CN108772211A - Geotechnical centrifuge dynamic equilibrium regulating system - Google Patents
Geotechnical centrifuge dynamic equilibrium regulating system Download PDFInfo
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- CN108772211A CN108772211A CN201810843902.XA CN201810843902A CN108772211A CN 108772211 A CN108772211 A CN 108772211A CN 201810843902 A CN201810843902 A CN 201810843902A CN 108772211 A CN108772211 A CN 108772211A
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- water tank
- geotechnical centrifuge
- dynamic equilibrium
- regulating system
- pivoted arm
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 163
- 238000009434 installation Methods 0.000 claims abstract description 15
- 239000011229 interlayer Substances 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 5
- 238000013461 design Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B15/00—Other accessories for centrifuges
-
- 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
Abstract
Include the high water tank for water storage in the bearing of geotechnical centrifuge pivoted arm the invention discloses geotechnical centrifuge dynamic equilibrium regulating system；The even number end water tank on two swivel arms is supported mounted on geotechnical centrifuge pivoted arm, the more pipelines for being connected to high water tank and end water tank on geotechnical centrifuge.The present invention by into end water tank water filling carry out trim, centrifugal field is big at distal tip water tank, and required trim water is small, therefore is greatly improved trim ability by limited time in installation space.And improved with centrifugal field g values, trim ability improves therewith；Dynamic equilibrium regulating system efficiently uses centrifugal force and the Gravitative Loads of water carry out water filling, without adding driving device, enormously simplifies system composition；Dynamic equilibrium regulating system is there is no the element that motor etc. is influenced stable work in work by centrifugal field in high centrifugation field areas, and system reliability higher is limited small by centrifugal field, and use scope is wider.
Description
Technical field
The invention belongs to geotechnical centrifuge dynamic equilibrium technical fields, and in particular to geotechnical centrifuge dynamic equilibrium adjusts system
System.
Background technology
Geotechnical centrifuge test model weight is generally very big, and far from spindle central.Under high centrifugal field, it is fraction of not
The influence balanced caused by quality all can be by the amplification at N times.And geotechnical model is complex-shaped, quality is soft uneven, is trying
Barycenter changes inevitable during testing.When especially doing dam-break experiments, the barycenter variation caused by model collapses on a large scale will
It can be very big.
And unbalance dynamic load is to influence the principal element of centrifugation machine vibration, less serious case reduces centrifuge smoothness of operation, adds
Fast moving component abrasion, shortens machine service life；Severe one makes bearing damage or rotating speed be difficult to reach design objective；What is more,
When unbalanced load is more than the design threshold values of support construction, it would be possible to cause main shaft fatigue fracture or even entire main machine structure
Danger of toppling.Therefore, in addition to the static trim before experiment, the quality of dynamic balancing regulating system design is to determine geotechnical centrifuge
One of key technology of quality of design.
Currently, the dynamic balancing regulative mode of geotechnical centrifuge mainly has following a few classes：
The first kind is to install clump weight on centrifuge pivoted arm, by motor or hydraulic system drive clump weight movement come
Balancedunbalanced load acts on.(the online dynamic equilibrium regulating mechanism of geotechnical centrifuge, the patent No.：201210112913.3)
Second class is to install water tank at pivoted arm both ends, and pivoted arm both ends are adjusted to push the water in water tank by high-pressure air source
Unbalance dynamic.(Sun Shu ancestral's geotechnical centrifuges Design Summaries (three), water conservancy water transport scientific research, 1991,9 (3))
Third class is to replace the clump weight in counterweight hanging basket with water tank.End is tested in centrifuge operation process to generate not
When equilibrant force, into water tank water filling come be balanced adjust.(Novel balance self-regulation system of geotechnical centrifuge, the patent No.：
201320405085.2)
The shortcomings that above-mentioned first kind balance adjustment mechanism is：Counterweight block size is larger, and installation space is limited；Trim ability has
Limit；System composition is complicated；System reliability is poor, is not suitable for and is used under high centrifugal field.
The reason of leading to disadvantages mentioned above is：Centrifuge pivoted arm inner space is limited, clump weight displacement distance and clump weight ruler
It is very little to there is larger limitation, so as to cause trim limited ability；Motor driving needs heavy-duty motor, lead screw and ensures to synchronize
Property mechanism etc., hydraulic-driven then needs motor, accumulator and corresponding matching component etc., and two kinds of type of drive compositions are more
It is complicated；Under high centrifugal field, the reliability of motor, the rigidity of lead screw cannot all be ensured very well, the pipe of hydraulic drive mechanism
Road, pipe seal performance hardly result in guarantee.
The shortcomings that above-mentioned second class balance adjustment mechanism is：Trim ability is limited, and system structure is complicated, be not suitable for it is high from
Psychological field.
