Rigid-flexible mixed fiber recycled concrete bending test device

Abstract

The utility model provides a rigid-flexible mixed fiber recycled concrete bending test device which comprises a machine frame, a supporting frame is installed on the machine frame, a telescopic rod is arranged on the supporting frame, a compression roller is arranged at the telescopic end of the telescopic rod, two sets of installation bases are arranged on the machine frame in a sliding mode, and bearing rollers which are rotatably installed through installation shafts are arranged on the installation bases. A bearing platform is arranged on the bearing roller, a baffle is arranged on one side of the bearing platform, an indicating assembly is arranged on the rack in a sliding mode, the indicating assembly is connected with the mounting shaft so as to indicate the rotating angle of the mounting shaft, and a supporting assembly is arranged on the mounting base and connected with the bearing platform so as to drive the bearing platform to reset. When a test is carried out, the bearing roller can be driven to rotate through the bearing platform in the bending process of concrete, the mounting shaft is driven to rotate in the rotating process of the bearing roller, the rotating angle of the mounting shaft can be indicated through the indicating assembly, and therefore a worker can conveniently and visually know data obtained through the test.

Description

A rigid-flexible hybrid fiber-recycled concrete bending test device Technical Field

[0001] This utility model relates to the field of concrete testing technology, specifically to a bending test device for rigid-flexible hybrid fiber recycled concrete. Background Technology

[0002] Rigid-flexible fiber-recycled concrete has become a research and application hotspot due to its excellent mechanical properties and environmental characteristics. Bending tests, as an important means of evaluating the mechanical properties of rigid-flexible fiber-recycled concrete, can directly reflect the material's load-bearing capacity, deformation capacity, and failure characteristics under bending conditions, and are of key significance for optimizing concrete mix design and guiding engineering design.

[0003] However, existing concrete bending test devices have many limitations in practical applications. For example, Chinese utility model patent CN219224438U provides a concrete fracture toughness test device that performs a three-point bending experiment using a three-point bending mechanism to detect the fracture toughness of concrete. An automatic transport mechanism is used to automatically transport the concrete block to the three-point bending mechanism, enabling automatic transport and testing.

[0004] Traditional testing setups typically employ simple loading and support structures, lacking precise and intuitive bending measurement components when conducting bending tests on rigid-flexible fiber-recycled concrete specimens. Operators often need to manually measure deformation at different locations on the specimen using additional measuring tools, such as dial indicators, and obtain bending data through complex calculations. This method is not only cumbersome and inefficient, but also susceptible to human error during measurement, such as measurement position deviations and reading errors, making it difficult to guarantee the accuracy and reliability of the test data.

[0005] Therefore, there is an urgent need to develop an experimental device that can conveniently and accurately take readings in order to meet the demand for efficient and accurate experimental data in scientific research and engineering practice. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this utility model proposes a rigid-flexible hybrid fiber recycled concrete bending test device to solve the technical problem mentioned in the background art that existing concrete bending test devices are inconvenient to read the degree of concrete bending, thus making it impossible for staff to intuitively obtain test data.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a rigid-flexible hybrid fiber-recycled concrete bending test device, comprising:

[0008] The frame is equipped with a support frame, and the support frame is provided with a telescopic rod, the telescopic end of which is provided with a pressure roller;

[0009] The mounting base is provided in two sets, both of which are slidably mounted on the frame. The mounting base is provided with a receiving roller that can be rotatably mounted via a mounting shaft. The receiving roller is provided with a receiving platform, and a baffle is provided on one side of the receiving platform.

[0010] An indicator component, slidably mounted on the frame and connected to the mounting shaft, indicates the angle of rotation of the mounting shaft; and

[0011] A support component is disposed on the mounting base and connected to the receiving platform to drive the receiving platform to reset.

[0012] In a preferred embodiment, the indicating component includes:

[0013] An indicator seat is disposed on one side of the frame, and the mounting shaft is rotatably passed through the indicator seat along its axis;

[0014] A guide rail is provided on one side of the frame, and the indicator seat is slidably mounted on the guide rail; and

[0015] A pointer is mounted on the mounting shaft, and a scale line is provided on one side of the indicator seat.

[0016] In a preferred embodiment, the support assembly includes two sets of elastic elements, which are respectively disposed on both sides of the bottom of the receiving platform and abut against the mounting base.

