CN102866075A - Soft friction simulation test device - Google Patents
Soft friction simulation test device Download PDFInfo
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- CN102866075A CN102866075A CN2012103222279A CN201210322227A CN102866075A CN 102866075 A CN102866075 A CN 102866075A CN 2012103222279 A CN2012103222279 A CN 2012103222279A CN 201210322227 A CN201210322227 A CN 201210322227A CN 102866075 A CN102866075 A CN 102866075A
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Abstract
The invention discloses a soft friction simulation test device. The soft friction simulation test device comprises a substrate, a lower test sample assembly and an upper test sample assembly, wherein the lower test sample assembly is arranged on the substrate and comprises a linear guide rail and a lower test sample platform; the linear guide rail is fixedly connected at the upper end of the substrate; the lower test sample platform is connected with an unsteady-state driving mechanism and can be horizontally and movably connected to the linear guide rail through the unsteady-state driving mechanism; and the upper test sample assembly comprises an upper test sample clamp which is connected with an unsteady-state loading mechanism and can be axially and movably arranged above the low test sample assembly through the unsteady-state driving mechanism. By adopting the soft friction simulation test device disclosed by the invention, the on-site practical situation in the laying process of a tensioner and pipelines for pipe-laying ship in the field of petroleum and gas can be simulated, so that the friction performance test between the tensioner and the pipeline can be conducted. The soft friction simulation test device is simple in structure, easy to produce, convenient to assemble and disassemble and is durable.
Description
Technical field
The present invention is relevant for a kind of instrument of modeling test, especially relevant for a kind of tensioner for pipe-laying ship pipeline laying process Elastic material for simulation petroleum gas field and the soft tribological modeling test unit of the friction process between rigid material or resilient material and the resilient material.
Background technology
Global Oil output more than 1/3 from the ocean, China has more than 300 ten thousand square kilometres of marine sites, the marine oil and gas stock number accounts for 1/4 of hydrocarbon resources total amount.In recent years, Chinese Sea oil, the construction of natural gas fields constantly made further progress, and oil and gas production increases year by year.The main tube of the petroleum gas that offshore production goes out road is carried, and submarine pipeline becomes the important component part that deep water hydrocarbon field Development Engineering is built, and the effect of submarine pipeline laying technology in oil-gas gathering and transportation is more and more important.Because the applicability of pipelaying barge is strong, and construction technology is very ripe, be present most popular a kind of submarine pipeline laying method in the world, obtained greatly developing in recent years.In the pipe laying process of deep underwater pipes, pipeline has one section long unsettled section from the hull to the seabed, be subjected to the impact of the factors such as sea wind, wave to go up sagging swinging owing to pipelaying barge, the distance of pipeline between from the deck to the seabed constantly changes, this just so that the length of unsettled pipeline section and pipeline stress also along with variation.If pipeline is fixed aboard ship, when ship rises, pipeline will bear very large pulling force, and this pulling force may make pipeline surpass stress limit, causes the accident that drags of anchor of pipeline break or pipelaying barge; When ship descends or with the unconfined placement of pipeline aboard ship, pipeline is subjected to the effect of self gravitation and wave current power, will bear very macrobending stress, this stress will be above the yield limit of piping material, thereby makes pipeline generation plastic yield.For addressing this problem, pipelaying barge is provided with a special device---stretcher, is in all the time the external tension state that is subjected to when guaranteeing that pipeline is laid, the permanent tension force control that the friction force by stretcher and pipeline enclosure can realize pipeline with lay.Therefore, stretcher pipe laying process is not a steady-state process but a transient.
Stretcher pipe laying process is a challenge, not only will lay the pipelines such as double-layer pipe, individual layer concrete weight coating pipeline, umbilical cables, also will overcome the impact of the sea situation factors such as wave non-steady state loading, ocean current and sea ice.Double-layer pipe, individual layer concrete weight coating pipeline belong to the hard pipeline, and umbilical cables belongs to soft pipeline.Because it is to be made by nonmetallic resilient material that stretcher and pipeline produce the crawler belt cushion block of friction, therefore stretcher pipe laying process comprises dissimilar soft contact (comprising soft/hard and soft/soft dual mode), is the genuine soft friction process that occurs under the complex environment.And for example localization Design and the manufacturing of stretcher of deep water pipe-laying equipment is in conceptual phase temporarily, but the soft tribology theory research of the unstable state of details has determined the success or failure of the deep water pipe-laying equipments such as China's independent development stretcher.Therefore, tackle soft friction test and carry out systematic research.In addition, because working environment is complicated, stretcher pipe laying process is a transient, and this has more increased the difficulty of soft friction test.
