment movement information corresponding to the current position information and the first reference position information is analyzed and obtained, the first reference position information is used for controlling the magnetic field generating assembly (12) to move so as to detect the position information of the magnetic field generating assembly (12) required to reach the first reference position when ageing test data are obtained, and the first adjustment movement information is used for controlling the fixed axis rotating assembly (13) to drive the magnetic field generating assembly (12) to move to the position corresponding to the first reference position information so as to detect and obtain the control information of the ageing test data;
according to the corresponding relation between the current position information and preset second reference position information and preset second adjustment movement information, analyzing and obtaining second adjustment movement information corresponding to the current position information and the second reference position information, wherein the second reference position information is the position information which is used for controlling the magnetic field generating assembly (12) to move so as to detect and obtain the second reference position required by the magnetic field generating assembly (12) when the ageing test data are obtained, and the second adjustment movement information is the control information which is used for controlling the fixed axis rotating assembly (13) to drive the magnetic field generating assembly (12) to move to the position corresponding to the second reference position information so as to detect and obtain the ageing test data;
According to the corresponding relation between the current position information and preset third reference position information and preset third adjustment movement information, third adjustment movement information corresponding to the current position information and the third reference position information is analyzed and obtained, the third reference position information is used for controlling the magnetic field generating assembly (12) to move so as to detect the position information of the magnetic field generating assembly (12) required to reach the third reference position when ageing test data are obtained, and the third adjustment movement information is used for controlling the fixed axis rotating assembly (13) to drive the magnetic field generating assembly (12) to move to the position corresponding to the third reference position information so as to detect and obtain the control information of the ageing test data;
performing minimum value analysis processing based on the first adjustment movement information, the second adjustment movement information and the third adjustment movement information, and taking the minimum value as movement preliminary control information;
determining movement preliminary stopping position information according to the analysis of the current position information and the movement preliminary control information;
according to the corresponding relation between the movement preliminary stopping position information and the preset movement residual control information, analyzing and obtaining movement residual control information corresponding to the movement preliminary stopping position information, and taking the movement preliminary control information and the movement residual control information as movement control information, wherein the movement residual control information is control information for controlling the fixed axis rotating assembly (13) to drive the magnetic field generating assembly (12) to perform preliminary movement and then continuously controlling the fixed axis rotating assembly (13) to drive the magnetic field generating assembly (12) to perform movement;
The step of analyzing the current detection value according to the preset detection result analysis method to form aging detection result information comprises the following steps:
according to the corresponding relation between the current detection value and the preset detection length value, analyzing and obtaining the detection length value corresponding to the current detection value;
according to the detected length value and a preset length reference value, analyzing and calculating a difference value between the detected length value and the length reference value to be used as a length deviation value;
according to the corresponding relation between the length deviation value and the preset single detection result information, analyzing and obtaining single detection result information corresponding to the length deviation value, and inputting the single detection result information into the aging detection result information;
the method also comprises the step of inputting the single detection result information into the aging detection result information, and specifically comprises the following steps:
judging whether the aging detection result information contains three pieces of single detection result information, wherein the single detection result information is obtained by detecting edges in one of the length, width and height directions on the rubber test piece at a time;
if so, analyzing and acquiring comprehensive detection result information corresponding to the three single detection result information according to the corresponding relation between the three single detection result information and the preset comprehensive detection result information, and sending the comprehensive detection result information to a terminal held by an operator, wherein the comprehensive detection result information is the comprehensive result information after all edges in the length, width and height directions on the rubber test piece are detected;
If not, continuing to acquire the current position information of the magnetic field generating component (12).
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