CN113899617A - Fulcrum position adjusting device for full-size pipeline resonance bending fatigue testing machine - Google Patents
Fulcrum position adjusting device for full-size pipeline resonance bending fatigue testing machine Download PDFInfo
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 30
- 238000005452 bending Methods 0.000 title claims abstract description 29
- 230000001133 acceleration Effects 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 230000001174 ascending effect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 238000002955 isolation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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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
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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
- G01N3/04—Chucks
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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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0274—Tubular or ring-shaped specimens
Abstract
The invention discloses a fulcrum position adjusting device for a full-size pipeline resonance bending fatigue testing machine, which comprises a supporting and clamping part and a fulcrum moving part, wherein the fulcrum moving part is used for realizing the axial movement of the supporting and clamping part along a pipeline so as to adjust the position of the supporting and clamping part on the pipeline; the supporting and clamping part comprises a pipeline supporting plate, a plurality of support rods connected to the pipeline supporting plate, a supporting frame, a vertical air spring and a transverse air spring; the pipeline mounting hole has been seted up at the center of pipeline backup pad, and a plurality of vaulting poles are at the ascending interval arrangement of circumference of pipeline mounting hole, and every vaulting pole all stretches into in the pipeline mounting hole in order to be used for fixed pipeline towards the interior tip in pipeline mounting hole center, and wherein, partial vaulting pole can be radial movement in order to be suitable for the pipeline of different pipe diameters at the radial position at this vaulting pole place. The invention enables the position of the fulcrum to be easier to adjust, support and clamp, so as to solve the defects of difficult fulcrum adjustment and insufficient support flexibility of the resonance bending fatigue testing machine.
Description
Technical Field
The invention relates to a part fatigue test device, in particular to a fulcrum position adjusting device for a full-size pipeline resonance bending fatigue test machine.
Background
With the development of marine resources, marine risers and submarine pipelines are more widely used, but in the special environment of the sea, the pipelines are subjected to periodic loads, so that the service life of the pipeline joints becomes a part needing to be considered. To prevent premature failure of marine risers and subsea pipelines under cyclic loading, particularly for welded pipe joints and threaded pipe joints, the structures function to amplify stress, often failing first, and it is important to accurately predict the fatigue life of these structures. Aiming at the design, a testing machine for performing fatigue test on the marine riser and the submarine pipeline by applying the resonance principle has the advantages of high vibration frequency, small power, short test period, adaptability to the full-size marine riser and the submarine pipeline and the like.
The resonance bending fatigue testing machine is a testing machine based on the principle of pipeline resonance, and according to a vibration pattern diagram of a first-order mode of a steel pipe, two fulcrum positions with zero displacement exist when a pipeline is transversely vibrated and bent, and before the pipeline bending fatigue testing is carried out, zero points (static points), natural frequencies, required oscillation starting amplitudes and the like of wave direction amplitudes inherent to bending vibration of the pipeline need to be obtained. After the pivot is obtained, the pivot needs to be supported and clamped, and the left and right adjustment is required in subsequent tests, so a set of special supporting, clamping and moving device needs to be designed.
A resonance bending fatigue testing machine is introduced in the Chinese utility model with the publication number of CN202562796U, the supporting, clamping and moving device of the testing machine is divided into two parts, the pivot positions of a dead end pivot and a live end pivot adjusting device are adopted, and a ball screw is driven by a motor to move left and right, but the installed ball screw needs to be adjusted according to the length of a test pipeline, and when the installation pipeline is long, the needed ball screw is too long and is not convenient to install and use; the invention also discloses a resonance bending fatigue testing machine in the Chinese patent application with the publication number of CN108362586A, wherein a flexible supporting device of the testing machine consists of two saddle-shaped supports and four flexible cables, the two saddle-shaped supports are of a V-shaped structure and are oppositely arranged up and down, the position of a fulcrum is adjusted by a motor and a lead screw, the testing machine is small in size, a tested object pipeline is also small, the four flexible cables can support the small-size pipeline, but when the vibration stress of the large-size pipeline is overlarge, the method is obviously not suitable.
