Movable core sample compressive strength detection system
By integrating pallets, dimensional measuring instruments and presses in the freight container, and using robot clamps to automatically operate, the inefficiency, low accuracy and safety risks caused by manual operation in the prior art are solved, and efficient and safe core sample compressive strength detection is achieved.
Patent Information
- Application Number
- CN202421301589.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-06-07
AI Technical Summary
During the existing core sample compressive strength detection process, relying on manual operations leads to high labor intensity, low efficiency, high safety risks and low accuracy, and there are large human errors in the measurement of the specimen size.
A mobile core sample compressive strength detection system is designed, integrated into a freight container, including pallets, dimension measuring instruments, presses and robotic clips. The test pieces are handled, dimensional measurements and compressive strength detection through robotic automation operations, and accurate measurements and data analysis are used for sensor sets.
It improves the inspection efficiency and accuracy, reduces the labor intensity of operators, reduces safety risks, and improves the accuracy and safety of test piece inspection through automated integration.
Smart Images
Figure CN223234431U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of core sample compressive strength detection, in particular to a mobile core sample compressive strength detection system. Background Art
[0002] Core samples are drilled from concrete structures and used to assess the actual quality and strength of concrete (composed of cement, sand, gravel, water additives, etc.). The compressive strength of core samples depends on many factors, including the materials used and the construction method. It is also influenced by factors such as specimen size, loading method, and loading rate. To ensure that construction projects meet design requirements, core samples must be rigorously and accurately tested.
[0003] In the current core sample compressive strength testing process, most tests still rely on manual specimen handling. Operators must move the specimen from a cart to the center of the pressure testing machine for testing and then return it to the cart for removal. This process is not only labor-intensive, inefficient, and costly, but also presents safety risks. Furthermore, specimen dimensional measurement currently relies on manual calipers, which leads to significant human error and low precision, thus affecting the accuracy of compressive strength test results. Utility Model Content
[0004] Purpose of the utility model: The purpose of the utility model is to provide a mobile core sample compressive strength testing system for improving the efficiency, accuracy and safety of core sample compressive strength testing tests.
[0005] Technical Solution: To achieve the above-mentioned objectives, the present invention provides a mobile core sample compressive strength testing system, comprising a freight container, wherein the freight container is integrated with equipment related to core sample testing, including a tray for placing multiple sets of core sample specimens to be tested, a dimension measuring instrument for performing dimensional inspection on the core sample specimens to be tested, a press for performing compressive strength inspection on the core sample specimens, and a robotic gripper; wherein the positions of the core sample specimens to be tested on the tray, the dimension measuring instrument, and the press are all within the gripping range of the robotic gripper;
[0006] The dimension measuring instrument comprises a turntable for placing the core sample to be inspected. The turntable can rotate around an axis and is surrounded by a sensor group for measuring the diameter and height of the core sample to be inspected.
[0007] The core sample to be tested is affixed with an identification code, and a code scanning component for identifying information of the core sample to be tested is installed above the dimension measuring instrument.
[0008] Among them, an induction sensor is also provided on one side of the turntable for detecting whether the core sample to be tested has been placed on the code scanning platform.
[0009] Wherein, centering plates are provided on both sides of the turntable to align the position of the core sample to be tested to the center of the turntable through lateral movement.
[0010] Among them, the turntable is surrounded by sensor groups for measuring the diameter and height of the core sample to be tested, including sensor group 1 and sensor group 2 for measuring the diameter data of the upper, middle and lower heights of the core sample, and sensor group 3 and sensor group 4 for measuring the initial height data of the upper and lower planes of the core sample.
[0011] Among them, a pusher cleaning component 1 for cleaning the upper surface of the turntable is also provided on one side of the turntable.
[0012] Wherein, the turntable is provided with a hole whose size is smaller than the core sample to be tested, and a dust box is provided under the hole.
