Highway bridge bearing capacity detection device

Abstract

The utility model belongs to the technical field of bridge bearing capacity detection, and particularly relates to a highway bridge bearing capacity detection device which comprises a bottom plate, a fixing plate is fixed above the rear portion of the bottom plate, a pressure applying detection assembly is installed behind the fixing plate, a height adjusting assembly is installed at the top of the fixing plate, and a transverse shaft is fixedly arranged on the inner side of the fixing plate. The outer side of the transverse shaft is slidably sleeved with a plurality of connecting blocks at equal intervals, fixed columns are fixed to the front ends of the connecting blocks, movable plates are arranged on the outer sides of the middles of the fixed columns and slidably located on the inner sides of the front ends of the fixed plates, a plurality of guide grooves are formed in the movable plates in the horizontal direction, and bearing frames are fixedly connected to the front ends of the fixed columns. According to the utility model, the baffle plate is used for conveniently clamping and positioning the bridge model, and the plurality of bearing frames can simulate a bridge pier and are arranged on the outer side of the bridge model at equal intervals, so that the detection can be more fit with the actual situation, and the detected result can be more accurate.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge bearing capacity detection, in particular to a highway bridge bearing capacity detection device. Background Art

[0002] A bridge generally refers to a structure built across rivers, lakes, and seas to enable vehicles and pedestrians to pass smoothly. When designing and constructing a highway bridge, it is also necessary to make a scaled model of the bridge and conduct various tests for verification to ensure the quality of the project. Among them, the test of the bridge's bearing capacity is crucial.

[0003] In the Chinese utility model patent with publication number CN219870662U, a highway bridge load-bearing capacity detection device is disclosed. By controlling the two support frames to be located at different heights, the test sample can be changed into an inclined state. The direction of the pressure has an angle with the sample surface, and the load-bearing capacity of the remaining states can be tested. The detection data is more comprehensive and can better reflect the actual load-bearing situation.

[0004] After searching and combining with the actual experience of bridge bearing capacity detection, it is found that the above device still has some defects and shortcomings in actual use: the above device is only equipped with two left and right support frames for supporting the bridge model, and there is a long range of suspension in the middle, but in reality the bridge is built on several bases, and the bearing capacity can be guaranteed and improved. Therefore, there will be a large deviation between the detection result of the above device and the actual result, and it is not convenient to realize the safety test of the bridge model as a whole. Therefore, it is urgent to improve the existing highway bridge bearing capacity detection device and provide a highway bridge bearing capacity detection device. Utility Model Content

[0005] The purpose of the utility model is to provide a highway bridge bearing capacity detection device with reasonable design, simple structure, convenient for stable clamping of bridge models and more accurate detection results, so as 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 highway bridge load-bearing capacity detection device comprises a base plate, a fixed plate is fixed on the upper rear portion of the base plate, a pressure detection assembly is installed behind the fixed plate, a height adjustment assembly is installed on the top of the fixed plate, a transverse axis is fixed on the inner side of the fixed plate, a plurality of connecting blocks are equidistantly slidably sleeved on the outer side of the transverse axis, a fixed column is fixed to the front end of the plurality of connecting blocks, a movable plate is provided on the outer side of the middle of the fixed column, the movable plate slides and is located on the inner side of the front end of the fixed plate, a plurality of guide grooves are provided inside the movable plate in a horizontal direction, and a bearing frame is fixedly connected to the front end of the plurality of fixed columns.

[0008] As a preferred embodiment, the pressure detection component includes a first servo motor, a threaded rod, a movable frame, an electric telescopic rod, a pressure sensor, a connecting frame and a pressure roller, the output end of the first servo motor is fixedly connected to the threaded rod, the outer thread of the threaded rod is threadedly sleeved with a movable frame with an inverted "L" shape structure, the top of the movable frame is fixedly installed with an electric telescopic rod, the telescopic end of the electric telescopic rod is fixedly connected with the pressure sensor, the bottom end of the pressure sensor is fixed with a connecting frame, and the pressure roller is installed on the inner bearing of the connecting frame.

