Reinforced concrete drawing and slipping performance detection device
The device for testing the pull-out slip properties of reinforced concrete using hydraulic control and multi-point displacement sensors solves the problems of complex operation and limited accuracy in traditional methods, enabling accurate measurement of the slip properties of steel bars and concrete, and improving the reliability and accuracy of the test.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-10
AI Technical Summary
Traditional methods for testing the pull-out slip properties of reinforced concrete are complex to operate, require a lot of manual intervention, and have limited testing accuracy, making it difficult to meet the ever-increasing precision requirements.
A detection device was designed, comprising a hydraulic telescopic rod, a lifting block, a pull-out beam, and a displacement testing component. By uniformly applying hydraulic control force, combined with a high-strength connecting rope and multi-point displacement sensors, the device enables accurate measurement of the slippage performance of steel bars and concrete.
It improves the reliability and accuracy of testing, reduces human error, provides scientific and precise data support, and ensures the accuracy of performance analysis of reinforced concrete structures.
Smart Images
Figure CN224109227U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to reinforced concrete structure performance detection technical field, and specifically is a reinforced concrete pullout slip performance detection device. BACKGROUND
[0002] As a common building material, the structural performance of reinforced concrete, especially the bonding performance between steel bars and concrete, directly affects the strength and durability of the entire structure. In practical applications, the bonding force between steel bars and concrete must be able to withstand changes in different loads and environmental conditions, especially in the case of stress or vibration, the slip performance between steel bars and concrete directly determines the reliability of the structure. Therefore, accurately measuring the pullout slip performance between steel bars and concrete is crucial for assessing the safety of the structure.
[0003] Currently, the traditional reinforced concrete pullout slip performance detection method generally relies on manual measurement and force sensors. These methods mostly use manual or semi-automatic equipment for pullout testing, and common equipment includes universal testing machines and manual measurement equipment, etc. However, these traditional methods have certain deficiencies, first of all, the operation in the testing process is complex, and manual intervention is high, which is easy to introduce errors; secondly, the testing precision is limited by the measurement precision of the equipment and manual judgment, which cannot meet the increasing precision requirements. SUMMARY
[0004] The purpose of the embodiments of the utility model is to provide a reinforced concrete pullout slip performance detection device, aiming at solving the technical problems mentioned in the background art.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0006] A reinforced concrete pullout slip performance detection device, comprising a mounting panel, a hydraulic telescopic rod is installed on the upper surface of the mounting panel, and a second fixing hoop is arranged on the lower surface of the mounting panel on both sides; the surfaces of the two second fixing hoops are detachably connected with a first fixing hoop;
[0007] One end of the hydraulic telescopic rod is provided with a lifting block, and the surface of the lifting block is connected with a pullout beam, the surface of the pullout beam is sleeved with a connecting rope, the surfaces of the mounting panel on both sides are detachably connected with a support frame, and the lifting block is slidingly connected between the two support frames.
[0008] Further, first threaded holes with the same caliber are formed in the surfaces of the second fixing hoop and the first fixing hoop, first fastening bolts are engagedly connected in the first threaded holes, and first fixing nuts are sleeved on the outer sides of the first fastening bolts.
[0009] Further, the surface of the lifting block is provided with an arc-shaped groove, and the arc of the arc-shaped groove is matched with the arc of the drawing beam.
[0010] Further, the connecting rope is made of high-strength fiber material.
[0011] Further, the surface of the support frame and the mounting panel is provided with a second threaded hole with a consistent caliber, the inside of the second threaded hole is engaged with a second fastening bolt, and the outside of the second fastening bolt is sleeved with a second fixing nut.
[0012] Further, the steel reinforced concrete drawing and sliding performance detection device further comprises a displacement testing assembly.
[0013] The displacement testing assembly comprises a first displacement reference frame, which is arranged on the side surface of the lifting block, and a first displacement sensor is arranged on the surface of the hydraulic telescopic rod, and the position of the first displacement sensor corresponds to the position of the first displacement reference frame.
[0014] The side surface of the first fixing hoop is connected with a mounting frame, the surface of the mounting frame is provided with a second displacement sensor, the surface of the first fixing hoop is provided with a second displacement reference frame, and the position of the second displacement sensor corresponds to the position of the second displacement reference frame.
