CN107036892A - Spring fatigue experimental device and spring fatigue test method - Google Patents
Spring fatigue experimental device and spring fatigue test method Download PDFInfo
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- CN107036892A CN107036892A CN201710393247.8A CN201710393247A CN107036892A CN 107036892 A CN107036892 A CN 107036892A CN 201710393247 A CN201710393247 A CN 201710393247A CN 107036892 A CN107036892 A CN 107036892A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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Abstract
The present invention relates to a kind of spring fatigue experimental device and spring fatigue test method, belong to railway casting technical field.Spring fatigue experimental device includes fixed seat, orbital segment, spring component, fixation kit and pressure test component.Orbital segment is arranged at fixed seat, and spring component fits through fixation kit with orbital segment and is fixed on fixed seat, and pressure test component includes being used for the pressure head for applying vertical direction active force to orbital segment.In the spring fatigue test method, apply the active force of vertical direction to orbital segment using pressure head, amount of force, frequency and vibration amplitude can be also adjusted according to the standards of TB/T 2,329 2002 according to actual conditions.In order to more accurately simulate the actual use operating mode of spring, while fatigue test is carried out, it can realize and salt air corrosion is carried out to spring, simulate the actual working environment residing for spring, the fatigue behaviour of spring under actual service condition can accurately more be embodied by testing the data that measure, and the fatigue data of spring is closer to actual conditions.
Description
Technical field
The present invention relates to railway casting technical field, in particular to a kind of spring fatigue experimental device and spring
Fatigue test method.
Background technology
Spring is the spring secures rail to sleeper that rail is fixed on sleeper or non-fragment orbit.With the development of science and technology the iron of China
Road is built mileage and lifted at a high speed, and especially heavy duty and high-speed railway is even more to reach world lead level.It is fast with railway cause
Speed development, the requirement to the species, quantity of spring is more and more, and the requirement to quality is more and more stricter.Spring fatigue test is
Very important inspection project in its type inspection.The spring fatigue test being substantially carried out in reality is to be fixed on spring
In specific mold, apply assembling displacement in its toe-end and apply dynamic displacement on this basis, observation spring is loaded fixed
Whether it is broken or cracks after certain test number (TN) under frequency.Spring that is unbroken or cracking also needs measurement
Deflection before and after experiment.
Existing spring fatigue test mainly applies active force by pressure head to spring, observes the fatigue data of spring.But
Existing spring experiment and the actual use operating mode of spring are not inconsistent, and can not especially be embodied in the fatigue behaviour under the conditions of environmental corrosion,
Therefore the spring fatigue data obtained can not represent the real military service situation of spring, it is necessary to design a kind of new spring fatigue examination
Experiment device.
The content of the invention
It is an object of the invention in view of the above-mentioned problems, providing a kind of spring fatigue experimental device and spring fatigue test side
Method, is improved above mentioned problem.
What embodiments of the invention were realized in：
The invention provides a kind of spring fatigue experimental device, including fixed seat, orbital segment, spring component, fixation kit
And pressure test component.Orbital segment is arranged at fixed seat, and spring component includes at least two springs, and two of which spring is symmetrically set
The both sides of orbital segment are placed in, the two ends of spring press on orbital segment and fixed seat respectively, and spring is fixed on solid by fixation kit
Reservation, pressure test component includes being used for the pressure head for applying vertical direction active force to orbital segment.
In this embodiment, the amount of force of pressure head, frequency and vibration amplitude foundation TB/T2329-2002 standards,
It can be adjusted according to actual conditions.
In optional embodiment of the present invention, spring fatigue experimental device also includes protective cover and at least two salt atomizings
Pipe, protective cover cover is buckled in outside orbital segment, spring and fixation kit and protective cover is connected with fixed seat, and protective cover offers through hole,
Pressure head through through hole and can act on orbital segment, and salt fog injection spray pipe correspondence spring is set, and one end of salt fog injection spray pipe is stretched into anti-
Shield is interior and salt fog injection spray pipe is used to import salt fog in protective cover.
In optional embodiment of the present invention, spring fatigue experimental device also includes salt fog generating assembly, salt fog generation group
Part is connected with salt fog injection spray pipe and salt fog generating assembly is used to provide salt atomizing.
In optional embodiment of the present invention, salt fog injection spray pipe points to spring and salt fog injection spray pipe is fixed with protective cover and connected
Connect.
