Bridge bearing capacity measuring device

Abstract

The utility model belongs to the technical field of bridge testing, and particularly relates to a bridge bearing capacity measuring device which comprises a first cover body, the outer side of the first cover body is sequentially sleeved with a second cover body and a third cover body in a sliding mode, and opening and closing control assemblies are installed on the front side and the rear side of the bottom of the second cover body. A worm is mounted on the outer wall of the left side of the bottom of the second cover body through a bearing, a detection table is fixedly connected to the inner side of the top of the first cover body, a bridge model is mounted in the middle above the detection table, a mounting frame is fixedly arranged above the outer edge of the detection table, and a servo motor is fixedly mounted on the left side wall of the top of the mounting frame; a long screw rod is mounted on a bearing on the inner side of the top of the mounting frame, and the left end of the long screw rod is fixedly connected with the output end of the servo motor. The whole test process can be carried out in a relatively closed environment, the condition that a model material splashes when a bridge model is broken can be avoided, and the test device has an isolation protection function, can prevent injury and is higher in test safety.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge testing, in particular to a bridge load-bearing capacity measuring device. Background Art

[0002] Bridges generally refer to structures built on rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. At the beginning of bridge construction, it is necessary to analyze the bridge, and the bridge construction is often simulated by building a bridge model. By testing the bearing capacity of the bridge design model, reference data for the actual bearing capacity of the bridge can be provided, thereby facilitating the improvement of the bridge design. During the testing process, a load-bearing capacity measuring device is required.

[0003] In the Chinese utility model patent with publication number CN219532744U, a load-bearing capacity detection device for bridge design is provided. A detection mechanism is provided on a rectangular plate, and the position of the bridge design model is limited and fixed by using a fixed position limit plate 1 and a fixed position limit plate 2, and the electric push rod is started, and then the connecting plate is limited by using a telescopic rod deflected to an appropriate angle, so that the connecting block and the pressure sensor are limited along the moving direction of the telescopic rod, and the moving connecting block is pressed and contacted with the bridge design model, and then the pressure sensor is used to detect the pressure caused by the connecting block on the bridge design model, and then the bearing capacity of the bridge design model is detected, and the measured bearing capacity of the bridge design model can provide reference data for the real bearing capacity of the bridge;

[0004] After searching and combining the actual experience of bridge construction, design and testing, the above-mentioned bridge load-bearing capacity detection device still has some defects and shortcomings: the above-mentioned device lacks a protective function, when the pressure exceeds the limit of the bridge model, the bridge model will break and the model material will splash, which is easy to cause injuries, and it is not convenient to test the load-bearing capacity of various parts of the bridge more smoothly. Therefore, it is urgent to improve the existing bridge load-bearing capacity determination device and provide a bridge load-bearing capacity determination device with a protective function. Utility Model Content

[0005] The purpose of the utility model is to provide a bridge load-bearing capacity measuring device with reasonable design, simple structure, anti-splash and protection functions, and smoother testing, in order to solve the problems existing in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A device for measuring the bearing capacity of a bridge, which comprises a first cover body. A second cover body and a third cover body are sequentially sleeved on the outside of the first cover body in a sliding manner. Opening and closing control components are installed on both the front and rear sides of the bottom of the second cover body. A worm is installed on the left outer wall of the bottom of the second cover body through a bearing. The inner side of the top of the first cover body is fixedly connected with a detection table. A bridge model is installed in the middle above the detection table. An installation frame is fixedly arranged above the outer edge of the detection table. A servo motor is fixedly installed on the left side wall of the top of the installation frame. A long lead screw is installed on the inner side of the top of the installation frame through a bearing. The left end of the long lead screw is fixedly connected with the output end of the servo motor. A measurement component is installed on the outside of the long lead screw.

[0008] As a preferred embodiment, the two groups of opening and closing control components are symmetrically arranged front and rear with respect to the second cover body, and the two groups of opening and closing control components form a linkage mechanism through the worm.

[0009] As a preferred embodiment, the opening and closing control component includes a bidirectional lead screw, a worm gear, a movable block, a first support rod and a second support rod. The bidirectional lead screw is installed on the outer wall of the second cover body through a bearing. The left end of the bidirectional lead screw is fixedly connected with the worm gear. Movable blocks are threadedly sleeved on the outer sides of the left and right ends of the bidirectional lead screw where the threads are opposite. The front of the bottom of the movable block is rotatably connected with a first support rod, and the front of the top of the movable block is rotatably connected with a second support rod.

