Loading device for detecting bending toughness of high-ductility concrete

Abstract

The utility model provides a high ductility concrete bending toughness detection loading device, which relates to the technical field of detection loading and comprises a displacement sensor, a detection column is fixedly mounted at the detection end of the displacement sensor, and support frames are arranged on two sides of a support column of the displacement sensor. The high-ductility concrete loading detection device has the advantages that a structure for supporting the high-ductility concrete is additionally arranged on a high-ductility concrete loading detection structure, and the supported high-ductility concrete can be extruded by the loading structure, so that the high-ductility concrete is bent under the action of pressure; a displacement detection structure is arranged in the middle of a structure for supporting the high-ductility concrete, displacement generated by bending of the high-ductility concrete under the pressure effect is detected through the displacement detection structure, and the bending toughness of the high-ductility concrete is judged according to the displacement amount of the high-ductility concrete; further, the bending toughness of the high-ductility concrete is detected, and the use convenience of the high-ductility concrete test equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection and loading, in particular to a high-ductility concrete bending toughness detection and loading device. Background Art

[0002] High ductility concrete is a new type of building material, and its excellent performance has been widely used in the construction field. With the widespread application of high ductility concrete, many standards for the performance of high ductility concrete have emphasized that flexural toughness refers to the resistance of high ductility concrete when subjected to bending loads, and is an important indicator for measuring the crack resistance of concrete. Therefore, flexural toughness is undoubtedly an important performance indicator of high ductility concrete. It characterizes the deformation capacity of concrete under bending stress and reflects the comprehensive performance of the internal microstructure and material properties of concrete.

[0003] Flexural toughness is one of the important indicators of high ductility concrete, which reflects the deformation capacity and crack propagation resistance of concrete when subjected to bending stress. Understanding the significance and influencing factors of equivalent flexural toughness and mastering its testing methods will help us better evaluate the performance of high ductility concrete, optimize structural design, and improve the safety and stability of buildings.

[0004] However, the existing high-ductility concrete testing equipment is not convenient for testing the bending toughness of high-ductility concrete and is relatively inconvenient to use. Utility Model Content

[0005] Therefore, the purpose of the utility model is to provide a high-ductility concrete bending toughness detection loading device to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the utility model on one hand provides a high-ductility concrete bending toughness detection and loading device, including a supporting base plate, a hydraulic lifting platform is fixedly installed on the top of the supporting base plate, a lifting support is fixedly installed on the top of the hydraulic lifting platform, a displacement sensor pillar is fixedly installed on the top of the lifting support, a displacement sensor is fixedly installed on the top of the displacement sensor pillar, a detection column is fixedly installed on the detection end of the displacement sensor, support frames are arranged on both sides of the displacement sensor pillar, a roller support is fixedly connected to the top of the support frame, a loading roller is rotatably connected to the top of the roller support, and a loading beam is arranged above the loading roller.

[0007] Preferably, any of the above schemes is that edge plates are fixedly mounted on both ends of the support base plate, and a gap is provided between the support base plate and the edge plates.

[0008] By adopting the above technical solution, the width of the bottom plate of the detection device is increased by using the edge plate, and auxiliary tools used for detection can be placed on the edge plate, so as to enhance the functionality of the bottom of the detection device.

[0009] Preferably, any of the above schemes comprises a hydraulic lifting platform comprising a hydraulic lifting column and a bearing platform, the hydraulic lifting column is fixedly mounted on the top surface of the supporting base plate by bolts, the bearing platform is fixedly mounted on the top end of the hydraulic lifting column, and the bearing platform and the lifting support are fixedly mounted.

[0010] The above technical solution is adopted: according to the needs of the detection loading, the hydraulic lifting column is controlled to extend and retract so that it drives the bearing platform to move up and down, the bearing platform is used to drive the lifting support to move up and down, and the height of the lifting support is adjusted to facilitate the adjustment of the height of the high-ductility concrete loading test.

