CN109612856B - Hydraulic steel pipe detection device - Google Patents
Hydraulic steel pipe detection device Download PDFInfo
- Publication number
- CN109612856B CN109612856B CN201811523460.7A CN201811523460A CN109612856B CN 109612856 B CN109612856 B CN 109612856B CN 201811523460 A CN201811523460 A CN 201811523460A CN 109612856 B CN109612856 B CN 109612856B
- Authority
- CN
- China
- Prior art keywords
- screw rod
- turntable
- steel pipe
- driving motor
- sliding rail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 25
- 239000010959 steel Substances 0.000 title claims abstract description 25
- 238000001514 detection method Methods 0.000 title claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000007689 inspection Methods 0.000 claims 2
- 238000012360 testing method Methods 0.000 abstract description 19
- 238000006073 displacement reaction Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
-
- 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
-
- 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
-
- 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
- G01N2203/0021—Torsional
-
- 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
-
- 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
-
- 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
-
- 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A hydraulic steel pipe detection device relates to the field of hydraulic steel pipe detection. The testing machine comprises a servo motor, wherein the servo motor rotates to drive an eccentric turntable to rotate, the eccentric displacement of the turntable is regulated by utilizing the cooperation of two motors of an offset regulation driving motor and a screw driving motor, and the strain generated by the offset displacement of a tested piece is controlled, so that the measurement error caused by factors such as different sizes and uneven materials of the tested piece can be reduced. Meanwhile, a dynamic torque sensor and a rotating speed sensor are utilized to record and monitor the torque change of the whole transmission system in the test process, so that the equipment can automatically stop when the torque value exceeds an alarm threshold no matter the influence of a spherical bearing or a transmission shaft, and the uncertainty brought by a test system is greatly reduced.
Description
Technical Field
The invention relates to the field of hydraulic steel pipe detection, in particular to a hydraulic steel pipe detection device.
Background
In aerospace engineering or nuclear power engineering, the bending torsion fatigue performance of the hydraulic steel pipe and the components influences the reliability and the safety of the whole system, deflection displacement is mostly calculated to serve as a test parameter in the conventional fatigue performance detection, but the accuracy of the test is influenced by interference factors such as different material performances, uneven materials, size deviation and the like; meanwhile, the increase of torque caused by the failure of vulnerable parts of the test system in the test process also has an influence on the service life of the test piece. In summary, the current joint and steel pipe bending life tester is characterized in that: only single displacement control can be realized, the control displacement is accurate and low, and the detection result is generally greatly different from the theoretical value.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a hydraulic steel pipe detection device.
The technical scheme adopted by the invention is as follows: the hydraulic steel pipe detection device comprises a base frame, a lower platform connected with the base frame, and an upper platform connected with the lower platform through a stand column, and is technically characterized by further comprising a servo motor which is fixedly connected to the base frame; the eccentric turntable is connected with an output shaft of the servo motor, a torque and rotation angle sensor is also connected to the output shaft of the eccentric turntable, a screw rod fixing sliding rail is arranged on the eccentric turntable, a turntable driving screw rod is connected to the screw rod fixing sliding rail, and a spherical center bearing is connected to the turntable driving screw rod; the gap steel block is arranged in the spherical center bearing and is used for being connected with one end of a tested piece; the offset adjusting driving motor is connected with a detachable shaft, and the detachable shaft is connected with a turntable driving screw rod positioned on the eccentric turntable and drives the turntable driving screw rod to rotate; the horizontal sliding rail is arranged on the surface of the lower platform, and the offset adjusting driving motor is arranged on the horizontal sliding rail; the screw rod driving motor is connected with the screw rod, and a nut on the screw rod is connected with the horizontal sliding rail;
the lower end locking piece is connected with the pressurizing connector and is fixed on the upper platform; the upper end locking piece is arranged on the upper platform and matched with the lower end locking piece to fix the other end of the tested piece; the pneumatic hydraulic pump is connected with the pressurizing connector through a hydraulic transmission pipe.
Preferably, a shockproof washer is further arranged at the connecting part of the upper end locking piece and the lower end locking piece.
Preferably, a strain gauge is further arranged at the other end of the tested piece close to the upper locking piece.
