Reduced scale model test device

Abstract

The utility model belongs to the technical field of testing devices, and particularly relates to a reduced scale model testing device which comprises a base, a foldable walking mechanism is installed on the top of the base and comprises a support fixed on the top of the base, a sliding rod is installed on the support in a sliding and inserting mode, and the top of the sliding rod is connected with a top plate. A hydraulic rod is connected between the top plate and the support, universal wheels are installed at the bottoms of the sliding rods, a six-degree-of-freedom movement mechanism is installed at the top of the base, an upper installation base is installed at the top of the six-degree-of-freedom movement mechanism, a motor is installed on the inner side of the upper installation base, and a rotary table is rotationally installed on the inner side of the upper installation base and connected with the output end of the motor. The top of the rotary table is provided with a fixed seat, the top of the fixed seat is provided with a model base, the top of the model base is provided with a bridge reduced scale model, the device facilitates the movement of the model before and after testing, can meet the two functions of wind tunnel testing and earthquake testing at the same time, and also can adjust the posture of the bridge model according to the experimental requirements.

Description

TECHNICAL FIELD

[0001] The utility model belongs to test device technical field, concretely relates to a scale model test device. BACKGROUND

[0002] The bridge scale model is a kind of bridge structure model reduced according to scale, is usually used in wind tunnel test, structural analysis and design verification. Through this model, engineer can study and test the behavior of bridge under actual condition without building full-size bridge, when wind tunnel test or seismic test of bridge scale model is carried out, generally, only simply fixed on the wind tunnel bottom plate or the base with simulating earthquake function, it is inconvenient to move before and after model measurement, and model can only be placed at fixed single angle and posture, cannot adjust position and angle. UTILITARIAN CONTENT

[0003] For the above problems, the utility model aims at providing a scale model test device, the device is set up foldable walking mechanism, while not affecting the fixed placement of the device, the convenience of movement is considered, the movement before and after model measurement is facilitated, and the device can simultaneously meet the functions of wind tunnel test and seismic test, by the setting of six-degree-of-freedom motion mechanism and motor, the position and angle of bridge scale model can be adjusted as required, to ensure that the initial conditions of each test are consistent, the posture of bridge model can also be adjusted according to experimental requirements, such as simulating different bridge deck inclination angles, the direction of bridge scale model can also be adjusted to simulate different wind directions, before test, by adjusting the posture of bridge model, presetting certain deformation state, the effect of simulating the initial deformation of bridge after being subjected to in real environment can also be achieved.

[0004] To achieve the above object, the utility model provides the following technical scheme: a scale model test device, including base, the top of base is installed foldable walking mechanism, the foldable walking mechanism includes the support of being fixed at the top of base, the support is slidably inserted and installed with slide rod, the top of slide rod is connected with top plate, hydraulic rod is connected between top plate and support, the bottom of slide rod is installed universal wheel, the top of base is installed six-degree-of-freedom motion mechanism, the top of six-degree-of-freedom motion mechanism is installed with upper mounting seat, the inside of upper mounting seat is installed motor, the inside of upper mounting seat is rotatably installed with rotary table, the output end of motor is connected with rotary table, the top of rotary table is equipped with fixed seat, the top of fixed seat is equipped with model base, the top of model base is equipped with bridge scale model.

[0005] The device has the advantages that: the foldable walking mechanism is arranged, the convenience of movement is considered while the device is fixed and placed, the movement of the model before and after measurement is facilitated, the device can meet the wind tunnel test and the earthquake test, the position and the angle of the bridge scale model can be adjusted according to the needs through the six-degree-of-freedom motion mechanism and the motor, the initial conditions of each test are ensured to be consistent, the posture of the bridge model can be adjusted according to the experimental requirements, different bridge surface inclination angles can be simulated, the direction of the bridge scale model can be adjusted to simulate different wind directions, the posture of the bridge model is adjusted before the test, a certain deformation state is preset, and the initial deformation of the bridge after being subjected to the real environment can be simulated.

[0006] In order to drive the upper mounting seat to adjust:

[0007] As a further improvement of the above technical solution: the six-degree-of-freedom motion mechanism comprises six groups of servo cylinders, the upper and lower ends of the servo cylinders are connected with ball hinges, and the other ends of the ball hinges are connected with the base and the upper mounting seat respectively.

[0008] The improved device has the advantages that: the six groups of servo cylinders of the six-degree-of-freedom motion mechanism operate to perform telescopic actions, the all-directional rotation function between the ball hinges and the base and the upper mounting seat drives the upper mounting seat to adjust.

[0009] In order to facilitate the fixing and dismounting and replacement of the model:

[0010] As a further improvement of the above technical solution: the top of the fixing seat is downwardly provided with a slot, the bottom of the model base is provided with a socket, the socket is connected with the slot in an inserting mode, and the model base and the fixing seat are connected through bolts.

[0011] The improved device has the advantages that: the bridge scale model to be tested is inserted and fixed on the top of the fixing seat through the socket, and the fixing seat and the model base are fixed through the bolts, so that the fixing of the bridge scale model is completed, and the fixing and dismounting and replacement of the model are facilitated.

