CN114001894A - Building structure interference effect experimental device - Google Patents
Building structure interference effect experimental device Download PDFInfo
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- CN114001894A CN114001894A CN202111278384.XA CN202111278384A CN114001894A CN 114001894 A CN114001894 A CN 114001894A CN 202111278384 A CN202111278384 A CN 202111278384A CN 114001894 A CN114001894 A CN 114001894A
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- 230000000694 effects Effects 0.000 title claims abstract description 37
- 238000002474 experimental method Methods 0.000 claims abstract description 38
- 238000012360 testing method Methods 0.000 claims abstract description 37
- 238000001125 extrusion Methods 0.000 claims description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000011358 absorbing material Substances 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000011900 installation process Methods 0.000 abstract description 4
- 239000010687 lubricating oil Substances 0.000 description 72
- 239000003921 oil Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 239000012466 permeate Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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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
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
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Abstract
The invention belongs to the technical field of building experiment devices, and particularly relates to a building structure interference effect experiment device which comprises an experiment table; the testing device comprises a testing table, a vibration model, a rotary ring, an annular sleeve, a magnetic plate, a linear motor, a vibration rod and a testing model, wherein the vibration model is arranged in the middle of the top surface of the testing table, the vibration holes are respectively formed in the middle of the bottom surface of the vibration model and the corresponding testing table, the annular grooves are respectively formed in the top surface and the bottom surface of the testing table at the vibration model, the annular grooves in the top surface and the bottom surface of the testing table are respectively connected with the inner part of the rotary ring and the annular sleeve in a rotating mode, the magnetic plate is respectively embedded and installed at the bottom end of the rotary ring and the top end of the annular sleeve, the linear motor is arranged in the annular sleeve, the end part of the linear motor is connected with the vibration rod, and the testing model is arranged on one side of the vibration model; the invention can conveniently, quickly and quickly adjust the working angle of the vibration generating device, improve the working efficiency of the experimental device and simplify the internal structure and the installation process of the annular sleeve.
Description
Technical Field
The invention belongs to the technical field of building experiment devices, and particularly relates to a building structure interference effect experiment device.
Background
The dense super high-rise building group is one of important marks of modern metropolis, the pneumatic interference effect among the group high-rise buildings is very complex, and although people carry out a great deal of research on the pneumatic interference effect among the group high-rise buildings, the defects still exist. For example, the wind-induced interference effect of a building when the building vibrates (unsteady effect) is not clear, and the existing experimental device can not be equivalent when the existing experimental device generates the interference effect on a building group.
A chinese patent with publication number CN112562483B discloses an experimental apparatus for building structure interference effect under the influence of forced vibration, which comprises an experimental table located in a wind field, wherein a circular through hole is formed in the center of the experimental table, a vibration model is fixed at the center of the experimental table, the through hole is covered by the vibration model, a vibration hole is formed at the bottom of the vibration model, and the diameter of the vibration hole is smaller than that of the through hole; the test bench is also provided with a test model, and the test model and the vibration model are both provided with a vibration sensor and a wind pressure sensor; the vibration generating device is arranged at the bottom of the experiment table and comprises a base arranged on the lower surface of the experiment table, a horizontal sliding groove is formed in the base, a sliding seat is connected in the sliding groove in a sliding manner, symmetrically arranged springs are fixed on two sides of the sliding seat and are parallel to the sliding groove, and the free ends of the springs are fixed on the sliding seat; the invention aims to solve the problem that the existing experimental device cannot simulate the wind-induced interference effect under the condition of vibration of a building group.
But the vibration generating device among the above-mentioned technique carries out work angle's regulation to when improving building crowd wind-induced interference effect's analysis accuracy, because the annular plate sets up in the laboratory bench bottom, make the staff be difficult to convenient and fast rotate the annular plate, influence the convenience of experimental apparatus when the operation.
Therefore, the invention provides an experimental device for the interference effect of a building structure.
Disclosure of Invention
To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an experimental device for the interference effect of a building structure, which comprises an experimental table positioned in a wind field; the testing device comprises a testing table, a vibration model, a rotary ring, a ring sleeve, a magnetic plate, a linear motor, a vibrating rod, a vibration sensor and a wind pressure sensor, wherein the vibration model is arranged in the middle of the top surface of the testing table, vibration holes which are communicated with each other are respectively formed in the middle of the bottom surface of the vibration model and the corresponding testing table, ring grooves are respectively formed in the top surface and the bottom surface of the testing table at the vibration model, ring grooves are respectively formed in the top surface and the bottom surface of the testing table, the ring grooves on the top surface and the bottom surface of the testing table are respectively connected with the rotary ring and the ring sleeve in a rotating mode, the magnetic plates are respectively embedded and installed at the bottom end of the rotary ring and the top end of the ring sleeve, two groups of magnetic plates are opposite in magnetic poles at one end which are close to each other, the linear motor is arranged in the ring sleeve, the end part of the linear motor is connected with the vibrating rod which penetrates through the vibration holes, the vibration model is arranged on one side of the testing model, and the vibration model and the wind pressure sensor are arranged on the testing model; when the vibration generating device in the prior art adjusts the working angle to improve the analysis precision of the wind-induced interference effect of a building group, the annular plate is arranged at the bottom of the experiment table, so that a worker cannot conveniently and quickly rotate the annular plate, and the convenience of the experiment device in operation is influenced; when the experimental device is used, the rotary ring and the annular sleeve can be stably fixed in the two annular grooves due to the mutual attraction of the rotary ring and the magnetic plates on the annular sleeve, the linear motor can drive the vibrating rod to perform reciprocating impact on the side wall of the vibrating hole at the position of the vibrating model when in work, so that the vibrating model is forced to vibrate, the test model is influenced to vibrate at the moment, the vibrating model and the test model are detected by the vibration sensor and the wind pressure sensor, the wind pressure strength and the vibration strength of the surfaces of the vibrating model and the test model are collected under the vibrating condition, and further the wind-induced interference effect among building groups under the vibrating condition can be simulated and analyzed, when the position of the linear motor needs to be adjusted, only the rotary ring on the top surface of the experimental table needs to be rotated, so that the rotary ring can pass through the magnetic plates mutually attracted when in rotation, the driving ring sleeve rotates in the corresponding ring groove, so that the working angle of the vibration generating device inside the ring sleeve can be conveniently and quickly adjusted, the working efficiency of the experimental device is improved, the attraction of the two magnetic plates can overcome the gravity of the ring sleeve, the ring sleeve does not need to be provided with a limiting mechanism in the vertical direction during working, and the internal structure and the installation process of the ring sleeve are simplified.
