Static load anchoring test device

Abstract

The utility model discloses a static load anchoring test device which comprises a first fixing plate and a second fixing plate which are connected through a supporting rod, the static load anchoring test device further comprises an anchoring assembly, the anchoring assembly comprises a first anchor bearing plate, a second anchor bearing plate and a steel strand, and clamping assemblies are arranged at the two ends of the steel strand. The first anchor bearing plate and the second anchor bearing plate are each provided with at least one conical hole. A moving assembly is arranged on the side, away from the second fixing plate, of the first fixing plate and comprises a connecting base, a sliding block and a vertical plate, a first motor is arranged on the vertical plate, an output shaft of the first motor penetrates through the side wall of the vertical plate to be connected with a rotating rod, and a limiting assembly is installed on one side of the rotating rod; the limiting assembly comprises two limiting plates and two air cylinders, a through hole is formed in the rotating rod, the limiting plates are slidably connected to the inner wall of the through hole, two connecting holes are further formed in the rotating rod, and piston rods of the air cylinders penetrate through the connecting holes to be fixedly connected with the limiting plates. According to the utility model, the clamping piece and the anchorage device can be disassembled conveniently, and the use convenience of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of prestressed stress testing equipment, in particular to a static load anchoring testing device. Background Art

[0002] Anchors are permanent anchoring devices used in prestressed concrete. They are used in post-tensioned structures or components to maintain the tension of prestressed tendons and transfer it to the concrete. They are also called prestressed anchors. After production, anchors are tested using a static load system to effectively measure their static and cyclic load performance, ensuring product quality. According to the national standard GB / T14370-2015 "Anchors, Clamps, and Connectors for Prestressed Reinforcement" and the industry standard TB / T3193-2016 "Clip-Type Anchors, Clamps, and Connectors for Prestressed Reinforcement in Railway Engineering," prestressed anchor assemblies must pass four tests: static load, workmanship, fatigue, and low-temperature tests. The static load test of prestressed tendon anchor assemblies is a key technical indicator for product acceptance and on-site inspection, and is a crucial component in reflecting product quality and ensuring reliable construction performance.

[0003] The static load test described above uses a static load anchor testing machine to load the anchors securing the steel strands. The static load anchor testing machine consists of a testing machine body and an anchor. The left and right ends of the testing machine body correspond to each other and are connected. Removable anchor pads with holes in the center are installed at each end of the testing machine body. The steel strands are threaded through the anchor pads at each end. The anchor pads are detachably connected to the side of the anchor pads away from the testing machine body. The anchors have multiple holes through which the anchors pass through the holes and are positioned against the anchor pads. A clip passes through the steel strands and into the holes in the anchor. To conduct the test, the steel strand, anchor, and clip are installed, the testing machine is turned on, and a tensile force is applied from one end of the testing machine body. The test concludes when the steel strand breaks, and the test results are obtained. The clip is now fully embedded in the anchor hole. After the test, the broken steel strand and anchor are separated and the clip is removed from the anchor hole, allowing the clip and anchor to be reused. However, after the experiment, since the clip was completely embedded in the hole of the anchor, the clip and the anchor were not easy to separate from each other, and it was difficult to withdraw the clip from the hole of the anchor. It was very labor-intensive for the workers to dismantle it, which made it time-consuming to dismantle the entire set of prestressed tendon anchor test assembly, and increased the test cycle of the static load test of the prestressed tendon anchor assembly. Summary of the Invention

[0004] In order to solve the problems pointed out in the background technology, the utility model proposes a static load anchoring test device, which facilitates the disassembly of the clip and the anchor, improves the convenience of using the device, saves manpower in the disassembly process, and thus shortens the test cycle of the static load test of the prestressed tendon anchor assembly.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A static load anchoring test device, comprising a first fixing plate and a second fixing plate, wherein the first fixing plate and the second fixing plate are connected by a support rod, and further comprising an anchor assembly, wherein the anchor assembly comprises a first anchor pad, a second anchor pad, and a steel strand, wherein clamping assemblies are provided at both ends of the steel strand, and each of the first anchor pad and the second anchor pad is provided with at least one tapered hole that cooperates with the clamping assembly;