[0017] In a preferred embodiment, an installation rod is slidably mounted on the receiving platform, a baffle is disposed at the end of the installation rod, a ratchet rack is disposed on one side of the installation rod, and a pawl connected by a torsion spring is hinged to the baffle, the end of the pawl being engaged with the ratchet rack.

[0018] In a preferred embodiment, the frame is further provided with a rotatably mounted bidirectional lead screw, and the two sets of mounting seats are respectively screwed to both ends of the bidirectional lead screw.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] When using this device, the concrete to be tested is placed on two sets of receiving platforms. By controlling the extension of the telescopic rod, the pressure roller is lowered to apply downward pressure to the middle section of the concrete, causing the concrete to bend. During the bending process, the concrete can drive the receiving roller to rotate through the receiving platform. As the receiving roller rotates, it drives the installation shaft to rotate. The angle of rotation of the installation shaft can be indicated by the indicating component, so that the staff can intuitively know the data obtained from the test. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0022] Figure 1 is a three-dimensional structural schematic diagram of a rigid-flexible hybrid fiber recycled concrete bending test device provided by this utility model.

[0023] Figure 2 is a schematic diagram of the installation structure of the receiving roller in the rigid-flexible hybrid fiber recycled concrete bending test device of this utility model.

[0024] Figure 3 is a schematic diagram of the frame structure in the rigid-flexible hybrid fiber recycled concrete bending test device of this utility model.

[0025] Figure label:

[0026] 1. Frame; 2. Two-way lead screw; 3. Guide rail; 4. Support frame; 5. Telescopic rod; 6. Pressure roller; 7. Mounting seat; 8. Receiving roller; 9. Mounting shaft; 10. Pointer; 11. Receiving platform; 12. Mounting rod; 13. Baffle; 14. Pawl; 15. Ratchet; 16. Indicator seat; 17. Scale line; 18. Elastic element. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0028] Example:

[0029] As shown in Figures 1 to 3, this utility model provides a bending test device for rigid-flexible hybrid fiber recycled concrete, including a frame 1, a support frame 4 installed on the frame 1, a telescopic rod 5 provided on the support frame 4, a pressure roller 6 provided at the telescopic end of the telescopic rod 5, two sets of slidingly installed mounting seats 7 provided on the frame 1, a receiving roller 8 rotatably installed on the mounting seat 7 via a mounting shaft 9, a receiving platform 11 provided on the receiving roller 8, and a baffle 13 provided on one side of the receiving platform 11.

[0030] When using the device, the concrete slab to be tested is placed on two sets of receiving platforms 11. By controlling the extension of the telescopic rod 5, the pressure roller 6 is driven to move downward. The baffle 13 limits the two ends of the concrete to prevent the concrete from shifting during the test and causing data deviation. When the pressure roller 6 presses the concrete and causes deformation, the receiving platform 11 drives the receiving roller 8 to rotate to adapt to the deformation of the concrete.

[0031] As shown in Figures 1 and 2, in this embodiment, the frame 1 is provided with an indicator component connected to the mounting shaft 9. The indicator component indicates the rotation angle of the mounting shaft 9. The indicator component includes an indicator seat 16 provided on one side of the frame 1. The mounting shaft 9 is rotatably mounted on the indicator seat 16 along its axis. A guide rail 3 is provided on one side of the frame 1. The indicator seat 16 is slidably mounted on the guide rail 3. A pointer 10 is provided on the mounting shaft 9. A scale line 17 is provided on one side of the indicator seat 16.

[0032] When the receiving roller 8 rotates, it drives the mounting shaft 9 to rotate, which in turn drives the pointer 10 to rotate. The reading on the scale line 17 of the pointer 10 can accurately determine the curvature of the concrete, thus allowing the staff to intuitively obtain the test data. Furthermore, the indicator seat 16 can slide along with the mounting seat 7, which facilitates the placement of concrete of different widths after sliding, thereby improving the applicability of the device.

[0033] As shown in Figures 1 and 2, in this embodiment, a support assembly is provided on the mounting base 7. The support assembly is connected to the receiving platform 11 to drive the receiving platform 11 to reset. The support assembly includes two sets of elastic elements 18, which are respectively disposed on both sides of the bottom of the receiving platform 11 and abut against the mounting base 7. During the rotation of the receiving platform 11, one set of elastic elements 18 is compressed. After the experiment is completed and no external force is applied, the receiving platform 11 can be controlled to reset under the action of the elastic elements 18, and the elastic elements 18 can be used to support the receiving platform 11, preventing it from overturning and facilitating concrete protection during the next test.

