A multifunctional concrete compressive strength testing device

Abstract

This invention discloses a multifunctional concrete compressive strength testing device, including a testing platform and a robotic arm mounted on the testing platform. The claw of the robotic arm is equipped with a pressure testing component, which is used to connect a pressure plate, a pressure hammer, and a measuring rod respectively. The pressure testing component includes a mounting base and a connector detachably connected to the mounting base. The connector connects the pressure plate, the pressure hammer, and the measuring rod. A pressure sensor is provided in the pressure testing component.

Description

Technical Field

[0001] This invention relates to the field of concrete index testing technology, specifically to a multifunctional concrete compressive strength testing device. Background Technology

[0002] Concrete quality is reflected in concrete indicators such as compressive strength, flexural strength, slump, frost resistance, and impermeability. Concrete used in different applications has different quality requirements, and its indicators are tested according to the corresponding national standards to ensure compliance.

[0003] In existing technologies, compressive strength is tested using a universal testing machine, flexural strength is generally tested using a pressure tester, slump is generally tested after concrete is manually poured into a bucket for molding, frost resistance is generally tested using a freeze-thaw tester, and other indicators, such as concrete setting time, are tested using a penetration resistance meter. In other words, the testing devices currently used to test concrete data indicators are relatively limited in function.

[0004] Among these data indicators, compressive strength, flexural strength, and setting time are mainly calculated by collecting pressure data. However, in existing technologies, different instruments are used to detect pressure data. Therefore, using the same testing instrument to detect different required pressure data can reduce equipment costs and has certain economic significance. Summary of the Invention

[0005] The purpose of this invention is to provide a multifunctional concrete compressive strength testing device, which has a replaceable testing head, enabling one device to test more pressure data, thus solving the problems in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A multifunctional concrete compressive strength testing device includes a testing platform and a robotic arm mounted on the testing platform. The claw of the robotic arm is equipped with a pressure testing component, which is used to connect a pressure plate, a pressure hammer, and a measuring rod respectively.

[0008] The pressure detection assembly includes a mounting base and a connector detachably connected to the mounting base. The connector connects a pressure plate, a pressure hammer, and a measuring rod. The pressure detection assembly is equipped with a pressure sensor.

[0009] As a preferred embodiment, the mounting base has a slot with a circular radial cross section, a pressure sensor is installed in the slot, a limiting ring is provided at the bottom of the slot, a vertical limiting groove is provided on the limiting ring, the pressure sensor is located above the limiting ring, and a limiting strip is provided on the upper outer wall of the connector head, the limiting strip is matched with the limiting groove, and the length of the limiting strip is less than the distance between the pressure sensor and the limiting ring.

[0010] As a preferred embodiment, the top of the limiting ring, at a position 90° offset from the limiting groove, is also provided with a placement slot.

[0011] In a preferred embodiment, the mounting base is provided with a first mounting groove, the connector includes a first connector, an electromagnetic component is provided in the first mounting groove, and a metal component is provided on the first connector; the first connector matches the first mounting groove; the first connector includes a receiving groove and a plug, the plug is vertically inserted into the receiving groove, a limiting device is provided between the plug and the receiving groove; a pressure sensor is provided between the plug and the receiving groove.

[0012] As a preferred embodiment, the mounting base is further provided with a second mounting groove, in which a metal conductive plate is provided; the connector also includes a second connector, in which a metal conductive plate is provided; the second connector matches the second mounting groove; a pressure sensor is provided in the first connector, and the pressure sensor is connected to the metal conductive plate on the second connector via a wire.

[0013] As a preferred embodiment, the first mounting slot is located at the center of the mounting base.

[0014] As a preferred embodiment, the testing platform is provided with a support position adjustment component in a mirror-symmetrical manner. The support position adjustment component includes a transversely arranged electric guide rail, a longitudinally arranged electric guide rail on the moving block of the transversely arranged electric guide rail, and a support on the moving block of the longitudinally arranged electric guide rail.

[0015] As a preferred method, the testing platform is also equipped with positioning components; there are four positioning components, which are evenly distributed around the circumference of the positioning point; the positioning components include electric guide rails, and the moving blocks of the electric guide rails are equipped with positioning plates.

[0016] As a preferred embodiment, the testing platform is equipped with three testing head boxes, each with a vertical placement opening. Different testing heads are placed in their respective testing head boxes, and are placed vertically. The placement of the testing head boxes is on the movement trajectory of the robotic arm's gripper. The testing heads include a pressure plate testing head, a probe testing head, and a hammer testing head. The pressure plate testing head is formed by connecting a pressure plate to the bottom of the connector, the probe testing head is formed by connecting a probe to the bottom of the connector, and the hammer testing head is formed by connecting a hammer to the bottom of the connector.

