Compression resistance tester for municipal roads and bridges

Abstract

The utility model discloses a compressive tester for municipal roads and bridges, and relates to the technical field of pavement detection, the compressive tester comprises a support assembly and a bottom plate, the bottom plate is slidably arranged on the support assembly, the middle of the bottom plate is fixedly provided with a lifting hole, the top of the bottom plate is fixedly provided with two symmetrically distributed stand columns, and the two stand columns are fixedly arranged on the bottom plate. And movable grooves are fixedly formed in the stand columns, movable rods are arranged in the movable grooves in a sliding mode, and a lifting plate is fixedly arranged between the two movable rods. When the rebound apparatus is not perpendicular to the road surface, the four threaded rods are rotated and adjusted, so that the distances between the four pressing plates and the rebound apparatus are adjusted, the rebound apparatus can be rotated and adjusted below the lifting plate, the rebound apparatus is ensured to be perpendicular to the road surface, and the problem that in the using process of an existing compressive tester for municipal roads and bridges, the rebound apparatus is not perpendicular to the road surface is solved. And when the road surface is hollow and inclined, the rebound apparatus cannot be ensured to be vertical to the road surface, so that the detection accuracy is reduced.

Description

Technical Field

[0001] This utility model relates to the field of road surface testing technology, and in particular to a compressive strength tester for municipal roads and bridges. Background Technology

[0002] The rebound method is commonly used to test the compressive strength of concrete in municipal roads and bridges. However, current technology requires manually marking a grid and manually testing each area within the grid using a handheld rebound hammer.

[0003] The existing patent publication number is CN220729869U, which discloses a test device for the compressive strength of concrete for roads and bridges. The rebound hammer of this utility model can test the area at equal intervals, which solves the problem that manual measurement requires manually drawing a grid and manually holding the rebound hammer to test the area within the grid one by one, which is time-consuming, labor-intensive and inefficient.

[0004] However, during use, the compression tester for municipal roads and bridges disclosed in the above patent cannot guarantee that the rebound hammer is perpendicular to the road surface when there are potholes or inclinations, which reduces the accuracy of the test. Therefore, we propose a compression tester for municipal roads and bridges to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this utility model, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] Therefore, the purpose of this utility model is to provide a compression tester for municipal roads and bridges, which can solve the problem that existing compression testers for municipal roads and bridges cannot guarantee that the rebound hammer is perpendicular to the road surface when the road surface has potholes or is tilted, thus reducing the accuracy of the test.

[0007] To solve the above-mentioned technical problems, this utility model provides a compressive strength tester for municipal road bridges, adopting the following technical solution: It includes a support assembly and a base plate. The base plate is slidably mounted on the support assembly. A lifting hole is fixedly opened in the middle of the base plate. Two symmetrically distributed columns are fixedly mounted on the top of the base plate. A movable groove is fixedly opened inside the column. A movable rod is slidably mounted inside the movable groove. A lifting plate is fixedly mounted between the two movable rods. Four evenly distributed extension rods are fixedly mounted on the bottom of the lifting plate. An adjusting ring is fixedly mounted on the bottom of the extension rod. A rebound hammer is movably fitted inside the adjusting ring. A universal joint is fixedly mounted on the top of the rebound hammer. The upper end of the universal joint is movably connected to the lifting plate. Four evenly distributed threaded cylinders are fixedly mounted inside the adjusting ring. A threaded rod is threadedly connected inside the threaded cylinder. A pressure plate is fixedly mounted on the end of the threaded rod near the rebound hammer. The pressure plate and the rebound hammer are movably fitted together.

[0008] The base plate is equipped with a power component that drives the lifting plate to move up and down.

[0009] Preferably, the power assembly includes a support rod, which is fixedly mounted on the top of the base plate. A motor is fixedly mounted on one side of the support rod, and a rotating shaft is rotatably mounted on the other side of the support rod. The rotating shaft is fixedly connected to the drive end of the motor, and a cam is fixedly mounted on the outer ring of the rotating shaft. The cam is movably engaged with the upper surface of the lifting plate.

[0010] Preferably, the power assembly further includes a sleeve rod, which is fixedly disposed at the bottom of the movable groove. A slide rod is slidably disposed inside the sleeve rod, and the upper end of the slide rod is fixedly connected to the movable rod. A spring is fixedly connected between the movable rod and the bottom of the movable groove, and the spring is movably sleeved on the outer ring of the sleeve rod and the slide rod.

