CN106645652A - High-capacity and high-speed geotechnical centrifuge - Google Patents
High-capacity and high-speed geotechnical centrifuge Download PDFInfo
- Publication number
- CN106645652A CN106645652A CN201710096308.4A CN201710096308A CN106645652A CN 106645652 A CN106645652 A CN 106645652A CN 201710096308 A CN201710096308 A CN 201710096308A CN 106645652 A CN106645652 A CN 106645652A
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- capacity
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- arm
- machine room
- main shaft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Abstract
The invention discloses a high-capacity and high-speed geotechnical centrifuge. The high-capacity and high-speed geotechnical centrifuge adopts a double-basket symmetric folding arm structure, so that a function module required by a conventional test can be prevented from being damaged due to bearing of overhigh centrifugal force in a high centrifugal field, and a rotating arm is controlled to produce larger unbalanced force; a spindle adopts a vertical supporting mode, thus, unbalanced force bearing capacity of a main unit can be increased, and bearing load can be reduced; with the adoption of a high-speed and coarse-vacuum operating mode, wind resistance produced by the rotating arm in an operating process at high centrifugal acceleration can be reduced, and sonic boom and sonic barrier caused by supersonic speed of the end of the rotating arm can be avoided; with the adoption of a direct-driving mode of a synchronous motor, capacity of the centrifuge main unit for bearing impact vibration produced in a centrifugal test process can be improved; the centrifuge main unit is connected with a civil foundation through embedded parts fixed on the civil foundation, reliability of the connection between the main unit and the civil foundation is enhanced, and anti-overturning force capacity of the main unit is improved; the whole machine is the geotechnical centrifuge with the capacity exceeding 1,000 gt and the centrifugal acceleration higher than 1,000 g, and major scientific projects in the field of geotechnical engineering can be simulated.
Description
Technical field
The present invention relates to a kind of centrifuge, more particularly to one kind can be simulated to Geotechnical Engineering field major research item
The high-capacity and high-speed geotechnical centrifuge of test.
Background technology
In recent years, continuing to bring out with large-scale Geotechnical Engineering, it is special that the scaled model under Chang Chongli can not reproduce prototype
Property, in the urgent need to high-gravity technology solves reduced scale problem of modelling.The centrifuge n times of acceleration of gravity of generation rotated using high speed
Super gravity field, the weight stress that compensation model is caused because of reduced scale is lost, model dimension produce n times scale effect, n2 times
Effect, n3 times of reinforcing energy effect during contracting.
From 1931 in the world First radius for 0.25m geotechnical centrifuge Columbia Univ USA be born with
Come, the development of Jing many decades, existing more than 200 platforms of current whole world geotechnical centrifuge.Using these geotechnical centrifuges, solving in fact
During the geotechnical engineering problems of border, great achievement is achieved.
However, in the world large geotechnical centrifuge of the capacity more than 500gt is but less than 10.Maximum of which centrifuge
It is French Actidyn companies nineteen ninety-five to build up 1144gt centrifuges for AUS engineer formation water channel experiment station (WES),
Centrifuge radius 7m, maximum centrifugal acceleration 350g.The maximum centrifuge of China is Chinese physical engineering research institute totality work
The 500gt geotechnical centrifuges that Chengdu University of Technology carried out by journey research develops, and be just that the 600gt that Zhengzhou University develops is native
Work centrifuge.The former maximum centrifugal acceleration is 250g, and the latter's maximum centrifugal acceleration is 200g.
Existing geotechnical centrifuge can carry out conventional centrifuge model test, and achieved with preferable effect, but because of it
Maximum capacity is limited, and the test model of carrying is less, meanwhile, its maximum centrifugal acceleration is relatively low, also can not be less examination
Test model and larger centrifugal field is provided.Existing geotechnical centrifuge does not possess deeply to more than 300 meters high dam securities, km levels
Deep-sea engineering, century-old span underground environmental pollution, square kilometre yardstick city antidetonation, km yardstick aircraft shock and high energy are quick-fried
The major research item such as fried carries out the ability of test simulation.
