CN115273644A - Science popularization device for displaying bridge damping structure and effect - Google Patents
Science popularization device for displaying bridge damping structure and effect Download PDFInfo
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- CN115273644A CN115273644A CN202211087075.9A CN202211087075A CN115273644A CN 115273644 A CN115273644 A CN 115273644A CN 202211087075 A CN202211087075 A CN 202211087075A CN 115273644 A CN115273644 A CN 115273644A
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- 230000001747 exhibiting effect Effects 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 description 7
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/04—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of buildings
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The invention discloses a science popularization device for displaying a bridge damping structure and effect, which comprises a substrate, an excitation device and a bridge, wherein the excitation device is positioned below the substrate and connected with the substrate, and is used for simulating seismic vibration and transmitting the vibration to the substrate; the bridge sets up just divide into antidetonation bridge and contrast bridge above the base plate, the antidetonation bridge is including setting up first pier on the base plate is in with support first bridge floor on the first pier, contrast bridge is including setting up second pier on the base plate is in with support second bridge floor on the second pier, first pier with the difference of second pier lies in first pier has the bumper shock absorber. The invention can visually display the damping principle and the damping effect of the damper and deepen the impression of audiences.
Description
Technical Field
The invention relates to the technical field of bridge damping principle simulation and science popularization exhibits, in particular to a science popularization device for displaying a bridge damping structure and effect.
Background
The marine bridge is the marine bridge which has the highest shockproof and wind-resistant level and only spans earthquake active faults in China at present, the construction difficulty of the marine bridge is high, the same lines all over the world pay attention, and a damping system is an essential part of the marine bridge to realize the wind-resistant and earthquake-resistant performance required by the marine bridge. Because the earthquake ripples divide into longitudinal wave and shear wave, and the destructive power of shear wave is stronger, therefore the marine bridge has adopted the mode that floating structure and viscous shock absorber combined together to carry out the shock attenuation in vertical direction, has then adopted E shaped steel bumper shock absorber to carry out the shock attenuation in the horizontal direction.
At present, no science popularization exhibit for displaying a bridge damping structure exists in the design field of the science popularization exhibits and the technical field of teaching aids. The existing damper or damper display device usually focuses on the display of the mechanism of the fixing device, the display of the specific damping effect is less, and the damper or damper display device is also embodied in some abstract systems, so that the damping mechanism is inconvenient for audiences to know more intuitively in the building.
The difficulty of designing the exhibit which can be more easily understood by audiences and can better popularize earthquake-proof knowledge in science is that a certain action mechanism is required to be displayed, the effect is emphasized, the impression of the audiences is deepened, and the purposes of scientificity, interestingness and interactivity of the exhibit are achieved.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a science popularization device for displaying a shock absorbing structure and effect of a bridge, which can intuitively display a shock absorbing principle and a shock absorbing effect of a shock absorber and can deepen an impression of a viewer.
According to the science popularization device of the bridge shock absorption structure and effect of the embodiment of the invention, the science popularization device comprises:
a substrate;
the vibration excitation device is positioned below the substrate and connected with the substrate, and is used for simulating seismic vibration and transmitting the vibration to the substrate;
the bridge, the bridge sets up just divide into antidetonation bridge and contrast bridge above the base plate, the antidetonation bridge is including setting up first pier on the base plate is in with support first bridge floor on the first pier, contrast bridge is including setting up second pier on the base plate is in with support the second bridge floor on the second pier, first pier with the difference of second pier lies in first pier has the bumper shock absorber.
According to the science popularization device for displaying the bridge damping structure and the bridge damping effect, the vibration excitation device is used for generating vibration excitation with certain frequency and amplitude to simulate seismic vibration, so that the substrate vibrates. By comparing and observing the shock absorber of the first pier and the second pier of the anti-seismic bridge, audiences can intuitively and easily understand the structure and the shock absorption principle of the shock absorber; through the marker of the vibration effect of contrast observation first bridge floor and second bridge floor, on the first bridge floor and the marker of the vibration effect on the second bridge floor, can make spectator can see the shock attenuation effect of bumper shock absorber directly perceivedly. The science popularization device for displaying the shock absorption structure and the shock absorption effect of the bridge provided by the embodiment of the invention has the advantages that the impression of audiences is profound by visually displaying the shock absorption principle and the shock absorption effect of the shock absorber, the purposes of scientificity and interestingness of exhibits are achieved, the serious damage of earthquake disasters to buildings such as the bridge is effectively shown, and the important function of the shock absorption effect of the shock absorber on the stability and the shock resistance of the bridge is effectively shown.