Disclosure of Invention
The invention aims to overcome the problems of inconvenient adjustment of the position of a pivot of the conventional pipeline resonance bending fatigue testing machine and overlarge vibration of a supporting point, and provides a pivot position adjusting device for a full-size pipeline resonance bending fatigue testing machine, so that the position of the pivot is easier to adjust, support and clamp, and the defects of difficult adjustment of the pivot of the resonance bending fatigue testing machine and insufficient support flexibility are overcome.
The technical scheme adopted by the invention is as follows: the fulcrum position adjusting devices for the full-size pipeline resonance bending fatigue testing machine are provided with two groups which are respectively arranged on two sides of a pipeline, each group of adjusting devices comprises a supporting and clamping part and a fulcrum moving part, and the fulcrum moving part is used for realizing the axial movement of the supporting and clamping part along the pipeline so as to adjust the position of the supporting and clamping part on the pipeline;
wherein the support clamping portion includes:
the pipeline supporting plate comprises a supporting rod mounting cover plate and a supporting rod mounting base plate, wherein the lower part of the supporting rod mounting cover plate is provided with a semicircular groove, the upper part of the supporting rod mounting base plate is provided with a semicircular groove, and the semicircular groove of the supporting rod mounting cover plate and the semicircular groove of the supporting rod mounting base plate are oppositely connected to form the pipeline mounting hole;
a plurality of stay bars connected to the pipe support plate, each of the stay bars being arranged in a radial direction of the pipe installation hole, and the plurality of stay bars being arranged at intervals in a circumferential direction of the pipe installation hole; the inner end part of each stay bar, facing the center of the pipeline mounting hole, extends into the pipeline mounting hole to be used for fixing a pipeline, wherein the stay bar connected to the stay bar mounting cover plate can move radially at the radial position of the stay bar so as to adjust the length of the stay bar extending into the pipeline mounting hole to adapt to pipelines with different pipe diameters;
the supporting frame comprises a base cross beam and center frame guide plate seats arranged on two sides of the base cross beam to form a U-shaped mounting opening, and the pipeline supporting plate is arranged in the U-shaped mounting opening; and
the air spring support comprises a vertical air spring and a transverse air spring, wherein the vertical air spring is arranged between the support rod installation bottom plate and the base cross beam to provide vertical flexible support, and the transverse air spring is arranged between the support rod installation bottom plate and the center frame guide plate seat to provide transverse flexible support.
Further, the fulcrum moving part comprises a fixed frame and a hydraulic moving device, wherein the hydraulic moving device comprises a hydraulic cylinder and a telescopic hydraulic rod, the hydraulic rod can do telescopic motion parallel to the axial direction of the pipeline under the action of hydraulic oil so as to adjust the position of the supporting and clamping part on the pipeline, the end part of the hydraulic cylinder is hinged to the fixed frame of the fulcrum moving part, and the end part of the hydraulic rod is hinged to a supporting frame of the supporting and clamping part.
Further, the fulcrum moving part is fixed on a base of the resonance bending fatigue testing machine, and the bottom of a support frame of the supporting and clamping part is provided with a beam guide roller.
Furthermore, the stay bar connected to the stay bar mounting cover plate is an upper stay bar, the upper stay bar is connected to the stay bar mounting cover plate through a bolt, a U-shaped groove matched with the bolt is formed in the upper stay bar, and the bolt penetrates through the U-shaped groove and can move in the U-shaped groove, so that the upper stay bar can move radially at the radial position of the upper stay bar.
Further, the inner end part of each support rod is provided with a support rod guide roller which is in contact with the pipeline and can roll on the pipeline so as to adjust the position of the support clamping part on the pipeline; and the support bar guide roller is provided with a brake block for locking the support bar guide roller.
Furthermore, a vibration acceleration sensor and a displacement sensor are arranged on the support rod mounting base plate.