[0010] As a preferred embodiment, the worm gear meshes with the worm. The first support rod and the second support rod are equal in length and are symmetrically arranged up and down with respect to the movable block. The end of the first support rod away from the movable block is rotatably connected with the first cover body, and the end of the second support rod away from the movable block is rotatably connected with the third cover body.

[0011] As a preferred embodiment, the length and width of the third cover body are equal to the length and width of the top of the installation frame, and both the second cover body and the third cover body are made of transparent reinforced plexiglass.

[0012] As a preferred embodiment, the measurement component includes a movable plate, an electric push rod, a pressure sensor, an installation frame and a pressure roller. The movable plate is threadedly sleeved on the outside of the long lead screw. Electric push rods are fixedly installed at the bottoms of both ends of the movable plate. The bottom end of the electric push rod is fixedly connected with a pressure sensor. The pressure sensor is fixedly connected with an installation frame below. A pressure roller is installed on the inner side of the bottom of the installation frame through a bearing.

[0013] As a preferred embodiment, the top end of the movable plate is in sliding fit with the bottom end face of the top of the installation frame.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] In the solution of the present utility model:

[0016] Before the test, the worm can be rotated manually, and the two worm wheels can drive the two bidirectional lead screws in the front and rear to rotate synchronously in the same direction, so that the two movable blocks can be controlled to move synchronously in the direction of approaching each other. At this time, the rotation of the first support rod and the second support rod can be used to push the second cover body and the third cover body to rise and unfold synchronously, so that the third cover body can be in contact with the top of the mounting frame, so that the entire test process can be carried out in a relatively closed environment, which can avoid the splashing of model materials when the bridge model is broken. The test device has the function of isolation protection, which can prevent injuries and has higher test safety.

[0017] The installation frame is controlled to move vertically downward by two electric push rods until the pressure roller contacts the top surface of the bridge model. The pressure sensor is used to monitor the pressure value applied to the bridge model, thereby facilitating the measurement of the bridge's load-bearing capacity. The servo motor is then started to control the rotation of the long lead screw, which can drive the measuring component to move horizontally. At this time, the pressure roller can move while applying pressure to the bridge model, making it convenient to detect various parts of the bridge and simulating the effect of vehicle driving. The measured data is more accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions, and the following description is made with respect to the drawings:

[0019] Figure 1 This is a three-dimensional front view structural diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0021] Figure 3 It is a front view cross-sectional structural schematic diagram of the first cover body and the second cover body of the utility model;

[0022] Figure 4 This is a schematic diagram of the three-dimensional left-side structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the overall front view structure of the opening and closing control component of the utility model;

[0024] Figure 6 It is a schematic diagram of the overall right view structure of the measuring component of the utility model.

[0025] In the figure:

[0026] 1. First cover body; 2. Second cover body; 3. Third cover body; 4. Opening and closing control component; 41. Bidirectional lead screw; 42. Worm gear; 43. Movable block; 44. First support rod; 45. Second support rod; 5. Worm; 6. Detection table; 7. Bridge model; 8. Mounting frame; 9. Measuring component; 91. Movable plate; 92. Electric push rod; 93. Pressure sensor; 94. Mounting frame; 95. Pressing roller; 10. Servo motor; 11. Long lead screw. Detailed implementation mode

[0027] The following described embodiments are only a part of the embodiments of the present utility model, and do not represent all embodiments consistent with the present utility model. Now, in combination with the drawings, the exemplary embodiments are described as follows:

[0028] As Figure 1-6 shown, the device for measuring the bearing capacity of the bridge of the present utility model includes a first cover body 1. A second cover body 2 and a third cover body 3 are sequentially sleeved on the outside of the first cover body 1 in a sliding manner. Both the front and rear sides of the bottom of the second cover body 2 are provided with an opening and closing control component 4. A worm 5 is installed on the left outer wall of the bottom of the second cover body 2 through a bearing. The inner side of the top of the first cover body 1 is fixedly connected with a detection table 6. A bridge model 7 is installed in the middle above the detection table 6. An installation frame 8 is fixedly provided above the outer edge of the detection table 6. A servo motor 10 is fixedly installed on the left side wall of the top of the installation frame 8. A long lead screw 11 is installed on the inner side of the top of the installation frame 8 through a bearing. The left end of the long lead screw 11 is fixedly connected with the output end of the servo motor 10. A measuring component 9 is installed on the outside of the long lead screw 11.