In some embodiments, the first bridge pier comprises a first support, the shock absorber and a first pier column which are sequentially connected from bottom to top, the first support is fixed on the base plate, and the first bridge deck is supported on the first pier column.
In some embodiments, the shock absorber comprises one or both of an E-type shock absorber and a hydraulic shock absorber mounted on a mount connected between the first mount and the first pier.
In some embodiments, the mounting seats include a connecting plate, a first mounting seat and a second mounting seat which are separated from each other, the first mounting seat and the second mounting seat are oppositely arranged in the length direction of the anti-seismic bridge, the upper end of the first mounting seat is fixed to the lower end of the first pier stud, the lower end of the first mounting seat is suspended, the lower end of the second mounting seat is fixed to the upper end of the first support, the upper end of the second mounting seat is suspended, and the connecting plate is arranged between the first mounting seat and the second mounting seat and is mounted on the first mounting seat and the second mounting seat through a first vertical pin;
the E-shaped shock absorber is horizontally arranged on one side of the connecting plate, two ends of the E-shaped shock absorber respectively extend into the first mounting seat and the second mounting seat, and the first vertical pin shaft penetrates through the E-shaped shock absorber; and the hydraulic shock absorbers are arranged along the length direction of the anti-seismic bridge and are arranged on the first mounting seat and the second mounting seat.
In some embodiments, the first vertical pin is a medium temperature tempered stainless steel pin.
In some embodiments, the horizontal dimension of the external shape of the shock absorber matches the horizontal dimension of the external shape of the first pier, and the height dimension of the shock absorber is not less than half of the height dimension of the first pier.
In some embodiments, the excitation device comprises a housing, a voice coil motor, and an actuator; the top of the box body is provided with a sliding rail extending along the width direction of the anti-seismic bridge, the lower surface of the base plate is provided with a sliding block, and the base plate is supported on the sliding rail through the sliding block; the voice coil motor is arranged in the box body, and the transmission mechanism is respectively connected with the voice coil motor and the substrate; the transmission mechanism transmits the vibration generated by the voice coil motor to the substrate, and the substrate vibrates along the slide rail.
In some embodiments, the actuator is an actuator plate, one end of the actuator plate is connected to the voice coil motor, the other end of the transmission plate is connected with the base plate;
the transmission mechanism is a stroke amplification mechanism, the stroke amplification mechanism comprises a first connecting rod, a second connecting rod and a third connecting rod, the first connecting rod, the second connecting rod and the third connecting rod are all horizontally arranged, the first connecting rod and the third connecting rod are parallel and positioned on one side of the second connecting rod, the length of the third connecting rod is greater than that of the first connecting rod, and the position of the third connecting rod is higher than that of the first connecting rod; one end of the first connecting rod is hinged to the voice coil motor, the other end of the first connecting rod is hinged to the middle of the second connecting rod, one end of the second connecting rod is hinged to the box body, the other end of the second connecting rod is hinged to one end of the third connecting rod, and the other end of the third connecting rod is connected with the base plate.
In some embodiments, the excitation device further comprises an operating handle disposed on the housing, the operating handle being configured to adjust a frequency and an amplitude of the voice coil motor.
In some embodiments, the bridge further comprises a transparent cover, the transparent cover is arranged on the excitation device, and the bridge and the substrate are both located in the transparent cover.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of a popular science apparatus for showing a shock-absorbing structure and effect of a bridge according to an embodiment of the present invention;
FIG. 2 isbase:Sub>A cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken at B-B of FIG. 1;
FIG. 4 is an enlarged schematic view at C of FIG. 1;
FIG. 5 is an enlarged schematic view at D of FIG. 1;
FIG. 6 is an enlarged schematic view at E in FIG. 2;
FIG. 7 is a schematic view of a stroke enlarging mechanism of a popular science apparatus for showing the shock absorbing structure and effect of a bridge according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a bridge according to an embodiment of the present invention.
