CN203534894U - Complex load testing machine - Google Patents
Complex load testing machine Download PDFInfo
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- CN203534894U CN203534894U CN201320629244.7U CN201320629244U CN203534894U CN 203534894 U CN203534894 U CN 203534894U CN 201320629244 U CN201320629244 U CN 201320629244U CN 203534894 U CN203534894 U CN 203534894U
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Abstract
A complex load testing machine belongs to the technical field of pipeline testing. A main body of the testing machine comprises an axial force loading device, a bending moment loading device, an internal pressure loading device, a hydraulic system and a measurement control system. The testing machine can apply an axial load, a bending moment, internal pressure and the like to a steel pipe sample separately, and can also apply two or more combined loads simultaneously and simulate the real stress environment of an oil-gas delivery steel pipe; besides, the testing machine can perform static loading as well as low-frequency reciprocating loading. The testing machine adopts the electrohydraulic servo closed-loop measurement control system, can perform constant-speed test force control and constant-speed displacement control, and can switch control modes smoothly in the testing process. The testing machine automatically collects the data of loads, internal pressure, displacement, deformation and the like in the testing process, and automatically finishes recording and the like of testing data. The testing machine conforms to relevant national standards and industrial standards in structure, function, performance and the like, and has the advantages of good integrated performance, high control accuracy, good simulation effect, high reliability, simplicity in operation and the like.
Description
Technical field
The utility model relates to a kind of Complicated Loads testing machine, and it belongs to duct test technical field.
Background technology
In order to study load-bearing capacity and the failure mechanism of pipe-line under complicated loads, the ultimate bearing capacity of accurate evaluation pipeline, need to carry out full scale tests to steel pipe.Pipeline is not only subject to interior pressure effect under running status, is also subject to the supporting role of self gravitation and surrounding soil, the impact load that the axial force that the axial force that the temperature of pumped (conveying) medium causes, geology are subsided, landslide, seismic wave effect, fault movement cause and moment of flexure, weight effect cause, drag that free spanning submarine pipeline produces under wave and action of ocean current and lift etc.Under complex environment load action, the stress model of pipeline can be described as being subject to the situation of one or more compound actions in interior pressure, axial force and three kinds of loads of moment of flexure.The impact of the condition that is put to the test, current this full scale tests is mainly undertaken having loaded separately by corresponding testing machine, there is no one and can combine the pilot system that multi-state loads, restricted the failure mode under complicated loads such as permafrost region buried pipeline or deep water submarine pipeline and the research of failure mechanism.
Summary of the invention
In order to solve problems of the prior art, the utility model provides a kind of Complicated Loads testing machine, and this testing machine should have that integrated performance is good, control accuracy is high, simulate effect good, good reliability and the advantage such as operation is simpler.
The utility model solves the technical scheme that its technical matters adopts: a kind of Complicated Loads testing machine, comprise the main frame and the assembled hydraulic source that are arranged in melt pit, automatically controlled computing machine, sample transports dolly, interior pressure charger and Measurement and Control System, described main frame adopts one by four reaction frames, to connect respectively the framed structure that top fixed beam and base form, an axial force charger and a moment of flexure charger, described axial force charger is arranged in described framed structure, moved cross beam adopts oil motor to be driven and relied on roller 14 along reaction frame lifting by four leading screws, moved cross beam below connects 6000KN sensor successively, upper ball pivot and upper bent beam, described base top arranges the mount pad of four leading screws and oil motor, on mount pad, connect successively 6000KN hydraulic cylinder, guide piece, lower end hinged-support and lower bent beam, described moment of flexure charger is arranged between bent beam and the cantilever end of lower bent beam, from upper bent beam to lower bent beam, connects successively 1000KN sensor, 1000KN curved cylinder and connecting link, at the trial, sample on guide rail transports dolly sample is transported between upper bent beam and lower bent beam, with oil motor, by driving-chain, sprocket wheel, four leading screws, drive moved cross beam lifting successively, compress or unclamp sample, by 6000KN hydraulic cylinder, sample is axially loaded, by curved cylinder, sample carried out moment of flexure loading or by interior pressure charger, sample carried out to interior pressure loading, adopt Measurement and Control System to measure each loading condition.
Described 6000KN hydraulic cylinder is provided with hydraulic cylinder LVDT sensor, and described sample is provided with horizontal amount of deflection sensor.
Described curved cylinder is provided with curved cylinder LVDT sensor.
