A device for testing the anchorage force of rebar in buildings

Abstract

The utility model discloses a kind of building plant bar anchoring force detection devices, belong to building structure detection technical field.Device includes support base, drive slide rail, push-pull mechanism and positioning mechanism.The positioning mechanism includes fixedly arranged support round frame, rotates and is housed in the rotating disc of support round frame, the power component of driving rotating disc rotation, T type sliding block sliding in rotating disc limiting groove, and with T type sliding block rotation connection and the positioning block of sliding and being provided in support round frame.Working, power component drives rotating disc, via T type sliding block will rotary motion be converted into the radial linear motion of positioning block.The utility model is through setting up automatic positioning mechanism, solved the problem of low accuracy of detection data in prior art due to manual clamping instability, can be realized to plant bar stick fast, stably clamped, guaranteed the axial application of pullout force, significantly improved the stability and data accuracy of detection.

Description

Technical Field

[0001] This utility model relates to the field of building structure testing technology, and in particular to a device for testing the anchoring force of rebar in buildings. Background Technology

[0002] Rebar anchoring, a reinforcement technique that adds steel bars to existing concrete structures, is widely used in building renovation and reinforcement projects. The anchoring quality of the rebar directly affects the safety and stability of the overall structure; therefore, on-site testing of the anchoring force after rebar anchoring is an essential quality control step.

[0003] Existing methods for testing the anchorage force of rebar typically employ a pull-out tester. The basic principle is to use a hydraulic device to apply an axial pull-out force to the implanted rebar, while simultaneously measuring the force value using a pressure gauge or sensor, until a preset load is reached or the rebar is pulled out, thereby evaluating the anchorage performance.

[0004] In the aforementioned testing process, the reinforcing bars need to be clamped in order to apply tensile force. However, existing clamping methods mostly rely on manually operated clamps. When operating on-site, it is difficult for operators to ensure that the clamps are precisely aligned with the axis of the reinforcing bars, and the tightness of the clamping is also subjective, which can easily lead to unstable clamping or initial eccentricity.

[0005] If there is initial eccentricity in the clamping, the force cannot be strictly transmitted along the axis of the rebar when a pull-out force is applied, resulting in an additional bending moment. This causes the rebar to sway or tilt during the stress process. This non-ideal stress state will seriously interfere with the accuracy of the test results, making the measured anchorage force value lower than it should be, and failing to truly reflect the anchorage performance of the rebar, thus affecting the correct assessment of the project quality.

[0006] Therefore, this utility model proposes a building rebar anchorage force testing device to address the shortcomings of existing technologies. Utility Model Content

[0007] In view of the problems existing in the building rebar anchorage force testing device, such as unstable manual clamping and inaccurate alignment, which leads to eccentric force on the rebar rod during the pulling process and low accuracy of the test data, this utility model aims to provide a building rebar anchorage force testing device with an improved structure that can achieve automated and stable clamping.

[0008] To achieve the above objectives, this utility model provides a building rebar anchoring force testing device, comprising: a support base; a drive slide rail fixedly connected to the support base; a push-pull mechanism slidably connected to the drive slide rail; and a positioning mechanism for positioning and clamping the rebar rod.

[0009] The positioning mechanism includes a support circular frame fixedly mounted on a support base as its structural reference, and a rotating disk rotatably housed within the support circular frame, with an annular limiting groove on the rotating disk; the positioning mechanism also includes a power component for driving the rotating disk to rotate, a T-shaped sliding block slidably mounted within the limiting groove, and a positioning block.

[0010] Furthermore, one end of the positioning block is fixedly connected to the T-shaped sliding block, and the other end slides through the supporting circular frame and extends out to clamp the rebar rod; the rotating disk is driven by the power component, and the rotating disk converts the rotational motion into the radial linear motion of the positioning block through the limiting groove and the T-shaped sliding block, thereby forming an innovative combination structure that can automatically and stably clamp the rebar rod.

[0011] Preferably, the push-pull mechanism includes a U-shaped support frame a and a U-shaped support frame b fixedly connected to the base of the push-pull mechanism in parallel with each other, and a cylinder whose two ends are respectively clamped and fixed by the U-shaped support frame a and the U-shaped support frame b; the push-pull mechanism also includes a magnetic block connected to the end of the piston rod of the cylinder, the structure of which allows the cylinder to be stably suspended and drive the magnetic block to apply a pulling force.