[0009] As a preferred implementation, the first servo motor is fixedly mounted on the right rear outer wall of the fixed plate, the left end of the threaded rod is rotatably connected to the fixed plate, and the pressure roller is located directly above the carrier.

[0010] As a preferred embodiment, the longitudinal section of the support frame is in a "concave" shape and is arranged at equal intervals along the length direction of the base plate. The bottom of the support frame is equipped with bottom wheels that rotate symmetrically front and back. The bottom wheels are in contact with the upper end surface of the base plate, and baffles are fixed on the inner sides of the two ends of the leftmost and rightmost support frames that are away from each other.

[0011] As a preferred embodiment, the height adjustment assembly includes a bracket, a second servo motor, a bidirectional screw, a slider and a push rod. The two brackets are respectively welded and fixed to the top of the left and right ends of the fixed plate. The outer wall of the right bracket is fixedly installed with the second servo motor. The output end of the second servo motor is fixedly connected with a bidirectional screw. The outer sides of the left and right ends of the bidirectional screw are threaded with sliders, and the front ends of the two sliders are hinged with push rods.

[0012] As a preferred embodiment, the bottom ends of the two push rods are hinged to the movable plate, and limiting rods are fixed on the front inner sides of the left and right ends of the fixed plate, and the left and right ends of the movable plate are respectively slidably mounted on the outer sides of the two limiting rods.

[0013] As a preferred embodiment, the front end guide slides of the multiple fixed columns are located in the multiple guide grooves, and the multiple guide grooves include a vertical guide groove located in the middle and a plurality of inclined guide grooves symmetrically arranged on the left and right sides of the vertical guide groove, and the slopes of the plurality of inclined guide grooves are arranged to decrease in the direction away from the vertical guide groove.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the solution of the utility model:

[0016] The bridge model is placed on top of multiple bearing frames, and then the second servo motor is started to control the rotation of the bidirectional screw rod, and the two sliders are controlled to move synchronously and approach each other. At this time, the two push rods can be used to control the movable plate to move steadily downward along the limit rod, and the multiple guide grooves can be used to squeeze the multiple fixed columns, so that the multiple bearing frames can be synchronously retracted toward the middle position. At the same time, the baffle is used to facilitate the clamping and positioning of the bridge model. At the same time, multiple bearing frames can simulate bridge piers and are arranged at equal intervals on the outside of the bridge model, so that the detection can be more in line with the actual situation, and the measured results can also be more accurate;

[0017] The pressure sensor, the connecting frame and the pressure roller are controlled to move vertically downward by the electric telescopic rod, so that the pressure roller contacts and applies pressure to the upper surface of the bridge model. The pressure sensor facilitates the real-time acquisition of pressure values, which facilitates the testing of the load-bearing capacity of the bridge. During the test, the pressure of the pressure roller on the bridge model can be adjusted to the maximum load-bearing weight designed for the bridge. The first servo motor is then started to control the rotation of the threaded rod, and the movable frame is controlled to drive the electric telescopic rod and the pressure roller to move horizontally along the bridge model to observe the status of the bridge. The safety of the entire bridge under the premise of maximum load-bearing can be tested, and the test is more detailed. 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 three-dimensional rear view structure of the utility model;

[0021] Figure 3 It is a front view structural diagram of the horizontal axis and the connecting block of the utility model;

[0022] Figure 4 This is a schematic diagram of the overall front view structure of the height adjustment component of the utility model;

[0023] Figure 5 It is a schematic diagram of the left-side sectional structure of the utility model.

