CN106323789B - A kind of load and measuring device of the deep simulation friction-wear test platform in full sea - Google Patents
A kind of load and measuring device of the deep simulation friction-wear test platform in full sea Download PDFInfo
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- CN106323789B CN106323789B CN201610933937.3A CN201610933937A CN106323789B CN 106323789 B CN106323789 B CN 106323789B CN 201610933937 A CN201610933937 A CN 201610933937A CN 106323789 B CN106323789 B CN 106323789B
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- piston rod
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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
- G01N3/56—Investigating resistance to wear or abrasion
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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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
Abstract
The invention discloses the test force loads and measuring device of a kind of complete deep simulation friction-wear test platform in sea, mainly include test force charging assembly and measurement component；Charging assembly loads cylinder by annular and realizes ipsilateral, different shaft type load, both can be reduced number of seals, while also ensuring the rigidity of drive shaft；Meanwhile drive shaft uses composite material, non-contacting sealing structure, eliminates the interference that contact sealing is transmitted moment of friction and measured.The measurement of loading force is changed into the piston rod displacement measurement outside autoclave by pilot strength measurement component, and the transmitting of loading force is relatively independent with measurement process, eliminates the interference that frictional force, moment of friction caused by high pressure sealing measure loading force.Therefore, the present invention can simulate on friction-wear test platform in Quan Haishen, realize moment of friction, accurate transfer of the loading force between autoclave body is inside and outside and accurate measurement, solve the tribological test problem under deep-marine-environment.
Description
Technical field
The invention belongs to friction-wear test platform design fields, and in particular to a kind of to simulate rubbing under super-pressure marine environment
The spring loads component of scouring damage testing stand.
Background technique
As land all kinds of resources are increasingly depleted, carry out the exploration of marine resources, exploits to improvement human survival and development
Environment has own strategic significance.2016, the Department of Science and Technology, China started the research work of Quan Haishen associated equipment.Because of ocean
Equipment, especially deep sea equipment are the bases of marine technology development, and deep-sea material is the basis of marine settings development.Mesh
Before, Partial key member, the friction pair of device directly work under harsh marine environment in deep sea equipment, such as the cunning of sea water pump
Boots/swash plate, plunger/plunger bushing, latent device buoyancy adjustment component, mooring cable etc., fretting wear, corrosion and its interaction of material
Seriously restrict the efficiency and reliability of deep sea equipment.Then, existing tribology theory not yet extends to deep-sea field, and people lack
The component of the weary tribological property to the new materials such as material, especially macromolecule, ceramics in the water environment of deep-sea, failure mechanism
Understanding.The secondary land design experiences of friction are difficult to be applicable in big depth conditions high pressure low temperature environment, inappropriate theory may cause
The failure of deep sea equipment critical movements pair, to reduce the reliability of deep sea equipment.
Therefore, synchronous to carry out friction-wear test and dynamic corrosion test, explore material rubbing under extreme marine environment
Abrasional behavior, rule and military service failure mechanism are wiped, from urgent demand, however report both at home and abroad at present is temporarily without related complete
The deep simulation friction test platform of research and full sea of extra large depth tribology.
Therefore, it is necessary to be badly in need of carrying out the development work of " the complete deep simulation friction test platform in sea ".Simulating ocean environment friction mill
It damages testing machine and seawater is compressed using high-pressure pump, Deep-sea high voltage is simulated in autoclave, test test specimen is placed in autoclave body, adds
Carry component, measurement component is located at outside autoclave body.Therefore, test force, loading force need the inside and outside accurate transfer of autoclave body with
Accurate measurement.However, superhigh pressure sealing of the moving component on autoclave is mostly to contact sealing, the axial direction that contact sealing generates is rubbed
It wipes power and moment of friction is difficult to reject from measurement data, directly affect the measurement accuracy of test force, loading force.How height is solved
Means of press seals and test force, loading force accurate transfer between contradiction, be the key that the design of deep-sea friction test platform.