Furthermore, one side, close to the strut mounting base plate, of the transverse air spring is connected with a center frame guide plate, cam followers are arranged on two sides of the strut mounting base plate, and the cam followers are in contact with the center frame guide plate and can roll on the center frame guide plate.
Furthermore, a supporting seat limiting plate is arranged on the center frame guide plate seat and used for limiting the pipeline supporting plate to move along the axial direction of the pipeline.
Furthermore, a lifting bolt is arranged on the center frame guide plate seat and used for lifting the adjusting device.
The invention has the beneficial effects that: the invention can adjust the position of the upper support rod according to the pipe diameter of the test pipeline to adapt to pipelines with different sizes, provides flexible support through the air spring, ensures that the vibration energy to the base is reduced in the test vibration process, can provide effective damping effect, adjusts the position of the fulcrum through measuring the vibration acceleration and the displacement, and controls the hydraulic rod to move in a feedback mode to find the most appropriate fulcrum position with the minimum vibration, thereby avoiding the damage of violent vibration to equipment.
Drawings
FIG. 1: front view of the inventive support device
FIG. 2: left side view of the inventive support device
FIG. 3: top view of the inventive support device
FIG. 4: section A-A in FIG. 3
FIG. 5: principle of fulcrum position adjustment
The attached drawings are marked as follows: 1. the device comprises a support rod mounting cover plate, 2 cam followers, 3 support rod mounting bottom plates, 4 support rods, 5 crossbeam guide roller support frames, 6 vibration acceleration sensors, 7 displacement sensors, 8 base crossbeams, 9 vertical air springs, 10 center frame guide plate seats, 11 center frame guide plates, 12 support seat limiting plates, 13 brake blocks, 14 support rod guide rollers, 15 roller support connecting beams, 16 fixed crossbeams, 17 crossbeam guide rollers, 18 lifting ring screws, 19 hydraulic moving devices and 20 transverse air springs.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
referring to fig. 1 to 4, two groups of fulcrum position adjusting devices for a full-size pipeline resonance bending fatigue testing machine are arranged and are respectively arranged on two sides of a pipeline. Each group of adjusting devices consists of two parts, wherein one part provides fulcrum displacement and is called a fulcrum moving part, and the other part provides fulcrum supporting and clamping and is called a supporting and clamping part.
The supporting and clamping part comprises a supporting frame, a pipeline supporting plate, a supporting rod 4, a vertical air spring 9, a transverse air spring 20, a beam guide roller 17, a supporting rod guide roller 14, a brake block 13, a vibration acceleration sensor 6, a displacement sensor 7, a center frame guide plate 11, a cam follower 2, a supporting seat limiting plate 12, a lifting bolt 18 and a beam guide roller supporting frame 5.
The support frame includes base crossbeam 8 and sets up the centre frame deflector seat 10 of 8 both sides of base crossbeam is in order to form U type installing port, the pipeline backup pad sets up in the U type installing port. The base crossbeam 8 is installed on the resonance bending fatigue testing machine base, crossbeam guide roller support frame 5 is equipped with through the pin joint in the both sides of base crossbeam 8, crossbeam guide roller 17 is equipped with on the crossbeam guide roller support frame 5. The center frame guide plate seat 10 is provided with a support seat limiting plate 12 and a lifting bolt 18, the support seat limiting plate 12 is used for limiting the pipeline support plate to move along the axial direction of the pipeline, and the lifting bolt 18 is used for lifting the adjusting device.