The content of the invention
The purpose of the present invention is that and provide a kind of high-capacity and high-speed geotechnical centrifuge in order to solve the above problems.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of high-capacity and high-speed geotechnical centrifuge, including foundation of civil work, are provided with synchronous motor, rotation in the foundation of civil work
Adapter, pivoted arm, vertically-mounted main shaft and for supporting the transmission of the main shaft to support, on the pivoted arm hanging basket is provided with,
It is disposed with three floor machine rooms in the foundation of civil work from top to bottom, the outer top surface of the foundation of civil work is provided with instrument room
Frame and the upper instrument room on the upper instrument room support, the upper end of the main shaft passes through power transmission shaft with the upper instrument room
Connection, the pivoted arm is arranged on middle level machine room, and the synchronous motor and the swivel joint are arranged at lower floor's machine room, the rotation
Adapter is connected to the lower turning end of the synchronous motor；
The lower end of the main shaft sequentially passes through upper strata machine room, middle level machine room and extends to lower floor's machine room, under the main shaft
End is connected by shaft coupling with the upper turning end of the synchronous motor；
The transmission is supported with two, and respectively upper transmission supporting and underdrive supporting, the upper transmission supporting and fixing
Top in the machine room of upper strata, the underdrive supporting and fixing is arranged on the bottom in the machine room of middle level, and the main shaft runs through
Two transmission supportings；
The pivoted arm includes principal arm and the auxiliary arm being stacked on the principal arm, is removable between the auxiliary arm and the principal arm
Formula attachment structure is unloaded, the auxiliary arm protective cabin for installing auxiliary arm, the auxiliary arm protective cabin and middle level machine are provided with the machine room of upper strata
Chamber interior is communicated；
The hanging basket includes two high speed hanging baskets and two low speed hanging baskets, and the principal arm is symmetrically set centered on the main shaft
It is equipped with two hinge positions and two hinge positions for being used to connect low speed hanging basket for connecting high speed hanging basket.
Used as a kind of technical scheme that this patent is selected, the principal arm is provided with auxiliary arm spacing hole, and the auxiliary arm is installed on
Fixed in the auxiliary arm spacing hole of the principal arm and by fastening bolt.
As a kind of technical scheme that this patent is selected, built-in fitting is provided with the foundation of civil work, the built-in fitting is
Upper and lower ends are provided with the cylindrical metallic structure of flange, and the main shaft runs through the built-in fitting, and the underdrive supporting passes through
Bolt and nut are fixedly connected with the built-in fitting.
As a kind of technical scheme that this patent is selected, the upper and lower flange of built-in fitting described in the bolt-through and two ends
It is spacing by nut.
Used as a kind of technical scheme that this patent is selected, the upper transmission supporting is back taper structure, the underdrive supporting
For positive wimble structure, the bottom surface of the upper transmission supporting is arranged on the outer top surface of the foundation of civil work, the cone of the upper transmission supporting
Top of the end in the machine room of upper strata.
Used as a kind of technical scheme that this patent is selected, the machine room of the foundation of civil work is the salable knot that can be vacuumized
Structure, between the bearing block and supporting support of transmission supporting, the upper surface of the closure of the transmission supporting and the main shaft
Between be provided with static seal structure, be provided with movable sealing structure between the closure and bearing block of the transmission supporting.
The beneficial effects of the present invention is：
1) arm configuration is symmetrically folded using double hanging baskets, can not only avoids low speed routine test required function module in high centrifugal field
Under bore high centrifugal force and damaged, also help control pivoted arm larger out-of-balance force is produced in operation process；
2) main shaft adopts upper and lower support pattern, it is possible to increase main frame carries out-of-balance force ability and reduces the load of each bearing；
3) using high speed low-vacuum-operating mode, it is possible to decrease pivoted arm produces huge wind in high centrifugal acceleration operation process
Hinder and avoid pivoted arm termination supersonic speed to bring sonic boom sound barrier etc. to endanger；
4) using synchronous motor direct drive mode, can improve centrifugation machine host carry centrifugal test during produce rush
Hit vibration ability；
5) machine host is centrifuged to couple with foundation of civil work by the built-in fitting being fixed on foundation of civil work, enhances main frame with soil
The reliability of basis connection is built, main frame anchorage ability is improve；
6) whole machine is high-capacity and high-speed geotechnical centrifuge of the capacity more than 1000gt, centrifugal acceleration higher than 1000g, can
Geotechnical Engineering field major research item is simulated and is tested.