[0012] Preferably, the positioning mechanism further includes a limiting component, which includes a limiting base plate fixed to the top of the supporting circular frame, and a limiting bolt that can slide and lock in a limiting plate groove extending radially from the limiting base plate; the limiting component effectively limits the top of the rebar rod by adjusting the position of the limiting bolt, and together with the clamping structure in the middle and lower part, it constitutes a multi-point constraint system.

[0013] Preferably, the device further includes a detection mechanism, which includes a scanner fixedly positioned and facing the anchoring rod, a display for displaying data, and a transmission line electrically connecting the scanner and the display. The detection mechanism enables the datafication and visualization of the detection process, improving the accuracy and intuitiveness of the readings.

[0014] Preferably, the detection mechanism also has a housing, an opening plate rotatably connected to the housing, and a sliding plate that slides horizontally to the inner wall of the housing; the structure cleverly utilizes the internal space of the equipment to form a pull-out storage platform, enhancing the practicality of the device.

[0015] Preferably, the bottom of the magnetic block is provided with a permanent magnet or electromagnet for detachably adsorbing onto the top of the anchoring rod; this connection method is simpler and faster to operate than mechanical clamps, and can quickly complete the preparation work before pulling.

[0016] Preferably, the motion conversion method of the positioning mechanism is as follows: when the motor drives the rotating disk to rotate, the rotating disk drives the T-shaped sliding block to move in the groove through the limiting groove, and the T-shaped sliding block then drives the positioning block to generate radial linear reciprocating motion; this purely mechanical transmission method has a reliable structure, precise motion, and ensures the repeatability of clamping and releasing actions.

[0017] This utility model has the following beneficial effects: 1. This utility model, by setting up an automated positioning mechanism that works in concert with a motor, a rotating disk, a T-shaped sliding block and a positioning block, can quickly and stably clamp the bottom and middle of the rebar rod automatically, and form multi-point constraints with the top limiting component. This solves the problem of unstable posture of the rebar rod under tension caused by inaccurate manual positioning and uneven clamping force in the prior art, and achieves the technical effect of significantly improving the stability of the detection process and the accuracy of data.

[0018] 2. This utility model integrates an automated positioning mechanism, a cylinder-driven push-pull mechanism, and a data-driven detection mechanism into one unit, realizing an automated process from clamping the rebar rod, applying tension, to data acquisition and display. It solves the problems of existing detection equipment having scattered functions, relying on manual operation, and having cumbersome work processes, and achieves the technical effect of greatly improving overall detection efficiency and reducing manual labor intensity.

[0019] 3. This utility model, by setting up a detection mechanism consisting of a scanner, a transmission line and a display, can collect and visualize key data in real time during the pulling process. It solves the problems of traditional detection methods that rely on mechanical instruments, have errors due to manual reading, and cannot trace the process. It achieves the technical effect of improving the intuitiveness of process monitoring and ensuring the accuracy and reliability of data. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0021] Figure 1 This is a three-dimensional schematic diagram of a building rebar anchorage force testing device proposed in this utility model. Figure 2 This is a schematic diagram of the U-shaped support frame a of the building rebar anchorage force testing device proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of point B in the middle; Figure 5This is a schematic diagram of the limiting plate of a building rebar anchoring force testing device proposed in this utility model.

[0022] In the diagram: 1. Support base; 2. Drive slide rail; 3. Push-pull mechanism; 31. U-shaped support frame a; 32. U-shaped support frame b; 33. Cylinder; 34. Magnetic block; 4. Rebar rod; 5. Positioning mechanism; 51. Support round frame; 52. Power component; 521. Motor; 522. Rotating disk; 53. Limiting groove; 54. Supporting limiting post; 55. T-shaped sliding block; 56. Positioning block; 57. Limiting component; 571. Limiting plate groove; 572. Limiting bolt; 573. Limiting base plate; 6. Detection mechanism; 61. Scanner; 62. Transmission line; 63. Display; 64. Opening plate; 65. Slide plate. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0024] The first embodiment of this application is as follows: Reference Figures 1 to 5 This utility model provides a building rebar anchorage force testing device, which aims to solve the problems of unstable clamping and inaccurate positioning of the rebar rod 4 in the prior art, resulting in poor repeatability and low accuracy of the test data.

