CN114486139B - Vibration platform - Google Patents
Vibration platform Download PDFInfo
- Publication number
- CN114486139B CN114486139B CN202210067769.XA CN202210067769A CN114486139B CN 114486139 B CN114486139 B CN 114486139B CN 202210067769 A CN202210067769 A CN 202210067769A CN 114486139 B CN114486139 B CN 114486139B
- Authority
- CN
- China
- Prior art keywords
- base
- vibration
- block
- mounting
- guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- G01M7/06—Multidirectional test stands
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a vibration platform, which relates to the technical field of geotechnical engineering and comprises a fixed base, a vibration base and a mounting base, wherein equipment needing vibration is mounted on the mounting base, the mounting base is mounted on the vibration base, the mounting base can swing horizontally on the vibration base, the vibration base is mounted on the fixed base, and a driving structure for driving the vibration base to shake up and down is further mounted on the fixed base. The invention can realize the swing in the horizontal direction and the shake in the vertical direction at the same time, thereby simulating the vibration suffered by the earthquake on equipment on the vibration platform, and enabling the analysis of the soil movement characteristics and the movement state in the later period of the slope deformation process to be more accurate, so as to analyze the slope instability mechanism under the influence of the earthquake factors.
Description
Technical Field
The invention relates to the technical field of geotechnical engineering, in particular to a vibration platform.
Background
At present, the existence, development, engineering construction, leisure activities and the like of human beings are seriously influenced by geological disasters, and the diversity and the regional variability of the geological disasters are determined by the complex and diverse particularities of geological environments. Landslide is the most common type in geological disasters, and refers to the natural phenomenon that under the action of gravity, rock and soil on a slope are mainly influenced by factors such as river flushing, groundwater movement, rainwater soaking, earthquakes, manual slope cutting and the like, the stress state in a weak belt (or surface) at a certain position in the slope is changed, or the strength of the weak belt is reduced due to water or other physical and chemical actions, and the structure of the weak belt is damaged due to vibration or other actions, and the weak belt generates shearing damage under the condition that the stress is larger than the strength, so that the rock and soil above the weak belt is unstable and slides downwards and forwards along the whole or a plurality of blocks; meanwhile, landslide is also coupled and induced by various external factors, and a large number of geological disasters such as landslide, collapse, debris flow and the like occur every year, so that traffic interruption, river channel blockage, village and town burial, house destruction and farmland destruction are caused, and huge economic and personnel losses are formed.
At present, vibration platforms for simulating earthquake scenes can only realize horizontal swinging or vertical shaking, but cannot realize horizontal swinging and vertical shaking at the same time, so that the simulated earthquake scenes in the test process are completely different from actual earthquake scenes, and soil movement characteristics and movement states in the slope deformation process cannot be accurately analyzed in the later stage, and the final analysis result is completely different from the slope instability process in the actual engineering.
Disclosure of Invention
The invention aims to provide a vibration platform which can realize the swinging in the horizontal direction and the shaking in the vertical direction at the same time, so that the vibration of equipment on the vibration platform by an earthquake is simulated, the analysis of the movement characteristics and the movement state of soil in the later period of slope deformation is more accurate, and the slope instability mechanism under the influence of earthquake factors is analyzed.
In order to achieve the aim of the invention, the technical scheme adopted is as follows: the utility model provides a vibrations platform, includes unable adjustment base, vibrations base and installation base, installs the equipment that needs vibrations on the installation base, and the installation base is installed on vibrations base, but the installation base horizontal direction swing on vibrations base, and vibrations base installs on unable adjustment base, still installs the drive structure that drive vibrations base shakes from top to bottom on the unable adjustment base.
Further, the fixed base is provided with a plurality of supporting feet, the vibration base is provided with a plurality of steel pipes, and the supporting feet are inserted in the steel pipes in a one-to-one sliding mode.
Further, the driving structure comprises a rotating shaft rotatably supported on the fixed base and an engine fixedly mounted on the fixed base, a cam and a differential mechanism are mounted on the rotating shaft, the lower surface of the vibration base is supported on the cam, and a driving gear meshed with the input end of the differential mechanism is further mounted at the output end of the engine.
Further, a driving gear is further arranged on the rotating shaft, a through groove is further formed in the vibration base, a shifting block penetrating through the through groove is further arranged on the mounting base, and the shifting block is meshed with the driving gear; and a reset mechanism for driving the installation base to reset is also arranged on the vibration base.
Further, the reset mechanism comprises guide blocks which are respectively arranged on the front side and the rear side of the installation base, a certain gap is reserved between the inner side surface of at least one guide block and the side wall of the installation base, and a reset spring is arranged between the guide block and the installation base.