Preferably, electric push rods are symmetrically arranged on the bottom surfaces of the experiment tables corresponding to the two sides of the annular sleeve, the end parts of the electric push rods are respectively connected with semi-annular plates matched with the outer wall of the annular sleeve in shape, and the rotary ring and the magnetic plates on the annular sleeve are respectively and uniformly distributed in an annular shape; after the working angle regulation of annular cover finishes, electric putter can drive the semiannular board this moment and be close to each other, and press from both sides tightly the annular cover, the stability of annular cover at the during operation has been improved, simultaneously when needs are dismantled the annular cover from the ring channel, only need rotate the change this moment, make the magnetic plate on the change misplace each other and no longer adsorb with the magnetic plate on the annular cover, later when the semiannular board no longer carries out the centre gripping spacing to the annular cover, the ring channel automatic break away from can be followed to the annular cover this moment, thereby make things convenient for the dismantlement and the maintenance of annular cover.
Preferably, the middle parts of the end surfaces of the rotating ring and the annular sleeve, which are close to each other, are respectively and rotatably connected with a plurality of spherical balls; when the rotating ring and the annular sleeve move in the corresponding annular groove, the balls can be driven to roll on the end face of the annular groove, and the friction resistance between the rotating ring and the annular sleeve and between the rotating ring and the annular groove is reduced, so that the rotating ring and the annular sleeve can move more easily and stably.
Preferably, the top of the annular groove on the top surface of the experiment table is provided with an annular guide cavity, the opening of the guide cavity is gradually enlarged from inside to outside, a plurality of groups of oil leakage grooves which are communicated with the end parts of the two annular grooves and symmetrically distributed are formed in the experiment table, and the side walls of the oil leakage grooves are flush with the side walls of the annular grooves; lubricating oil is injected into the guide cavity in advance, so that the lubricating oil gradually permeates into the bottom end of the top annular groove from a gap between the rotating ring and the annular groove when the rotating ring and the annular groove move relatively, and flows into the top of the bottom annular groove through the oil leakage groove, so that the rotating ring, the annular sleeve and the side wall of the annular groove can be lubricated, and the friction resistance of the rotating ring and the annular sleeve when the rotating ring and the annular sleeve move relatively to the annular groove is reduced.
Preferably, the top surface of the side wall of the annular sleeve, which is close to the experiment table, is connected with an annular collecting sleeve, and a recovery tank is arranged on the side wall of the annular sleeve, which corresponds to the bottom end of the collecting sleeve; after the annular sleeve rotates repeatedly, the lubricating oil which flows along the annular groove in a slowly downward penetrating mode can flow to the collecting sleeve and flow back to the inside of the annular sleeve through the recovery tank, so that the lubricating oil can be collected, the pollution of the lubricating oil to the ground is reduced, and the lubricating oil can be used in a reciprocating mode.
Preferably, the side wall inside the annular sleeve is rotatably connected with a rotating plate through a torsion spring, the bottom ends of the semi-annular plate and the rotating plate are respectively made of magnetic materials, and the semi-annular plate can repel the bottom end of the rotating plate when being close to the bottom end of the rotating plate, the top end of the rotating plate extends into the vibration hole on the experiment table and is fixedly connected with a sliding sleeve, one end of the sliding sleeve, which is close to the vibrating rod, is connected with a sliding block in a sliding way, an elastic part is connected between the sliding block and the end part of the sliding sleeve, and an extrusion block is arranged in a cavity between the sliding block and the end part of the sliding sleeve, the extrusion block is connected with the bottom end of the annular sleeve through a conveying strip, the extrusion block and the conveying strip are respectively made of water-absorbing materials, a collecting groove communicated with the inside of the sliding sleeve is formed in the side wall of the vibration hole corresponding to one side of the sliding sleeve, and a flow guide groove communicated with the collecting groove and the guide cavity is formed in the experiment table; carry the strip can carry the inside lubricating oil of collecting of annular cover to the extrusion piece in, when the annular cover needs work and semi-annular board to its centre gripping, the semi-annular board that is close to this moment can repel mutually with changeing the board bottom, thereby make commentaries on classics board top drive sliding sleeve and slider synchronous motion, the slider can extrude the extrusion piece under inertial effect simultaneously, make its inside lubricating oil flow into the direction chamber through the guiding gutter of collecting vat department after being extruded, thereby make the lubricating oil of collecting in the collection cover can automatic transmission to the water conservancy diversion chamber in reuse, and when semi-annular board kept away from the annular cover, the commentaries on classics board can extrude the lubricating oil in the extrusion piece through the slider once more when reseing this moment, the reuse effect of lubricating oil has further been improved.
