Concrete core sample finishing device

Abstract

This utility model relates to a precision grinding and smoothing device for core samples used in concrete compressive strength testing, belonging to the field of core sample processing technology. It includes a base, a support fixed to the top of the base, a hydraulic push rod mounted on the top of the support, the output end of the hydraulic push rod penetrating the inner top wall of the support and fixed to a first support plate, a first motor installed inside the first support plate, and a grinding disc fixed to the output end of the first motor penetrating the bottom end of the first support plate. Connecting blocks are provided on both sides of the top of the base, each connecting block containing three arc-shaped clamping blocks. Multiple connecting slots are formed within the base. This device, by providing three arc-shaped clamping blocks in each connecting block, with the three arc-shaped clamping blocks decreasing in size from bottom to top, allows each pair of opposing arc-shaped clamping blocks to correspond to core samples of different diameters (0-50mm, 50-100mm, and 100-150mm), eliminating the need for external clamp replacement by the user. It automatically selects the appropriate arc-shaped clamping block based on the size of the core sample, enhancing its practicality.

Description

Technical Field

[0001] This utility model relates to the field of core sample processing technology, and in particular to a fine grinding and smoothing device for core samples used in concrete compressive strength testing. Background Technology

[0002] In the quality inspection of building engineering, the compressive strength of concrete is the core indicator for assessing structural safety, and core sampling is a common method for testing. The flatness of the core sample directly affects the accuracy of the test results.

[0003] In the existing technology, the existing core sample grinding and smoothing device for testing the compressive strength of concrete requires manual replacement of positioning fixtures or adjustment of clamping mechanism parameters for core samples with different diameters of 50mm, 100mm or 150mm. The switching process takes about 5-10 minutes, which affects the batch processing efficiency, has great limitations and poor practicality. Utility Model Content

[0004] This utility model mainly provides a fine grinding and smoothing device for core samples used in concrete compressive strength testing, which can automatically and quickly adjust the core sample diameter according to different ranges.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a fine grinding and smoothing device for core samples used in concrete compressive strength testing, comprising a base, a bracket fixed to the top of the base, a hydraulic push rod installed at the top of the bracket, the output end of the hydraulic push rod penetrating the inner top wall of the bracket and fixed to a first support plate, a first motor installed inside the first support plate, the output end of the first motor penetrating the bottom end of the first support plate and fixed to a grinding disc, connecting blocks provided on both sides of the top of the base, three arc-shaped clamping blocks provided in the connecting blocks, multiple communicating grooves opened inside the base, an opening communicating with the communicating grooves opened at the bottom of the base, and a controller installed at one end of the base.

[0006] Preferably, each of the two connecting blocks has three inner cavities at one end that match the arc-shaped clamping blocks. A third electric telescopic rod is installed on the inner wall of each cavity. The output end of the third electric telescopic rod is fixed to the arc-shaped clamping block. By operating the third electric telescopic rod, the corresponding arc-shaped clamping block can be moved out of the connecting block. Each arc-shaped clamping block of different sizes can correspond to core samples of different diameters of -mm, -mm and -mm respectively. There is no need for the user to change the clamps externally. It can automatically adjust according to the size of the core sample, making it more practical.

[0007] Preferably, a first electric telescopic rod is installed on both sides of the bottom end of the bracket. A support block is fixed to the output end of the first electric telescopic rod. A second motor is installed at one end of the support block. A second support plate is fixed to the output end of the second motor. A second electric telescopic rod is fixed to one end of the second support plate. The output end of the second electric telescopic rod is fixed to the connecting block. By operating the first electric telescopic rod, the connecting block can be raised and lowered. By operating the second motor, the connecting block can be rotated. By operating the second electric telescopic rod, the connecting block can be moved laterally. Through the coordination of the lateral movement, raising and lowering, and rotation of the connecting block, the core sample can be clamped and fixed on one hand, and raised and lowered to rotate it on the other hand, so that the core sample can be automatically rotated, thereby polishing the other end of the core sample, which is more practical.

[0008] Preferably, the arc-shaped clamps decrease in size from bottom to top. This allows each pair of opposing arc-shaped clamps to correspond to core samples with different diameters of 0-50mm, 50-100mm, and 100-150mm, respectively. This eliminates the need for users to change clamps externally and allows for the automatic selection of appropriate arc-shaped clamps based on the size of the core sample, thus enhancing practicality.

[0009] Preferably, a stabilizing plate is rotatably connected between the second support plate and the support block on the outside of the second motor. The stabilizing plate can provide auxiliary support for the second support plate, avoiding damage caused by the second motor supporting the second support plate alone, thus improving stability.

