CN110186667A - A kind of disc spring endurance testing system and method - Google Patents

A kind of disc spring endurance testing system and method Download PDF

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Publication number
CN110186667A
CN110186667A CN201910629866.1A CN201910629866A CN110186667A CN 110186667 A CN110186667 A CN 110186667A CN 201910629866 A CN201910629866 A CN 201910629866A CN 110186667 A CN110186667 A CN 110186667A
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CN
China
Prior art keywords
disc spring
central controller
cylinder
test
piston
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Granted
Application number
CN201910629866.1A
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Chinese (zh)
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CN110186667B (en
Inventor
蒋元广
石贺文
胡小婷
李占江
高超
孙玲玲
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Nanjing Yuebo Power System Co Ltd
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Nanjing Yuebo Power System Co Ltd
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Priority to CN201910629866.1A priority Critical patent/CN110186667B/en
Publication of CN110186667A publication Critical patent/CN110186667A/en
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Publication of CN110186667B publication Critical patent/CN110186667B/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0041Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
    • G01M5/005Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

It includes central controller, relay latching circuit, solenoid valve, cylinder, durable rack and counter that the embodiment of the present application, which discloses a kind of disc spring endurance testing system and method, the system,.Wherein, central controller is connected to relay latching circuit by single-way switch, and relay latching circuit, solenoid valve and cylinder are sequentially connected, and durable rack is for placing disc spring.When carrying out endurance test to disc spring using disclosed system, relay latching circuit compresses disc spring by the piston of solenoid valve control cylinder back and forth, when the actual frequency for compressing disc spring reaches preset compression number, central controller terminates to test, if actual frequency not up to compresses number, then central controller terminates test when the deformation quantity for judging disc spring is more than preset acceptable threshold.Disc spring endurance testing system disclosed in the present application is capable of the deformation quantity of real-time monitoring disc spring, and stops test when the deformation quantity of disc spring is more than permissible range, saves the time, effectively improves test efficiency.

Description

A kind of disc spring endurance testing system and method
Technical field
This application involves spring detection technique field more particularly to a kind of disc spring endurance testing system and methods.
Background technique
Disc spring is butterfly spring that is a kind of tapered in the axial direction and bearing load.Disc spring is simple with structure, rigidity is big And highly-safe advantage, it is industrial to be widely used in heavy-duty machinery, aircraft, automobile etc. frequently as strength buffering and damping device Field.In use due to disc spring, what is be subject to is alternate stress repeatedly, therefore after using certain number, dish Spring will be damaged and even be broken.In order to ensure the reliability of disc spring in use, need using it is preceding to disc spring into The fatigue life of disc spring is tested in row endurance test.
Mostly it is the positive and negative rotation using motor currently, carrying out endurance test to disc spring, simple compression behaviour is carried out to disc spring Make.After reaching preset compression number, off-test.After the test, disc spring is judged by observing the deformation quantity of disc spring Fatigue life, if the deformation quantity of disc spring exceed permissible range, then it represents that the fatigue life of disc spring is unsatisfactory for requiring.
But inventor has found in the research process of the application, traditional durability test apparatus is only capable of completing in test Later, the deformation quantity of disc spring is observed, and during the test, once deformation quantity exceeds permissible range, due to durability test apparatus Can not real-time monitoring disc spring deformation quantity, test still will continue to, in this case, it will greatly waste time, reduce test Efficiency.
Summary of the invention
In order to solve the problems, such as that traditional disc spring durability test apparatus wastes time in test, reduces detection efficiency, Application discloses a kind of disc spring endurance testing system and method by following embodiment.
