CN110487498A - A kind of controlled source hybrid vibration isolation experimental provision - Google Patents
A kind of controlled source hybrid vibration isolation experimental provision Download PDFInfo
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- CN110487498A CN110487498A CN201810478384.6A CN201810478384A CN110487498A CN 110487498 A CN110487498 A CN 110487498A CN 201810478384 A CN201810478384 A CN 201810478384A CN 110487498 A CN110487498 A CN 110487498A
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- controlled source
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- vibration isolation
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- 238000002955 isolation Methods 0.000 title claims abstract description 36
- 238000013461 design Methods 0.000 claims abstract description 31
- 238000011160 research Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 5
- 238000004088 simulation Methods 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 claims 1
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 10
- 230000005284 excitation Effects 0.000 abstract description 6
- 239000000956 alloy Substances 0.000 abstract description 2
- 238000013016 damping Methods 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
Abstract
The design of the invention patent aims to solve the problem that excitation signal of the controlled source under low-frequency vibration distorts serious problem, to widen effective working frequency range range of controlled source.Because controlled source figure is huge, it is difficult to be done directly effective damping, improves surveying accuracy.For convenient in a series of controlled source low frequency vibration isolation research of labs, the present invention devises a kind of controlled source hybrid vibration isolation experimental provision based on KZ-28 type controlled source.The main part of experimental provision is all made of 7075# aluminum alloy materials, and different spring mass systems is constituted between lower plate and bottom plate and upper plate and lower plate by the spring of different characteristics, it is mounted with that modality vibration exciter carries out exciting and active vibration isolation respectively between lower plate and bottom plate, upper plate and lower plate simultaneously.The controlled source vibration isolation experimental provision has vibration characteristics similar with KZ-28 type controlled source, therefore the experimental study of low frequency vibration isolation can be carried out on the experimental provision, and research achievement can be applied in controlled source itself.
Description
Technical field
The invention patent be based on the vibration characteristics of KZ-28 type controlled source, design a kind of mixing of controlled source every
Jolt ramming experiment device, the device are used to carry out the low frequency vibration isolation research of controlled source in laboratory, and the achievement of research can be answered directly
Used in controlled source itself, to widen effective working frequency range range of controlled source.
Background technique
The workflow of controlled source is that the linearly or nonlinearly sine FM that electric-control system setting requirements generate first is believed
Number, signal is amplified by electrohydraulic servo system, while controlling the unlatching of servo main valve, and vibrator receives signal, high-pressure and hydraulic
The pendulum of oil driving vibrator moves reciprocatingly, and causes connecting with piston rod and car body to shake therewith with ground face contact plate
It is dynamic, thus by the incoming the earth of the excitation signal of generation.
Controlled source during excitation signal be easy by itself mechanical, hydraulic, servo-control system, bottom plate with greatly
The influence of near surface coupled system and some random factors between ground causes the excitation signal for being input to ground to occur abnormal
Become.This variation will lead to the signal-to-noise ratio decline of excitation signal, to influence the operation effectiveness of geological prospecting.Therefore improving can
The low frequency excitation signal quality of control focus can widen the working frequency range of controlled source.
At present controlled source using passive vibration isolation vibration isolation way, i.e., between vibrator and Controlled Source Car car body
It is separated by air spring, to realize the isolation to coherent vibrational, the passive vibration isolation system constituted using air spring is most
Manage it is at low cost, realize it is simple, it is easy to maintain, but according to passive vibration isolation correlation theories knowledge, only when the work frequency of vibrator
When rate is significantly larger than the intrinsic frequency of controlled source, ideal vibration isolating effect can be just obtained, it might even be possible to more than 95%.And with
The working frequency of vibrator when moving closer to the intrinsic frequency of controlled source, passive vibration isolation device then close to entirely ineffective,
Resonance effects instead can amplify vibration.
Summary of the invention
The design object and prime design requirement of the design is as follows: (1) experimental provision should have with KZ-28 type controlled source
There is identical vibration physical characteristic, therefore experimental provision should use single-degree of freedom vibration model, and its intrinsic frequency should
It is 2.57Hz, at least intrinsic frequency should be close to 2.57Hz；(2) design of experimental provision should fully consider and utilize real
The exciting ability of the JZ-010 type that the existing exciting force in room is 100N and two vibration excitors of JZ-002 type that exciting force is 20N is tested,
To obtain the experiment conclusion for being best suitable for KZ-28 type controlled source actual conditions；(3) experimental provision should be able to carry out various
The experimental study of vibration isolation way realizes making full use of for experimental provision.