[0007] A moving assembly is provided on a side of the fixed plate 1 away from the fixed plate 2, and the moving assembly includes a connecting seat, a slider and a vertical plate. A slide groove is provided on the upper end of the connecting seat, and the slider is slidably arranged in the slide groove. The vertical plate is provided on the upper end of the slider. A motor 1 is provided on the vertical plate, and an output shaft of the motor 1 passes through the side wall of the vertical plate and is connected to a rotating rod. A limit assembly is installed on the side of the rotating rod away from the motor 1;

[0008] The limit assembly includes two limit plates and two cylinders. A through hole is provided on the rotating rod. The limit plates are slidably connected to the inner wall of the through hole in the direction of approaching or moving away from the steel strand. The cylinder bodies of the cylinders are fixedly set on the rotating rod. Two connecting holes are also provided on the rotating rod. The piston rod of each cylinder passes through the connecting hole and is fixedly connected to each limit plate.

[0009] Preferably, the rotating rod is a Z-shaped rod, which includes a vertical part one, a vertical part two and a connecting part connecting the vertical part one and the vertical part two. Reinforcing ribs are provided between the vertical part one and the connecting part, and between the vertical part and the connecting part. The vertical part one is fixedly mounted on the output shaft of the motor one, and the limit assembly is installed on the vertical part two.

[0010] Preferably, a through-type jack is provided at the left end of the fixing plate one, and the anchor plate one is provided at the end of the through-type jack away from the fixing plate one; a mounting plate is provided at the right end of the fixing plate two, and the anchor plate two is provided at the end of the mounting plate away from the fixing plate two.

[0011] Preferably, the clamping assembly includes two clips with the same structure, the two clips are assembled to form a cone that matches the tapered hole, and the steel strand passes through the cone.

[0012] Preferably, the structures of the fixing plate 1 and the fixing plate 2 are the same, a through hole is provided in the center of the fixing plate 1, and four mounting holes are provided around the central through hole of the fixing plate 1. Four support rods are provided, and the two ends of each support rod are respectively passed through the fixing plate 1 and the fixing plate 2; the two ends of the support rod are threaded ends, and the middle of the support rod is a smooth rod, the diameter of the smooth rod is larger than the diameter of the threaded end, and the threaded end passes through the mounting hole on the fixing plate 1 or the fixing plate 2 and is fitted with a nut.

[0013] Preferably, the moving component also includes motor 2 and a screw rod. Motor 2 is installed on the side of the connecting seat away from fixed plate 1. The output shaft of motor 2 passes through the connecting seat and is installed to the screw rod. A threaded hole is opened in the center of the slider. The screw rod is installed in the threaded hole of the slider. The other end of the screw rod is rotatably set on the connecting seat through a bearing.

[0014] The beneficial effects of the utility model are:

[0015] When the through-type jack in the utility model drives the anchor plate one to move, the anchor plate two maintains an unchanged axial displacement, and the anchor plate one moves back to the anchor plate two, so that the clip in the clamping assembly slides and cooperates with the tapered hole. During the sliding process, the steel strand is clamped and tension is applied to the steel strand, thereby measuring the stress condition of the anchor assembly; after the anchoring test is completed, the steel strands are all broken, and the clip is completely embedded in the tapered hole of the anchor plate one or the anchor plate two. At this time, the staff aligns one of the steel strands with the through hole on the rotating rod, and then starts the motor two. The output shaft of the motor two drives the screw rod to rotate, and the rotation of the screw rod drives the slider to move through the threaded cooperation, so that the limit assembly moves close to the anchor plate. The steel strand slides in one direction, and the two limit plates clamp the steel strand after the steel strand passes through the through hole. The output shaft of motor 2 is used to drive the screw to rotate in the opposite direction, so that the limit assembly pulls the steel strand to slide in one direction away from the anchor plate, so that the steel strand drives the clip to separate from the anchor; then, the two limit plates release the clamping effect on the steel strand, and start motor 1. The output shaft of motor 1 drives the rotating rod to rotate, and aligns the through hole on the rotating rod with the next steel strand. Then, by starting motor 2, the above steps are repeated until all the clips are separated from the anchor, thereby facilitating the disassembly of the clip and the anchor, improving the convenience of using the device, saving manpower in the disassembly process, and thus shortening the test cycle of the static load test of the prestressed tendon anchor assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional static load anchoring test device of the utility model. Figure 1 .