Reference numerals:
a science popularization device 1000 for displaying the shock absorption structure and effect of the bridge; an excitation device 1; a box 101; a voice coil motor 102; a transmission mechanism 103; a drive plate 1031; a stroke enlarging mechanism 1032; the first link 1032a; a second link 1032b; a third link 1032c; a slide rail 104; an operating handle 105; a transparent cover 5; a substrate (2); a slider 201; an anti-seismic bridge 3; a first pier 301; a first support 3011; first pier 3012; a shock absorber 3013; e-type shock absorbers 30131; a hydraulic shock absorber 30132; a mounting seat 30133; a connecting plate 30133a; a first mount 30133b; a second mount 30133c; a first vertical pin 30133d; a second vertical pin 30133e; a first deck 302; a first pylon structure 303; a third pier 3031; a damper 30311; a first pylon 3032; a first cord 3033; control bridge 4; a second pier 401; a second support 4011; a second pier 4012; a second deck 402; a second pylon structure 403; a fourth pier 4031; a second pylon 4032; a second cord 4033; a transparent cover 5.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A popular science apparatus 1000 for showing a shock absorbing structure and effect of a bridge according to an embodiment of the present invention is described with reference to fig. 1 to 8.
As shown in fig. 1 and 8, the science popularization device 1000 for showing the shock absorption structure and effect of the bridge according to the embodiment of the invention comprises a base plate 2, a vibration excitation device 1 and the bridge. The vibration excitation device 1 is positioned below the substrate 2 and connected with the substrate 2, and the vibration excitation device 1 is used for simulating seismic vibration and transmitting the vibration to the substrate 2; the bridge is arranged above the base plate 2 and is divided into an anti-seismic bridge 3 and a comparison bridge 4, the anti-seismic bridge 3 comprises a first pier 301 arranged on the base plate 2 and a first bridge deck 302 supported on the first pier 301, the comparison bridge 4 comprises a second pier 401 arranged on the base plate 2 and a second bridge deck 402 supported on the second pier 401, and the first pier 301 and the second pier 401 are different in that the first pier 301 is provided with a shock absorber 3013.
Specifically, the excitation device 1 is located below the substrate 2 and connected to the substrate 2, and the excitation device 1 is configured to simulate seismic vibration and transmit the vibration to the substrate 2. It is understood that the excitation device 1 generates excitation with a certain frequency and amplitude, simulates seismic vibration, and transmits the vibration to the substrate 2 to vibrate the substrate 2.
The bridge is disposed above the substrate 2, i.e., the bridge is fixed on the upper surface of the substrate 2 as a phenomenon exhibiting portion. In order to show the shock absorption structure and effect of the bridge, the bridge is divided into an anti-seismic bridge 3 and a contrast bridge 4. The anti-seismic bridge 3 and the comparison bridge 4 are similar in structure and overall dimension, and the difference is that the anti-seismic bridge 3 is provided with a shock absorber 3013, and the comparison bridge 4 is not provided with a shock absorber. In more detail, the anti-seismic bridge 3 comprises a first pier 301 arranged on the base plate 2 and a first bridge deck 302 supported on the first pier 301, the comparison bridge 4 comprises a second pier 401 arranged on the base plate 2 and a second bridge deck 402 supported on the second pier 401, and the first pier 301 and the second pier 401 are different in that the first pier 301 is provided with a damper 3013, namely the first pier 301 is provided with the damper 3013, the structure of the damper 3013 can be visually displayed in front of an audience, and the second pier 401 is not provided with the damper.
