CN208383411U - Work the heavy load high frequency sound electrohydraulic servo oscillation device under high centrifugal field - Google Patents
Work the heavy load high frequency sound electrohydraulic servo oscillation device under high centrifugal field Download PDFInfo
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- CN208383411U CN208383411U CN201820952202.XU CN201820952202U CN208383411U CN 208383411 U CN208383411 U CN 208383411U CN 201820952202 U CN201820952202 U CN 201820952202U CN 208383411 U CN208383411 U CN 208383411U
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Abstract
The utility model discloses a kind of heavy load high frequency sound electrohydraulic servo oscillation device of work under high centrifugal field, and the vibration device is mounted on the hanging basket of the pivoted arm of centrifuge, and is driven by hydraulic system；The vibration device includes model casing, bottom plate, vibration table and hydraulic cylinder, and the hydraulic system includes high-pressure oil pump, main oil inlet accumulator, main oil-return accumulator, secondary oil inlet accumulator and secondary oil-return accumulator；Utility model works can be under high centrifugal field, high load and the higher electrohydraulic servo oscillation device of frequency response in the heavy load high frequency sound electrohydraulic servo oscillation device under high centrifugal field, the device effectively overcomes the shortcomings that vibration device and ground vibration device based on other principles, with driving load capacity is strong, response frequency is high and Hz-KHz is larger, the features such as response accuracy is high can meet the requirement of the seismic model experiment of soil structure under centrifugal field well.
Description
Technical field
The utility model relates to a kind of heavy load of vibration test field more particularly to work under high centrifugal field is high
Frequency response electrohydraulic servo oscillation device.
Background technique
The vibration test of centrifugal field drag be one research geotechnical engineering earthquake generation and failure mechanism it is high-new
Technology, this technology has been used to the mutual of geotechnical structure under the deformation of dykes and dams antidetonation, slope seismic stability, seismic condition at present
The research of effect, liquefaction of soil mass etc., a large number of experiments show that, the vibration test result under centrifugal field can reproduce engineering well
Constructional aspect and failure mechanism, in analysis earthquake failure mechanism, anti-seismic technology calculates and numerical model is verified etc. has huge
Big superiority.
Earthquake simulation test under centrifugal field has that model is equal with the ess-strain of prototype, deforms similar, failure mechanism
Phase same advantages, and can be then most effective earthquake simulation test equipment in the effectively worked vibration device of centrifugal field.Root
According to the difference of vibration mechanism, there are following various forms of vibration devices:
Spring-driven vibration device is triggered by hydraulic system to be vibrated, using leaf spring as vibration source, the one of model casing
Side installs leaf spring and adjusts vibration frequency, but can only export that sine wave, power output is small, vibration frequency is low, frequency range is narrow, is unable to satisfy
Specified vibration requirement.
Explosive vibration device is that coyote hole is disposed before model casing, and coyote hole and model casing are by there is the wave reflection of filtration
Case connection, when explosion time occurs for coyote hole, compressed air just will push model casing and carry out piston motion, explosive vibration device amplitude
The vibrational waveform error of low precision, output waveform and requirement is larger.
Electromagnetic oscillation device is to generate magnetic field with induction winding, the principle for vibrating model.Principles above is different
Shake table is widely applied since the defect of itself is unable to get and its technology under centrifugal field is applied to realize extremely difficult, electromagnetism
The big electromagnetic actuator weight and volume of vibration device is all larger, load it is smaller, limited by centrifuge payload it is larger, on
It states principle shake table mainly to use on the ground, ground vibration device is due to the disadvantages such as its driving is small, load is small, vibration frequency is low
Can not the accurate simulation prototype soil body strain field, can not accurately reproduce the generation and failure mechanism of true earthquake.
Utility model content
The purpose of this utility model be that solve the above-mentioned problems and provide it is a kind of work it is big under high centrifugal field
Load high frequency sound electrohydraulic servo oscillation device.