Existing reciprocating type friction test instrument, the MFT-R4000 reciprocating friction Wear Tester on the market for example, and for example the 14FW reciprocating friction test unit on the market, HSR-2M type back and forth/ring piece frictional wear test device, the friction test device that all belongs to stable state all can't be simulated working environment complicated in the stretcher pipe laying process.
Therefore, be necessary to provide a kind of new soft tribological modeling test unit, overcome defects.
Summary of the invention
The purpose of this invention is to provide a kind of soft tribological modeling test unit, this device can be simulated the on-site actual situations in the petroleum gas field tensioner for pipe-laying ship pipeline laying process, to carry out the frictional behaviour experimental study between stretcher and the pipeline, it is simple in structure, making is easy, easy accessibility and durable in use.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize:
The invention provides a kind of soft tribological modeling test unit, described soft tribological modeling test unit comprises:
Pedestal;
Lower sample assembly, it is arranged on the described pedestal, described lower sample assembly comprises line slideway and lower specimen sample platform, described line slideway is fixedly connected on the upper end of described pedestal, described lower specimen sample platform links to each other with a unstable state driving mechanism, and described lower specimen sample platform can be connected on the described line slideway by described unstable state driving mechanism with moving horizontally;
Upper sample assembly, it comprises specimen holder, and described upper specimen holder links to each other with a unstable state load maintainer, and described upper specimen holder can be arranged on the top of described lower sample assembly with moving axially by described unstable state load maintainer.
In preferred embodiment, the two ends of described line slideway are connected with respectively left block and right block, and the side relative with described right block at described left block is respectively equipped with travel switch, and described two travel switches are electrically connected with described unstable state driving mechanism.
In preferred embodiment, described lower sample assembly also comprises the straight line slide, described straight line slide is fixedly connected on the lower end of described lower specimen sample platform, and be connected to slidably on the described line slideway, according to the horizontal reciprocating movement of described straight line slide, the two ends of described straight line slide contact with described two travel switches respectively or separate.
In preferred embodiment, described unstable state load maintainer comprises:
Shell, its upper end links to each other with a straight line stepper motor;
Actuating strut, it can be located in the described shell with moving axially, and the upper end of described actuating strut is connected with screw, and described screw links to each other with described linear stepping motor, and the lower end of described actuating strut passes described shell and links to each other with described upper specimen holder.
In preferred embodiment, between described actuating strut and described screw, be provided with pressure transducer, described pressure transducer is electrically connected with described linear stepping motor, and the outside of described actuating strut is arranged with pressure spring.
In preferred embodiment, the lower end of described upper specimen holder is folded with sample, the upper end of described lower specimen sample platform is provided with sample cell, the bottom of described sample cell is provided with a plurality of projections, offer a plurality of grooves once on the sample, described lower sample is set on described a plurality of projection by its a plurality of grooves and is connected in the described sample cell.
In preferred embodiment, the upper surface of described lower sample is lower than the notch of described sample cell.
In preferred embodiment, described upper sample and described lower sample are made by nonmetallic materials or metal material respectively, and the hardness number of described lower sample is 25～85HRC, and the hardness number of described upper sample is than the large 10～15HRC of hardness number of described lower sample.
In preferred embodiment, be fixedly connected with bracing frame on the described pedestal, support frame as described above comprises horizontal stand bar and the vertical rack bar that is connected, and described unstable state load maintainer is connected on the described horizontal stand bar, and the lower end of described vertical rack bar is fixedly connected on the described pedestal.
In preferred embodiment, described unstable state driving mechanism is linear electric motors, and described linear electric motors comprise U-shaped slot type linear motor stator electric and U-shaped slot type linear motor rotor, and described U-shaped slot type linear motor rotor links to each other with described lower specimen sample platform.
