Vibration excitation device for tuned liquid damper reduced scale model test

Abstract

The utility model discloses a vibration excitation device for a tuned liquid damper reduced scale model test, which comprises a test platform, a limiting device for limiting a test water tank is arranged on the test platform, and the test water tank is used for loading test liquid; rollers are arranged below the test platform and enable the test platform to reciprocate along a set direction; the driving device is used for driving the test platform to reciprocate according to a set frequency; the device further comprises a data acquisition device, the data acquisition device comprises a data acquisition unit, an acceleration sensor and a wave height displacement meter, the acceleration sensor and the wave height displacement meter are connected with the data acquisition unit, the acceleration sensor is installed on the test platform and used for acquiring acceleration data of the test platform, and the wave height displacement meter is installed in the test water tank and used for acquiring wave height data of the test liquid. The vibration excitation device for the tuned liquid damper reduced scale model test is used for simulating the vibration of a building structure so as to research the movement of liquid in the tuned liquid damper.

Description

TECHNICAL FIELD

[0001] The utility model belongs to building structure vibration control technical field, specifically for a kind of exciting device for the scaled model test of tuned liquid damper. BACKGROUND

[0002] Tuned liquid damper is widely applied in wind-induced vibration control of high-rise building and high-rise structure, and its damping effect depends on the sloshing characteristics of internal liquid. However, due to the complexity of liquid movement, there is a lack of an experimental device capable of accurately simulating building structure vibration and collecting liquid movement data in real time in the prior art. The conventional experimental device usually has problems such as inconvenient excitation frequency adjustment and limited test objects, and it is difficult to meet the diversified test requirements of the scaled model of tuned liquid damper, so a device that can simulate the vibration of building structure in actual working environment is needed for experimental research. SUMMARY

[0003] Therefore, the utility model aims to provide a kind of exciting device for the scaled model test of tuned liquid damper, for simulating building structure vibration to study the movement of liquid inside tuned liquid damper.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A kind of exciting device for the scaled model test of tuned liquid damper, including test platform, the limiting device for limiting test water tank is equipped on the test platform, and the test water tank is used to load test liquid;The lower side of the test platform is equipped with a roller, and the roller makes the test platform reciprocating motion along the set direction;

[0006] Further including driving device, the driving device is used to drive the test platform to reciprocating motion according to set frequency;

[0007] Further including data acquisition device, the data acquisition device includes data collector and acceleration sensor, wave height displacement meter connected with the data collector, the acceleration sensor is installed on the test platform and is used to collect acceleration data of the test platform, and the wave height displacement meter is installed in the test water tank and is used to collect wave height data of test liquid.

[0008] Further, the limiting device includes two groups of limiting blocks respectively located at the front and rear ends of the test platform, and the two groups of limiting blocks are respectively limited to cooperate with the front and rear ends of the test water tank, and each group includes at least one limiting block.

[0009] Further, the limiting block is fixedly installed on the top surface of the test platform;Or, the installation position of the limiting block on the top surface of the test platform is adjustable.

[0010] Further, at least two installation stations are arranged on the test platform corresponding to the limiting blocks, and the installation positions of the limiting blocks can be adjusted between the installation stations.

[0011] Further, an adjusting track is arranged on the test platform, the limiting blocks are slidingly fitted on the adjusting track, and a locking mechanism is arranged on the limiting blocks for locking the positions of the limiting blocks on the adjusting track.

[0012] Further, the limiting block comprises a mounting seat and a limiting pad, the mounting seat is mounted on the test platform, and the limiting pad is mounted on the side of the mounting seat facing the test water tank.

[0013] Further, the driving device and the test platform are connected through a connecting rod mechanism for driving the test platform to reciprocate along a set direction and at a set frequency.

[0014] Further, the connecting rod mechanism comprises a rotating rod, a driven rod, a connecting rod and a horizontal limiter, the first end of the rotating rod is connected with the output shaft of the driving device for synchronous rotation, the second end of the rotating rod is hingedly connected with the first end of the connecting rod, the first end of the driven rod is hingedly connected with the second end of the connecting rod, the second end of the driven rod is connected with the test platform, and the horizontal limiter is matched with the driven rod to constrain the movement of the driven rod along a set direction.

[0015] Further, the driving device comprises a driving motor and a gearbox, and the gearbox is connected with the driving motor.

[0016] Further, the driving motor is an adjustable power motor for controlling the frequency of the reciprocating movement of the test platform.

[0017] The beneficial effects of the utility model lie in:

[0018] The exciting device for the scale model test of the tuned liquid damper has the advantages that the position of the test water tank is fixed through the limiting device arranged on the test platform, the test water tank is loaded with test liquid of a set depth, the test platform can reciprocate along a set direction through the rollers arranged below the test platform, the test platform is driven to reciprocate by the driving device and the frequency of the reciprocating movement is controlled, the vibration of the building structure is simulated and the exciting frequency can be adjusted, the acceleration data of the test platform and the wave height data of the test liquid are collected by the data acquisition device, and the sloshing characteristics of the test liquid under different exciting frequencies are obtained.

