CN207066705U - A kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision - Google Patents

A kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision Download PDF

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Publication number
CN207066705U
CN207066705U CN201721061155.1U CN201721061155U CN207066705U CN 207066705 U CN207066705 U CN 207066705U CN 201721061155 U CN201721061155 U CN 201721061155U CN 207066705 U CN207066705 U CN 207066705U
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China
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bending
axis
cylindrical
hole
hydraulic cylinder
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CN201721061155.1U
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Inventor
秦安壮
高博
曹长振
卢青针
杨志勋
陈金龙
岳前进
阎军
尹原超
吴尚华
张聪
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Dalian University of Technology
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Dalian University of Technology
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Abstract

The utility model discloses a kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision, it is characterised in that including base and along adjustable fixed dolly, moving cart and the first fixed pulley arranged in a straight line on the base;The lower end of the adjustable fixed dolly is connected by toothed track with the base, and the sawtooth of the toothed track extends perpendicularly to the straight line, and the lower end of the adjustable fixed dolly has the flank of tooth to match with the toothed track;The lower end both sides of the moving cart are respectively equipped with multiple wheels, and the wheel is slidably connected by horizontal concrete chute and the base, the bearing of trend of the horizontal concrete chute and the straight line parallel.This experimental provision Nover practical, it is power resources to only rely on hydraulic cylinder, you can realizes kinds of experiments mode.Moreover, both can effectively control the application of respective load independently of each other.Meanwhile any conversion of loading sequence can be realized according to engineering and design requirement.

Description

A kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision
Technical field
The utility model is related to a kind of new can realize stretch bending and Subjected To Combined Axial Loading And Bending to large-scale elongated marine flexible pipeline The mechanical property experiment device of loading.
Background technology
China's Marine oil and gas resource rich reserves, and most of it is distributed in the deep water sea areas such as the South Sea.Flexible duct etc. is deep One of indispensable equipment in extra large oil-gas mining, it is mainly responsible for the oil-gas transportation between equipment.Be connected to subsea wellheads with Pipeline is referred to as submarine pipeline between manifold;It is connected between manifold and marine storage device and being referred to as vertical in form is presented Standpipe.Flexible conduit structure is generally formed by multilayer stiffener spiral winding.Marine flexible pipeline in operating condition in place, Due to the reciprocating motion under complicated marine environment of effect and platform of stormy waves stream, the pipeline for being connected to floating body will be by stretch bending Combined load.Because flexible duct itself is complicated spiral winding structure, each layer component stress of stretch bending compound action presents high Horizontal reciprocating circulates, and then produces fatigue damage and even wear, and fatigue rupture finally occurs.Therefore, the use longevity of flexible duct Life is the critical performance parameters of structure design.Further, since pipeline configuration is complicated, it is tired that theory with numerical method is difficult to accurate description Labor failure mechanism by experimental simulation, it is necessary to study its failure mechanism and whole life prediction.On the other hand, storage transport and The flexible duct of position operation, because contingency environmental load will bear obvious Subjected To Combined Axial Loading And Bending load, holds at touchdown point when serious The failure of armouring flexing easily occurs, bigger difficulty is brought to repair.
In summary, theoretical and numerical method is often difficult to pipeline actual forces scholarship and moral conduct under the accurate description combined load. Therefore, in order to study mechanical behavior, structural response and failure mechanism of the pipeline under stretch bending and Compact-bending Load in detail, it is necessary to logical Overtesting method is tested to be combined Load Simulation to marine flexible pipeline danger section.It was found that and summarize pipeline failure rule, Reduce the probability destroyed during pipeline use and ensure whole pipeline service life.The combined load test of flexible duct is to pipe The important test of road applicable cases, because the research and development of domestic flexible duct are still in starting state, the experiment under combined load is surveyed Examination experience still has some deficits, and needs a set of targetedly experimental provision badly and flexible duct is tested and verified.Study the power of pipeline Scholarship and moral conduct is characterized and failure mechanism, so as to grasp the experiment key technology of dynamic standpipe/cable comprehensively.