Preferably, the top end of the conveying strip is arranged on one side, close to the sliding block, of the bottom surface of the sliding sleeve, and the top end of the conveying strip is flush with the inner wall of the bottom surface of the sliding sleeve; when the slider extrudees the extrusion piece under self inertial effect, the slider at first slides the conveying strip top to carry out the shutoff to its top, make the inside extrusion piece of conveying strip and sliding sleeve no longer communicate, thereby when reducing subsequent extrusion piece and being extruded, the condition of lubricating oil from conveying strip department backward flow, thereby make the lubricating oil in the extrusion piece can more abundant utilization.
Preferably, the guide cavities on two sides of the top end of the rotating ring are respectively provided with a conveying block, a connecting strip for connecting the two conveying blocks is arranged inside the rotating ring, the conveying blocks and the connecting strip are respectively made of water-absorbing materials, and the side wall of the guide cavity far away from the sliding sleeve is provided with pressing blocks which are uniformly distributed in an annular manner; when lubricating oil in the extrusion piece flows into one side that the guide cavity is close to the sliding sleeve from the guiding gutter, the transport piece of this department can pass through the connecting strip this moment, carry lubricating oil to the guide cavity and keep away from the transport piece of sliding sleeve in, when subsequent change takes place to rotate, the briquetting can carry out intermittent type nature extrusion to the transport piece of keeping away from the sliding sleeve, thereby can extrude its inside lubricating oil to the guide cavity and keep away from a department of surveying of sliding sleeve, make the interior outer both sides wall of the ring channel of change department all filled with lubricating oil, the homogeneity of subsequent change and ring channel lateral wall when lubricated has been improved.
Preferably, the elastic part is in an arc sheet shape, the middle part of the elastic part protrudes upwards, the extrusion block is positioned in a sliding sleeve cavity at the top end of the elastic part, and the surface of the elastic part is provided with a plurality of flow guide holes; when the slider extrudees the extrusion piece under inertial effect, the elastic component middle part was upwards arched under the extrusion of slider this moment, and the lubricating oil in the extrusion piece can follow water conservancy diversion hole flow direction elastic component bottom simultaneously, and the elastic component can be isolated with the extrusion piece with the lubricating oil of extruding this moment, the outflow of the lubricating oil of being convenient for.
Preferably, the opening of the flow guide hole is gradually enlarged from one end close to the extrusion block to one end far away from the extrusion block, an elastic blocking ball is connected in the flow guide hole through a pull rope, and a gap is reserved between the blocking ball and the flow guide hole; extrude to the elastic component bottom when lubricating oil, and the slider is at the in-process that resets, the elastic component extends under the drive of slider this moment, and drive shutoff ball and the extrusion of sliding sleeve bottom surface laminating, thereby can impress the shutoff ball inside the water conservancy diversion downthehole portion, and carry out the shutoff to the water conservancy diversion hole, reduce the lubricating oil that the elastic component bottom was extruded and pass through water conservancy diversion hole and extrusion piece contact, and by the condition that the extrusion piece reabsorbed, closed elastic component also can extrude the lubricating oil of its bottom to the collecting vat when the extension simultaneously, thereby further promote the outflow of lubricating oil in the extrusion piece.
The invention has the following beneficial effects:
1. according to the invention, the rotating ring for driving the annular sleeve to move is arranged on the top surface of the experiment table, so that the working angle of the vibration generating device inside the annular sleeve can be conveniently, quickly and quickly adjusted, the working efficiency of the experiment device is improved, and meanwhile, the annular sleeve is not required to be provided with a limiting mechanism in the vertical direction during working, so that the internal structure and the installation process of the annular sleeve are simplified.