[0011] Preferably, the support assembly includes two symmetrically arranged guide rails, each with a connecting plate slidably disposed inside. One of the guide rails has an electric push rod fixedly disposed inside, with its telescopic end fixedly connected to the corresponding connecting plate. The other guide rail has a guide rod fixedly disposed inside, with its telescopic end slidably connected to the corresponding connecting plate. Two guide rails are fixedly disposed between the two connecting plates. The base plate is slidably disposed between the two guide rails, with one of the guide rails having an electric push rod fixedly disposed inside, its telescopic end fixedly connected to the base plate.

[0012] Preferably, both ends of the guide rail are rotatably equipped with pulleys via L-shaped frames, and a fixing plate is fixedly installed between the two L-shaped frames on one of the guide rails, with a pusher fixedly installed on the top of the fixing plate.

[0013] Preferably, a power supply device is fixedly installed on the top of the fixed plate, a controller is installed on the pusher, and the rebounder and motor are electrically connected to the controller.

[0014] Preferably, in the initial state, the tops of the movable rod and the movable groove are in contact with each other, and the height of the bottom of the rebound device is higher than the height of the top of the base plate.

[0015] In summary, this utility model has at least one of the following beneficial effects:

[0016] 1. When the rebound hammer is not perpendicular to the road surface, rotate and adjust the four threaded rods to adjust the distance between the four pressure plates and the rebound hammer, so that the rebound hammer can be rotated and adjusted below the lifting plate, thereby ensuring that the rebound hammer is perpendicular to the road surface. This solves the problem that existing municipal road and bridge compressive strength testers cannot guarantee that the rebound hammer is perpendicular to the road surface when the road surface has potholes or inclinations, thus reducing the accuracy of the test.

[0017] 2. With the installation of the power component, it is no longer necessary to manually hold the rebound hammer to test the test area, thus solving the problem that the existing technology of testing the compressive strength of concrete by manually holding the rebound hammer to test the test area is time-consuming and labor-intensive.

[0018] 3. By installing the support components, the base plate can move freely on the grid, which allows the rebound hammer to test the compressive strength of concrete at different locations on the grid, thus improving the practicality of the device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a first-view three-dimensional structural diagram of a compressive strength tester for municipal roads and bridges according to the present invention;

[0021] Figure 2 This is a second-view three-dimensional structural diagram of a compression testing instrument for municipal roads and bridges according to the present invention;

[0022] Figure 3 This is a schematic diagram of the support components and base plate structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the power component structure of this utility model;

[0024] Figure 5 This is a schematic diagram showing the disassembled structure of the lifting plate and rebound device of this utility model.

[0025] Explanation of reference numerals in the attached diagram: 1. Base plate; 2. Column; 3. Movable rod; 4. Lifting plate; 5. Extension rod; 6. Adjusting ring; 7. Rebound spring; 8. Universal joint; 9. Threaded cylinder; 10. Threaded rod; 11. Pressure plate; 12. Sleeve rod; 13. Slide rod; 14. Spring; 15. Support rod; 16. Motor; 17. Cam; 18. Guide rail one; 19. Connecting plate; 20. Electric push rod one; 21. Guide rod; 22. Guide rail two; 23. Electric push rod two; 24. Pulley; 25. Fixed plate; 26. Push handle; 27. Controller; 28. Power supply device. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 This utility model provides an embodiment of a compression tester for municipal roads and bridges, comprising a support assembly and a base plate 1. The base plate 1 is slidably mounted on the support assembly. A lifting hole is fixedly opened in the middle of the base plate 1. Two symmetrically distributed columns 2 are fixedly mounted on the top of the base plate 1. Movable grooves are fixedly opened inside the columns 2. Movable rods 3 are slidably mounted inside the movable grooves. A lifting plate 4 is fixedly mounted between the two movable rods 3. Four evenly distributed extension rods 5 are fixedly mounted at the bottom of the lifting plate 4. An adjusting ring 6 is fixedly mounted at the bottom of the extension rods 5. A rebound spring 7 is movably fitted inside the adjusting ring 6. A universal joint 8 is fixedly mounted on the top of the rebound spring 7. The upper end of the universal joint 8 is movably connected to the lifting plate 4. Four evenly distributed threaded cylinders 9 are fixedly mounted inside the adjusting ring 6. Threaded rods 10 are threadedly connected inside the threaded cylinders 9. A pressure plate 11 is fixedly mounted at the end of the threaded rod 10 near the rebound spring 7. The pressure plate 11 and the rebound spring 7 are movably fitted together. A power assembly for driving the lifting plate 4 to rise and fall is provided on the base plate 1.