Summary of the invention
The purpose of the present invention is to provide a kind of charging assemblies of complete deep simulation friction-wear test platform in sea, it is intended to solve examination
Test power, loading force transmitting and high pressure sealing between contradiction, realize test force and loading force it is accurate inside and outside autoclave body
Transmitting and accurate measurement.
To achieve the goals above, the present invention provides a kind of test force loads of complete deep simulation friction-wear test platform in sea
And measuring device, for applying test force to the test specimen in autoclave and being measured to the test force, comprising: test specimen adjustment
Seat, big bearing, straight pin, small bearing, stop sleeve, upper spring seat, axle sleeve, lower spring cup, measurement spring, drive shaft, spring
Compress measurement component；
Drive shaft upper axial is radially projecting to become an erecting bed；Test specimen adjusting seat is located above erecting bed, test specimen
There are axial spacings for the lower end surface of adjusting seat and the upper surface of erecting bed；Big bearing, small bearing are respectively positioned below erecting bed, small axis
Bearing sleeve is in the axis hole of big bearing；The moving-coil upper surface of big bearing and erecting bed lower end face contact, the moving-coil upper surface of small bearing
There are axial spacings between erecting bed lower end surface；
Straight pin has at least two, both pass through erecting bed and between erecting bed there are larger gap so that the two does not connect
Touching, and be circumferentially uniformly distributed along erecting bed；Straight pin upper end is inserted in test specimen adjusting seat lower end, matches with test specimen adjusting seat for interference
It closes, straight pin lower end is fixed on the moving-coil upper surface of small bearing；Between the upper surface and test specimen adjusting seat lower end surface of small bearing
Distance is greater than erecting bed thickness；
Upper spring seat, measurement spring, lower spring cup are sequentially arranged inside stop sleeve from top to bottom, two above and below measurement spring
End is abutted with upper spring seat and lower spring cup respectively；Aperture is equipped at the top of stop sleeve, upper spring seat upper surface is exposed in aperture
Place, the lower part of upper spring seat is supported at the top of sleeve and is limited in stop sleeve；
The circle of determining of big bearing is fixed on stop sleeve upper surface, the upper surface of small bearing determined circle and be fixed on upper spring seat,
Opening diameter at the top of stop sleeve is greater than the outer diameter of small bearing；
The shaft portion of drive shaft sequentially passes through small bearing, upper spring seat, measurement spring, lower spring cup, axis from top to bottom
Set, and there is gap, the shaft portion and axle sleeve of drive shaft between small bearing, upper spring seat, measurement spring, lower spring cup
Inner wall forms clearance seal, so that seawater leaks from clearance seal takes away the heat that friction generates；
Spring-compressed measurement component is used to measure decrement when spring is pressurized.
Further, spring-compressed measurement component includes micrometer nut, stress nut, piston rod, locking nut；Lower part
Part with accurate measurement screw thread is measurement screw rod, and measurement screw rod is threadedly coupled with micrometer nut by accurate measurement；Locking
Nut is covered outside piston rod and is coaxially disposed, and stress nut is connect with piston rod by regular screw threads；The upper surface of piston rod
It is connected on axle sleeve lower end surface, drive shaft passes through piston rod.
It further, further include fixing screws, adjustment ball, test specimen support；
Test specimen support is movably mounted to test specimen adjusting seat upper end by fixing screws, test specimen support and test specimen adjusting seat
The spherical groove for mounting and adjusting ball is offered on interface, mounting and adjusting ball is installed in spherical groove, and test specimen support can
Around the centre of sphere rotation of adjustment ball.
Further, further include sealing and radiating subassembly, sealing and radiating subassembly include: locking nut, the first O-ring,
Second O-ring, returning pipe joint, piston rod, J-shaped sealing ring；
On axle sleeve and piston rod, the upper surface of piston rod is connected on axle sleeve lower end surface locking screw mother set；First O-ring
It covers on the annular notch on J-type sealing ring top, J-type seal ring set is on axle sleeve and abuts locking nut upper surface；Locking screw
Female top is equipped with external screw thread and docks for carrying out installation with autoclave；Locking nut radially offers connection locking nut and piston
The water return outlet in gap, returning pipe joint are mounted on water return outlet between bar, the second seal with O ring of end face.
