A model test device for vehicle flow load on a bridge

Abstract

The invention discloses a test device for the vehicle flow load model on a bridge, belonging to the technical field of vehicle-bridge coupling tests; it includes: a bridge segment model; a transmission mechanism fixedly arranged above the bridge segment model; a garage component and a vehicle receiving component, one end of the bridge segment model is fixedly connected to a vehicle guiding system, and the other end of the bridge segment model extends to the upper end of the vehicle receiving component and is detachably connected to the vehicle receiving component; a vehicle guiding component, which is arranged on the garage component and is used for introducing a model vehicle into a specific lane. The garage component set in the invention is a detachable gravity type, which is convenient for applying different bridge types and test environments, provides model vehicles of various vehicle types. At the same time, the gravity garage can control parameters such as the speed and acceleration of the model vehicle when it reaches the bridge deck by changing the angle of the garage, making the test device more economical and applicable.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-bridge coupling test, and particularly relates to a model test device for vehicle flow load on a bridge. Background Art

[0002] During the long-term service process of a bridge structure, under the repeated action of variable amplitude loads caused by vehicles, the bridge dynamic response and the stress concentration and fatigue problems of related key components are very prominent, seriously affecting the service performance of the bridge structure within the designed service life. The vehicle-induced damage of bridge components is related to the structural stress amplitude and the number of cycles caused by vehicle loads. The traffic flow passing through per unit time affects the number of cycles of the stress amplitude, and the axle weight and spacing affect the size of the stress amplitude. At the same time, highway bridges with potential safety hazards have gradually become fatal defects in the transportation network. It is an urgent need to conduct timely and accurate condition assessment on in-service bridges. However, the existing load tests can only be applied to a single bridge type.

[0003] Therefore, there is an urgent need for a model test device for vehicle flow load that can be applied to different bridge types. Summary of the Invention

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A model test device for vehicle flow load on a bridge, comprising:

[0006] A bridge segment model;

[0007] A transmission mechanism, which is fixedly arranged above the bridge segment model;

[0008] A garage assembly and a vehicle receiving assembly, one end of the bridge segment model is fixedly connected to a vehicle guiding system, and the other end of the bridge segment model extends to the upper end of the vehicle receiving assembly and is detachably connected to the vehicle receiving assembly;

[0009] A vehicle guiding assembly, which is arranged on the garage assembly and is used to introduce a model vehicle into a specific lane.

[0010] Further, the transmission mechanism includes a transmission shaft, a conveyor belt and a magnetic part. The number of transmission shafts is two, and the two transmission shafts are respectively rotatably arranged at both ends of the bridge segment model. Each transmission shaft has a plurality of teeth; the conveyor belt is sleeved on the two transmission shafts, and a plurality of tooth grooves matching with the teeth are arranged on the inner surface of the conveyor belt; the magnetic part is arranged in parallel on the conveyor belt.

[0011] Further, the garage assembly includes a garage body, a garage floor, a first telescopic plate and a telescopic hydraulic plate buckle;

[0012] The garage body is provided with an opening, and the bottom edge of the opening is hinged to the garage floor; a third baffle is arranged on the opening, and the third baffle is used to control the departure of the car.

[0013] One end of the first telescopic plate is hinged to the upper surface of the garage floor, and the other end of the first telescopic plate is slidably connected to the lower surface of the garage body through a first slide rail.

[0014] One end of the telescopic hydraulic plate buckle is clamped to the garage body, and the other end of the telescopic hydraulic plate buckle is clamped to the bridge segment model and abuts against the conveyor belt at the same time.

[0015] Further, the car receiving assembly includes a car receiving basket, a first baffle, a buffer plate, a base and a second telescopic plate.

[0016] The first baffle is an arc-shaped plate. One end of the first baffle is hinged to the upper surface of the base, and the other end of the first baffle is fixedly connected to the buffer plate.