The cantilever end of described upper bent beam is provided with bent beam obliquity sensor, and the cantilever end of described lower bent beam is provided with lower bent beam obliquity sensor.
The below of described lower bent beam cantilever end is provided with lower bent beam jacking apparatus.
The beneficial effects of the utility model are: the main frame of this Complicated Loads testing machine comprises axial force charger, moment of flexure charger, interior pressure charger, hydraulic system and Measurement and Control System etc.Can apply separately axially to steel pipe sample (compression/stretching) load, moment of flexure and interior pressure etc., also can apply two or more connected load, the true force environment of simulation oil gas conveying steel pipe simultaneously.Can carry out static loading, also can carry out low frequency and back and forth load.This machine adopts electro-hydraulic servo closed-loop measuring control system, can carry out constant speed test force (stress), constant speed displacement control, and in process of the test, control mode can steadily be switched.The automatic data collection such as load, interior pressure, displacement, distortion in process of the test, Real time vision trial curve also completes record, the storage of test figure automatically, can print experimental report by related standards.This testing machine structure, function, performance etc. meet the countries concerned's standard and industry standard.Have that integrated performance is good, control accuracy is high, simulate effect good, good reliability and the advantage such as operation is simpler.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the utility model is described in further detail.
Fig. 1 is Complicated Loads testing machine general arrangement.
Fig. 2 is the structural front view of Complicated Loads testing machine main frame.
Fig. 3 is the structure vertical view of Complicated Loads testing machine main frame.
In figure: 1, main frame, 2, automatically controlled computing machine, 3, sample transports dolly, 4, sample, 5, guide rail, 6, assembled hydraulic source, 7, interior pressure charger, 8, melt pit, 9, reaction frame, 10, leading screw, 11, beam locking device, 12, top fixed beam, 13, moved cross beam, 14, roller, 15, promote engineering oil cylinder, 16, 6000KN sensor, 17, upper ball pivot, 18, upper bent beam pulling apparatus, 19, upper bent beam obliquity sensor, 20, upper bent beam, 21, 1000KN sensor, 22, 1000KN curved cylinder, 23, curved cylinder LVDT sensor, 24, connecting link, 25, lower bent beam obliquity sensor, 26, lower bent beam, 27, 6000KN hydraulic cylinder, 27a, mount pad, 28, lower bent beam jacking apparatus, 29, base, 30, foot bolt, 31, hydraulic cylinder LVDT sensor, 32, guide piece, 33, lower end hinged-support, 34, horizontal amount of deflection sensor, 35, oil motor, 36, driving-chain, 37, sprocket wheel.
Embodiment
Fig. 1,2 shows a kind of structural drawing of Complicated Loads testing machine.In figure, Complicated Loads testing machine comprises that the main frame 1 and assembled hydraulic source 6, automatically controlled computing machine 2, the sample that are arranged in melt pit 8 transport dolly 3, interior pressure charger 7 and Measurement and Control System.Main frame adopts one by four reaction frames 9, to connect respectively framed structure, an axial force charger and the moment of flexure charger that top fixed beam 12 and base 29 form.
Axial force charger is arranged in described framed structure, moved cross beam 13 adopts oil motor 35 to be driven and relied on roller 14 along reaction frame 9 liftings by four leading screws 10, and moved cross beam 13 belows connect 6000KN sensor 16, upper ball pivot 17 and upper bent beam 20 successively.Base 29 tops arrange the mount pad of four leading screws 10 and oil motor 35, connect successively 6000KN hydraulic cylinder 27, guide piece 32, lower end hinged-support 33 and lower bent beam 26 on mount pad.6000KN hydraulic cylinder 27 is provided with hydraulic cylinder LVDT sensor 31, and sample 4 is provided with horizontal amount of deflection sensor 34.
Moment of flexure charger is arranged between bent beam 20 and the cantilever end of lower bent beam 26, from upper bent beam 20 to lower bent beam 26, connects successively 1000KN sensor 21,1000KN curved cylinder 22 and connecting link 24.1000KN curved cylinder 22 is provided with curved cylinder LVDT sensor 23.The cantilever end of upper bent beam 20 is provided with bent beam obliquity sensor 19, and the cantilever end of described lower bent beam 26 is provided with lower bent beam obliquity sensor 25.The below of lower bent beam 26 cantilever ends is provided with lower bent beam jacking apparatus 28.