Itself with regard to controlled source, the car body of controlled source be by spring pressure on a shaker, the vibration of vibrator
Dynamic to have passed to car body by spring, spring plays passive vibration isolation device.Therefore the single-degree-of-freedom mass-spring system of device
It should be secured on a vibrating body, exciting carried out to vibrating body, vibration passes to the mass block for representing car body via spring,
Here it is the vibrations of spring mass system.That we to be studied on experimental provision is the vibration spy for representing the mass block of car body
Property and what kind of vibration isolation way just the vibration of mass block can be made as small as possible using, mass block is close to as static load at this time
Lotus is pressed on vibrating body.For KZ-28 type controlled source, be exactly car body close to as dead load pressure on a shaker,
This ensures that all energy of vibrator pass to the earth in the form of seismic wave, to reduce the distortion of seismic wave, improve
The quality of exploration.
The core of designed controlled source hybrid vibration isolation experimental provision is by upper and lower two pieces of square plates and support
Four springs of every block of plate form, and upper plate represents the car body of KZ-28 type controlled source, and the spring between upper plate and lower plate is suitable
In the isolation spring of controlled source.The single-degree-of-freedom spring mass system of the support spring of upper plate and upper plate composition is experiment dress
The research object set；The single-degree-of-freedom spring mass system of the support spring of lower plate and lower plate composition is the exciting of experimental provision
Part.Why upper plate and lower plate be designed to that square is to guarantee its symmetry, this helps to ensure that model only perpendicular
Histogram does single-degree of freedom vibration, accurate simulation of the realization device to focus actual vibration upwards.Exciting force is the JZ-010 of 100N
Type vibration excitor is used to carry out exciting to the exciting part of experimental provision.The JZ-002 type vibration excitor that exciting force is 20N is as actively
The actuator of vibration isolation is used to carry out active vibration isolation research to upper plate (car body).The actuator of active vibration isolation is fixed on bracket,
Bracket is fixed on the bottom plate of experimental provision.In order to guarantee that entire model only does single-degree of freedom vibration in vertical direction, in lower plate
Keep spring form and guarantee lower plate and upper plate can only be in the guiding of vertical direction vibration with securing four on bottom plate respectively
Bar.In order to make guide rod have vibration guide function well to upper plate and lower plate, the thickness design of upper and lower plates is 20mm.In order to
Guaranteeing entire model support part has enough rigidity, and also Uniting is 20mm to the thickness of bracket and bottom plate.In order to make up and down
Plate and whole device have lesser quality, and upper and lower plates, executor support, bottom plate and guide rod are all made of 7075# aluminum alloy materials
It is made.In order to guarantee that bottom plate is in horizontality and can be stablely supported on workbench, each angle on floor is installed respectively
Height-adjustable support foot.
The advantages of the design, is: (1) hybrid vibration isolation experimental provision designed by and being now widely used in geological prospecting
The vibration characteristics of KZ-28 type controlled source be consistent substantially；(2) one carried out on designed controlled source experimental provision
The Experiment Result of serial low frequency vibration isolation can be applied in controlled source itself, have certain portability.
Detailed description of the invention
Fig. 1 is experimental provision lower plate design drawing.
Fig. 2 is experimental provision upper plate design drawing.
Fig. 3 is experimental provision upper layer spring supporting bar design drawing.
Fig. 4 is experimental provision lower layer spring supporting bar design drawing.
Fig. 5 is experimental provision horizontal supporting plate design drawing.
Fig. 6 is experimental provision spring bearer plate design drawing.
Fig. 7 is experimental provision vertical support plate design drawing.
Fig. 8 is experimental provision back-plane design figure.
Fig. 9 is experimental provision whole design figure.
Specific embodiment
The following further describes the present invention with reference to the drawings, and wherein trimming involved in figure, drilling are Ra 12.5mm；
Technical requirements: 1, processing rear surface is answered smooth, must not there is buckling deformation；2, the manufacturing tolerance of bolt hole and other parts is distinguished
By the n grade and c grades of execution in GB/T18042；3, it is blunt that corner angle are not infused.