[0017] The first end of the second telescopic plate is hinged to the upper surface of the base, and the second end of the second telescopic plate is slidably connected to the lower surface of the first baffle through a second slide rail.

[0018] The car receiving basket is arranged below the bridge segment model, and the base abuts against the car receiving basket.

[0019] Further, a movable baffle is arranged at one end of the car receiving basket close to the base.

[0020] Further, both the first telescopic plate and the second telescopic plate are hydraulic plates.

[0021] Further, a guide rail is arranged on the lower surface of the bridge segment model, and a slider is arranged on the car receiving basket, and the slider is arranged in cooperation with the guide rail.

[0022] Further, the car guiding assembly includes a car guiding belt body, the car guiding belt body is vertically arranged on the upper surface of the telescopic hydraulic plate buckle and is hinged to the telescopic hydraulic plate buckle; the car guiding belt body can be telescopic and movable.

[0023] Further, it further includes an information collector, an image sensor and a control terminal; the number of the information collectors is multiple, and the multiple information collectors are detachably arranged on the bridge segment model, the transmission mechanism, the garage assembly, the car receiving assembly and the car guiding assembly; each information collector is connected to one end of the image sensor; the other end of the image sensor is connected to the control terminal.

[0024] The present invention has the following beneficial effects:

[0025] 1. The garage component provided by the present invention is a detachable gravity type, which is convenient for applying to different bridge types and test environments. A variety of model vehicles of different vehicle types are provided. At the same time, the gravity garage can control parameters such as the speed and acceleration of the model vehicle when it reaches the bridge deck by changing the angle of the garage, making the test device more economical and applicable;

[0026] 2. By setting the bridge deck transmission mechanism and the vehicle guiding component, the present invention can make the model vehicle enter a specific lane to meet specific test requirements. At the same time, through the reasonable setting of the vehicle receiving component, the model vehicle can be recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the use of a vehicle flow load model test device on a bridge provided by the present invention;

[0028] Figure 2 is a schematic structural diagram of a vehicle flow load model test device on a bridge provided by the present invention;

[0029] Figure 3 in a vehicle flow load model test device on a bridge provided by the present invention Figure 2 is a bottom view;

[0030] Figure 4 in a vehicle flow load model test device on a bridge provided by the present invention Figure 2 is a top view;

[0031] Figure 5 in a vehicle flow load model test device on a bridge provided by the present invention Figure 2 is a side view;

[0032] Figure 6 in a vehicle flow load model test device on a bridge provided by the present invention Figure 2 is a rear view;

[0033] Figure 7 is a partial enlarged view of the garage component in a vehicle flow load model test device on a bridge provided by the present invention;

[0034] Figure 8 is a partial enlarged view of a single garage in a vehicle flow load model test device on a bridge provided by the present invention;

[0035] Figure 9 is a partial enlarged view of the vehicle guiding component in a vehicle flow load model test device on a bridge provided by the present invention;

[0036] Figure 10 is a partial enlarged view of the vehicle receiving component in a vehicle flow load model test device on a bridge provided by the present invention.

[0037] Wherein: 1. Garage assembly; 2. Transmission mechanism; 3. Vehicle receiving assembly; 4. Vehicle guiding assembly; 5. Garage body; 6. First telescopic plate; 7. Telescopic hydraulic plate buckle; 8. Garage floor; 9. First slide rail; 10. Vehicle receiving basket; 11. First baffle; 12. Buffer plate; 13. Second baffle; 14. Second telescopic plate. Specific embodiments

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0039] Embodiment 1

[0040] Refer to Figures 1-6 , in this embodiment, a vehicle flow load model test device on a bridge includes:

[0041] Bridge segment model, a bridge model made according to the actual bridge in proportion;

[0042] Transmission mechanism 2, the transmission mechanism 2 is fixedly arranged above the bridge segment model;

[0043] Garage assembly 1 and vehicle receiving assembly 3, one end of the bridge segment model is fixedly connected to the vehicle guiding system, and the other end of the bridge segment model extends to the upper end of the vehicle receiving assembly 3 and is detachably connected to the vehicle receiving assembly 3;

[0044] Vehicle guiding assembly 4, the vehicle guiding assembly 4 is arranged on the garage assembly 1 and is used to introduce the model vehicle into a specific lane.