At the trial, sample on guide rail 5 transports dolly 3 sample 4 is transported between upper bent beam 20 and lower bent beam 26, with oil motor 35, by driving-chain 36, sprocket wheel 37, four leading screws 10, drive moved cross beam 13 liftings successively, compress or unclamp sample 4, by 27 pairs of samples 4 of 6000KN hydraulic cylinder, axially load, by 22 pairs of samples of curved cylinder 4, carry out moment of flexure loading or carry out interior pressure loading by 7 pairs of samples of interior pressure charger 4, adopt Measurement and Control System to measure each loading condition.
Adopt above-mentioned technical scheme, with ten hole button rows, control beam lifting motor and drive moving up and down of moved cross beam 13, with promoting engineering oil cylinder 15, through upper bent beam pulling apparatus 18, control upper bent beam 20 levels, and with five hole button rows, drive lower bent beam jacking apparatus 28 to adjust lower bent beam 26 levels simultaneously.
Interior pressure charger 7 comprises steel pipe water filling, drainage arrangement and supercharging device.Its supercharging device is a set of stainless steel pressurized cylinder being driven by servo-cylinder, adopts the U.S. D634 of MOOG company servo-valve to control.
Hydraulic system comprises assembled hydraulic source 6, oil dispenser and pipeline, and cooling system etc.Its hydraulic power source is designed to 60L/min+90L/min unitized construction, and two oil pumps share fuel tanks, shares a set of regulator, but can independent startup and stop.Hydraulic power source has been installed high-level efficiency water-cooled oil cooling machine simultaneously, adopts circulating water.In laboratory, build a cistern or water tank, by water circulating pump, realize current between cistern and heat exchanger and exchange.For further strengthening cooling effect, experiment outdoor mounted a set of cooling tower.
Measurement and Control System comprises test force, displacement, deformation measuring device, data acquisition process unit and triple channel Digital Electro-hydraulic Servo control Coordinated Loading System.The public a set of servocontrol passage of two cover moment of flexure oil cylinders, is used when different, by changing oil pipe, realizes and switching with the method for changing sensor plug.4 cover oil cylinders are selected LVDT displacement transducer and power sensor, all can carry out displacement control and load pressure and control, and between control mode, can take over seamlessly.Except the sensor, on testing machine, also prepared deformation measurement sensor, comprise the horizontal amount of deflection sensor 34 of steel pipe, upper bent beam obliquity sensor 19 and lower bent beam obliquity sensor 25.Sensor signal is transferred to data acquisition unit, after amplifying, changing, is sent in automatically controlled computing machine 2, and computer screen shows test parameters and various curve in real time.
Servicing unit comprises that sample transports dolly 3, guide rail 5, cross-rail-elevating mechanism, beam locking device 11, upper bent beam pulling apparatus 18, lower bent beam jacking apparatus 28, and safety device etc.Sample transports dolly 3 and adopts reducing motor to drive, and by ten hole button rows, is controlled and is moved forward and backward along guide rail 5, and sample 4 is moved to test site.For guaranteeing sample stability and handling safety, at sample, transport and on dolly 3, be provided with sample holder locating device.For ease of handling sample, and testing machine maintaining etc., with testing machine, be equipped with two hydraulic up-down platforms.
This testing machine complete machine has very high intensity and rigidity, is out of shape littlely in process of the test, can accurately complete the Ultimate Strength Test of pipeline under single load or Complicated Loads synergy, has guaranteed that under Complicated Loads condition, test accuracy reaches designing requirement.Have that integrated performance is good, control accuracy is high, simulate effect good, good reliability and the advantage such as operation is simpler.
The key technical indexes of this Complicated Loads static and dynamic test machine is as follows:
1, axial loading system
Maximum test force: press to 6000kN, pull to 2000kN
Pilot strength measurement range of control: 1～100%
Pilot strength measurement control accuracy: be better than ± 1%
Dynamometry mode: load transducer dynamometry
Test space: 0～3000mm(is high)
Piston effective travel: ± 150mm
Working piston ascending velocity: 0～100mm/min
Range of displacement measurement: 0～± 150mm
Displacement measurement precision: be better than ± 1%
2, moment of flexure loading system
Maximal bending moment: 2000kN.m
Moment of flexure metering system: load transducer power value * bent beam length
Bent beam effective length: 2000mm
Bent beam maximum rotation angle: ± 15 °
Bent beam outer corner measurement: obliquity sensor
Maximum test force: push 1000kN to, pull to 700kN
Pilot strength measurement range of control: 1～100%
Pilot strength measurement control accuracy: be better than ± 1%
Dynamometry mode: load transducer dynamometry
Throw of poston: 0～800mm
Range of displacement measurement: 0～800mm
Displacement measurement precision: be better than ± 1%
3, interior pressure loading system
Maximum internal pressure: 50MPa
Internal pressure measurement range of control: 1～100%
Internal pressure measurement control accuracy: be better than ± 1%
Internal pressure measurement mode: high precision strain pressure transducer
Pressurized cylinder piston stroke: 600mm
Range of displacement measurement: 0～600mm
Displacement measurement precision: be better than ± 1%.