Further, the guide block is I-shaped, and a notch corresponding to the guide block is formed on one side of the vibration base.
Further, the reset mechanism further comprises guide rods which are respectively arranged on the front side and the rear side of the vibration base, the two guide blocks are respectively sleeved on the two guide rods in a sliding mode, the reset spring is located between the guide blocks and the installation base, and limiting nuts are arranged at the extending ends of the guide rods.
Further, the vibration platform further comprises a laser tachometer for measuring the rotating speed of the rotating shaft.
Furthermore, two limiting blocks capable of moving relatively are further arranged on the vibration device, and the two limiting blocks are located on two opposite sides of the box body for installing the side slope model.
Further, the limiting block is angle steel, the vibration device is provided with a T-shaped chute, an inserting block which is in sliding fit with the T-shaped chute is arranged below the limiting block, and the limiting block is also provided with a locking screw which is used for locking the limiting block.
The invention has the advantages that,
1. according to the invention, the mounting base reciprocates on the vibration base, and the driving structure drives the vibration base to shake up and down, so that equipment mounted on the mounting base can be subjected to horizontal reciprocating motion and vertical shaking at the same time, vibration of the equipment on the vibration platform caused by earthquake is simulated, analysis of soil movement characteristics and movement states in the slope deformation process in the later stage is more accurate, and a slope instability mechanism under the influence of earthquake factors is analyzed.
2. In the actual use process, the invention can also simulate earthquake waves with different earthquake magnitudes by changing the vibration strength through adjusting the frequency of the engine, thereby analyzing the landslide law under different earthquake magnitudes.
Drawings
FIG. 1 is a block diagram of a shake table provided by the present invention;
FIG. 2 is a mounting block diagram of a drive structure;
FIG. 3 is a bottom view of the vibration mount;
fig. 4 is a structural view of the stopper.
The reference numerals and corresponding part names in the drawings:
1. the device comprises a fixed base, 2, a vibration base, 3, a steel pipe, 4, supporting legs, 5, a rotating shaft, 6, an engine, 7, a driving gear, 8, a differential mechanism, 9, a cam, 10, a driving gear, 11, a mounting base, 12, a through groove, 13, a shifting block, 14, a guide block, 15, a guide rod, 16, a limit nut, 17, a reset spring, 18, a notch, 19, a limit block, 20, a T-shaped chute, 21, a plug block, 22 and a locking screw.
Detailed Description
The invention will now be described in further detail by way of specific examples of embodiments in connection with the accompanying drawings.
As shown in fig. 1 to 4, the vibration platform provided by the invention comprises a fixed base 1, a vibration base 2 and a mounting base 11, wherein equipment needing vibration is arranged on the mounting base 11, the equipment needing vibration can be a box body or other structures for mounting a slope model, the fixed base 1, the vibration base 2 and the mounting base 11 are sequentially arranged from bottom to top, the vibration base 2 is arranged above the fixed base 1, and the mounting base 11 is arranged above the vibration base 2. The installation base 11 can swing in the horizontal direction on the vibration base 2, the vibration base 2 can shake up and down on the fixed base 1, and the fixed base 1 is also provided with a driving structure which is mainly used for driving the vibration base 2 to shake up and down.
According to the invention, the fixed base 1 is driven to shake up and down through the driving structure, and the installation base 11 is arranged on the fixed base 1, so that the fixed base 1 shakes up and down and synchronously shakes the installation base 11 up and down at the same time, thereby synchronously shaking the equipment finally arranged on the installation base 11; at the same time, the installation base 11 swings horizontally on the vibration base 2, so that the equipment installed on the installation base 11 swings synchronously. Through the up-and-down shake of the vibration base 2 and the horizontal swing of the installation base 11, the equipment installed on the installation base 11 can shake in the horizontal direction and the vertical direction at the same time, so that the vibration of the installation base 11 is identical to the vibration of the earthquake, the vibration of the earthquake is simulated, and the vibration received by the equipment installed on the installation base 11 is identical to the vibration of the earthquake.
When the invention is used in the slope instability test, the box body for installing the slope model can be directly installed on the installation base 11, so that the installation base 11 can synchronously horizontally reciprocate and shake up and down while horizontally reciprocate and shake up and down, the slope model can be completely identical to the vibration in the earthquake by vibration, and the analysis of the soil movement characteristics and the movement state in the later period of slope deformation is more accurate, thereby the analysis result is completely identical to the slope instability process in practical engineering.
