Slump detection device for concrete

Abstract

The utility model relates to civil engineering material detection technical field discloses the slump detection device for concrete, including protective housing no.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering material testing technology, and in particular to a slump testing device for concrete. Background Technology

[0002] The concrete slump testing device mainly consists of a slump cylinder, a tamping rod, and a steel ruler. The slump cylinder is a truncated cone with a smooth inner wall. The inner diameter and height of the bottom and top are strictly regulated. The tamping rod is made of round-headed steel and is used to compact the concrete. The steel ruler is used to measure the height of the concrete slump. Concrete slump testing is conducted to ensure that the workability of the concrete meets the construction requirements. Concrete with good workability is easier to transport, pour, and vibrate during construction, which can ensure the quality of concrete component forming and avoid defects such as honeycomb and pitting. Slump testing can also promptly detect whether the concrete mix proportion is reasonable, making it easier for construction personnel to adjust parameters such as the water-cement ratio, thus ensuring the overall strength and durability of the project.

[0003] The slump test device for concrete mainly consists of a slump cylinder, a tamping rod, and a steel ruler. The slump cylinder is a truncated cone with a smooth inner wall. Its bottom inner diameter, top inner diameter, and cylinder height all have specific specifications to ensure accuracy. The tamping rod, made of round-headed steel, is used to compact the concrete sample, ensuring uniform distribution of the concrete within the cylinder. The steel ruler is used to accurately measure the height of the slumped concrete. This height value is used to determine the workability and other performance indicators of the concrete. These components work together to form a complete slump test device, providing a reliable tool for concrete quality testing.

[0004] In existing technologies, operators mostly rely on manual visual inspection for placement. This non-standardized installation method is prone to tilting errors in the slump cone. When the slump cone tilts, the concrete will be affected by lateral friction during the slump due to the tilt of the cone wall. This causes the measured slump height value to deviate from the actual workability performance, which not only reduces the reliability of the test results but also leads to misjudgment of the concrete mix proportion due to the accumulation of errors, thus affecting the quality of engineering construction. Therefore, a slump testing device for concrete is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a slump testing device for concrete, which aims to improve the problem that the slump cylinder has tilting errors during installation, thereby reducing the reliability of the test results.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A slump testing device for concrete includes a protective shell 1, a protective shell 2 detachably connected to the inner wall of the protective shell 1, a cylinder fixedly connected to the inner wall of the protective shell 2, a trapezoidal slider fixedly connected to the drive end of the cylinder, a plurality of sliding blocks 1 slidably connected to the outer wall of the trapezoidal slider, and a vibration component for vibrating the concrete provided on the inner wall of the protective shell 1.

[0008] As a further description of the above technical solution:

[0009] The vibration assembly includes a motor, the outer wall of which is fixedly connected to the inner wall of the protective shell, a turntable is fixedly connected to the drive end of the motor, a connecting column is fixedly connected to the outer wall of the turntable, a vibration arm is fixedly connected to the outer wall of the connecting column, a support column is rotatably connected to the inner wall of the vibration arm, and a sliding plate is fixedly connected to the top of the support column.

[0010] As a further description of the above technical solution:

[0011] The inner wall of the first sliding block is slidably connected to the second sliding block, the rear side of the second sliding block is fixedly connected to the limit rod, the bottom end of the second sliding block is fixedly connected to the first support plate, and the rear side of the first support plate is fixedly connected to the first spring.

[0012] As a further description of the above technical solution:

[0013] A support plate 2 is fixedly connected to the rear side of the spring 1, and the outer wall of the support plate 2 is fixedly connected to the inner wall of the sliding block 1.

[0014] As a further description of the above technical solution:

[0015] The outer wall of the limiting rod is slidably connected to the inner wall of the first sliding block, and the inner wall of the second protective shell is fixedly connected to a plurality of limiting plates. The outer wall of the first sliding block is slidably connected to the inner wall of the limiting plate, and the top end of the second protective shell is fixedly connected to a slump cylinder.

[0016] As a further description of the above technical solution:

[0017] The left side of the vibrating arm is rotatably connected to the inner wall of the protective shell, and the outer wall of the sliding disk is slidably connected to the inner wall of the protective shell.

[0018] As a further description of the above technical solution:

[0019] The inner wall of the first protective shell is fixedly connected to a limit post, and the inner wall of the first protective shell is fixedly connected to multiple telescopic rods.

