A concrete strength testing device for railway construction

Abstract

This utility model relates to the field of concrete strength testing technology, and discloses a concrete strength testing device for railway construction. The device includes a housing, a first motor fixedly connected to the outer wall of the housing, a lead screw fixedly mounted at the output end of the first motor, a movable shell threadedly connected to the outer wall of the lead screw, a support rod slidably connected inside the movable shell, a movable block slidably connected to the upper surface of the movable shell, a second motor fixedly connected to the outer wall of the movable block, a rotating shaft fixedly mounted at the output end of the second motor, and a first bevel gear fixedly connected to the outer wall of the rotating shaft. In this utility model, the first motor is first started to drive the lead screw to rotate. Through the cooperation of the movable shell, support rod, movable block, second motor, rotating shaft, first bevel gear, second bevel gear, gear, rack, first hydraulic cylinder, fixed block, and rebound hammer, it achieves the testing of concrete of various sizes, and the rebound hammer improves accuracy by maintaining a constant angle during testing.

Description

Technical Field

[0001] This utility model relates to the field of concrete strength testing technology, and in particular to a concrete strength testing device for railway construction. Background Technology

[0002] Concrete, a widely used building material, is an artificial stone material made by mixing cementitious materials (such as cement), granular aggregates (such as sand and gravel), water, and, when necessary, chemical admixtures and mineral additives in appropriate proportions, followed by uniform mixing, compaction, and curing. Concrete strength testing devices for railway construction are key equipment used to assess the load-bearing capacity of concrete structures in railway engineering. Accurate testing of concrete strength is crucial for ensuring the smooth progress of railway construction and its long-term stable operation. Traditional techniques involve manually holding the rebound hammer, applying pressure to trigger an impact, and reading the pointer scale value.

[0003] Traditional techniques involve manually holding the rebound hammer, which is inconvenient for testing small or large concrete sections. Repeated testing can lead to fatigue, and manual visual inspection of the rebound hammer perpendicular to the surface can easily result in angular deviations. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a concrete strength testing device for railway construction, which aims to improve the problem of difficulty in testing concrete of different sizes and the decrease in accuracy after multiple tests.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a concrete strength testing device for railway construction, comprising a housing, a first motor fixedly connected to the outer wall of the housing, a lead screw fixedly installed at the output end of the first motor, a movable shell threadedly connected to the outer wall of the lead screw, a support rod slidably connected inside the movable shell, a movable block slidably connected to the upper surface of the movable shell, a second motor fixedly connected to the outer wall of the movable block, a rotating shaft fixedly installed at the output end of the second motor, a first bevel gear fixedly connected to the outer wall of the rotating shaft, a second bevel gear meshing with the tooth end of the first bevel gear, a gear fixedly connected to the tooth end of the second bevel gear, a rack meshing with the tooth end of the gear, a rack fixedly connected to the outer wall of the movable shell, and a testing component installed on the upper surface of the movable block.

[0006] Preferably, the detection component includes a first hydraulic cylinder, the outer wall of which is fixedly disposed on the upper surface of the moving block, a fixed block is fixedly disposed at the output end of the first hydraulic cylinder, and a rebound spring is fixedly connected inside the fixed block.

[0007] Preferably, a second hydraulic cylinder is fixedly connected to the outer wall of the housing, a sliding block is fixedly provided at the output end of the second hydraulic cylinder, the sliding block is slidably connected to the inner wall of the housing, and a rotating rod is rotatably connected to the upper surface of the sliding block.

[0008] Preferably, a clamping plate is rotatably connected to the upper surface of the rotating rod, and the outer wall of the clamping plate is slidably connected to the inner wall of the outer casing. Preferably, a scraper is slidably connected to the inner wall of the movable block, and a limiting post is slidably connected to the inner wall of the scraper.

[0009] Preferably, the upper surface of the scraper is fixedly connected to the outer wall of the spring, the other end of the spring is fixedly connected to a limiting shell, and the lower surface of the limiting shell is fixedly connected to the upper surface of the moving block.

[0010] Preferably, the outer wall of the outer shell is provided with a waste bin, and the lower surface of the outer shell is fixedly connected with a support column.

[0011] Preferably, both ends of the lead screw are rotatably connected to the inside of the housing, both ends of the support rod are fixedly connected to the inner wall of the housing, both ends of the rotating shaft are rotatably connected to the inside of the moving block, and the outer wall of the second bevel gear is rotatably connected to the inner wall of the moving block.