[0017] Compared with existing technologies, it has the following advantages:

[0018] In this embodiment, different pressure data are obtained by detachably connecting different detection heads. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of Example 1;

[0020] Figure 2This is a magnified view of point B;

[0021] Figure 3 A top view of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of Example 2;

[0023] Figure 5 This is a magnified view of point A.

[0024] The reference numerals in the attached drawings are as follows: 1-Detection platform, 2-Fixed arm, 3-Rotating arm, 4-Telescopic arm, 5-Motor, 6-Rotating bearing, 7-Internal gear ring, 8-Pressure plate, 9-Mounting base, 10-Plug-in, 11-Pressure sensor, 12-Electromagnetic component, 13-Metal conductive sheet, 14-Receiving groove, 15-Limiting groove, 16-Limiting strip, 17-Electric guide rail, 18-Support, 19-Positioning plate, 20-Detection head box. Detailed Implementation

[0025] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multifunctional concrete compressive strength testing device. The invention will be further described in detail below with reference to embodiments.

[0026] Example 1

[0027] like Figures 1-2 As shown, a multifunctional concrete compressive strength testing device includes a testing platform 1, a robotic arm, a mounting base 9, and a testing head.

[0028] The testing platform 1 is mounted on the ground via a support frame. The testing platform 1 is equipped with a robotic arm, which includes a fixed arm 2, a rotating arm 3, a support arm, and a telescopic arm 4. The fixed arm 2 is vertically fixed to the testing platform, and its top has a placement slot for a motor 5. The upper radial section of the fixed arm 2 is circular. The bottom of the rotating arm 3 has an axially arranged slot with a circular radial section. The upper part of the fixed arm 2 is inserted into the bottom of the rotating arm 3, and the fixed arm 2 and the rotating arm 3 are connected by a rotary bearing 6.

[0029] The inner wall of the rotating arm 3 is also provided with an internal gear ring 7. The output shaft of the motor 5 is inserted into the slot, and the gear connected to the output shaft of the motor 5 meshes with the internal gear ring 7. When the motor 5 is working, it drives the rotating arm 3 to rotate relative to the fixed arm 2.

[0030] The top of the fixed arm 2 is connected to one end of a horizontally arranged support arm, and the bottom of the other end of the support arm is provided with the top of a telescopic arm 4 (the telescopic arm 4 is an electric telescopic frame structure or a cylinder structure, and the bottom of the telescopic arm 4 is connected to a mounting base 9. The mounting base 9 is used for detachable connection with the detection head).

[0031] In this embodiment, the structure of the mounting base 9 is as follows: the mounting base 9 has a cylindrical slot with an open bottom at its center. A pressure sensor 11 is provided at the top of the cylindrical slot, and a limiting ring is provided on the lower inner wall of the cylindrical slot. Two vertically arranged limiting grooves 15 are provided on the inner wall of the limiting ring.

[0032] Pressure sensor 11 is electrically connected to the controller on the re-detection platform 1.

[0033] The detection head includes a pressure plate detection head, a probe detection head, and a hammer detection head; the pressure plate detection head is formed by connecting the pressure plate 8 to the bottom of the connector, the probe detection head is formed by connecting the probe to the bottom of the connector, and the hammer detection head is formed by connecting the hammer to the bottom of the connector.

[0034] The connector is cylindrical, with two vertical limiting strips 16 on its upper part. The limiting strips 16 match the limiting grooves 15. Specifically, the limiting strips 16 of the connector correspond to the limiting grooves 15 of the mounting base 9, allowing the connector to move upward and insert into the slot of the mounting base 9. When the limiting strips 16 have completely passed through the limiting grooves 15, the connector is rotated, causing the limiting strips 16 and the limiting grooves 15 to misalign. At this point, the limiting strips 16 are blocked by the top of the limiting ring and cannot detach from the mounting base 9, but there is still a gap space for upward displacement.

[0035] The outer diameter of the cylindrical connector is slightly smaller than the inner diameter of the limiting ring.

[0036] When used to test the compressive strength of concrete, the pressure plate 8 and its detection head are mounted on the mounting base 9. Then, the telescopic arm 4 moves, causing the pressure plate 8 to move downwards at a certain speed, while the concrete sample to be tested is placed on the testing platform 1. The pressure plate 8 and its detection head continue to press down until the concrete sample breaks. During the pressing process, the force simultaneously causes the connector to press against the pressure sensor 11, thereby the pressure sensor 11 detects the breaking pressure of the concrete sample. Its feedback controller displays the data, allowing the inspector to obtain the data to calculate the compressive strength.