[0013] Among them, the upper part of the press is the detection area, which includes a lower pressure plate for placing the core sample specimen. A pusher and cleaning component 2 is installed on one side of the lower pressure plate, and a downward-inclined blanking plate is connected to the other side. Protective plates are installed on the other two sides of the lower pressure plate.
[0014] Wherein, a drawer box for collecting core sample residue and dust after the test is completed is provided below the second pushing and cleaning component.
[0015] Wherein, a monitoring component for recording the stress change during the compressive strength test of the core sample is provided at the rear of the press.
[0016] Beneficial effects: The utility model has the following advantages: 1. The system integrates the equipment related to core sample testing inside the freight container, which not only fixes all the equipment and enables efficient collaboration between the equipment, but also utilizes the portability of the freight container to enable the entire system to be quickly transferred and dispatched for use, thereby improving testing efficiency;
[0017] 2. This system uses a robot gripper to quickly and accurately pick up and place core sample specimens between other equipment. It has a high degree of automation integration and strong flexibility, which reduces the labor intensity of operators, improves operational efficiency, and further solves the safety hazards caused by manual operation.
[0018] 3. This system first uses a dimension measuring instrument to measure the diameter, height, and flatness of the upper and lower end surfaces of the core sample, further eliminating unqualified specimens and improving the accuracy of the core sample compressive strength test;
[0019] 4. This system uses monitoring components to synchronously record the stress and deformation of the core sample in the press, thereby providing a basis for the performance analysis of the core sample. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1This is a schematic diagram of the overall structure of the system;
[0021] Figure 2 This is a top view of the equipment inside the freight container;
[0022] Figure 3 Schematic diagram of the pallet structure;
[0023] Figure 4 Schematic diagram of the size measuring instrument structure;
[0024] Figure 5 Schematic diagram of the press structure;
[0025] Among them, there are freight container 1, pallet 2, dimension measuring instrument 3, press 4, robot gripper 5, scrap cart 6, programmable control cabinet 7, defective size platform 8; code scanning component 3.1, turntable 3.2, dust collection box 3.3, induction sensor 3.4, centering plate 3.5, sensor group 1 3.6, sensor group 2 3.7, sensor group 3.8, sensor group 4 3.9, pusher and cleaning component 1 3.21; lower pressure plate 4.1, pusher and cleaning component 2 4.2, drawer box 4.3, blanking plate 4.4, protective plate 4.5, vacuum cleaner 4.6, press oil source cabinet 4.7. DETAILED DESCRIPTION
[0026] The technical solution of the present utility model is described in detail below with reference to the embodiments and drawings.
[0027] like Figure 1 and 2 As shown, the system includes a freight container 1, in which equipment related to core sample testing is integrated, specifically including a tray 2 for placing multiple groups of core sample test pieces to be tested with identification codes affixed thereto, a dimension measuring instrument 3 for dimensional inspection of the core sample test pieces to be tested, a press 4 for compressive strength inspection of the core sample test pieces, a robot gripper 5, a scrap car 6, a programmable control cabinet 7, and a dimension defect platform 8.
[0028] Freight container 1 is used to secure all equipment related to core sample testing and facilitates the relocation and deployment of equipment. Pallet 2, sizing gauge 3, and press 4 are all located within the grasping range of a robotic gripper 5. The gripper 5 can rotate horizontally over a wide range and its vertical height can be adjusted based on the other equipment in the system (i.e., the position of the core sample on press 4, pallet 2, and sizing gauge 3, respectively).
[0029] like Figure 3 As shown, the core sample specimens to be tested are placed in a staggered manner in the tray 2, which is convenient for the robot gripper 5 to pick them up. The bottom of the tray 2 is opened to facilitate cleaning of debris in the tray 2.