In optional embodiment of the present invention, one end being located in protective cover of salt fog injection spray pipe is provided with shower nozzle.
In optional embodiment of the present invention, spring fatigue experimental device also includes salt fog deposition detection components.
In optional embodiment of the present invention, protective cover is anticorrosive plexiglass tent.
In optional embodiment of the present invention, the junction of protective cover and fixed seat is provided with seal, and seal is used for
Prevent salt fog from revealing.
In optional embodiment of the present invention, protective cover is provided with observation panel, and observation panel passes through rotatable with protective cover
The observation door of connection is opened or closed.
Present invention also offers a kind of spring fatigue test method, using above-mentioned spring fatigue experimental device, spring is tired
Labor test method includes：Orbital segment and spring component are placed in enclosed environment, salt atomizing is carried out to spring, meanwhile, with pressure
Head applies the active force of vertical direction to orbital segment, and external control system reads the fatigue data of spring.
Compared with prior art, beneficial effects of the present invention are：
Based on above-described embodiment, the invention provides a kind of spring fatigue experimental device and spring fatigue test method, bullet
Bar is combined with orbital segment, applies the active force of vertical direction to orbital segment using pressure head, simulates the actual condition of spring, meanwhile,
Salt spray corrosion test, the working environment residing for simulation spring are carried out to spring so that the data that measure of experiment are closer to spring
Fatigue behaviour under real operating mode, the fatigue data of spring is closer to actual conditions.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be attached to what is used required in embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore is not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is a kind of structural representation of the spring fatigue experimental device of first embodiment of the invention；
Fig. 2 is the structural representation of Fig. 1 fixation kit；
Fig. 3 is another structural representation of the spring fatigue experimental device of first embodiment of the invention；
The structural representation for the observation door that Fig. 4 is Fig. 3.
Icon：100- spring fatigue experimental devices；11- fixed seats；12- orbital segments；13- spring components；131- springs；
14- fixation kits；141- anchor bolts；142- locking members；15- pressure test components；151- pressure heads；16- protective covers；161- is close
Sealing；162- observation panels；163- observes door；164- through holes；17- salt fog injection spray pipes；171- shower nozzles；18- salt fog generating assemblies；
19- salt fog deposition detection components.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be arranged and designed with a variety of configurations.
Therefore, the detailed description of embodiments of the invention below to providing in the accompanying drawings is not intended to limit claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model that the present invention is protected
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it further need not be defined and explained in subsequent accompanying drawing.
In the description of the invention, it is necessary to which explanation, the orientation or position relationship of the instruction such as term " interior ", " outer " are base
In orientation shown in the drawings or position relationship, or the orientation usually put when using of the invention product or position relationship, only
It is to be described for the ease of the description present invention with simplified, rather than indicates or imply that the device or element of meaning must be with specifically
Orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " the
Two " etc. are only used for distinguishing description, and it is not intended that indicating or implying relative importance.
In the description of the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can be
Mechanically connect or electrically connect；Can be joined directly together, can also be indirectly connected to by intermediary, can be two
The connection of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood in the present invention
In concrete meaning.
First embodiment
Refer to Fig. 1, the present embodiment provides a kind of spring fatigue experimental device 100, including fixed seat 11, orbital segment 12,
Spring component 13, fixation kit 14 and pressure test component 15.
In the present embodiment, choose one section of rail and be defined as orbital segment 12, orbital segment 12 is arranged at fixed seat 11, spring
Component 13 includes at least two springs 131, in order that obtaining the two ends stress balance of orbital segment 12, two of which spring 131 is symmetrical
The both sides of orbital segment 12 are arranged at, the two ends of spring 131 press on orbital segment 12 and fixed seat 11 respectively, and spring 131 passes through solid
Determine component 14 and be fixed on fixed seat 11, so that orbital segment 12 is fixed on fixed seat 11；Pressure test component 15 includes being used for
Apply the pressure head 151 of vertical direction active force to orbital segment 12.
In order to cause orbital segment 12 to fix, meanwhile, orbital segment 12 is when by 151 active force of pressure head, real embodiment
The stressing conditions of orbital segment 12, fixed seat 11 can be made up of concrete material.The fixed seat 11 that concrete material is made, can
The impulsive force that orbital segment 12 is subject to is absorbed, will not rebound impulsive force of the pressure head 151 for orbital segment 12, real embodiment railroad track
Operating mode, meanwhile, relative to the fixed seat 11 of the materials such as timber, the fixed seat 11 of concrete material has certain connection strong
Degree.For convenient processing and manufacture, in the present embodiment, fixed seat 11 is rectangular parallelepiped structure, and fixed seat 11 has certain thickness.Gu
The material and specification of reservation 11 can in different forms, and user can choose according to actual conditions.