[0025] like Figure 1 As shown, the building rebar anchorage force testing device includes a support base 1, a drive slide rail 2 fixedly connected to the support base 1, and a push-pull mechanism 3 slidably connected to the drive slide rail 2. The push-pull mechanism 3 is used to apply a pull-out force to the rebar rod 4. The device also includes a positioning mechanism 5, which is installed on the support base 1 and used to automatically position and clamp the rebar rod 4. Specifically, the positioning mechanism 5 includes a support circular frame 51 as its structural reference, which is fixedly set on the support base 1. A rotating disk 522 is rotatably housed within the support circular frame 51. The rotating disk 522 has an annular limiting groove 53; the power assembly 52 includes a motor 521, which drives the rotating disk 522 to rotate; the protruding part of the T-shaped sliding block 55 is slidably disposed in the limiting groove 53, and its main body is located above the rotating disk 522; one end of the positioning block 56 is fixedly connected to the main body of the T-shaped sliding block 55, and the other end of the positioning block 56 is slidably disposed through the side wall of the supporting circular frame 51, and can extend into the internal cavity of the supporting circular frame 51 to clamp or release the rebar rod 4.

[0026] like Figure 1 and Figure 2As shown, to apply a pulling force to the rebar rod 4, the push-pull mechanism 3 includes a U-shaped support frame a31 and a U-shaped support frame b32, which are fixedly connected to the base of the push-pull mechanism 3 in parallel. The two ends of the cylinder 33 are clamped and fixed by the U-shaped support frame a31 and the U-shaped support frame b32 respectively, so that the main body of the cylinder 33 is stably suspended between the two support frames. The magnetic block 34 is connected to the piston rod end of the cylinder 33. The bottom of the magnetic block 34 is provided with a permanent magnet or electromagnet for detachably adsorbing onto the top of the rebar rod 4. When the piston rod of the cylinder 33 moves upward, the magnetic block 34 synchronously drives the rebar rod 4 to move upward, thereby applying a pulling force.

[0027] Reference Figure 1 and Figure 5 To achieve data-driven monitoring of the testing process, the device also includes a testing mechanism 6; the testing mechanism 6 includes a scanner 61 fixedly mounted and facing the rebar rod 4, used to collect data during the pulling process; a display 63 is used to display the data collected by the scanner 61 in real time; a transmission line 62 electrically connects the scanner 61 and the display 63 to realize signal transmission; the testing mechanism 6 also has a housing, on which an opening plate 64 is rotatably connected, and a sliding plate 65 is provided inside the housing. The sliding plate 65 is slidably connected to the inner wall of the housing in the horizontal direction. After opening the opening plate 64 and pulling out the sliding plate 65, a storage space for storing tools or accessories can be formed.

[0028] As a preferred embodiment, to securely limit the top of the rebar rod 4, please refer to... Figure 3 and Figure 4 The positioning mechanism 5 also includes a limiting component 57; the limiting component 57 includes a limiting base plate 573 fixed to the top of the supporting circular frame 51, and a limiting plate groove 571 extending radially on the limiting base plate 573; the limiting bolt 572 is slidably fitted in the limiting plate groove 571 and can be locked by means of threads, etc.; by adjusting the position of the limiting bolt 572 in the limiting plate groove 571, the distance between it and the top of the rebar rod 4 can be changed to adapt to different specifications of rebar rod 4 and apply effective top constraint.

[0029] As another preferred embodiment, in order to provide stable axial support to the bottom of the rebar rod 4, please refer to... Figure 3 The positioning mechanism 5 also includes a support limiting column 54 fixed to the bottom center of the support circular frame 51; the top surface of the support limiting column 54 is used to provide axial support to the bottom of the rebar rod 4 before testing, so as to ensure that the initial position of the rebar rod 4 is accurate.

[0030] As a further preferred embodiment, in order to realize the clamping and releasing action of the rebar rod 4, the number of positioning blocks 56 is set to two, and the two positioning blocks 56 are symmetrically arranged on both sides of the supporting circular frame 51; when the motor 521 drives the rotating disk 522 to rotate, the rotating disk 522 drives the two T-shaped sliding blocks 55 to move synchronously in the groove through the limiting groove 53, and the T-shaped sliding blocks 55 in turn drive the two positioning blocks 56 to generate radial linear reciprocating motion, thereby realizing the action of clamping or releasing in opposite directions.