[0010] Preferably, both ends of the base are fixed with mounting plates, and each of the two mounting plates has multiple mounting holes. The mounting plates and mounting holes allow the base to be installed and disassembled as a whole.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, the device has three arc-shaped clamping blocks in each connecting block, and the three arc-shaped clamping blocks are progressively smaller from bottom to top. Each pair of opposing arc-shaped clamping blocks can correspond to core samples with different diameters of 0-50mm, 50-100mm and 100-150mm respectively. The device can automatically select the appropriate arc-shaped clamping block according to the size of the core sample without the user having to change the clamps externally, thus making it more practical. Attached Figure Description

[0012] Figure 1 A perspective view of the precision grinding and smoothing device for testing the compressive strength of concrete core samples proposed in this utility model; Figure 2 A bottom view of the precision grinding and smoothing device for testing the compressive strength of concrete core samples proposed in this utility model; Figure 3 A cross-sectional view of the fine grinding and smoothing device for testing the compressive strength of concrete core samples proposed in this utility model; Figure 4 This invention presents a schematic diagram of the external structure of the arc-shaped clamping block of the fine grinding and smoothing device for testing the compressive strength of concrete core samples.

[0013] Legend: 1. Base; 2. Bracket; 3. Hydraulic push rod; 4. First support plate; 5. First motor; 6. Grinding disc; 7. First electric telescopic rod; 8. Support block; 9. Second motor; 10. Second support plate; 11. Stabilizing plate; 12. Second electric telescopic rod; 13. Connecting block; 14. Inner cavity; 15. Third electric telescopic rod; 16. Arc-shaped clamping block; 17. Connecting groove; 18. Opening; 19. Mounting plate; 20. Mounting hole; 21. Controller. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0015] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0016] Please see Figures 1-4This utility model provides a technical solution: a fine grinding and smoothing device for core samples used in concrete compressive strength testing, comprising a base 1, a bracket 2 fixed to the top of the base 1, a hydraulic push rod 3 installed at the top of the bracket 2, the output end of the hydraulic push rod 3 penetrating the inner top wall of the bracket 2 and fixed to a first support plate 4, a first motor 5 installed in the first support plate 4, the output end of the first motor 5 penetrating the bottom end of the first support plate 4 and fixed to a grinding disc 6, connecting blocks 13 provided on both sides of the top of the base 1, three arc-shaped clamping blocks 16 provided in the connecting blocks 13, multiple connecting grooves 17 opened in the base 1, and an opening 18 connected to the connecting grooves 17 opened at the bottom of the base 1, and a controller 21 installed at one end of the base 1. By operating the hydraulic push rod 3, the grinding disc 6 can be driven to rise and fall as a whole. By operating the first motor 5, the grinding disc 6 can be driven to rotate, thereby grinding the top of the clamped core sample. The three arc-shaped clamping blocks 16 are arranged in order from bottom to top. The size of the device is reduced, and each pair of opposing arc-shaped clamps 16 can correspond to core samples of different diameters of 0-50mm, 50-100mm, and 100-150mm respectively. There is no need for the user to change the clamps externally. The device can automatically select the appropriate arc-shaped clamp 16 according to the size of the core sample, which is more practical. When installing the base 1, the device is installed on the external suction mechanism. Through the setting of the connecting groove 17, the external suction mechanism can suck up the dust generated during grinding through the connecting groove 17 and the opening 18, preventing it from spreading in the air and causing harm to the user's body, which is more practical. The controller 21 of this device is electrically connected to the hydraulic push rod 3, the first motor 5, the second motor 9, the first electric telescopic rod 7, the second electric telescopic rod 12, and the third electric telescopic rod 15. Therefore, the controller 21 can control the operation of the hydraulic push rod 3, the first motor 5, the second motor 9, the first electric telescopic rod 7, the second electric telescopic rod 12, and the third electric telescopic rod 15.

[0017] like Figure 1-4 As shown, each of the two connecting blocks 13 has three inner cavities 14 at one end that match the arc-shaped clamping block 16. A third electric telescopic rod 15 is installed on the inner wall of each inner cavity 14. The output end of the third electric telescopic rod 15 is fixed to the arc-shaped clamping block 16. By operating the third electric telescopic rod 15, the corresponding arc-shaped clamping block 16 can be moved out of the connecting block 13. Each arc-shaped clamping block 16 of different sizes can correspond to core samples of different diameters of 0-50mm, 50-100mm and 100-150mm respectively. There is no need for the user to change the clamp externally. It can automatically adjust according to the size of the core sample, making it more practical.

[0018] like Figure 1-4As shown, a first electric telescopic rod 7 is installed on both sides of the bottom end of the bracket 2. A support block 8 is fixed to the output end of the first electric telescopic rod 7. A second motor 9 is installed on one end of the support block 8. A second support plate 10 is fixed to the output end of the second motor 9. A second electric telescopic rod 12 is fixed to one end of the second support plate 10. The output end of the second electric telescopic rod 12 is fixed to the connecting block 13. By operating the first electric telescopic rod 7, the connecting block 13 can be raised and lowered. By operating the second motor 9, the connecting block 13 can be rotated. By operating the second electric telescopic rod 12, the connecting block 13 can be moved laterally. Through the coordination of the lateral movement, raising and lowering, and rotation of the connecting block 13, the core sample can be clamped and fixed on one hand, and raised and lowered to rotate it on the other hand, so that the core sample can be automatically rotated, thereby polishing the other end of the core sample, making it more practical.