[0012] In order to facilitate the installation and dismounting of the bridge scale model:

[0013] As a further improvement of the above technical solution: the universal wheel is a universal wheel with a brake.

[0014] The improved device has the advantages that: the universal wheel with the brake can be stopped when the universal wheel is grounded, and the installation and dismounting of the bridge scale model are facilitated.

[0015] In order to ensure the stability of the device during the test:

[0016] As a further improvement of the above technical solution: the bottom side of the base is connected with the screwing plate.

[0017] The improved device has the advantages that the device is fixed on the test site or the bottom plate in the wind tunnel through the cooperation of the screwing plate and the screw rod, and the stability of the device during the test can be ensured.

[0018] The parts not involved in the device are the same as or can be realized by the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective structural schematic view of the device;

[0020] Figure 2 It is a sectional view of the device;

[0021] Figure 3 It is a structural schematic view of the foldable walking mechanism in the device;

[0022] Figure 4 It is an installation structural schematic view of the six-degree-of-freedom motion mechanism in the device;

[0023] Figure 5 It is a local sectional structural schematic view of the device;

[0024] In the figure: 1, base; 2, foldable walking mechanism; 3, support; 4, sliding rod; 5, top plate; 6, hydraulic rod; 7, universal wheel; 8, six-degree-of-freedom motion mechanism; 9, upper mounting seat; 10, motor; 11, rotary table; 12, fixed seat; 13, insertion slot; 14, model base; 15, socket; 16, bridge scale model; 17, bolt; 18, screwing plate; 19, servo electric cylinder; 20, ball hinge. DETAILED DESCRIPTION

[0025] In order to make the skilled in the art better understand the technical solutions of the present application, the present application will be described in detail below in combination with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0026] As Figures 1-5As shown, a scale model test device, including a base 1, the top of the base 1 is provided with a foldable walking mechanism 2, the walking mechanism 2 includes a support 3 fixed on the top of the base 1, a slide rod 4 is slidably inserted on the support 3, the top of the slide rod 4 is connected with a top plate 5, a hydraulic rod 6 is connected between the top plate 5 and the support 3, the bottom of the slide rod 4 is provided with a universal wheel 7, the top of the base 1 is provided with a six-degree-of-freedom motion mechanism 8, the top of the six-degree-of-freedom motion mechanism 8 is provided with an upper mounting seat 9, the inner side of the upper mounting seat 9 is provided with a motor 10, the inner side of the upper mounting seat 9 is rotatably provided with a turntable 11, the turntable 11 is connected with the output end of the motor 10, the top of the turntable 11 is provided with a fixing seat 12, the top of the fixing seat 12 is provided with a model base 14, and the top of the model base 14 is provided with a bridge scale model 16.

[0027] The device can be conveniently moved while being fixed without affecting the device, and the device can simultaneously satisfy the functions of wind tunnel test and earthquake test, the position and angle of the bridge scale model 16 can be adjusted according to the needs through the six-degree-of-freedom motion mechanism 8 and the motor 10, so as to ensure that the initial conditions of each test are consistent, and the posture of the bridge model can be adjusted according to the experimental needs, such as simulating different bridge deck inclination angles, and the direction of the bridge scale model 16 can be adjusted to simulate different wind directions, and the posture of the bridge model can be adjusted before the test to preset a certain deformation state, which can also simulate the initial deformation of the bridge after being subjected to the real environment.

[0028] The six-degree-of-freedom motion mechanism 8 includes six groups of servo cylinders 19, the upper and lower ends of the servo cylinders 19 are connected with ball hinges, and the other ends of the ball hinges are connected with the base 1 and the upper mounting seat 9.

[0029] The six groups of servo cylinders 19 of the six-degree-of-freedom motion mechanism 8 respectively perform extension and contraction actions, and drive the upper mounting seat 9 to adjust through the omnidirectional rotation function between the ball hinges 20 and the base 1 and the upper mounting seat 9.

[0030] The top of the fixing seat 12 is downwardly provided with a slot 13, the bottom of the model base 14 is provided with a socket 15, the socket 15 is insertedly connected with the slot 13, and the model base 14 and the fixing seat 12 are connected through bolts 17.

[0031] The bridge scale model 16 to be tested is insertedly mounted on the top of the fixing seat 12 through the socket 15, and the fixing seat 12 and the model base 14 are fixed by using the bolts 17, so that the fixing and dismounting and replacement of the bridge scale model 16 are facilitated.

[0032] The universal wheel 7 is a universal wheel with a brake.

[0033] The universal wheel with brake is adopted, so that the device can be stopped when the universal wheel 7 lands, and the bridge scale model 16 is convenient to install and disassemble.

[0034] The bottom side of the base 1 is connected with the screw plate 18.

[0035] The device is fixed on the bottom plate in the test site or wind tunnel through the cooperation of the screw plate 18 and the screw rod, so that the stability of the device in the test process can be ensured.