[0037] When used to test the flexural strength of concrete, the pressure hammer test head is mounted on the mounting base 9. Then, the telescopic arm 4 moves, causing the pressure hammer to move downwards at a certain speed. At this time, both ends of the concrete sample to be tested are placed on the supports 18 of the testing platform 1. The pressure hammer test head continues to press down until the concrete sample breaks. During the downward pressing process, the force simultaneously causes the connector to press against the pressure sensor 11, thereby the pressure sensor 11 detects the breaking pressure of the concrete sample. Its feedback controller displays the data, allowing the inspector to obtain the data to calculate the flexural strength.

[0038] When used to test the setting time of concrete, the probe head is installed on the mounting base 9. Then, the telescopic arm 4 moves, causing the probe to move downwards at a certain speed. At this time, the concrete sample to be tested is placed in the molding mold and then on the testing platform 1. The probe is pressed into the concrete, and the pressure sensor 11 reads the data. According to the concrete setting time testing standard, the probe is moved in an arc by the rotation of the rotating arm 3, allowing for multi-point testing of the concrete. After multiple tests at specified intervals, the setting time of the concrete is calculated.

[0039] In this embodiment, a pressure sensor 11 is provided in the mounting base 9, and the mounting base 9 is detachably connected to the detection head, so that different detection heads can be replaced when detecting different data. The structure of the mounting base 9 and the detection head allows for a certain amount of movement clearance after the detection head is installed, ensuring that the pressure sensor 11 is subjected to force.

[0040] Furthermore, in this embodiment, a placement slot is provided at the top of the aforementioned limiting ring, which is offset from the limiting groove 15 by 90°. When the connector rotates 90° and falls under the action of gravity, the bottom of the limiting strip 16 falls into the placement slot for further limiting. When the detection head needs to be replaced, the detection head is slightly lifted upwards and then rotated 90° so that the limiting strip 16 and the limiting groove 15 are aligned again, allowing the connector to move downwards, thereby detaching the connector from the mounting base 9.

[0041] Further, such as Figure 3 As shown, in this embodiment, on the detection platform 1, the positions of the support 18 are mirror-symmetrically arranged on both sides of the axis of the rotating arm 3. The positions of the support 18 include a horizontally arranged electric guide rail 17, a longitudinally arranged electric guide rail 17 on the moving block of the horizontally arranged electric guide rail 17, and a support 18 on the moving block of the longitudinally arranged electric guide rail 17.

[0042] In flexural strength testing, there are generally three types of test specimens: a standard prism concrete specimen of 150mm x 150mm x 600mm, a standard prism concrete specimen of 150mm x 150mm x 500mm, and a non-standard prism concrete specimen of 100mm x 100mm x 400mm. Therefore, in this embodiment, a support 18 position adjustment assembly is provided to adjust the position of support 18 to accommodate the three different types of concrete specimens.

[0043] Furthermore, in this embodiment, the horizontally arranged electric guide rail 17 is embedded in the detection platform 1, and the top of its moving block is flush with the detection platform 1.

[0044] Furthermore, in this embodiment, the detection platform 1 is also provided with a positioning component. The positioning component has four parts evenly distributed around the positioning point, and the positioning component is offset from the position adjustment component of the support 18. The positioning component includes an electric guide rail 17 embedded in the detection platform 1, and a positioning plate 19 is provided on its moving block. The moving block of the positioning component is also flush with the detection platform 1.

[0045] During the compressive strength test, the test sample is placed between the positioning plates 19, and the test sample is positioned in the center by the operation of the positioning plates 19. Then the telescopic arm 4 drives the test head to press down for testing.

[0046] Example 2

[0047] like Figures 4-5 As shown, in this embodiment, the structure of the mounting base 9 and the connecting base differs from that in Embodiment 1. The mounting base 9 has a first mounting groove with a slotted bottom at its center, and an electromagnetic component 12 is installed at the top of the first mounting groove. A second mounting groove with a slotted bottom is located at the bottom of the mounting base 9 and on one side of the first mounting groove. A metal conductive sheet 13 is installed at the top of the second mounting groove.

[0048] The connector includes a first connector and a second connector. The first connector has a metal component at its top, which, after being inserted into a first mounting slot, activates the electromagnetic component 12 within the first mounting slot, generating a magnetic force that stably connects the first connector to the first mounting slot. The second connector has a metal conductive plate 13 at its bottom. When the second connector is inserted into a second mounting slot, and the first connector is stably connected to the first mounting slot, the conductive plate 13 on the second connector contacts and conducts electricity with the metal conductive plate 13 in the second mounting slot.