Description of the drawings
Fig. 1 is the structural representation of high-capacity and high-speed geotechnical centrifuge of the present invention；
Fig. 2 is structural representation when pivoted arm of the present invention is provided with low speed hanging basket and auxiliary arm；
Fig. 3 be pivoted arm of the present invention high speed hanging basket is installed and dismantle auxiliary arm when structural representation；
Fig. 4 is the mounting structure schematic diagram of underdrive supporting of the present invention；
Fig. 5 is the structural representation of built-in fitting of the present invention；
Fig. 6 is the mounting structure schematic diagram of upper transmission supporting of the present invention；
In figure：1- swivel joints, 2- synchronous motors, 3- shaft couplings, the supporting of 4- underdrives, 5- pivoted arms, the auxiliary arm protective cabins of 6-,
7- main shafts, 8- foundations of civil work, transmission supporting, the upper instrument room supports of 10-, the upper instrument rooms of 11-, 12- low speed hanging baskets, 13- master on 9-
Arm, the auxiliary arms of 14-, 15- high speed hanging baskets, 16- built-in fittings, 17- nuts, 18- bolts, 19- power transmission shafts.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described：
With reference to shown in Fig. 1, Fig. 2 and Fig. 3, the present invention includes foundation of civil work 8, be provided with foundation of civil work 8 synchronous motor 2,
Swivel joint 1, pivoted arm 5, vertically-mounted main shaft 7 and the transmission for supports main shaft 7 are supported, and hanging basket are provided with pivoted arm 5, soil
Build in basis 8 and be disposed with three floor machine rooms from top to bottom, the outer top surface of foundation of civil work 8 is provided with instrument room support 10 and peace
The upper instrument room 11 being mounted on instrument room support 10, the upper end of main shaft 7 is connected with upper instrument room 11 by power transmission shaft 19, pivoted arm
5 are arranged on middle level machine room, and synchronous motor 2 and swivel joint 1 are arranged at lower floor's machine room, and swivel joint 1 is connected to synchronous motor 2
Lower turning end；The lower end of main shaft 7 sequentially passes through upper strata machine room, middle level machine room and extends to lower floor's machine room, and the lower end of main shaft 7 leads to
Cross shaft coupling 3 to be connected with the upper turning end of synchronous motor 2；Transmission is supported with two, and respectively upper transmission supporting 9 and underdrive
Supporting 4, upper transmission supporting 9 is fixedly mounted on the top in the machine room of upper strata, and underdrive supporting 4 is fixedly mounted in the machine room of middle level
Bottom, main shaft 7 is through two transmission supportings；
Pivoted arm 5 includes principal arm 13 and the auxiliary arm 14 being stacked on principal arm 13, is detachable between auxiliary arm 14 and principal arm 13
Attachment structure, is provided with the auxiliary arm protective cabin 6 for installing auxiliary arm 14, in auxiliary arm protective cabin 6 and middle level machine room in the machine room of upper strata
Portion communicates, and hanging basket includes two high speed hanging baskets 15 and two low speed hanging baskets 12, and principal arm 13 is symmetrically arranged with two centered on main shaft 7
Individual hinge position and two hinge positions for being used to connect low speed hanging basket 12 for connecting high speed hanging basket 15.
Whole high-capacity and high-speed geotechnical centrifuge is directly driven using synchronous motor 2, and synchronous motor 2 is upwardly through shaft coupling
3 driving underdrives support 4 inner main axis 7 and rotate, and joint 1 is rotated downwards and is rotated.Main shaft 7 is carried out with pivoted arm 5 by taper seat
Supporting and positioning, are connected firmly by expansion set.The rotation of main shaft 7 drives pivoted arm 5 to rotate together, so as to remote installed in pivoted arm 5
The test model at end produces centrifugal acceleration.By controlling the rotating speed of synchronous motor 2, test model can be produced different values from
Heart acceleration.
Main shaft 7, so as to form upper lower support to main shaft 7, so may be used by its radial displacement of upper and lower two transmission supporting constraints
The out-of-balance force ability that main shaft 7 carries pivoted arm 5 is improved, while reducing the load of transmission supporting inner bearing.Synchronous motor 2 turn
The part of main shaft 7 at axle, underdrive supporting 4 is hollow shaft, through hole will be formed after installation, so as to cable involved by swivel joint 1
Pivoted arm 5 is entered by the passage.
Pivoted arm 5 symmetrically folds arm configuration for double hanging baskets.When low centrifugal acceleration is run, the two ends of principal arm 13 hang low speed hanging basket
12, and run with the overlapping of auxiliary arm 14, as shown in Figure 2.Lower instrument room, accumulator, data actuation, dynamic is symmetrically installed with auxiliary arm 14
The functional modules such as balance-conditioning system (mounting means of these parts is prior art, and here is seldom explained), by these
Functional module, balance adjustment, the data acquisition being capable of achieving during conventional soil test of the pivoted arm 5 under low centrifugal acceleration etc.