[0020] As a further description of the above technical solution:

[0021] The outer wall of the telescopic rod is fitted with a second spring. The bottom end of the second spring is fixedly connected to the inner wall of the first protective shell, and the top end of the second spring is fixedly connected to the bottom end of the sliding disc.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the trapezoidal slider is driven by a cylinder to move up and down, which drives the cooperation of sliding block one and sliding block two to achieve adaptive positioning. When the trapezoidal slider moves up, sliding block two presses against the inner wall of the protective shell to ensure that the slump cylinder is installed in the center and is not tilted, thus improving the slump detection error caused by installation deviation. When the trapezoidal slider moves down, the slump cylinder can be disassembled. This positioning structure achieves automatic centering through mechanical linkage. Compared with traditional manual positioning, it reduces the verticality error of the slump cylinder installation and improves the convenience of the detection process.

[0024] 2. In this utility model, the motor drives the vibrating arm to tilt back and forth through the turntable and connecting column. The vibration is transmitted to the slump cylinder through the support column and sliding plate to simulate the construction vibration condition. This improves the problem of the deviation between traditional static detection and actual construction performance. The eccentric wheel structure of the vibrating arm, combined with the buffer design of the spring and the telescopic rod, makes the vibration frequency stable. This can effectively promote the flowability detection of self-compacting concrete and avoid aggregate segregation caused by over-vibration, thereby improving the accuracy of concrete workability assessment. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the slump detection device for concrete proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the protective shell of the concrete slump testing device proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the protective shell II for the concrete slump detection device proposed in this utility model.

[0028] Figure 4 This is a schematic diagram of the turntable structure of the concrete slump testing device proposed in this utility model.

[0029] Legend:

[0030] 1. Protective shell one; 2. Protective shell two; 3. Cylinder; 4. Trapezoidal slider; 5. Sliding block one; 6. Sliding block two; 7. Limiting rod; 8. Support plate one; 9. Spring one; 10. Support plate two; 11. Limiting plate; 12. Motor; 13. Turntable; 14. Connecting column; 15. Vibrating arm; 16. Supporting column; 17. Sliding disc; 18. Limiting column; 19. Telescopic rod; 20. Spring two; 21. Slump cone. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1 to 3 This utility model provides an embodiment of a slump testing device for concrete, comprising a protective shell 1 for protecting internal positioning and vibration components. A second protective shell 2 is detachably connected to the inner wall of the first protective shell 1, facilitating the disassembly of the slump cylinder 21. A cylinder 3 is fixedly connected to the inner wall of the second protective shell 2, serving as a power source providing linear drive power. A trapezoidal slider 4 is fixedly connected to the drive end of the cylinder 3, performing vertical reciprocating motion under the drive of the cylinder 3 to position a second sliding block 6. The outer wall of the trapezoidal slider 4 is slidably connected... Multiple sliding blocks 5 are connected. Sliding blocks 5 can slide on the inclined surface of the trapezoidal slider 4, thereby realizing the horizontal movement of sliding blocks 5. The inner wall of the protective shell 1 is provided with a vibration component for vibrating the concrete to apply vibration to the concrete to simulate the vibration condition in construction. Sliding blocks 6 are slidably connected to the inner wall of sliding blocks 5. Sliding blocks 6 can slide on the inner wall of sliding blocks 5. After sliding blocks 6 contact the protective shell 1, they achieve self-adaptive positioning. A limit rod 7 is fixedly connected to the rear side of sliding blocks 6. The limit rod 7 is used to limit the sliding range of sliding blocks 6 and ensure the stability of reciprocating motion.