[0036] The utility model discloses a working principle and use flow: the device uses, the bridge scale model 16 of waiting for testing is inserted in the top of fixed seat 12 through socket 15 and is fixed to fixed seat 12, model base 14 using bolt 17, complete the fixed bridge scale model 16, then, can push the device and move to test site or wind tunnel, after moving in place, control hydraulic rod 6 and make the action of stretching out, drive base 1 to move down, make base 1 drop to contact with ground, and make universal wheel 7 leave ground, and can be fixed on the bottom plate in test site or wind tunnel in the device according to need through the cooperation of screwing plate 18 and screw rod, guarantee the stability in the device test process, can start control six degree of freedom motion mechanism 8 operation, six groups servo cylinder 19 of six degree of freedom motion mechanism 8 run and carry out telescopic action respectively, through the all -round rotation function between ball hinge 20 and base 1, upper mounting seat 9, drive upper mounting seat 9 to adjust, to adjust the position and angle of bridge scale model 16 as needed, to ensure that the initial condition of each test is consistent, can also adjust the posture of bridge model according to experimental demand, such as simulating different bridge deck inclination angle, and motor 10 can drive turntable 11 together with bridge scale model 16 to rotate, thereby adjusting the direction of bridge scale model 16, thereby simulating different wind direction, cooperate six degree of freedom motion mechanism 8 to the posture adjustment function of bridge scale model 16, can carry out the aerodynamic characteristic test under each wind direction, before test, by adjusting the posture of bridge model, preset certain deformation state, also can play the role of simulating the initial deformation of bridge in real environment after being received, simultaneously, six degree of freedom motion mechanism 8 also has the function of simulating earthquake situation through its three translational degrees of freedom and three rotational degrees of freedom, make the device can satisfy two big functions of wind tunnel test and earthquake test simultaneously, after completing test, release the screwing of screwing plate 18, can control hydraulic rod 6 and drive universal wheel 7 to drop, and make base 1 re -leave ground, this time can push the device and leave test site or wind tunnel, and the device is also very simple to replace model base 14, only need to unscrew bolt 17, can take down model base 14, bridge scale model 16, replace, in conclusion, the device passes through setting up foldable walking mechanism 2, when not affecting the fixed placement of the device, consider the convenience of moving, simultaneously, the device can satisfy two big functions of wind tunnel test and earthquake test simultaneously, through the setting of six degree of freedom motion mechanism 8, motor 10, can adjust the position and angle of bridge scale model 16 as needed, to ensure that the initial condition of each test is consistent, can also adjust the posture of bridge model according to experimental demand, such as simulating different bridge deck inclination angle, also can adjust the direction of bridge scale model 16 to simulate different wind direction, before test, by adjusting the posture of bridge model, preset certain deformation state, also can play the role of simulating the initial deformation of bridge in real environment after being received.

[0037] It should be noted that the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0038] The principles and implementation manners of the present application are described by using specific examples in the present application. The above example is only used to help understand the method and core idea of the present application. The above description is only the preferred implementation manner of the present application. It should be noted that due to the limited expression of the text, there are objectively infinite specific structures. For ordinary skilled persons in the technical field, some improvements, decorations or changes can be made without departing from the principles of the present application. The above technical features can also be combined in an appropriate manner. These improvements, decorations, changes or combinations, or the direct application of the concept and technical solution of the present application to other occasions without improvement, should be regarded as the protection scope of the present application.

Claims

1. A scale model test device, characterized by: The invention comprises a base (1), a foldable walking mechanism (2) is installed on the top of the base (1), the foldable walking mechanism (2) comprises a bracket (3) fixed on the top of the base (1), a slide rod (4) is installed on the bracket (3), the top of the slide rod (4) is connected to the top plate (5), a hydraulic rod (6) is connected between the top plate (5) and the bracket (3), a universal wheel (7) is installed on the bottom of the slide rod (4), and a six-degree-of-freedom motion machine is installed on the top of the base (1). The six-degree-of-freedom motion mechanism (8) is provided with an upper mounting seat (9) on the top, a motor (10) is installed on the inner side of the upper mounting seat (9), a turntable (11) is rotatably installed on the inner side of the upper mounting seat (9), the turntable (11) is connected to the output end of the motor (10), a fixed seat (12) is provided on the top of the fixed seat (12), a model base (14) is provided on the top of the model base (14), and a bridge scale model (16) is provided on the top of the model base (14).

2. A scale model testing device according to claim 1, characterized in that: The six-degree-of-freedom motion mechanism (8) includes six groups of servo electric cylinders (19), the upper and lower ends of the servo electric cylinders (19) are connected to ball hinges, and the other ends of the ball hinges are respectively connected to the base (1) and the upper mounting seat (9).

3. The scale model test device according to claim 1, characterized in that: The top of the fixing seat (12) is provided with a slot (13) extending downwards, and the bottom of the model base (14) is provided with a socket (15), the socket (15) is inserted and connected with the slot (13), and the model base (14) and the fixing seat (12) are connected by bolts (17).

4. The scale model testing device according to claim 1, characterized in that: The universal wheel (7) is a universal wheel with a brake.

5. The scale model testing device according to claim 1, characterized in that: The bottom side of the base (1) is connected to the screw plate (18).

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