[0015] The steel reinforced concrete drawing and sliding performance detection device has the following beneficial effects:
[0016] The steel reinforced concrete drawing and sliding performance detection device comprises a lifting block, a drawing beam, a support frame, a mounting panel, a first fixing hoop, a second fixing hoop, a hydraulic telescopic rod, a first displacement sensor and a second displacement sensor. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a structural schematic view of a steel reinforced concrete drawing and sliding performance detection device.
[0018] Figure 2 It is a structural schematic view of a steel reinforced concrete drawing and sliding performance detection device and a displacement testing assembly.
[0019] In the diagram: 1. First fixing hoop; 2. Second fixing hoop; 3. Mounting panel; 4. Support frame; 5. Hydraulic telescopic rod; 6. Lifting block; 7. Pull-out crossbeam; 8. Connecting rope; 9. Embedded steel bar hook; 10. Arc-shaped groove; 11. First displacement sensor; 12. First displacement reference frame; 13. Mounting frame; 14. Second displacement sensor; 15. Second displacement reference frame; 16. Concrete block. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0021] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0022] like Figure 1 As shown in the figure, the present invention provides a test device for pull-out and slippage performance of reinforced concrete, including a mounting panel 3. A hydraulic telescopic rod 5 is installed on the upper surface of the mounting panel 3, and a second fixing hoop 2 is provided on both sides of the lower surface of the mounting panel 3. The surfaces of the two second fixing hoops 2 are detachably connected to a first fixing hoop 1, and a concrete block 16 is clamped between the first fixing hoop 1 and the second fixing hoop 2. A pre-embedded steel bar hook 9 is provided in the concrete block 16.
[0023] One end of the hydraulic telescopic rod 5 is provided with a lifting block 6, and the surface of the lifting block 6 is connected to a pull beam 7. The surface of the pull beam 7 is fitted with a connecting rope 8. Both sides of the surface of the mounting panel 3 are detachably connected to support frames 4, and the lifting block 6 is slidably connected between the two support frames 4.
[0024] In one embodiment of this utility model, the working process of the reinforced concrete pull-out slip performance testing device is as follows:
[0025] First, the concrete block 16 is fixed by the first fixing hoop 1 and the second fixing hoop 2. At this time, the steel bar hooks 9 embedded in the concrete block 16 are also locked and ready to receive subsequent pull-out forces.
[0026] Next, the connecting rope 8 is looped onto the pre-embedded steel bar hook 9 to ensure a firm connection between the pull-out beam 7 and the steel bar hook.
[0027] After the entire device is fixed and ready, the hydraulic telescopic rod 5 begins to operate. The hydraulic telescopic rod 5 applies power, causing the lifting block 6 to move up and down, which in turn drives the pulling beam 7 to pull. The pulling beam 7 transmits force through the connecting rope 8 and applies it to the reinforcing steel, causing slippage between the reinforcing steel and the concrete.
[0028] With the movement of the lifting block 6, the pulling beam 7 is horizontally pulled in a fixed position. During the test, the sliding connection between the lifting block 6 and the support frame 4 ensures the stability and uniformity of the device. When the hydraulic telescopic rod 5 drives the lifting block 6 to gradually move downward, the entire system transmits force to make the steel bar produce relative displacement, and the force is stable and uniform.
[0029] Through the above working process, the hydraulic telescopic rod 5 can accurately control the movement of the lifting block 6, thereby ensuring the uniform application of pulling force and avoiding experimental errors that may be caused by uneven load. In addition, the stable connection between the pulling beam 7 and the connecting rope 8 ensures that the force transmission does not deviate, making the slip measurement during the test more accurate. The sliding design of the lifting block 6 and the support frame 4 enhances the flexibility and adaptability of the device, further improving the reliability and operational convenience of the entire experimental system.
[0030] In this embodiment, the surface of the second fixed hoop 2 and the first fixed hoop 1 is provided with a first threaded hole with the same caliber. The inside of the first threaded hole is engaged with a first fastening bolt, and the outside of the first fastening bolt is sleeved with a first fixed nut.
[0031] The advantage of this design is that the connection strength between the first fixed hoop 1 and the second fixed hoop 2 can be accurately adjusted and fixed through threaded connection. The cooperation of the first threaded hole and the fastening bolt enables the entire device to withstand a larger pulling force without loosening during the test, thereby improving the fixing reliability of the concrete block 16. During the experiment, the combination of the first fastening bolt and the first fixed nut ensures the stability of the connection part, avoiding the deviation of the device or data errors caused by poor fixation. In addition, this structure makes the assembly and disassembly of the device simple and convenient, and can be flexibly adjusted and maintained according to actual needs.