Utility model content
According to technical problem set forth above, and provide a kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experiment Device.
According to actual condition, using the equivalent method of load, stretch bending and Subjected To Combined Axial Loading And Bending load are carried out to marine flexible pipeline Simulation.Therefore testing equipment needs to bring it about setting for oscillation cycle flexural deformation comprising stretching, compression device and application moment of flexure It is standby.In addition, experimentation needs to configure measuring apparatus, and such as foil gauge or sensor are to extract pipeline deformation process phase Related parameter index (middle or direct physical quantity).Flexible duct combination loading experiment flow is generally as follows:Sample, be solid Fixed, pieces of cloth, loading, measurement and post processing mode expansion.Experiment will formulate corresponding testing scheme before starting and pipe samples are entered Row is chosen, and then pipeline to be tested is fixed on test stand, and foil gauge arrangement is carried out in test position according to requirement of experiment, And it is coupled with data acquisition equipment.Ensure the errorless rear start-up loading equipment of aforesaid operations, while gather related data in real time. Finally, the data obtained is analyzed and processed and forms perfect laboratory report.
The technological means that the utility model uses is as follows:
A kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision, including base and along it is arranged in a straight line Adjustable fixed dolly, moving cart and the first fixed pulley on the base;
The lower end of the adjustable fixed dolly is connected by toothed track with the base, and the sawtooth of the toothed track prolongs Direction is stretched perpendicular to the straight line, and the lower end of the adjustable fixed dolly has the flank of tooth to match with the toothed track, institute State adjustable fixed dolly and be provided with the second fixed pulley, first hydraulic cylinder and two the first supporting plates parallel to each other, described in two The first cylindrical bending apparatus is provided between the upper end of first supporting plate, the first cylindrical bending apparatus is close to the movement One end of dolly has the first connecting flange faces, the both sides side wall of the first cylindrical bending apparatus by the first rotary shaft with The first supporting plate rotatable connection, the first cylindrical bending apparatus are provided with first through hole, the axis of the first through hole Overlapped with the axis of the described first cylindrical bending apparatus;
The lower end both sides of the moving cart are respectively equipped with multiple wheels, and the wheel is slided by horizontal concrete chute and the base Connection, the bearing of trend of the horizontal concrete chute and the straight line parallel, interior be provided with of the horizontal concrete chute are used for the moving cart Fixed dolly limited slip block group, the moving cart are provided with two the second supporting plates and cunning parallel to each other after adjustment position Road, for the slideway between two second supporting plates, the slideway is provided with tooth along the linear extension, the slideway Bar, is additionally provided with the second hydraulic cylinder for promoting the rack to be slided along the slideway in the moving cart, two described second The second cylindrical bending apparatus is provided between the upper end of fagging, the second cylindrical bending apparatus is provided with the second through hole, institute The axis for stating the second through hole overlaps with the axis of the described second cylindrical bending apparatus, and being provided with second through hole can be along described The cylindrical attachment means that second through hole slides, the axial length of the cylindrical attachment means are more than the hole depth of second through hole, The both ends of the cylindrical attachment means are respectively equipped with the second connecting flange faces, close to the described of the adjustable fixed dolly side The middle part of second connecting flange faces is provided with steel wire rope connecting portion, second connection method away from the adjustable fixed dolly side The middle part in blue face is provided with the third through-hole that the steel wire rope connecting portion is extended to along the axis of the cylindrical attachment means, described The inwall of second through hole is provided with the groove that a plurality of edge extends parallel to the second through-bore axis direction, the cylinder connection dress The outer wall put is provided with the raised line with the groove match, and the both sides side wall of the second cylindrical bending apparatus passes through second turn Moving axis is rotatably connected with second supporting plate, and the downside side wall of the second cylindrical bending apparatus is fixed with sector gear, The engagement of the sawtooth of the sector gear and the rack;