When the vibration excitation device 1 generates vibration excitation, the substrate 2 vibrates, the shock absorbers 3013 are arranged on the first bridge piers 301 of the anti-seismic bridge 3, the shock absorbers 3013 are subjected to energy consumption deformation, the energy transmitted to the first bridge piers 301 by the substrate 2 is dissipated, audiences can visually observe the energy consumption deformation process of the shock absorbers 3013, the second bridge piers 401 of the comparison bridge 4 are free of shock absorbers and do not have the shock absorption and energy consumption functions, the first bridge piers 301 and the second bridge piers 401 are observed through comparison, the shock absorption principle of the shock absorbers 3013 can be visually and easily understood by the audiences, and the shock absorption effect of the shock absorbers 3013 can be visually observed by the audiences through comparison and observation of the vibration conditions of the first bridge deck 302 and the second bridge deck 402. In order to amplify the earthquake vibration effect and more intuitively show the vibration absorption effect of the vibration absorber 3013, markers for showing the vibration effect can be arranged on the first bridge deck 302 and the second bridge deck 402, for example, vehicle-mounted saplings are respectively placed on the first bridge deck 302 and the second bridge deck 402, or an elastic flexible shaft is respectively erected on the first bridge deck 302 and the second bridge deck 402, so that when the vibration excitation device 1 generates vibration excitation, the vibration degrees of the first bridge deck 302 and the second bridge deck 402 can be more obviously seen by observing the saplings on the first bridge deck 302 and the second bridge deck 402 or the intensity of shaking of the elastic flexible shafts on the first bridge deck 302 and the second bridge deck 402.
As shown in fig. 1 to 3 and 8, the design of the anti-seismic bridge 3 and the reference bridge 4 according to the embodiment of the present invention may refer to the actual external structure of the marine bridge, and the external dimensions of the anti-seismic bridge 3 and the reference bridge 4 are adjusted relative to the external dimensions of the marine bridge in consideration of the overall appearance and the display effect, and in particular, the external dimensions of the shock absorbers 3013 of the anti-seismic bridge 3 are exaggerated to enhance the display effect. The earthquake-resistant bridge 3 comprises a first bridge pier 301 and a first bridge deck 302, and also comprises a first cable-tower structure 303; the first pylon structure 303 comprises a third pier 3031, a first pylon 3032 and a first cable 3033 (see fig. 8), wherein the third pier 3031 is arranged on the base plate 2, the third pier 3031 is provided with a damper 30311 (see fig. 2), the structure of the damper 30311 can be visually displayed in front of audiences, and the damper 30311 on the third pier 3031 can be the same as or different from the shock absorber 3013 on the first pier 301. The first cable tower 3032 spans the first bridge deck 302 and is supported on the third bridge pier 3031, the first cable 3033 (see fig. 8) penetrates through a through hole at the upper end of the first cable tower 3032, and two ends of the first cable 3033 are respectively fixed on the first bridge deck 302 through first swing bolts, so that the cable-stayed bridge is different from an actual marine bridge body, the characteristics of a cable-stayed bridge are weakened to a certain extent, the overall aesthetic harmony of a product is ensured, and the display purpose and effect of the popular science apparatus 1000 for displaying the shock absorption structure and the effect of the bridge are not influenced. The reference bridge 4 comprises, in addition to the second piers 401 and the second deck 402 described above, a second pylon 4032 structure 403; the second cable tower 4032 structure 403 includes a fourth pier 4031, a second cable tower 4032 and a second cable rope 4033 (see fig. 8), the fourth pier 4031 is disposed on the base plate 2, no damper is disposed on the fourth pier 4031, the second cable tower 4032 spans the second deck 402 and is supported on the fourth pier 4031, the second cable rope 4033 passes through an upper end of the second cable tower 4032, and both ends of the second cable rope 4033 are fixed on the second deck 402 by second knuckle bolts, which is different from an actual marine bridge body and weakens characteristics of a cable-stayed bridge to some extent, but guarantees aesthetic compatibility of the product as a whole and does not affect the display purpose and effect of the device. The anti-seismic bridge 3 and the comparison bridge 4 of the embodiment of the invention adopt bridge body structures imitating the actual appearance of the marine bridge, which is beneficial for the public to deeply understand the mystery of the engineering of the country through the marine bridge.
Similarly, when the excitation device 1 generates excitation, the substrate 2 vibrates, since the damper 30311 is arranged on the third pier 3031 of the anti-seismic bridge 3, the damper 30311 generates energy consumption deformation, and the energy transmitted to the third pier 3031 by the substrate 2 is dissipated, so that a spectator can visually observe the energy consumption deformation process of the damper 30311, and compared with the situation that the fourth pier 4031 of the bridge 4 does not have the energy consumption and vibration reduction function because of the damper 30311 being free, by comparing and observing the third pier 3031 and the fourth pier 4031, the spectator can visually and easily understand the vibration reduction principle of the damper 30311, and by comparing and observing the vibration conditions of the first pylon 3032 and the second pylon 4032, the spectator can visually see the vibration reduction effect of the damper 30311.