In some embodiments, the fixing base 1 has a plurality of supporting feet 4, at least two supporting feet 4, the plurality of supporting feet 4 may be symmetrically arranged along the fixing base 1, and the plurality of supporting feet 4 may also be uniformly arranged on the fixing base 1; meanwhile, the vibration base 2 is further provided with a plurality of steel pipes 3, the positions of the plurality of steel pipes 3 are in one-to-one correspondence with the positions of the plurality of supporting feet 4, the plurality of supporting feet 4 are inserted into the plurality of steel pipes 3 one by one, and the supporting feet 4 can slide up and down in the steel pipes 3 under the condition of external force, so that the shape of the supporting feet 4 is the same as the inner diameter shape of the steel pipes 3, and the inner walls of the steel pipes 3 are in clearance fit with the outer walls of the supporting feet 4. Through supporting legs 4 and steel pipe 3 cooperation, can carry out up-and-down motion after making vibrations base 2 receive driving structure's drive when satisfying vibrations base 2 support, make vibrations base 2's structure more firm when guaranteeing vibrations base 2 shake from top to bottom.
In some embodiments, the driving structure includes a rotating shaft 5 rotatably supported on the fixed base 1 through two bearing seats and an engine 6 fixedly mounted on the fixed base 1, where the engine 6 may use a variable frequency motor, a cam 9 and a differential 8 may be mounted on the rotating shaft 5, the differential 8 may be located in the middle of the rotating shaft 5, and a driving gear 7 is mounted on an output shaft of the engine 6, and the driving gear 7 is meshed with the differential 8, so that the rotating shaft 5 is driven to rotate when the engine 6 rotates; meanwhile, the number of the cams 9 on the rotating shaft 5 can be one or more, the maximum radius of the cams 9 is larger than the interval between the rotating shaft 5 and the vibration base 2, and the minimum radius of the cams 9 is smaller than the interval between the rotating shaft 5 and the vibration base 2. When the cam 9 rotates to the highest point, the cam 9 jacks up the vibration base 2, and at the moment, the vibration base 2 is positioned at the highest position, and the vibration base 2 is supported on the cam 9; when the cam 9 rotates to the lowest point, the cam 9 loses the support to the vibration base 2, the vibration base 2 automatically moves downwards through the gravity of the cam 9, the vibration base 2 is located at the lowest position, and the cam 9 is driven to continuously rotate through the rotating shaft 5, so that the vibration base 2 moves up and down in a reciprocating mode, a box body for mounting a slope model is subjected to longitudinal vibration, and accordingly longitudinal waves in earthquake are simulated.
In some embodiments, a driving gear 10 is further installed on the rotating shaft 5, and when the rotating shaft 5 rotates, the driving gear 10 rotates synchronously with the rotating shaft 5; meanwhile, the vibration base 2 is also provided with a through groove 12, the through groove 12 is in a long waist shape or a rectangular shape, the length direction of the through groove 12 is horizontally perpendicular to the axial direction of the rotating shaft 5, the mounting base 11 is also provided with a shifting block 13, the shifting block 13 penetrates through the through groove 12 to extend towards the driving gear 10, the extending end of the shifting block 13 is in a tooth shape, and the extending end of the shifting block 13 is meshed with the driving gear 10. Here, when the driving gear 10 is engaged with the dial 13, the vibration base 2 is at the lowest position, that is, the cam 9 does not lift up the vibration base 2 at this time. The vibration base 2 is also provided with a reset mechanism which is mainly used for resetting the shifted installation base 11.
When the driving gear 10 on the rotating shaft 5 rotates, the driving gear 10 dials the shifting block 13, the shifting block 13 drives the installation base 11 to synchronously move when being toggled, so that the installation base 11 generates displacement in the horizontal direction, after the installation base 11 moves, the reset mechanism drives the installation base 11 to reset, and after the installation base 11 resets, when the driving gear 10 is meshed with the shifting block 13 again, the driving gear 10 drives the installation base 11 to move again, and therefore the installation base 11 realizes reciprocating motion. The reciprocating motion of the installation base 11 in the horizontal direction and the reciprocating motion of the installation base in the vertical direction enable the box body for installing the slope model to reciprocate in the horizontal direction and reciprocate in the vertical direction, so that the scene of the slope model 2 under an earthquake is simulated together, and the motion condition of the slope in the earthquake process is obtained by analyzing the motion condition of the slope model 2.