The utility model achieves the above object through the following technical schemes:
A kind of heavy load high frequency sound electrohydraulic servo oscillation device under high centrifugal field that works, the vibration device are mounted on
On the hanging basket of the pivoted arm of centrifuge, and driven by hydraulic system；
The vibration device includes model casing, bottom plate, vibration table and hydraulic cylinder, and the floor level is arranged and is mounted on
On one end hanging basket platform of the pivoted arm, the hydraulic cylinder is horizontally disposed and is fixedly connected with the bottom plate, the vibration table
By sliding equipment and the bottom plate slidable connection, the model casing is detachably connected with the vibration table, the bottom plate
It is fixedly connected by attachment screw with the hanging basket bottom surface；
The hydraulic system includes high pressure fuel source, main oil inlet accumulator, main oil-return accumulator, secondary oil inlet accumulator and secondary time
Oily accumulator and servo valve, the oil outlet and oil inlet end of the high pressure fuel source pass through servo valve and are connected to the hydraulic cylinder, institute
State be connected in turn on the oil circuit between the oil outlet of high pressure fuel source and the hydraulic cylinder the main oil inlet accumulator, it is described time into
Oily accumulator and servo valve are sequentially connected the servo on the oil circuit between the oil revolving end of the high pressure fuel source and the hydraulic cylinder
Valve, the main oil-return accumulator and the secondary oil-return accumulator.
Specifically, the quantity of the main oil inlet accumulator and the main oil-return accumulator is two, two main oil inlets
Accumulator is symmetrically arranged at the outside of the pivoted arm, and two main oil-return accumulators are symmetrically arranged at the pivoted arm
Inside, the pipeline between the main oil inlet accumulator and the main oil-return accumulator and the high pressure fuel source passes through rotary joint
Connection, the servo valve and the hydraulic cylinder Integrated design, are integrally formed.
The secondary oil inlet accumulator and the secondary oil-return accumulator are arranged in parallel in the two sides of the vibration table, institute respectively
Stating sliding equipment includes guide rail and sliding block, and the guide rail is fixed on the bottom plate, and the vibration table passes through the cunning
Block and the guide rail slidable connection.
Preferably, the attachment screw is parallel with the direction of action of the hydraulic cylinder.
Specifically, the fixing end of the hydraulic cylinder is fixedly connected by fixing screws with the bottom plate, the hydraulic stem
Direction of action is provided with the pin for undertaking reaction shear stress.
Specifically, coupled between the piston rod of the hydraulic cylinder and the vibration table by connector, the hydraulic cylinder
It is connected through a screw thread between the connector, the internal screw thread on the connector is provided with grooving, and passes through multiple gap spiral shells that disappear
Nail eliminates connection gap, is coupled between the connector and the vibration table by multiple distributions.
Further, hydrostatic support is provided between the piston rod of the hydraulic cylinder and the cylinder body of the hydraulic cylinder, it is described quiet
Hydraulic support is connected to auxiliary oil pump, and the auxiliary oil pump is arranged in basement.
Specifically, the centrifuge includes the pivoted arm and drive system, and the drive shaft of the drive system is vertically arranged,
The pivoted arm is horizontally disposed, and the both ends of the pivoted arm are respectively set there are two the hanging basket, and the vibration device and clump weight divide
It is not fixed in two hanging baskets.
Specifically, the drive shaft is fixed on machine hall bottom surface by being driven support upright, is set below the machine hall
It is equipped with basement, the high pressure fuel source and the drive system are arranged in the basement, and the ground of the machine hall is set
It is equipped with the through-hole being connected to the basement, the lower end of the drive shaft passes through the through-hole and the torque of the drive system is defeated
Outlet connection.
The utility model has the beneficial effects that:
Heavy load high frequency sound electrohydraulic servo oscillation device of the utility model works under high centrifugal field can be centrifuged in height
Off field, high load and the higher electrohydraulic servo oscillation device of frequency response, the device effectively overcome the dress of the vibration based on other principles
The shortcomings that setting with ground vibration device, has that driving load capacity is strong, response frequency is high and Hz-KHz is larger, and response accuracy is high
The features such as, the requirement of the seismic model experiment of soil structure under centrifugal field can be met well.