Orbital segment 12 is a part for rail, that is, employs the rail section of certain length, and the length of orbital segment 12 can
Freely to set, user can choose according to actual conditions, as long as the length of orbital segment 12 enables to spring 131 to press on
Orbital segment 12.The length of orbital segment 12 is difficult too short, shorter orbital segment 12 and the stress of spring 131 is concentrated, for
Result of the test has an impact；If the length of orbital segment 12 is longer, it can also cause the force dispersion of spring 131, same influence experiment
Effect.The physical length suggestion of orbital segment 12 choose sleeper spacing (sleeper spacing refers to the distance between two sleepers,
Usually 52~62 centimetres), or multiple sleeper spacing, it is to keep orbital segment 12 to simulate truly to choose sleeper spacing
Track operating mode.
Railway track is to support locomotive and the part in locomotive direction, and rail is the sleeper that railway roadbed is fixed on by spring secures rail to sleeper
On.The buckling piece of spring secures rail to sleeper is mainly spring 131, its bending and torsional deformation by spring 131, produces buckle press effect
In orbit, long-term effectively ensure rail between being reliably connected, as far as possible keep track globality, prevent rail it is relative
In vertically and horizontally moving for sleeper, it is ensured that gauge is normal, so as to ensure rail vehicle driving safety.Additionally, due to train wheel and steel
The contact of rail belongs to rigid contact, therefore inevitable produce is shaken, and the special elastic construction of spring 131 makes it also have absorption
The impact energy produced when vehicle is crossed, reaches the effect of damping.Spring 131 is worked under the stress of alternation repeatedly, and it holds
By bending, reverse, fatigue and corrosion etc. a variety of effects, vehicle by when, still suffer from high temporary impact load, so
It is very strict to the performance requirement of spring 131.
In the present embodiment, spring component 13 includes at least two springs 131, in order that the stress balance of orbital segment 12 is obtained,
Two of which spring 131 is located at the both sides of orbital segment 12.As the optional mode of the present embodiment, spring 131 is ω shape springs
131.ω shapes spring 131 presses on spring 131 in orbital segment 12 and fixed seat 11, the modes of emplacement and railroad track of spring 131
Modes of emplacement it is consistent.That is, by the special structure form of spring 131, the impact endurance test shock that orbital segment 12 is transmitted is absorbed,
Play a part of damping.Spring 131 can be diversified forms, and user can choose the bullet of different forms according to actual conditions
Bar 131.
Further, the quantity of spring 131 is even number, and multiple springs 131 are symmetrically distributed in the both sides of orbital segment 12.Bullet
The quantity of bar 131 is chosen according to the length of orbital segment 12, and spring 131 is symmetrical can to cause the uniform force of orbital segment 12,
Meet the actual condition of the spring 131 of railroad track.The distance between adjacent two spring 131 positioned at the homonymy of orbital segment 12
Can be chosen according to sleeper spacing, that is to say, that the installation site of spring 131 in strict accordance with spring in railroad track 131 position
Put to choose.
In the present embodiment, fixation kit 14 plays a part of fixed spring component 13 and orbital segment 12.As illustrated, solid
Component 14 is determined through spring 131 and is connected with fixed seat 11, because the two ends of spring 131 press on orbital segment 12 and fixed respectively
Seat 11 so that spring 131 and orbital segment 12 are fixed on fixed seat 11, limitation spring 131 and the phase of orbital segment 12 by fixation kit 14
Vertically moved for fixed seat 11.It is pointed out that the actual conditions in order to simulate railroad track, fixed seat 11 is
Horizontal positioned, fixation kit 14 is vertically to be connected with fixed seat 11.
Further, spring component 13 is fixed on fixed seat 11 by fixation kit 14 for convenience, and fixation kit 14 includes
Anchor bolt 141 corresponding with spring component 13 and the locking member 142 coordinated with anchor bolt 141, anchor bolt 141 are embedded in advance
Fixed seat 11 (as shown in Figure 2).That is, one end of anchor bolt 141 is embedded in fixed seat 11, the other end passes through spring
131 are fixed spring 131 by locking member 142.The pre-buried setting of anchor bolt 141, had both facilitated the spacing of spring 131, might be used also
To increase the bonding strength of anchor bolt 141 and fixed seat 11, it is easy to operating personnel to tighten or change locking member 142.