The pipeline supporting plate comprises a supporting rod mounting cover plate 1 with a semicircular groove in the lower portion and a supporting rod mounting base plate 3 with a semicircular groove in the upper portion, the semicircular groove of the supporting rod mounting cover plate 1 and the semicircular groove of the supporting rod mounting base plate 3 are oppositely connected to form the pipeline mounting hole, and the supporting rod mounting cover plate 1 and the supporting rod mounting base plate 3 are locked through bolts. The stay bars 4 are connected to the pipe support plates, each stay bar 4 is arranged in a radial direction of the pipe installation hole, and the plurality of stay bars 4 are arranged at intervals in a circumferential direction of the pipe installation hole. Every vaulting pole 4 orientation the interior tip at pipeline mounting hole center all stretch into in the pipeline mounting hole in order to be used for fixed pipeline, establish the connection in vaulting pole installation apron 1 vaulting pole 4 is last vaulting pole, go up the vaulting pole pass through the bolt with vaulting pole installation apron 1 is connected, and, go up set up on the vaulting pole with bolt matched with U type groove, the bolt is worn to establish U type inslot and can move in U type inslot, thereby make go up the vaulting pole can be radial movement at this radial position of vaulting pole place to the length that should go up the vaulting pole stretch into in order to be suitable for the pipeline of different pipe diameters. The stay bar 4 is a lower stay bar which is arranged on the stay bar mounting bottom plate 3 and fixed on the stay bar mounting bottom plate 3 through a bolt. The inner end part of each support rod 4 is provided with a support rod guide roller 14, and the support rod guide roller 14 is in contact with the pipeline and can roll on the pipeline so as to adjust the position of the support clamping part on the pipeline; the supporting rod guide roller 14 is provided with a brake block 13 used for locking the supporting rod guide roller 14, when the position of a fulcrum needs to be adjusted, the brake block 13 is opened, the supporting clamping part is moved, the supporting rod guide roller 14 rolls on a pipeline during moving, and when the supporting clamping part is moved in place, the brake block 13 is locked. And a vibration acceleration sensor 6 and a displacement sensor 7 are arranged on the support rod mounting base plate 3 and are used for measuring the vibration acceleration of the supporting point and the position of the supporting point.
The vertical air spring 9 is arranged between the strut mounting base plate 3 and the base cross beam 8 to provide vertical flexible support; the transverse air spring 20 is arranged between the strut mounting base plate 3 and the center frame guide plate seat 10 to provide transverse flexible support, and the vertical air spring 9 and the transverse air spring 20 can provide vertical and horizontal movement when the pipeline starts to vibrate so as to reduce vibration of the support position. Two vertical air springs 9 are arranged, and two sides of each vertical air spring 9 are respectively fixed on the strut mounting bottom plate 3 and the base cross beam 8 through bolts. One side of the transverse air spring 20 is fixed on the center frame guide plate seat 10 through a bolt, and the other side is connected with a center frame guide plate 11 through a bolt, if the center frame guide plate 11 directly contacts with the stay bar mounting base plate 3, in a vibration process, sliding friction is generated between the center frame guide plate 11 and the stay bar mounting base plate 3, so that the center frame guide plate 11 and the stay bar mounting base plate 3 are abraded, in order to reduce abrasion, cam followers 2 are arranged on two sides of the stay bar mounting base plate 3, the cam followers 2 contact with the center frame guide plate 11 and can roll on the center frame guide plate 11, and the sliding friction is converted into rolling friction.
The fulcrum moving part is used for realizing the movement of the supporting and clamping part along the axial direction of the pipeline so as to adjust the position of the supporting and clamping part on the pipeline (the position of the supporting and clamping part on the pipeline is the fulcrum position). The fulcrum moving portion includes a fixed frame and a hydraulic moving device 19. The fixed frame comprises two fixed cross beams 16 arranged at intervals and roller support connecting beams 15 erected on the two fixed cross beams 16 and fixedly connected with the fixed cross beams 16 through bolts, and the fixed cross beams 16 are fixed on a base of the resonance bending fatigue testing machine through bolts. Hydraulic pressure mobile device 19 includes pneumatic cylinder and the telescopic hydraulic stem, thereby the telescopic motion that can do with pipeline axial direction parallel under the effect of hydraulic oil is adjusted to the hydraulic stem support the position of clamping part on the pipeline, the tip of pneumatic cylinder articulates on fulcrum moving part's mount, the tip of hydraulic stem articulates support on clamping part's the support frame, wherein, articulated connection structure adopts two ear seats and rotation axis, two ear seats are fixed on the bottom surface of fulcrum moving part's gyro wheel support tie-beam 15 or support on clamping part's the base crossbeam 8, the rotation axis is connected two ear seats with the pneumatic cylinder or the hydraulic stem.