Characteristics and the advantage of soft tribological modeling test unit of the present invention are: be used for the friction process between simulation tensioner for pipe-laying ship pipeline laying process stretcher and the pipeline, when carrying out soft tribological modeling test, at first, sample under lower specimen sample platform is placed, upper sample holder is located at the lower end of specimen holder, then manually add clear water in lower specimen sample and upper specimen sample contact region, the aqueous solution that potential of hydrogen is different, the media such as small solid particle of simulated seawater solution or simulation pressed powder dirt, at this moment, starting the unstable state load maintainer moves downward to drive upper specimen holder, upper specimen holder drives upper sample and is resisted against on the lower sample, provides preliminary work for carrying out soft tribological modeling test.The present invention controls movement velocity, acceleration of motion and the motion frequency of lower specimen sample platform by the unstable state driving mechanism, so that lower specimen sample platform is done the motion of unstable state reciprocating horizontal at line slideway; And, by the unstable state load maintainer loaded load that the upper sample that is folded on the upper specimen holder is applied on the lower sample is controlled, the loaded load that sample is applied on the lower sample can be simulated extra large pipe from unstable state loaded load such as heavy load, storm load and/or seaway loads.Soft tribological modeling test unit of the present invention, but the wave non-steady state loading of Reality simulation seabed real-time change, the sea situation such as ocean current and seawater factor, it can simulate tensioner for pipe-laying ship friction process between stretcher and the pipeline in the pipeline laying process more really, also can simulate simultaneously tensioner for pipe-laying ship stretcher and tube contacts district in the pipeline laying process has the different sea water solution of clear water or potential of hydrogen or pressed powder dirt etc. truly to lubricate environment, its test figure is strong with reference to property, for the quality and reliability that improves petroleum gas process deep water pipe laying tensioner equipment and the effect of stretcher operation provide foundation.In addition, the present invention is simple in structure, making is easy, easy accessibility and durable in use.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the stereographic map of soft tribological modeling test unit of the present invention.
Fig. 2 is the decomposing schematic representation of the lower sample assembly of soft tribological modeling test unit of the present invention.
Fig. 3 is the structural representation of the upper sample assembly of soft tribological modeling test unit of the present invention.
Fig. 4 is the control principle block diagram of the unstable state driving mechanisms control assembly of soft tribological modeling test unit of the present invention.
Fig. 5 is the control principle block diagram of the unstable state load maintainer Control Component of soft tribological modeling test unit of the present invention.
The component symbol explanation:
1 ... pedestal 11 ... the testing machine cabinet
12 ... testing machine control panel 13 ... optical flat
2 ... lower sample assembly 21 ... line slideway
211 ... buckle slot 22 ... lower specimen sample platform
221 ... sample cell 222 ... projection
223 ... lower sample 224 ... groove
23 ... left block 231 ... travel switch
24 ... right block 241 ... travel switch
25 ... straight line slide 251 ... chute
252 ... buckle fin 26 ... the sample stage web member
261 ... level connection joint section 262 ... vertical connecting portion
3 ... upper sample assembly 31 ... upper specimen holder
311 ... upper sample 312 ... container cavity
316 ... feather key 32 ... holding screw
33 ... attachment screw 34 ... the load maintainer web member
4 ... unstable state driving mechanism 41 ... U-shaped slot type linear motor stator electric
42 ... U-shaped slot type linear motor rotor 5 ... the unstable state load maintainer
51 ... shell 511 ... upper container cavity
512 ... lower container cavity 513 ... gathering sill
52 ... actuating strut 521 ... disk
53 ... linear stepping motor 531 ... drive link
54 ... screw 541 ... tapped through hole
55 ... pressure transducer 56 ... pressure spring
57 ... connecting stud 6 ... bracing frame
61 ... horizontal stand bar 62 ... the vertical rack bar
63 ... web member
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
As shown in Figure 1, the invention provides a kind of soft tribological modeling test unit, it comprises pedestal 1, lower sample assembly 2 and upper sample assembly 3.Wherein: lower sample assembly 2 is arranged on the described pedestal 1, described lower sample assembly 2 comprises line slideway 21 and lower specimen sample platform 22, described line slideway 21 is fixedly connected on the upper end of described pedestal 1, described lower specimen sample platform 22 links to each other with a unstable state driving mechanism 4, and described lower specimen sample platform 22 can be connected on the described line slideway 21 by described unstable state driving mechanism 4 with moving horizontally; Upper sample assembly 3 comprises specimen holder 31, and described upper specimen holder 31 links to each other with a unstable state load maintainer 5, and described upper specimen holder 31 can be arranged on the top of described lower sample assembly 2 with moving axially by described unstable state load maintainer 5.
Specifically, pedestal 1 comprises testing machine cabinet 11, and testing machine cabinet 11 is provided with testing machine control panel 12, and optical flat 13 is installed on the upper surface of testing machine cabinet 11.Testing machine control panel 12 is electrically connected with unstable state driving mechanism 4 and unstable state load maintainer 5 respectively, with the working condition by these testing machine control panel 12 control unstable state driving mechanisms 4 and unstable state load maintainer 5; The surface of optical flat 13 is cutd open light through precision and is processed, and it provides the reference for installation surface for upper sample assembly 3 and the lower sample assembly 2 that is installed in pedestal 1.