[0019] In conclusion, the excitation device for the scaled model test of the tuned liquid damper has the advantages of simple structure, convenient operation and wide test objects, and can test the rectangular tuned liquid damper, the cylindrical tuned liquid damper and the scaled model of the frame structure by changing the shape of the test water tank. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the purpose, technical scheme and beneficial effects of the utility model more clear, the utility model provides the following drawings for description:

[0021] Figure 1 It is a structural schematic view of the excitation device for the scaled model test of the tuned liquid damper of the utility model embodiment;

[0022] Figure 2 It is a top view of the test platform;

[0023] Figure 3 It is a structural schematic view of the driving device.

[0024] 10-test platform; 11-roller; 12-connecting shaft; 20-test water tank; 21-test liquid; 30-limiting device; 31-mounting seat; 32-limiting pad; 40-driving device; 41-driving motor; 42-speed changer; 43-output shaft; 44-rotating rod; 45-driven rod; 46-connecting rod; 47-horizontal limiter; 50-data collector; 51-acceleration sensor; 52-wave height displacement meter. DETAILED DESCRIPTION

[0025] The utility model will be further described below in combination with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0026] As Figure 1 Indicated, the excitation device for the scaled model test of the tuned liquid damper of the embodiment, including test platform 10, test platform 10 is equipped with the limiting device 30 for limiting test water tank 20, and test water tank 20 is used to load test liquid 21.Test platform 10 below is equipped with the roller 11, and the roller 11 makes test platform 10 can reciprocate along the set direction.

[0027] The excitation device for the scaled model test of the tuned liquid damper of the embodiment further includes driving device 40, and the driving device 40 is used to drive test platform 10 to reciprocate according to the set frequency.

[0028] The excitation device for the scaled-down model test of the tuned liquid damper in this embodiment also includes a data acquisition device. Specifically, the data acquisition device includes a data acquisition unit 50 and an accelerometer 51 and a wave height displacement meter 52 connected to the data acquisition unit 50. The accelerometer 51 is installed on the test platform 10 and is used to collect the acceleration data of the test platform 10. The wave height displacement meter 52 is installed in the test water tank 20 and is used to collect the wave height data of the test liquid 21.

[0029] like Figure 2 As shown, the limiting device 30 in this embodiment includes two sets of limiting blocks located at the front and rear ends of the test platform 10, respectively. The two sets of limiting blocks respectively engage with the front and rear ends of the test water tank 20, and each set includes at least one limiting block. In this embodiment, each set includes two limiting blocks, located on the left and right sides of the test water tank 20, to make the test water tank 20 more stable during vibration. The test water tank 20 in this embodiment is a rectangular tank, and the tuned liquid damper is a rectangular tuned liquid damper. Of course, in other embodiments, test water tanks with other structures such as circles can be used, and the installation positions of the limiting blocks on the test platform 10 can be adapted accordingly.

[0030] In some embodiments, the limiting block is fixedly installed on the top surface of the test platform 10, meaning the installation position of the limiting block on the test platform 10 is not adjustable. In this case, the test platform 10 can only accommodate test water tanks 20 with a set shape and size. Of course, in other embodiments, the installation position of the limiting block on the top surface of the test platform 10 can be adjusted. In this way, by adjusting the installation position of the limiting block on the test platform 10, it can be matched with test water tanks 20 of different shapes and sizes to achieve the technical objective of testing different tuned liquid dampers.

[0031] In this embodiment, the installation position of the limiting block on the top surface of the test platform 10 is adjustable. Specifically, there are several ways to adjust the position of the limiting block on the test platform 10. One implementation is that the test platform 10 has at least two installation positions corresponding to the limiting block, and the installation position of the limiting block can be adjusted between the installation positions, thereby changing the position distribution of the limiting block to adapt to test water tanks 20 of different shapes and sizes. Another implementation is that the test platform 10 is provided with an adjustment track, the limiting block is slidably installed on the adjustment track, and the limiting block is provided with a locking mechanism for locking its position on the adjustment track, which can also change the position distribution of the limiting block to adapt to test water tanks 20 of different shapes and sizes.

[0032] In the embodiment, the limiting block comprises a mounting seat 31 and a limiting pad 32, the mounting seat 31 is mounted on the test platform 10, and the limiting pad 32 is mounted on the side of the mounting seat 31 facing the test water tank 20, so as to achieve the technical purpose of limiting block installation and fixation and limiting cooperation with the test water tank 10.

[0033] As shown in Figure 3 the embodiment, the driving device 40 and the test platform 10 are connected by a connecting rod mechanism for transmission to drive the test platform 10 to reciprocate along the set direction and at the set frequency. Specifically, the driving device 40 comprises a driving motor 41 and a gearbox 42, the gearbox 42 is in transmission connection with the driving motor 41, and the connecting rod mechanism is arranged between the gearbox 42 and the test platform 10. In the preferred embodiment of the embodiment, the driving motor 41 adopts an adjustable power motor to control the frequency of the reciprocating motion of the test platform.