Fig. 1 is experimental provision lower plate design drawing.Material is 7075# aluminium alloy.In view of the size of JZ-010 type vibration excitor,
The size of spring conductor rod and spring, lower plate are designed and sized to 340*340*20mm, in order to make whole device have lesser matter
Amount, cuts out the hole that four radiuses are 50mm on symmetrical position, and the plate quality of lower plate is 4.71kg.The spring of upper plate is oriented to
Bar is fixed in lower plate, and the diameter of guide rod is 8mm, a height of 270mm, and the quality of four guide rods is 0.61kg, therefore lower plate
Mass-spring system quality be 5.32kg.
Fig. 2 is experimental provision upper plate design drawing.Material is 7075# aluminium alloy.In view of the size of JZ-002 type vibration excitor,
The size of spring conductor rod and spring, upper plate are designed and sized to 240*240*20mm, in order to make whole device have lesser matter
Amount cuts out the hole that four radiuses are 30mm, the quality of upper plate, that is, the mass-spring system of upper plate on symmetrical position
Quality be 2.59kg.
Fig. 3 is experimental provision upper layer spring supporting bar design drawing.Material is 7075# aluminium alloy.Structure between upper plate and lower plate
At spring mass system select spring be power department lark LCM 160K 05S, outer diameter 21.590mm, internal diameter 18.390mm,
Line footpath 1.600mm supports shank diameter 17.500mm, drift 240.004mm, rigidity 0.38N/mm.Be computed spring is quiet
Load decrement 16.70mm.Length is 222.30mm, the bullet for respectively having 4mm to be loaded into upper and lower plates up and down after dead load compression
In spring fixation hole, spring residue length is 215.30mm, therefore the distance between upper and lower plates are 215.00mm, in addition upper and lower plate thickness
The 15mm surplus that degree and upper end are reserved, the whole length of the spring conductor rod of upper plate are 270mm.In view of support shank diameter is
17.500mm, the diameter design of spring conductor rod are 16.00mm.The lower end of guide rod is fixed in lower plate, it is necessary to assure under
Plate surface is vertical, and to have enough fixing intensities.The upper end of bar is stretched out from the guiding circular hole of upper plate, and constraint upper plate only exists
Single-degree of freedom vibration is carried out on vertical direction.The surface of bar and the guiding hole surface of upper plate will be made as far as possible smooth, be rubbed with reducing
Wipe resistance.
Fig. 4 is experimental provision lower layer spring supporting bar design drawing.Material is 7075# aluminium alloy.Structure between upper plate and lower plate
At spring mass system select spring be power department lark LC 135L 08M, outer diameter 24.637mm, internal diameter 17.779mm, line
Diameter 3.429mm supports shank diameter 17.145mm, drift 101.600mm, rigidity 10.40N/mm.Be computed spring is quiet
Load decrement 1.87mm.Length is 97.73mm after dead load compression, respectively has 5mm to be loaded into spring fixed hole up and down
Interior, spring residue length is 89.73mm, and the height of JZ-010 type vibration excitor is 190.00mm, is stayed between vibration excitor and upper plate
The gap of 25.00mm, therefore the distance between upper and lower plates are 215.00mm, in addition more than the 15mm that lower plate thickness and upper end are reserved
Amount, the total height of the spring conductor rod of lower plate are 270.00mm.Due to static load compress and install after spring residue length about
90.00mm is less than the distance between upper and lower plates, therefore lower plate spring conductor rod is designed to ladder circle column, and lower section is thick, upper end
Carefully.In view of support shank diameter is 17.145mm, the diameter design of spring conductor rod upper section is 16.00mm, a height of
125.00mm.Lower section height is 145.00mm, and lower end diameter is designed as 60.00mm.Diameter design is that 60.00mm is in order to just
In in the plane at ladder position for lower spring end being fixed on bar.
Fig. 5 is experimental provision horizontal supporting plate design drawing.Material is 7075# aluminium alloy.It is used to support and fixes JZ-002
Type vibration excitor.According to the fixed form and volume of JZ-002 type vibration excitor, the size for devising support plate is 500mm*130mm*
The screw hole of fixed JZ-002 type vibration excitor has been reserved in 20mm, support plate corresponding position.
Fig. 6 is experimental provision spring bearer plate design drawing.Material is 7075# aluminium alloy.For fixed spring, prevent experiment from filling
It sets when carrying out exciting vibration isolation experiment because spring generates displacement to influence experiment effect.The design of spring bearer plate fully considers
The size of two kinds of selected springs, can play good fixed effect.