The application is in a first aspect, disclose a kind of disc spring endurance testing system, comprising: the self-locking electricity of central controller 1, relay Road 2, solenoid valve 3, cylinder 4, durable rack 5 and counter 6;
The central controller 1 is connected to the relay latching circuit 2, the self-locking electricity of relay by single-way switch Road 2, the solenoid valve 3 and the cylinder 4 are sequentially connected;
For the durable rack 5 for placing disc spring 7, the piston 8 of the cylinder 4 is correspondingly arranged at the top of the disc spring 7;
The test parameters is sent to the relay for obtaining preset test parameters by the central controller 1 Device latching circuit 2, the test parameters include when compressing the retarded closing of number, compression frequency, the relay latching circuit 2 Between the delay turn-off time of section and the relay latching circuit 2 section;
The relay latching circuit 2 was used within the retarded closing period, controlled the solenoid valve 3 to the gas The on-off pulse signal of the sending specific frequency of cylinder 4;In the preset delay turn-off time section, controls the solenoid valve 3 and stop It only works, wherein the specific frequency is consistent with the compression frequency;
The cylinder 4 is used to control the piston 8 according to the on-off pulse signal according to the compression frequency and carry out back pressure Contract the disc spring 7;
The cylinder 4 is connected with the central controller 1, and the central controller 1 is also used to piston 8 described in real-time monitoring Stroke, obtain the stroke variable quantity of the piston 8, and according to the stroke variable quantity of the piston 8, obtain the disc spring 7 Deformation quantity;
The counter 6 is connected with the solenoid valve 3, and the counter 6 for acquiring the on-off pulse letter in real time Number, and according to the on-off pulse signal, obtain the actual frequency that the piston 8 compresses the disc spring 7 back and forth, and by the reality At border number Real-time Feedback to the central controller 1;
The central controller 1 is also used to judge whether the actual frequency is greater than or equal to the compression number, is sentencing Disconnected result is when being, the central controller 1 is also used to disconnect the single-way switch, terminates test;
When the judging result is no, the central controller 1 is also used to judge whether the deformation quantity of the disc spring 7 is big In or equal to preset acceptable threshold;
When the deformation quantity of the disc spring 7 is greater than or equal to the preset acceptable threshold, the central controller 1 is used for The single-way switch is disconnected, test is terminated.
Optionally, the system also includes air pressure regulator 9, the air pressure regulator 9 includes digital display type air gauge And air pressure regulator, the air pressure regulator 9 are respectively connected to the central controller 1 and the cylinder 4;
The air pressure regulator 9 is used under the control of the central controller 1, adjusts the pressure of the cylinder 4, into And adjust the power that the piston 8 compresses the disc spring 7 back and forth;
The air pressure regulator 9 is also used to the pressure of cylinder 4 described in real-time monitoring, and the pressure of the cylinder 4 is anti- It is fed at the central controller 1.
Optionally,
The air pressure regulator 9 is also used to before endurance test starts, under the control of the central controller 1, Adjust the precompressed value of the cylinder 4.
Optionally, the durable rack 5 includes mounting bracket 50 and installation sleeve 51, and the mounting bracket 50 is for solid The fixed installation sleeve 51, the top of the installation sleeve 51 offers the cavity 510 for placing the disc spring 7;
The piston 8 is arranged at the top end opening of the cavity 510, positioned at the top of the disc spring 7.
Optionally, the mounting bracket 50 includes first baffle 501, second baffle 502, third baffle 503 and the 4th Baffle 504;
The third baffle 503 is transversely mounted between the first baffle 501 and the second baffle 502;
The fourth gear plate 504 is transversely mounted between the first baffle 501 and the second baffle 502;
The fourth gear plate 504 is located at the lower section of the third baffle 503;
The installation sleeve 51 is fixed on the fourth gear plate 504, and the cylinder 4 is fixed on the third baffle 503 On, the piston 8 passes through the third baffle 503, is arranged at the top end opening of the cavity 510.
Optionally, the system also includes power supply units;
The power supply unit be used for for the central controller 1, the relay latching circuit 2, the solenoid valve 3 and The counter 6 provides electric energy.