According to the science popularization device 1000 for displaying the bridge damping structure and the bridge damping effect, the vibration excitation device 1 is used for generating vibration excitation with certain frequency and amplitude to simulate seismic vibration, so that the substrate 2 vibrates. By comparing and observing the shock absorber 3013 of the first pier 301 of the anti-seismic bridge 3 with the second pier 401, audiences can intuitively and easily understand the structure and the shock absorption principle of the shock absorber 3013; by comparing and observing the first bridge deck 302 and the second bridge deck 402, the marker of the vibration effect on the first bridge deck 302 and the marker of the vibration effect on the second bridge deck 402, the audience can visually see the vibration absorbing effect of the vibration absorber 3013. The science popularization device 1000 for displaying the bridge damping structure and the bridge damping effect of the embodiment of the invention enables audiences to have a deep impression by intuitively displaying the damping principle and the damping effect of the damper 3013, achieves the purposes of scientificity and interestingness of exhibits, effectively shows the serious damage of earthquake disasters to buildings such as bridges and the like, and plays an important role of the damping effect of the damper 3013 in the stability and the shock resistance of the bridges.
In some embodiments, as shown in fig. 1 and 4, the first pier 301 includes a first support 3011, a shock absorber 3013, and a first pier 3012 connected in sequence from bottom to top, the first support 3011 is fixed on the base 2 to provide a mounting location for the shock absorber 3013, and the first bridge deck 302 is supported on the first pier 3012. Through setting up bumper 3013 between first support 3011 and first pier 3012, can play the vibration energy that dissipation base plate 2 transmitted, avoid base plate 2 vibration to transmit for first bridge floor 302 to the damping effect of realizing first bridge floor 302. As shown in fig. 1 and 5, the second pier 401 includes a second support 4011 and a second pier 4012 connected in sequence from bottom to top, the second support 4011 is fixed on the base plate 2 to provide support for the second pier 4012, and the second bridge deck 402 is supported on the second pier 4012. Since the second support 4011 and the second pier 4012 are directly rigidly connected without a shock absorber therebetween, the vibration of the base plate 2 is transmitted to the second deck 402 through the second pier 401, so that the second deck 402 vibrates significantly with respect to the first deck 302. Therefore, by comparing and observing the shock absorber 3013 of the first pier 301 of the anti-seismic bridge 3 with the second pier 401, the structure and the shock absorption principle of the shock absorber 3013 can be intuitively and easily understood by audiences; by comparing the first deck 302 with the second deck 402, the marker of the vibration effect on the first deck 302 with the marker of the vibration effect on the second deck 402, it is possible to enable the audience to visually see the vibration absorbing effect of the vibration absorber 3013.
In some embodiments, shock absorbers 3013 include one or both of E-type shock absorbers 30131 and hydraulic shock absorbers 30132, E-type shock absorbers 30131 or/and hydraulic shock absorbers 30132 being mounted on mount 30133, mount 30133 being connected between first mount 3011 and first pier 3012. That is, only the E-type shock absorber 30131, only the hydraulic shock absorber 30132, or both the E-type shock absorber 30131 and the hydraulic shock absorber 30132 (see fig. 4) may be installed between the first pedestal 3011 and the first pier 3012. In comparison, the installation of the E-type vibration absorber 30131 and the hydraulic vibration absorber 30132 at the same time is more effective than the installation of only the E-type vibration absorber 30131 or the hydraulic vibration absorber 30132.