Second fixed pulley, two first supporting plates parallel to each other, two parallel to each other described second Fagging and first fixed pulley are arranged in order along the straight line;
Axis of the axis of the first cylindrical bending apparatus perpendicular to first rotary shaft;
Axis of the axis of the second cylindrical bending apparatus perpendicular to second rotary shaft;
Intersection point and second circle of the axis of the first cylindrical bending apparatus with the axis of first rotary shaft The intersection point of the axis of cylindrical bending device and the axis of second rotary shaft is located in the same horizontal plane, i.e., highly consistent, is made After obtaining flexible duct connection, level can be in;
The 3rd hydraulic cylinder is additionally provided with the base;
A kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision also include the first stretchable steel wire Rope and the second drawable steel cord;
Under working condition, first connecting flange faces and second connection close to the adjustable fixed dolly side Flange face is connected with the both ends of flexible duct respectively, is arranged in the tube chamber of flexible duct provided with multiple axis along flexible duct Support frame, the middle part of support frame as described above are provided with centre bore, and the axis of the centre bore is located on the axis of flexible duct;
One end of the first drawable steel cord is connected with the first hydraulic cylinder, the first drawable steel cord The other end around second fixed pulley lower edge and from side of second fixed pulley away from the adjustable fixed dolly around Go out, and sequentially pass through the first through hole and the centre bore and be connected with the steel wire rope connecting portion, the first hydraulic cylinder is drawn The tight first drawable steel cord is so as to drive the cylindrical attachment means compressed flexible pipeline, said process, and described the Two drawable steel cords are in relaxed state;
One end of the second drawable steel cord is connected with the 3rd hydraulic cylinder, the second drawable steel cord The other end bypasses the lower edge of first fixed pulley and laid out from the side of first fixed pulley away from the moving cart, and It is connected through the third through-hole with the steel wire rope connecting portion, the 3rd hydraulic cylinder tenses the second drawable steel cord So as to drive the cylindrical attachment means stretching flexible duct, said process, the first drawable steel cord is in relaxation State;
The second hydraulic cylinder is rotated by sector gear described in the rack drives, so as to pass through the described second cylinder Bending apparatus applies moment of flexure, said process, the first drawable steel cord and the second stretchable steel wire to flexible duct Rope is in relaxed state, and now, flexible duct both ends vertical displacement is zero.
The aperture of the first through hole is smaller, it is allowed to the first drawable steel cord by.
The dolly limited slip block group comprises at least two dolly limited slip blocks and is located at the corresponding moving cart respectively Lower end side on multiple wheels both sides.
Second fixed pulley, two first supporting plates parallel to each other, two parallel to each other described second Fagging and first fixed pulley are arranged in order along the straight line, ensure that the first drawable steel cord and described second can Each Impact direction on stretching steel wire rope is located in same perpendicular.
To adapt to the flexible duct of different length, the adjustable fixed dolly realizes that position is adjusted by the toothed track Section;It can prevent contact surface from getting rusty with coating butter between the lower end flank of tooth of the adjustable fixed dolly and the toothed track;
Between the slideway and the rack can coating butter, ensure slide it is smooth, realize effective transmission of power, and then subtract Few experimental error.
The steel wire rope connecting portion includes the circular hole connected with the third through-hole, and the circular hole connects provided with steel wire rope Post, steel wire rope connecting pole the radially extending along the circular hole.
The base includes determining provided with the toothed track, the horizontal concrete chute, the 3rd hydraulic cylinder and described first Plate and lower panel above pulley, truss is provided between the top panel and the lower panel.
Support frame as described above is stretched out and equally distributed as the center of circle using the centre bore including three by the centre bore Pole, the free end of the pole are provided with the arc to match with the tube chamber of flexible duct.