[0032] In this embodiment, the surface of the lifting block 6 is provided with an arc-shaped groove 10, and the arc of the arc-shaped groove 10 is matched with the arc of the pulling beam 7.
[0033] The cooperation between the arc-shaped groove 10 and the pulling beam 7 can realize more stable and uniform force transmission. Due to the matching of the two arcs, the movement of the pulling beam 7 on the lifting block 6 is smoother, avoiding experimental errors caused by force deviation or uneven action. This design effectively reduces the interference of friction force, ensures the stability of the pulling process, and improves the accuracy of the slip measurement between the steel bar and the concrete. At the same time, this structure can reduce the local stress concentration phenomenon that may occur in the device, reduce the wear of the parts, and prolong the service life of the equipment.
[0034] In this embodiment, the connecting rope 8 is made of high-strength fiber material. High-strength fiber material has excellent tensile strength and wear resistance, and can withstand a large load during the pull-out test without breaking or deforming. The use of high-strength fiber material ensures that the connecting rope 8 remains stable under long-term, high-strength test conditions, reducing performance degradation due to material aging or wear. Through this material, the overall safety and reliability of the device have been effectively improved.
[0035] In addition, the connecting rope 8 can also be made of other high-strength materials, such as steel wire rope, polymer fiber (such as polyester fiber, nylon fiber), or carbon fiber material, etc. These materials also have good tensile strength and durability, and can be selected according to different needs and use scenarios. The selection of different materials can ensure stable force transmission while optimizing cost, weight, and use environment, etc.
[0036] In this embodiment, the surface of the support frame 4 and the mounting panel 3 is provided with a second threaded hole with the same caliber, the inside of the second threaded hole is engaged with a second fastening bolt, and the outside of the second fastening bolt is sleeved with a second fixing nut.
[0037] Through the cooperation of the second threaded hole and the second fastening bolt, the support frame 4 and the mounting panel 3 can be firmly connected, ensuring the stability and safety of the entire device. During the test, the support frame 4 and the mounting panel 3 serve as the main load-bearing components, bearing the force generated during the pull-out process, so the reliability of their fixation needs to be ensured through bolt connection. The cooperation of the second fastening bolt and the second fixing nut can effectively prevent the bolt from loosening and prevent the connection part from moving due to external forces, ensuring the accuracy of the test data.
[0038] In addition, similar connection methods can also use other fixation methods, such as using welding, riveting, or special fasteners instead of the combination of bolts and nuts. These alternatives can be selected according to the actual use environment and needs. For example, in situations that require quick disassembly or adjustment, bolt connection is more flexible; while in high-strength load or long-term use environment, welding or other fixation methods may provide higher stability and durability.
[0039] As shown in FIG. 1, in one embodiment of the present application, the reinforced concrete pull-out and slip performance detection device further comprises a displacement amount testing assembly. Figure 2 The displacement amount testing assembly comprises a first displacement reference frame 12, which is arranged on the side surface of the lifting block 6. The surface of the hydraulic telescopic rod 5 is provided with a first displacement sensor 11, and the position of the first displacement sensor 11 corresponds to the position of the first displacement reference frame 12.
[0040] The displacement amount testing assembly comprises a first displacement reference frame 12, which is arranged on the side surface of the lifting block 6. The surface of the hydraulic telescopic rod 5 is provided with a first displacement sensor 11, and the position of the first displacement sensor 11 corresponds to the position of the first displacement reference frame 12.
[0041] The side of the first fixed hoop 1 is connected with a mounting rack 13, and the surface of the mounting rack 13 is mounted with a second displacement sensor 14; the surface of the first fixed hoop 1 is provided with a second displacement reference rack 15, and the position of the second displacement sensor 14 corresponds to the position of the second displacement reference rack 15.
[0042] In the embodiment, the displacement testing assembly of the reinforced concrete pullout slip performance testing device realizes accurate monitoring of the slip amount between the steel bars and the concrete through cooperation of the first displacement reference rack 12, the first displacement sensor 11, the second displacement sensor 14 and the second displacement reference rack 15.