In some embodiments, as shown in fig. 4, the mounting seat 30133 includes a connecting plate 30133a, a first split mounting seat 30133b and a second split mounting seat 30133c, the first mounting seat 30133b and the second mounting seat 30133c are disposed opposite to each other in the length direction of the anti-seismic bridge 3, the upper end of the first mounting seat 30133b is fixed to the lower end of the first pier 3012, the lower end of the first mounting seat 30133b is suspended, the lower end of the second mounting seat 30133c is fixed to the upper end of the first support 3011, the upper end of the second mounting seat 30133c is suspended, and the connecting plate 30133a is disposed between the first mounting seat 30133b and the second mounting seat 30133c and connected to the first mounting seat 30133b and the second mounting seat 30133c through a first vertical pin 30133 d. The structural design of the mounting seat 30133 facilitates installation of the E-shaped shock absorber 30131 and the hydraulic shock absorber 30132, and facilitates visual observation of the shock absorber 3013 and deformation energy consumption processes of the shock absorber 3013 by viewers. The E-shaped shock absorber 30131 is horizontally arranged on one side of the connecting plate 30133a, two ends of the E-shaped shock absorber 3013 respectively extend into the first mounting seat 30133b and the second mounting seat 30133c, and the first vertical pin 30133d penetrates through the E-shaped shock absorber 30131 and the connecting plate 30133a; preferably, the connecting plates 30133a and the E-type shock absorbers 30131 are equal in number and are each plural, for example, as shown in fig. 1, the connecting plates 30133a and the E-type shock absorbers 30131 are each 2 in number; preferably, a second vertical pin 30133E is further included, and the second vertical pin 30133E passes through the connecting plate 30133a and the middle section of the E-shaped shock absorber 30131. The hydraulic shock absorbers 30132 are arranged along the length direction of the anti-seismic bridge 3, and the hydraulic shock absorbers 30132 are mounted on the first mounting seat 30133b and the second mounting seat 30133c, that is, the hydraulic shock absorbers 30132 are positioned and fixed in the vertical direction through the split type first mounting seat 30133b and the second mounting seat 30133 c. As shown in fig. 1, when the hydraulic shock absorber 30132 and the E-type shock absorber 30131 are installed at the same time, on the one hand, the shock excitation device 1 generates shock excitation, the hydraulic shock absorber 30132 absorbs vibration energy in the horizontal direction, and the E-type shock absorber 30131 is plastically deformed during vibration, so that the operating principle of the shock absorber 3013 of the actual bridge is shown to viewers, and on the other hand, when the vibration load is small, a good shock absorbing effect can be achieved.
Preferably, the E-shaped shock absorber 3013 is made of 6061 aluminum alloy plate with low compressive yield strength, and can be guaranteed to be in a plastic deformation state in half of the vibration process, so that the working principle of the shock absorber 3013 of the actual bridge is shown to the audience.
In some embodiments, as shown in fig. 4, the first vertical pin 30133d and the second vertical pin 30133E are stainless steel pins that are subjected to medium temperature tempering, so that the first vertical pin 30133d and the second vertical pin 30133E can be prevented from being scratched by the plastically deformed E-shaped shock absorber 30131 and causing the interference fit to fail.
In some embodiments, as shown in fig. 1 and 4, shock absorbers 3013 have a profile horizontal dimension matching a profile horizontal dimension of first pier 3012, and shock absorbers 3013 have a height dimension not less than half of a height dimension of first pier 301. That is, in the same way as the actual construction bridge, the external dimension of the shock absorber 3013 is enlarged relative to the external dimension of the actual construction bridge, and the external dimension of the shock absorber 3013 in this embodiment is enlarged relative to the external dimension of the anti-seismic bridge 3, so that the existence of the shock absorber 3013 and the shock absorption effect of the shock absorber 3013 are emphasized, and the display purpose of the popular science apparatus 1000 for displaying the shock absorption structure and effect of the bridge is better displayed. Similarly, the external dimension of the damper 30311 is also enlarged, so that the existence and the vibration damping effect of the damper 30311 are emphasized, and the display purpose of the popular science apparatus 1000 for displaying the bridge vibration damping structure and the effect is better realized.
In some embodiments, as shown in fig. 1 and 2, the excitation device 1 includes a case 101, a voice coil motor 102, and an actuator 103. The box 101 can be made of aluminum profiles, is economical and convenient, and can hide the voice coil motor 102 and the transmission mechanism 103, so that the attractiveness of the voice coil motor is improved. The top of the box body 101 is provided with a slide rail 104 extending along the width direction of the anti-seismic bridge 3, the lower surface of the substrate 2 is provided with a slide block 201, and the substrate 2 is supported on the slide rail 104 through the slide block 201; the voice coil motor 102 is arranged in the box body 101, and the transmission mechanism 103 is respectively connected with the voice coil motor 102 and the substrate 2; the actuator 103 transmits the vibration generated by the voice coil motor 102 to the substrate 2, and the substrate 2 vibrates along the slide rail 104. It can be understood that, by providing the slide rail 104 and the slider 201, the substrate 2 can be supported, a bridge with a larger area can be more stably supported, and meanwhile, the movement of the substrate 2 can be assisted. The slide rail 104 and the slider 201 have no transmission function, and power is directly transmitted from the voice coil motor 102 to the substrate 2 through the transmission mechanism 103. The voice coil motor 102 is used as a power source, so that the characteristics of the motor are reasonably utilized, and the cost is reduced compared with a scheme of a linear motor.