In the present embodiment, pressure test component 15 includes being used for the pressure head for applying vertical direction active force to orbital segment 12
151.Pressure test component 15 can be forcing press or the other assemblies for providing pressure dynamics, and user can basis
Actual conditions are chosen.During pressure test, sensor is set on pressure head 151, external equipment record pressure head 151 acts on orbital segment
12 test datas produced, operating personnel contrast the tired situation for obtaining spring 131 by data analysis.Pressure head 151 is in power
Under effect, with certain frequency reciprocating in orbital segment 12, impulsive force is transferred to by spring 131 by orbital segment 12, operated
The test data that personnel are read by external equipment, obtains the fatigue yield curve of spring 131.That is, in the present embodiment,
Pressure head 151 acts on orbital segment 12, and spring 131 is acted on different from pressure head 151 in the prior art, and such test operation is obtained
The fatigue yield data of spring 131 can more embody true fatigue yield situation of the spring 131 in railroad track.
Because the actual condition of spring 131 is also present in the influence of the factors such as corrosion, the present embodiment, as shown in figure 3, the bullet
Bar fatigue experimental device 100 also includes protective cover 16 and at least two salt fog injection spray pipes 17.Protective cover 16 cover be buckled in orbital segment 12,
Outside spring 131 and fixation kit 14, and protective cover 16 is connected with fixed seat 11, and protective cover 16 offers through hole 164, pressure head
151 can pass through through hole 164 and act on orbital segment 12, and protective cover 16 causes orbital segment 12, spring 131 and fixation kit 14
In the environment of closing；The correspondence spring 131 of salt fog injection spray pipe 17 is set, and one end of salt fog injection spray pipe 17 is stretched into protective cover 16,
And salt fog injection spray pipe 17 is used to import salt fog in protective cover 16.Salt fog injection spray pipe 17 is used cooperatively with protective cover 16, can
With the sprinkling salt atomizing in protective cover 16, the real working condition of spring 131 is simulated.The quantity of salt fog injection spray pipe 17 can be according to reality
Border situation is chosen, and when the volume of protective cover 16 is larger, the quantity of salt fog injection spray pipe 17 can suitably increase, salt fog injection spray pipe 17
It can be set with the both sides of symmetrical orbital segment 12, the i.e. correspondence of salt fog injection spray pipe 17 spring 131.
In the present embodiment, spring fatigue experimental device 100 also include salt fog generating assembly 18, salt fog generating assembly 18 with
Salt fog injection spray pipe 17 is connected, and salt fog generating assembly 18 is used to provide salt atomizing so that salt atomizing can pass through salt atomizing
Pipe 17 is delivered in protective cover 16.Salt fog generating assembly 18 is prior art, is not described in detail in the present embodiment.
Further, salt fog injection spray pipe 17 points to spring 131, and salt fog injection spray pipe 17 is fixedly connected with protective cover 16.
That is, salt fog injection spray pipe 17 sprays salt atomizing towards spring 131；Meanwhile, fixed for the ease of salt fog injection spray pipe 17,
Salt fog injection spray pipe 17 is fixedly connected with protective cover 16, prevented in use, salt fog injection spray pipe 17 is relative to protective cover 16
Shift position.Salt fog injection spray pipe 17 can be diversified forms with the mode that is fixedly connected of protective cover 16, such as riveting, gluing,
User can choose different connected modes according to actual conditions.As the optional mode of the present embodiment, for the ease of salt fog
Injection spray pipe 17 is fixed, meanwhile, it is easy to salt fog injection spray pipe 17 to change, salt fog injection spray pipe 17 passes through fixing glue gluing with protective cover 16.
In order that salt fog is dispersed in protective cover 16, the one end for being located at protective cover 16 setting of salt fog injection spray pipe 17
There is shower nozzle 171.The salt fog that shower nozzle 171 can transmit salt fog injection spray pipe 17 is dispersed, it is to avoid salt fog concentrates on salt atomizing
The port of export of pipe 17.Shower nozzle 171 is prior art, can be atomizer 171, or the porous nozzle of other forms
171, the effect for disperseing salt fog is primarily served, user can choose different shower nozzles 171 according to actual conditions.