[0012] This utility model has the following beneficial effects: 1. In this utility model, the first motor is started to drive the lead screw to rotate. Through the cooperation of the moving shell, support rod, moving block, second motor, rotating shaft, first bevel gear, second bevel gear, gear, rack, first hydraulic cylinder, fixed block and rebound hammer, the detection of concrete of various sizes is achieved. The rebound hammer has the effect of improving accuracy by keeping the angle unchanged during detection.

[0013] 2. In this utility model, the second hydraulic cylinder is first activated. The output end of the second hydraulic cylinder drives the sliding block to move, which in turn drives the rotating rod to rotate, thereby driving the clamping plate to move. The clamping plates on both sides push the concrete to move towards the middle and restrict the concrete to prevent it from shifting, thus achieving the effect of facilitating concrete strength testing. Attached Figure Description

[0014] Figure 1 This is a perspective view of a concrete strength testing device for railway construction proposed in this utility model; Figure 2 This is a partial structural diagram of the movable shell of a concrete strength testing device for railway construction proposed in this utility model; Figure 3 This is a partial structural diagram of the clamping plate of a concrete strength testing device for railway construction proposed in this utility model; Figure 4This is a partial structural diagram of the scraper of a concrete strength testing device for railway construction proposed in this utility model.

[0015] Legend: 1. Outer shell; 2. First motor; 3. Lead screw; 4. Moving shell; 5. Support rod; 6. Moving block; 7. Second motor; 8. Rotating shaft; 9. First bevel gear; 10. Second bevel gear; 11. Gear; 12. Rack; 13. First hydraulic cylinder; 14. Fixed block; 15. Rebound spring; 16. Second hydraulic cylinder; 17. Sliding block; 18. Rotating rod; 19. Clamping plate; 20. Scraper; 21. Limiting shell; 22. Spring; 23. Limiting column; 24. Scrap bin; 25. Support column. Detailed Implementation

[0016] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] Reference Figure 1 and Figure 2 A concrete strength testing device for railway construction includes a housing 1. A first motor 2 is fixedly connected to the outer wall of the housing 1. A lead screw 3 is fixedly installed at the output end of the first motor 2. A movable housing 4 is threadedly connected to the outer wall of the lead screw 3. A support rod 5 is slidably connected inside the movable housing 4. A movable block 6 is slidably connected to the upper surface of the movable housing 4. A second motor 7 is fixedly connected to the outer wall of the movable block 6. A rotating shaft 8 is fixedly installed at the output end of the second motor 7. A first bevel gear 9 is fixedly connected to the outer wall of the rotating shaft 8. A second bevel gear 10 is meshed with the tooth end of the first bevel gear 9. A gear 11 is fixedly connected to the tooth end of the second bevel gear 10. A rack 12 is meshed with the tooth end of the gear 11. The outer wall of the rack 12 is fixedly connected to the inner wall of the movable housing 4. A testing component is provided on the upper surface of the movable block 6. Specifically, firstly, the first motor 2 is activated, driving the lead screw 3, which in turn moves the movable shell 4. The outer shell 1 restricts the first motor 2, ensuring its position remains unchanged. The support rod 5 supports and restricts the movable shell 4, converting the force of rotation driven by the lead screw 3 into linear motion. The outer shell 1 also supports and restricts the support rod 5, ensuring its position remains unchanged. The movable shell 4 supports and restricts the movable block 6, limiting its horizontal movement on the movable shell 4. The movable block 6 supports and... The mechanism restricts and ensures that the second motor 7 drives the rotating shaft 8 to rotate inside the moving block 6. The rotating shaft 8 supports and restricts the first bevel gear 9, causing the first bevel gear 9 to rotate. In turn, the first bevel gear 9 drives the second bevel gear 10 to rotate. The second bevel gear 10 restricts the gear 11, ensuring that the rotation of the second bevel gear 10 and the gear 11 on the moving block 6 will not result in positional deviation. The outer shell 1 supports and restricts the rack 12, causing the gear 11 to be restricted by the rack 12 and drive the moving block 6 to move. This achieves the effect of adjusting the detection position and can detect concrete of various sizes.