[0034] The connecting rod mechanism of the embodiment comprises a rotating rod 44, a driven rod 45, a connecting rod 46 and a horizontal limiter 47. The first end of the rotating rod 44 is connected with the output shaft 43 of the driving device 40 and the gearbox 42 for synchronous rotation, and the second end of the rotating rod 44 is hingedly connected with the first end of the connecting rod 46. The first end of the driven rod 45 is hingedly connected with the second end of the connecting rod 46, and the second end of the driven rod 46 is connected with the test platform 10, which is provided with a connecting shaft 12 for connecting with the driven rod 46. The horizontal limiter 47 cooperates with the driven rod 45 to constrain the movement of the driven rod 45 along the set direction. Specifically, in the embodiment, the driven rod 45 reciprocates along the horizontal direction under the limiting action of the horizontal limiter 47, thereby driving the test platform 10 to reciprocate along the set horizontal direction at the preset frequency.

[0035] The excitation device for the scaled model test of the tuned liquid damper in the embodiment fixes the position of the test water tank 20 by arranging the limiting device 30 on the test platform 10, and the test water tank 20 is loaded with test liquid 21 of a set depth; the test platform 10 can reciprocate along the set direction by installing the roller 11 below the test platform 10. In this way, the driving device 40 drives the test platform 10 to reciprocate and controls the frequency of the reciprocating motion to simulate the vibration of the building structure and adjust the excitation frequency; the data acquisition device respectively acquires the acceleration data of the test platform 10 and the wave height data of the test liquid 21 to obtain the sloshing characteristics of the test liquid 21 under different excitation frequencies.

[0036] The test procedure is as follows: before the test, the test water tank 20 is placed on the test platform 10 and fixed by the limiting device 30. The acceleration sensor 51 is installed on the test platform 10 and the wave height displacement meter 52 is installed in the test water tank 20 to ensure that the data acquisition device works normally. The test liquid is injected into the test water tank 20 to a preset depth. The driving motor 41 is started, and its power is adjusted to control the excitation frequency. The rotating rod 44 and the driven rod 45 drive the test platform 10 to move reciprocally along the horizontal direction under the limiting action of the horizontal limiter 47. The shaking data of the test liquid 21 are collected in real time by the acceleration sensor 51 and the wave height displacement meter 52, and the time history information is recorded. The power of the driving motor 41 is changed and / or the depth of the test liquid 21 in the test water tank 20 is changed, and the above steps are repeated for multiple tests. After the test is completed, the data are analyzed to obtain the shaking characteristics of the liquid under different excitation frequencies.

[0037] The above-described embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. The equivalent substitutions or transformations made by the person skilled in the art on the basis of the present application are all within the protection scope of the present application. The protection scope of the present application is subject to the claims.

Claims

1. A shaking device for a scaled model test of a tuned liquid damper, characterized by: The test platform is provided with a limiting device for limiting a test water tank used for loading test liquid, and a roller is arranged below the test platform to enable the test platform to reciprocate along a set direction. The test platform is driven to reciprocate at a set frequency by a driving device. The data acquisition device comprises a data collector, an acceleration sensor and a wave height displacement meter.

2. The exciter for a scaled model test of a tuned liquid damper according to claim 1, characterized by: The limiting device comprises two groups of limiting blocks arranged at the front and rear ends of the test platform respectively, and each group of limiting blocks is in limiting cooperation with the front and rear ends of the test water tank.

3. The exciter for a scaled model test of a tuned liquid damper according to claim 2, characterized by: The limiting blocks are fixedly arranged on the top surface of the test platform.

4. The exciter for a scaled model test of a tuned liquid damper according to claim 3, characterized by: The installation positions of the limiting blocks on the top surface of the test platform are adjustable.

5. The exciter for a scaled model test of a tuned liquid damper according to claim 3, characterized by: The test platform is provided with at least two installation stations corresponding to the limiting blocks, and the installation positions of the limiting blocks are adjustable between the installation stations.

6. The exciter for a scaled model test of a tuned liquid damper according to claim 3, characterized by: The test platform is provided with an adjusting track, and the limiting blocks are slidingly arranged on the adjusting track.

7. The exciter device for a scaled model test of a tuned liquid damper according to any one of claims 1 to 6, characterized in that: The limiting blocks comprise a mounting seat and a limiting pad, and the mounting seat is arranged on the test platform.

8. The exciter for a scaled model test of a tuned liquid damper according to claim 7, characterized by: The driving device and the test platform are connected by a connecting rod mechanism to drive the test platform to reciprocate along a set direction and at a set frequency.

9. The exciter for a scaled model test of a tuned liquid damper according to claim 7, characterized by: The connecting rod mechanism comprises a rotating rod, a driven rod, a connecting rod and a horizontal limiter.

10. The exciter for a scaled model test of a tuned liquid damper according to claim 9, characterized by: The driving device comprises a driving motor and a gearbox. The driving motor is an adjustable power motor to control the frequency of the reciprocating motion of the test platform.

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