[0031] The working principle is as follows: During testing, the rebar rod 4 is first placed in the positioning mechanism 5, with its bottom contacting the top surface of the support limiting post 54. Then, the motor 521 in the power assembly 52 is activated, driving the rotating disk 522 to rotate. Since the T-shaped sliding block 55 is slidably engaged in the limiting groove 53 of the rotating disk 522, and the positioning block 56 is rotatably connected to the T-shaped sliding block 55 and slides through the supporting circular frame 51, the circular motion of the rotating disk 522 is converted into the radial linear motion of the positioning block 56 through this series of transmission structures. The two positioning blocks 56 move towards each other, thus firmly clamping the lower middle part of the rebar rod 4. Simultaneously, the limiting bolt 572 at the top is adjusted to effectively limit the top of the rebar rod 4, thus completing the stable fixation of the rebar rod 4 under test.

[0032] After positioning is completed, the push-pull mechanism 3 is activated. The piston rod of cylinder 33 moves upward, driving the magnetic block 34, which has been adsorbed onto the top of the rebar roller 4, to move upward synchronously, applying a stable and continuous pulling force to the rebar roller 4. Throughout the pulling process, the scanner 61 of the detection mechanism 6 continuously collects the force or displacement data of the rebar roller 4 and sends the data to the display 63 in real time via the transmission line 62 for monitoring by the operator. Through the synergistic effect of the positioning mechanism 5 and the push-pull mechanism 3, the pulling force is effectively ensured to be applied along the axial direction of the rebar roller 4, avoiding measurement errors caused by eccentric force, thus solving the problem of low detection accuracy caused by unstable clamping in the prior art.

[0033] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A device for testing the anchorage force of rebar in building construction, comprising: Support base; A drive slide rail is fixedly connected to the support base; A push-pull mechanism, slidably connected to the drive slide rail, is used to apply a pulling force to the rebar rod; characterized in that... It also includes a positioning mechanism, which is mounted on the support base and used to position and clamp the rebar rod; the positioning mechanism includes: A supporting circular frame is fixedly mounted on the supporting base; A rotating disk is rotatably housed within the supporting circular frame, and the rotating disk is provided with an annular limiting groove; The power unit includes a motor that drives the rotating disk to rotate; The T-shaped sliding block is slidably disposed within the limiting groove; And a positioning block, one end of which is fixedly connected to the T-shaped sliding block, and the other end of which is slidably inserted through the supporting circular frame and extends out to clamp the rebar rod.

2. The rebar anchorage force testing device according to claim 1, characterized in that, The push-pull mechanism includes: a U-shaped support frame a and a U-shaped support frame b, which are fixedly connected to the base of the push-pull mechanism in parallel with each other; a cylinder, whose two ends are respectively clamped and fixed by the U-shaped support frame a and the U-shaped support frame b; and a magnetic block, which is connected to the piston rod end of the cylinder.

3. The rebar anchorage force testing device according to claim 1, characterized in that, The positioning mechanism further includes a limiting component, which includes: a limiting base plate fixed to the top of the supporting circular frame, the limiting base plate having a limiting plate groove extending radially therefrom; and a limiting bolt, the limiting bolt being slidably engaged in and locked within the limiting plate groove, for limiting the top of the rebar rod.

4. The building rebar anchorage force testing device according to claim 1, characterized in that, The building rebar anchorage force testing device further includes a testing mechanism, which includes: a scanner fixedly mounted and facing the rebar rod; a display for displaying data collected by the scanner; and a transmission line electrically connecting the scanner and the display.

5. The rebar anchorage force testing device according to claim 4, characterized in that, The detection mechanism also has a housing, on which an opening plate is rotatably connected; inside the housing, there is also a sliding plate, which is slidably connected to the inner wall of the housing in a horizontal direction to form a storage space.

6. The rebar anchorage force testing device according to claim 2, characterized in that, The bottom of the magnetic block is provided with a permanent magnet or electromagnet for detachably attaching to the top of the anchoring rod, thereby applying a pulling force to the anchoring rod when the cylinder is activated.

7. The rebar anchorage force testing device according to claim 1, characterized in that, When the motor drives the rotating disk to rotate, the rotating disk drives the T-shaped sliding block to move within the groove through the limiting groove. The T-shaped sliding block then drives the positioning block to generate radial linear reciprocating motion, thereby clamping or releasing the anchoring rod.

8. The rebar anchorage force testing device according to claim 1, characterized in that, The positioning mechanism also includes a support limiting column fixed to the center of the bottom of the support circular frame, and the top surface of the support limiting column is used to provide axial support for the bottom of the rebar rod.

Images