The application second aspect, discloses a kind of disc spring endurance test method, and the method is applied to the application first party Disc spring endurance testing system disclosed in face, which comprises
Central controller 1 obtains preset test parameters, and the test parameters is sent to relay latching circuit 2, The test parameters includes compressing number, compression frequency, retarded closing period of the relay latching circuit 2 and described The delay turn-off time section of relay latching circuit 2;
Within the retarded closing period, control solenoid valve 3 issues specific the relay latching circuit 2 to cylinder 4 The on-off pulse signal of frequency;In the preset delay turn-off time section, controls the solenoid valve 3 and stops working, wherein The specific frequency is consistent with the compression frequency;
The cylinder 4 controls piston 8 according to the compression frequency and compresses disc spring 7 back and forth according to the on-off pulse signal;
The stroke of piston 8 described in 1 real-time monitoring of central controller obtains the stroke variable quantity of the piston 8, and root According to the stroke variable quantity of the piston 8, the deformation quantity of the disc spring 7 is obtained;Counter 6 acquires the on-off pulse letter in real time Number, and according to the on-off pulse signal, obtain the actual frequency that the piston 8 compresses the disc spring 7 back and forth, and by the reality At border number Real-time Feedback to the central controller 1;
The central controller 1 judges whether the actual frequency is greater than or equal to the compression number, if judging result Be it is yes, then the central controller 1 disconnects single-way switch, terminates test;
If the judging result be it is no, the central controller 1 judges whether the deformation quantity of the disc spring 7 is greater than or waits In preset acceptable threshold;
If the deformation quantity of the disc spring 7 is greater than or equal to the preset acceptable threshold, the central controller 1 is disconnected The single-way switch terminates test.
Optionally, the method also includes:
Air pressure regulator 9 adjusts the pressure of the cylinder 4 under the central controller 1 control, and then described in adjustment Piston 8 compresses the power of the disc spring 7 back and forth;
The pressure of cylinder 4 described in 9 real-time monitoring of air pressure regulator, and by the pressure feedback of the cylinder 4 to institute It states at central controller 1.
Optionally, before endurance test starts, the method also includes:
The air pressure regulator 9 adjusts the precompressed value of the cylinder 4 under the central controller 1 control.
The embodiment of the present application discloses a kind of disc spring endurance testing system and method, the system include central controller, after Electric appliance latching circuit, solenoid valve, cylinder, durable rack and counter.Wherein, central controller is connected to by single-way switch Relay latching circuit, relay latching circuit, solenoid valve and cylinder are sequentially connected, and cylinder is connected with central controller, are counted Device is connected with solenoid valve, and for durable rack for placing disc spring, the piston of cylinder is correspondingly arranged at the top of disc spring.Utilizing this Shen Please disclosed system when carrying out endurance test to disc spring, relay latching circuit controls solenoid valve within the retarded closing period On-off pulse signal is issued to cylinder, the piston of cylinder is made to compress disc spring back and forth, when the actual frequency of compression disc spring reaches default Compression number when, central controller terminates to test, if actual frequency not up to compresses number, central controller judging When the deformation quantity of disc spring is more than preset acceptable threshold, terminate test.A kind of disc spring endurance testing system disclosed in the present application and Method is capable of the deformation quantity of real-time monitoring disc spring during the test, and in the deformation of disc spring compared to traditional experimental rig When amount is more than permissible range, stop test, effectively save test period improves test efficiency.
In addition, disc spring endurance testing system disclosed in the embodiment of the present application, it can be in advance to test by central controller Compression number and compression frequency in the process is configured, and improves the controllability of system.Also, during the test, lead to Cross the actual frequency that central controller obtains current compression disc spring in real time, the deformation quantity of real-time monitoring disc spring and compression disc spring Power can provide comprehensive, accurate test data to judge the fatigue life of disc spring.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is a kind of structural schematic diagram of disc spring endurance testing system disclosed in the embodiment of the present application;
Fig. 2 is the structural schematic diagram of another kind disc spring endurance testing system disclosed in the embodiment of the present application;
Fig. 3 is the structural schematic diagram of durable rack in a kind of disc spring endurance testing system disclosed in the embodiment of the present application;
Fig. 4 is a kind of workflow schematic diagram of disc spring endurance test method disclosed in the embodiment of the present application.