It is as follows that press-bending method of testing is carried out using the experimental provision:
1. according to the length of flexible duct to be measured, the correct position adjustable fixed dolly being fixed in toothed track, lead to The trickle movement of moving cart is crossed by pipe arrangement to correct position, fixes moving cart afterwards;
2. connecting second hydraulic cylinder and tooth form, ensure that relative displacement can not occurs in motion in both;
3. fixing flexible pipeline, ensure that flexible duct is horizontal, and without preloading;
4. according to requirement of experiment, foil gauge can be pasted in flexible duct surface appropriate location.It will be connected to adhesive tape simultaneously Winding displacement one end of foil gauge is fixed on the outside of the second cylindrical bending apparatus, prevents from causing survey because winding displacement rocks in test process The fluctuation of data is tried, the other end is connected to acquisition system, realizes strain data real-time Transmission;
5. second hydraulic cylinder is connected on controller, second hydraulic cylinder can be made to apply load by controller, make test specimen by It is expected that flecition;
After the completion of 6. whole experimental provision is built, preliminary debugging is first carried out to whole test system.Pass through each hydraulic cylinder Driving is loaded by a small margin to pipeline, analyzes the curve that the strain of collection changes over time.After test request to be achieved, it can divide Group carries out experiment;
7. each hydraulic cylinder of control, a variety of load modes such as substep, synchronous are realized, by adjusting first hydraulic cylinder and the second liquid The Subjected To Combined Axial Loading And Bending loading of different proportion can be set in cylinder pressure;
8. be compressed experiment, by controlling first hydraulic cylinder, the compression experiment of flexible duct is realized;When being bent During experiment, by controlling second hydraulic cylinder, the alternating bending test of flexible duct is realized;When carrying out Subjected To Combined Axial Loading And Bending experiment, lead to Control first hydraulic cylinder and second hydraulic cylinder are crossed, realizes the Subjected To Combined Axial Loading And Bending experiment of flexible duct;
9. the power that record second hydraulic cylinder is applied, measures sector gear radius, must can put on curved on flexible duct Square;Meanwhile record the horizontal pull that first hydraulic cylinder is applied;
10. more than the test and data to collecting are counted and error analysis, provides rational test result and most End form is reported into full experiment.
It is as follows that stretch bending method of testing is carried out using the experimental provision:
1. according to the length of flexible duct to be measured, the correct position adjustable fixed dolly being fixed in toothed track, lead to The trickle movement of moving cart is crossed by pipe arrangement to correct position, fixes moving cart afterwards;
2. connecting second hydraulic cylinder and tooth form, ensure that relative displacement can not occurs in motion in both;
3. fixing flexible pipeline, ensure that flexible duct is horizontal, and without preloading;
4. according to requirement of experiment, foil gauge can be pasted in flexible duct surface appropriate location.It will be connected to adhesive tape simultaneously Winding displacement one end of foil gauge is fixed on the outside of the second cylindrical bending apparatus, prevents from causing survey because winding displacement rocks in test process The fluctuation of data is tried, the other end is connected to acquisition system, realizes strain data real-time Transmission;
5. second hydraulic cylinder is connected on controller, second hydraulic cylinder can be made to apply load by controller, make test specimen by It is expected that flecition;
After the completion of 6. whole experimental provision is built, preliminary debugging is first carried out to whole test system.Pass through each hydraulic cylinder Driving is loaded by a small margin to pipeline, analyzes the curve that the strain of collection changes over time.After test request to be achieved, it can divide Group carries out experiment;
7. each hydraulic cylinder of control, a variety of load modes such as substep, synchronous are realized, by adjusting second hydraulic cylinder and the 3rd liquid The stretch bending combination loading of different proportion can be set in cylinder pressure;
8. carry out stretching experiment, by controlling the 3rd hydraulic cylinder, the stretching experiment of flexible duct is realized;When being bent During experiment, by controlling second hydraulic cylinder, the alternating bending test of flexible duct is realized;When carrying out stretch bending combination experiment, lead to The 3rd hydraulic cylinder of control and second hydraulic cylinder are crossed, realizes the stretch bending combination experiment of flexible duct;
9. the power that record second hydraulic cylinder is applied, measures sector gear radius, must can put on curved on flexible duct Square;Meanwhile record the horizontal pull that the 3rd hydraulic cylinder is applied;
10. more than the test and data to collecting are counted and error analysis, provides rational test result and most End form is reported into full experiment.
