Large-scale test bed device for bridge expansion joint

Abstract

The utility model relates to the technical field of bridge expansion joint tests, in particular to a bridge expansion joint large-scale test bed device which comprises a base, a test groove, a first hydraulic oil cylinder, a first telescopic column, a push plate, a second hydraulic oil cylinder and a third hydraulic oil cylinder. When the large-scale test bed device for the bridge expansion joint is used, firstly, the bridge expansion joint device is placed in a test tank, a third hydraulic oil cylinder controls a fixing plate to fix the tail part of the device, and then a first hydraulic oil cylinder and a second hydraulic oil cylinder work to carry out an extrusion test on the structural strength of the device; liquid nitrogen is sprayed out through the spray head to cool the test environment and simulate the structural strength of the device at a low temperature, the heating panel is used for heating to heat the test environment, and the structural strength of the device at a high temperature is simulated, so that the test of the device is more comprehensive, and the test accuracy is fully improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge expansion joint tests, in particular to a large test bench device for bridge expansion joints. Background Technique

[0002] With the development of the economy, the number of automobiles in China is increasing continuously, and the construction of highway bridges is also developing rapidly. When putting highway bridges into use, it is necessary to detect the comprehensive performance of highway bridges, especially the performance test of highway bridge expansion joints, to meet the requirements of bridge deck deformation. Usually, expansion joints are set between two beam ends, between the beam end and the abutment, or at the hinged position of the bridge. It is required that the expansion joint can freely expand and contract in two directions parallel and perpendicular to the bridge axis, be firm and reliable. When the vehicle is driving, it should be smooth, without sudden jumps and noises, and it should be able to prevent rainwater, garbage and mud from seeping in and blocking. Installation, inspection, maintenance and removal of dirt should be simple and convenient. At the position where the expansion joint is set, the railing and the bridge deck paving should be disconnected.

[0003] In the Chinese utility model patent application publication specification CN209576767U, a comprehensive performance test bench for highway bridge expansion devices is disclosed, including a base. A fixed workbench is placed near one side edge of the top of the base. On both outer surfaces of the base near the center on both sides, vertical rods are welded vertically. There are four vertical rods in total, and they are divided into two groups. A cross rod is welded near the top edge between each group of two vertical rods. One side near the center of the bottom of the cross rod is fixed with a hydraulic cylinder. In the utility model, by fixing the bridge expansion joint on the fixed workbench and starting the hydraulic cylinder, the fixed plate squeezes the bridge expansion joint. By starting the horizontal hydraulic cylinder, the moving workbench squeezes the bridge expansion joint on both sides. By starting the transverse misalignment hydraulic cylinder and the vertical misalignment hydraulic cylinder, it can better detect the bridge expansion joint in multiple directions, and then can better improve the practicability of the detection equipment and facilitate the work of workers. However, when the device is tested, due to different temperatures, thermal expansion and contraction will occur, and reasonable test data cannot be obtained. For this reason, we propose a large test bench device for bridge expansion joints. Content of the Utility Model

[0004] The purpose of the utility model is to provide a large test bench device for bridge expansion joints to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] Large-scale test bench device for bridge expansion joints, including a base, a test tank, a first hydraulic cylinder, a first telescopic column, a pushing plate, a second hydraulic cylinder, a third hydraulic cylinder, a fixing plate, a controller, a protective cover, a fixing frame, a heating panel, a liquid nitrogen storage tank, a filling port, a sprayer, a nozzle, an inverter, a test room and a heat dissipation plate. The test tank is opened at the top of the base. The first hydraulic cylinder is fixedly arranged inside the test tank. The first telescopic column is fixedly arranged at one end of the first hydraulic cylinder. The pushing plate is fixedly arranged at one end of the first telescopic column. The second hydraulic cylinder is fixedly arranged on both sides inside the test tank.

[0007] Preferably, the third hydraulic cylinder is fixedly arranged at one end of the base, and the fixing plate is fixedly arranged at one end of the third hydraulic cylinder.

[0008] Through the above solution, by setting the fixing plate, the bridge expansion joint device can be fixed by the fixing plate.

[0009] Preferably, the controller is fixedly arranged on one side of the test tank, and the protective cover is fixedly arranged on the top of the test tank.

[0010] Through the above solution, by setting the protective cover, it can protect the staff beside during the experiment, and the protective cover forms a semi-sealed space that can provide heating and cooling effects.

[0011] Preferably, the fixing frame is fixedly arranged on both sides of the protective cover, and the heating panel is fixedly arranged inside the fixing frame.

[0012] Through the above solution, by setting the heating panel to heat the inside of the protective cover and improve the ambient temperature inside.