In some embodiments, as shown in fig. 2 and 6, the actuator 103 is an actuator plate 1031, one end of the actuator plate 1031 is connected to the voice coil motor 102, and the other end of the actuator plate 1031 is connected to the base plate 2; the vibration generated by the voice coil motor 102 is transmitted to the substrate 2 through the transmission plate 1031, and the structure is simple.
In some embodiments, as shown in fig. 7, the transmission mechanism 103 is a stroke enlarging mechanism 1032, the stroke enlarging mechanism 1032 includes a first link 1032a, a second link 1032b, and a third link 1032c, the first link 1032a, the second link 1032b, and the third link 1032c are all horizontally disposed, the first link 1032a and the third link 1032c are parallel and located on one side of the second link 1032b, the length of the third link 1032c is greater than that of the first link 1032a, and the position of the third link 1032c is higher than that of the first link 1032a; one end of the first link 1032a is hinged to the voice coil motor 102, the other end of the first link 1032a is hinged to the middle of the second link 1032b, one end of the second link 1032b is hinged to the casing 101, the other end of the second link 1032b is hinged to one end of the third link 1032c, and the other end of the third link 1032c is connected to the base plate 2. The transmission mechanism 103 adopts the stroke amplification mechanism 1032, so that the excitation displacement of the voice coil motor 102 can be effectively amplified and transmitted to the substrate 2, for example, the excitation displacement of the voice coil motor 102 can be amplified by 2 times and transmitted to the substrate 2, so that the vibration displacement of the substrate 2 is 2 times of the vibration displacement of the voice coil motor 102, for example, the maximum vibration displacement of the voice coil motor 102 is 25mm, and after the amplification by the stroke amplification mechanism 1032, the maximum vibration displacement of the substrate 2 can reach 50mm, thereby realizing vibration with larger amplitude and enhancing the demonstration effect. In addition, the stroke enlarging mechanism 1032 is simple in structure and easy to machine and lengthen.
In some embodiments, as shown in fig. 1 and 3, the excitation device 1 further includes an operating handle 105 disposed on the casing 101, and the operating handle 105 is used to adjust the frequency and amplitude of the voice coil motor 102, so as to implement interaction and enhance the experience of the user.
In some embodiments, as shown in fig. 1 to 3, a transparent cover 5 is further included, the transparent cover 5 is disposed on the excitation device 1, and the bridge and the substrate 2 are both located in the transparent cover 5. Through setting up translucent cover 5, can avoid spectator's touching the bridge on the one hand, play the guard action to the bridge, on the other hand can make things convenient for spectator to clearly see the bridge.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a show bridge shock-absorbing structure and popular science device of effect which characterized in that includes:
a substrate;
the vibration excitation device is positioned below the substrate and connected with the substrate, and is used for simulating seismic vibration and transmitting the vibration to the substrate;
the bridge, the bridge sets up just divide into antidetonation bridge and contrast bridge above the base plate, the antidetonation bridge is including setting up first pier on the base plate is in with support first bridge floor on the first pier, contrast bridge is including setting up second pier on the base plate is in with support the second bridge floor on the second pier, first pier with the difference of second pier lies in first pier has the bumper shock absorber.
2. The popular science apparatus for exhibiting the shock-absorbing structure and effect of a bridge according to claim 1, wherein the first pier comprises a first support, the shock absorber and a first pier stud which are sequentially connected from bottom to top, the first support is fixed on the base plate, and the first bridge deck is supported on the first pier stud.