The utility model has the advantage that:
1. an experimental provision Nover practical, it is power resources to only rely on hydraulic cylinder, you can realizes kinds of experiments mode.And And both can effectively control the application of respective load independently of each other.Meanwhile it can be realized and added according to engineering and design requirement Any conversion of load order.
2. for different length umbilical, the position adjustments of adjustable fixed dolly can be realized by toothed track, pass through shifting The dynamic trickle movement of dolly is by pipe arrangement to correct position, fixed moving cart afterwards, realizes the reasonable Arrangement of pipeline, this practicality It is new that there is superior flexibility.
3. the device can be tested various flexible ducts, for example, the various cementation pipelines such as rubber tube, flotation tube with And non-adhesive pipeline.
4. in flexible duct BENDING PROCESS, the requirement of experiment of pure bending can be achieved by Based on Pure Bending Moment load action in flexible duct, And the moment of flexure put on by second hydraulic cylinder on flexible duct is relatively stable uniformly, facilitates later data to record and handle.
5. base of the present utility model is formed using truss structure and steel plate, load-bearing is big, and saves steel, is ensureing entirety Overall structure weight is efficiently reduced on the premise of rigidity and intensity.There is designability, economy.
6. three hydraulic cylinder power resources of the present utility model, record data is convenient, and calculates and put on flexible duct Calculation of Bending Moment formula is simple, easily calculates and operates.
7. flexible duct surrounding space is larger, the convenient corresponding instrument that adds measures record to test piece deformation.
8. when carrying out the test of stretch bending combined load, while pulling force is born in end, the second cylindrical bending apparatus applies Bending load, the behavior truly simulation can be connected to the flexible duct of platform section.
9. when carrying out Subjected To Combined Axial Loading And Bending load test, flexible duct is realized by tensing the first drawable steel cord Compression, the intraluminal support frame of flexible duct make compression load act on axis, realize that pure compression is tested.Moreover, the One drawable steel cord extended state fully realizes that Subjected To Combined Axial Loading And Bending loads without prejudice to the application of bending load.
10. the experimental provision avoids actuator directly applies pulling force or pressure to pipeline, load is transmitted by rope, Directly effect is avoided to produce larger damage to actuator.
The utility model can be widely popularized in fields such as experiment tests for the foregoing reasons.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is done simply to introduce in description of the prior art, it should be apparent that, drawings in the following description are Some embodiments of the utility model, for those of ordinary skill in the art, do not paying the premise of creative labor Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is that a kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending are real in specific embodiment of the present utility model The space structure schematic diagram of experiment device.
Fig. 2 is the assembling signal of the second cylindrical bending apparatus and sector gear in specific embodiment of the present utility model Figure.
Fig. 3 is the structural representation of cylindrical attachment means in specific embodiment of the present utility model.
Fig. 4 is the structural representation of support frame in specific embodiment of the present utility model.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to The scope of the utility model protection.