Further, be radially provided with through flow hole on piston rod, through flow hole is located above water return outlet, connection locking nut with
The gap between gap and piston rod and drive shaft between piston rod；
It is located at below water return outlet on piston rod inner cylinder face and is equipped with labyrinth seal ring between piston rod and drive shaft
Gap carries out axial seal；
Be located at below water return outlet between logical locking nut and piston rod and be equipped with third O-ring, locking nut and piston rod it
Between gap carry out dynamic sealing.
Further, drive shaft is the composite construction of stainless steel base surface coated with hard alloy, and axle sleeve is silicon nitride pottery
Ceramic material.
Further, the matrix of drive shaft is stainless steel 17-4PH, and drive shaft surface material is spraying or cladding in matrix
The ceramics or hard alloy on surface, axle sleeve are silicon nitride ceramic material.
Technical effect of the invention has:
1. pilot strength measurement component and charging assembly are relatively independent, and measure component and be changed into height for normal direction loading force is measured
The displacement for pressing kettle external pelivimetry piston rod eliminates the interference of the frictional force, moment of friction of high pressure sealing generation to measurement, to protect
Demonstrate,prove the precise measurement of loading force；
2. test specimen below is rotated and is moved axially simultaneously, and it is ipsilateral that Power Component is located at autoclave, but not altogether
With same drive shaft, elongated drive shaft is subjected only to driving moment；This ipsilateral, different axis driving structure is compared with conventional friction testing stand
Heteropleural driving structure had both reduced dynamic sealing quantity, while also ensuring the rigidity of drive shaft, its compressive deformation is avoided to connect with wall face
Touching is generated and is added, and influences loading force in the inside and outside accurate transfer of autoclave body and accurate measurement；
3. stress nut and measurement screw rod end face constitute stroke positioning, accurately guarantee amount of spring compression, to realize load
The accurate transfer of power and accurate measurement, stress nut are separated with measurement screw rod, preferably guarantee measurement accuracy；
4. drive shaft and autoclave is driven to form clearance seal by silicon nitride ceramics liner, add with conventional friction testing stand
It carries component to compare, there is no contact sealings；Avoid the measurement of the friction effects test force and loading force of high pressure sealing generation
Precision；Irregular abrasion of sealing element during assembly operating can also be excluded simultaneously leads to Fluctuation of Dynamic Friction, interferes loading force
Measurement；
5. rotating drive shaft uses composite structure, stainless steel base 17-4PH, drive shaft surface material is spraying
Or cladding makes drive shaft that can bear high torque in the ceramics or hard alloy of matrix surface, while having good tribology
Performance；
6. being mounted on the adaptive aligning component in rotation drive shaft, it can guarantee that upper and lower test specimen effectively contacts, and provide
Always perpendicular to the loading force of contact surface.
Detailed description of the invention
Attached drawing 1 is an application example schematic diagram of test force load and measuring device of the invention；
Attached drawing 2 is the schematic cross-sectional view of test force charging assembly and measurement component of the invention；
Attached drawing 3 is sealing of the invention, cooling component schematic cross-sectional view；
Attached drawing 4 is load cylinder piston rod schematic structural cross-sectional view of the invention；
Attached drawing 5 is spring-compressed measurement component schematic cross-sectional view of the invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
Attached drawing 1 is an application example schematic diagram of test force load of the invention and measuring device, complete in the example
Extra large deep simulation friction-wear test platform mainly includes autoclave 1.10, load and measuring device 1, radiating subassembly 2, amount of spring compression
Component 3, load cylinder 4 are measured, load cylinder 4 has piston rod 2.4.The friction-wear test platform is used to simulate deep-sea high-pressure environment,
It is synchronous to carry out material friction wear test and dynamic corrosion test.The main function of autoclave 1.10 is to provide test specimen and rubs
Deep-sea high-pressure environment needed for wear test, data acquisition components needed for high pressure dynamic corrosion test is provided.2 energy band of radiating subassembly
Overwhelming majority friction heat production is walked, guarantees that medium temperature meets practical abyssal temperature range in autoclave.Spring-compressed measurement group
Part 3 is changed into the displacement measured outside autoclave for normal force is measured, and excludes the interference of additional friction force.Loading cylinder 4 can basis
Test demand provides simultaneously normal direction loading force of the corrective action on test specimen working face.