Specific embodiment
In order to solve the problems, such as that traditional disc spring durability test apparatus wastes time in test, reduces detection efficiency, Application discloses a kind of disc spring endurance testing system and method by following embodiment.
The application first embodiment discloses a kind of disc spring endurance testing system, shown in Figure 1, the system comprises: Central controller 1, relay latching circuit 2, solenoid valve 3, cylinder 4, durable rack 5 and counter 6.
The central controller 1 is connected to the relay latching circuit 2 by single-way switch.The self-locking electricity of relay Road 2, the solenoid valve 3 and the cylinder 4 are sequentially connected.
For the durable rack 5 for placing disc spring 7, the piston 8 of the cylinder 4 is correspondingly arranged at the top of the disc spring 7.
Before on-test, a certain number of disc spring test specimens are placed on durable rack 5 by operator, are then closed Single-way switch is closed, can start to test.During test, operator can artificially terminate to test by disconnecting single-way switch.
The test parameters is sent to the relay for obtaining preset test parameters by the central controller 1 Device latching circuit 2, the test parameters include when compressing the retarded closing of number, compression frequency, the relay latching circuit 2 Between the delay turn-off time of section and the relay latching circuit 2 section.In practical application, operator is in the central controller Input preset test parameters.
Relay latching circuit 2 just starts to test after the test parameters for receiving central controller transmission.The relay Device latching circuit 2 was used within the retarded closing period, is controlled the solenoid valve 3 to the cylinder 4 and is issued specific frequency On-off pulse signal;In the preset delay turn-off time section, controls the solenoid valve 3 and stop working, wherein is described Specific frequency is consistent with the compression frequency.
The cylinder 4 is used to control the piston 8 according to the on-off pulse signal according to the compression frequency and carry out back pressure Contract the disc spring 7.
Specifically, solenoid valve 3 is constantly in access shape when relay latching circuit 2 is in retarded closing period T1 State, at this moment, cylinder 4 will compress always disc spring under the control of solenoid valve 3 back and forth;Relay latching circuit 2 is in delay and disconnects When in period T2, solenoid valve 3 is constantly in off state, 4 stopping of cylinder movement.
It, can be according to specific test demand, setting retarded closing period T1 and delay turn-off time section in practical application The length of T2.When on-test, T1 starts to be delayed, and relay latching circuit was in the retarded closing period, when T1 prolongs When reaching, T2 starts to be delayed, and relay latching circuit is in delay turn-off time section, when T2, which is delayed, to be reached, relay Device latching circuit single cycle terminates.At this moment, to enter recirculation mode, then T1 continues to be delayed, repeat above procedure into The conversion of line delay state.
The cylinder 4 is connected with the central controller 1, and during test, the central controller 1 is also used to supervise in real time The stroke for surveying the piston 8 obtains the stroke variable quantity of the piston 8, and according to the stroke variable quantity of the piston 8, obtains The deformation quantity of the disc spring 7.
The stroke of piston refers to distance of the piston from an extreme position to another extreme position.Worked as by comparing piston Preceding stroke and last stroke, available piston stroke variable quantity, the trip variable quantity is in this compression process The deformation quantity of disc spring.By the stroke of real-time monitoring piston, the deformation quantity of each second compression disc spring is added up, can be obtained The total deformation quantity of disc spring.
The counter 6 is connected with the solenoid valve 3, and during test, the counter 6 is for described in acquisition in real time On-off pulse signal, and according to the on-off pulse signal, the actual frequency that the piston 8 compresses the disc spring 7 back and forth is obtained, And it will be at the actual frequency Real-time Feedback to the central controller 1.