[0017] Figure 2 This is a three-dimensional static load anchoring test device of the utility model. Figure 2 .

[0018] Figure 3It is a schematic diagram of a moving component and a limiting component in a static load anchoring test device of the utility model.

[0019] Figure 4 It is a schematic diagram of a transfer rod and a limit assembly in a static load anchoring test device of the utility model.

[0020] Figure 5 It is a schematic diagram of a transfer rod in a static load anchoring test device of the present invention.

[0021] Figure 6 The utility model is a schematic diagram of an anchor plate and a through-type jack in a static load anchoring test device.

[0022] Figure 7 It is a schematic diagram of an anchor pad 2 and a mounting plate in a static load anchoring test device of the utility model.

[0023] Figure 8 It is a schematic diagram of a fixing plate 1, a support rod and a fixing plate 2 in a static load anchoring test device of the utility model. DETAILED DESCRIPTION

[0024] The present invention is further described below with reference to the accompanying drawings and specific embodiments:

[0025] like Figures 1 to 8 As shown, a static load anchoring test device includes a fixing plate 1 and a fixing plate 2, and the fixing plate 1 and the fixing plate 2 are connected by a support rod 3, and also includes an anchoring assembly, the anchoring assembly includes an anchor pad 1 4, an anchor pad 2 5 and a steel strand 6, and clamping assemblies are provided at both ends of the steel strand 6, and the anchor pad 1 4 and the anchor pad 2 5 are respectively provided with at least one conical hole 7 that cooperates with the clamping assembly; through the above-mentioned setting structure, when the through-type jack 17 drives the anchor pad 1 4 to move, the anchor pad 2 5 maintains an unchanged axial displacement, and the anchor pad 1 4 moves back to the anchor pad 2 5, so that the clip 19 in the clamping assembly slides with the conical hole 7, and in the process of sliding, the steel strand 6 is clamped, and tension is applied to the steel strand 6, thereby measuring the stress condition of the anchoring assembly.

[0026] Furthermore, a movable assembly is provided on the side of the fixed plate 1 away from the fixed plate 2 2. The movable assembly includes a connecting seat 8, a slider 9, and a vertical plate 10. The upper end of the connecting seat 8 is provided with a slide groove, and the slider 9 is slidably disposed in the slide groove. The vertical plate 10 is disposed on the upper end of the slider 9. A motor 11 is provided on the vertical plate 10. The output shaft of the motor 11 passes through the side wall of the vertical plate 10 and is connected to a rotating rod 12. A limit assembly is installed on the side of the rotating rod 12 away from the motor 11. It is worth mentioning that in actual use of the present invention, a movable assembly is provided on each side of the fixed plate 1 and the fixed plate 2, to facilitate the removal of the broken steel strand 6.

[0027] Please refer again Figure 4 The limiting assembly includes two limiting plates 13 and two cylinders 14. A through hole 15 is provided on the rotating rod 12. The limiting plates 13 are slidably connected to the inner wall of the through hole 15 in the direction of approaching or moving away from the steel strand 6. The cylinder bodies of the cylinders 14 are fixedly set on the rotating rod 12. The rotating rod 12 also has two connecting holes 16. The piston rod of each cylinder 14 passes through the connecting hole 16 and is fixedly connected to each limiting plate 13. Through the above-mentioned setting structure, when it is necessary to clamp a steel strand 6, a steel strand 6 is passed through the through hole 15 on the rotating rod 12, and then the two cylinders 14 are driven, so that the piston rods of the two cylinders 14 push the limiting plates 13 to move towards the steel strand 6, so that the two clamping plates cooperate with each other to clamp the steel strand 6; when removing the steel strand 6, it is only necessary to drive the cylinder 14 in the reverse direction to move the limiting plates 13 away from the steel strand 6, so that the steel strand 6 can be removed.

[0028] Please refer again Figure 5 The rotating rod 12 is a Z-shaped rod, and the rotating rod 12 includes a vertical part 1201, a vertical part 2 1203, and a connecting part 1202 connecting the vertical part 1201 and the vertical part 2 1203. Reinforcing ribs are provided between the vertical part 1201 and the connecting part 1202, and between the vertical parts and the connecting part 1202. The vertical part 1201 is fixedly mounted on the output shaft of the motor 11, and the limit assembly is installed on the vertical part 2 1203.