Function.
When high centrifugal acceleration is run, the lifting of auxiliary arm 14 is hidden in auxiliary arm protective cabin 6, now, pivoted arm 5 is only led
Arm 13 and high speed hanging basket 15 rotate, as shown in Figure 3.In order to reduce pivoted arm 5 produce in high centrifugal acceleration running it is huge
Windage and the harm such as sonic boom sound barrier that the termination supersonic speed of pivoted arm 5 brings are avoided, machine hall (middle level machine room) needs to be pumped into low true
It is empty.
Pivoted arm 5 is provided with four sets of out-of-balance force monitoring systems, the pivoted arm supporting both sides being symmetrically mounted in pivoted arm 5, and this is existing
There is technology.
A kind of mounting means as auxiliary arm 14 on principal arm 13, principal arm 13 is provided with the spacing hole of auxiliary arm 14, and auxiliary arm 14 is pacified
Fix in the spacing hole of auxiliary arm 14 loaded on principal arm 13 and by fastening bolt.
Using patented technology, " high rotating speed geotechnical centrifuge hanging basket pocket fills backlash eliminating equipment, the patent No. to high speed hanging basket 15：ZL
2016203008546 " run installed in principal arm 13.
With reference to shown in Fig. 4 and Fig. 5, as a kind of technical scheme that this patent is selected, in foundation of civil work 8 built-in fitting is provided with
16, built-in fitting 16 is provided with the cylindrical metallic structure of flange for upper and lower ends, and main shaft 7 runs through built-in fitting 16, underdrive supporting 4
It is fixedly connected with built-in fitting 16 by bolt 18 and nut 17.
Used as a kind of technical scheme that this patent is selected, bolt 18 runs through the upper and lower flange of built-in fitting 16 and two ends lead to
Cross nut 17 spacing.
With reference to shown in Fig. 4 and Fig. 6, used as a kind of technical scheme that this patent is selected, upper transmission supporting 9 is back taper structure,
Underdrive supporting 4 is positive wimble structure, and the bottom surface of upper transmission supporting 4 is arranged on the outer top surface of foundation of civil work 8, upper transmission supporting 4
Tapered end is located at the top in the machine room of upper strata.
Underdrive 4 structures of supporting and fixed form use for reference patent, and " solid propellant rocket is centrifuged overload test system, specially
Profit number：Correlation technique involved by ZL 201520332501X ".
In order that machine hall (middle level machine room) forms annular seal space and is easy to vacuumize, as a kind of technology that this patent is selected
Scheme, the machine room of foundation of civil work 8 is the salable structure that can be vacuumized, be driven between the bearing block of supporting and supporting support,
Static seal structure is provided between the closure of transmission supporting and the upper surface of main shaft 7, the closure and bearing of supporting is driven
Movable sealing structure is provided between seat.
These are only presently preferred embodiments of the present invention, not to limit the present invention, all spirit in the present invention and
Any modification, equivalent and improvement for being made within principle etc., should be included in protection scope of the present invention.
Claims (6)
1. a kind of high-capacity and high-speed geotechnical centrifuge, including foundation of civil work, is provided with synchronous motor, rotation in the foundation of civil work
Joint, pivoted arm, vertically-mounted main shaft and for supporting the transmission of the main shaft to support, are provided with hanging basket, institute on the pivoted arm
State in foundation of civil work and be disposed with three floor machine rooms from top to bottom, the outer top surface of the foundation of civil work is provided with instrument room support
And the upper instrument room on the upper instrument room support, the upper end of the main shaft is connected with the upper instrument room by power transmission shaft
Connect, the pivoted arm is arranged on middle level machine room, the synchronous motor and the swivel joint are arranged at lower floor's machine room, the rotation
Joint is connected to the lower turning end of the synchronous motor, it is characterised in that：
The lower end of the main shaft sequentially passes through upper strata machine room, middle level machine room and extends to lower floor's machine room, and the lower end of the main shaft leads to
Cross shaft coupling to be connected with the upper turning end of the synchronous motor；
The transmission is supported with two, and respectively upper transmission supporting and underdrive supporting, and the upper transmission supporting and fixing is installed
Top in the machine room of upper strata, the underdrive supporting and fixing is arranged on the bottom in the machine room of middle level, and the main shaft runs through two
The transmission supporting；
The pivoted arm includes principal arm and the auxiliary arm being stacked on the principal arm, is detachable between the auxiliary arm and the principal arm
Attachment structure, is provided with the auxiliary arm protective cabin for installing auxiliary arm, in the auxiliary arm protective cabin and middle level machine room in the machine room of upper strata
Portion communicates；
The hanging basket includes two high speed hanging baskets and two low speed hanging baskets, and the principal arm is symmetrically arranged with centered on the main shaft
Two hinge positions for being used to connect high speed hanging basket and two hinge positions for being used to connect low speed hanging basket.