In some embodiments, the reset mechanism includes guide blocks 14 respectively mounted on the front and rear sides of the mounting base 11, and a certain distance is provided between the inner wall of at least one guide block 14 and the side wall of the vibration base 2, so that the mounting base 11 can generate relative displacement on the vibration base 2, and the two guide blocks 14 are matched together, so that the two guide blocks 14 respectively limit the two sides of the mounting base 11 under the condition that the mounting base 11 can reciprocate, and the mounting base 11 is prevented from excessively displacing in the reciprocating motion process. When a certain interval is arranged between the inner side wall of the guide block 14 and the side wall of the vibration base 2, a return spring 17 is arranged in the interval, one end of the return spring 17 is tightly abutted and fixed with the vibration base 2, and the other end of the return spring 17 is tightly abutted and fixed with the guide block 14. When the driving gear 10 drives the shifting block 13 to enable the installation base 11 to generate displacement on the vibration base 2 in the rotation process of the rotating shaft 5, the reset spring 17 is stretched or compressed, and after the installation base 11 generates displacement, the driving gear 10 cannot continuously drive the shifting block 13, so that the shifting block 13 loses the acting force of the driving gear 10, at the moment, the reset spring 17 pushes the installation base 11 during shrinkage or automatic reset through the elastic force of the reset spring 17, and the installation base 11 is automatically reset.
In some embodiments, the guide blocks 14 located on the front and rear sides of the mounting base 11 are all "-", at this time, the front side of the vibration base 2 or the rear side of the vibration base 2 or both the front and rear sides of the vibration base 2 are provided with notches 18, the guide blocks 14 are slidably matched with the notches 18, a certain gap is formed between the inner side surface of the guide block 14 and the bottom of the notch 18, and the return spring 17 is located between the bottom of the notch 18 and the guide block 14. By the cooperation of the guide block 14 and the notch 18, when the mounting base 11 needs to reciprocate on the vibration base 2, the guide block 14 slides in the notch 18, and when the bottom of the notch 18 is in the motion of the guide block 14, the mounting base 11 cannot advance continuously, so that the displacement of the mounting base 11 is limited. Here, the specific structure of the two guide blocks 14 may be that one guide block 14 is in an "-" shape, the other guide block 14 is in a "7" shape, or both guide blocks 14 are in a "7" shape. When one guide block 14 is I-shaped and the other guide block 14 is 7-shaped, a return spring 17 is arranged between the inner wall of the 7-shaped guide block 14 and the vibration base 2; when the two guide blocks 14 are 7, a return spring 17 can be arranged between the inner wall of one guide block 14 and the vibration base 2, and the return spring 17 can also be arranged between the inner wall of the two guide blocks 14 and the vibration base 2.
Because the driving gear 10 and the cam 9 synchronously rotate when the rotating shaft 5 rotates, the driving gear 10 toggles the shifting block 13 to enable the mounting base 11 to displace in the horizontal direction when rotating, the cam 9 jacks up the vibrating base 2 when rotating, and the mounting base 11 and the box body for mounting the slope model synchronously move upwards when the vibrating base 2 jacks up, when the driving gear 10 toggles the shifting block 13, the shifting block 13 not only moves away from the driving gear 10 in the horizontal direction, but also moves away from the driving gear 10 along with the vibrating base 2 and the mounting base 11 synchronously, at the moment, the reset spring 17 seat does not collide with the driving gear 10 when pushing the mounting base 11 to reset, and when the vibrating base 2 and the mounting base 11 move downwards, the shifting block 13 is meshed with the driving gear 10 again.
In some embodiments, the reset mechanism further includes guide rods 15 respectively mounted on the front and rear sides of the vibration base 2, the axial direction of the guide rods 15 is the same as the displacement direction of the mounting base 11, the reset spring 17 is sleeved on the guide rods 15, the guide blocks 14 are provided with through holes in sliding fit with the guide rods 15, one ends of the reset spring 17 are abutted against the side surfaces of the vibration base 2, the other ends of the reset spring 17 are abutted against the guide blocks 14, and the extending ends of the guide rods 15 are further provided with limit nuts 16 for limiting the guide blocks 14 to be separated from the guide rods 15. Here, when the guide blocks 14 on the front and rear sides of the mounting base 11 are all "-", the guide rod 15 is located in the notch 18; meanwhile, the guide rods 15 on the front side and the rear side of the vibration base 2 can be multiple, when the guide rods 15 on the same side of the vibration base 2 are multiple, the guide rods 15 are arranged at intervals, at the moment, the return springs 17 are also multiple, the return springs 17 are respectively sleeved on the guide rods 15 one by one, and the through holes on the guide blocks 14 are also multiple. Through the sliding fit of the guide block 14 and the guide rod 15, when the installation base 11 moves horizontally, the installation base 11 can only reciprocate back and forth and can not move left and right through the fit of the guide rod 15 and the guide block 14, so that the installation base 11 is prevented from swinging randomly on the vibration base 2, and the stability between the installation base 11 and the vibration base 2 is ensured.