The line slideway 21 of lower sample assembly 2 is fixed on the optical flat 13 of pedestal 1, unstable state driving mechanism 4 is positioned at a side of line slideway 21, it also is fixed on the optical flat 13, lower specimen sample platform 22 is connected to the upper end of line slideway 21, under the driving of unstable state driving mechanism 4, lower specimen sample platform 22 can carry out the motion of unstable state reciprocating horizontal at line slideway 21.In the present invention, this unstable state reciprocating horizontal motion is to make lower specimen sample platform 22 carry out horizontal reciprocating with different movement velocitys, acceleration and motion frequency at line slideway 21 under the drive of unstable state driving mechanism 4 to move.In the present embodiment, see also shown in Figure 4, unstable state driving mechanism 4 is to control by unstable state driving mechanisms control assembly, this unstable state driving mechanisms control assembly comprises testing machine control panel 12, industrial computer and the data collecting card that is arranged on the testing machine cabinet 11, by different movement velocity, acceleration of motion and the motion frequencies of input on testing machine control panel 12, make industrial computer control unstable state driving mechanism 4 realize the unstable state rectilinear motion, and then specimen sample platform 22 carry out the unstable state traveling priority at line slideway 21 under driving.
The upper specimen holder 31 of upper sample assembly 3 is positioned at the top of lower specimen sample platform 22, unstable state load maintainer 5 is connected to the upper end of specimen holder 31, under the driving of unstable state load maintainer 5, but upper specimen holder 31 in the vertical directions carry out the reciprocating type axially-movable of unstable state.In the present invention, the reciprocating type axially-movable of this unstable state is the upper sample that makes 31 sandwicheds of specimen holder, under the drive of unstable state load maintainer 5, act on the lower sample on the lower specimen sample platform 22 with different loaded load and to load lower sample is carried out unstable state, the load that this unstable state loads can be that sea pipe deadweight is load simulated, storm load simulation and/or seaway load simulation.In the present embodiment, see also shown in Figure 5, unstable state load maintainer 5 is to control by unstable state load maintainer Control Component, this unstable state load maintainer Control Component comprises the testing machine control panel 12 that is arranged on the testing machine cabinet 11, industrial computer and data collecting card, by the different simulation load of input on testing machine control panel 12, make industrial computer control unstable state load maintainer 5 realize that upper sample loads the unstable state of lower sample, wherein, sea pipe deadweight is load simulated to refer to input sea pipe deadweight, and the extra large pipe in the simulation stretcher pipe laying course of work is from the impact of heavy load; Storm load carries simulation and refers to input stormy waves speed, the impact of the storm load in the simulation stretcher pipe laying course of work; The load simulated incoming wave Flow Velocity that refers to of wave current, the impact of the wave current load in the simulation stretcher pipe laying course of work.
Soft tribological modeling test unit of the present invention is used for the friction process between simulation tensioner for pipe-laying ship pipeline laying process stretcher and the pipeline.When carrying out soft tribological modeling test, at first, sample under lower specimen sample platform 22 is placed, upper sample holder is located at the lower end of specimen holder 31, then manually add the media such as small solid particle of clear water, aqueous solution that potential of hydrogen is different, simulated seawater solution or simulation pressed powder dirt in lower specimen sample and upper specimen sample contact region, at this moment, starting unstable state load maintainer 5 moves downward to drive upper specimen holder 31, upper specimen holder 31 drives upper sample and is resisted against on the lower sample, provides preliminary work for carrying out soft tribological modeling test.
The present invention controls by movement velocity, acceleration of motion and the motion frequency of 4 pairs of lower specimen sample platforms 22 of unstable state driving mechanism, so that lower specimen sample platform 22 is done the motion of unstable state reciprocating horizontal at line slideway 21, and by the relative motion state between unstable state driving mechanisms control assembly and the real-time upper sample of easily change of unstable state load maintainer Control Component and lower sample and the contact load between upper sample and lower sample, by changing various parameters, carry out the tribological modeling test under the different condition; And, be folded in the loaded load that the upper sample on the upper specimen holder 31 is applied on the lower sample by 5 pairs of unstable state load maintainers and control, the loaded load that sample is applied on the lower sample can be simulated extra large pipe from unstable state loaded load such as heavy load, storm load and/or seaway loads.Soft tribological modeling test unit of the present invention, but the wave non-steady state loading of Reality simulation seabed real-time change, the sea situation such as ocean current and seawater factor, it can simulate tensioner for pipe-laying ship friction process between stretcher and the pipeline in the pipeline laying process more really, also can simulate simultaneously tensioner for pipe-laying ship stretcher and tube contacts district in the pipeline laying process has the different sea water solution of clear water or potential of hydrogen or pressed powder dirt etc. truly to lubricate environment, its test figure is strong with reference to property, for the quality and reliability that improves petroleum gas process deep water pipe laying tensioner equipment and the effect of stretcher operation provide foundation.In addition, the present invention is simple in structure, making is easy, easy accessibility and durable in use.