In order to rationally monitor the fountain height of salt fog, the spring fatigue experimental device 100 also includes salt fog deposition detection group
Part 19.Salt fog deposition detection components 19 can measure the fountain height of the inner salt atomizing of protective cover 16, and user can be according to salt
The data of mist deposition detection components 19, the flow of the salt fog of the transmission of adjustment salt fog injection spray pipe 17 so that the salt in protective cover 16
Atomizing amount is in a suitable scope.User can determine according to the length of orbital segment 12, the volume of protective cover 16
The spray amount of salt fog, causes the spray amount of salt fog to be consistent with the operating mode of conventional railroad track spring 131 as far as possible.Due to each
Environment residing for the railroad track in area is different, and user can choose salt fog according to local railroad track corrosion condition
Spray amount.
Further, because salt fog has certain corrosivity, in order to avoid protective cover 16 corrodes, and bullet can clearly be observed
The fatigue test of bar 131, protective cover 16 is anticorrosive plexiglass tent.Lucite has certain resistance to corrosion, and thoroughly
Bright, user can clearly observe the fatigue test of spring 131.
In order to prevent the salt fog leakage being located in protective cover 16, protective cover 16 and the junction of fixed seat 11 are provided with sealing
Part 161 (as shown in Figure 4).The gap that seal 161 can be filled up effectively between protective cover 16 and fixed seat 11 so that salt fog without
Method is revealed by the connection gap of protective cover 16 and fixed seat 11.Seal 161 can in a variety of forms, such as fluid sealant, sealing
Pad etc., user can choose according to actual conditions.As the optional mode of the present embodiment, seal 161 is chosen for sealing gasket,
Sealing gasket is set in the junction of protective cover 16 and fixed seat 11, and the cover of protective cover 16 is buckled in fixed seat 11 so that protective cover 16
Sealed with the connection gap of fixed seat 11 by sealing gasket.The setting of sealing gasket, is easy to the separation of protective cover 16 and fixed seat 11,
Convenient use person's mounting and adjusting orbital segment 12, spring 131 and fixation kit 14.
Further, protective cover 16 is provided with observation panel 162 and the observation door 163 for opening or closing observation panel 162,
As shown in figure 4, observation door 163 is rotatably connected with protective cover 16.The bullet that impenetrating mouth convenient use person is checked in protective cover 16
Bar 131, observation door 163 is easy to open or close observation panel 162, it is to avoid the leakage of salt fog.
The operation principle of the embodiment of the present invention is：
The orbital segment 12 of certain length is chosen, orbital segment 12 is positioned over fixed seat 11, it is symmetrical in the both sides of fixed seat 11
Spring 131 is set, and spring 131 presses on orbital segment 12 and fixed seat 11 simultaneously, with the anchor bolt 141 for being embedded in fixed seat 11 in advance
Spring 131, orbital segment 12 are fixed on fixed seat 11, the preliminary assembling of the experimental rig of spring 131 is completed.By anticorrosive organic glass
Glass cover cover is buckled in outside orbital segment 12, spring 131 and fixation kit 14, and salt fog is sprayed into protective cover 16 by salt fog injection spray pipe 17,
Apply the active force of vertical direction to orbital segment 12 with the pressure head 151 of pressure test component 15, read by external test arrangements
Data, draw the fatigue yield curve of spring 131.
It is pointed out that the test method that the present embodiment is used simulates the real working condition of railroad track, the position of spring 131
Put and be arranged at intervals with reference to the spring 131 on railroad track in practice, salt fog spray flux voluntarily can be chosen with reference to local environment.
The embodiment of the present invention has the beneficial effect that：
A kind of spring fatigue experimental device 100 is above mentioned embodiment provided, the unit simulation spring 131 is in railroad track
Actual condition, the actual fatigue data of spring 131 is measured by applying active force to orbital segment 12, in course of exerting pressure
Salt fog is sprayed to spring 131 by outside salt fog generating assembly 18 so that the closer real operating mode of environment residing for spring 131,
The fatigue data of spring 131 is measured closer to the real working condition of spring 131 by this device.