[0013] Preferably, the liquid nitrogen storage tank is fixedly arranged on the top of the protective cover, and the filling port is fixedly arranged on the top of the liquid nitrogen storage tank.

[0014] Through the above solution, by setting the liquid nitrogen storage tank to store low-temperature liquid nitrogen.

[0015] Preferably, the sprayer is fixedly arranged at the bottom of the liquid nitrogen storage tank, and the nozzle is fixedly arranged at the bottom of the sprayer.

[0016] Through the above solution, by setting the sprayer, the liquid nitrogen is sprayed out from the nozzle after passing through the sprayer to cool the environment inside the protective cover.

[0017] Preferably, the inverter is fixedly arranged on one side of the protective cover, the test room is opened inside the protective cover, and the heat dissipation plate is fixedly arranged on one side of the inverter.

[0018] Through the above solution, an inverter is set to adjust the power of the heating panel, and a heat dissipation plate is set so that the heat generated by the inverter can be dissipated in time.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] 1. When the large-scale test bench device for bridge expansion joints is in use, first place the bridge expansion joint device inside the test tank, control the fixed plate through the third hydraulic cylinder to fix the tail of the device, and then work through the first hydraulic cylinder and the second hydraulic cylinder to conduct a compressive test on its structural strength. During the test, liquid nitrogen is sprayed through the nozzle to cool the test environment and simulate the structural strength of the device at low temperatures, and the test environment is heated through the heating panel to simulate the structural strength of the device in a high-temperature environment. The above design makes the test of the device more comprehensive and fully improves the accuracy of the test.

[0021] 2. For the large-scale test bench device for bridge expansion joints, an inverter is set to adjust the power of the heating panel, a heat dissipation plate is set so that the heat generated by the inverter can be dissipated in time, and a protective cover is set so that it can protect the staff beside during the experiment, and the protective cover forms a semi-sealed space that can provide heating and cooling effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 is a schematic diagram of the liquid nitrogen storage tank and the inverter of the present utility model;

[0024] Figure 3 is a schematic diagram of the sprinkler and the nozzle of the present utility model;

[0025] Figure 4 is a schematic diagram of the test tank and the first hydraulic cylinder of the present utility model.

[0026] In the figure: 1, base; 2, test tank; 3, first hydraulic cylinder; 4, first telescopic column; 5, pushing plate; 6, second hydraulic cylinder; 7, third hydraulic cylinder; 8, fixed plate; 9, controller; 10, protective cover; 11, fixed frame; 12, heating panel; 13, liquid nitrogen storage tank; 14, filling port; 15, sprinkler; 16, nozzle; 17, inverter; 18, test room; 19, heat dissipation plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0028] Please refer to Figure 1 - Figure 4 as shown in the figure, a technical solution provided by the present utility model:

[0029] The large test bench device for bridge expansion joints includes a base 1, a test tank 2, a first hydraulic cylinder 3, a first telescopic column 4, a pushing plate 5, a second hydraulic cylinder 6, a third hydraulic cylinder 7, a fixing plate 8, a controller 9, a protective cover 10, a fixing frame 11, a heating panel 12, a liquid nitrogen storage tank 13, a filling port 14, a sprinkler 15, a nozzle 16, an inverter 17, a test chamber 18 and a heat dissipation plate 19. The test tank 2 is opened at the top of the base 1. The first hydraulic cylinder 3 is fixedly arranged inside the test tank 2. The first telescopic column 4 is fixedly arranged at one end of the first hydraulic cylinder 3. The pushing plate 5 is fixedly arranged at one end of the first telescopic column 4. The second hydraulic cylinder 6 is fixedly arranged on both sides inside the test tank 2.

[0030] In this embodiment, preferably, the third hydraulic cylinder 7 is fixedly arranged at one end of the base 1, and the fixing plate 8 is fixedly arranged at one end of the third hydraulic cylinder 7.

[0031] Through the above scheme, by setting the fixing plate 8, the bridge expansion joint device can be fixed by the fixing plate 8.

[0032] In this embodiment, preferably, the controller 9 is fixedly arranged on one side of the test tank 2, and the protective cover 10 is fixedly arranged on the top of the test tank 2.

[0033] Through the above scheme, by setting the protective cover 10, it can play a protective role for the surrounding staff during the experiment, and the protective cover 10 forms a semi - sealed space that can provide heating and cooling effects.

[0034] In this embodiment, preferably, the fixing frame 11 is fixedly arranged on both sides of the protective cover 10, and the heating panel 12 is fixedly arranged inside the fixing frame 11.