In some embodiments, two limiting blocks 19 are further mounted on the mounting base 11 of the vibration device 9, and when the box body for mounting the slope model is mounted on the mounting base 11, the two limiting blocks 19 are respectively located on two opposite sides of the box body for mounting the slope model, that is, the two limiting blocks 19 may be located on two opposite sides of the box body for mounting the slope model or may be located at two opposite corners of the box body for mounting the slope model; meanwhile, the distance between the two limiting blocks 19 is adjustable, namely the two limiting blocks 19 can be relatively close to or relatively far away from each other, when the two limiting blocks 19 are close to each other, the box body for installing the slope model is clamped between the two limiting blocks 19, the box body for installing the slope model is fixed, when the two limiting blocks 19 are far away from each other, the limiting blocks 19 and the box body for installing the slope model lose clamping, and at the moment, the box body for installing the slope model can be taken down from the installation base 11. Through the cooperation of two stopper 19, not only make the installation that is used for installing the box of side slope model more convenient, and make the box that is used for installing the side slope model of mountable different sizes on the installation base 11.
In some embodiments, the limiting block 19 is an angle steel, the angle steel is used for coating the right angle of the box body for installing the slope model, and the two angle steels are used for coating the two opposite angles of the box body for installing the slope model; the mounting base 11 of the vibration device 9 is also provided with a T-shaped chute 20, the T-shaped chute 20 is a through slot 12, the opening width of the T-shaped chute 20 is smaller than the slot bottom width of the T-shaped chute 20, and the axis direction of the T-shaped chute is consistent with the diagonal direction of a box body for mounting a slope model; the lower extreme of stopper 19 still has plug block 21, and plug block 21 is located the corner below of stopper 19, plug block 21 and T type spout 20 sliding fit, and still has the screw hole on the stopper 19, and the upper end of screw hole runs through stopper 19 up end, and the lower extreme of screw hole runs through plug block 21 lower extreme, and locking screw 22 is still installed to this screw hole. By tightening the locking screw 22, the lower end of the locking screw 22 is abutted against the bottom of the T-shaped chute 20, so that the plug-in block 21 is locked and fixed in the T-shaped chute 20; when the position of the limiting block 19 needs to be adjusted, the locking screw 22 is loosened, so that the lower end of the locking screw 22 loses the abutting with the bottom of the T-shaped chute 20, the plugging block 21 loses the locking, and the plugging block 21 can normally slide in the T-shaped chute 20.
In this embodiment, the limiting blocks 19 may also directly adopt a vertical plate structure, at this time, the limiting blocks 19 may adopt four limiting blocks, so that the four limiting blocks 19 are respectively located at the outer sides of four sides of the box body for installing the slope model, at this time, the T-shaped sliding grooves 20 need to be set to two, one T-shaped sliding groove 20 extends along the length direction of the installation base 11, the other T-shaped sliding groove 20 extends along the width direction of the installation base 11, so that the two T-shaped sliding grooves 20 are in a cross staggered arrangement, the inserting blocks 21 at the lower ends of the two limiting blocks 19 are respectively inserted at two ends of one T-shaped sliding groove 20, the inserting blocks 21 at the lower ends of the other two limiting blocks 19 are respectively inserted at two ends of the other T-shaped sliding groove 20, and through the joint cooperation of the four limiting blocks 19, the four limiting blocks 19 respectively block the four sides of the box body for installing the slope model, so that after the box body for installing the slope model is installed on the installation base 11, the box body for installing the slope model cannot move on the installation base 11, and the box body for installing the slope model is fixedly installed.
In some embodiments, the vibration platform further comprises a laser tachometer (not shown in the figure) for measuring the rotation speed of the rotating shaft 5, specifically, the laser tachometer can be directly installed on the fixed base 1 or on the bearing seat, and reflective paper corresponding to the laser tachometer is also installed on the rotating shaft 5, and the reflective paper cooperates with the laser tachometer to detect the rotation speed of the rotating shaft 5, so as to obtain the rotation speed of the driving gear 10, thereby obtaining the vibration frequency, and facilitating the subsequent recording and calculating of data. Here, the laser tachometer can also be installed outside the vibrator, and the specific installation position of the laser tachometer can be adjusted according to actual use conditions.