[0043] In the testing process, the hydraulic telescopic rod 5 drives the lifting block 6 to move in the vertical direction, thereby driving the pullout beam 7 to perform the pullout operation. The first displacement reference rack 12 is installed on the side of the lifting block 6, and the first displacement sensor 11 is installed on the surface of the hydraulic telescopic rod 5. When the lifting block 6 moves, the first displacement sensor 11 monitors the displacement of the block 6 and obtains the displacement data in real time, and the relative displacement between the steel bars and the concrete can be calculated through the data, thereby accurately measuring the slip amount of the steel bars.
[0044] At the same time, the second displacement sensor 14 is installed on the side of the first fixed hoop 1 and cooperates with the second displacement reference rack 15 to provide accurate displacement data, and the measurement data of the first displacement sensor 11 are combined, and finally complete data support is provided for analysis.
[0045] This design enables the displacement testing to be performed synchronously. Through the arrangement of the upper and lower displacement racks, the relative displacement between the lifting block 6 and the fixed hoop 1 is obtained in the manner that the displacement racks move with the loading, and the displacement data of the steel bars can be obtained through post-processing. The first displacement sensor and the second displacement sensor monitor the displacement of different parts, respectively, effectively avoiding the data error caused by a single sensor, and ensuring the data comprehensiveness and accuracy in the testing process.
[0046] The benefits of this design are that not only the testing accuracy is improved, but also the overall analysis of the steel bar slip is realized. Through cooperation of the upper and lower displacement racks, the limitations caused by the traditional single monitoring point are avoided, the integrity of the entire pullout testing process is ensured, and the displacement data can be collected in real time, reducing the influence of manual measurement error. This accurate displacement monitoring provides strong data support for further structure optimization, ensuring the safety and reliability of the reinforced concrete structure design.
[0047] The above merely describes preferred embodiments of the utility model, and is not intended to limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A reinforced concrete pullout slip performance detection device comprising a mounting panel (3), characterized in that, The upper surface of the mounting panel (3) is provided with a hydraulic telescopic rod (5), and the lower surface of the mounting panel (3) is provided with a second fixing hoop (2) on both sides. One end of the hydraulic telescopic rod (5) is provided with a lifting block (6), and the surface of the lifting block (6) is connected with a pulling beam (7), the surface of the pulling beam (7) is sleeved with a connecting rope (8), and the surface of the mounting panel (3) is detachably connected with a supporting frame (4) on both sides, and the lifting block (6) is slidingly connected between the two supporting frames (4).
2. The reinforced concrete pull-slip performance detection device according to claim 1, characterized in that, The surface of the second fixing hoop (2) and the first fixing hoop (1) is provided with a first threaded hole with the same caliber, the inside of the first threaded hole is engaged with a first fastening bolt, and the outside of the first fastening bolt is sleeved with a first fixing nut.
3. The reinforced concrete pull-slip performance detection device according to claim 1, characterized in that, The surface of the lifting block (6) is provided with an arc-shaped groove (10), and the curvature of the arc-shaped groove (10) is matched with the curvature of the pulling beam (7).
4. The reinforced concrete pull-slip performance detection device according to claim 1, characterized in that, The connecting rope (8) is made of high-strength fiber material.
5. The reinforced concrete pull-slip performance detection device according to claim 1, characterized in that, The surface of the supporting frame (4) and the mounting panel (3) is provided with a second threaded hole with the same caliber, the inside of the second threaded hole is engaged with a second fastening bolt, and the outside of the second fastening bolt is sleeved with a second fixing nut.
6. The reinforced concrete pull-slip performance detection device according to claim 1, characterized in that, The steel reinforced concrete pulling and sliding performance detection device further comprises a displacement testing assembly; The displacement testing assembly comprises a first displacement reference frame (12), and the first displacement reference frame (12) is arranged on the side surface of the lifting block (6), the surface of the hydraulic telescopic rod (5) is provided with a first displacement sensor (11), and the position of the first displacement sensor (11) corresponds to the position of the first displacement reference frame (12); The side surface of the first fixing hoop (1) is connected with a mounting frame (13), and the surface of the mounting frame (13) is provided with a second displacement sensor (14), and the surface of the first fixing hoop (1) is provided with a second displacement reference frame (15), and the position of the second displacement sensor (14) corresponds to the position of the second displacement reference frame (15).