[0045] It further includes an information collector, an image sensor and a control terminal; the number of information collectors is multiple, and the multiple information collectors are detachably arranged on the bridge segment model, the transmission mechanism 2, the garage assembly 1, the vehicle receiving assembly 3 and the vehicle guiding assembly 4; each information collector is connected to one end of the image sensor; the other end of the image sensor is connected to the control terminal. Specifically, image sensing components such as cameras are arranged around the entire vehicle flow load model test device on the bridge to record the vibration conditions of the bridge and the vehicle under different working conditions and obtain relevant test data.

[0046] The garage assembly 1 set in this embodiment is a detachable gravity type, which is convenient for applying different bridge types and test environments and provides model vehicles of various vehicle types; at the same time, the gravity type garage assembly 1 can control parameters such as the speed and acceleration of the model vehicle when reaching the bridge deck by changing the angle of the garage, making the test device more economical and applicable;

[0047] In this embodiment, by setting the transmission mechanism 2 and the vehicle guiding assembly 4, the model vehicle can enter a specific lane to meet specific test requirements. At the same time, the reasonable setting of the vehicle receiving assembly 3 can enable the model vehicle to be recycled.

[0048] Example 2

[0049] This embodiment is a detailed setting based on Embodiment 1.

[0050] Refer to Figures 7-8 , in this embodiment, the garage assembly 1 includes a garage body 5, a garage floor 8, a first telescopic plate 6, and a telescopic hydraulic plate buckle 7;

[0051] The garage body 5 is provided with an opening, and the bottom edge of the opening is hinged to the side edge of the garage floor 8 close to the opening; a third baffle is arranged on the opening, and the third baffle is used to control the departure of the car;

[0052] One end of the first telescopic plate 6 is hinged to the upper surface of the garage floor 8, and the other end of the first telescopic plate 6 is slidably connected to the lower surface of the garage body 5 through a first slide rail 9;

[0053] One end of the telescopic hydraulic plate buckle 7 is clamped to the garage body 5, and the other end of the telescopic hydraulic plate buckle 7 is clamped to the bridge segment model and abuts against the conveyor belt at the same time; the telescopic hydraulic plate buckle 7 is connected to the telescopic plate, and multiple garage assemblies 1 can be fixed at one end of the bridge deck, which can be applicable to different test conditions.

[0054] The garage assembly 1 is used to store vehicles of a specific model and can endow the model vehicle with a specific speed and acceleration when reaching the bridge deck by changing the angle between the garage and the ground.

[0055] Specifically, the garage is generally the same width as the model bridge in the test, and the height is three to four times that of the specific model vehicle stored.

[0056] Specifically, the garage body 5 is designed to be liftable to adapt to different working conditions.

[0057] Specifically, a model car of the same model is generally stored inside one garage; the length of the upper garage can be adjusted according to specific test requirements to store multiple rows of test model vehicles.

[0058] Specifically, the auxiliary structures inside the garage, such as the third baffle, the first telescopic plate 6, the telescopic hydraulic plate buckle 7, the garage floor 8, and the first slide rail 9, can be controlled by a computer program to meet the setting requirements of different working conditions.

[0059] Example 3

[0060] This embodiment is a detailed setting based on Embodiment 2.

[0061] Refer to Figure 9, in this embodiment, the vehicle guiding assembly 4 includes a vehicle guiding belt body, which is vertically arranged on the upper surface of the telescopic hydraulic plate buckle and is hinged to the telescopic hydraulic plate buckle; the vehicle guiding belt body is telescopic and movable, and is used to introduce the model vehicle driving out of the garage into a specific bridge lane through the swing of two baffles.