[0033] A support plate 8 is fixedly connected to the bottom end of sliding block 2 6. The sliding of sliding block 2 6 compresses spring 9 through support plate 8. Spring 9 is fixedly connected to the rear side of support plate 8. Spring 9 is elastic and can deform under force, providing buffering and support for the adaptive positioning of sliding block 2 6. Support plate 2 10 is fixedly connected to the rear side of spring 9. Support plate 2 10 is used to fix one end of spring 9 to ensure stable installation. The outer wall of support plate 2 10 is fixedly connected to the inner wall of sliding block 5, so that support plate 2 10 and sliding block 5 can move together. Support plate 8 slides on the inner wall of sliding block 5, but support plate 8 will not slide with it. When sliding block 5 moves together, support plate 2 10 will move together with sliding block 5. The outer wall of limit rod 7 is slidably connected to the inner wall of sliding block 5. Limit rod 7 prevents sliding block 2 6 from shaking during movement. Multiple limit plates 11 are fixedly connected to the inner wall of protective shell 2. Limit plates 11 are used to limit sliding block 5 to ensure that it slides in the horizontal direction. The outer wall of sliding block 5 is slidably connected to the inner wall of limit plate 11, so that sliding block 5 can slide on the inner wall of limit plate 11, ensuring the accuracy of the movement trajectory. A slump cylinder 21 is fixedly connected to the top of protective shell 2. Slump cylinder 21 is used to hold concrete and is the core component for slump detection.

[0034] Reference Figure 2 and Figure 4 The vibration assembly includes a motor 12, which serves as the power source for the vibration assembly and provides rotational power. The outer wall of the motor 12 is fixedly connected to the inner wall of the protective shell 1 to achieve stable installation of the motor 12. A turntable 13 is fixedly connected to the drive end of the motor 12, and the motor 12 drives the turntable 13 to rotate in different directions. A connecting column 14 is fixedly connected to the outer wall of the turntable 13, and the connecting column 14 rotates with the turntable 13 to transmit power. The connecting column 14 and the turntable 13 together form an eccentric wheel structure. A vibration arm 15 is fixedly connected to the outer wall of the connecting column 14, and the connecting column 14 drives the vibration arm 15 to reciprocate, causing the vibration arm 15 to vibrate. A support column 16 is rotatably connected to the inner wall of the vibration arm 15, and the support column 16 is used to transmit vibration. The vibration of the vibration arm 15 is applied to the slump cylinder 21 through the sliding of the sliding disk 17. The top of the support column 16 is fixedly connected to the sliding disk 17, and the sliding disk 17 transmits the vibration generated by the vibration arm 15 to the protective shell 2.

[0035] The left side of the vibrating arm 15 is rotatably connected to the inner wall of the protective shell 1, allowing the left side of the vibrating arm 15 to rotate around the fulcrum of the inner wall of the protective shell 1, thus achieving the swing vibration of the vibrating arm 15. The outer wall of the sliding disk 17 is slidably connected to the inner wall of the protective shell 1, allowing the sliding disk 17 to slide on the inner wall of the protective shell 1, cooperating with the support column 16 and the vibrating arm 15 to achieve stable vibration. The inner wall of the protective shell 1 is fixedly connected to a limit post 18, which is used to limit the transmission shaft of the second motor 12, ensuring the accuracy of the movement of the second motor 12. The inner wall of the protective shell 1 is fixedly connected to... Multiple telescopic rods 19 are provided, which can extend and retract when subjected to force to provide support. A second spring 20 is fitted on the outer wall of each telescopic rod 19. The second spring 20 is fitted on the outer wall of the telescopic rod 19 and cooperates with it. By storing and releasing elastic potential energy, the second spring 20 can buffer vibration, reduce impact, and maintain the stability of the system vibration. The bottom end of the second spring 20 is fixedly connected to the inner wall of the protective shell 1, thus fixing one end of the second spring 20. The top end of the second spring 20 is fixedly connected to the bottom end of the sliding plate 17, so that the second spring 20 and the sliding plate 17 can be linked together.

[0036] Working principle: When cylinder 3 drives trapezoidal slider 4 to move upward, the inclined surface of trapezoidal slider 4 pushes multiple sliding blocks 5 to slide outward along the limiting plate 11. Sliding outward means moving away from trapezoidal slider 4, and sliding inward means moving closer to trapezoidal slider 4. Sliding block 5 drives support plate 10 to move outward together, support plate 10 drives spring 9 to move outward together, and spring 9 drives support plate 8 to move outward together. When sliding block 6 contacts protective shell 1, sliding block 6 slides inward, and sliding block 6 drives support plate 8 to slide inward together. At this time, spring 9 is compressed, thereby realizing the adaptive positioning of sliding block 6. Block 26 abuts against the inner wall of the protective shell 1 to achieve the installation and positioning of the slump cylinder 21, ensuring that the slump cylinder 21 is centered and does not tilt. When the cylinder 3 drives the trapezoidal slider 4 to move downward, the inclined surface of the trapezoidal slider 4 disengages from pushing the sliding block 5, and the compressed spring 9 releases its elastic potential energy. The spring 9 pushes the sliding block 5 inward through the limiting plate 11, and the spring 9 and the sliding block 5 are reset. The sliding block 26 loses the support force of the spring 9. The sliding block 26 can slide inward with the sliding block 5, or it can remain in the same position, thereby releasing the installation and positioning of the slump cylinder 21, which is convenient for moving or readjusting the position of the device.