Referring to figure 2., the test force load and measuring device of the deep simulation friction-wear test platform in full sea of the present embodiment, packet
It includes: test specimen adjusting seat 1.4, big bearing 1.5, straight pin 1.6, small bearing 1.7, stop sleeve 1.8, upper spring seat 1.9, axle sleeve
1.12, lower spring cup 1.13, measurement spring 1.14, drive shaft 1.15, spring-compressed measurement component.
1.15 upper axial of drive shaft is radially projecting to become an erecting bed 1.15.1；Test specimen adjusting seat 1.4 is located at peace
It fills above platform 1.15.1, there are axial spacings for the upper surface of the lower end surface of test specimen adjusting seat 1.4 and erecting bed 1.15.1；Big bearing
1.5, small bearing 1.7 is respectively positioned below erecting bed 1.15.1, and 1.7 sets of small bearing in the axis hole of big bearing 1.5；Big bearing 1.5
Moving-coil upper surface and the lower end erecting bed 1.15.1 face contact, the moving-coil upper surface of small bearing 1.7 and the lower end erecting bed 1.15.1
There are axial spacings between face.
Straight pin 1.6 has at least two, both passes through erecting bed 1.15.1 and there are larger between erecting bed 1.15.1
Gap is not so that the two contacts, and is circumferentially uniformly distributed along erecting bed 1.15.1；1.6 upper end of straight pin is inserted in test specimen adjusting seat 1.4
Lower end is interference fit with test specimen adjusting seat 1.4, and 1.6 lower end of straight pin is fixed on the moving-coil upper surface of small bearing 1.7；Small axis
The distance between 1.7 upper surface and 1.4 lower end surface of test specimen adjusting seat is held greater than erecting bed thickness.
Upper spring seat 1.9, measurement spring 1.14, lower spring cup 1.13 are sequentially arranged at from top to bottom inside stop sleeve 1.8,
Measurement 1.14 upper and lower ends of spring are abutted with upper spring seat 1.9 and lower spring cup 1.13 respectively；It is equipped with and opens at the top of stop sleeve 1.8
Hole, 1.9 upper surface of upper spring seat is exposed in tapping, and the top that the lower part of upper spring seat 1.9 is supported sleeve 1.8 is limited in branch
In support set cylinder 1.8.
The circle of determining of big bearing 1.5 is fixed on 1.8 upper surface of stop sleeve, and the circle of determining of small bearing 1.7 is fixed on upper spring seat
The opening diameter of 1.9 upper surface, 1.8 top of stop sleeve is greater than the outer diameter of small bearing 1.7.
The shaft portion of drive shaft 1.15 sequentially passes through small bearing 1.7, upper spring seat 1.9, measurement spring from top to bottom
1.14, lower spring cup 1.13, axle sleeve 1.12, and with small bearing 1.7, upper spring seat 1.9, measurement spring 1.14, lower spring cup
There is gap between 1.13, the shaft portion and 1.12 inner wall of axle sleeve of drive shaft 1.15 form clearance seal so that seawater from
The heat that friction generates is taken away in leakage at clearance seal.
