Novel anchorage bar pulling detection device

Abstract

The utility model discloses a novel anchorage bar drawing detection device, including the machine case, the machine case is through the guide rod group swing joint with the central bearing plate, be provided with the sliding slot on the central bearing plate, a plurality of fastening device are slidably arranged in the sliding slot, the rear end of central bearing plate is through the connecting device external interface tension machine, the fastening device includes the mobile terminal of sliding arrangement in the sliding slot, the front end of mobile terminal is connected with the bending fastening subassembly. The utility model discloses a bending fastening subassembly is set up, and the end of the steel bar is bent, and then the steel bar after bending is fixed using the rope card, so that the steel bar can be effectively fastened and fixed, and the reliability of drawing test is ensured. Not only can the unevenly distributed structure of steel bar clamping be realized, but also different thickness structures can be simultaneously adapted, and the original multiple disassembly and multiple drawing test tasks can be completed through one drawing test, saving time and effort.

Description

Technical Field

[0001] This utility model relates to the field of concrete anchorage structure bearing capacity testing technology, specifically a novel rebar pull-out testing device. Background Technology

[0002] Chinese utility model patent CN222379483U discloses a design including a chassis with a central support plate movably connected to it via a guide rod assembly. The central support plate has a sliding groove, within which several fastening devices are slidably mounted. The rear end of the central support plate is connected to an external tensile testing machine via a connecting device. The fastening devices themselves can slide and adjust their position, allowing for clamping of steel bars of varying thicknesses. This enables anchorage and pull-out testing of multiple specifications and positions with a single test, eliminating the need for repeated disassembly and assembly, saving time and effort.

[0003] The above-mentioned patents have the following shortcomings: Adjustable fasteners consisting of screws, fastening plates, and adjusting nuts are used to connect reinforcing bars. After the reinforcing bars are fixed, they are straight. Therefore, the fixing is achieved by the friction between the screws, fastening plates, and adjusting nuts and the reinforcing bars. However, the fixing strength of the reinforcing bars is insufficient, and they are prone to detachment during strong pulling. Utility Model Content

[0004] The purpose of this invention is to provide a novel rebar pull-out testing device. By setting up a bending and fastening component, the end of the rebar is bent, and then the bent rebar is fixed with a rope clamp, which effectively and securely fixes the rebar and ensures the reliability of the pull-out test.

[0005] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A novel rebar pull-out testing device includes a chassis. A central bearing plate is movably connected to the chassis via a guide rod assembly. A sliding groove is provided on the central bearing plate, and several fastening devices are slidably disposed within the sliding groove. A tensile testing machine is externally connected to the rear end of the central bearing plate via a connecting device. Each fastening device includes a movable terminal slidably disposed within the sliding groove, and a bending fastening assembly is connected to the front end of the movable terminal. The bending fastening assembly enables the bending and fixing of the ends of the rebar. The bending fastening assembly includes a bearing and a rope clamp. The bearing includes an outer ring and an inner ring. Two limiting blocks are welded on the inner ring. A power rod is welded on the outer ring. A bending pin is welded on the power rod. The end of the power rod away from the outer ring is connected to a moving terminal through a bridging rod.

[0006] Preferably, the connecting device includes a connecting block installed at the rear end of the central bearing plate, and the two rear ends of the connecting block are connected to the connecting columns of the tensile testing machine via chains.

[0007] Preferably, a spring damper is also provided at the bottom end of the guide rod assembly inside the chassis.

[0008] Preferably, a ring is welded to one end of the power rod away from the outer ring, one end of the bridging rod has a hook, the bridging rod is hung on the ring by the hook, and the other end of the bridging rod is welded to the moving terminal.

[0009] Preferably, the two limiting blocks are parallel to each other.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model sets up a bending and fastening component to bend the end of the steel bar, and then uses rope clips to fix the bent steel bar, thereby effectively and firmly fixing the steel bar and ensuring the reliability of the pull-out test.

[0011] 2. This utility model can not only achieve the clamping of multiple unevenly distributed steel bars, but also adapt to structures of different thicknesses. A single pull-out test can complete the task that originally required multiple disassembly and pull-out tests, saving time and effort. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of the present invention; Figure 2 Provided by this utility model Figure 1 A magnified view of a portion of the image; Figure 3 An enlarged view of the bending fastening assembly provided by this utility model.