During working, the fixed end of the hydraulic moving device 19 is connected with the fixed cross beam 16, the supporting and clamping part moves along the axial direction of the pipeline by pushing of a hydraulic rod, a cross beam guide wheel is arranged on a base cross beam 8 of the supporting and clamping part and used for moving axially on a testing machine, vibration acceleration and displacement are measured in the test vibration process, and when vibration is severe, the hydraulic moving device 19 is controlled in a feedback mode to adjust the position of a fulcrum.
As shown in fig. 5, the fulcrum adjustment control method is to monitor the pressure of the air spring and control the stiffness of the air spring at the position of the fulcrum by aiming at steel pipes with different sizes; meanwhile, the vibration process monitors the vibration acceleration of the fulcrum, judges whether the acceleration is smaller than a required allowable value delta or not, and if the acceleration is larger than the allowable value, the position of the fulcrum needs to be adjusted through the hydraulic moving device 19 until the requirement of the vibration acceleration is met.
The fulcrum adjusting method is characterized in that the vibration acceleration of the fulcrum position is monitored to control, and meanwhile, according to different pipeline sizes, the rigidity of the air springs (including the vertical air spring 9 and the transverse air spring 20) is also required to be adjusted through tire pressure. If the influence of the volume change of the air spring caused by deformation and the effective area change rate of the air spring on the rigidity of the air spring is not considered, the vertical rigidity K of the air spring is as follows:
in the formula, m is a gas polytropic index, m is 1 in an isothermal process, m is 1.4 in an adiabatic process, and m is 1.4; p is the absolute pressure of the charge gas; a is the effective area of the air spring bearing load; v1Is the volume of air in the air spring.
The vibration isolation efficiency eta of the air spring is calculated to be (1-a1/a 2)% to evaluate whether the rigidity of the air spring meets the requirement or not through a vibration acceleration measured value a1 of the pipeline supporting plate at the fulcrum position and a measured value a2 of the base acceleration of the pipeline resonance bending fatigue testing machine, 95% of the vibration isolation efficiency eta is taken as meeting the requirement, and if the vibration isolation efficiency does not meet the requirement, air pressure needs to be supplemented, so that the vibration isolation efficiency is improved.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (9)
1. The fulcrum position adjusting device for the full-size pipeline resonance bending fatigue testing machine is characterized in that two groups of adjusting devices are arranged and are respectively arranged on two sides of a pipeline, each group of adjusting device comprises a supporting and clamping part and a fulcrum moving part, and the fulcrum moving part is used for realizing the axial movement of the supporting and clamping part along the pipeline so as to adjust the position of the supporting and clamping part on the pipeline;
wherein the support clamping portion includes:
the pipeline supporting plate comprises a supporting rod mounting cover plate (1) with a semicircular groove at the lower part and a supporting rod mounting base plate (3) with a semicircular groove at the upper part, wherein the semicircular groove of the supporting rod mounting cover plate (1) is oppositely connected with the semicircular groove of the supporting rod mounting base plate (3) to form the pipeline mounting hole;
a plurality of stay bars (4) connected to the pipe support plate, each of the stay bars (4) being arranged in a radial direction of the pipe installation hole, and the plurality of stay bars (4) being arranged at intervals in a circumferential direction of the pipe installation hole; the inner end part of each stay bar (4) facing the center of the pipeline mounting hole extends into the pipeline mounting hole to be used for fixing a pipeline, wherein the stay bar (4) connected to the stay bar mounting cover plate (1) can move radially at the radial position of the stay bar (4) so as to adjust the length of the stay bar extending into the pipeline mounting hole to adapt to pipelines with different pipe diameters;
the supporting frame comprises a base cross beam (8) and center frame guide plate seats (10) arranged on two sides of the base cross beam (8) to form a U-shaped mounting opening, and the pipeline supporting plate is arranged in the U-shaped mounting opening; and
the air spring support comprises a vertical air spring (9) and a transverse air spring (20), wherein the vertical air spring (9) is arranged between the strut mounting base plate (3) and the base cross beam (8) to provide vertical flexible support, and the transverse air spring (20) is arranged between the strut mounting base plate (3) and the center frame guide plate seat (10) to provide transverse flexible support.