[0028] Furthermore, the power assembly includes a support rod 15, which is fixedly mounted on the top of the base plate 1. A motor 16 is fixedly mounted on the side of the support rod 15, and a rotating shaft is rotatably mounted on the other side of the support rod 15. The rotating shaft is fixedly connected to the drive end of the motor 16. A cam 17 is fixedly mounted on the outer ring of the rotating shaft. The cam 17 is movably fitted against the upper surface of the lifting plate 4. The power assembly also includes a sleeve rod 12, which is fixedly mounted at the bottom of the movable groove. A slide rod 13 is slidably mounted inside the sleeve rod 12. The upper end of the slide rod 13 is fixedly connected to the movable rod 3. A spring 14 is fixedly connected between the movable rod 3 and the bottom of the movable groove. The spring 14 is movably mounted on the outer ring of the sleeve rod 12 and the slide rod 13.

[0029] In the initial state of using this invention, the tops of the movable rod 3 and the movable groove are in contact with each other, and the bottom of the rebound hammer 7 is higher than the top of the base plate 1. After the device is moved to the detection position, the motor 16 is started, which drives the rotating shaft and the cam 17 to rotate synchronously. This causes the lifting plate 4, the extension rod 5, the adjusting ring 6, the rebound hammer 7, and the universal joint 8 to move downward synchronously, so that the rebound hammer 7 passes through the lifting hole and performs compressive strength testing on the road and bridge concrete. As the cam 17 continues to rotate, the spring 14 returns to its elasticity, causing the movable rod 3, the sliding rod 13, and the lifting plate 4 to move upward synchronously, thereby causing the rebound hammer 7 to reset and wait for the next test. This eliminates the need for manual hand-held rebound hammer 7 to test the detection area, solving the problem that the existing technology requires manual hand-held rebound hammer 7 to test the detection area when using the rebound method to test the compressive strength of concrete, which is time-consuming and laborious.

[0030] Considering that when the road surface has potholes or slopes, the rebound hammer 7 cannot be guaranteed to be perpendicular to the road surface, thus reducing the accuracy of the test, the position of the rebound hammer 7 is adjusted by setting four threaded rods 10. Specifically, when the rebound hammer 7 is not perpendicular to the road surface, the four threaded rods 10 are rotated and adjusted, thereby adjusting the distance between the four pressure plates 11 and the rebound hammer 7, so that the rebound hammer 7 can be rotated and adjusted below the lifting plate 4, thus ensuring that the rebound hammer 7 is perpendicular to the road surface. This solves the problem that existing municipal road and bridge compressive strength testers cannot guarantee that the rebound hammer 7 is perpendicular to the road surface when the road surface has potholes or slopes, thus reducing the accuracy of the test.

[0031] Furthermore, the support assembly includes two symmetrically arranged guide rails 18. A connecting plate 19 is slidably arranged inside the guide rails 18. An electric push rod 20 is fixedly arranged inside one of the guide rails 18. The telescopic end of the electric push rod 20 is fixedly connected to the corresponding connecting plate 19. A guide rod 21 is fixedly arranged inside the other guide rail 18. The guide rod 21 is slidably connected to the corresponding connecting plate 19. Two guide rails 22 are fixedly arranged between the two connecting plates 19. The base plate 1 is slidably arranged between the two guide rails 22. An electric push rod 23 is fixedly arranged inside one of the guide rails 22. The telescopic end of the electric push rod 23 is fixedly connected to the base plate 1.

[0032] The operator marks a grid within the testing area. By setting up electric push rod 1 20 and electric push rod 23, the base plate 1 can move freely on the marked grid, thereby enabling the rebound hammer 7 to test the compressive strength of concrete at different locations on the marked grid, thus improving the practicality of the device.

[0033] Furthermore, both ends of the guide rail 18 are equipped with pulleys 24 that rotate through L-shaped frames. A fixing plate 25 is fixedly installed between the two L-shaped frames on one of the guide rails 18. A pusher 26 is fixedly installed on the top of the fixing plate 25. With this configuration, pushing the pusher 26 can move the device to the designated detection area.

[0034] Furthermore, a power supply device 28 is fixedly installed on the top of the fixed plate 25, and a controller 27 is installed on the pusher 26. The rebound device 7 and the motor 16 are electrically connected to the controller 27. The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0035] Working principle: Pushing the pusher 26 moves the device to the designated testing area. Starting the motor 16 drives the rotating shaft and cam 17 to rotate synchronously, which in turn drives the lifting plate 4, extension rod 5, adjusting ring 6, rebound hammer 7 and universal joint 8 to move downward synchronously. This allows the rebound hammer 7 to pass through the lifting hole and perform compressive strength testing on the road and bridge concrete. As the cam 17 continues to rotate, the spring 14 returns to its elasticity, driving the movable rod 3, sliding rod 13 and lifting plate 4 to move upward synchronously, which in turn drives the rebound hammer 7 to reset and wait for the next test. In addition, the electric push rod 1 20 and electric push rod 23 allow the base plate 1 to move freely on the marked grid, which allows the rebound hammer 7 to perform compressive strength testing on the concrete at different positions on the marked grid.