[0024] In the figure:

[0025] 1. Bottom plate; 2. Fixed plate; 3. Pressure detection assembly; 31. First servo motor; 32. Threaded rod; 33. Movable frame; 34. Electric telescopic rod; 35. Pressure sensor; 36. Connecting frame; 37. Pressing roller; 4. Height adjustment assembly; 41. Bracket; 42. Second servo motor; 43. Bidirectional screw rod; 44. Sliding block; 45. Push rod; 5. Horizontal axis; 6. Connecting block; 7. Fixed column; 8. Limiting rod; 9. Movable plate; 10. Guide groove; 11. Carrying frame; 12. Bottom wheel; 13. Baffle. DETAILED DESCRIPTION

[0026] The embodiments described below are only some of the embodiments of the present invention and do not represent all the embodiments consistent with the present invention. Now, in conjunction with the accompanying drawings, the exemplary embodiments are described as follows:

[0027] like Figure 1-5 As shown, the utility model highway bridge bearing capacity detection device includes a base plate 1, which is characterized in that: a fixed plate 2 is fixed to the upper rear of the base plate 1, a pressure detection component 3 is installed at the rear of the fixed plate 2, a height adjustment component 4 is installed on the top of the fixed plate 2, a horizontal axis 5 is fixed on the inner side of the fixed plate 2, a plurality of connecting blocks 6 are equidistantly slidably sleeved on the outer side of the horizontal axis 5, a plurality of connecting blocks 6 are fixed to the front ends of the plurality of connecting blocks 6, a movable plate 9 is provided on the outer side of the middle of the fixed column 7, the movable plate 9 is slidably located on the inner side of the front end of the fixed plate 2, a plurality of guide grooves 10 are opened in the interior of the movable plate 9 along the horizontal direction, and a bearing frame 11 is fixedly connected to the front ends of the plurality of fixed columns 7.

[0028] On the basis of the above structure, the pressure detection component 3 includes a first servo motor 31, a threaded rod 32, a movable frame 33, an electric telescopic rod 34, a pressure sensor 35, a connecting frame 36 and a pressure roller 37. The output end of the first servo motor 31 is fixedly connected to the threaded rod 32, the outer thread of the threaded rod 32 is threadedly sleeved with the movable frame 33 with an inverted "L" shape structure, the top of the movable frame 33 is fixedly installed with the electric telescopic rod 34, the telescopic end of the electric telescopic rod 34 is fixedly connected with the pressure sensor 35, the bottom end of the pressure sensor 35 is fixed with the connecting frame 36, and the inner bearing of the connecting frame 36 is installed with the pressure roller 37.

[0029] In this embodiment, the pressure sensor 35, the connecting frame 36 and the pressure roller 37 are controlled to move vertically downward by the electric telescopic rod 34, so that the pressure roller 37 contacts and applies pressure to the upper surface of the bridge model. The pressure sensor 35 is used to obtain the pressure value in real time, which facilitates the testing of the load-bearing capacity of the bridge.

[0030] On the basis of the above structure, the first servo motor 31 is fixedly mounted on the right rear outer wall of the fixed plate 2 , the left end of the threaded rod 32 is rotatably connected to the fixed plate 2 , and the pressure roller 37 is located directly above the carrier 11 .

[0031] In this embodiment, by adjusting the pressure of the pressure roller 37 on the bridge model to the maximum load-bearing weight designed for the bridge, and then starting the first servo motor 31 to drive the threaded rod 32, the movable frame 33 can be controlled to drive the electric telescopic rod 34 and the pressure roller 37 to move horizontally along the bridge model, the safety of the entire bridge under the premise of maximum load-bearing can be tested, which facilitates more detailed safety tests.

[0032] On the basis of the above structure, the longitudinal section of the supporting frame 11 is in the shape of a "concave" character and is arranged at equal intervals along the length direction of the base plate 1. The bottom of the supporting frame 11 is symmetrically rotated front and back with bottom wheels 12 installed. The bottom wheels 12 are in contact with the upper end surface of the base plate 1, and baffles 13 are fixed on the inner sides of the opposite ends of the leftmost and rightmost supporting frames 11.

[0033] In this embodiment, the bottom wheels 12 are used to facilitate the stable and smooth movement of the carrier 11, and the two baffles 13 are used to facilitate the clamping and positioning of the bridge model, thereby facilitating testing.