[0030] The size measuring instrument 3 is used to measure the size of the core sample to be tested on the tray 2, such as Figure 4 As shown, the dimensional measuring instrument 3 is equipped with a code scanning component 3.1 and an inductive sensor 3.4. When the inductive sensor 3.4 detects a core sample on the code scanning platform, it activates the code scanning component 3.4 to scan the sample and identify the information contained therein (number, composition information, customer information, inspection date). The upper portion of the dimensional measuring instrument 3 is the inspection area, including a turntable 3.2 for placing the core sample. The bottom of the turntable 3.2 is equipped with a servo motor that drives it to rotate around its axis. The turntable 3.2 is provided with a hole smaller than the core sample, and a dust box 3.3 is located below the hole.
[0031] Centering plates 3.5 are symmetrically positioned on either side of turntable 3.2. Driven by a drive device (comprising a motor, a lead screw, and a slide rail, with the lead screw secured to the centering plates and driven by the motor to move on the slide rail), the centering plates 3.5 can move horizontally above turntable 3.2, i.e., simultaneously move laterally toward turntable 3.2, thereby pushing the core sample to be tested and aligning it with the center of turntable 3.2. The maximum stroke of the centering plates 3.5 is equal to the minimum distance between the two sets of centering plates 3.5, and the standard diameter of the core sample. When the centering plates 3.5 retract after reaching their maximum stroke, the core sample to be tested is considered aligned with the center of turntable 3.2.
[0032] On the dimensional measuring instrument 3, sensor groups 1 3.6 and 2 3.7 are installed on either side of the turntable 3.2. Sensor group 3 3.8 is mounted on the turntable 3.2 via a bracket, and sensor group 4 3.9 is mounted below the hole in the turntable 3.2 via a bracket. Once the core sample to be tested is aligned with the center of the turntable 3.2, the four sensor groups are activated to perform two fixed-point measurements on the core sample. The first initial fixed-point measurement is based on the core sample's alignment with the turntable 3.2. Sensor groups 1 3.6 and 2 3.7 obtain initial diameter data at the top, middle, and bottom heights of the core sample. Sensor groups 3 3.8 and 4 3.9 obtain initial height data for the core sample's top and bottom surfaces. After the tray 2 is rotated to 90° by the servo motor, a 90° fixed-point measurement is performed, and the 90° fixed-point diameter data of the upper, middle and lower heights of the core sample specimen are obtained by sensor group 1 3.6 and sensor group 2 3.7. The 90° fixed-point height data of the upper and lower planes of the core sample specimen are obtained by sensor group 3 3.8 and sensor group 4 3.9. The average of the diameter data and height data of the two measurements is calculated to obtain the average measured diameter and average height of the core sample specimen. At the same time, the flatness of the pressure-bearing surface and the bottom surface is calculated based on the measurement data on both sides of sensor group 3 3.8 and sensor group 4 3.9. Based on the average measured diameter and average height of the core sample specimen, and the flatness of the pressure-bearing surface and the bottom surface, the angle between the upper and lower end faces of the core sample specimen and the busbar is further calculated. (During the rotation of the turntable 3.2 (initial 0° to 90°), the four sensor groups can also take point data measurements one by one, which serves as the basic data for the core sample specimen big data fitting modeling.)
[0033] If the core specimen size has any of the following conditions, it is considered that the core specimen should not be subjected to the compression test, and the core specimen and all mortar specimens in the same group are placed on the bad size platform 8 by the robot gripper 5:
[0034] 1. The height-to-diameter ratio is less than 0.95 or 1.05;
[0035] 2. The non-perpendicularity between the end face and the axis exceeds 1°;
[0036] 3. Flatness exceeds 0.1mm;
[0037] 4. Any diameter differs from the average diameter by more than 1.5 mm.
[0038] If the core sample meets the required dimensions, the robot gripper 5 places it into the press 4 for compressive strength testing. Simultaneously, the sizing instrument 3 uses a pusher and cleaner assembly 3.21, located on one side of the turntable 3.2, to clean the top surface of the turntable 3.2. This assembly 3.21 comprises a motorized guide rail and a push rod. The motorized guide rail drives the push rod to move laterally across the top surface of the turntable 3.2, pushing any debris from the turntable 3.2 into the dust box 3.3.