Detailed description of the invention
Fig. 1 is heavy load high frequency sound electrohydraulic servo oscillation device of the work described in the utility model under high centrifugal field
Main view is installed；
Fig. 2 is heavy load high frequency sound electrohydraulic servo oscillation device of the work described in the utility model under high centrifugal field
Top view is installed；
Fig. 3 is the structural schematic diagram of vibration device described in the utility model；
Fig. 4 is the structural schematic diagram of vibration device described in the utility model；
Fig. 5 is the scheme of installation of hydraulic cylinder described in the utility model；
Fig. 6 is the structural schematic diagram of connector described in the utility model；
Fig. 7 is the hydraulic schematic diagram of this hydraulic system of leavening dough.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, a kind of work of the utility model is big under high centrifugal field
High frequency sound electrohydraulic servo oscillation device, including centrifugation systems, hydraulic system and vibrational system 6 are loaded,
Hydraulic system includes high pressure fuel source 1, main oil inlet accumulator 8, main oil-return accumulator 9, secondary oil inlet accumulator 15 and secondary
Oil-return accumulator 16, the oil outlet and oil revolving end of high pressure fuel source 1 pass through servo valve and are connected to hydraulic cylinder 13, high pressure fuel source 1
It is connected with main oil inlet accumulator 8 and time oil inlet accumulator 15, high pressure fuel source 1 on oil circuit between oil outlet and hydraulic cylinder 13 in turn
Oil revolving end and hydraulic cylinder between oil circuit on be connected with main oil-return accumulator 9 and time oil-return accumulator 16 in turn, main oil inlet stores
The quantity of energy device 8 and main oil-return accumulator 9 is two, and two main oil inlet accumulators 8 are symmetrically arranged at the outside of pivoted arm 3,
Two main oil-return accumulators 9 are symmetrically arranged the inside for being extracted into pivoted arm 3, main oil inlet accumulator 8 and main oil-return accumulator 9 and height
Pipeline between pressure oil source 1 is connected to by rotary joint, and secondary oil inlet accumulator 15 and time oil-return accumulator 16 are arranged in parallel respectively
In the two sides of vibration table 14, guide rail 17 is fixed on bottom plate 12, and vibration table 14 can be slided by sliding block 18 with guide rail 17
Dynamic connection.
Hydraulic system is the power mechanism of vibration device, by servo valve, hydraulic cylinder 13, accumulator group, rotary joint and height
The composition such as pressure oil source 1.In order to guarantee the stability of hydraulic system, fuel feeding is distinguished using hydrostatic support and hydraulic cylinder 13, to guarantee
The steady operation of hydrostatic support.Arrange two oil inlet accumulators, on main in-line to provide big-flow high-pressure when vibration test
Oil, while two oil-return accumulators, instantaneous big flow oil return, main in-line when storing vibration test are arranged in main oil return line
Two main oil inlet accumulators 8 are symmetrically mounted on 3 two sides of pivoted arm, and the main oil-return accumulator 9 of main oil return line two is symmetrically mounted on pivoted arm 3
Inside, the layout can reduce influence of the accumulator under centrifugal field to pivoted arm 3.
Servo valve is controlled using pilot stage, and pilot stage is internal control type, by working connection fuel feeding.Before vibration experiment starts, first
Auxiliary oil pump is opened, is hydrostatic support fuel feeding, piston rod is enable smoothly to float, is in preparation state；Then it opens high
Pressure oil source 1, the high pressure oil of output are filled to rated pressure by the accumulator on rotary joint to centrifuge.
It is on the one hand 13 fuel feeding of hydraulic cylinder, another aspect high pressure by servo valve control fuel feeding accumulator after experiment starts
Oil sources 1 is in oil condition eventually, so that providing hydraulic cylinder 13 moves back and forth required supplement hydraulic oil.
Driving element of the hydraulic cylinder 13 as vibration device, the Frequency Response of itself directly influence the frequency of vibration device
Ring, take following measure to improve 13 frequency response of hydraulic cylinder: servo valve and 13 Integrated design of hydraulic cylinder, shorten as far as possible servo valve and
Distance between 13 oil pocket of hydraulic cylinder；Mitigate piston rod weight as far as possible on the basis of meeting mechanical requirements, and at piston rod both ends
Portion and cylinder body contact position design hydrostatic support are to guarantee rigidity of the piston rod on direction of vibration, the piston rod and liquid of hydraulic cylinder 13
Hydrostatic support is provided between the cylinder body of cylinder pressure 13, hydrostatic support is connected to auxiliary oil pump, and auxiliary oil pump is arranged in basement 11
It is interior.
Centrifugation systems include pivoted arm 3 and drive system 2, and the drive shaft of drive system 2 is vertically arranged, and pivoted arm 3 is horizontally disposed,
And be fixedly connected by hydrostatic support with the upper end of drive shaft, 6 He of vibrational system is respectively arranged in the hanging basket at the both ends of pivoted arm 3
Clump weight 7, drive shaft are fixed on 10 bottom surface of machine hall vertically by transmission bearing 4, are provided with basement below machine hall 10
11, high pressure fuel source 1 and drive system 2 are arranged in basement 11, and the ground of machine hall 10 is provided with to be connected to basement 11
Through-hole, the lower end of drive shaft passes through through-hole and connect with the torque output end of drive system 2.
High pressure fuel source 1, rotary joint, drive system 2 are mounted on basement 11, can reduce the noise of oil sources in this way to reality
The influence of room is tested, while high pressure fuel source 1 is closer with rotary joint, reduce the length of pipeline, to reduce hydraulic system
Pressure drop on pipeline.