When a slope instability test is required, a box body provided with a slope model can be placed on the installation base 11, at the moment, a locking screw 22 on the limiting block 19 is loosened, the limiting block 19 slides along the T-shaped sliding groove 20 through the matching of the T-shaped sliding groove 20 and the plug-in block 21 and gradually approaches the box body for installing the slope model, when the limiting block 19 abuts against the outer wall of the box body for installing the slope model, the locking screw 22 is screwed down, the lower end of the screw abuts against the bottom of the T-shaped sliding groove 20, and the limiting block 19 is locked and fixed with the installation base 11; the plurality of stoppers 19 are used to jointly press the outer wall of the case for mounting the slope model, so that the case for mounting the slope model is fixed on the mounting base 11.
When a seismic scene needs to be simulated, the engine 6 is started, the engine 6 drives the driving gear 7 to rotate, the differential mechanism 8 is enabled to rotate through the engagement of the driving gear 7 and the input end of the differential mechanism 8, the rotating shaft 5 is driven to rotate when the differential mechanism 8 rotates, the cam 9 and the driving gear 10 on the rotating shaft 5 synchronously rotate, the cam 9 gradually jacks up the vibration base 2 when the protruding portion of the cam 9 is gradually close to the vibration base 2 while rotating, the vibration base 2 is enabled to move upwards, the installation base 11 and the box body for installing a slope model are all jacked up, the protruding portion of the cam 9 is gradually far away from the vibration base 2 along with the continuous rotation of the cam 9, and the vibration base 2, the installation base 11 and the box body for installing the slope model automatically move downwards through the gravity of the cam 9, so that the vibration base 2, the installation base 11 and the box body for installing the slope model realize up-down vibration.
While the driving gear 10 rotates, the driving gear 10 stirs the shifting block 13 along the through groove 12 along with the rotation of the driving gear 10, so that the shifting block 13 moves while driving the installation base 11 to advance on the vibration base 2, the guide block 14 slides along the guide rod 15 when the installation base 11 advances, the return spring 17 is compressed, when the shifting block 13 drives the installation base 11 to advance, the shifting block 13 loses engagement with the driving gear 10, so that the shifting block 13 and the driving gear 10 have a certain distance in the horizontal direction, and the cam 9 jacks up the vibration base 2, so that the shifting block 13 and the driving gear 10 have a certain distance in the vertical direction, so that the shifting block 13 loses the acting force of the driving gear 10, and at the moment, the return spring 17 pushes the installation base 11 to reset through the elasticity of the return spring, so that the installation base 11 reciprocates on the vibration base 2, and the box body for installing the slope model synchronously reciprocates along with the installation base 11, so that the box body for installing the slope model reciprocates horizontally.
The side slope model 2 is matched with the horizontal reciprocating motion and the up-down vibration, so that the side slope model 2 is simulated to receive the earthquake transverse wave and the earthquake longitudinal wave.
In the present invention, when the vibrator 9 is in a simulated seismic environment, the exciting force of the vibrator 9 is calculated as follows:
F＝(m 0 +m 1 +m 2 +……)A。
wherein: f-exciting force (N); m is m 0 -the vibrating means 9 move part of the effective mass (kg); m is m 1 Vibration mount 902 and mounting mount 911 table top mass (kg); m is m 2 -mass (kg) of test pieces (e.g. clamps, mounting screws, etc.); m is m 0 +m 1 +m 2 + … … is the total weight of all objects on the present invention (including equipment that is later mounted on the mounting base 911, etc.); a-test acceleration (m/s) 2 )。
Wherein a=ωv; wherein v-test speed; ω is angular velocity.
Wherein ω=2pi f; wherein pi-circumference ratio; f is the test frequency.
Wherein n is 2 ＝Z 1 /Z 2 *n 1 The method comprises the steps of carrying out a first treatment on the surface of the Wherein n is 2 -differential 8 pinion (driving transverse vibrations) rotation speed; n is n 1 -the rotational speed of the main gear of the differential 8 (the gear carried by the engine); z is Z 1 -differential 8 main gear number; z is Z 2 Differential 8 pinion number.
Meanwhile, the calculation formula of the stress cycle times of the driving gear 10 in the invention is as follows:
N1＝60nJLH
wherein: n-rotation speed; j-the number of times of engagement of the drive gear 10 with the dial 13 for one revolution; lh—operating time.