As Figure 1-Figure 4, a kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision, including base with And along adjustable fixed dolly 1, the fixed pulley 3 of moving cart 2 and first arranged in a straight line on the base;
The lower end of the adjustable fixed dolly 1 is connected by toothed track 4 with the base, the saw of the toothed track 4 Tooth extends perpendicularly to the straight line, and the lower end of the adjustable fixed dolly 1 has the tooth to match with the toothed track 4 Face, the adjustable fixed dolly 1 are provided with the second fixed pulley 5, first hydraulic cylinder 6 and two the first supporting plates 7 parallel to each other, The first cylindrical bending apparatus 8, the first cylindrical bending apparatus 8 are provided between the upper end of two first supporting plates 7 There are the first connecting flange faces close to one end of the moving cart 2, the both sides side wall of the first cylindrical bending apparatus 8 is led to Cross the first rotary shaft 9 to be rotatably connected with first supporting plate 7, the first cylindrical bending apparatus 8 is provided with first through hole, institute The axis for stating first through hole overlaps with the axis of the described first cylindrical bending apparatus 8;
The lower end both sides of the moving cart 2 be respectively equipped with it is multiple wheel 10, it is described wheel 10 by horizontal concrete chute 11 with it is described Base is slidably connected, bearing of trend and the straight line parallel of the horizontal concrete chute 11, is provided with and is used in the horizontal concrete chute 11 Fixed dolly limited slip block group after the adjustment position of moving cart 2, the moving cart 2 are provided with two parallel to each other the Two supporting plates 12 and slideway 13, the slideway 13 is between two second supporting plates 12, and the slideway 13 is along described straight Line extends, and the slideway 13 is provided with rack 14, is additionally provided with the moving cart 2 and promotes the rack 14 along the slideway 13 The second hydraulic cylinder 15 of slip, the second cylindrical bending apparatus 16, institute are provided between the upper end of two second supporting plates 12 State the second cylindrical bending apparatus 16 and be provided with the second through hole 17, the axis of second through hole 17 and the described second cylinder are curved The axis of bent device 16 is overlapped, and the cylindrical attachment means that can be slided along second through hole 17 are provided with second through hole 17 18, the axial length of the cylindrical attachment means 18 is more than the hole depth of second through hole 17, the cylindrical attachment means 18 Both ends are respectively equipped with the second connecting flange faces 19, second connecting flange faces 19 close to the adjustable fixed side of dolly 1 Middle part be provided with steel wire rope connecting portion 20, away from the adjustable fixed side of dolly 1 second connecting flange faces 19 in Portion is provided with along the axis of the cylindrical attachment means 18 and extends to the third through-hole of the steel wire rope connecting portion 20, and described second The inwall of through hole 17 is provided with the groove 21 that a plurality of edge extends parallel to the axis direction of the second through hole 17, the cylinder connection The outer wall of device 18 is provided with the raised line 22 to match with the groove 21, the both sides side wall of the second cylindrical bending apparatus 16 It is rotatably connected by the second rotary shaft 23 with second supporting plate 12, the downside side wall of the second cylindrical bending apparatus 16 It is fixed with sector gear 24, the engagement of the sawtooth of the sector gear 24 and the rack 14;
5, two, second fixed pulley, first supporting plate 7, two parallel to each other described second parallel to each other Supporting plate 12 and first fixed pulley 3 are arranged in order along the straight line;
Axis of the axis of the first cylindrical bending apparatus 8 perpendicular to first rotary shaft 9;
Axis of the axis of the second cylindrical bending apparatus 16 perpendicular to second rotary shaft 23;
The intersection point and described second of the axis of the first cylindrical bending apparatus 16 and the axis of first rotary shaft 9 The intersection point of the axis of cylindrical bending apparatus 16 and the axis of second rotary shaft 23 is located in the same horizontal plane;
The 3rd hydraulic cylinder 25 is additionally provided with the base;
A kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision also include the first stretchable steel wire The drawable steel cord 27 of rope 26 and second;
Under working condition, first connecting flange faces and second company close to the adjustable fixed side of dolly 1 Both ends of the acting flange face 19 respectively with flexible duct 28 are connected, provided with multiple along flexible duct 28 in the tube chamber of flexible duct 28 The support frame of axis arrangement, the middle part of support frame as described above are provided with centre bore 29, and the axis of the centre bore 29 is located at flexible duct On 28 axis;
One end of the first drawable steel cord 26 is connected with the first hydraulic cylinder 6, the first stretchable steel wire The other end of rope 26 bypasses the lower edge of second fixed pulley 5 and from second fixed pulley 5 away from the adjustable fixed dolly 1 Side lay out, and sequentially pass through the first through hole and the centre bore 29 and be connected with the steel wire rope connecting portion 20, it is described First hydraulic cylinder 6 tenses the first drawable steel cord 26 so as to drive the compressed flexible pipeline of cylindrical attachment means 18 28;
One end of the second drawable steel cord 27 is connected with the 3rd hydraulic cylinder 25, the second stretchable steel wire The other end of rope 27 around first fixed pulley 3 lower edge and from one of first fixed pulley 3 away from the moving cart 2 Side is laid out, and is connected through the third through-hole with the steel wire rope connecting portion, and the 3rd hydraulic cylinder 25 tenses described second Drawable steel cord 27 is so as to driving the cylindrical attachment means 18 to stretch flexible duct 28;
The second hydraulic cylinder 15 drives the sector gear 24 to rotate by the rack 14, so as to pass through described second Cylindrical bending apparatus 16 applies moment of flexure to flexible duct 28.