[0039] The press 4 is a four-column press with a built-in oil source. Its lower portion is a cabinet housing the oil source. The upper portion of the press is the testing area, comprising a lower platen 4.1, where the core sample is placed. A second pusher and cleaning assembly 4.2 is mounted on one side of the lower platen 4.1, and a drawer 4.3 is located below the second pusher and cleaning assembly 4.2. A downwardly inclined blanking plate 4.4 is connected to the other side of the lower platen 4.1. The second pusher and cleaning assembly 4.2 includes a motorized guide rail and a push rod, which drives the push rod to move laterally on the lower platen 4.1.
[0040] After the test is completed, the pusher cleaning component 2 4.2 pushes the pressurized core sample residue and dust on the lower pressure plate 4.1 to the blanking plate 4.4. The residue and dust fall along the blanking plate 4.4 into the waste cart 6 for collection. Some residue and dust adhering to the pusher cleaning component 2 4.2 naturally fall into the drawer box 4.3 for collection. Protective plates 4.5 are installed on both sides of the lower pressure plate 4.1 to prevent debris from splashing during the pressure test and improve the safety of the operation. Figure 5 A dust collector 4.6 is also provided below the push cleaning assembly 2 4.2 for cleaning the dust in the lower pressing plate 4.1 and the air.
[0041] A monitoring assembly is provided at the rear of the press 4 for recording the stress changes during the compressive strength test of the core sample. A press oil source cabinet 4.7 is also provided on one side of the press 4.
[0042] The program control cabinet 7 is used to control the operation of the dimension measuring instrument 3 , the press 4 , and the robot gripper 5 , and to receive and analyze detection data from the dimension measuring instrument 3 and the press 4 .
[0043] System working principle:
[0044] (1) After the core sample to be tested is labeled with an identification code, it is placed on tray 2 in the order of testing.
[0045] (2) Start the robot gripper 5 and grab the core sample to be tested to the bottom of the code scanning component 3.1 of the size measuring instrument 3 for scanning and identification. After identification, place it on the turntable 3.2 of the size measuring instrument 3. If the code scanning fails, the robot gripper 5 rotates the core sample to be tested to improve the success rate of the code scanning.
[0046] (3) The centering plate 3.5 is activated by the driving device to push the core sample specimen to align it; the initial diameter data of the core sample specimen at the top, middle and bottom heights are obtained through sensor group 1 3.6 and sensor group 2 3.7, and the initial height data of the upper and lower planes of the core sample specimen are obtained through sensor group 3 3.8 and sensor group 4. After the tray 2 is rotated to 90° by the servo motor, a 90° fixed-point measurement is performed, and the 90° fixed-point diameter data of the core sample specimen at the top, middle and bottom heights are obtained through sensor group 1 3.6 and sensor group 2 3.7, and the 90° fixed-point height data of the upper and lower planes of the core sample specimen are obtained through sensor group 3 3.8 and sensor group 4. The average of the diameter and height data of the two measurements is calculated to obtain the average measured diameter and average height of the core sample specimen. At the same time, the flatness of the pressure-bearing surface and the bottom surface is calculated based on the measurement data on both sides of sensor group 3 3.8 and sensor group 4. Based on the average measured diameter and height of the core sample, as well as the flatness of the pressure-bearing and bottom surfaces, the angles between the upper and lower end surfaces of the core sample and the generatrix are further calculated. Based on the average measured diameter and height of the core sample, as well as the flatness of the pressure-bearing and bottom surfaces, and the angles between the upper and lower end surfaces and the generatrix, the core sample is further judged to determine whether it is qualified. If qualified, the robot gripper 5 clamps it to the center of the lower platen 4.1 of the press 4. If it is unqualified, the robot gripper 5 places all test pieces in the same group as the core sample on the defective size platform 8 for storage.