[0029] On the basis of the above structure, two groups of opening and closing control components 4 are symmetrically arranged front and rear with respect to the second cover body 2, and the two groups of opening and closing control components 4 form a linkage mechanism through the worm 5.

[0030] In this embodiment, by setting the worm 5, it is convenient to control the synchronous operation of the two groups of opening and closing control components 4, so as to facilitate the control of the unfolding and retracting of the first cover body 1, the second cover body 2 and the third cover body 3.

[0031] On the basis of the above structure, the opening and closing control component 4 includes a bidirectional lead screw 41, a worm gear 42, a movable block 43, a first support rod 44 and a second support rod 45. The bidirectional lead screw 41 is installed on the outer wall of the second cover body 2 through a bearing. The left end of the bidirectional lead screw 41 is fixedly connected with the worm gear 42. Movable blocks 43 are threadedly sleeved on the outside of the left and right ends of the bidirectional lead screw 41 where the threads are opposite. The front of the bottom of the movable block 43 is rotatably connected with the first support rod 44. The front of the top of the movable block 43 is rotatably connected with the second support rod 45.

[0032] On the basis of the above structure, the worm wheel 42 is meshed with the worm 5, the first support rod 44 and the second support rod 45 are equal in length and are symmetrically arranged about the movable block 43, the end of the first support rod 44 away from the movable block 43 is rotatably connected to the first cover body 1, and the end of the second support rod 45 away from the movable block 43 is rotatably connected to the third cover body 3.

[0033] On the basis of the above structure, the length and width of the third cover body 3 are equal to the length and width of the top of the mounting frame 8, and both the second cover body 2 and the third cover body 3 are made of transparent reinforced organic glass.

[0034] In this embodiment, when the worm 5 is controlled to rotate, the worm wheel 42 can be used to drive the bidirectional lead screw 41 to rotate, so as to facilitate the control of the two movable blocks 43 to approach each other, that is, under the action of the first support rod 44 and the second support rod 45, the second cover body 2 and the third cover body 3 are pushed to rise and unfold upward synchronously, which can avoid the splashing of model material when the bridge model 7 is broken during the test, so that the test device has the function of isolation and protection.

[0035] On the basis of the above structure, the measuring component 9 includes a movable plate 91, an electric push rod 92, a pressure sensor 93, a mounting frame 94 and a pressure roller 95. The movable plate 91 is threadedly sleeved on the outer side of the filament 11. Electric push rods 92 are fixedly installed at the bottom of both ends of the movable plate 91. The bottom end of the electric push rod 92 is fixedly connected to the pressure sensor 93. The mounting frame 94 is fixedly connected below the pressure sensor 93. The pressure roller 95 is installed on the inner bearing at the bottom of the mounting frame 94.

[0036] On the basis of the above structure, the top end of the movable plate 91 is slidably fitted with the top and bottom end surfaces of the mounting frame 8 .

[0037] In this embodiment, by controlling the rotation of the long screw 11, the measuring component 9 can be driven to move horizontally. At this time, the pressure roller 95 can move while applying pressure to the bridge model 7, which is convenient for pressure detection at various locations of the bridge model 7, and can simulate the effect of vehicle driving, so that the measured data is more accurate and reliable.

[0038] The working principle of the utility model is as follows:

[0039] When in use, first fix the bridge model 7 to be tested on the top of the test platform 6 by existing means. Figure 1 As shown in , the worm 5 can then be manually rotated, and the two worm wheels 42 can be used to drive the front and rear two bidirectional screws 41 to rotate synchronously in the same direction, so that the two movable blocks 43 can be controlled to move synchronously in the direction of approaching each other. At this time, the rotation of the first support rod 44 and the second support rod 45 can be used to push the second cover body 2 and the third cover body 3 to rise and unfold synchronously, and make the third cover body 3 contact and fit with the top of the mounting frame 8. Figure 5As shown in , the entire test process can be carried out in a relatively closed environment, thereby avoiding the splashing of model materials when the bridge model 7 is crushed under pressure. The test device has the function of isolation and protection to prevent injuries, and the test is safer. Moreover, both the second cover 2 and the third cover 3 are made of transparent reinforced organic glass, which is convenient for observing the test process.