The central controller 1 is also used to judge whether the actual frequency is greater than or equal to the compression number, is sentencing Disconnected result is when being, the central controller 1 is also used to disconnect the single-way switch, terminates test.
When the judging result is no, the central controller 1 is also used to judge whether the deformation quantity of the disc spring 7 is big In or equal to preset acceptable threshold.
When the deformation quantity of the disc spring 7 is greater than or equal to the preset acceptable threshold, the central controller 1 is used for The single-way switch is disconnected, test is terminated.
The above embodiments of the present application disclose a kind of disc spring endurance testing system, which includes central controller, relay Device latching circuit, solenoid valve, cylinder, durable rack and counter.Wherein, central controller by single-way switch be connected to after Electric appliance latching circuit, relay latching circuit, solenoid valve and cylinder are sequentially connected, and cylinder is connected with central controller, counter It is connected with solenoid valve, for durable rack for placing disc spring, the piston of cylinder is correspondingly arranged at the top of disc spring.Utilizing the application Disclosed system to disc spring carry out endurance test when, relay latching circuit within the retarded closing period, control solenoid valve to Cylinder issues on-off pulse signal, and the piston of cylinder is made to compress disc spring back and forth, when the actual frequency of compression disc spring reaches preset When compressing number, central controller terminates to test, if actual frequency not up to compresses number, central controller is judging dish When the deformation quantity of spring is more than preset acceptable threshold, terminate test.A kind of disc spring endurance testing system disclosed in the present application, can During the test, the deformation quantity of real-time monitoring disc spring, and when the deformation quantity of disc spring is more than permissible range, stop test, section About test period effectively improves detection efficiency.
Further, shown in Figure 2, the system also includes air pressure regulator 9, the air pressure regulator 9 is wrapped Digital display type air gauge and air pressure regulator are included, the air pressure regulator 9 is respectively connected to the central controller 1 and institute State cylinder 4.
The air pressure regulator 9 is used under the control of the central controller 1, adjusts the pressure of the cylinder 4, into And adjust the power that the piston 8 compresses the disc spring 7 back and forth.During actual tests, operator can be controlled by center Device 1 automatically adjusts the pressure of the cylinder 4, and the pressure of cylinder 4 can also be manually adjusted by air pressure regulator, enhances pilot system Operability.
The air pressure regulator 9 is also used to the pressure of cylinder 4 described in real-time monitoring, and the pressure of the cylinder 4 is anti- It is fed at the central controller 1.
Further, the air pressure regulator 9 is also used to before endurance test starts, in the central controller 1 Control under, adjust the precompressed value of the cylinder 4.
Specifically, operator installs a certain number of disc spring test specimens to durable rack 5 before endurance test On, precompressed value is arranged by central controller, cylinder is made to apply certain pressure to disc spring test specimen, simulates the practical peace of disc spring State when dress.The size of precompressed value can be arranged according to the quantity of disc spring and test requirements document, in one implementation, can 0.5MPa is set by precompressed value, at this moment, cylinder applies the pressure of about 1200N to disc spring test specimen.
Disc spring endurance testing system disclosed in the embodiment of the present application, by central controller can in advance to test during Compression number and compression frequency be configured, improve the controllability of test.In addition, during the test, passing through center Controller obtains the actual frequency of current compression disc spring, the deformation quantity of real-time monitoring disc spring and the power for compressing disc spring, energy in real time Enough to judge that the fatigue life of disc spring provides comprehensive, accurate test data, necessary reference is provided for the improvement of Disc Spring Value.
Further, shown in Figure 3, the durable rack 5 includes mounting bracket 50 and installation sleeve 51, the peace For fixing the installation sleeve 51, the top of the installation sleeve 51 is offered for placing the disc spring 7 dress bracket 50 Cavity 510.