[0062] Specifically, the two hydraulic baffles with variable length and angle in the vehicle guiding assembly 4 are controlled by the attached small hydraulic plates and slide rails through a computer program.

[0063] Specifically, a magnetic part is arranged on the transmission mechanism 2. When the model vehicle is introduced onto the bridge surface through the vehicle guiding assembly 4, the magnetic part adsorbs the model vehicle onto a specific lane, and the model vehicle moves along with the transmission mechanism.

[0064] Embodiment 4

[0065] This embodiment is a detailed setting based on Embodiment 3.

[0066] Refer to Figure 10 , in this embodiment, the vehicle receiving assembly 3 includes a vehicle receiving basket 10, a first baffle 11, a buffer plate 12, a base, and a second telescopic plate 14;

[0067] The first baffle 11 is an arc-shaped plate. One end of the first baffle 11 is hinged to the upper surface of the base, and the other end of the first baffle 11 is fixedly connected to the buffer plate 12;

[0068] The first end of the second telescopic plate 14 is hinged to the upper surface of the base, and the second end of the second telescopic plate 14 is slidably connected to the lower surface of the first baffle 11 through a second slide rail, and is used to change the inclination angle of the first baffle 11 to adapt to vehicle models with different vehicle speeds and weights.

[0069] The vehicle receiving basket 10 is arranged below the bridge segment model, and the base abuts against the vehicle receiving basket 10.

[0070] The vehicle receiving assembly 3 can release the remaining kinetic energy of the model car driving to the other end of the bridge surface so that the car slides into the lower vehicle receiving basket 10. A buffer plate is arranged at the upper end of the vehicle receiving plate in the vehicle receiving assembly 3, which is used to consume the remaining kinetic energy of the model car and prevent the car from flying out of the entire test device. At the same time, the second baffle 13 can change the angle to adapt to model vehicles with different parameters;

[0071] Specifically, when the model vehicle drives towards the end of the bridge surface where the vehicle receiving device is located, it can drive over the arc-shaped plate attached to the vehicle receiving device, land on the first baffle 11, and fall into the lower vehicle receiving basket 10 through the arc of the first baffle 11.

[0072] Specifically, when the speed of the model vehicle is too fast, the model vehicle will hit the buffer plate 12 after passing through the first baffle 11. The buffer plate can convert the remaining kinetic energy of the model vehicle into elastic potential energy or other energy inside the device, and then the model vehicle slides into the car receiving basket 10.

[0073] Specifically, the position and angle of the second telescopic plate 14 can be changed through a computer program to adapt to different model vehicles and traffic flow parameters.

[0074] Specifically, a guide rail is provided on the lower surface of the bridge segment model, and a slider is provided on the car receiving basket 10. The slider is arranged in cooperation with the guide rail. When the model vehicle in the car receiving basket meets the requirements, the car receiving basket can slide to the other end of the bridge deck through the guide rail, facilitating the recycling of the model vehicle in the test.

[0075] Specifically, in the car receiving device, the use height of the first baffle 11 should be at least 30 cm higher than the bridge deck to prevent the model vehicle from detaching from the entire test device.

[0076] Preferably, a movable baffle is provided at one end of the car receiving basket 10 close to the base to prevent the model car from sliding out;

[0077] Preferably, both the first telescopic plate 6 and the second telescopic plate 14 are hydraulic plates.

[0078] Embodiment 5

[0079] This embodiment is a detailed setting based on Embodiment 4.

[0080] In this embodiment, the transmission mechanism 2 includes a transmission shaft, a conveyor belt, and a magnetic part. The number of transmission shafts is two, and the two transmission shafts are respectively rotatably arranged at both ends of the bridge segment model. Each transmission shaft has a plurality of teeth; the conveyor belt is sleeved on the two transmission shafts, and a plurality of tooth grooves matched with the teeth are arranged on the inner surface of the conveyor belt; the magnetic part is arranged parallel to the conveyor belt.