2. When the annular sleeve needs to be detached from the annular groove, the rotary ring is only required to be rotated at the moment, so that the magnetic plate on the rotary ring and the magnetic plate on the annular sleeve are staggered and do not adsorb any more, and then when the semi-annular plate does not clamp and limit the annular sleeve any more, the annular sleeve can be automatically separated from the annular groove at the moment, so that the annular sleeve is convenient to detach and maintain.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is an enlarged view at B in FIG. 3;
FIG. 5 is a schematic view of the swivel according to the present invention;
FIG. 6 is a schematic structural view of the sliding sleeve according to the second embodiment;
in the figure: the test bed comprises a test bed 1, a vibration model 2, a vibration hole 3, an annular groove 4, a rotary ring 5, an annular sleeve 6, a magnetic plate 7, a linear motor 8, a vibration rod 9, a test model 10, an electric push rod 11, a semi-annular plate 12, a ball 13, a guide cavity 14, an oil leakage groove 15, a collection sleeve 16, a recovery groove 17, a rotary plate 18, a sliding sleeve 19, a sliding block 20, an elastic piece 21, an extrusion strip 22, a conveying strip 23, a collection groove 24, a flow guide groove 25, a conveying block 26, a connecting strip 27, a pressing block 28, a flow guide hole 29 and a blocking ball 30.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-2, an experimental apparatus for interference effect of building structure according to an embodiment of the present invention includes an experimental bench 1 located in a wind farm; the middle part of the top surface of the experiment table 1 is provided with a vibration model 2, the middle part of the bottom surface of the vibration model 2 and the corresponding experiment table 1 are respectively provided with a vibration hole 3 which are communicated with each other, the top surface and the bottom surface of the experiment table 1 at the vibration model 2 are respectively provided with an annular groove 4, and the inner parts of the annular grooves 4 positioned on the top surface and the bottom surface of the experiment table 1 are respectively and rotatably connected with a rotating ring 5 and an annular sleeve 6, the bottom end of the rotating ring 5 and the top end of the annular sleeve 6 are respectively embedded with a magnetic plate 7, and the magnetic poles of the two groups of magnetic plates 7 at the ends close to each other are opposite, a linear motor 8 is arranged inside the annular sleeve 6, the end part of the linear motor 8 is connected with a vibrating rod 9 which penetrates through the vibrating hole 3, a test model 10 is arranged on the experiment table 1 at one side of the vibrating model 2, the vibration model 2 and the test model 10 are both provided with a vibration sensor and a wind pressure sensor; when the vibration generating device in the prior art adjusts the working angle to improve the analysis precision of the wind-induced interference effect of a building group, the annular plate is arranged at the bottom of the experiment table 1, so that a worker cannot conveniently and quickly rotate the annular plate, and the convenience of the experiment device in operation is influenced; when the experimental device is used, the rotary ring 5 and the annular sleeve 6 can be stably fixed in the two annular grooves 4 due to the mutual attraction of the magnetic plates 7 on the rotary ring 5 and the annular sleeve 6, the linear motor 8 can drive the vibrating rod 9 to perform reciprocating impact on the side wall of the vibrating hole 3 at the vibrating model 2 when in work, so that the vibrating model 2 is forced to vibrate, the test model 10 is influenced to vibrate at the moment, the vibrating model 2 and the test model 10 are detected by adopting the vibrating sensor and the wind pressure sensor, so that the wind pressure intensity and the vibration intensity on the surfaces of the vibrating model 2 and the test model 10 are collected under the vibration condition, further the wind-induced interference effect between building groups under the vibration condition can be simulated and analyzed, when the position of the linear motor 8 needs to be adjusted, only the rotary ring 5 on the top surface of the experimental table 1 needs to be rotated at the moment, make swivel 5 can be through the magnetic sheet 7 of inter attraction when rotating, drive annular sleeve 6 and rotate in corresponding ring channel 4, thereby can convenient and fast adjust 6 internal vibration generating device's of annular sleeve working angle, experimental apparatus's work efficiency has been improved, the gravity of annular sleeve 6 self can be overcome to the appeal of two magnetic sheets 7 simultaneously, make annular sleeve 6 need not set up the ascending stop gear of vertical side again at the during operation, thereby the inner structure and the installation of annular sleeve 6 have been simplified.
As shown in fig. 2 and 5, electric push rods 11 are symmetrically installed on the bottom surfaces of the experiment table 1 corresponding to the two sides of the annular sleeve 6, the end parts of the electric push rods 11 are respectively connected with semi-annular plates 12 matched with the outer wall of the annular sleeve 6 in shape, and the rotary ring 5 and the magnetic plates 7 on the annular sleeve 6 are respectively and uniformly distributed in an annular shape; after the working angle regulation of annular cover 6 finishes, electric putter 11 can drive semicircular plate 12 and be close to each other this moment, and press from both sides ring cover 6 tightly, the stability at the during operation of ring cover 6 has been improved, simultaneously when needs are dismantled annular cover 6 from ring channel 4, only need rotate swivel 5 this moment, make magnetic plate 7 on swivel 5 and the magnetic plate 7 on the annular cover 6 misplace each other and no longer adsorb, later when semicircular plate 12 no longer carries out the centre gripping spacing to ring cover 6, ring channel 4 automatic break away from can be followed to annular cover 6 this moment, thereby make things convenient for the dismantlement and the maintenance of annular cover 6.
As shown in fig. 2-4, the middle parts of the end surfaces of the rotating ring 5 and the annular sleeve 6, which are close to each other, are respectively and rotatably connected with a plurality of spherical balls 13; when the rotating ring 5 and the annular sleeve 6 move in the corresponding annular groove 4, the balls 13 can be driven to roll on the end surface of the annular groove 4, so that the friction resistance between the rotating ring 5 and the annular sleeve 6 as well as between the rotating ring 5 and the annular sleeve 4 is reduced, and the rotating ring 5 and the annular sleeve 6 can move more easily and stably.
An annular guide cavity 14 is arranged at the top of the annular groove 4 on the top surface of the experiment table 1, the opening of the guide cavity 14 is gradually enlarged from inside to outside, a plurality of groups of oil leakage grooves 15 which are symmetrically distributed and communicated with the end parts of the two annular grooves 4 are formed in the experiment table 1, and the side walls of the oil leakage grooves 15 are flush with the side walls of the annular groove 4; by injecting lubricating oil into the guide cavity 14 in advance, the lubricating oil gradually infiltrates into the bottom end of the top annular groove 4 from the gap between the rotary ring 5 and the annular groove 4 when the rotary ring moves relative to the annular groove 4, and flows into the top of the bottom annular groove 4 through the oil leakage groove 15, so that the rotary ring 5, the annular sleeve 6 and the side wall of the annular groove 4 can be lubricated, and the friction resistance when the rotary ring 5 and the annular sleeve 6 move relative to the annular groove 4 is reduced.