Installation sleeve 51 is bolted in mounting bracket 50, and the size of cavity 510 is set according to the size of disc spring. In practical application, there are many specifications and models for disc spring, and corresponding installation sleeve can be set multiple.If the disc spring type currently tested It number changes, installation sleeve can be replaced, cavity is made to be consistent with current disc spring size.
The piston 8 is arranged at the top end opening of the cavity 510 by piston rod, positioned at the upper of the disc spring 7 Side.
Further, the mounting bracket 50 includes first baffle 501, second baffle 502, third baffle 503 and the Four baffles 504.
The third baffle 503 is transversely mounted between the first baffle 501 and the second baffle 502.
The fourth gear plate 504 is transversely mounted between the first baffle 501 and the second baffle 502.
The fourth gear plate 504 is located at the lower section of the third baffle 503.
The installation sleeve 51 is bolted on the fourth gear plate 504, and the cylinder 4 is fixed on the third On baffle 503, the piston 8 passes through the third baffle 503, is arranged at the top end opening of the cavity 510.
Further, the system also includes power supply units.
The power supply unit be used for for the central controller 1, the relay latching circuit 2, the solenoid valve 3 and The counter 6 provides electric energy.
Following is the application embodiment of the method, is applied to the application system embodiment.For in the application embodiment of the method Undisclosed details please refers to the application system embodiment.
Correspondingly, another embodiment of the application discloses a kind of disc spring endurance test method, the method is applied to this Shen Please disc spring endurance testing system disclosed in first embodiment, it is shown in Figure 4, which comprises
Step S10, central controller 1 obtains preset test parameters, and the test parameters is sent to relay certainly Lock circuit 2, the test parameters include compressing the retarded closing period of number, compression frequency, the relay latching circuit 2 And the delay turn-off time section of the relay latching circuit 2.
Step S20, the described relay latching circuit 2 controls solenoid valve 3 to cylinder 4 within the retarded closing period Issue the on-off pulse signal of specific frequency;In the preset delay turn-off time section, controls the solenoid valve 3 and stop work Make, wherein the specific frequency is consistent with the compression frequency.
Step S30, the described cylinder 4 controls piston 8 according to the compression frequency and carrys out back pressure according to the on-off pulse signal Contracting disc spring 7.
Step S40, the stroke of piston 8 described in described 1 real-time monitoring of central controller, the stroke for obtaining the piston 8 become Change amount, and according to the stroke variable quantity of the piston 8, obtain the deformation quantity of the disc spring 7;Counter 6 acquires described logical in real time Disconnected pulse signal, and according to the on-off pulse signal, the actual frequency that the piston 8 compresses the disc spring 7 back and forth is obtained, and At the actual frequency Real-time Feedback to the central controller 1.
Step S50, the described central controller 1 judges whether the actual frequency is greater than or equal to the compression number, if Judging result be it is yes, then follow the steps the operation of S60, if judging result be it is no, then follow the steps the operation of S70.
Step S60, the described central controller 1 disconnects single-way switch, terminates test.
Step S70, the described central controller 1 judges whether the deformation quantity of the disc spring 7 is greater than or equal to and preset allows Threshold value if the determination result is YES thens follow the steps the operation of S60, if judging result be it is no, return to step the behaviour of S40 Make.
Further, the method also includes:
Air pressure regulator 9 adjusts the pressure of the cylinder 4 under the central controller 1 control, and then described in adjustment Piston 8 compresses the power of the disc spring 7 back and forth
The pressure of cylinder 4 described in 9 real-time monitoring of air pressure regulator, and by the pressure feedback of the cylinder 4 to institute It states at central controller 1.