The beneficial effects of the invention are as follows: a turn round life-span testing machine for monitoring hydraulic pressure steel pipe rotation state, including servo motor rotation drive eccentric carousel rotation, utilize offset adjustment driving motor to utilize two motor cooperations of offset adjustment driving motor and lead screw driving motor to adjust carousel eccentric displacement, can reduce the measuring error that brings because the measured piece size is different, material inhomogeneous etc. factor. Meanwhile, a dynamic torque and rotating speed sensor is utilized to record and monitor the torque change of the hydraulic steel pipe in the test process, whether the service life of the spherical bearing or the transmission shaft is influenced, the increase of the torque can be warned and prompted, and thus the uncertainty brought by a test system is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a bending life tester for monitoring the rotation state of a hydraulic steel pipe according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of FIG. 1A;
FIG. 3 is an enlarged schematic view of the B-direction of FIG. 1;
the numbers in the figures are illustrated as follows: the device comprises a base frame 1, a pneumatic hydraulic pump 2, a servo motor 3, a torque and rotation angle sensor 4, a lower platform 5, a transmission shaft 6, an eccentric turntable 7, a turntable driving screw 8, a screw fixing sliding rail 9, a spherical center bearing 10, a gap steel block 11, a detachable shaft 12, a screw 13, a screw driving motor 14, a horizontal sliding rail 15, a bias adjustment driving motor 16, a tested piece 17, a strain gauge 18, a lower end locking piece 19, an upper platform 20, an upper end locking piece 21, a shockproof gasket 22, a stand column 23, a hydraulic transmission pipe 24 and a control and acquisition computer 25.
Detailed Description
The foregoing objects, features, and advantages of the invention will be more readily apparent from the following detailed description of the invention taken in conjunction with the accompanying drawings, figures 1-3, and detailed description of the invention.
The bending life testing machine for monitoring the rotation state of a hydraulic steel pipe in the embodiment comprises a base frame 1, a lower platform 5 connected with the base frame 1, an upper platform 20 connected with the lower platform 5 through a stand column 23, a servo motor 3, a transmission shaft 6, an eccentric rotary table 7, a rotary table driving screw 8, a screw fixing slide rail 9, a spherical center bearing 10, a gap steel block 11, a detachable shaft 12, a screw 13, a screw driving motor 14, a horizontal slide rail 15, an offset adjusting driving motor 16, a lower end locking piece 19 and an upper end locking piece 21. The servo motor 3 is fixedly connected to the base frame 1, an output shaft of the servo motor 3 is connected with the eccentric rotary table 7, and the output shaft of the eccentric rotary table 7 connected with the servo motor 3 is also connected with the torque and rotation angle sensor 4. A screw rod fixing sliding rail 9 is arranged on the eccentric turntable 7, a turntable driving screw rod 8 is connected to the screw rod fixing sliding rail 9, and a spherical center bearing 10 is connected to the turntable driving screw rod 8; a gap steel block 11 is arranged in the spherical center bearing 10, and the end-capped end of the tested piece 17 is connected with the gap steel block 11. The offset adjustment driving motor 16 is connected with the detachable shaft 12, and the detachable shaft 12 is connected with the turntable driving screw rod 8 positioned on the eccentric turntable 7 and drives the turntable driving screw rod 8 to rotate. The surface of the lower platform 5 is provided with a horizontal slide rail 15, a bias adjustment driving motor 16 is arranged on the horizontal slide rail 15, a screw rod driving motor 14 is connected with a screw rod 13, and a nut on the screw rod 13 is connected with the horizontal slide rail 15.
The lower locking member 19 in this embodiment is attached to a compression fitting and secured to the upper platform 20. The upper locking piece 21 is arranged on the upper platform 20 and matched with the lower locking piece 19 to fix the other end of the tested piece 19, and a strain gauge 18 is arranged at the joint close to the tested piece 19 and the upper locking piece 21. A shockproof washer 22 is also arranged at the connecting part of the upper end locking piece 21 and the tested piece 19. The pneumatic hydraulic pump 2 is provided on the base frame 1 and is connected to the pressurizing joint through a hydraulic transmission pipe 24.
The control and acquisition computer 25 is respectively connected with the servo motor 3, the screw driving motor 14, the offset adjusting driving motor 16 and the torque and rotation angle sensor 4.
The working process of the bending life testing machine for monitoring the rotation state of the hydraulic steel pipe in the embodiment is as follows:
first, the closed end of the test piece 17 is mounted in the gap steel block 11 located inside the spherical center bearing 10. A strain gauge 18 is attached to the other end of the test piece 17.