[0013] In the diagram: 1. Chassis; 2. Guide rod assembly; 3. Central bearing plate; 4. Sliding groove; 5. Tensile testing machine; 6. Moving terminal; 7. Bridging rod; 9. Bending fastening assembly; 91. Outer ring; 92. Inner ring; 93. Power rod; 94. Limiting block; 95. Circular ring; 96. Bending pin; 10. Connecting block; 11. Chain; 12. Connecting column; 13. Spring buffer; 14. Rope clamp; 15. Rebar. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0015] This utility model provides a novel rebar pull-out detection device. Please refer to [link / reference]. Figure 1-3The device includes a chassis 1, on which a central bearing plate 3 is movably connected via a guide rod assembly 2. A sliding groove 4 is provided on the central bearing plate 3, and several fastening devices are slidably arranged in the sliding groove 4. A tensile testing machine 5 is externally connected to the rear end of the central bearing plate 3 via a connecting device. The fastening device includes a movable terminal 6 slidably arranged in the sliding groove 4, and a bending fastening assembly 9 is connected to the front end of the movable terminal 6. The bending and fastening assembly 9 is used to perform bending and fixing operations on the end of the reinforcing bar 15. The bending fastening assembly 9 includes a bearing and a rope clamp 14. The bearing includes an outer ring 91 and an inner ring 92. Two limiting blocks 94 are welded on the inner ring 92 and are parallel to each other. A power rod 93 is welded on the outer ring 91, and a bending pin 96 is welded on the power rod 93. The end of the power rod 93 away from the outer ring 91 is connected to the moving terminal 6 through a bridging rod 7.

[0016] The connecting device includes a connecting block 10 installed at the rear end of the central bearing plate 3, and the two rear ends of the connecting block 10 are connected to the connecting column 12 of the tensile testing machine 5 by chains 11.

[0017] A spring buffer 13 is also provided at the bottom of the guide rod assembly 2 inside the housing 1 to facilitate buffering and shock absorption and protect the equipment.

[0018] The end of the power rod 93 away from the outer ring 91 is welded with a circular ring 95. One end of the bridging rod 7 has a hook, and the bridging rod 7 is hung on the circular ring 95 by the hook. The other end of the bridging rod 7 is welded to the movable terminal 6.

[0019] In practical use, the end of the rebar 15 is passed between two limiting blocks 94, and the outer ring 91 is rotated by the power rod 93. The end of the rebar 15 is bent by the bending pin 96, and the rebar is fixed by the rope clip 14. First, the machine box 1 is moved close to the rebar 15, and the position of the fastening device is adjusted by sliding the machine to adjust the position. The bridging rod 7 is hung on the ring 95 by the hook. The central bearing plate 3 is connected to the connecting column 12 by the connecting block 10 and the chain 11. The central bearing plate 3 is pulled by the tensile testing machine 5 to perform a tensile test. The bearing capacity can be analyzed by observing the scene and the data from the tensile testing machine 5. Anchoring pull-out of multiple specifications and positions can be achieved with only one test, without repeated disassembly and assembly, saving time and effort.

[0020] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A novel rebar pull-out testing device, comprising a housing (1), wherein a central bearing plate (3) is movably connected to the housing (1) via a guide rod assembly (2), a sliding groove (4) is provided on the central bearing plate (3), and a plurality of fastening devices are slidably arranged in the sliding groove (4), and a tensile testing machine (5) is externally connected to the rear end of the central bearing plate (3) via a connecting device, characterized in that: The fastening device includes a movable terminal (6) that is slidably disposed in the sliding groove (4). The front end of the movable terminal (6) is connected to a bending fastening assembly (9). The bending and fastening assembly (9) is used to perform bending and fixing operations on the end of the reinforcing bar (15). The bending fastening assembly (9) includes a bearing and a rope clamp (14). The bearing includes an outer ring (91) and an inner ring (92). Two limit blocks (94) are welded on the inner ring (92). A power rod (93) is welded on the outer ring (91). A bending pin (96) is welded on the power rod (93). The end of the power rod (93) away from the outer ring (91) is connected to a moving terminal (6) via a bridging rod (7).

2. The novel rebar pull-out detection device according to claim 1, characterized in that, The connecting device includes a connecting block (10) installed at the rear end of the central bearing plate (3), and the two rear ends of the connecting block (10) are connected to the connecting column (12) of the tensile testing machine (5) by chains (11).

3. The novel rebar pull-out detection device according to claim 1, characterized in that, A spring buffer (13) is also provided at the bottom of the guide rod assembly (2) inside the chassis (1).

4. The novel rebar pull-out detection device according to claim 1, characterized in that, The power rod (93) has a ring (95) welded to one end away from the outer ring (91), and the bridging rod (7) has a hook at one end. The bridging rod (7) is hung on the ring (95) by the hook, and the other end of the bridging rod (7) is welded to the moving terminal (6).

5. The novel rebar pull-out detection device according to claim 4, characterized in that, The two limiting blocks (94) are parallel to each other.

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