Referring to figure 2., test specimen support 1.18 is movably mounted to 1.4 upper end of test specimen adjusting seat by fixing screws 1.16,
The spherical groove for mounting and adjusting ball 1.17 is offered on test specimen support 1.18 and the interface of test specimen adjusting seat 1.4, is installed
Adjustment ball 1.17 is installed in spherical groove, and test specimen support 1.18 can be around the centre of sphere rotation of adjustment ball 1.17.
Referring to figure 3., sealing and radiating subassembly include: locking nut 1.11, the first O-ring 2.1, the second O-ring
2.3.1, returning pipe joint 2.3, piston rod 2.4, J-shaped sealing ring 2.6.
1.11 sets of locking nut on axle sleeve 1.12 and piston rod 2.4, the upper surface of piston rod 2.4 is connected to axle sleeve 1.12
On lower end surface；First O-ring set 2.1 is on the annular notch on 2.6 top of J-type sealing ring, and 2.6 sets of J-type sealing ring in axle sleeve
On 1.12 and abut 1.11 upper surface of locking nut；1.11 top of locking nut is equipped with external screw thread for being installed with autoclave
Docking；The radial water return outlet for offering gap between connection locking nut 1.11 and piston rod 2.4 of locking nut 1.11, return pipe
Connector 2.3 is mounted on water return outlet, and end face is sealed with the second O-ring 2.3.1.
Referring to figure 4., through flow hole 2.4.1 is radially provided on piston rod 2.4, through flow hole 2.4.1 is located above water return outlet,
Gap between the gap being connected between locking nut 1.11 and piston rod 2.4 and piston rod and drive shaft.2.4 inner circle of piston rod
It is located at below water return outlet on cylinder axial close to the gap progress between piston rod and drive shaft equipped with labyrinth seal ring 2.4.2
Envelope.Be located at below water return outlet between logical locking nut 1.11 and piston rod 2.4 and be equipped with third O-ring 2.5, locking nut 1.11 with
Gap between piston rod 2.4 carries out dynamic sealing.
Referring to figure 5., spring-compressed measurement component 3 is used to measure decrement when spring is pressurized.Spring-compressed measures
Measuring component 3 includes micrometer nut 3.1, stress nut 3.2, piston rod 2.4, locking nut 1.11；Lower part has accurate measurement spiral shell
The part of line is measurement screw rod 1.11.1, and measurement screw rod 1.11.1 is threadedly coupled with micrometer nut 3.1 by accurate measurement；Locking
1.11 sets of nut outside piston rod 2.4 and coaxial arrangement, stress nut 3.2 are connect with piston rod 2.4 by regular screw threads；It is living
The upper surface of stopper rod 2.4 is connected on 1.12 lower end surface of axle sleeve, and drive shaft 1.15 passes through piston rod 2.4.
The principle of the present invention and effect is discussed in detail below against each attached drawing.
As shown in Figure 1, each device and component are installed on autoclave.
Such as Fig. 2, adaptive aligning component is by test specimen adjusting seat 1.4, test specimen support 1.18, epoxy resin cure part 1.1, examination
Part 1.2, polyformaldehyde straight pin 1.3, adjustment ball 1.17 form, wherein 1.1,1.2,1.3 composition test specimen components.Test specimen component and examination
Part support 1.18 is connected by straight pin interference.Test specimen support 1.18 can guarantee upper and lower around the centre of sphere rotation of adjustment ball 1.17
Test specimen comes into full contact with and provides the loading force perpendicular to working face.Straight pin 1.3 and test specimen adjusting seat 1.4 are interference fit, with
There are larger gap between drive shaft 1.15, with small bearing 1.7 by being welded to connect, small bearing 1.7 and test specimen adjusting seat 1.4 it
Between distance be greater than erecting bed thickness, which can guarantee that drive shaft axial flexibly mobile, is not subject to additional friction force.Small bearing
1.7 fixed circles are mounted on upper spring seat 1.9, and the circle of determining of big bearing 1.5 is mounted on stop sleeve 1.8 by interference fit.Axis
It covers inner cylinder face and drive shaft 1.15 forms clearance seal, the Seawater of gap location leakage is by radiating subassembly (shown in attached drawing 3
Component) lead back water tank.