[0019] like Figure 1-4 As shown, the arc-shaped clamping blocks 16 gradually decrease in size from bottom to top. By having the arc-shaped clamping blocks 16 gradually decrease in size from bottom to top, each pair of opposite arc-shaped clamping blocks 16 can correspond to core samples with different diameters of 0-50mm, 50-100mm and 100-150mm respectively. This eliminates the need for users to change the clamps externally, and can automatically select the appropriate arc-shaped clamping block 16 according to the size of the core sample, making it more practical.

[0020] like Figure 1-4 As shown, a stabilizing plate 11 is rotatably connected between the second support plate 10 and the support block 8 on the outside of the second motor 9. The stabilizing plate 11 can provide auxiliary support for the second support plate 10, avoiding damage caused by the second motor 9 supporting the second support plate 10 alone, thus improving stability.

[0021] like Figure 1-4 As shown, mounting plates 19 are fixed at both ends of the base 1. Multiple mounting holes 20 are provided in both mounting plates 19. The base 1 can be installed and disassembled as a whole through the mounting plates 19 and the mounting holes 20.

[0022] The usage and working principle of this device are as follows: When using this device, the core sample is placed on the base 1. According to the diameter of the core sample, the corresponding two third electric telescopic rods 15 are controlled to move, thereby driving the two arc-shaped clamping blocks 16 to move out of the two connecting blocks 13. At this time, the two second electric telescopic rods 12 move, driving the two connecting blocks 13 and the arc-shaped clamping blocks 16 at their opposite ends to move towards each other, clamping and fixing the core sample. At this time, the operation of the hydraulic push rod 3 drives the grinding disc 6 to descend. The grinding disc 6 is directly driven by the first motor 5. The first motor 5 adopts a high-precision servo control system, and the speed can be steplessly adjusted from 0-3000r / min through the controller 21. Different rotation speed parameters can be matched for concrete core samples of different strength grades: a rotation speed of 1500-2000 r / min is used for low-strength concrete to avoid the core sample surface from cracking due to high-speed friction; a rotation speed of 2500-3000 r / min is used for high-strength concrete to ensure that the end face quickly reaches mirror flatness and achieves the effect of fine processing. After grinding, the grinding disc 6 rises, the first electric telescopic rod 7 runs, driving the clamped core sample to rise. Through the operation of the two second motors 9, the clamped core sample is rotated, so that its bottom end can be further ground.

[0023] The wiring diagrams of the controller 21, hydraulic push rod 3, first motor 5, second motor 9, first electric telescopic rod 7, second electric telescopic rod 12, and third electric telescopic rod 15 in this utility model are common knowledge in the field. Their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control methods and wiring layouts of the controller 21, hydraulic push rod 3, first motor 5, second motor 9, first electric telescopic rod 7, second electric telescopic rod 12, and third electric telescopic rod 15 will not be explained in detail.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A finishing and flattening device for core samples for the detection of the compressive strength of concrete, comprising a base (1), characterized in that: The top of the base (1) is fixed with a bracket (2), and the top of the bracket (2) is equipped with a hydraulic push rod (3). The output end of the hydraulic push rod (3) passes through the inner top wall of the bracket (2) and is fixed with a first support plate (4). The first support plate (4) is equipped with a first motor (5). The output end of the first motor (5) passes through the bottom end of the first support plate (4) and is fixed with a grinding disc (6). Both sides of the top of the base (1) are provided with connecting blocks (13). The connecting blocks (13) are provided with three arc-shaped clamping blocks (16). The base (1) is provided with multiple connecting slots (17). The bottom end of the base (1) is provided with an opening (18) that communicates with the connecting slots (17). A controller (21) is installed at one end of the base (1).

2. The finishing and flattening device for a core sample for detecting the compressive strength of concrete according to claim 1, characterized in that: The two connecting blocks (13) have three inner cavities (14) at opposite ends that match the arc-shaped clamping block (16). Each inner cavity (14) has a third electric telescopic rod (15) installed on its inner wall. The output end of the third electric telescopic rod (15) is fixed to the arc-shaped clamping block (16).

3. The fine grinding and smoothing device for core samples used in concrete compressive strength testing according to claim 1, characterized in that: The bracket (2) has a first electric telescopic rod (7) installed on both sides of its bottom end. The output end of the first electric telescopic rod (7) is fixed with a support block (8). A second motor (9) is installed on one end of the support block (8). A second support plate (10) is fixed on the output end of the second motor (9). A second electric telescopic rod (12) is fixed on one end of the second support plate (10). The output end of the second electric telescopic rod (12) is fixed to the connecting block (13).

4. The finishing and flattening device for a core sample for detecting the compressive strength of concrete according to claim 1, characterized in that: The arc-shaped clamps (16) decrease in size from bottom to top.

5. The finishing and flattening device for a core sample for detecting the compressive strength of concrete according to claim 3, characterized in that: A stabilizing plate (11) is rotatably connected between the second support plate (10) and the support block (8) on the outside of the second motor (9).

6. The finishing and flattening device for a core sample for concrete compressive strength testing according to claim 1, characterized in that: Both ends of the base (1) are fixed with mounting plates (19), and both mounting plates (19) have multiple mounting holes (20).

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