[0011] Preferably, any of the above schemes is that a mounting plate is provided at the top end of the displacement sensor support, and the displacement sensor is fixedly mounted on the bottom of one end of the mounting plate.

[0012] The above technical solution is adopted: the displacement sensor pillar is driven to move up and down through the lifting support, so that the displacement sensor pillar drives the mounting plate to move up and down, and the mounting plate and the displacement sensor pillar form an L-shaped structure to facilitate the support and fixation of the displacement sensor.

[0013] Preferably, any of the above schemes is that the detection column and the mounting plate are movably connected, and the detection column is located below the loading beam.

[0014] The above technical solution is adopted: the loaded high-ductility concrete is detected through the detection column, so that the detection column transmits the detected pressure and displacement to the displacement sensor, and at the same time the movement of the detection column is guided by the mounting plate to ensure the stability of the detection of the detection column.

[0015] Preferably, any of the above schemes comprises a support plate and a connecting beam, wherein the support plate is fixedly mounted on both ends of the lifting support, and both ends of the top of the support plate are fixedly connected with connecting beams, and the connecting beams are located on both sides of the displacement sensor pillar.

[0016] The above technical solution is adopted: the roller bearing is supported by the support plate, and the connecting beam is used to connect the support plate, so as to enhance the stability of the support plate support and fixation, and ensure the strength of the support plate supporting the roller bearing.

[0017] Preferably, any of the above schemes is that the roller supports are located on both sides of the detection column, and loading rollers are provided at both ends of the bottom of the loading beam.

[0018] The above technical solution is adopted: the spacing and height between the roller support, the loading roller and the detection column are set to ensure the supporting stability of the roller support, the loading roller and the detection column for the high ductility concrete, and the high ductility concrete is loaded by controlling the up and down movement of the loading beam to ensure the stability of the loading detection of the high ductility concrete.

[0019] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0020] 1. A structure for supporting high-ductility concrete is added to the structure for loading and testing high-ductility concrete. The loading structure can be used to squeeze the supported high-ductility concrete, so that the high-ductility concrete bends under pressure. A displacement detection structure is set in the middle of the structure for supporting the high-ductility concrete. The displacement detection structure is used to detect the displacement caused by the bending of the high-ductility concrete under pressure. The bending toughness of the high-ductility concrete is judged according to the displacement of the high-ductility concrete, thereby realizing the detection of the bending toughness of the high-ductility concrete and improving the convenience of using the high-ductility concrete testing equipment.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a structural schematic diagram according to an embodiment of the utility model;

[0024] Figure 2 It is a front view structural schematic diagram according to an embodiment of the utility model;

[0025] Figure 3 It is a schematic diagram of a local structure according to an embodiment of the utility model;

[0026] Figure 4 It is a structural schematic diagram of a hydraulic lifting platform according to an embodiment of the utility model;

[0027] Among them: 1-support base plate, 2-hydraulic lifting platform, 21-hydraulic lifting column, 22-bearing platform, 3-lifting support, 4-displacement sensor support, 5-displacement sensor, 6-detection column, 7-support frame, 71-support plate, 72-connecting beam, 8-roller support, 9-loading roller, 10-loading beam, 11-edge plate, 12-mounting plate. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0029] like Figure 1-4 As shown, a high-ductility concrete bending toughness detection and loading device according to an embodiment of the utility model includes a supporting base plate 1, a hydraulic lifting platform 2 is fixedly installed on the top of the supporting base plate 1, a lifting support 3 is fixedly installed on the top of the hydraulic lifting platform 2, a displacement sensor pillar 4 is fixedly installed on the top of the lifting support 3, a displacement sensor 5 is fixedly installed on the top of the displacement sensor pillar 4, a detection column 6 is fixedly installed on the detection end of the displacement sensor 5, support frames 7 are arranged on both sides of the displacement sensor pillar 4, a roller support 8 is fixedly connected to the top of the support frame 7, a loading roller 9 is rotatably connected to the top of the roller support 8, and a loading beam 10 is arranged above the loading roller 9.