[0049] The first connector has a receiving groove 14 with a notch at the bottom. A plug-in 10 is housed within the receiving groove 14, and a pressure sensor 11 is positioned between the plug-in 10 and the top of the receiving groove 14. A limiting protrusion is provided on the outer wall of the plug-in 10. A matching limiting recess is provided on the inner wall of the first connector, and the limiting protrusion of the plug-in 10 is located within the limiting recess, maintaining a relatively stable connection between the plug-in 10 and the first connector. The bottom of the plug-in 10 is used to connect to structures such as a pressure plate 8, a pressure hammer, or a measuring rod. The pressure sensor 11 is connected to a metal conductive plate 13 inside the second connector via a wire.

[0050] The limiting protrusion and the limiting concave ring have a certain gap in the axial direction of the plug-in 10, so that the plug-in 10 has a certain amount of room to move within the receiving groove 14, but cannot be removed from the receiving groove 14. In this way, it can be ensured that the pressure sensor 11 is not under force when no force is applied to the sample to be tested, and the pressure sensor 11 is under force when force is applied to the sample to be tested.

[0051] Furthermore, the testing platform 1 is equipped with three testing head boxes 20, each with a vertical placement opening. Different testing heads are placed in their respective boxes 20, arranged vertically. The placement of the testing head boxes 20 is along the movement trajectory of the mounting base 9 connected to the robotic arm. The robotic arm moves the mounting base 9 to each testing head box 20. By controlling the conduction of the electromagnetic component 12, the telescopic arm 4 rises and falls, allowing the testing head to be placed into the testing head box 20. The electromagnetic component 12 can also be used to attract and connect the testing head. Therefore, automatic testing head replacement can be achieved using a controller.

[0052] The present invention can be well implemented according to the above embodiments. It is worth noting that, based on the above structural design, even if some non-substantial modifications or refinements are made to the present invention to solve the same technical problem, the essence of the technical solution adopted is still the same as that of the present invention, and therefore it should also be within the protection scope of the present invention.

Claims

1. A multifunctional concrete compressive strength testing device, comprising a testing platform and a robotic arm mounted on the testing platform, characterized in that, The robotic arm's gripper is equipped with a pressure detection component, which is used to connect the pressure plate, the pressure hammer, and the measuring rod respectively. The pressure testing assembly includes a mounting base and a connector detachably connected to the mounting base, the connector connecting a pressure plate, a pressure hammer, and a probe; The pressure detection assembly includes a pressure sensor; The mounting base has a slot with a circular radial section. A pressure sensor is located at the top of the slot, and a limiting ring is located at the bottom of the slot. The limiting ring has a vertical limiting groove. The pressure sensor is located above the limiting ring. A limiting strip is located on the upper outer wall of the connector. The limiting strip matches the limiting groove, and the length of the limiting strip is less than the distance between the pressure sensor and the limiting ring.

2. The multifunctional concrete compressive strength testing device according to claim 1, characterized in that, At the top of the limiting ring, at a position 90° off from the limiting groove, there is also a placement slot; when the connector rotates 90° and falls under the action of gravity, the bottom of the limiting strip falls into the placement slot for further limiting.

3. The multifunctional concrete compressive strength testing device according to claim 1, characterized in that, The testing platform is equipped with a support position adjustment component in a mirror-symmetrical manner. The support position adjustment component includes a horizontally arranged electric guide rail, a longitudinally arranged electric guide rail on the moving block of the horizontally arranged electric guide rail, and a support on the moving block of the longitudinally arranged electric guide rail.

4. The multifunctional concrete compressive strength testing device according to claim 1, characterized in that, The testing platform is also equipped with positioning components; there are four positioning components, which are evenly distributed around the circumference of the positioning point; the positioning components include electric guide rails, and the moving blocks of the electric guide rails are equipped with positioning plates.

5. The multifunctional concrete compressive strength testing device according to claim 1, characterized in that, The testing platform has three testing head boxes, each with a vertical placement opening. Different testing heads are placed in their respective boxes, positioned vertically along the movement trajectory of the robotic arm's gripper. The testing heads include a pressure plate testing head, a probe testing head, and a hammer testing head. The pressure plate testing head is formed by connecting a pressure plate to the bottom of the connector, the probe testing head is formed by connecting a probe to the bottom of the connector, and the hammer testing head is formed by connecting a hammer to the bottom of the connector.

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