When carrying out friction-wear test, loading force transmittance process is as follows: load cylinder provides thrust and pushes axle sleeve 1.12 past high
It is moved in pressure kettle, compressed spring 1.14, spring force passes to small bearing 1.7 by upper spring support 1.9, and thrust ball bearing is by axis
The test specimen adjusting seat 1.4 that rotation is acted on to power, eventually by adaptive aligning component by axial force be changed into always perpendicular to
The loading force of working face.Spring force is equal to loading force, and spring-compressed measurement component (its structure is as shown in Fig. 5) is located at high pressure
Outside autoclave body, loading force is obtained indirectly compared with measurement load cylinder pressure, the frictional force for eliminating high pressure sealing generation does measurement
It disturbs；Driving moment transmittance process is as follows: servo motor drives drive shaft 1.15 to rotate by shaft coupling, torque rotational speed meter etc., drives
Moving axis drives test specimen adjusting seat 1.4 to rotate by straight pin 1.6, and test specimen adjusting seat drives adaptive tune by fixing screws 1.16
The rotation of heart component is finally completed test specimen driving.Because there is gap between drive shaft 1.15 and axle sleeve 1.12 and straight pin 1.6,
It is not directly contacted with, therefore test specimen friction square is equal to driving moment, is equal to torque rotational speed meter institute measuring moment.High pressure sea water effect
In 1.15 end face of drive shaft, the axial force of generation successively passes through big bearing 1.5, stop sleeve 1.8 passes to autoclave 1.10, small
There is axial spacing always between the moving-coil end face and drive shaft 1.15 of bearing 1.7, is acted directly on compared with drive shaft 1.15 small
On bearing 1.7, spring rate is smaller, is conducive to improve loading force measurement accuracy.Elongated drive shaft 1.15 is only driven kinetic moment, no
By axial force, drive shaft 1.15 is directly driven compared with load cylinder, drive shaft stability is more preferable, will not be because of compressive deformation and other portions
Part contact generates additional.
Attached drawing 3 is sealing, cooling component, including drive shaft 1.15, the first O-ring 2.1, axle sleeve 1.12, the second O-ring
2.3.1, returning pipe joint 2.3, piston rod 2.4, third O-ring 2.5, J-shaped sealing ring 2.6, autoclave 1.10, locking nut
1.11.Drive shaft 1.15 and axle sleeve 1.12 are clearance seal, and drive shaft 1.15 uses composite structure, stainless steel base surface
Coated with hard alloy, axle sleeve 1.12 are made of silicon nitride ceramics, this makes this have good wearability to friction pair and rub
It wipes and learns performance, while drive shaft can bear larger driving moment.Drive shaft and the seawater of axle sleeve gap location leakage enter piston rod
Behind gap between 2.4 and drive shaft 1.15, realized by the labyrinth seal ring 2.4.2 on 2.4 inner cylinder face of piston rod axial
Sealing.Radial through-flow hole 2.4.1 is provided on piston rod 2.4, leakage water flows through through flow hole and enters piston rod 2.4 and locking nut
Dynamic sealing is completed by third O-ring 2.5 in gap between 1.11, locking nut lower end, and leakage water connects eventually by return pipe
First 2.3 lead back water tank.Cycle water energy takes away overwhelming majority friction heat production, and assembly radiating is good, and medium temperature meets in autoclave
Practical deep-marine-environment temperature range.
Attached drawing 5 is spring-compressed measurement component, and spring-compressed measurement component includes drive shaft 1.15, micrometer nut
3.1, stress nut 3.2, piston rod 2.4, measurement (1.11 lower part of the locking nut position as shown in label 1.11.1 screw rod 1.11.1
Set), load cylinder 4；Measurement screw rod 1.11.1 is threadedly coupled with micrometer nut 3.1 by accurate measurement, measurement accuracy such as Fig. 5 institute
Show, be the principle for having borrowed screw micrometer, the lower part of locking nut 1.11 is directly made into measurement screw rod 1.11.1 as master
Ruler will be used as vernier with micrometer nut 3.1, and directly accurately can intuitively be arranged and read the decrement of compressed spring.Stress
Nut 3.2 is connect with piston rod 2.4 by regular screw threads.