According to an embodiment of the invention, please cooperate consult shown in Figure 2, the two ends of described line slideway 21 are connected with respectively left block 23 and right block 24, be respectively equipped with travel switch 231 and travel switch 241 in described left block 23 and described right block 24 relative sides, described travel switch 231 and travel switch 241 are electrically connected with described unstable state driving mechanism 4 respectively.
Further, described lower sample assembly 2 also comprises straight line slide 25, described straight line slide 25 is fixedly connected on the lower end of described lower specimen sample platform 22, and be connected to slidably on the described line slideway 21, according to the horizontal reciprocating movement of described straight line slide 25, the two ends of described straight line slide 25 contact with described travel switch 231, travel switch 241 respectively or separate.
Specifically, the upper end of straight line slide 25 is fixedly connected on the lower end of lower specimen sample platform 22, and the lower end of straight line slide 25 is provided with chute 251, is respectively equipped with a buckle fin 252 on the opposite face of the two opposite side walls of chute 251; The both sides of line slideway 21 are respectively equipped with buckle slot 211, and straight line slide 25 is fastened in the buckle slot 211 with its buckle fin 252 and slidably is connected on the line slideway 21.The design of buckle fin 252 of the present invention and buckle slot 211 can make straight line slide 25 more smooth and easy horizontally slidingly on line slideway 21, and can prevent that straight line slide 25 breaks away from the situation generation of line slideway 21 in the process of sliding.
Be connected to left block 23 and the right block 24 at line slideway 21 two ends, in order to the sliding scale of straight limit slide 25 on line slideway 21.Please cooperate consult shown in Figure 4, when the travel switch 231 on straight line slide 25 and the left block 23 or the travel switch 241 on the right block 24 contact, travel switch 231 or travel switch 241 produce a control signal, the data collecting card of unstable state driving mechanisms control assembly receives this control signal, the control signal control unstable state driving mechanism 4 that the industrial computer of unstable state driving mechanisms control assembly receives by this data collecting card, make unstable state driving mechanism 4 drive straight line slide 25 mobile in the opposite direction, the function that travel switch 231 and travel switch 241 not only can provide straight line slide 25 to reciprocatingly slide at line slideway 21, it can prevent that also the motion of straight line slide 25 from exceeding scope of design and have an accident.
According to an embodiment of the invention, please cooperate and consult shown in Figure 3ly, described unstable state load maintainer 5 comprises shell 51 and actuating strut 52, wherein: the upper end of shell 51 links to each other with a straight line stepper motor 53; Actuating strut 52 can be located in the described shell 51 with moving axially, the upper end of described actuating strut 52 is connected with screw 54, described screw 54 links to each other with described linear stepping motor 53, and the lower end of described actuating strut 52 passes described shell 51 and links to each other with described upper specimen holder 31.
Further, be provided with pressure transducer 55 between described actuating strut 52 and described screw 54, described pressure transducer 55 is electrically connected with described linear stepping motor 53, and the outside of described actuating strut 52 is arranged with pressure spring 56.
Specifically, shell 51 is hollow body structures, and it has upper container cavity 511 and the lower container cavity 512 that is connected, and the internal diameter of upper container cavity 511 is greater than the internal diameter of lower container cavity 512; Actuating strut 52 is arranged in the lower container cavity 512 of shell 51, disk 521 has extended radially outwardly on it, the periphery wall of disk 521 can contact cooperation axially slidably with lower container cavity 512 all sidewalls of shell, and the lower end of actuating strut 52 passes the bottom of shell 51 and is connected to the upper end of upper specimen holder 31 by attachment screw 33; Be installed in the feather key 316 of shell 51 bottoms and can contact axially slidably cooperation with gathering sill on the actuating strut 52; Pressure transducer 55 is connected on the disk 521 of actuating strut 52 upper ends by connecting stud 57.