Fig. 7 is experimental provision vertical support plate design drawing.Material is 7075# aluminium alloy.Having a size of 290*130*20mm.With
In horizontal supporting plate shown in fig. 5 is lifted to certain altitude, so that it is high so that JZ-002 type vibration excitor is located at most suitable work
Degree.Vertical support plate top and bottom end have been reserved and the fixed interface of horizontal supporting plate and bottom plate.
Fig. 8 is experimental provision back-plane design figure.Material is 7075# aluminium alloy.Having a size of 620*380*20mm.As entire
The pedestal of experimental provision, while fixed JZ-010 type vibration excitor, lower plate spring conductor rod and vertical support plate, and devise ground
Face pedestal.
According to theoretical calculation, the upper plate and lower plate of designed controlled source hybrid vibration isolation experimental provision, lower plate and bottom plate
The intrinsic frequencies of two spring mass systems be respectively 3.86Hz and 14.08Hz.Therefore spring mass system between upper plate lower plate
Intrinsic frequency approached the intrinsic frequency of KZ-28 type controlled source, the intrinsic frequency of spring mass system is then between lower plate bottom plate
Working range as far as possible far from the low frequency excited frequency tested.In conclusion the design complies fully with experiment needs.
Claims (5)
1. a kind of controlled source hybrid vibration isolation experimental provision, controllable with the KZ-28 type of extensive utilization in current petroleum exploration domain
Based on the vibration characteristics of focus, the experimental provision that can carry out controlled source low frequency vibration isolation research in the lab is devised.Institute
The core of the controlled source hybrid vibration isolation experimental provision of design is every by two vibration excitors, upper and lower two pieces of square plates, support
Four springs of block plate form.
2. controlled source hybrid vibration isolation experimental provision as described in claim 1 vibration characteristics similar with KZ-28 type controlled source.
3. two vibration excitor JZ-010 type vibration excitors of controlled source hybrid vibration isolation experimental provision as described in claim 1 are used to give
The exciting part of experimental provision carries out exciting, exciting force 100N.JZ-002 type vibration excitor swashs as the actuator of active vibration isolation
Vibration power is 20N, is used to carry out active vibration isolation research to upper plate (car body).
4. controlled source hybrid vibration isolation experimental provision as described in claim 1, by every block of plate of upper and lower two pieces of square plates and support
Four springs composition.Upper plate represents the car body of KZ-28 type controlled source, and the spring between upper plate and lower plate is equivalent to controllable shake
The isolation spring in source.The single-degree-of-freedom spring mass system of the support spring of upper plate and upper plate composition is the research pair of experimental provision
As；The single-degree-of-freedom spring mass system of the support spring of lower plate and lower plate composition is the exciting part of experimental provision.
5. the upper plate and lower plate of controlled source hybrid vibration isolation experimental provision as described in claim 1 are designed to square, purpose
It is to guarantee its symmetry, this helps to ensure that model only does single-degree of freedom vibration in the vertical direction, and realization device is to focus reality
The accurate simulation of border vibration.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810478384.6A CN110487498A (en) | 2018-05-15 | 2018-05-15 | A kind of controlled source hybrid vibration isolation experimental provision |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810478384.6A CN110487498A (en) | 2018-05-15 | 2018-05-15 | A kind of controlled source hybrid vibration isolation experimental provision |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008082936A (en) * | 2006-09-28 | 2008-04-10 | Imv Corp | Vibration testing system |
| CN104713721A (en) * | 2015-04-10 | 2015-06-17 | 株洲时代新材料科技股份有限公司 | Dynamic performance test platform of vibration isolator system and test method thereof |
| CN105259580A (en) * | 2015-10-30 | 2016-01-20 | 中国石油大学(北京) | Low-frequency extension method for vibroseis signal |
-
2018
- 2018-05-15 CN CN201810478384.6A patent/CN110487498A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008082936A (en) * | 2006-09-28 | 2008-04-10 | Imv Corp | Vibration testing system |
| CN104713721A (en) * | 2015-04-10 | 2015-06-17 | 株洲时代新材料科技股份有限公司 | Dynamic performance test platform of vibration isolator system and test method thereof |
| CN105259580A (en) * | 2015-10-30 | 2016-01-20 | 中国石油大学(北京) | Low-frequency extension method for vibroseis signal |
Non-Patent Citations (2)
| Title |
|---|
| 李淑清: "KZ-28型可控震源高精度隔振系统研究", 《天津科技大学学报》 * |
| 李琴等: "精密可控震源隔振系统参数优化设计", 《工程设计学报》 * |
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Application publication date: 20191122 |