When needing to provide normal direction loading force to test specimen, the decrement of the present embodiment 2000N, corresponding spring 1.14 are
20mm.Stress nut 3.2 is unclamped first, turn micrometer nut 3.1 makes it be displaced outwardly 20mm, stress nut 3.2 is rotated at this time,
It contacts it with 3.1 end face of micrometer nut, then rotates backward micrometer nut 3.1 and cause it to move to least significant end, start-up loading cylinder 4
Stretch out piston rod 2.4, until stress nut 3.2 and the measurement end face screw rod 1.11.1 contact position, spring 1.14 is mentioned at this time
The loading force of confession is 2000N.That is stress nut and measurement screw rod constitutes stroke positioning, thus guarantee amount of spring compression, the survey
Stress nut 3.2 is separated with measurement screw rod 3.1 in amount component, and effective protection measures the measurement accuracy of screw rod.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (7)
1. a kind of the test force load and measuring device of the deep simulation friction-wear test platform in full sea, for the test specimen in autoclave
Apply and test force and the test force is measured characterized by comprising is test specimen adjusting seat, big bearing, straight pin, small
Bearing, stop sleeve, upper spring seat, axle sleeve, lower spring cup, measurement spring, drive shaft, spring-compressed measurement component；
Drive shaft upper axial is radially projecting to become an erecting bed；Test specimen adjusting seat is located above erecting bed, test specimen adjustment
There are axial spacings for the lower end surface and the upper surface of erecting bed of seat；Big bearing, small bearing are respectively positioned below erecting bed, small bearing holder (housing, cover)
In the axis hole of big bearing；The moving-coil upper surface of big bearing and erecting bed lower end face contact, the moving-coil upper surface of small bearing and peace
There are axial spacings between dress platform lower end surface；
Straight pin has at least two, both pass through erecting bed and between erecting bed there are larger gap so that the two does not contact, and
It is circumferentially uniformly distributed along erecting bed；Straight pin upper end is inserted in test specimen adjusting seat lower end, is interference fit, cylinder with test specimen adjusting seat
Pin lower end is fixed on the moving-coil upper surface of small bearing；The distance between the upper surface of small bearing and test specimen adjusting seat lower end surface are greater than
Erecting bed thickness；
Upper spring seat, measurement spring, lower spring cup are sequentially arranged inside stop sleeve from top to bottom, measurement spring upper and lower ends point
It is not abutted with upper spring seat and lower spring cup；It is equipped with aperture at the top of stop sleeve, upper spring seat upper surface is exposed in tapping, on
The lower part of spring base is supported at the top of sleeve and is limited in stop sleeve；
The circle of determining of big bearing is fixed on stop sleeve upper surface, the upper surface of small bearing determined circle and be fixed on upper spring seat, support
Opening diameter at the top of sleeve is greater than the outer diameter of small bearing；
The shaft portion of drive shaft sequentially passes through small bearing, upper spring seat, measurement spring, lower spring cup, axle sleeve from top to bottom, and
There is gap, the shaft portion and sleeve lining of drive shaft between small bearing, upper spring seat, measurement spring, lower spring cup
Clearance seal is formed, so that seawater leaks from clearance seal takes away the heat that friction generates；
Spring-compressed measurement component is used to measure decrement when spring is pressurized.
2. the test force load and measuring device of a kind of complete deep simulation friction-wear test platform in sea as described in claim 1,
It is characterized in that, spring-compressed measurement component includes micrometer nut, stress nut, piston rod, locking nut；Locking nut lower part
To measure screw rod, measurement screw rod has accurate measurement screw thread, and measurement screw rod is threadedly coupled with micrometer nut by accurate measurement；Lock
Tight nut is covered outside piston rod and is coaxially disposed, and stress nut is connect with piston rod by regular screw threads；The upper end of piston rod
Face is connected on axle sleeve lower end surface, and drive shaft passes through piston rod.