Unstable state load maintainer 5 of the present invention, the drive link 531 of its linear stepping motor 53, screw 54, the connecting stud 57 of Bonding pressure sensor 55 and actuating strut 52, and the revolving shaft of actuating strut 52 is to conllinear, so that the drive link 531 of linear stepping motor 53 is by up stroke and the down stroke of forward and reverse control screw 54, screw 54 passes motion to pressure transducer 55 and actuating strut 52, the upper specimen holder 31 that actuating strut 52 drives upper sample assembly 3 axially moves up and down, make the upper sample that is folded on the specimen holder 31 carry out the unstable state loading to the lower sample that is fixed on the lower specimen sample platform 22, and the reacting force that lower sample is subject to can pass to specimen holder 31, and is applied on the pressure transducer 55 by the force of compression of the pressure spring 56 of actuating strut 52 on being set in actuating strut 52.The pressure spring 56 that is set on the actuating strut 52 is used for regulating upper sample to the loading force size of lower sample and the stroke of upper sample, and provides buffer protection to whole unstable state load maintainer 5.
In the present invention, upper sample can draw by following mechanics calculating formulae the actual loaded power of lower sample:
F=F
1-kS
Wherein, F is the loading force of unstable state load maintainer 5;
F
1The power that records for pressure transducer 55;
S is the displacement of screw 54, also is the elastic deformation amount of pressure spring 56 simultaneously; The numerical values recited of S can directly obtain or the rotary encoder calculating passed through in the linear stepping motor 53 gets by linear stepping motor 53;
K is the elasticity coefficient of pressure spring 56.
Whole unstable state load maintainer 5 adopts loop control theory, the feedback signal of unstable state load maintainer 5 derives from pressure transducer 55, please cooperate consult shown in Figure 5, pressure transducer 55 is directly passed to the force value that records the data collecting card of unstable state load maintainer Control Component by the digital-to-analogue conversion module, the industrial computer of unstable state load maintainer Control Component is adjusted the drive link 531 of linear stepping motor 53 by the data that this data collecting card receives, and then the stroke variation of control screw 54, readjust force value.
According to an embodiment of the invention, see also shown in Fig. 2,3, the lower end of described upper specimen holder 31 is folded with sample 311, described lower specimen sample platform 22 is provided with sample cell 221, the bottom of described sample cell 221 is provided with a plurality of projections 222, offer a plurality of grooves 224 once on the sample 223, described lower sample 223 is set on described a plurality of projection 222 by its a plurality of grooves 224 and is connected in the described sample cell 221.
Specifically, the lower end of upper specimen holder 31 is provided with container cavity 312, and upper sample 311 is installed with in this container cavity 312, and is fixed on the upper specimen holder 31 by holding screw 32.
In the present invention, be provided with two in the sample cell 221 of lower specimen sample platform 22 and be the projection 222 that the diagonal angle arranges, also be provided with two on the lower surface of lower sample 223 and be the groove 224 that the diagonal angle arranges, two grooves 224 match with two projections 222, so that lower sample 223 is fixed on the lower specimen sample platform 22.The design of groove 224 and projection 222 can make lower sample 223 be fixed on firmly, reliably on the lower specimen sample platform 22.In other embodiment, the quantity that is opened in the groove 224 on lower sample 223 lower surfaces can be selected arbitrarily with the quantity that is convexly equipped with at the projection 222 of sample cell 221 bottoms of lower specimen sample platform 22, as long as can make lower sample 223 strong fixs in sample cell 221, not be restricted at this.
Soft tribological modeling test unit of the present invention can be realized the purpose of quick-replaceable test sample by the projection 222 on the holding screw 32 on the upper specimen holder 31 and the lower specimen sample platform 22.
Further, in the present invention, the top of described lower sample 223 is lower than the notch of described sample cell 221, also be, lower sample 223 is after the sample cell 221 that is installed on lower specimen sample platform 22, the upper surface of lower sample 223 is than the low certain size of upper surface of lower specimen sample platform 22, can accommodating some lubricant mediums to form one, the different crude oil of viscosity for example, clear water, the aqueous solution that potential of hydrogen is different, the space of the small solid particle of simulated seawater solution or simulation powder dirt etc., so that there are the true lubricated environment such as the different sea water solution of clear water or potential of hydrogen or pressed powder dirt in stretcher and tube contacts district in can more approaching simulation petroleum gas field tensioner for pipe-laying ship pipeline laying process, thereby can estimate exactly friction behavior and the action rule of different elasticity samples in rubbing wear, can improve the quality and reliability of petroleum gas field production domesticization deep water pipe laying tensioner equipment and the efficient of stretcher operation.