Vibration device 6 includes model casing 20, bottom plate 12, vibration table 14 and hydraulic cylinder 13, and bottom plate 12 passes through attachment screw
23 are fixedly connected with hanging basket 5, and hydraulic cylinder 13 is horizontally disposed and is fixedly connected with bottom plate 12, and vibration table 14 and bottom plate 12 are slidably
Connection, model casing 20 are detachably connected with vibration table 14, and attachment screw 23 is parallel with the direction of action of hydraulic cylinder 13, passes through company
It is fixed to connect screw 23, recoil mass of the hanging basket 5 as system withstands hanging basket 5 along direction of vibration design attachment screw 23, guarantee vibration
Reaction force as much as possible biography of the connection type of connection rigidity on dynamic direction, vibration device and hanging basket 5 vibrational system 6
Hanging basket 5 is passed, to improve vibration frequency.
Vibration device 6 designs integral installation bottom plate 12, is directly installed on hanging basket 5, and guide rail 17 is moved as vibrational system 6
Bearing and motion guide are mounted on bottom plate 12, and vibration table 14 is mounted on guide rail 17 by sliding block 18, shear model box 20
And model is fixed on vibration table 14, vibrational system 6 is symmetric in hanging basket 5, can effectively avoid because layout is asymmetric
Additional load torque is introduced, centrifuge host performance is impacted
The fixing end of hydraulic cylinder 13 is fixedly connected by fixing screws 22 with bottom plate 12, and the direction of action of hydraulic stem is provided with
For undertaking the pin 21 of reaction shear stress, hydraulic cylinder 13 is mounted on bottom plate 12, passes through the fixed spiral shell of 4 pins 21 and 6
Nail 22 is fixed together with bottom plate 12, and wherein pin 21 undertakes the reaction shear stress of hydraulic cylinder 13, it is ensured that hydraulic cylinder 13 is anti-
It is constant with relative position of the bottom plate 12 on direction of vibration under active force.
Coupled between the piston rod of hydraulic cylinder 13 and vibration table 14 by connector 19, hydraulic cylinder 13 and connector 19 it
Between be connected through a screw thread, the internal screw thread on connector 19 is provided with grooving, and eliminates connection gaps by multiple gap screws 25 that disappear,
Coupled between connector 19 and vibration table 14 by multiple distributions 24, the speed and thrust of the piston rod output of hydraulic cylinder 13 need
The vibration table 14 for effectively passing to installation model casing 20 just can ensure that Vibration Condition and hydraulic cylinder 13 at model casing 20 in this way
The consistency of piston rod movement, just can ensure that vibration frequency.Coupled between hydraulic cylinder 13 and vibration table 14 by connector 19,
It is threaded between 13 piston rod of hydraulic cylinder and connector 19, the internal screw thread on connector 19 is provided with grooving, and passes through four
The gap screw 25 that disappears eliminates connection gap, and four taper pins are designed between connector 19 and vibration table 14 and couples, guarantees connection just
Property.
Entire layout type of the vibrational system 6 on centrifuge, vibrational system 6 is mounted in hanging basket 5 and model casing 20 1
Side is got rid of usually in hanging basket 5 in the top of hydraulic cylinder 13, vibrational system 6 along 13 piston rod axis of hydraulic cylinder symmetric design mode,
It can avoid introducing additional load torque because layout is asymmetric, reduction impacts centrifuge host performance.
The limitation that the technical solution of the utility model is not limited to the above specific embodiments, all skills according to the present utility model
The technology deformation that art scheme is made, each falls within the protection scope of the utility model.
Claims (8)
1. a kind of heavy load high frequency sound electrohydraulic servo oscillation device of work under high centrifugal field, it is characterised in that: the vibration
Device is mounted on the hanging basket of the pivoted arm of centrifuge, and is driven by hydraulic system；
The vibration device includes model casing, bottom plate, vibration table and hydraulic cylinder, and the floor level is arranged and is mounted on described
On one end hanging basket platform of pivoted arm, the hydraulic cylinder is horizontally disposed and is fixedly connected with the bottom plate, and the vibration table passes through
Sliding equipment and the bottom plate slidable connection, the model casing are detachably connected with the vibration table, and the bottom plate passes through
Attachment screw is fixedly connected with the hanging basket bottom surface；
The hydraulic system includes that high pressure fuel source, main oil inlet accumulator, main oil-return accumulator, secondary oil inlet accumulator and secondary oil return store
Energy device and servo valve, the oil outlet and oil inlet end of the high pressure fuel source pass through the servo valve and are connected to the hydraulic cylinder, institute
State be connected in turn on the oil circuit between the oil outlet of high pressure fuel source and the hydraulic cylinder the main oil inlet accumulator, it is described time into
Oily accumulator and the servo valve are sequentially connected on the oil circuit between the oil revolving end of the high pressure fuel source and the hydraulic cylinder described
Servo valve, the main oil-return accumulator and the secondary oil-return accumulator.