3. the test force load and measuring device of a kind of complete deep simulation friction-wear test platform in sea as described in claim 1,
It is characterized in that, further includes fixing screws, adjustment ball, test specimen support；
Test specimen support is movably mounted to test specimen adjusting seat upper end, the docking of test specimen support and test specimen adjusting seat by fixing screws
The spherical groove for mounting and adjusting ball is offered on face, adjustment ball is installed in spherical groove, and test specimen support can be around adjustment
The centre of sphere of ball rotates.
4. a kind of test force load of complete deep simulation friction-wear test platform in sea as described in claims 1 to 3 any one and
Measuring device, which is characterized in that further include sealing and radiating subassembly, sealing and radiating subassembly include: locking nut, the first O shape
Circle, the second O-ring, returning pipe joint, piston rod, J-shaped sealing ring；
On axle sleeve and piston rod, the upper surface of piston rod is connected on axle sleeve lower end surface locking screw mother set；First O-ring covers
On the annular notch on J-type sealing ring top, J-type seal ring set is on axle sleeve and abuts locking nut upper surface；On locking nut
Portion is equipped with external screw thread and docks for carrying out installation with autoclave；Locking nut radially offer connection locking nut and piston rod it
Between gap water return outlet, returning pipe joint is mounted on water return outlet, the second seal with O ring of end face；
Sealing and radiating subassembly and spring-compressed measurement component share locking nut and piston rod.
5. the test force load and measuring device of a kind of complete deep simulation friction-wear test platform in sea as claimed in claim 4,
Be characterized in that, be radially provided with through flow hole on piston rod, through flow hole is located above water return outlet, connection locking nut and piston rod it
Between gap and piston rod and drive shaft between gap；
On piston rod inner cylinder face be located at water return outlet below be equipped with labyrinth seal ring to the gap between piston rod and drive shaft into
Row axial seal；
Third O-ring is set between locking nut and piston rod, and is located at below water return outlet, between locking nut and piston rod
The sealing means in gap are dynamic sealing.
6. the test force load and measuring device of a kind of complete deep simulation friction-wear test platform in sea as claimed in claim 4,
It is characterized in that, drive shaft is the composite construction of stainless steel base surface coated with hard alloy, and axle sleeve is silicon nitride ceramic material.
7. the test force load and measuring device of a kind of complete deep simulation friction-wear test platform in sea as claimed in claim 4,
It is characterized in that, the matrix of drive shaft is stainless steel 17-4PH, and drive shaft surface material is spraying or cladding in the pottery of matrix surface
Porcelain or hard alloy, axle sleeve are silicon nitride ceramic material.
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| CN109966991A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | Accurate device for measuring force in a kind of autoclave |
| CN108593536A (en) * | 2018-04-22 | 2018-09-28 | 北京工业大学 | A kind of dynamic electric Chemical cover experimental rig |
| CN109374402B (en) * | 2018-12-19 | 2023-09-05 | 中国航空综合技术研究所 | Bellows tension and compression test device and test method |
| CN110426302B (en) * | 2019-06-28 | 2022-05-13 | 武汉船用机械有限责任公司 | Friction-wear test tool |
| CN114563295B (en) * | 2022-03-07 | 2023-08-22 | 湖南科技大学 | Friction and abrasion test bed for simulating seabed high-pressure muddy environment containing sediment |
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| CN104280232A (en) * | 2014-10-16 | 2015-01-14 | 中国海洋大学 | High-back-pressure seawater hydraulic frictional wear test bed |
| CN104330223A (en) * | 2014-11-26 | 2015-02-04 | 南京林业大学 | Mechanical sealing property testing device and method for measuring axial force and temperature of sealed end surfaces |
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