Further, before endurance test starts, operator installs a certain number of disc spring test specimens to resistance to On long rack 5, the air pressure regulator 9 is controlled by central controller 1, adjusts the precompressed value of the cylinder 4, simulates disc spring State when actual installation.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real It is existing.When implemented in software, it can entirely or partly be realized in the form of computer product.The computer program product Including one or more computer instructions.It is all or part of when loading on computers and executing the computer program instructions Ground is generated according to process or function described in the embodiment of the present application.The computer can be general purpose computer, special purpose computer, Computer network or other programmable devices.The computer instruction may be stored in a computer readable storage medium, or Person is transmitted from a computer readable storage medium to another computer readable storage medium, for example, the computer instruction Can from a web-site, computer, server or data center by wired or wireless way to another web-site, Computer, server or data center are transmitted.The computer readable storage medium can be what computer can access Any usable medium either includes the data storage devices such as one or more usable mediums integrated server, data center. The usable medium can be magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor Medium (such as solid state hard disk) etc..
Combine detailed description and exemplary example that the application is described in detail above, but these explanations are simultaneously It should not be understood as the limitation to the application.It will be appreciated by those skilled in the art that without departing from the application spirit and scope, A variety of equivalent substitution, modification or improvements can be carried out to technical scheme and embodiments thereof, these each fall within the application In the range of.The protection scope of the application is determined by the appended claims.

Claims (9)

1. a kind of disc spring endurance testing system characterized by comprising central controller (1), relay latching circuit (2), electricity Magnet valve (3), cylinder (4), durable rack (5) and counter (6);
The central controller (1) is connected to the relay latching circuit (2) by single-way switch, the self-locking electricity of relay Road (2), the solenoid valve (3) and the cylinder (4) are sequentially connected;
For the durable rack (5) for placing disc spring (7), the piston (8) of the cylinder (4) is correspondingly arranged at the disc spring (7) Top;
The test parameters is sent to the relay for obtaining preset test parameters by the central controller (1) Latching circuit (2), the test parameters include the retarded closing of compression number, compression frequency, the relay latching circuit (2) Period and the delay turn-off time of the relay latching circuit (2) section;
The relay latching circuit (2) was used within the retarded closing period, controlled the solenoid valve (3) to the gas The on-off pulse signal of cylinder (4) sending specific frequency;In the preset delay turn-off time section, the solenoid valve is controlled (3) it stops working, wherein the specific frequency is consistent with the compression frequency;
The cylinder (4) is used to control the piston (8) according to the on-off pulse signal according to the compression frequency and carry out back pressure The disc spring that contracts (7);
The cylinder (4) is connected with the central controller (1), and the central controller (1) is also used to living described in real-time monitoring The stroke for filling in (8) obtains the stroke variable quantity of the piston (8), and according to the stroke variable quantity of the piston (8), obtains institute State the deformation quantity of disc spring (7);
The counter (6) is connected with the solenoid valve (3), and the counter (6) for acquiring the on-off pulse in real time Signal, and according to the on-off pulse signal, the actual frequency that the piston (8) compresses the disc spring (7) back and forth is obtained, and will At the actual frequency Real-time Feedback to the central controller (1);
The central controller (1) is also used to judge whether the actual frequency is greater than or equal to the compression number, is judging As a result for when being, the central controller (1) is also used to disconnect the single-way switch, terminate test;
When the judging result is no, the central controller (1) is also used to judge whether the deformation quantity of the disc spring (7) is big In or equal to preset acceptable threshold;
When the deformation quantity of the disc spring (7) is greater than or equal to the preset acceptable threshold, the central controller (1) is used for The single-way switch is disconnected, test is terminated.
2. system according to claim 1, which is characterized in that the system also includes air pressure regulator (9), the gas Pressure regulating device (9) includes digital display type air gauge and air pressure regulator, and the air pressure regulator (9) is respectively connected to described Central controller (1) and the cylinder (4);
The air pressure regulator (9) is used under the control of the central controller (1), adjusts the pressure of the cylinder (4), And then adjust the power that the piston (8) compresses the disc spring (7) back and forth;
The air pressure regulator (9) is also used to the pressure of cylinder described in real-time monitoring (4), and by the pressure of the cylinder (4) It feeds back at the central controller (1).