[0034] On the basis of the above structure, the height adjustment component 4 includes a bracket 41, a second servo motor 42, a bidirectional screw rod 43, a slider 44 and a push rod 45. The two brackets 41 are respectively welded and fixed to the top of the left and right ends of the fixed plate 2. The outer wall of the right bracket 41 is fixedly installed with the second servo motor 42. The output end of the second servo motor 42 is fixedly connected with the bidirectional screw rod 43. The outer sides of the left and right ends of the bidirectional screw rod 43 are both threadedly sleeved with sliders 44, and the front ends of the two sliders 44 are hinged with push rods 45.

[0035] On the basis of the above structure, the bottom ends of the two push rods 45 are hinged to the movable plate 9, and the limit rods 8 are fixed to the front inner sides of the left and right ends of the fixed plate 2, and the left and right ends of the movable plate 9 are slidably sleeved on the outer sides of the two limit rods 8 respectively.

[0036] In this embodiment, the rotation of the bidirectional screw rod 43 is controlled by the second servo motor 42, and the two sliders 44 can be controlled to move synchronously and approach each other, so that the two push rods 45 can be used to control the movable plate 9 to move steadily downward along the limit rod 8, and the multiple guide grooves 10 opened inside the movable plate 9 can be used to squeeze the multiple fixed columns 7, so that the multiple bearing frames 11 can be synchronously retracted toward the middle position to clamp the bridge model. At the same time, the multiple bearing frames 11 can simulate the bridge piers and are arranged at equal intervals on the outside of the bridge model, so that the detection can be more in line with the actual situation and the measured results can be more accurate.

[0037] On the basis of the above structure, the front end guide slides of the multiple fixed columns 7 are located in the multiple guide grooves 10, and the multiple guide grooves 10 include a vertical guide groove 10 located in the middle and a plurality of inclined guide grooves 10 symmetrically arranged on the left and right sides of the vertical guide groove 10, and the slopes of the plurality of inclined guide grooves 10 are arranged to decrease in the direction away from the vertical guide groove 10.

[0038] In this embodiment, a plurality of guide grooves 10 are used to conveniently control a plurality of fixing columns 7 to drive a plurality of carrier frames 11 to be equidistantly expanded or retracted, thereby facilitating adjustment.

[0039] The working principle of the utility model is as follows:

[0040] When in use, first place the bridge model to be tested on the inner side of the top of multiple bearing frames 11, then start the second servo motor 42, control the two-way screw rod 43 to rotate and control the two sliders 44 to slide synchronously and approach each other, at this time, the two push rods 45 can push the movable plate 9 to move vertically downward along the limit rod 8, and use the multiple guide grooves 10 opened inside the movable plate 9 to squeeze the fixed column 7, so that it drives the connecting block 6 and the bearing frame 11 to move synchronously and stably horizontally along the horizontal axis 5, so that the multiple bearing frames 11 can be synchronously retracted toward the middle position of the device, and the left and right baffles 13 are used to facilitate the clamping and positioning of the bridge model, and the multiple bearing frames 11 can be simulated as bridge piers and arranged at equal intervals on the outside of the bridge model to provide support for the bridge model, so that the detection can be more in line with the actual situation, and the measured results can also be more accurate;

[0041] During the inspection, the electric telescopic rod 34 is started to control the pressure sensor 35, the connecting frame 36 and the pressure roller 37 to move vertically downward, so that the pressure roller 37 contacts and applies pressure to the upper surface of the bridge model. The pressure sensor 35 is used to obtain the pressure value in real time, so as to test the load-bearing capacity of the bridge. The pressure of the pressure roller 37 on the bridge model can also be adjusted to the maximum load-bearing weight designed for the bridge. Then, the first servo motor 31 is started to control the rotation of the threaded rod 32, so that the movable frame 33 drives the electric telescopic rod 34 and the pressure roller 37 to move horizontally along the bridge model, and the status of the bridge is observed. The safety of the entire bridge under the premise of maximum load can be tested, which is convenient for more detailed safety tests.