[0035] Through the above scheme, by setting the heating panel 12, it is used to heat the inside of the protective cover 10 to increase the ambient temperature inside it.

[0036] In this embodiment, preferably, the liquid nitrogen storage tank 13 is fixedly arranged on the top of the protective cover 10, and the filling port 14 is fixedly arranged on the top of the liquid nitrogen storage tank 13.

[0037] Through the above solution, a liquid nitrogen storage tank 13 is provided to store low-temperature liquid nitrogen.

[0038] In this embodiment, preferably, the sprayer 15 is fixedly arranged at the bottom of the liquid nitrogen storage tank 13, and the nozzle 16 is fixedly arranged at the bottom of the sprayer 15.

[0039] Through the above solution, by setting the sprayer 15, the liquid nitrogen is ejected from the nozzle 16 through the sprayer 15 to cool the environment inside the protective cover 10.

[0040] In this embodiment, preferably, the inverter 17 is fixedly arranged on one side of the protective cover 10, the test chamber 18 is opened inside the protective cover 10, and the heat dissipation plate 19 is fixedly arranged on one side of the inverter 17.

[0041] Through the above solution, the inverter 17 is provided to adjust the power of the heating panel 12, and the heat dissipation plate 19 is provided to enable the heat generated by the inverter 17 to be dissipated in time.

[0042] When the large test bench device for bridge expansion joints in this embodiment is in use, first place the bridge expansion joint device inside the test tank 2, control the fixing plate 8 through the third hydraulic cylinder 7 to fix the tail of the device, and then the first hydraulic cylinder 3 and the second hydraulic cylinder 6 work to conduct a compression test on its structural strength. During the test, liquid nitrogen is ejected from the nozzle 16 to cool the test environment to simulate the structural strength of the device at low temperature, and the heating panel 12 is used for heating to heat the test environment to simulate the structural strength of the device in a high-temperature environment. The above design makes the test of the device more comprehensive and fully improves the accuracy of the test. The inverter 17 is provided to adjust the power of the heating panel 12, the heat dissipation plate 19 is provided to enable the heat generated by the inverter 17 to be dissipated in time, and the protective cover 10 is provided to protect the surrounding staff during the experiment, and the protective cover 10 forms a semi-sealed space that can provide heating and cooling effects.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and do not limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. Large test bench device for bridge expansion joints, comprising a base (1), a test tank (2), a first hydraulic cylinder (3), a first telescopic column (4), a pushing plate (5), a second hydraulic cylinder (6), a third hydraulic cylinder (7), a fixing plate (8), a controller (9), a protective cover (10), a fixing frame (11), a heating panel (12), a liquid nitrogen storage tank (13), a filling port (14), a sprinkler (15), a nozzle (16), an inverter (17), a test room (18) and a heat dissipation plate (19), characterized in that: The test tank (2) is provided at the top of the base (1). The first hydraulic cylinder (3) is fixedly arranged inside the test tank (2). The first telescopic column (4) is fixedly arranged at one end of the first hydraulic cylinder (3). The pushing plate (5) is fixedly arranged at one end of the first telescopic column (4). The second hydraulic cylinders (6) are fixedly arranged on both sides inside the test tank (2).

2. The large-scale test bench device for bridge expansion joints according to claim 1, characterized in that: The third hydraulic cylinder (7) is fixedly arranged at one end of the base (1). The fixing plate (8) is fixedly arranged at one end of the third hydraulic cylinder (7).

3. The large test bench device for bridge expansion joints according to claim 2, wherein: The controller (9) is fixedly arranged on one side of the test tank (2). The protective cover (10) is fixedly arranged on the top of the test tank (2).

4. The large-scale test bench device for bridge expansion joints according to claim 3, characterized in that: The fixing frame (11) is fixedly arranged on both sides of the protective cover (10). The heating panel (12) is fixedly arranged inside the fixing frame (11).

5. The large-scale test bench device for bridge expansion joints according to claim 4, characterized in that: The liquid nitrogen storage tank (13) is fixedly arranged on the top of the protective cover (10). The filling port (14) is fixedly arranged on the top of the liquid nitrogen storage tank (13).

6. The large-scale test bench device for bridge expansion joints according to claim 5, characterized in that: The sprayer (15) is fixedly arranged at the bottom of the liquid nitrogen storage tank (13). The nozzle (16) is fixedly arranged at the bottom of the sprayer (15).

7. The large-scale test bench device for bridge expansion joints according to claim 6, characterized in that: The inverter (17) is fixedly arranged on one side of the protective cover (10). The test room (18) is provided inside the protective cover (10). The heat dissipation plate (19) is fixedly arranged on one side of the inverter (17).

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