Secondly, the screw driving motor 14 rotates positively, the screw driving motor 14 drives the screw 13 to rotate, a nut positioned on the screw 13 drives the offset adjusting driving motor 16 to move on the horizontal sliding rail 15, the detachable shaft 12 is connected with the turntable driving screw 8, the offset adjusting driving motor 16 is started to drive the eccentric turntable screw to rotate, meanwhile, strain reading of the strain gauge 18 adhered to the tested piece 17 is observed, when the strain reading reaches a required value, the offset adjusting driving motor 16 is stopped, the screw driving motor 14 rotates reversely, the adjusting driving motor 16 is driven to move in a direction far away from the turntable driving screw 8, and the detachable shaft 12 is separated from the turntable driving screw 8.
Finally, the pneumatic hydraulic pump 2 utilizes the hydraulic transmission pipe 24 to pressurize the tested test piece 17, meanwhile, controls and collects whether the pressure of the computer 25 is stable or not, and starts the servo motor 3 after the pressure is stable, the rotation speed is slowly increased to 3000r/min, the change of the indication values of the torque sensor and the pressure sensor during operation is observed, when the torque reaches the alarm value when the required rotation speed is not reached, the equipment is automatically stopped, the test piece and the system state are checked, if the torque is increased due to the tested piece 17, the rotation is continued, if the torque is increased due to the system accessory, the accessory is replaced, and if the tested piece leaks during the rotation, the tested piece is judged to be unqualified; and if the tested test piece does not leak after reaching the rotation times required by the standard, the test piece is considered to be qualified.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. The hydraulic steel pipe detection device comprises a base frame, a lower platform connected with the base frame, and an upper platform connected with the lower platform through a stand column, and is characterized by further comprising a servo motor which is fixedly connected to the base frame; the eccentric turntable is connected with an output shaft of the servo motor, a torque and rotation angle sensor is also connected to the output shaft of the eccentric turntable, a screw rod fixing sliding rail is arranged on the eccentric turntable, a turntable driving screw rod is connected to the screw rod fixing sliding rail, and a spherical center bearing is connected to the turntable driving screw rod; the gap steel block is arranged in the spherical center bearing and is used for being connected with one end of a tested piece; the offset adjusting driving motor is connected with a detachable shaft, and the detachable shaft is connected with a turntable driving screw rod positioned on the eccentric turntable and drives the turntable driving screw rod to rotate; the horizontal sliding rail is arranged on the surface of the lower platform, and the offset adjusting driving motor is arranged on the horizontal sliding rail; the screw rod driving motor is connected with the screw rod, and a nut on the screw rod is connected with the horizontal sliding rail;
the lower end locking piece is connected with the pressurizing connector and is fixed on the upper platform; the upper end locking piece is arranged on the upper platform and matched with the lower end locking piece to fix the other end of the tested piece; the pneumatic hydraulic pump is connected with the pressurizing connector through a hydraulic transmission pipe.
2. The hydraulic steel pipe inspection device according to claim 1, wherein a shock-proof washer is further provided at a connection portion of the upper end locking member and the lower end locking member.
3. The hydraulic steel pipe inspection device according to claim 1, wherein a strain gauge is further provided at the other end of the piece to be inspected in the vicinity of the upper end locking piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811523460.7A CN109612856B (en) | 2018-12-13 | 2018-12-13 | Hydraulic steel pipe detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811523460.7A CN109612856B (en) | 2018-12-13 | 2018-12-13 | Hydraulic steel pipe detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109612856A CN109612856A (en) | 2019-04-12 |
| CN109612856B true CN109612856B (en) | 2023-11-24 |
Family
ID=66008482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811523460.7A Active CN109612856B (en) | 2018-12-13 | 2018-12-13 | Hydraulic steel pipe detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109612856B (en) |
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|---|---|---|---|---|
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| CN109612856A (en) | 2019-04-12 |
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Effective date of registration: 20210127 Address after: 110043 No. 242 Beihai street, Dadong District, Liaoning, Shenyang Applicant after: Shenyang Guoyi Testing Technology Co.,Ltd. Address before: No.242 Beihai street, Dadong District, Shenyang, Liaoning, 110043 Applicant before: SHENYANG ACADEMY OF INSTRUMENTATION SCIENCE Co.,Ltd. |
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