2. heavy load high frequency sound electrohydraulic servo oscillation device of the work according to claim 1 under high centrifugal field, special
Sign is: the quantity of the main oil inlet accumulator and the main oil-return accumulator is two, two main oil inlet accumulators point
It is not symmetricly set on the outside of the pivoted arm, two main oil-return accumulators are symmetrically arranged at the inside of the pivoted arm,
The main oil inlet accumulator and the main oil-return accumulator are connected to the pipeline between the high pressure fuel source by rotary joint, institute
Servo valve and the hydraulic cylinder Integrated design are stated, is integrally formed；
The secondary oil inlet accumulator and the secondary oil-return accumulator are arranged in parallel in the two sides of the vibration table, the cunning respectively
Motivation structure includes guide rail and sliding block, and the guide rail is fixed on the bottom plate, the vibration table by the sliding block with
The guide rail slidable connection.
3. heavy load high frequency sound electrohydraulic servo oscillation device of the work according to claim 1 under high centrifugal field, special
Sign is: the attachment screw is parallel with the direction of action of the hydraulic cylinder.
4. heavy load high frequency sound electrohydraulic servo oscillation device of the work according to claim 1 under high centrifugal field, special
Sign is: the fixing end of the hydraulic cylinder is fixedly connected by fixing screws with the bottom plate, the direction of action of the hydraulic cylinder
It is provided with the pin for undertaking reaction shear stress.
5. heavy load high frequency sound electrohydraulic servo oscillation device of the work according to claim 1 under high centrifugal field, special
Sign is: being coupled between the piston rod of the hydraulic cylinder and the vibration table by connector, the hydraulic cylinder and the company
It is connected through a screw thread between fitting, the internal screw thread on the connector is provided with grooving, and eliminates connection by multiple gap screws that disappear
Gap is connect, is coupled between the connector and the vibration table by multiple distributions.
6. heavy load high frequency sound electrohydraulic servo oscillation device of the work according to claim 1 under high centrifugal field, special
Sign is: be provided with hydrostatic support between the piston rod of the hydraulic cylinder and the cylinder body of the hydraulic cylinder, the hydrostatic support with
Auxiliary oil pump connection, the auxiliary oil pump are arranged in basement.
7. heavy load high frequency sound electrohydraulic servo oscillation device of the work according to claim 1 under high centrifugal field, special
Sign is: the centrifuge includes the pivoted arm and drive system, and the drive shaft of the drive system is vertically arranged, the pivoted arm
Horizontally disposed, the both ends of the pivoted arm are respectively set there are two the hanging basket, and the vibration device and clump weight are fixed set respectively
It sets in two hanging baskets.
8. heavy load high frequency sound electrohydraulic servo oscillation device of the work according to claim 7 under high centrifugal field, special
Sign is: the drive shaft is fixed on machine hall bottom surface by being driven support upright, is provided with underground below the machine hall
Room, the high pressure fuel source and the drive system are arranged in the basement, and the ground of the machine hall is provided with and institute
The through-hole of basement connection is stated, the lower end of the drive shaft passes through the through-hole and the torque output end of the drive system connects
It connects.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820952202.XU CN208383411U (en) | 2018-06-20 | 2018-06-20 | Work the heavy load high frequency sound electrohydraulic servo oscillation device under high centrifugal field |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820952202.XU CN208383411U (en) | 2018-06-20 | 2018-06-20 | Work the heavy load high frequency sound electrohydraulic servo oscillation device under high centrifugal field |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414177A (en) * | 2018-06-20 | 2018-08-17 | 中国工程物理研究院总体工程研究所 | The heavy load high frequency sound electrohydraulic servo oscillation device being operated under high centrifugal field |
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2018
- 2018-06-20 CN CN201820952202.XU patent/CN208383411U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414177A (en) * | 2018-06-20 | 2018-08-17 | 中国工程物理研究院总体工程研究所 | The heavy load high frequency sound electrohydraulic servo oscillation device being operated under high centrifugal field |
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