[0036] When the rebound hammer 7 is not perpendicular to the road surface, rotate and adjust the four threaded rods 10, thereby adjusting the distance between the four pressure plates 11 and the rebound hammer 7, so that the rebound hammer 7 can be rotated and adjusted below the lifting plate 4 to ensure that the rebound hammer 7 is perpendicular to the road surface, thereby ensuring the accuracy of the test results.

[0037] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A municipal road and bridge compression resistance tester comprising a support assembly and a base plate (1), characterized in that: The base plate (1) is slidably mounted on the support assembly. A lifting hole is fixedly opened in the middle of the base plate (1). Two symmetrically distributed columns (2) are fixedly mounted on the top of the base plate (1). A movable groove is fixedly opened inside the column (2). A movable rod (3) is slidably mounted inside the movable groove. A lifting plate (4) is fixedly mounted between the two movable rods (3). Four evenly distributed extension rods (5) are fixedly mounted at the bottom of the lifting plate (4). An adjustment ring is fixedly mounted at the bottom of the extension rods (5). 6) The inside of the adjusting ring (6) is fitted with a rebound spring (7). The top of the rebound spring (7) is fixedly fitted with a universal joint (8). The upper end of the universal joint (8) is movably connected to the lifting plate (4). The inside of the adjusting ring (6) is fixedly fitted with four evenly distributed threaded cylinders (9). The inside of the threaded cylinders (9) is threadedly connected with a threaded rod (10). The end of the threaded rod (10) near the rebound spring (7) is fixedly fitted with a pressure plate (11). The pressure plate (11) and the rebound spring (7) are movably fitted together. The base plate (1) is equipped with a power component that drives the lifting plate (4) to rise and fall.

2. The compression testing machine for municipal roads and bridges according to claim 1, characterized in that: The power assembly includes a support rod (15), which is fixedly mounted on the top of the base plate (1). A motor (16) is fixedly mounted on the side of the support rod (15), and a rotating shaft is rotatably mounted on the other side of the support rod (15). The rotating shaft is fixedly connected to the drive end of the motor (16), and a cam (17) is fixedly mounted on the outer ring of the rotating shaft. The cam (17) is movably fitted to the upper surface of the lifting plate (4).

3. The compression testing machine for municipal roads and bridges according to claim 2, characterized in that: The power assembly also includes a sleeve rod (12), which is fixedly installed at the bottom of the movable groove. A slide rod (13) is slidably installed inside the sleeve rod (12). The upper end of the slide rod (13) is fixedly connected to the movable rod (3). A spring (14) is fixedly connected between the movable rod (3) and the bottom of the movable groove. The spring (14) is movably sleeved on the outer ring of the sleeve rod (12) and the slide rod (13).

4. The compression testing machine for municipal roads and bridges according to claim 1, characterized in that: The support assembly includes two symmetrically arranged guide rails (18). A connecting plate (19) is slidably arranged inside the guide rails (18). An electric push rod (20) is fixedly arranged inside one of the guide rails (18). The telescopic end of the electric push rod (20) is fixedly connected to the corresponding connecting plate (19). A guide rod (21) is fixedly arranged inside the other guide rail (18). The guide rod (21) is slidably connected to the corresponding connecting plate (19). Two guide rails (22) are fixedly arranged between the two connecting plates (19). The base plate (1) is slidably arranged between the two guide rails (22). An electric push rod (23) is fixedly arranged inside one of the guide rails (22). The telescopic end of the electric push rod (23) is fixedly connected to the base plate (1).

5. The compression testing machine for municipal roads and bridges according to claim 4, characterized in that: Both ends of the guide rail (18) are provided with pulleys (24) through L-shaped frames. A fixing plate (25) is fixed between the two L-shaped frames on one of the guide rails (18), and a pusher (26) is fixed on the top of the fixing plate (25).

6. The compression testing machine for municipal roads and bridges according to claim 5, characterized in that: A power supply device (28) is fixedly installed on the top of the fixed plate (25), and a controller (27) is installed on the pusher (26). The rebounder (7) and the motor (16) are electrically connected to the controller (27).

7. The compression testing machine for municipal roads and bridges according to claim 1, characterized in that: In the initial state, the top of the movable rod (3) and the movable groove are in contact with each other, and the bottom of the rebounder (7) is higher than the top of the base plate (1).

Images