[0047] (4) Start the pressure head located above the lower pressure plate 4.1 on the press 4, apply a set downward pressure to the core sample to perform a compressive strength test, and the monitoring component synchronously records the force changes of the core sample during the compressive strength test process.
[0048] (5) After the test is completed (when the specimen is close to failure and deforms rapidly, adjust the pressure of the testing machine until the specimen fails, stop the test, and record the failure load at the same time), the pusher and cleaning component 2 4.2 on the press 4 pushes the residue and dust on the lower pressure plate 4.1 onto the blanking plate 4.4, and the residue and dust fall along the blanking plate 4.4 into the scrap cart 6 for collection.
[0049] (6) Performance analysis of core specimens: Based on the core specimen size test results, component information, deformation during the test, failure load, and the state of the core specimen after the test, analyze whether the maximum compressive strength of the core specimen meets the standard requirements.
Claims
1. A mobile core sample compressive strength testing system, characterized by: The invention comprises a freight container (1), wherein the freight container (1) is integrated with equipment related to core sample testing, including a tray (2) for placing multiple groups of core sample test pieces to be tested, a dimension measuring instrument (3) for performing dimension testing on the core sample test pieces to be tested, a press (4) for performing compressive strength testing on the core sample test pieces, and a robot gripper (5); wherein the positions of the core sample test pieces to be tested on the tray (2), the dimension measuring instrument (3), and the press (4) are all within the gripping range of the robot gripper (5); The dimension measuring instrument (3) comprises a turntable (3.2) for placing a core sample to be tested, the turntable (3.2) being rotatable about an axis and having sensor groups arranged around it for measuring the diameter and height of the core sample to be tested, including sensor group 1 (3.6) and sensor group 2 (3.7) for measuring diameter data at three heights of the core sample, namely, upper, middle and lower, and sensor group 3 (3.8) and sensor group 4 (3.9) for measuring initial height data of the upper and lower planes of the core sample.
2. The mobile core sample compressive strength testing system according to claim 1, characterized in that: The core sample to be tested is affixed with an identification code, and a code scanning component (3.1) for identifying information of the core sample to be tested is installed above the dimension measuring instrument (3).
3. The mobile core sample compressive strength testing system according to claim 2, characterized in that: An induction sensor (3.4) for detecting whether the core sample to be tested has been placed on the code scanning platform is also provided on one side of the turntable (3.2).
4. The mobile core sample compressive strength testing system according to claim 1, characterized in that: Centering plates (3.5) are provided on both sides of the turntable (3.2) for aligning the position of the core sample to be tested to the center of the turntable (3.2) by moving laterally.
5. The mobile core sample compressive strength testing system according to claim 1, characterized in that: A material pushing and cleaning component (3.21) for cleaning the upper surface of the turntable (3.2) is also provided on one side of the turntable (3.2).
6. The mobile core sample compressive strength testing system according to claim 1, characterized in that: The turntable (3.2) is provided with a hole smaller in size than the core sample to be tested, and a dust collection box (3.3) is provided below the hole.
7. The mobile core sample compressive strength testing system according to claim 1, characterized in that: The upper portion of the press (4) is a testing area, including a lower pressing plate (4.1) for placing a core sample test piece. A second material pushing and cleaning component (4.2) is installed on one side of the lower pressing plate (4.1), and a downwardly inclined blanking plate (4.4) is connected to the other side. Protective plates (4.5) are installed on the other two sides of the lower pressing plate (4.1).
8. The mobile core sample compressive strength testing system according to claim 7, characterized in that: A drawer box (4.3) for collecting the core sample residue and dust after the test is completed is provided below the second pushing and cleaning component (4.2).
9. The mobile core sample compressive strength testing system according to claim 7, characterized in that: A monitoring component for recording the stress changes during the compressive strength testing process of the core sample specimen is provided at the rear of the press (4).