[0037] After the motor 12 starts and rotates, it drives the turntable 13 at its drive end to rotate synchronously. The connecting column 14 on the outer wall of the turntable 13 rotates with the turntable 13, which in turn drives the vibrating arm 15 to perform up-and-down reciprocating vibration. Since the left side of the vibrating arm 15 is rotatably connected to the inner wall of the protective shell 1, and the right side performs circular motion under the drive of the connecting column 14, the vibrating arm 15 tilts repeatedly around the left fulcrum. The repeated tilting of the vibrating arm 15 drives the support column 16 to move up and down reciprocally. The support column 16 drives the sliding plate 17 to vibrate up and down together. At the same time, the telescopic rod 19 and the spring 20 work together to buffer, and finally the sliding plate 17 produces stable up-and-down vibration, thereby applying a vibration effect to the concrete.

[0038] 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 slump testing device for concrete, comprising a protective shell (1), characterized in that: The inner wall of the first protective shell (1) is detachably connected to the second protective shell (2). The inner wall of the second protective shell (2) is fixedly connected to the cylinder (3). The driving end of the cylinder (3) is fixedly connected to the trapezoidal slider (4). The outer wall of the trapezoidal slider (4) is slidably connected to multiple sliding blocks (5). The inner wall of the first protective shell (1) is provided with a vibration component for vibrating the concrete.

2. The slump testing device for concrete according to claim 1, characterized in that: The vibration assembly includes a motor (12), the outer wall of which is fixedly connected to the inner wall of the protective shell (1), a turntable (13) is fixedly connected to the drive end of the motor (12), a connecting column (14) is fixedly connected to the outer wall of the turntable (13), a vibration arm (15) is fixedly connected to the outer wall of the connecting column (14), a support column (16) is rotatably connected to the inner wall of the vibration arm (15), and a sliding disk (17) is fixedly connected to the top of the support column (16).

3. The slump testing device for concrete according to claim 1, characterized in that: The inner wall of the sliding block 1 (5) is slidably connected to the sliding block 2 (6), the rear side of the sliding block 2 (6) is fixedly connected to the limit rod (7), the bottom end of the sliding block 2 (6) is fixedly connected to the support plate 1 (8), and the rear side of the support plate 1 (8) is fixedly connected to the spring 1 (9).

4. The slump testing device for concrete according to claim 3, characterized in that: The rear side of the spring 1 (9) is fixedly connected to the support plate 2 (10), and the outer wall of the support plate 2 (10) is fixedly connected to the inner wall of the sliding block 1 (5).

5. The slump testing device for concrete according to claim 3, characterized in that: The outer wall of the limiting rod (7) is slidably connected to the inner wall of the sliding block (5), and the inner wall of the protective shell (2) is fixedly connected to a plurality of limiting plates (11). The outer wall of the sliding block (5) is slidably connected to the inner wall of the limiting plate (11), and the top of the protective shell (2) is fixedly connected to a slump cylinder (21).

6. The slump testing device for concrete according to claim 2, characterized in that: The left side of the vibrating arm (15) is rotatably connected to the inner wall of the protective shell (1), and the outer wall of the sliding disk (17) is slidably connected to the inner wall of the protective shell (1).

7. The slump testing device for concrete according to claim 2, characterized in that: The inner wall of the protective shell (1) is fixedly connected to a limit post (18), and the inner wall of the protective shell (1) is fixedly connected to multiple telescopic rods (19).

8. The slump testing device for concrete according to claim 7, characterized in that: The outer wall of the telescopic rod (19) is fitted with a second spring (20), the bottom end of the second spring (20) is fixedly connected to the inner wall of the first protective shell (1), and the top end of the second spring (20) is fixedly connected to the bottom end of the sliding disc (17).

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