[0018] Reference Figure 1 and Figure 2 The detection component includes a first hydraulic cylinder 13, the outer wall of the first hydraulic cylinder 13 is fixedly disposed on the upper surface of the moving block 6, a fixed block 14 is fixedly disposed at the output end of the first hydraulic cylinder 13, and a rebound spring 15 is fixedly connected inside the fixed block 14. Specifically, the first hydraulic cylinder 13 is activated first. The moving block 6 supports and restricts the first hydraulic cylinder 13, ensuring that its position does not change when it is activated. The first hydraulic cylinder 13 moves the fixed block 14, which in turn moves the rebound hammer 15. The first hydraulic cylinder 13 restricts the fixed block 14, ensuring that it only moves up and down when driven by the first hydraulic cylinder 13. The fixed block 14 also restricts the rebound hammer 15, ensuring that its position does not shift when it tests the concrete. This achieves the effect of keeping the angle of the rebound hammer constant during multiple tests, thus improving accuracy.

[0019] Reference Figure 1 and Figure 3 A second hydraulic cylinder 16 is fixedly connected to the outer wall of the outer shell 1. A sliding block 17 is fixedly provided at the output end of the second hydraulic cylinder 16. The interior of the sliding block 17 is slidably connected to the inner wall of the outer shell 1. A rotating rod 18 is rotatably connected to the upper surface of the sliding block 17. A clamping plate 19 is rotatably connected to the upper surface of the rotating rod 18. The outer wall of the clamping plate 19 is slidably connected to the inner wall of the outer shell 1.

[0020] Specifically, the second hydraulic cylinder 16 is first activated, causing the sliding block 17 to move, which in turn causes the rotating rod 18 to rotate, thereby moving the clamping plate 19. The outer casing 1 supports and restricts the second hydraulic cylinder 16, ensuring its position remains unchanged. The outer casing 1 also supports and restricts the sliding block 17, preventing it from shifting left or right due to the rotating rod 18. The sliding block 17 supports and restricts the rotating rod 18, converting the linear horizontal rotational force of the rotating rod 18 into a rotational force. The outer casing 1 restricts the clamping plate 19, causing it to be driven by the rotating rod 18 to move linearly. The clamping plate 19 confines the concrete to the center of the outer casing 1, facilitating concrete strength testing.

[0021] Reference Figure 1 , Figure 2 and Figure 4 A scraper 20 is slidably connected to the inner wall of the moving block 6, and a limiting post 23 is slidably connected to the inner wall of the scraper 20; the upper surface of the scraper 20 is fixedly connected to the outer wall of the spring 22, and the other end of the spring 22 is fixedly connected to a limiting shell 21, and the lower surface of the limiting shell 21 is fixedly connected to the upper surface of the moving block 6; a waste bin 24 is provided on the outer wall of the outer shell 1, and a support post 25 is fixedly connected to the lower surface of the outer shell 1. Specifically, the moving block 6 restricts the scraper 20 to ensure that the scraper 20 does not produce errors when moving. The moving block 6 supports and restricts the limiting shell 21 so that the position of the limiting shell 21 does not change. The limiting column 23 restricts the scraper 20 so that the distance of the scraper 20 moving up and down is limited. The spring 22 restricts the scraper 20 so that the scraper 20 returns to its original position when it moves due to the restriction of the spring 22. The scraper 20 can remove dust and waste from the concrete and the inside of the shell 1. The shell 1 restricts the waste bin 24 so that the position of the waste bin 24 does not change and it can collect waste. The supporting column 25 supports and restricts the shell 1 so that the position of the shell 1 does not change. This achieves the effect of improving the accuracy of concrete strength testing and cleaning device.

[0022] Reference Figure 1 and Figure 2 Both ends of the lead screw 3 are rotatably connected to the inside of the housing 1, both ends of the support rod 5 are fixedly connected to the inner wall of the housing 1, both ends of the rotating shaft 8 are rotatably connected to the inside of the moving block 6, and the outer wall of the second bevel gear 10 is rotatably connected to the inner wall of the moving block 6. Specifically, the outer casing 1 supports and restricts the lead screw 3 and the support rod 5, ensuring that the lead screw 3 and the support rod 5 support the moving casing 4 and prevent deviation during movement. The moving block 6 supports and restricts the rotating shaft 8, ensuring that the second motor 7 drives the rotating shaft 8 to rotate without deviation. The moving block 6 supports and restricts the second bevel gear 10, ensuring that the position of the second bevel gear 10 does not change when it is driven by the first bevel gear 9 to rotate the gear 11.