Claims (5)
1. a Complicated Loads testing machine, comprise the main frame (1) and assembled hydraulic source (6) that are arranged in melt pit (8), automatically controlled computing machine (2), sample transports dolly (3), interior pressure charger (7) and Measurement and Control System, it is characterized in that: described main frame adopts one by four reaction frames (9), to connect respectively the framed structure that top fixed beam (12) and base (29) form, an axial force charger and a moment of flexure charger, described axial force charger is arranged in described framed structure, moved cross beam (13) adopts oil motor (35) to be driven and relied on roller (14) along reaction frame (9) lifting by four leading screws (10), moved cross beam (13) below connects 6000KN sensor (16) successively, upper ball pivot (17) and upper bent beam (20), described base (29) top arranges the mount pad (27a) of four leading screws (10) and oil motor (35), on mount pad (27a), connect successively 6000KN hydraulic cylinder (27), guide piece (32), lower end hinged-support (33) and lower bent beam (26), described moment of flexure charger is arranged between bent beam (20) and the cantilever end of lower bent beam (26), from upper bent beam (20) to lower bent beam (26), connects successively 1000KN sensor (21), 1000KN curved cylinder (22) and connecting link (24), at the trial, sample on guide rail (5) transports dolly (3) sample (4) is transported between upper bent beam (20) and lower bent beam (26), with oil motor (35), pass through successively driving-chain (36), sprocket wheel (37), four leading screws (10) drive moved cross beam (13) lifting, compress or unclamp sample (4), by 6000KN hydraulic cylinder (27), sample (4) is axially loaded, by 1000KN curved cylinder (22), sample (4) is carried out moment of flexure loading or by interior pressure charger (7), sample (4) carried out to interior pressure loading, adopt Measurement and Control System to measure each loading condition.
2. a kind of Complicated Loads testing machine according to claim 1, is characterized in that: described 6000KN hydraulic cylinder (27) is provided with hydraulic cylinder LVDT sensor (31), and described sample (4) is provided with horizontal amount of deflection sensor (34).
3. a kind of Complicated Loads testing machine according to claim 1, is characterized in that: described 1000KN curved cylinder (22) is provided with curved cylinder LVDT sensor (23).
4. a kind of Complicated Loads testing machine according to claim 1, it is characterized in that: the cantilever end of described upper bent beam (20) is provided with bent beam obliquity sensor (19), the cantilever end of described lower bent beam (26) is provided with lower bent beam obliquity sensor (25).
5. a kind of Complicated Loads testing machine according to claim 1, is characterized in that: the below of described lower bent beam (26) cantilever end is provided with lower bent beam jacking apparatus (28).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320629244.7U CN203534894U (en) | 2013-10-13 | 2013-10-13 | Complex load testing machine |
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| CN201320629244.7U CN203534894U (en) | 2013-10-13 | 2013-10-13 | Complex load testing machine |
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| CN203534894U true CN203534894U (en) | 2014-04-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499487A (en) * | 2013-10-13 | 2014-01-08 | 大连理工大学 | Complex load tester |
| CN113654914A (en) * | 2021-07-30 | 2021-11-16 | 中国航空工业集团公司济南特种结构研究所 | Method for testing bending performance and low dispersibility of composite material |
-
2013
- 2013-10-13 CN CN201320629244.7U patent/CN203534894U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499487A (en) * | 2013-10-13 | 2014-01-08 | 大连理工大学 | Complex load tester |
| CN103499487B (en) * | 2013-10-13 | 2015-07-15 | 大连理工大学 | Complex load tester |
| CN113654914A (en) * | 2021-07-30 | 2021-11-16 | 中国航空工业集团公司济南特种结构研究所 | Method for testing bending performance and low dispersibility of composite material |
| CN113654914B (en) * | 2021-07-30 | 2024-04-09 | 中国航空工业集团公司济南特种结构研究所 | Method for testing bending property and low dispersibility of composite material |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140409 Effective date of abandoning: 20150715 |
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| RGAV | Abandon patent right to avoid regrant |