The top surface of the side wall of the annular sleeve 6 close to the experiment table 1 is connected with an annular collecting sleeve 16, and the side wall of the annular sleeve 6 corresponding to the bottom end of the collecting sleeve 16 is provided with a recovery groove 17; after the annular sleeve 6 rotates repeatedly, the lubricating oil which slowly permeates and flows downwards along the annular groove 4 can flow to the collecting sleeve 16 and flow back to the inside of the annular sleeve 6 through the recovery groove 17, so that the lubricating oil can be collected, the pollution of the lubricating oil to the ground is reduced, and the lubricating oil can be used repeatedly.
The side wall in the annular sleeve 6 is connected with a rotating plate 18 through a torsion spring in a rotating manner, the bottom ends of the semicircular plate 12 and the rotating plate 18 are respectively made of magnetic materials, the bottom end of the rotating plate 18 can be repelled when the semicircular plate 12 is close to the bottom end of the rotating plate 18, the top end of the rotating plate 18 extends into a vibration hole 3 on the experiment table 1 and is fixedly connected with a sliding sleeve 19, one end of the sliding sleeve 19, which is close to the vibration rod 9, is slidably connected with a sliding block 20, an elastic part 21 is connected between the sliding block 20 and the end part of the sliding sleeve 19, an extrusion strip 22 is arranged in a cavity between the sliding block 20 and the end part of the sliding sleeve 19, the extrusion strip 22 is connected with the bottom end of the annular sleeve 6 through a conveying strip 23, the extrusion strip 22 and the conveying strip 23 are respectively made of water absorbing materials, a collecting groove 24 communicated with the inside of the sliding sleeve 19 is formed in the side wall of the vibration hole 3 corresponding to one side of the sliding sleeve 19, a diversion trench 25 communicating the collecting trench 24 with the guide cavity 14 is formed in the experiment table 1; the conveying strip 23 can convey the lubricating oil collected inside the annular sleeve 6 to the extrusion strip 22, when the annular sleeve 6 needs to work and the semi-annular plate 12 clamps the annular sleeve, the semi-annular plate 12 close to the annular sleeve can repel the bottom end of the rotary plate 18 at the moment, so that the top end of the rotary plate 18 drives the sliding sleeve 19 and the sliding block 20 to move synchronously, meanwhile, the sliding block 20 can extrude the extrusion strip 22 under the action of inertia, the lubricating oil inside the rotary plate is extruded and then flows into the guide cavity 14 through the guide groove 25 at the collecting groove 24, the lubricating oil collected in the collecting sleeve 16 can be automatically transmitted to the guide cavity for reuse, and when the semi-annular plate 12 is far away from the annular sleeve 6, the rotary plate 18 can extrude the lubricating oil in the extrusion strip 22 through the sliding block 20 again when being reset, and the recycling effect of the lubricating oil is further improved.
The top end of the conveying strip 23 is arranged on one side, close to the sliding block 20, of the bottom surface of the sliding sleeve 19, and the top end of the conveying strip 23 is flush with the inner wall of the bottom surface of the sliding sleeve 19; when the sliding block 20 extrudes the extrusion strip 22 under the action of self inertia, the sliding block 20 firstly slides over the top end of the conveying strip 23 and seals the top end of the conveying strip, so that the conveying strip 23 is not communicated with the extrusion strip 22 in the sliding sleeve 19, the condition that lubricating oil flows back from the conveying strip 23 when the subsequent extrusion strip 22 is extruded is reduced, and the lubricating oil in the extrusion strip 22 can be more fully utilized.
The guide cavities 14 on the two sides of the top end of the rotating ring 5 are respectively provided with a conveying block 26, a connecting strip 27 for connecting the two conveying blocks 26 is arranged inside the rotating ring 5, the conveying blocks 26 and the connecting strip 27 are respectively made of water-absorbing materials, and the side wall of the guide cavity 14 far away from the sliding sleeve 19 is provided with pressing blocks 28 which are distributed annularly and uniformly; when the lubricating oil in the extrusion strip 22 flows into one side of the guide cavity 14 close to the sliding sleeve 19 from the diversion trench 25, the conveying block 26 at the position can convey the lubricating oil to the conveying block 26 of the guide cavity 14 far away from the sliding sleeve 19 through the connecting strip 27, and when the subsequent swivel 5 rotates, the pressing block 28 can intermittently extrude the conveying block 26 far away from the sliding sleeve 19, so that the lubricating oil in the swivel 5 can be extruded to one side of the guide cavity 14 far away from the sliding sleeve 19, the inner side wall and the outer side wall of the annular groove 4 at the position of the swivel 5 are filled with the lubricating oil, and the uniformity of the subsequent swivel 5 and the annular sleeve 6 side wall in the lubricating process is improved.
Example two:
as shown in fig. 6, a first comparative example, in which another embodiment of the present invention is: the elastic part 21 is arc-shaped and flaky, the middle part of the elastic part 21 protrudes upwards, the extrusion strip 22 is positioned in a cavity of the sliding sleeve 19 at the top end of the elastic part 21, and the surface of the elastic part 21 is provided with a plurality of flow guide holes 29; when the sliding block 20 extrudes the extrusion strip 22 under the action of inertia, the middle part of the elastic part 21 arches upwards under the extrusion of the sliding block 20, meanwhile, the lubricating oil in the extrusion strip 22 can flow to the bottom of the elastic part 21 from the diversion hole 29, and the elastic part 21 can isolate the extruded lubricating oil from the extrusion strip 22, so that the lubricating oil can flow out conveniently.