Claims

1. A highway bridge bearing capacity detection device, comprising a base plate (1), characterized in that: A fixed plate (2) is fixed on the upper rear side of the base plate (1), a pressure detection assembly (3) is installed on the rear side of the fixed plate (2), a height adjustment assembly (4) is installed on the top of the fixed plate (2), a transverse axis (5) is fixed on the inner side of the fixed plate (2), a plurality of connecting blocks (6) are equidistantly slidably sleeved on the outer side of the transverse axis (5), a fixed column (7) is fixed to the front end of the plurality of connecting blocks (6), a movable plate (9) is provided on the outer side of the middle part of the fixed column (7), the movable plate (9) is slidably located on the inner side of the front end of the fixed plate (2), a plurality of guide grooves (10) are provided in the interior of the movable plate (9) along the horizontal direction, and a plurality of the front ends of the plurality of fixed columns (7) are fixedly connected to a carrier frame (11).

2. A highway bridge bearing capacity detection device according to claim 1, characterized in that: The pressure detection assembly (3) comprises a first servo motor (31), a threaded rod (32), a movable frame (33), an electric telescopic rod (34), a pressure sensor (35), a connecting frame (36) and a pressure roller (37); the output end of the first servo motor (31) is fixedly connected to the threaded rod (32); the outer thread of the threaded rod (32) is sleeved with an inverted "L"-shaped movable frame (33); the top of the movable frame (33) is fixedly mounted with the electric telescopic rod (34); the telescopic end of the electric telescopic rod (34) is fixedly connected to the pressure sensor (35); the bottom end of the pressure sensor (35) is fixedly mounted with the connecting frame (36); and the pressure roller (37) is mounted on the inner bearing of the connecting frame (36).

3. A highway bridge load-bearing capacity detection device according to claim 2, characterized in that: The first servo motor (31) is fixedly mounted on the right rear outer wall of the fixed plate (2), the left end of the threaded rod (32) is rotatably connected to the fixed plate (2), and the pressure roller (37) is located directly above the carrier frame (11).

4. A highway bridge load-bearing capacity detection device according to claim 3, characterized in that: The longitudinal section of the carrier (11) is in the shape of a Chinese character "concave" and is arranged at equal intervals along the length direction of the bottom plate (1). A bottom wheel (12) is installed at the bottom of the carrier (11) to rotate symmetrically in the front and rear directions. The bottom wheel (12) is in contact with and fits against the upper end surface of the bottom plate (1). A baffle (13) is fixed to the inner side of the ends of the leftmost and rightmost carriers (11) that are separated from each other.

5. A highway bridge bearing capacity detection device according to claim 1, characterized in that: The height adjustment assembly (4) comprises a bracket (41), a second servo motor (42), a bidirectional screw rod (43), a slider (44) and a push rod (45); the two brackets (41) are respectively welded and fixed to the top of the left and right ends of the fixed plate (2); the second servo motor (42) is fixedly mounted on the outer wall of the right bracket (41); the output end of the second servo motor (42) is fixedly connected to the bidirectional screw rod (43); the outer sides of the left and right ends of the bidirectional screw rod (43) are both threadedly sleeved with sliders (44); and the front ends of the two sliders (44) are both hinged with push rods (45).

6. A highway bridge load-bearing capacity detection device according to claim 5, characterized in that: The bottom ends of the two push rods (45) are hinged to the movable plate (9), and the inner front sides of the left and right ends of the fixed plate (2) are fixed with limit rods (8), and the left and right ends of the movable plate (9) are respectively slidably sleeved on the outer sides of the two limit rods (8).

7. A highway bridge load-bearing capacity detection device according to claim 1, characterized in that: The front end guide slides of the plurality of fixed columns (7) are located in the plurality of guide grooves (10), and the plurality of guide grooves (10) include a vertical guide groove (10) located in the middle and a plurality of inclined guide grooves (10) symmetrically arranged on the left and right sides of the vertical guide groove (10), and the slopes of the plurality of inclined guide grooves (10) are arranged to decrease in a direction away from the vertical guide groove (10).

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