Detection device for 2200MPa anchorage device

Abstract

The utility model discloses a detection device for a 2200MPa anchorage device, which comprises a detection cylinder body, and a bundle penetrating hole and a threaded hole which are respectively arranged at the opposite end parts of the detection cylinder body, the peripheral surface of the detection cylinder body is provided with a plurality of reverse grooves close to the bundle penetrating hole, and the peripheral surface of the detection cylinder body is provided with a disassembly groove. According to the utility model, the structure is simple, the plurality of reverse grooves are arranged on the outer peripheral surface of the detection cylinder body, and the reverse grooves can well avoid other clamping pieces adjacent to a disassembled clamping piece during use, so that the influence on the other clamping pieces in the disassembly process is avoided, the operation time is shortened, the labor intensity is reduced, and the working efficiency is improved. And secondly, the outer peripheral surface of the detection cylinder is also provided with the dismounting groove, and the clamping piece can be easily dismounted by plugging an iron hook type tool into the dismounting groove, so that the dismounting process is simplified, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of wire harness testing technology, specifically a testing device for 2200MPa anchorages. Background Technology

[0002] With the development of modern civil engineering, especially for complex structures such as large bridges and high-rise buildings, the application of prestressed concrete technology is becoming increasingly widespread. Among them, post-tensioned prestressed concrete simply supported box girders are favored as an important structural form due to their excellent mechanical properties and ease of construction. In recent years, 2200MPa-level wedge-type anchorages have been gradually applied to such structures. Their strength grade and anchorage performance are significantly higher than those of conventional 1860MPa-level anchorage systems, greatly improving the safety and durability of the structure.

[0003] However, wedge-type anchorages with a strength of 2200MPa face numerous challenges in practical applications. First, improper operation during tensioning, equipment malfunction, or quality issues with the anchorage itself can lead to anchorage failure, necessitating de-tensioning and re-tensioning of the anchorage components at the ends of the anchorage system. Second, if the anchorage performance test is unexpectedly interrupted, de-tensioning and disassembly are also required. Furthermore, in anchorage clamp matching tests, to accurately monitor the effective anchorage force of the prestress, it is necessary to pull out individual steel strands to disengage the wedges from the anchor plate's conical holes; this process also requires the use of a de-tensioning device.

[0004] Currently available integrated tensioning fixtures are complex to install and use, especially when only a single strand is being tensioned. The installation process is time-consuming, labor-intensive, and inefficient, increasing construction costs and time. In summary, existing tensioning fixtures have significant shortcomings in terms of installation, strength grade, and connection method. Therefore, a testing device for 2200MPa anchorages is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a testing device for 2200MPa anchorages to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a 2200MPa anchor testing device, comprising a testing cylinder and a through hole and a threaded hole respectively provided at opposite ends of the testing cylinder, wherein the outer peripheral surface of the testing cylinder has a plurality of reverse grooves adjacent to the through hole, and the outer peripheral surface of the testing cylinder has a disassembly groove.

[0007] As a further embodiment of this utility model, a limiting step is provided between the threaded hole and the threaded hole.

[0008] As a further embodiment of this utility model: the middle part of the limiting step has a circular through hole, and the inner diameter of the circular through hole is adapted to the outer diameter of the steel strand.

[0009] As a further embodiment of this utility model: the end of the disassembly groove away from its opening is designed as an arc shape.

[0010] As a further embodiment of this utility model: the number of the reverse grooves is four, and the four reverse grooves are designed in a plum blossom pattern.

[0011] As a further embodiment of this utility model: the internal thread of the threaded hole is adapted to the external thread of the jack connection end.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This application provides multiple reverse grooves on the outer circumferential surface of the detection cylinder. These reverse grooves can effectively avoid other clamps adjacent to the clamp being disassembled during use, thus avoiding the impact on other clamps during disassembly, reducing operation time and labor intensity. Secondly, the outer circumferential surface of the detection cylinder is also provided with a disassembly groove. By inserting a hook-like tool into the disassembly groove, the clamp can be easily removed, simplifying the disassembly process and improving work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the detection cylinder of this utility model;

[0015] Figure 2 This is a schematic diagram of the threaded hole of this utility model;

[0016] Figure 3 This is a schematic diagram of the disassembly groove of this utility model;

[0017] Figure 4 This is a side view of the detection cylinder of this utility model;

[0018] Figure 5 This is a cross-sectional schematic diagram of the detection cylinder of this utility model;

[0019] Figure 6 This is a schematic diagram of the end face of the detection cylinder of this utility model;

[0020] Figure 7 This is a schematic diagram of the assembly of the detection cylinder of this utility model;

[0021] In the diagram: 1. Inspection cylinder; 2. Reverse groove; 3. Limiting step; 4. Through hole; 5. Threaded hole; 6. Disassembly groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-7 In this embodiment of the present invention, a testing device for a 2200MPa anchor includes a testing cylinder 1 and a through hole 4 and a threaded hole 5 respectively provided at opposite ends of the testing cylinder 1. The outer peripheral surface of the testing cylinder 1 has a plurality of reverse grooves 2 adjacent to the through hole 4, and the outer peripheral surface of the testing cylinder 1 has a disassembly groove 6.