2. high-capacity and high-speed geotechnical centrifuge according to claim 1, it is characterised in that：The principal arm is provided with auxiliary arm limit
Position hole, the auxiliary arm is installed in the auxiliary arm spacing hole of the principal arm and is fixed by fastening bolt.
3. high-capacity and high-speed geotechnical centrifuge according to claim 1, it is characterised in that：It is provided with the foundation of civil work
Built-in fitting, the built-in fitting is provided with the cylindrical metallic structure of flange for upper and lower ends, and the main shaft runs through the built-in fitting,
The underdrive supporting is fixedly connected by bolt and nut with the built-in fitting.
4. high-capacity and high-speed geotechnical centrifuge according to claim 3, it is characterised in that：It is pre-buried described in the bolt-through
The upper and lower flange of part and two ends are spacing by nut.
5. high-capacity and high-speed geotechnical centrifuge according to claim 1, it is characterised in that：The upper transmission supporting position back taper
Structure, the underdrive supporting is positive wimble structure, and the bottom surface of the upper transmission supporting is arranged on the outer top surface of the foundation of civil work,
The tapered end of the upper transmission supporting is located at the top in the machine room of upper strata.
6. high-capacity and high-speed geotechnical centrifuge according to claim 1, it is characterised in that：The machine room of the foundation of civil work is
The salable structure that can be vacuumized, between the bearing block and supporting support of transmission supporting, the sealing of the transmission supporting
Static seal structure is provided between lid and the upper surface of the main shaft, is set between the closure and bearing block of the transmission supporting
It is equipped with movable sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710096308.4A CN106645652B (en) | 2017-02-22 | 2017-02-22 | High-capacity high-speed geotechnical centrifuge |
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| CN201710096308.4A CN106645652B (en) | 2017-02-22 | 2017-02-22 | High-capacity high-speed geotechnical centrifuge |
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| CN106645652A true CN106645652A (en) | 2017-05-10 |
| CN106645652B CN106645652B (en) | 2023-06-16 |
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Cited By (9)
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|---|---|---|---|---|
| CN108414731A (en) * | 2018-05-08 | 2018-08-17 | 中国工程物理研究院总体工程研究所 | The geotechnical centrifuge structure of single-layer layout |
| CN108896465A (en) * | 2018-07-02 | 2018-11-27 | 交通运输部天津水运工程科学研究所 | The method of vacuum generating device and realization vacuum in geotechnical centrifugal model test |
| CN109365143A (en) * | 2018-11-20 | 2019-02-22 | 中国工程物理研究院总体工程研究所 | A kind of high speed geotechnical centrifuge structure |
| CN109967269A (en) * | 2019-04-30 | 2019-07-05 | 中国工程物理研究院总体工程研究所 | A kind of support of centrifuge pivoted arm and drive mechanism |
| CN110013919A (en) * | 2019-03-11 | 2019-07-16 | 中国水利水电科学研究院 | A kind of vacuum line magnetic suspension ground centrifuge |
| CN111289280A (en) * | 2020-03-06 | 2020-06-16 | 中国工程物理研究院总体工程研究所 | Bending-resistant centrifuge rotating arm with load posture capable of being adjusted in multiple directions |
| WO2020220428A1 (en) * | 2019-04-28 | 2020-11-05 | 浙江大学 | Vacuum cavity structure of ultra-high-gravity geotechnical centrifugal device |
| CN112781519A (en) * | 2021-01-20 | 2021-05-11 | 南京大学 | Physical simulation experiment device and method for rock ring structural deformation |
| CN114534930A (en) * | 2022-01-25 | 2022-05-27 | 浙江大学 | Multi-channel oil-water conveying device and method of arm type centrifugal machine |
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