[0081] By driving the conveyor belt to move up and down, the magnetic part adsorbs the model car entering a specific lane with a specific speed acceleration and drives it to move from one end of the bridge deck to the other end.

[0082] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A vehicle flow load model test device on a bridge, characterized in that, Comprising: Bridge segment model; Transmission mechanism, which is fixedly arranged above the bridge segment model; Garage assembly and vehicle receiving assembly, one end of the bridge segment model is fixedly connected to the vehicle guiding system, and the other end of the bridge segment model extends to the upper end of the vehicle receiving assembly and is detachably connected to the vehicle receiving assembly; Vehicle guiding assembly, which is arranged on the garage assembly and is used for guiding the model vehicle into a specific lane; The garage assembly includes a garage body, a garage platform, a first telescopic plate and a telescopic hydraulic plate buckle; The garage body is provided with an opening, and the bottom edge of the opening is hinged to the garage platform; a third baffle is arranged on the opening, and the third baffle is used for controlling the departure of the trolley; One end of the first telescopic plate is hinged to the upper surface of the garage platform, and the other end of the first telescopic plate is slidably connected to the lower surface of the garage body through a first slide rail; One end of the telescopic hydraulic plate buckle is clamped to the garage body, and the other end of the telescopic hydraulic plate buckle is clamped to the bridge segment model and abuts against the conveyor belt at the same time; the telescopic hydraulic plate buckle is connected to the telescopic plate, and multiple garage assemblies can be fixed at one end of the bridge deck.

2. The vehicle flow load model test device on the bridge according to claim 1, characterized in that The transmission mechanism includes a transmission shaft, a conveyor belt and a magnetic part. The number of the transmission shafts is two, and the two transmission shafts are respectively rotatably arranged at both ends of the bridge segment model. Each transmission shaft has a plurality of teeth; the conveyor belt is sleeved on the two transmission shafts, and a plurality of tooth grooves matched with the teeth are arranged on the inner surface of the conveyor belt; the magnetic part is arranged parallel to the conveyor belt.

3. The on-bridge vehicle flow load model test device according to claim 1, characterized in that The vehicle receiving assembly includes a vehicle receiving basket, a first baffle, a buffer plate, a base and a second telescopic plate; The first baffle is an arc-shaped plate. One end of the first baffle is hinged to the upper surface of the base, and the other end of the first baffle is fixedly connected to the buffer plate; The first end of the second telescopic plate is hinged to the upper surface of the base, and the second end of the second telescopic plate is slidably connected to the lower surface of the first baffle through a second slide rail; The vehicle receiving basket is arranged below the bridge segment model, and the base abuts against the vehicle receiving basket.

4. The on-bridge vehicle flow load model test device according to claim 3, characterized in that A movable baffle is arranged at one end of the vehicle receiving basket close to the base.

5. The on-bridge vehicle flow load model test device according to claim 3, characterized in that Both the first telescopic plate and the second telescopic plate are hydraulic plates.

6. The on-bridge vehicle flow load model test device according to claim 3, characterized in that A guide rail is arranged on the lower surface of the bridge segment model, and a slider is arranged on the vehicle receiving basket. The slider is arranged in cooperation with the guide rail.

7. The on-bridge vehicle flow load model test device according to claim 1, characterized in that The vehicle towing assembly includes a vehicle towing belt body, which is vertically arranged on the upper surface of the telescopic hydraulic plate buckle and is hinged to the telescopic hydraulic plate buckle; the vehicle towing belt body is telescopic and movable.

8. The on-bridge vehicle flow load model test device according to claim 1, wherein it further includes an information collector, an image sensor and a control terminal; the number of the information collectors is multiple, and the multiple information collectors are detachably arranged on the bridge segment model, the transmission mechanism, the garage assembly, the vehicle receiving assembly and the vehicle towing assembly; each information collector is connected to one end of the image sensor; the other end of the image sensor is connected to the control terminal.

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