[0040] During the load-bearing capacity test of the bridge model 7, the two electric push rods 92 can be started to control the installation frame 94 to move vertically downward until the pressure roller 95 contacts the top surface of the bridge model 7. As the electric push rods 92 extend, the pressure sensor 93 can be used to monitor the pressure value applied to the bridge model 7, thereby facilitating the measurement of the load-bearing capacity of the bridge. At the same time, during the load-bearing capacity test, the servo motor 10 can be started to control the rotation of the long lead screw 11, which can drive the entire measuring component 9 to move stably in the horizontal direction. At this time, the pressure roller 95 can move while applying pressure to the bridge model 7, which is convenient for detecting various parts of the bridge and can simulate the effect of vehicle driving. The measured data is more accurate and reliable.

[0041] The above are only preferred specific embodiments of the utility model and are not intended to limit the protection scope of the utility model; any equivalent changes, modifications, substitutions and variations made by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the protection scope determined by the claims.

Claims

1. A bridge load-bearing capacity measuring device, comprising a first housing (1), characterized in that: The outer side of the first cover body (1) is slidably sleeved with a second cover body (2) and a third cover body (3) in sequence; an opening and closing control assembly (4) is installed on both the front and rear sides of the bottom of the second cover body (2); a worm (5) is installed on a bearing on the left outer wall of the bottom of the second cover body (2); a detection platform (6) is fixedly connected to the inner side of the top of the first cover body (1); a bridge model (7) is installed in the middle of the upper part of the detection platform (6); a mounting frame (8) is fixedly installed above the outer edge of the detection platform (6); a servo motor (10) is fixedly installed on the left side wall of the top of the mounting frame (8); a long lead screw (11) is installed on the inner side bearing of the top of the mounting frame (8); the left end of the long lead screw (11) is fixedly connected to the output end of the servo motor (10); and a measuring assembly (9) is installed on the outer side of the long lead screw (11).

2. A bridge load-bearing capacity measuring device according to claim 1, characterized in that: The two groups of opening and closing control components (4) are arranged front-to-back symmetrically with respect to the second cover body (2), and the two groups of opening and closing control components (4) form a linkage mechanism through a worm (5).

3. A bridge load-bearing capacity measuring device according to claim 1, characterized in that: The opening and closing control assembly (4) comprises a bidirectional screw (41), a worm wheel (42), a movable block (43), a first support rod (44) and a second support rod (45); the bearing of the bidirectional screw (41) is mounted on the outer wall of the second cover body (2); the left end of the bidirectional screw (41) is fixedly connected to the worm wheel (42); the outer sides of the left and right ends of the bidirectional screw (41) are both threadedly sleeved with movable blocks (43); the bottom front of the movable block (43) is rotatably connected to the first support rod (44); the top front of the movable block (43) is rotatably connected to the second support rod (45).

4. A bridge load-bearing capacity measuring device according to claim 3, characterized in that: The worm wheel (42) is meshed with the worm (5); the first support rod (44) and the second support rod (45) are of equal length and are symmetrically arranged with respect to the movable block (43); one end of the first support rod (44) away from the movable block (43) is rotatably connected to the first cover body (1); and one end of the second support rod (45) away from the movable block (43) is rotatably connected to the third cover body (3).

5. A bridge load-bearing capacity measuring device according to claim 4, characterized in that: The length and width of the third cover body (3) are equal to the length and width of the top of the mounting frame (8); the second cover body (2) and the third cover body (3) are both made of transparent reinforced organic glass.

6. A bridge load-bearing capacity measuring device according to claim 1, characterized in that: The measuring component (9) comprises a movable plate (91), an electric push rod (92), a pressure sensor (93), a mounting frame (94) and a pressure roller (95); the movable plate (91) is threadedly sleeved on the outer side of the long screw rod (11); the bottoms of both ends of the movable plate (91) are fixedly mounted with electric push rods (92); the bottom end of the electric push rod (92) is fixedly connected with the pressure sensor (93); the lower part of the pressure sensor (93) is fixedly connected with the mounting frame (94); and the pressure roller (95) is mounted on the inner bearing of the bottom of the mounting frame (94).

7. A bridge load-bearing capacity measuring device according to claim 6, characterized in that: The top end of the movable plate (91) is slidably fitted with the top and bottom end surfaces of the mounting frame (8).

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