[0023] Working principle: When the concrete strength is tested, the first motor 2 is turned on to drive the lead screw 3 to rotate, which in turn drives the moving shell 4 to move and adjust the position of the rebound hammer 15. Next, the second motor 7 is turned on to drive the rotating shaft 8 to rotate, which in turn drives the first bevel gear 9 to rotate. This drives the second bevel gear 10 to drive the gear 11 to rotate, and the gear 11 drives the moving block 6 to move on the moving shell 4. Finally, the first hydraulic cylinder 13 is started to drive the fixed block 14 to move, which in turn drives the rebound hammer 15 to move up and down to test the concrete. This achieves the effect of testing concrete of various sizes, and the rebound hammer can improve accuracy by keeping the angle constant during testing. When the concrete is placed inside the outer shell 1, the second hydraulic cylinder 16 is first activated to move the sliding block 17, which in turn drives the rotating rod 18 to rotate, thereby moving the clamping plate 19. The movement of the clamping plate 19 restricts the concrete to the middle position of the outer shell 1, achieving the effect of facilitating concrete strength testing. When preparing to test the concrete, the scraper 20 is first moved by the moving block 6. The bottom end of the scraper 20 is inclined and can be moved to the concrete surface to scrape away the dust. After the concrete strength test is completed, the spring 22 restricts the scraper 20 to reset it. It can scrape away the dust and waste inside the outer shell 1 and make it easier to clean into the waste bin 24, thereby improving the accuracy of concrete strength testing and the cleaning effect of the device. In other words, when in use, this device not only achieves the effect of testing concrete of various sizes, improving accuracy by keeping the angle constant during rebound hammer testing, but also facilitates concrete strength testing, further improves the accuracy of concrete strength testing, and cleans the device.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for detecting the strength of concrete used in railway construction, comprising a housing (1), characterized in that: The outer wall of the outer shell (1) is fixedly connected to a first motor (2), the output end of the first motor (2) is fixedly provided with a lead screw (3), the outer wall of the lead screw (3) is threadedly connected to a movable shell (4), the inside of the movable shell (4) is slidably connected to a support rod (5), the upper surface of the movable shell (4) is slidably connected to a movable block (6), the outer wall of the movable block (6) is fixedly connected to a second motor (7), the output end of the second motor (7) is fixedly provided with a rotating shaft (8), the outer wall of the rotating shaft (8) is fixedly connected to a first bevel gear (9), the tooth end of the first bevel gear (9) is meshed with a second bevel gear (10), the tooth end of the second bevel gear (10) is fixedly connected to a gear (11), the tooth end of the gear (11) is meshed with a rack (12), the outer wall of the rack (12) is fixedly connected to the inner wall of the movable shell (4), and the upper surface of the movable block (6) is provided with a detection component.

2. The concrete strength detection device for railway construction according to claim 1, characterized in that: The detection component includes a first hydraulic cylinder (13), the outer wall of which is fixedly disposed on the upper surface of the moving block (6), and a fixed block (14) is fixedly disposed at the output end of the first hydraulic cylinder (13). A rebound spring (15) is fixedly connected inside the fixed block (14).

3. The concrete strength testing device for railway construction according to claim 1, characterized in that: The outer wall of the outer shell (1) is fixedly connected to a second hydraulic cylinder (16), and a sliding block (17) is fixedly provided at the output end of the second hydraulic cylinder (16). The interior of the sliding block (17) is slidably connected to the inner wall of the outer shell (1), and a rotating rod (18) is rotatably connected to the upper surface of the sliding block (17).

4. The concrete strength testing device for railway construction according to claim 3, characterized in that: The upper surface of the rotating rod (18) is rotatably connected to a clamping plate (19), and the outer wall of the clamping plate (19) is slidably connected to the inner wall of the outer shell (1).

5. The concrete strength testing device for railway construction according to claim 1, characterized in that: The inner wall of the movable block (6) is slidably connected to a scraper (20), and the inner wall of the scraper (20) is slidably connected to a limiting post (23).

6. The concrete strength testing device for railway construction according to claim 5, characterized in that: The upper surface of the scraper (20) is fixedly connected to the outer wall of the spring (22), and the other end of the spring (22) is fixedly connected to the limiting shell (21). The lower surface of the limiting shell (21) is fixedly connected to the upper surface of the moving block (6).

7. The concrete strength testing device for railway construction according to claim 1, characterized in that: The outer wall of the outer shell (1) is provided with a waste bin (24), and a support column (25) is fixedly connected to the lower surface of the outer shell (1).

8. The concrete strength testing device for railway construction according to claim 1, characterized in that: Both ends of the lead screw (3) are rotatably connected to the inside of the outer shell (1), both ends of the support rod (5) are rotatably fixed to the inner wall of the outer shell (1), both ends of the rotating shaft (8) are rotatably connected to the inside of the moving block (6), and the outer wall of the second bevel gear (10) is rotatably connected to the inner wall of the moving block (6).

Images