2. The fulcrum position adjusting device for the full-size pipeline resonance bending fatigue testing machine according to claim 1, wherein the fulcrum moving part comprises a fixed frame and a hydraulic moving device (19), wherein the hydraulic moving device (19) comprises a hydraulic cylinder and a telescopic hydraulic rod, the hydraulic rod can perform telescopic motion parallel to the axial direction of the pipeline under the action of hydraulic oil so as to adjust the position of the supporting and clamping part on the pipeline, the end of the hydraulic cylinder is hinged on the fixed frame of the fulcrum moving part, and the end of the hydraulic rod is hinged on the supporting frame of the supporting and clamping part.
3. The fulcrum position adjusting device for the full-scale pipeline resonance bending fatigue testing machine according to claim 1, wherein the fulcrum moving part is fixed on a resonance bending fatigue testing machine base, and a beam guide roller (17) is arranged at the bottom of a support frame of the support clamping part.
4. The fulcrum position adjusting device for the full-size pipeline resonance bending fatigue testing machine according to claim 1, wherein the stay bar (4) connected to the stay bar mounting cover plate (1) is an upper stay bar, the upper stay bar is connected to the stay bar mounting cover plate (1) through a bolt, a U-shaped groove matched with the bolt is formed in the upper stay bar, and the bolt is inserted into the U-shaped groove and can move in the U-shaped groove, so that the upper stay bar can move radially at the radial position of the upper stay bar.
5. The fulcrum position adjusting device for the full-scale pipe resonance bending fatigue testing machine according to claim 1, wherein the inner end of each of the struts (4) is provided with a strut guide roller (14), and the strut guide roller (14) is in contact with the pipe and can roll on the pipe so as to adjust the position of the support clamping portion on the pipe; and a brake block (13) used for locking the support rod guide roller (14) is arranged on the support rod guide roller (14).
6. The fulcrum position adjusting device for the full-scale pipeline resonance bending fatigue testing machine according to claim 1, wherein a vibration acceleration sensor (6) and a displacement sensor (7) are arranged on the strut mounting base plate (3).
7. The full-scale fulcrum position adjusting device for the pipeline resonance bending fatigue testing machine according to claim 1, wherein a center frame guide plate (11) is connected to one side of the transverse air spring (20) close to the strut mounting base plate (3), cam followers (2) are arranged on two sides of the strut mounting base plate (3), and the cam followers (2) are in contact with the center frame guide plate (11) and can roll on the center frame guide plate (11).
8. The fulcrum position adjusting device for the full-scale pipeline resonance bending fatigue testing machine according to claim 1, wherein a supporting seat limiting plate (12) is arranged on the center frame guide plate seat (10) and used for limiting the pipeline supporting plate to move along the axial direction of the pipeline.