According to an embodiment of the invention, described upper sample 311 and described lower sample 223 are made by nonmetallic materials or metal material respectively, the hardness number of described lower sample 223 is 25～85HRC, the hardness number of described upper sample 311 like this can the field stretcher laying work of more approaching simulation petroleum gas than the large 10～15HRC of hardness number of described lower sample 223.Specifically, this metal material comprises 45 common steel, alloy steel, X60, X65, X70, X80, X100, X120, aluminium etc.; These nonmetallic materials can comprise common rubber, plastics macromolecular material, concrete material, nylon material etc., such as natural rubber, styrene-butadiene rubber, nitrile rubber, urethane rubber, silicon rubber, fluororubber, nylon 66, nylon 6 etc.
Specifically, in the present invention, upper sample 311 is a rectangular structure, and lower sample 223 is a platy structure, forms the contact of unstable state face between the two.Certainly, in other embodiment, when the lower surface of upper sample 311 is external cylindrical surface or sphere, can form also between upper sample 311 and the lower sample 223 that the unstable state line contacts or the contact of unstable state point, this not on the shape of sample 311 and lower sample 223 limit.The present invention can pass through to change the shape of upper sample 311 to obtain the frictional experiment data under the different Contact Pair states such as a some contact, face contact.
Soft tribological modeling test unit of the present invention can be by the upper sample of different profiles and size, different loads, different sliding speeds, different acceleration frequencies, the upper sample of different lubricant mediums and various sample material and lower sample carry out the soft tribological modeling test of unstable state, soft friction process when simulating the stretcher laying work of petroleum gas field, but utilize the abrasion condition of sample on the miscellaneous equipment off-line analysis 311 and lower sample 223 surface in contacts after the off-test, thereby the parameter that obtains according to test and rule etc., travelling speed to the deep water pipe laying tensioner, select suitable tensioner crawler plate resilient material, with the quality and reliability of raising petroleum gas field production domesticization deep water pipe laying tensioner equipment and the efficient of stretcher operation.
According to an embodiment of the invention, see also shown in Figure 1, be fixedly connected with bracing frame 6 on the described pedestal 1, support frame as described above 6 comprises horizontal stand bar 61 and the vertical rack bar 62 that is connected, described unstable state load maintainer 5 is connected on the described horizontal stand bar 61, and the lower end of described vertical rack bar 62 is fixedly connected on the described pedestal 1.
Specifically, horizontal stand bar 61 is connected on the vertical rack bar 62 by web member 63, web member 63 has vertical through hole and horizontal through hole, horizontal stand bar 61 is located in the horizontal through hole of web member 63, vertical rack bar 62 is located in the vertical through hole of web member 63, and by holding screw horizontal stand bar 61 and vertical rack bar 62 are locked on the web member 63, thereby horizontal stand bar 61 can be adjusted its height and positions on vertical rack bar 62 by this web member 63; The shell 51 of unstable state load maintainer 5 is connected on the horizontal stand bar 61 by load maintainer web member 34, and lock by the lock-screw of load maintainer web member 34, unstable state load maintainer 5 can be adjusted its horizontal levels on horizontal stand bar 61 by load maintainer web member 34.
According to an embodiment of the invention, described unstable state driving mechanism 4 is linear electric motors, described linear electric motors comprise U-shaped slot type linear motor stator electric 41 and U-shaped slot type linear motor rotor 42, and described U-shaped slot type linear motor rotor 42 links to each other with described lower specimen sample platform 22.
Specifically, lower specimen sample platform 22 links to each other with the U-shaped slot type linear motor rotor 42 of linear electric motors by sample stage web member 26, this sample stage web member 26 has level connection joint section 261 and vertical connecting portion 262, this level connection joint section 261 is fixedly connected between straight line slide 25 and the lower specimen sample platform 22, and this vertical connecting portion 262 links to each other with U-shaped slot type linear motor rotor 42.
The above only is several embodiments of the present invention, and those skilled in the art can carry out various changes or modification to the embodiment of the invention according to the disclosed content of application documents and not break away from the spirit and scope of the present invention.
Claims (10)
1. a soft tribological modeling test unit is characterized in that, described soft tribological modeling test unit comprises:
Pedestal;
Lower sample assembly, it is arranged on the described pedestal, described lower sample assembly comprises line slideway and lower specimen sample platform, described line slideway is fixedly connected on the upper end of described pedestal, described lower specimen sample platform links to each other with a unstable state driving mechanism, and described lower specimen sample platform can be connected on the described line slideway by described unstable state driving mechanism with moving horizontally;
Upper sample assembly, it comprises specimen holder, and described upper specimen holder links to each other with a unstable state load maintainer, and described upper specimen holder can be arranged on the top of described lower sample assembly with moving axially by described unstable state load maintainer.