[0030] Preferably, any of the above solutions has edge plates 11 fixedly mounted on both ends of the support base plate 1 , and a gap is provided between the support base plate 1 and the edge plates 11 .

[0031] By adopting the above technical solution, the width of the bottom plate of the detection device is increased by using the edge plate 11, and auxiliary tools used for detection can be placed on the edge plate 11, so as to enhance the functionality of the bottom of the detection device.

[0032] Preferably, from any of the above schemes, the hydraulic lifting platform 2 includes a hydraulic lifting column 21 and a bearing platform 22, the hydraulic lifting column 21 is fixedly installed on the top surface of the supporting base plate 1 by bolts, the bearing platform 22 is fixedly installed on the top of the hydraulic lifting column 21, and the bearing platform 22 and the lifting support 3 are fixedly installed.

[0033] The above technical solution is adopted: according to the needs of detection loading, the hydraulic lifting column 21 is controlled to extend and retract so that it drives the bearing platform 22 to move up and down, and the bearing platform 22 is used to drive the lifting support 3 to move up and down, and the height of the lifting support 3 is adjusted to facilitate the adjustment of the height of the high-ductility concrete loading test.

[0034] Preferably, any of the above solutions is that a mounting plate 12 is provided at the top of the displacement sensor support 4 , and the displacement sensor 5 is fixedly mounted on the bottom of one end of the mounting plate 12 .

[0035] The above technical solution is adopted: the displacement sensor pillar 4 is driven to be lifted and lowered by the lifting support 3, so that the displacement sensor pillar 4 drives the mounting plate 12 to be lifted and lowered, and the mounting plate 12 and the displacement sensor pillar 4 form an L-shaped structure to facilitate the support and fixation of the displacement sensor 5.

[0036] Preferably, any of the above solutions is that the detection column 6 and the mounting plate 12 are movably connected, and the detection column 6 is located below the loading beam 10 .

[0037] The above technical solution is adopted: the loaded high-ductility concrete is detected by the detection column 6, so that the detection column 6 transmits the detected pressure and displacement to the displacement sensor 5, and at the same time, the movement of the detection column 6 is guided by the mounting plate 12 to ensure the stability of the detection of the detection column 6. The displacement sensor 5 is located on the center line and is in a line with the midpoint of the test machine base, the pedestal and the loading beam. The electrical signal output by the displacement sensor 5 is transmitted to the computer end of the test machine through a cable for continuous and automatic data collection, drawing a load-deflection curve, and further calculating the equivalent bending strength and bending toughness.

[0038] Preferably, from any of the above schemes, the support frame 7 includes a support plate 71 and a connecting beam 72, the support plate 71 is fixedly mounted on both ends of the lifting support 3, both ends of the top of the support plate 71 are fixedly connected with the connecting beam 72, and the connecting beam 72 is located on both sides of the displacement sensor pillar 4.

[0039] The above technical solution is adopted: the support plate 71 is used to support the roller support 8, and the connecting beam 72 is used to connect the support plate 71, so as to enhance the stability of the support plate 71 and ensure the strength of the support plate 71 in supporting the roller support 8.

[0040] Preferably, any of the above schemes is that the roller supports 8 are located on both sides of the detection column 6 , and loading rollers are provided at both ends of the bottom of the loading beam 10 .

[0041] The above technical solution is adopted: the spacing and height between the roller support 8, the loading roller 9 and the detection column 6 are set to ensure the supporting stability of the roller support 8, the loading roller 9 and the detection column 6 for high ductility concrete, and the high ductility concrete is loaded by controlling the up and down movement of the loading beam 10 to ensure the stability of the loading detection of high ductility concrete. The rollers are placed symmetrically relative to the displacement sensor 5, the rollers can roll freely, the diameter is 10mm, the spacing of the loading rollers 9 is one third of the spacing of the roller support 8, and the loading roller can also be designed to be fixed at one end. The needle tip of the displacement sensor 5 is flush with the top of the support roller, the top center of the loading beam 10 is connected to the crossbeam of the testing machine, and the bottom center of the base is connected to the base of the testing machine.