The reason of leading to disadvantages mentioned above is：The moving mass of water tank internal water and apart from limited, leads to system trim ability
It is insufficient；Trimming system need to be equipped with the structures such as gas cylinder or air compressor machine, high voltage adjusting air valve, and system composition is complicated；Under high centrifugal field
Pipeline, valve air-tightness are not easy to ensure, and control element is under high centrifugal field, and system reliability is not high.
The shortcomings that above-mentioned third class balance adjustment mechanism is：Water tank space is limited, and dynamically balancing ability is low, can only carry out list
To trim.
The reason of leading to disadvantages mentioned above is：It is placed in counterweight hanging basket with water tank and replaces clump weight, it is quiet firstly the need of ensureing
Secondly trim ability could carry out dynamically balancing.And tank size is limited, and water density is small, matches as static state and has usually occupied
The big quantity space of water tank causes system dynamically balancing ability to be had a greatly reduced quality.Further, since it only is equipped with water tank in Balance weight end, therefore only
It can carry out unidirectional trim.
We has developed a kind of geotechnical centrifuge dynamic equilibrium regulating system in order to solve problem above.
Invention content
The purpose of the present invention is that solve the above-mentioned problems and provides a kind of geotechnical centrifuge dynamic equilibrium adjusting system
System.
The present invention is achieved through the following technical solutions above-mentioned purpose：
Geotechnical centrifuge dynamic equilibrium regulating system is mounted on geotechnical centrifuge and is adjusted for its dynamic balancing, dynamic
Balance-conditioning system includes：
The high water tank for water storage in the bearing of geotechnical centrifuge pivoted arm；
The even number end water tank on two swivel arms is supported mounted on geotechnical centrifuge pivoted arm, is located at pivoted arm bearing both sides
End water tank is symmetrically installed relative to the centre of gyration of geotechnical centrifuge, and the installation site of high water tank is higher than the peace of end water tank
Holding position；
The more pipelines for being connected to high water tank and end water tank on geotechnical centrifuge, the one of a pipeline
End is connected to high water tank, and the other end is connected to an end water tank；It is both provided on every pipeline for sending water open and close control
Servo valve and for water flow statistics flowmeter.
The installation site of high water tank is higher than the installation site of end water tank, can keep depositing between high water tank and end water tank
It is poor in certain altitude, convenient for discharging water to end water tank.
Specifically, each end water tank includes two semicolumn water tanks, and two semicolumn water tanks splice up and down, and will turn
Arm is clamped between two semicolumn water tanks, and the both ends of two semicolumn water tanks are separately fixed at two positioning of geotechnical centrifuge
On ring, locating ring is fixedly mounted in pull strap；Each semicolumn water tank is connected to by a pipeline with high water tank, every
Servo valve and flowmeter are both provided on pipeline.
End water tank is installed between two locating rings, by locating ring bear caused by end water tank and internal water from
Mental power function.
Preferably, centre of gyration installation of the end water tank far from geotechnical centrifuge；Servo valve and flowmeter close to geotechnique from
The centre of gyration of scheming is installed.
It avoids servo valve and flowmeter from generating excessive its working performance of centrifugal force function influence, ensures its reliability.
Specifically, it is provided with water tank mounting base in pivoted arm bearing, high water tank is mounted in water tank mounting base.
Each semicolumn water tank is connected to by a pipeline with the bottom end of high water tank.
Preferably, it is interlayer reinforced structure inside semicolumn water tank.
Because being subjected to greatly centrifuge force effect in high-g level lower half cylinder water tank, therefore, end waterbox design is at interlayer reinforcement
Structure ensures that water tank integrally has enough intensity requirements.
Preferably, the pivoted arm of geotechnical centrifuge is bicylindrical shape pulling force band structure, and end water tank is four, pivoted arm bearing
Per two end water tanks are arranged on swivel arm, two semicolumn water tanks of the same end water tank splice up and down, and by pivoted arm
One cylindrical pull strap is clamped between two semicolumn water tanks.
Preferably, the centre of gyration of geotechnical centrifuge is on the axial line of high water tank.
Avoidable high water tank, which is under high centrifugal field, bears larger centrifugation force effect.
The beneficial effects of the present invention are：
The geotechnical centrifuge dynamic equilibrium regulating system of the present invention：
1, by into end water tank water filling carry out trim, centrifugal field is big at distal tip water tank, and required trim water is small,
Therefore in installation space trim ability is greatly improved by limited time.And improved with centrifugal field g values, trim ability improves therewith.
2. dynamic equilibrium regulating system efficiently uses centrifugal force and the Gravitative Loads of water carry out water filling, without adding driving dress
It sets, enormously simplifies system composition.