2. soft tribological modeling test unit as claimed in claim 1, it is characterized in that, the two ends of described line slideway are connected with respectively left block and right block, the side relative with described right block at described left block is respectively equipped with travel switch, and described two travel switches are electrically connected with described unstable state driving mechanism.
3. soft tribological modeling test unit as claimed in claim 2, it is characterized in that, described lower sample assembly also comprises the straight line slide, described straight line slide is fixedly connected on the lower end of described lower specimen sample platform, and be connected to slidably on the described line slideway, according to the horizontal reciprocating movement of described straight line slide, the two ends of described straight line slide contact with described two travel switches respectively or separate.
4. soft tribological modeling test unit as claimed in claim 1 is characterized in that, described unstable state load maintainer comprises:
Shell, its upper end links to each other with a straight line stepper motor;
Actuating strut, it can be located in the described shell with moving axially, and the upper end of described actuating strut is connected with screw, and described screw links to each other with described linear stepping motor, and the lower end of described actuating strut passes described shell and links to each other with described upper specimen holder.
5. soft tribological modeling test unit as claimed in claim 4, it is characterized in that, be provided with pressure transducer between described actuating strut and described screw, described pressure transducer is electrically connected with described linear stepping motor, and the outside of described actuating strut is arranged with pressure spring.
6. soft tribological modeling test unit as claimed in claim 1, it is characterized in that, the lower end of described upper specimen holder is folded with sample, the upper end of described lower specimen sample platform is provided with sample cell, the bottom of described sample cell is provided with a plurality of projections, offer a plurality of grooves once on the sample, described lower sample is set on described a plurality of projection by its a plurality of grooves and is connected in the described sample cell.
7. soft tribological modeling test unit as claimed in claim 6 is characterized in that, the upper surface of described lower sample is lower than the notch of described sample cell.
8. soft tribological modeling test unit as claimed in claim 6, it is characterized in that, described upper sample and described lower sample are made by nonmetallic materials or metal material respectively, the hardness number of described lower sample is 25～85HRC, and the hardness number of described upper sample is than the large 10～15HRC of hardness number of described lower sample.
9. soft tribological modeling test unit as claimed in claim 1, it is characterized in that, be fixedly connected with bracing frame on the described pedestal, support frame as described above comprises horizontal stand bar and the vertical rack bar that is connected, described unstable state load maintainer is connected on the described horizontal stand bar, and the lower end of described vertical rack bar is fixedly connected on the described pedestal.
10. soft tribological modeling test unit as claimed in claim 1, it is characterized in that, described unstable state driving mechanism is linear electric motors, described linear electric motors comprise U-shaped slot type linear motor stator electric and U-shaped slot type linear motor rotor, and described U-shaped slot type linear motor rotor links to each other with described lower specimen sample platform.
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| CN106679947A (en) * | 2016-11-30 | 2017-05-17 | 国机智能科技有限公司 | Seal friction process on-line intelligent detection diagnosis test system |
| CN106769578A (en) * | 2016-11-30 | 2017-05-31 | 国机智能科技有限公司 | Rubber-plastic sealing friction energy loss detects simulation system with on-line intelligence |
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| CN107831087B (en) * | 2017-12-13 | 2024-04-05 | 武汉红金龙印务股份有限公司 | Apparatus and method for detecting wear resistance of printed matter |
| CN108225959A (en) * | 2018-01-16 | 2018-06-29 | 江苏亨通高压海缆有限公司 | Sea optical cable abrasion resistance detection device and detection method thereof |
| CN111781078A (en) * | 2020-07-13 | 2020-10-16 | 武汉轻工大学 | In-situ comprehensive test equipment for simulating high-altitude pipe climbing operation contact area |
| CN113188788A (en) * | 2021-06-10 | 2021-07-30 | 郑州轻工业大学 | Friction condition analysis test device for robot gripper during rapid grabbing |
| CN113959880A (en) * | 2021-10-11 | 2022-01-21 | 中国航发沈阳发动机研究所 | System and method for testing frictional wear performance of meshing surface of turbine blade shroud |
| CN113959880B (en) * | 2021-10-11 | 2024-03-19 | 中国航发沈阳发动机研究所 | Turbine blade shroud engagement surface friction and wear performance test system and method |
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