3. The science popularization device for displaying the shock absorption structure and effect of a bridge according to claim 2, wherein the shock absorber comprises one or two of an E-shaped shock absorber and a hydraulic shock absorber, the E-shaped shock absorber or/and the hydraulic shock absorber is/are installed on an installation seat, and the installation seat is connected between the first support and the first pier stud.
4. The science popularization device for displaying the shock absorption structure and effect of a bridge according to claim 3,
the mounting seats comprise connecting plates, a first mounting seat and a second mounting seat which are separated, the first mounting seat and the second mounting seat are oppositely arranged in the length direction of the anti-seismic bridge, the upper end of the first mounting seat is fixed with the lower end of the first pier stud, the lower end of the first mounting seat is suspended, the lower end of the second mounting seat is fixed with the upper end of the first support, the upper end of the second mounting seat is suspended, and the connecting plates are arranged between the first mounting seat and the second mounting seat and are mounted on the first mounting seat and the second mounting seat through first vertical hinge pins;
the E-shaped shock absorber is horizontally arranged on one side of the connecting plate, two ends of the E-shaped shock absorber respectively extend into the first mounting seat and the second mounting seat, and the first vertical pin shaft penetrates through the E-shaped shock absorber; and the hydraulic shock absorbers are arranged along the length direction of the anti-seismic bridge and are arranged on the first mounting seat and the second mounting seat.
5. The popular science apparatus for exhibiting the shock absorbing structure and effect of a bridge according to claim 4, wherein the first vertical pin is a stainless steel pin subjected to medium temperature tempering.
6. The science popularization device for displaying the shock absorption structure and effect of a bridge according to claim 2,
the appearance horizontal dimension of bumper shock absorber with the appearance horizontal dimension of first pier stud matches, the height dimension of bumper shock absorber is not less than half of the height dimension of first pier.
7. The science popularization device for displaying the shock absorption structure and the effect of the bridge according to any one of claims 1 to 6, wherein the vibration excitation device comprises a box body, a voice coil motor and a transmission mechanism; the top of the box body is provided with a sliding rail extending along the width direction of the anti-seismic bridge, the lower surface of the base plate is provided with a sliding block, and the base plate is supported on the sliding rail through the sliding block; the voice coil motor is arranged in the box body, and the transmission mechanism is respectively connected with the voice coil motor and the substrate; the transmission mechanism transmits the vibration generated by the voice coil motor to the substrate, and the substrate vibrates along the slide rail.
8. The popular science apparatus for showing the shock absorption structure and effect of a bridge according to claim 7, wherein the transmission mechanism is a transmission plate, one end of the transmission plate is connected with the voice coil motor, and the other end of the transmission plate is connected with the base plate;
the transmission mechanism is a stroke amplification mechanism, the stroke amplification mechanism comprises a first connecting rod, a second connecting rod and a third connecting rod, the first connecting rod, the second connecting rod and the third connecting rod are all horizontally arranged, the first connecting rod and the third connecting rod are parallel and positioned on one side of the second connecting rod, the length of the third connecting rod is greater than that of the first connecting rod, and the position of the third connecting rod is higher than that of the first connecting rod; one end of the first connecting rod is hinged to the voice coil motor, the other end of the first connecting rod is hinged to the middle of the second connecting rod, one end of the second connecting rod is hinged to the box body, the other end of the second connecting rod is hinged to one end of the third connecting rod, and the other end of the third connecting rod is connected with the base plate.
9. The science popularization device for displaying the shock absorption structure and the effect of the bridge according to claim 7, wherein the vibration excitation device further comprises an operating handle arranged on the box body, and the operating handle is used for adjusting the frequency and the amplitude of the voice coil motor.
10. The popular science apparatus for showing the shock absorption structure and effect of a bridge according to any one of claims 1 to 6, further comprising a transparent cover, wherein the transparent cover is arranged on the excitation device, and the bridge and the substrate are both positioned in the transparent cover.
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| CN202211087075.9A CN115273644B (en) | 2022-09-07 | 2022-09-07 | Science popularization device for displaying bridge damping structure and effect |
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| CN202211087075.9A CN115273644B (en) | 2022-09-07 | 2022-09-07 | Science popularization device for displaying bridge damping structure and effect |
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| CN115273644B CN115273644B (en) | 2023-10-31 |
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| CN115273644B (en) | 2023-10-31 |
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