9. The fulcrum position adjusting device for the full-scale pipeline resonance bending fatigue testing machine according to claim 1, wherein a lifting eye screw (18) is arranged on the center frame guide plate seat (10) and used for hoisting the adjusting device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111144578.0A CN113899617A (en) | 2021-09-28 | 2021-09-28 | Fulcrum position adjusting device for full-size pipeline resonance bending fatigue testing machine |
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| CN202111144578.0A CN113899617A (en) | 2021-09-28 | 2021-09-28 | Fulcrum position adjusting device for full-size pipeline resonance bending fatigue testing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114994288A (en) * | 2022-06-01 | 2022-09-02 | 重庆科技学院 | Comprehensive experiment system for preventing and controlling generation of oil and gas pipeline hydrate |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202562796U (en) * | 2012-05-16 | 2012-11-28 | 杭州欧佩亚海洋工程有限公司 | Resonance bending type fatigue testing machine |
| US20160061688A1 (en) * | 2013-04-03 | 2016-03-03 | Onderzoekscentrum Voor Aanwending Van Staal N.V. | Fatigue testing of a test specimen |
| CN107389470A (en) * | 2017-08-09 | 2017-11-24 | 中国石油天然气集团公司 | A kind of full-scale rotary bending fatigue test device and method of oil well pipe |
| CN108362586A (en) * | 2018-03-01 | 2018-08-03 | 吉林大学 | Resonate fatigue bending machine |
| CN110174226A (en) * | 2019-06-17 | 2019-08-27 | 中机试验装备股份有限公司 | A kind of pipeline resonance fatigue test board |
| CN110595763A (en) * | 2019-09-12 | 2019-12-20 | 中国北方车辆研究所 | Vibration test device for single-input double-output transmission main shaft system |
| CN211013481U (en) * | 2019-12-06 | 2020-07-14 | 苏州热工研究院有限公司 | Pipeline vibration fatigue performance test bench based on resonance principle |
| CN212964422U (en) * | 2020-08-27 | 2021-04-13 | 中国石油天然气集团公司 | Pipeline fatigue test device |
| CN113138115A (en) * | 2020-01-17 | 2021-07-20 | 天津益普科技发展有限公司 | Full-size marine pipeline resonance rotary bending fatigue testing machine |
| CN113155420A (en) * | 2020-01-17 | 2021-07-23 | 天津益普科技发展有限公司 | Flexible support adjusting device for resonance rotation bending fatigue testing machine |
-
2021
- 2021-09-28 CN CN202111144578.0A patent/CN113899617A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202562796U (en) * | 2012-05-16 | 2012-11-28 | 杭州欧佩亚海洋工程有限公司 | Resonance bending type fatigue testing machine |
| US20160061688A1 (en) * | 2013-04-03 | 2016-03-03 | Onderzoekscentrum Voor Aanwending Van Staal N.V. | Fatigue testing of a test specimen |
| CN107389470A (en) * | 2017-08-09 | 2017-11-24 | 中国石油天然气集团公司 | A kind of full-scale rotary bending fatigue test device and method of oil well pipe |
| CN108362586A (en) * | 2018-03-01 | 2018-08-03 | 吉林大学 | Resonate fatigue bending machine |
| CN110174226A (en) * | 2019-06-17 | 2019-08-27 | 中机试验装备股份有限公司 | A kind of pipeline resonance fatigue test board |
| CN110595763A (en) * | 2019-09-12 | 2019-12-20 | 中国北方车辆研究所 | Vibration test device for single-input double-output transmission main shaft system |
| CN211013481U (en) * | 2019-12-06 | 2020-07-14 | 苏州热工研究院有限公司 | Pipeline vibration fatigue performance test bench based on resonance principle |
| CN113138115A (en) * | 2020-01-17 | 2021-07-20 | 天津益普科技发展有限公司 | Full-size marine pipeline resonance rotary bending fatigue testing machine |
| CN113155420A (en) * | 2020-01-17 | 2021-07-23 | 天津益普科技发展有限公司 | Flexible support adjusting device for resonance rotation bending fatigue testing machine |
| CN212964422U (en) * | 2020-08-27 | 2021-04-13 | 中国石油天然气集团公司 | Pipeline fatigue test device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114994288A (en) * | 2022-06-01 | 2022-09-02 | 重庆科技学院 | Comprehensive experiment system for preventing and controlling generation of oil and gas pipeline hydrate |
| CN114994288B (en) * | 2022-06-01 | 2023-12-12 | 重庆科技学院 | Comprehensive experiment system for preventing and controlling hydrate formation of oil and gas pipeline |
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