The steel wire rope connecting portion 20 includes the circular hole connected with the third through-hole, and the circular hole connects provided with steel wire rope Connect post, steel wire rope connecting pole the radially extending along the circular hole.
The base is included provided with the toothed track 4, the horizontal concrete chute 11, the 3rd hydraulic cylinder 25 and described the Plate 30 and lower panel 31 above one fixed pulley 3, truss 32 is provided between the top panel 30 and the lower panel 31.
Support frame as described above is stretched out by the centre bore 29 including three and is that the center of circle is uniformly divided with the centre bore 29 The pole 33 of cloth, the free end of the pole 33 are provided with the arc 34 to match with the tube chamber of flexible duct 28.
The dolly limited slip block group is including at least two dolly limited slip blocks 35 and small positioned at the corresponding movement respectively The both sides of multiple wheels 10 on the lower end side of car 2.
Finally it should be noted that:Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited System;Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should Understand:It can still modify to the technical scheme described in foregoing each example, either to which part or whole skills Art feature carries out equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is departed from the utility model The scope of each case technology scheme.

Claims (4)

1. a kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision, it is characterised in that including base and edge Adjustable fixed dolly, moving cart and the first fixed pulley arranged in a straight line on the base;
The lower end of the adjustable fixed dolly is connected by toothed track with the base, the sawtooth extension side of the toothed track To perpendicular to the straight line, the lower end of the adjustable fixed dolly has a flank of tooth to match with the toothed track, it is described can Fixed dolly is adjusted to be provided with the second fixed pulley, first hydraulic cylinder and two the first supporting plates parallel to each other, two described first The first cylindrical bending apparatus is provided between the upper end of supporting plate, the first cylindrical bending apparatus is close to the moving cart One end there are the first connecting flange faces, the both sides side wall of the first cylindrical bending apparatus by the first rotary shaft with it is described First supporting plate is rotatably connected, and the first cylindrical bending apparatus is provided with first through hole, the axis of the first through hole and institute The axis for stating the first cylindrical bending apparatus overlaps;
The lower end both sides of the moving cart are respectively equipped with multiple wheels, and the wheel is slided by horizontal concrete chute with the base to be connected Connect, the bearing of trend of the horizontal concrete chute and the straight line parallel, be provided with the horizontal concrete chute and be used for moving cart tune Fixed dolly limited slip block group, the moving cart are provided with two the second supporting plates and slideway parallel to each other behind whole position, For the slideway between two second supporting plates, the slideway is provided with rack along the linear extension, the slideway, The second hydraulic cylinder for promoting the rack to be slided along the slideway, two second supporting plates are additionally provided with the moving cart Upper end between be provided with the second cylindrical bending apparatus, the second cylindrical bending apparatus is provided with the second through hole, described The axis of two through holes overlaps with the axis of the described second cylindrical bending apparatus, and being provided with second through hole can be along described second The cylindrical attachment means that through hole slides, the axial length of the cylindrical attachment means is more than the hole depth of second through hole, described The both ends of cylindrical attachment means are respectively equipped with the second connecting flange faces, and described second close to the adjustable fixed dolly side The middle part of connecting flange faces is provided with steel wire rope connecting portion, second connecting flange faces away from the adjustable fixed dolly side Middle part be provided with along the axis of the cylindrical attachment means and extend to the third through-hole of the steel wire rope connecting portion, described second The inwall of through hole is provided with the groove that a plurality of edge extends parallel to the second through-bore axis direction, the cylindrical attachment means Outer wall is provided with the raised line with the groove match, and the both sides side wall of the second cylindrical bending apparatus passes through the second rotary shaft It is rotatably connected with second supporting plate, the downside side wall of the second cylindrical bending apparatus is fixed with sector gear, described The engagement of the sawtooth of sector gear and the rack;