[0024] Specifically, one end of the steel strand passes through one end of the detection cylinder 1 and extends to the other end. The end with the threaded hole 5 is connected to the jack. The internal thread of the threaded hole 5 matches the external thread of the jack's connection end. The end of the jack contacts the plane of the end of the detection cylinder 1, further enhancing the stability of the connection and ensuring safety and reliability during tensioning. The through-hole 4 is concentrically installed with the clamping plate, and the end face of the clamping plate is located inside the through-hole 4. The inner diameter of the through-hole 4 matches the maximum outer diameter of the clamping plate. The end face of the detection cylinder 1 near the through-hole 4 contacts the end face of the anchor plate, acting as abutment against the anchor plate. Thus, when tensioning the steel strand, the steel strand and the clamping plate will detach from the anchor plate, and the anchor... The plate is held in place. When prestressing is released, the jack engages the steel strands and tensions them, causing the wedges to detach from the anchor plate. When the wedges are completely detached and 15-20mm away from the end face of the anchor plate, the wedges can be removed by inserting a hook-like tool into the disassembly groove 6. Then, the steel strands and anchors are reinstalled to complete the prestressing release. When prestressing is tested, the jack engages the steel strands and tensions them, causing the wedges to detach from the anchor plate. The tension peak value displayed by the jack force sensor at the moment the wedges detach from the anchor plate is the effective anchoring force value to be tested. In addition, the design of multiple reverse grooves 2 can better avoid other wedges adjacent to the wedges being disassembled during use.

[0025] Please see Figure 5-6 In one embodiment, preferably, a limiting step 3 is provided between the through hole 4 and the threaded hole 5, which can further prevent the clamp from accidentally falling off during the prestress testing process.

[0026] Please see Figure 5-6 In one embodiment, preferably, the middle part of the limiting step 3 has a circular through hole, and the inner diameter of the circular through hole is adapted to the outer diameter of the steel strand. Furthermore, the design of the circular through hole facilitates the smooth passage of the steel strand through the circular through hole, ensuring that the steel strand can pass through the entire detection cylinder 1.

[0027] Please see Figure 3-4 In one embodiment, preferably, the end of the disassembly groove 6 away from its opening is rounded, and further, its rounded structure effectively avoids local stress concentration while reserving disassembly space.

[0028] Please see Figure 6 In one embodiment, preferably, the number of reverse grooves 2 is four, and the four reverse grooves 2 are designed in a plum blossom pattern. Furthermore, the angle between the line connecting the center of the adjacent outer arc and the center of the through hole 4 is 60°, which can better avoid other clips adjacent to the clip being disassembled during use, thus achieving convenient installation.

[0029] The working principle and usage process of this utility model are as follows: When using prestressed tensioning, the steel strands are engaged by jacks and tensioned. When the tension force exceeds the anchoring force, the wedges disengage from the cone holes of the anchor plate. At this point, tensioning is stopped, and the tension force value of the jacks is recorded to achieve the purpose of detecting the effective anchoring force value. After the detection is completed, the jack force value is removed, and the wedges are retracted and anchored again. During this process, the device plays the role of auxiliary detection and safety protection.

[0030] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0031] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A testing device for 2200MPa anchorages, characterized in that, It includes a detection cylinder (1) and a through hole (4) and a threaded hole (5) respectively provided at opposite ends of the detection cylinder (1). The outer peripheral surface of the detection cylinder (1) has a plurality of reverse grooves (2) adjacent to the through hole (4), and the outer peripheral surface of the detection cylinder (1) has a disassembly groove (6).

2. The 2200MPa anchorage testing device according to claim 1, characterized in that, A limiting step (3) is provided between the threaded hole (4) and the threaded hole (5).

3. The 2200MPa anchorage testing device according to claim 2, characterized in that, The limiting step (3) has a circular through hole in the middle, and the inner diameter of the circular through hole is adapted to the outer diameter of the steel strand.

4. The 2200MPa anchorage testing device according to claim 1, characterized in that, The end of the disassembly groove (6) away from its opening is rounded.

5. The 2200MPa anchorage testing device according to claim 1, characterized in that, The number of the reverse grooves (2) is four, and the four reverse grooves (2) are designed in a plum blossom pattern.

6. The 2200MPa anchorage testing device according to claim 1, characterized in that, The internal thread of the threaded hole (5) is adapted to the external thread of the jack connection end.

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