The opening of the guide hole 29 is gradually enlarged from one end close to the extrusion strip 22 to one end far away from the extrusion strip 22, an elastic blocking ball 30 is connected in the guide hole 29 through a pull rope, and a gap is reserved between the blocking ball 30 and the guide hole 29; when the lubricating oil is extruded to the bottom of the elastic part 21, and the sliding block 20 is in the process of resetting, at the moment, the elastic part 21 is extended under the driving of the sliding block 20, and the sealing ball 30 is driven to be attached and extruded with the bottom surface of the sliding sleeve 19, so that the sealing ball 30 can be pressed into the flow guide hole 29 and seals the flow guide hole 29, the situation that the lubricating oil extruded from the bottom of the elastic part 21 is in contact with the extrusion strip 22 through the flow guide hole 29 and is reabsorbed by the extrusion strip 22 is reduced, meanwhile, the lubricating oil at the bottom of the closed elastic part 21 can be extruded into the collecting groove 24 when the elastic part is extended, and the outflow of the lubricating oil in the extrusion strip 22 is further promoted.
The working principle is as follows: because the rotary ring 5 and the magnetic plate 7 on the annular sleeve 6 are mutually attracted, the rotary ring 5 and the annular sleeve 6 can be stably fixed in the two annular grooves 4, and the linear motor 8 can drive the vibrating rod 9 to carry out reciprocating impact on the side wall of the vibrating hole 3 at the position of the vibrating model 2 when in work, so that the vibrating model 2 is forced to vibrate, at the moment, the test model 10 is also influenced to vibrate, and then the vibrating model 2 and the test model 10 are detected by adopting the vibrating sensor and the wind pressure sensor, so that under the vibration condition, the wind pressure intensity and the vibration intensity on the surfaces of the vibrating model 2 and the test model 10 are collected, further the wind-induced interference effect between building groups under the vibration condition can be simulated and analyzed, when the position of the linear motor 8 needs to be adjusted, at the moment, only the rotary ring 5 on the top surface of the experiment table 1 needs to be rotated, so that the rotary ring 5 can pass through the mutually attracted magnetic plates 7 when in rotation, the annular sleeve 6 is driven to rotate in the corresponding annular groove 4, so that the working angle of the vibration generating device in the annular sleeve 6 can be conveniently and quickly adjusted, the working efficiency of the experimental device is improved, meanwhile, the attraction of the two magnetic plates 7 can overcome the gravity of the annular sleeve 6, the annular sleeve 6 does not need to be provided with a limiting mechanism in the vertical direction when in working, and the internal structure and the installation process of the annular sleeve 6 are simplified; after the working angle of the annular sleeve 6 is adjusted, the electric push rod 11 can drive the semi-annular plates 12 to approach each other and clamp the annular sleeve 6, so that the stability of the annular sleeve 6 in working is improved, meanwhile, when the annular sleeve 6 needs to be disassembled from the annular groove 4, only the rotating ring 5 needs to be rotated, so that the magnetic plates 7 on the rotating ring 5 and the magnetic plates 7 on the annular sleeve 6 are staggered and do not adsorb any more, and then when the semi-annular plates 12 do not clamp and limit the annular sleeve 6 any more, the annular sleeve 6 can automatically separate from the annular groove 4, so that the annular sleeve 6 is convenient to disassemble and maintain; when the rotary ring 5 and the annular sleeve 6 move in the corresponding annular grooves 4, the balls 13 can be driven to roll on the end surfaces of the annular grooves 4, so that the friction resistance between the rotary ring 5 and the annular sleeves 6 and 4 is reduced, and the rotary ring 5 and the annular sleeve 6 can move more easily and stably; lubricating oil is injected into the guide cavity 14 in advance, so that the lubricating oil gradually permeates into the bottom end of the top annular groove 4 from a gap between the rotary ring 5 and the annular groove 4 when the rotary ring 5 and the annular groove 4 move relatively, and flows into the top of the bottom annular groove 4 through the oil leakage groove 15, so that the rotary ring 5, the annular sleeve 6 and the side wall of the annular groove 4 can be lubricated, and the friction resistance when the rotary ring 5, the annular sleeve 6 and the annular groove 4 move relatively is reduced; after the annular sleeve 6 rotates repeatedly, the lubricating oil which slowly permeates and flows downwards along the annular groove 4 can flow to the collecting sleeve 16 and flow back to the inside of the annular sleeve 6 through the recovery groove 17, so that the lubricating oil can be collected, the pollution of the lubricating oil to the ground is reduced, and the lubricating oil can be recycled; the conveying strip 23 can convey the lubricating oil collected in the annular sleeve 6 to the extruding strip 22, when the annular sleeve 6 needs to work and the semi-annular plate 12 clamps the annular sleeve, the semi-annular plate 12 close to the annular sleeve can repel the bottom end of the rotating plate 18 at the moment, so that the top end of the rotating plate 18 drives the sliding sleeve 19 and the sliding block 20 to move synchronously, meanwhile, the sliding block 20 can extrude the extruding strip 22 under the action of inertia, the lubricating oil in the rotating plate 18 flows into the guide cavity 14 through the guide groove 25 at the collecting groove 24 after being extruded, the lubricating oil collected in the collecting sleeve 16 can be automatically transmitted to the guide cavity for reuse, and when the semi-annular plate 12 is far away from the annular sleeve 6, the rotating plate 18 can extrude the lubricating oil in the extruding strip 22 through the sliding block 20 again when being reset, and the recycling effect of the lubricating oil is further improved; when the sliding block 20 extrudes the extrusion strip 22 under the action of self inertia, the sliding block 20 firstly slides over the top end of the conveying strip 23 and seals the top end of the conveying strip, so that the conveying strip 23 is not communicated with the extrusion strip 22 in the sliding sleeve 19 any more, the condition that lubricating oil flows back from the conveying strip 23 when the subsequent extrusion strip 22 is extruded is reduced, and the lubricating oil in the extrusion strip 22 can be more fully utilized; when the lubricating oil in the extrusion strip 22 flows into one side of the guide cavity 14 close to the sliding sleeve 19 from the diversion trench 25, the conveying block 26 at the position can convey the lubricating oil to the conveying block 26 of the guide cavity 14 far away from the sliding sleeve 19 through the connecting strip 27, and when the subsequent swivel 5 rotates, the pressing block 28 can intermittently extrude the conveying block 26 far away from the sliding sleeve 19, so that the lubricating oil in the swivel 5 can be extruded to one side of the guide cavity 14 far away from the sliding sleeve 19, the inner side wall and the outer side wall of the annular groove 4 at the position of the swivel 5 are filled with the lubricating oil, and the uniformity of the subsequent swivel 5 and the annular sleeve 6 in lubrication is improved; when the sliding block 20 extrudes the extrusion strip 22 under the action of inertia, the middle part of the elastic part 21 arches upwards under the extrusion of the sliding block 20, meanwhile, the lubricating oil in the extrusion strip 22 can flow to the bottom of the elastic part 21 from the diversion hole 29, and the elastic part 21 can isolate the extruded lubricating oil from the extrusion strip 22, so that the lubricating oil can flow out conveniently; when the lubricating oil is extruded to the bottom of the elastic part 21, and the sliding block 20 is in the process of resetting, at the moment, the elastic part 21 is extended under the driving of the sliding block 20, and the sealing ball 30 is driven to be attached and extruded with the bottom surface of the sliding sleeve 19, so that the sealing ball 30 can be pressed into the flow guide hole 29 and seals the flow guide hole 29, the situation that the lubricating oil extruded from the bottom of the elastic part 21 is in contact with the extrusion strip 22 through the flow guide hole 29 and is reabsorbed by the extrusion strip 22 is reduced, meanwhile, the lubricating oil at the bottom of the closed elastic part 21 can be extruded into the collecting groove 24 when the elastic part is extended, and the outflow of the lubricating oil in the extrusion strip 22 is further promoted.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. An experimental facility for interference effect of building structure comprises an experimental table (1) positioned in a wind field; the method is characterized in that: the testing device is characterized in that a vibration model (2) is arranged in the middle of the top surface of the experiment table (1), vibration holes (3) which are communicated with each other are respectively formed in the middle of the bottom surface of the vibration model (2) and the corresponding experiment table (1), annular grooves (4) are respectively formed in the top surface and the bottom surface of the experiment table (1) at the positions of the vibration model (2), a rotating ring (5) and an annular sleeve (6) are respectively rotatably connected in the annular grooves (4) on the top surface and the bottom surface of the experiment table (1), magnetic plates (7) are respectively embedded in the bottom end of the rotating ring (5) and the top end of the annular sleeve (6), magnetic poles at one ends, close to each other, of the two groups of magnetic plates (7) are opposite, a linear motor (8) is arranged in the annular sleeve (6), a vibration rod (9) penetrating through the vibration holes (3) is connected to the end portion of the linear motor (8), a testing model (10) is arranged on the experiment table (1) on one side of the vibration model (2), and the vibration model (2) and the test model (10) are both provided with a vibration sensor and a wind pressure sensor.
2. The building structure interference effect experimental device according to claim 1, characterized in that: electric putter (11) are installed to the symmetry on laboratory bench (1) the bottom surface that annular cover (6) both sides correspond, electric putter (11) tip be connected with respectively with annular cover (6) outer wall shape assorted semiannular board (12), magnetic sheet (7) on swivel (5) and the annular cover (6) are annular equipartition respectively and set up.
3. The building structure interference effect experimental device according to claim 1, characterized in that: the middle parts of the end surfaces of the rotating ring (5) and the annular sleeve (6) which are close to each other are respectively and rotationally connected with a plurality of spherical balls (13).
4. The building structure interference effect experimental device according to claim 2, characterized in that: annular groove (4) top on laboratory bench (1) top surface is provided with annular direction chamber (14), the opening in direction chamber (14) is crescent from inside to outside, laboratory bench (1) is inside to be seted up a plurality of sets of two ring channel (4) tip of intercommunication and symmetric distribution's oil leakage groove (15), the lateral wall of oil leakage groove (15) flushes with the lateral wall of ring channel (4) mutually.
5. The building structure interference effect experimental device according to claim 4, characterized in that: the annular sleeve (6) is connected with an annular collecting sleeve (16) on the top surface of the side wall close to the experiment table (1), and a recovery tank (17) is arranged on the side wall of the annular sleeve (6) corresponding to the bottom end of the collecting sleeve (16).
6. The building structure interference effect experimental device according to claim 5, characterized in that: the rotary plate (18) is connected to the side wall inside the annular sleeve (6) in a rotating mode through a torsion spring, the semi-annular plate (12) and the bottom of the rotary plate (18) are made of magnetic materials respectively, the semi-annular plate (12) can repel the bottom end of the rotary plate (18) when being close to the bottom end of the rotary plate (18), the top end of the rotary plate (18) extends into the vibration hole (3) on the experiment table (1) and is fixedly connected with a sliding sleeve (19), one end, close to the vibration rod (9), of the sliding sleeve (19) is slidably connected with a sliding block (20), an elastic piece (21) is connected between the sliding block (20) and the end portion of the sliding sleeve (19), an extrusion strip (22) is arranged in a cavity between the sliding block (20) and the end portion of the sliding sleeve (19), the extrusion strip (22) and the bottom end of the annular sleeve (6) are connected through a conveying strip (23), and the extrusion strip (22) and the conveying strip (23) are made of water absorption materials respectively, the vibration hole (3) side wall that sliding sleeve (19) one side corresponds is seted up on the collecting vat (24) that are linked together with sliding sleeve (19) inside, guiding gutter (25) of intercommunication collecting vat (24) and direction chamber (14) are seted up to laboratory bench (1) inside.
7. The building structure interference effect experimental device according to claim 6, characterized in that: the top end of the conveying strip (23) is arranged on one side, close to the sliding block (20), of the bottom surface of the sliding sleeve (19), and the top end of the conveying strip (23) is flush with the inner wall of the bottom surface of the sliding sleeve (19).
8. The building structure interference effect experimental device according to claim 6, characterized in that: be equipped with respectively in direction chamber (14) of change (5) top both sides and carry piece (26), change (5) inside connecting strip (27) of connecting two transport pieces (26) that are equipped with, carry piece (26) and connecting strip (27) to make by water-absorbing material respectively, and keep away from and be provided with briquetting (28) of annular equipartition on direction chamber (14) lateral wall of sliding sleeve (19).
9. The building structure interference effect experimental device according to claim 6, characterized in that: the shape of elastic component (21) is arc slice, just the middle part of elastic component (21) is upwards protruding, extrusion strip (22) are arranged in sliding sleeve (19) cavity on the top of elastic component (21), a plurality of water conservancy diversion holes (29) have been seted up on the surface of elastic component (21).
10. The building structure interference effect experimental device according to claim 9, characterized in that: the opening of water conservancy diversion hole (29) is by the one end that is close to extrusion strip (22) to the one end that keeps away from extrusion strip (22) crescent, connect elastic shutoff ball (30) through the stay cord in water conservancy diversion hole (29), there is the clearance between shutoff ball (30) and water conservancy diversion hole (29).
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| CN202111278384.XA CN114001894A (en) | 2021-12-29 | 2021-12-29 | Building structure interference effect experimental device |
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| CN202111278384.XA CN114001894A (en) | 2021-12-29 | 2021-12-29 | Building structure interference effect experimental device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08178792A (en) * | 1994-12-20 | 1996-07-12 | Ohbayashi Corp | Rocking vibration tester |
| KR101460014B1 (en) * | 2013-05-15 | 2014-11-10 | 김미화 | System for vibration test bed |
| CN107655648A (en) * | 2017-09-30 | 2018-02-02 | 北京科技大学 | A kind of conventional suction type sensor guard closure assembly |
| CN108918005A (en) * | 2016-01-18 | 2018-11-30 | 北京师范大学 | A kind of device for measuring force for antidetonation vibration test |
| CN112284664A (en) * | 2020-10-20 | 2021-01-29 | 合肥思筹科技有限公司 | Simulation detection equipment and simulation detection method for seismic performance of building material |
| CN212460967U (en) * | 2020-07-13 | 2021-02-02 | 哈尔滨理工大学 | Experimental vibrator for engineering mechanics |
| CN112562483A (en) * | 2020-12-11 | 2021-03-26 | 重庆大学 | Building structure interference effect experimental device under influence of forced vibration |
| CN213364016U (en) * | 2020-09-16 | 2021-06-04 | 晋城市华泰矿山技术服务有限公司 | Vibration detector |
-
2021
- 2021-12-29 CN CN202111278384.XA patent/CN114001894A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08178792A (en) * | 1994-12-20 | 1996-07-12 | Ohbayashi Corp | Rocking vibration tester |
| KR101460014B1 (en) * | 2013-05-15 | 2014-11-10 | 김미화 | System for vibration test bed |
| CN108918005A (en) * | 2016-01-18 | 2018-11-30 | 北京师范大学 | A kind of device for measuring force for antidetonation vibration test |
| CN107655648A (en) * | 2017-09-30 | 2018-02-02 | 北京科技大学 | A kind of conventional suction type sensor guard closure assembly |
| CN212460967U (en) * | 2020-07-13 | 2021-02-02 | 哈尔滨理工大学 | Experimental vibrator for engineering mechanics |
| CN213364016U (en) * | 2020-09-16 | 2021-06-04 | 晋城市华泰矿山技术服务有限公司 | Vibration detector |
| CN112284664A (en) * | 2020-10-20 | 2021-01-29 | 合肥思筹科技有限公司 | Simulation detection equipment and simulation detection method for seismic performance of building material |
| CN112562483A (en) * | 2020-12-11 | 2021-03-26 | 重庆大学 | Building structure interference effect experimental device under influence of forced vibration |
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