3. system according to claim 2, which is characterized in that
The air pressure regulator (9) is also used to before endurance test starts, under the control of the central controller (1), Adjust the precompressed value of the cylinder (4).
4. system according to claim 1, which is characterized in that the durable rack (5) include mounting bracket (50) and Installation sleeve (51), the mounting bracket (50) is for fixing the installation sleeve (51), the top of the installation sleeve (51) Offer the cavity (510) for placing the disc spring (7);
The piston (8) is arranged at the top end opening of the cavity (510), is located at the top of the disc spring (7).
5. system according to claim 4, which is characterized in that the mounting bracket (50) includes first baffle (501), Two baffles (502), third baffle (503) and fourth gear plate (504);
The third baffle (503) is transversely mounted between the first baffle (501) and the second baffle (502);
The fourth gear plate (504) is transversely mounted between the first baffle (501) and the second baffle (502);
The fourth gear plate (504) is located at the lower section of the third baffle (503);
The installation sleeve (51) is fixed on the fourth gear plate (504), and the cylinder (4) is fixed on the third baffle (503) on, the piston (8) passes through the third baffle (503), is arranged at the top end opening of the cavity (510).
6. system according to claim 1, which is characterized in that the system also includes: power supply unit;
The power supply unit be used for for the central controller (1), the relay latching circuit (2), the solenoid valve (3) with And the counter (6) provides electric energy.
7. a kind of disc spring endurance test method, which is characterized in that the method is applied to as described in any one of claim 1 to 6 Disc spring endurance testing system, which comprises
Central controller (1) obtains preset test parameters, and the test parameters is sent to relay latching circuit (2), The test parameters includes compression number, compression frequency, the retarded closing period of the relay latching circuit (2) and institute State the delay turn-off time section of relay latching circuit (2);
Within the retarded closing period, control solenoid valve (3) issues special the relay latching circuit (2) to cylinder (4) Determine the on-off pulse signal of frequency;In the preset delay turn-off time section, controls the solenoid valve (3) and stops working, Wherein, the specific frequency is consistent with the compression frequency;
The cylinder (4) controls piston (8) according to the compression frequency and compresses disc spring back and forth according to the on-off pulse signal (7);
The stroke of piston (8) described in central controller (1) real-time monitoring, obtains the stroke variable quantity of the piston (8), and According to the stroke variable quantity of the piston (8), the deformation quantity of the disc spring (7) is obtained;Counter (6) acquires the on-off in real time Pulse signal, and according to the on-off pulse signal, the actual frequency that the piston (8) compresses the disc spring (7) back and forth is obtained, And it will be at the actual frequency Real-time Feedback to the central controller (1);
The central controller (1) judges whether the actual frequency is greater than or equal to the compression number, if judging result is It is that then the central controller (1) disconnects single-way switch, terminates test;
If the judging result be it is no, the central controller (1) judges whether the deformation quantity of the disc spring (7) is greater than or waits In preset acceptable threshold;
If the deformation quantity of the disc spring (7) is greater than or equal to the preset acceptable threshold, the central controller (1) is disconnected The single-way switch terminates test.
8. the method according to the description of claim 7 is characterized in that the method also includes:
Under air pressure regulator (9) is controlled in the central controller (1), the pressure of the cylinder (4) is adjusted, and then adjust institute State the power that piston (8) compresses the disc spring (7) back and forth;
The pressure of cylinder (4) described in air pressure regulator (9) real-time monitoring, and extremely by the pressure feedback of the cylinder (4) At the central controller (1).
9. according to the method described in claim 8, it is characterized in that, before endurance test starts, the method also includes:
Under the air pressure regulator (9) controls in the central controller (1), the precompressed value of the cylinder (4) is adjusted.
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