3. there is no motor etc., to be influenced working performance by centrifugal field steady in height centrifugation field areas for dynamic equilibrium regulating system
Qualitative element, system reliability higher is limited small by centrifugal field, and use scope is wider.
Description of the drawings
Fig. 1 is the mounting structure schematic diagram of the present invention；
Fig. 2 is the structural schematic diagram of the present invention；
Fig. 3 is the structural schematic diagram of medial end portions water tank of the present invention.
In figure：1, pivoted arm supports；2, water tank mounting base；3, dynamic equilibrium regulating system；31, high water tank；32, servo
Valve；33, flowmeter；34, pipeline；35, end water tank；4, locating ring；5, pull strap；6, counterweight hanging basket；7, hanging basket is tested；8, turn
Arm.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings：
As Figure 1-Figure 2, geotechnical centrifuge dynamic equilibrium regulating system 3 is mounted on geotechnical centrifuge and is used for it
Dynamic balancing is adjusted, and dynamic equilibrium regulating system 3 includes：The high position for water storage in geotechnical centrifuge pivoted arm bearing 1
Water tank 31；The even number end water tank 35 on 1 liang of swivel arm 8 is supported mounted on geotechnical centrifuge pivoted arm, is located at pivoted arm and supports 1 liang
The end water tank 35 of side is symmetrically installed relative to the centre of gyration of geotechnical centrifuge, and the installation site of high water tank 31 is higher than end
The installation site of water tank 35；The more pipelines for being connected to high water tank 31 and end water tank 35 on geotechnical centrifuge
34, one end of a pipeline 34 is connected to high water tank 31, and the other end is connected to an end water tank 35；On every pipeline 34
It is provided with the flowmeter 33 for sending the servo valve 32 of water open and close control and being counted for water flow.
The installation site of high water tank 31 is higher than the installation site of end water tank 35, can keep high water tank 31 and end water
It is poor that there are certain altitudes between case 35, convenient for discharging water to end water tank 35.
Each end water tank 35 includes two semicolumn water tanks, and two semicolumn water tanks splice up and down, and pivoted arm 8 is pressed from both sides
It holds between two semicolumn water tanks, the both ends of two semicolumn water tanks are separately fixed at two locating rings 4 of geotechnical centrifuge
On, locating ring 4 is fixedly mounted in pull strap 5；Each semicolumn water tank is connected to by a pipeline 34 with high water tank 31,
It is both provided with servo valve 32 and flowmeter 33 on every pipeline 34.
End water tank 35 is installed between two locating rings 4, bears end water tank 35 by locating ring 4 and internal water is produced
Raw centrifugation force effect.
Centre of gyration installation of the end water tank 35 far from geotechnical centrifuge；Servo valve 32 and flowmeter 33 are centrifuged close to geotechnique
The centre of gyration of machine is installed.
It avoids servo valve 32 and flowmeter 33 from generating excessive its working performance of centrifugal force function influence, ensures that it is reliable
Property.
Water tank mounting base 2 is provided in pivoted arm bearing 1, high water tank 31 is mounted in water tank mounting base 2.
Each semicolumn water tank is connected to by a pipeline 34 with the bottom end of high water tank 31.
As shown in figure 3, being interlayer reinforced structure inside semicolumn water tank.
Because being subjected to greatly centrifuge force effect in high-g level lower half cylinder water tank, therefore, end water tank 35 is designed to that interlayer adds
Muscle structure ensures that water tank integrally has enough intensity requirements.
The pivoted arm 8 of geotechnical centrifuge be bicylindrical shape pulling force band structure, end water tank 35 be four, pivoted arm bearing 1 it is every
Two end water tanks 35 are set on swivel arm 8, and two semicolumn water tanks of the same end water tank 35 splice up and down, and by pivoted arm
The cylindrical pull strap of the one of 8 is clamped between two semicolumn water tanks.
The centre of gyration of geotechnical centrifuge is on the axial line of high water tank 31.
Avoidable high water tank 31, which is under high centrifugal field, bears larger centrifugation force effect.
Multiple servo valves 32, multiple flowmeters 33 are symmetrically pacified both with respect to the centre of gyration of geotechnical centrifuge in the present invention
Dress.
Geotechnical centrifuge further includes the pivoted arm 8 being made of pivoted arm bearing 1, locating ring 4 and pull strap 5 in the present invention；Counterweight
Hanging basket 6, experiment hanging basket 7, these belong to the basic composed structure of geotechnical centrifuge, do not do to apply herein and state.