[0034] As shown in Figures 1 and 2, in this embodiment, a rotatable bidirectional lead screw 2 is also provided on the frame 1, and two sets of mounting seats 7 are respectively screwed to both ends of the bidirectional lead screw 2. A mounting rod 12 is slidably passed through the receiving platform 11, and a baffle 13 is provided at the end of the mounting rod 12. A ratchet rack 15 is provided on one side of the mounting rod 12, and a pawl 14 connected by a torsion spring is hinged on the baffle 13. The end of the pawl 14 is engaged with the ratchet rack 15.

[0035] The bearing range can be adjusted by rotating the bidirectional screw 2 to drive the two sets of mounting seats 7 to slide in opposite directions to accommodate concrete slabs of different sizes. The pawl 14 can also be moved to disengage from the ratchet rack 15, allowing the mounting rod 12 to slide on the bearing platform 11 to adjust the position of the baffle 13. Under the action of the torsion spring, the pawl 14 is locked back onto the ratchet rack 15 to lock the position of the mounting rod 12 in one direction. This makes it easier to fix the two ends of the concrete after placing it on the bearing platform 11, while keeping the concrete in a centered position, further improving the reliability of the test data.

[0036] The specific usage and beneficial effects of this utility model are as follows:

[0037] When using this device, the concrete to be tested is placed on two sets of receiving platforms 11. By controlling the extension of the telescopic rod 5, the pressure roller 6 is lowered to apply downward pressure to the middle section of the concrete, causing the concrete to bend. During the bending process, the concrete can drive the receiving roller 8 to rotate through the receiving platform 11. During the rotation of the receiving roller 8, the mounting shaft 9 is rotated. The angle of rotation of the mounting shaft 9 can be indicated by the indicating component, so that the staff can intuitively know the data obtained from the test.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above. Modifications or improvements can be made to this utility model, which is obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model fall within the scope of protection claimed by this utility model.

Claims

1. A rigid-flexible hybrid fiber-recycled concrete bending test device, characterized in that, The system includes: a frame (1) on which a support frame (4) is mounted, a telescopic rod (5) is mounted on the support frame (4), and a pressure roller (6) is mounted on the telescopic end of the telescopic rod (5); a mounting base (7) having two sets, both of which are slidably mounted on the frame (1), a receiving roller (8) rotatably mounted on the mounting base (7) via a mounting shaft (9), a receiving platform (11) on the receiving roller (8), and a baffle (13) on one side of the receiving platform (11); an indicating component slidably mounted on the frame (1) and connected to the mounting shaft (9) to indicate the angle of rotation of the mounting shaft (9); and a support component mounted on the mounting base (7) and connected to the receiving platform (11) to drive the receiving platform (11) to reset.

2. The rigid-flexible hybrid fiber-recycled concrete bending test device according to claim 1, characterized in that, The indicating component includes: an indicating seat (16) disposed on one side of the frame (1), with the mounting shaft (9) rotatably passing through the indicating seat (16) along its axis; a guide rail (3) disposed on one side of the frame (1), with the indicating seat (16) slidably disposed on the guide rail (3); and a pointer (10) disposed on the mounting shaft (9), with a scale line (17) provided on one side of the indicating seat (16).

3. The rigid-flexible hybrid fiber-recycled concrete bending test device according to claim 1, characterized in that: The support assembly includes two sets of elastic elements (18), which are respectively disposed on both sides of the bottom of the receiving platform (11) and abut against the mounting base (7).

4. The rigid-flexible hybrid fiber-recycled concrete bending test device according to claim 1, characterized in that: An installation rod (12) is slidably passed through the receiving platform (11). A baffle (13) is disposed at the end of the installation rod (12). A ratchet rack (15) is disposed on one side of the installation rod (12). A pawl (14) is hinged to the baffle (13) and connected by a torsion spring. The end of the pawl (14) is engaged with the ratchet rack (15).

5. The rigid-flexible hybrid fiber-recycled concrete bending test device according to claim 3, characterized in that: The frame (1) is also provided with a rotatable bidirectional lead screw (2), and the two sets of mounting seats (7) are respectively screwed to both ends of the bidirectional lead screw (2).

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