[0029] Preferably, a through-type jack 17 is provided at the left end of the fixing plate 1, the anchor plate 4 is provided at the end of the through-type jack 17 away from the fixing plate 1, a mounting plate 18 is provided at the right end of the fixing plate 2, and the anchor plate 2 5 is provided at the end of the mounting plate 18 away from the fixing plate 2 2. The axes of the anchor plate 4 and the anchor plate 2 5 are located on the same horizontal line. Through the above-described arrangement, the mounting plate 18 can limit the axial movement of the anchor plate 2 5. Driven by the through-type jack 17, the anchor plate 4 can move axially relative to the anchor plate 2 5. The through-type jack 17 can achieve different degrees of expansion and contraction, thereby achieving different tension conditions, and testing different operating conditions of the steel strand 6 and anchor combination.

[0030] In this embodiment, the clamping assembly comprises two identical clips 19. These clips 19 combine to form a cone that mates with the tapered hole 7, through which the steel strand 6 passes. Specifically, the diameter of the tapered hole 7 facing toward the first or second plate 1 or 2 is smaller than the diameter of the hole facing away from the first or second plate 2. The ends of the steel strand 6 are clamped between the clips 19.

[0031] Preferably, the structures of the fixing plate 1 and the fixing plate 2 are identical. A through-hole 20 is provided in the center of the fixing plate 1, and four mounting holes 21 are provided around the central through-hole 20 of the fixing plate 1. Four support rods 3 are provided, each of which is respectively threaded through the ends of the fixing plate 1 and the fixing plate 2. The support rods 3 have threaded ends, and the middle portion of the support rod 3 is a smooth rod. The smooth rod has a larger diameter than the threaded end. The threaded end passes through the mounting hole 21 in the fixing plate 1 or the fixing plate 2 and is fitted with a nut 22. The connection between the support rods 3 and the fixing plates 1 and 2 provides a simple structure.

[0032] Preferably, the moving component also includes a second motor 23 and a screw rod 24. The second motor 23 is installed on the side of the connecting seat 8 away from the fixed plate 1. The output shaft of the second motor 23 passes through the connecting seat 8 and is installed to the screw rod 24. A threaded hole is opened in the center of the slider 9. The screw rod 24 is installed in the threaded hole of the slider 9. The other end of the screw rod 24 is rotatably set on the connecting seat 8 through a bearing.

[0033] How to use this product:

[0034] When an anchoring test is required, the steel strand 6 is assembled with the anchor plate 1 4 and the anchor plate 2 5. The two ends of the steel strand 6 are clamped between the clips 19. Under the driving action of the through-type jack 17, the anchor plate 1 4 can move axially relative to the anchor plate 2 5, and the clips 19 drive the steel strand 6 to stretch for testing.

[0035] After the anchoring test is completed, the steel strands 6 are all broken, and the clips 19 are completely embedded in the tapered holes 7 of the anchor plate 1 4 or the anchor plate 2 5. At this time, the staff aligns one of the steel strands 6 with the through hole 15 on the rotating rod 12, and then starts the motor 2 23. The output shaft of the motor 2 23 drives the screw rod 24 to rotate. The rotation of the screw rod 24 drives the slider 9 to move through the threaded fit, so that the limit assembly slides toward the direction of the anchor plate 1 4. After the steel strand 6 passes through the through hole 15, the two limit plates 13 clamp the steel strand 6. The output shaft of the motor 2 23 drives the screw rod 24 to rotate in the opposite direction, so that the limit assembly pulls the steel strand 6 to slide away from the anchor plate 1 4, so that the steel strand 6 drives the clip 19 to separate from the anchor.

[0036] Then, the two limit plates 13 release the clamping effect on the steel strand 6, start the motor 11, and the output shaft of the motor 11 drives the rotating rod 12 to rotate, aligning the through hole 15 on the rotating rod 12 with the next steel strand 6, and then start the motor 2 23, repeating the above steps until all the clips 19 are separated from the anchor.