Second fixed pulley, two first supporting plates parallel to each other, two second supporting plates parallel to each other It is arranged in order with first fixed pulley along the straight line;
Axis of the axis of the first cylindrical bending apparatus perpendicular to first rotary shaft;
Axis of the axis of the second cylindrical bending apparatus perpendicular to second rotary shaft;
Intersection point and second cylinder of the axis of the first cylindrical bending apparatus with the axis of first rotary shaft The intersection point of the axis of bending apparatus and the axis of second rotary shaft is located in the same horizontal plane;
The 3rd hydraulic cylinder is additionally provided with the base;
A kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision also include the first drawable steel cord and Second drawable steel cord;
Under working condition, first connecting flange faces and second adpting flange close to the adjustable fixed dolly side Face is connected with the both ends of flexible duct respectively, the support arranged in the tube chamber of flexible duct provided with multiple axis along flexible duct Frame, the middle part of support frame as described above are provided with centre bore, and the axis of the centre bore is located on the axis of flexible duct;
One end of the first drawable steel cord is connected with the first hydraulic cylinder, the first drawable steel cord it is another End bypasses the lower edge of second fixed pulley and laid out from side of second fixed pulley away from the adjustable fixed dolly, and Sequentially pass through the first through hole and the centre bore to be connected with the steel wire rope connecting portion, described in the first hydraulic cylinder tension First drawable steel cord is so as to driving the cylindrical attachment means compressed flexible pipeline;
One end of the second drawable steel cord is connected with the 3rd hydraulic cylinder, the second drawable steel cord it is another End bypasses the lower edge of first fixed pulley and laid out from the side of first fixed pulley away from the moving cart, and passes through The third through-hole is connected with the steel wire rope connecting portion, the 3rd hydraulic cylinder tense the second drawable steel cord so as to Drive the cylindrical attachment means stretching flexible duct;
The second hydraulic cylinder is rotated by sector gear described in the rack drives, so as to be bent by the described second cylinder Device applies moment of flexure to flexible duct.
2. a kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision according to claim 1, its feature It is:The steel wire rope connecting portion includes the circular hole connected with the third through-hole, and the circular hole is provided with steel wire rope connecting pole, Steel wire rope connecting pole the radially extending along the circular hole.
3. a kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision according to claim 1, its feature It is:The base includes being provided with the toothed track, the horizontal concrete chute, the 3rd hydraulic cylinder and first fixed pulley Above plate and lower panel, truss is provided between the top panel and the lower panel.
4. a kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision according to claim 1, its feature It is:Support frame as described above is stretched out by the centre bore including three and using the centre bore as the equally distributed branch in the center of circle Bar, the free end of the pole are provided with the arc to match with the tube chamber of flexible duct.
CN201721061155.1U 2017-08-23 2017-08-23 A kind of new marine flexible pipeline stretch bending and Subjected To Combined Axial Loading And Bending experimental provision Expired - Fee Related CN207066705U (en)

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