The present invention waits the sensor and host computer that can be fitted at pivoted arm bearing 1 when in use, when experiment end mould
Type barycenter change generate out-of-balance force when, system by pivoted arm bearing 1 at sensor measure out-of-balance force size and on
Reach host computer.Host computer calculates balance institute water requirement by current centrifuge work g values and out-of-balance force size, concurrently
Going out instruction control, accordingly servo valve 32 acts, and water automatically flows into end water tank 35 from high water tank 31 under the action of the centrifugal force,
And water is monitored by flowmeter 33, ensure water filling accuracy of measurement.Under real-time monitoring, dynamic equilibrium regulating system 3 acts
Realize balance adjustment function.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe the originals of the present invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appending claims and equivalents circle
It is fixed.
Claims (8)
1. geotechnical centrifuge dynamic equilibrium regulating system is mounted on geotechnical centrifuge and is adjusted for its dynamic balancing, feature
It is, dynamic equilibrium regulating system includes：
The high water tank for water storage in the bearing of geotechnical centrifuge pivoted arm；
The even number end water tank on two swivel arms is supported mounted on geotechnical centrifuge pivoted arm, is located at the end of pivoted arm bearing both sides
Water tank is symmetrically installed relative to the centre of gyration of geotechnical centrifuge, and the installation site of high water tank is higher than the installation position of end water tank
It sets；
On geotechnical centrifuge for being connected to more pipelines of high water tank and end water tank, one end of a pipeline and
High water tank is connected to, and the other end is connected to an end water tank；It is both provided on every pipeline for sending watching for water open and close control
The flowmeter for taking valve and being counted for water flow.
2. geotechnical centrifuge dynamic equilibrium regulating system according to claim 1, it is characterised in that：Each end water tank is equal
Including two semicolumn water tanks, two semicolumn water tanks splice up and down, and between pivoted arm is clamped in two semicolumn water tanks, and two
The both ends of a semicolumn water tank are separately fixed on two locating rings of geotechnical centrifuge, and locating ring is fixedly mounted on pull strap
On；Each semicolumn water tank is connected to by a pipeline with high water tank, and servo valve and flow are both provided on every pipeline
Meter.
3. geotechnical centrifuge dynamic equilibrium regulating system according to claim 1 or 2, it is characterised in that：End water tank is remote
Centre of gyration installation from geotechnical centrifuge；Servo valve and flowmeter are installed close to the centre of gyration of geotechnical centrifuge.
4. geotechnical centrifuge dynamic equilibrium regulating system according to claim 1, it is characterised in that：It is arranged in pivoted arm bearing
There are water tank mounting base, high water tank to be mounted in water tank mounting base.
5. geotechnical centrifuge dynamic equilibrium regulating system according to claim 2, it is characterised in that：Each semicolumn water tank
It is connected to the bottom end of high water tank by a pipeline.
6. geotechnical centrifuge dynamic equilibrium regulating system according to claim 2, it is characterised in that：Inside semicolumn water tank
For interlayer reinforced structure.
7. geotechnical centrifuge dynamic equilibrium regulating system according to claim 2, it is characterised in that：Geotechnical centrifuge turns
Arm is bicylindrical shape pulling force band structure, and end water tank is four, two end water tanks is arranged on every swivel arm of pivoted arm bearing, together
Two semicolumn water tanks of one end water tank splice up and down, and the one of pivoted arm cylindrical pull strap is clamped in two semicolumns
Between water tank.
8. geotechnical centrifuge dynamic equilibrium regulating system according to claim 1, it is characterised in that：Geotechnical centrifuge returns
Turn center on the axial line of high water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810843902.XA CN108772211A (en) | 2018-07-27 | 2018-07-27 | Geotechnical centrifuge dynamic equilibrium regulating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810843902.XA CN108772211A (en) | 2018-07-27 | 2018-07-27 | Geotechnical centrifuge dynamic equilibrium regulating system |
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Family
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| CN201810843902.XA Pending CN108772211A (en) | 2018-07-27 | 2018-07-27 | Geotechnical centrifuge dynamic equilibrium regulating system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109261381A (en) * | 2018-11-20 | 2019-01-25 | 中国工程物理研究院总体工程研究所 | A kind of pipelining structure applied to high speed geotechnical centrifuge |
| CN109465117A (en) * | 2018-12-27 | 2019-03-15 | 中国工程物理研究院总体工程研究所 | Monoblock type centrifuge dynamically balancing device and Calculate Ways |
| CN109569900A (en) * | 2019-01-25 | 2019-04-05 | 中国工程物理研究院总体工程研究所 | A kind of geotechnical centrifuge self balancing device |
| CN113304896A (en) * | 2021-04-16 | 2021-08-27 | 中国联合工程有限公司 | Online dynamic unbalance adjusting device and method for geotechnical centrifuge rotor system |
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| CN113304896A (en) * | 2021-04-16 | 2021-08-27 | 中国联合工程有限公司 | Online dynamic unbalance adjusting device and method for geotechnical centrifuge rotor system |
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