[0037] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A static load anchoring test device, comprising a fixing plate 1 (1) and a fixing plate 2 (2), wherein the fixing plate 1 (1) and the fixing plate 2 (2) are connected via a support rod (3), characterized in that: It also includes an anchoring assembly, the anchoring assembly includes an anchor pad 1 (4), an anchor pad 2 (5) and a steel strand (6), both ends of the steel strand (6) are provided with a clamping assembly, and the anchor pad 1 (4) and the anchor pad 2 (5) are respectively provided with at least one tapered hole (7) that matches the clamping assembly; A moving assembly is provided on the side of the fixed plate 1 (1) away from the fixed plate 2 (2), and the moving assembly includes a connecting seat (8), a slider (9) and a vertical plate (10), the upper end of the connecting seat (8) is provided with a slide groove, the slider (9) is slidably provided in the slide groove, the vertical plate (10) is provided at the upper end of the slider (9), a motor 1 (11) is provided on the vertical plate (10), the output shaft of the motor 1 (11) passes through the side wall of the vertical plate (10) and is connected to a rotating rod (12), and a limiting assembly is installed on the side of the rotating rod (12) away from the motor 1 (11); The limiting assembly includes two limiting plates (13) and two cylinders (14). A through hole (15) is provided on the rotating rod (12). The limiting plates (13) are slidably connected to the inner wall of the through hole (15) in a direction approaching or moving away from the steel strand (6). The cylinder bodies of the cylinders (14) are fixedly arranged on the rotating rod (12). Two connecting holes (16) are also provided on the rotating rod (12). The piston rod of each cylinder (14) passes through the connecting hole (16) and is fixedly connected to each limiting plate (13).

2. The static load anchoring test device according to claim 1, characterized in that: The rotating rod (12) is a Z-shaped rod, and the rotating rod (12) includes a vertical portion 1 (1201), a vertical portion 2 (1203), and a connecting portion (1202) connecting the vertical portion 1 (1201) and the vertical portion 2 (1203). Reinforcing ribs are provided between the vertical portion 1 (1201) and the connecting portion (1202), and between the vertical portion and the connecting portion (1202). The vertical portion 1 (1201) is fixedly mounted on the output shaft of the motor 1 (11), and the limit assembly is installed on the vertical portion 2 (1203).

3. The static load anchoring test device according to claim 1, characterized in that: A through-type jack (17) is provided at the left end of the fixing plate 1 (1), the anchor plate 1 (4) is provided at the end of the through-type jack (17) away from the fixing plate 1 (1), a mounting plate (18) is provided at the right end of the fixing plate 2 (2), and the anchor plate 2 (5) is provided at the end of the mounting plate (18) away from the fixing plate 2 (2).

4. The static load anchoring test device according to claim 1, characterized in that: The clamping assembly comprises two clips (19) of identical structure, the two clips (19) being assembled to form a cone that matches the tapered hole (7), and the steel strand (6) passes through the cone.

5. The static load anchoring test device according to claim 1, characterized in that: The structures of the fixing plate 1 (1) and the fixing plate 2 (2) are the same. A through hole (20) is provided in the center of the fixing plate 1 (1). Four mounting holes (21) are provided around the central through hole (20) of the fixing plate 1 (1). Four support rods (3) are provided, and the two ends of each support rod (3) are respectively passed through the fixing plate 1 (1) and the fixing plate 2 (2); the two ends of the support rod (3) are threaded ends, and the middle of the support rod (3) is a smooth rod. The diameter of the smooth rod is larger than the diameter of the threaded end. The threaded end passes through the mounting hole (21) on the fixing plate 1 (1) or the fixing plate 2 (2) and is fitted with a nut (22).

6. The static load anchoring test device according to claim 1, characterized in that: The moving assembly further comprises a second motor (23) and a screw rod (24). The second motor (23) is mounted on a side of the connecting seat (8) away from the first fixed plate (1). The output shaft of the second motor (23) passes through the connecting seat (8) and is mounted to the screw rod (24). A threaded hole is provided at the center of the slider (9). The screw rod (24) is mounted in the threaded hole of the slider (9). The other end of the screw rod (24) is rotatably arranged on the connecting seat (8) through a bearing.

Images