[0042] The utility model discloses a high ductility concrete bending toughness detection loading device, and its working principle is as follows:

[0043] According to the use requirements, the hydraulic lifting column 21 is controlled to extend and retract to drive the bearing platform 22 to move up and down, and the loading height is adjusted. After the adjustment is completed, the high-ductility concrete is placed on the top of the loading roller 9, and the loading beam 10 is controlled to extrude the high-ductility concrete, so that the detection column 6 detects the bending displacement of the high-ductility concrete and transmits the displacement to the displacement sensor 5.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] 1. A structure for supporting high-ductility concrete is added to the structure for loading and testing high-ductility concrete. The loading structure can be used to squeeze the supported high-ductility concrete, so that the high-ductility concrete bends under pressure. A displacement detection structure is set in the middle of the structure for supporting the high-ductility concrete. The displacement detection structure is used to detect the displacement caused by the bending of the high-ductility concrete under pressure. The bending toughness of the high-ductility concrete is judged according to the displacement of the high-ductility concrete, thereby realizing the detection of the bending toughness of the high-ductility concrete and improving the convenience of using the high-ductility concrete testing equipment.

Claims

1. A high-ductility concrete bending toughness testing loading device, comprising a supporting base plate (1), a hydraulic lifting platform (2) being fixedly mounted on the top of the supporting base plate (1), characterized in that: A lifting support (3) is fixedly mounted on the top of the hydraulic lifting platform (2), a displacement sensor support (4) is fixedly mounted on the top of the lifting support (3), a displacement sensor (5) is fixedly mounted on the top of the displacement sensor support (4), a detection column (6) is fixedly mounted on the detection end of the displacement sensor (5), support frames (7) are arranged on both sides of the displacement sensor support (4), a roller support (8) is fixedly connected to the top of the support frame (7), a loading roller (9) is rotatably connected to the top of the roller support (8), and a loading beam (10) is arranged above the loading roller (9).

2. A high ductility concrete bending toughness testing loading device as claimed in claim 1, characterized in that: Edge plates (11) are fixedly mounted on both ends of the supporting base plate (1), and a gap is provided between the supporting base plate (1) and the edge plates (11).

3. A high ductility concrete bending toughness testing loading device as claimed in claim 2, characterized in that: The hydraulic lifting platform (2) comprises a hydraulic lifting column (21) and a bearing platform (22); the hydraulic lifting column (21) is fixedly mounted on the top surface of the supporting base plate (1) by means of bolts; the bearing platform (22) is fixedly mounted on the top of the hydraulic lifting column (21); and the bearing platform (22) and the lifting support (3) are fixedly mounted.

4. A high ductility concrete bending toughness testing loading device as claimed in claim 3, characterized in that: A mounting plate (12) is provided at the top end of the displacement sensor support (4), and the displacement sensor (5) is fixedly mounted on the bottom of one end of the mounting plate (12).

5. A high ductility concrete bending toughness testing loading device as claimed in claim 4, characterized in that: The detection column (6) and the mounting plate (12) are movably connected, and the detection column (6) is located below the loading beam (10).

6. A high ductility concrete bending toughness testing loading device as claimed in claim 5, characterized in that: The support frame (7) comprises a support plate (71) and a connecting beam (72); the support plate (71) is fixedly mounted on two ends of the lifting support (3); the two ends of the top of the support plate (71) are fixedly connected to the connecting beam (72); the connecting beam (72) is located on both sides of the displacement sensor support (4).

7. A high ductility concrete bending toughness testing loading device as claimed in claim 6, characterized in that: The roller supports (8) are located on both sides of the detection column (6), and loading rollers are arranged at both ends of the bottom of the loading beam (10).

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