The invention can be used for installing the box body of the slope model in the slope instability test, and can also be used as a common vibration platform, and other vibration-required equipment such as a screening box body for installing a vibration sieve on the installation base can be installed.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The vibration platform is characterized by comprising a fixed base (1), a vibration base (2) and a mounting base (11), wherein equipment needing vibration is mounted on the mounting base (11), the mounting base (11) is mounted on the vibration base (2), the mounting base (11) can swing in the horizontal direction on the vibration base (2), the vibration base (2) is mounted on the fixed base (1), and a driving structure for driving the vibration base (2) to shake up and down is further mounted on the fixed base (1);
the driving structure comprises a rotating shaft (5) rotatably supported on the fixed base (1) and an engine (6) fixedly mounted on the fixed base (1), a cam (9) and a differential mechanism (8) are mounted on the rotating shaft (5), the lower surface of the vibration base (2) is supported on the cam (9), and a driving gear (7) meshed with the input end of the differential mechanism (8) is further mounted at the output end of the engine (6); a driving gear (10) is further arranged on the rotating shaft (5), a through groove (12) is further formed in the vibration base (2), a shifting block (13) penetrating through the groove (12) is further arranged on the mounting base (11), and the shifting block (13) is meshed with the driving gear (10); a reset mechanism for driving the installation base (11) to reset is also arranged on the vibration base (2); the resetting mechanism comprises guide blocks (14) which are respectively arranged on the front side and the rear side of the installation base (11), a certain gap is reserved between the inner side surface of at least one guide block (14) and the side wall of the installation base (11), and a resetting spring (17) is arranged between the guide block (14) and the installation base (11), wherein the guide block (14) is in a I shape, and a notch (18) corresponding to the guide block (14) is formed in one side of the vibration base (2); the reset mechanism further comprises guide rods (15) which are respectively arranged on the front side and the rear side of the vibration base (2), the two guide blocks (14) are respectively sleeved on the two guide rods (15) in a sliding mode, the reset spring (17) is located between the guide blocks (14) and the installation base (11), and limiting nuts (16) are arranged at the extending ends of the guide rods (15).
2. The vibration platform according to claim 1, wherein the fixed base (1) is provided with a plurality of supporting feet (4), the vibration base (2) is provided with a plurality of steel pipes (3), and the plurality of supporting feet (4) are inserted in the steel pipes (3) in a one-to-one sliding manner.
3. Vibration table according to claim 1, further comprising a laser tachometer for measuring the rotational speed of the spindle (5).
4. The shake table according to claim 1, wherein two relatively movable stoppers (19) are further mounted on the mounting base (11), and the two stoppers (19) are located on opposite sides of the box for mounting the side slope model.
5. The shake table according to claim 4, wherein the limiting block (19) is angle steel, the mounting base (11) is provided with a T-shaped chute (20), the lower part of the limiting block (19) is provided with an inserting block (21) which is in sliding fit with the T-shaped chute (20), and the limiting block (19) is further provided with a locking screw (22) which is used for locking the limiting block (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210067769.XA CN114486139B (en) | 2022-01-20 | 2022-01-20 | Vibration platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210067769.XA CN114486139B (en) | 2022-01-20 | 2022-01-20 | Vibration platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114486139A CN114486139A (en) | 2022-05-13 |
| CN114486139B true CN114486139B (en) | 2023-07-07 |
Family
ID=81472975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210067769.XA Active CN114486139B (en) | 2022-01-20 | 2022-01-20 | Vibration platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114486139B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114578021B (en) * | 2022-01-20 | 2023-07-07 | 西华大学 | Wireless measurement system and test method for measuring slope instability |
| CN115430599A (en) * | 2022-08-30 | 2022-12-06 | 博众精工科技股份有限公司 | Mechanical vibration device |
| CN115371929B (en) * | 2022-10-24 | 2023-01-03 | 常州中英科技股份有限公司 | Multilayer circuit board vibration stability detection device and detection method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101590955B1 (en) * | 2014-08-27 | 2016-02-18 | 삼익티에이치케이 주식회사 | Experience earthquake device |