Second embodiment
The present embodiment provides a kind of spring fatigue test method, using the spring fatigue experimental device 100 of first embodiment,
The spring fatigue test method includes：
Orbital segment 12 and spring component 13 are placed in the environment of closing, salt atomizing is carried out to spring 131, meanwhile, use
Pressure head 151 applies the active force of vertical direction to orbital segment 12, and amount of force, frequency and Oscillation Amplitude are according to TB/T 2329-
2002 standards, can also be adjusted according to actual condition.External control system reads the fatigue data of spring 131.
The spring 131 directly acted in spring 131, this method relative to pressure head 151 in the prior art is closer to railway
Orbital segment 12 and spring component 13, are placed in enclosed environment, and lead to by the actual condition of spring 131 in track using protective cover 16
Cross salt fog generating assembly 18 and salt atomizing is carried out to spring 131 so that the closer actual rail of environment residing for spring 131
Environment residing for road, the fatigue data of spring 131 measured in this way is surveyed closer to the actual fatigue behaviour of spring 131
The data obtained are more convincing.
It is pointed out that the spring fatigue experimental device 100 and spring fatigue test method may not only be applied to spring 131
The detection of resistance to corrosion fatigue performance, the corrosion resistant of the matching components such as the track pad matched, anchor bolt 141 can be also realized simultaneously
Lose the detection of fatigue behaviour.
To sum up, the invention provides a kind of spring fatigue experimental device 100 and spring fatigue test method, spring 131 with
Orbital segment 12 is combined, and applies the active force of vertical direction to orbital segment 12 using pressure head 151, simulates the actual condition of spring 131,
Meanwhile, salt fog, the working environment residing for simulation spring 131 are sprayed to spring 131 so that the data that measure of experiment are closer to spring
The curve of fatigue under 131 real operating mode, the fatigue data of spring 131 is closer to actual conditions.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of spring fatigue experimental device, it is characterised in that including fixed seat, orbital segment, spring component, fixation kit and pressure
Power test assembly；
The orbital segment is arranged at the fixed seat, and the spring component includes at least two springs, spring described in two of which
The both sides of the orbital segment are symmetricly set in, the two ends of the spring press on the orbital segment and the fixed seat, institute respectively
State spring and the fixed seat is fixed on by the fixation kit, the pressure test component includes being used to apply the orbital segment
Plus the pressure head of vertical direction active force.
2. spring fatigue experimental device according to claim 1, it is characterised in that the spring fatigue experimental device is also wrapped
Include protective cover and at least two salt fog injection spray pipes, the protective cover cover is buckled in the orbital segment, the spring and described fixed group
Part is outside and the protective cover is connected with the fixed seat, and the protective cover offers through hole, and the pressure head can lead to through described
Hole simultaneously acts on the orbital segment, and the salt fog injection spray pipe correspondence spring is set, and one end of the salt fog injection spray pipe is stretched into
In the protective cover and the salt fog injection spray pipe is used to import salt fog in the protective cover.
3. spring fatigue experimental device according to claim 2, it is characterised in that the spring fatigue experimental device is also wrapped
Salt fog generating assembly is included, the salt fog generating assembly is connected with the salt fog injection spray pipe and the salt fog generating assembly is used to provide
Salt atomizing.
4. spring fatigue experimental device according to claim 2, it is characterised in that the salt fog injection spray pipe points to the bullet
The bar and salt fog injection spray pipe is fixedly connected with the protective cover.
5. spring fatigue experimental device according to claim 2, it is characterised in that being located at for the salt fog injection spray pipe is described
One end in protective cover is provided with shower nozzle.
6. spring fatigue experimental device according to claim 2, it is characterised in that the spring fatigue experimental device is also wrapped
Include salt fog deposition detection components.
7. spring fatigue experimental device according to claim 2, it is characterised in that the protective cover is anticorrosive organic glass
Glass cover.
8. spring fatigue experimental device according to claim 2, it is characterised in that the protective cover and the fixed seat
Junction is provided with seal, and the seal is used to prevent salt fog from revealing.
9. spring fatigue experimental device according to claim 2, it is characterised in that the protective cover is provided with observation panel,
The observation panel with the observation door that the protective cover is rotatably connected by opening or closing.
10. a kind of spring fatigue test method, usage right requires the spring fatigue experimental device described in 1-9 any one, its
It is characterised by, the spring fatigue test method includes：
The orbital segment and the spring component are placed in enclosed environment, salt atomizing is carried out to the spring, meanwhile, use institute
The active force that pressure head applies vertical direction to the orbital segment is stated, external control system reads the fatigue test number of the spring
According to.
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