| CN109060287A (en) * | 2016-01-20 | 2018-12-21 | 北京师范大学 | It is a kind of for simulating the six degree of freedom earthquake simulation vibration device of earthquake vibration |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4069706A (en) * | 1976-11-18 | 1978-01-24 | Mrad Corporation | Complex vibration tester |
| JP2000074135A (en) * | 1998-08-28 | 2000-03-07 | Daiwa House Ind Co Ltd | Vibration control structure and vibration control device |
| JP3413482B2 (en) * | 1999-10-07 | 2003-06-03 | 株式会社サンエス | 3-axis vibration test equipment |
| CN2852091Y (en) * | 2005-12-16 | 2006-12-27 | 陈景长 | Improved structure of large-scale vibration test bench |
| US9482593B2 (en) * | 2014-09-17 | 2016-11-01 | King Fahd University Of Petroleum And Minerals | Selectable multi-axis shaker table |
| CN104614231B (en) * | 2015-02-12 | 2017-09-15 | 南京工业大学 | A kind of laminar shear model clay case that can be loaded |
| CN108205958A (en) * | 2018-03-21 | 2018-06-26 | 吉林大学 | A kind of earthquake simulation experience platform |
| KR102012694B1 (en) * | 2019-01-07 | 2019-08-21 | 코리아넷 주식회사 | Education Training and Simulation Apparatus for Experiencing Earthquake |
| CN109827730B (en) * | 2019-03-25 | 2020-07-31 | 郑州航空工业管理学院 | Reticulated shell structure model experimental device |
| CN210777472U (en) * | 2019-06-13 | 2020-06-16 | 张丽 | Earthquake simulation motion platform for earthquake knowledge explanation |
| CN210777477U (en) * | 2019-07-25 | 2020-06-16 | 深圳防灾减灾技术研究院 | Earthquake simulator |
| CN111323193B (en) * | 2020-04-21 | 2021-11-02 | 河南理工大学 | Civil engineering structure anti-seismic test device |
| CN212161116U (en) * | 2020-06-28 | 2020-12-15 | 魏颖 | Building structure model subtracts shock insulation technique demonstration ware |
| CN212701665U (en) * | 2020-06-29 | 2021-03-16 | 范玉梅 | Clinical laboratory shakes device with blood thoughtlessly |
| CN113533696B (en) * | 2021-08-03 | 2023-08-18 | 辽宁工程技术大学 | Model test device for simulating rock-soil slope instability and damage |
| CN113607926A (en) * | 2021-09-30 | 2021-11-05 | 四川省公路规划勘察设计研究院有限公司 | Accumulation body test device for simulating rainfall influence and vibration effect |
| CN217605234U (en) * | 2022-01-20 | 2022-10-18 | 西华大学 | Vibration platform |
-
2022
- 2022-01-20 CN CN202210067769.XA patent/CN114486139B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101590955B1 (en) * | 2014-08-27 | 2016-02-18 | 삼익티에이치케이 주식회사 | Experience earthquake device |
| CN109060287A (en) * | 2016-01-20 | 2018-12-21 | 北京师范大学 | It is a kind of for simulating the six degree of freedom earthquake simulation vibration device of earthquake vibration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114486139A (en) | 2022-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114486139B (en) | Vibration platform | |
| Ueng et al. | A large biaxial shear box for shaking table test on saturated sand | |
| CN206362648U (en) | Pipeline shock resistance test machine | |
| CN209623989U (en) | A kind of adjustable civil engineering structure shock test device of direction of vibration | |
| CN116399724B (en) | Test system and method for simulating fault sliding and torsion effect coupling | |
| Formisano et al. | Experimental ambient vibration tests and numerical investigation on the Sidoni Palace in Castelnuovo of San Pio (L'Aquila, Italy) | |
| CN217605234U (en) | Vibration platform | |
| CN216562253U (en) | Earthquake demonstration device for building earthquake-resistant teaching | |
| Hinzen | Simulation of toppling columns in archaeoseismology | |
| CN101957285A (en) | Scratch simulation tester and using method thereof | |
| Lamberti et al. | Prototype measurements of the dynamic response of caisson breakwaters | |
| CN116429609A (en) | Material hardness detection system and detection process for building construction | |
| CN116189524B (en) | Earthquake-resistant simulation platform and simulation method for building design | |
| CN115420449A (en) | Civil engineering structure anti-seismic test device and method | |
| CN114578021B (en) | Wireless measurement system and test method for measuring slope instability | |
| CN113419045A (en) | Test device and simulation method for simulating landslide debris movement | |
| CN110685304A (en) | Model test device and method for pressure reduction performance of flexible cushion layer behind retaining wall | |
| Sextos et al. | Probabilistic seismic hazard assessment through geometrically non-linear back-analysis of byzantine and roman monuments | |
| CN213274765U (en) | Civil engineering structure anti-seismic test device | |
| CN108230859B (en) | Rainfall simulation device for landslide model test | |
| CN116838897B (en) | Displacement laser measuring device for civil engineering | |
| CN219196077U (en) | Foundation pit support structure simulation device and foundation pit excavation supporting test system | |
| CN219956845U (en) | Device for earthquake simulation test | |
| CN219121749U (en) | Portable geological exploration check out test set | |
| CN112903963A (en) | Device for detecting liquefaction resistance of sandy soil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |