CN202494581U - Anticorrosive long-term observation device for stranded steel wire anchorage device - Google Patents

Abstract

The utility model provides anticorrosion devices for prestressed anchorage devices for bridge guy cables and the like and particularly relates to an anticorrosive long-term observation device for a stranded steel wire anchorage device. The anticorrosive long-term observation device comprises an anchorage device assembly formed by a sealing drum and an anchor plate which are connected together, wherein the anchor plate is provided with perfusion through holes leading to the inside of the sealing drum. The anticorrosive long-term observation device further comprises observation rods mounted on the anchorage device assembly, wherein unscrewing pull rings are mounted at one ends of the observation rods, the other ends of the observation rods are inserted in the sealing drum through the perfusion through holes, rod bodies of the observation rods are provided with sealing threads, and the perfusion through holes are provided with internal threads matched with the sealing threads. The anticorrosive long-term observation device is simple in structure and low in manufacturing cost. More preferably, through the anticorrosive long-term observation device, the anticorrosion condition inside the anchorage device can be conveniently and effectively monitored, and anticorrosion materials can be replaced in time, thereby guaranteeing the safety of bridges.

Description

Anti-corrosion long-term observation device for steel strand anchor

technical field

The utility model belongs to the technical field of roads and bridges. Especially the anti-corrosion device of prestressed anchors such as bridge cables.

Background technique

At present, anti-corrosion materials (grease, paraffin, etc.) are usually poured into the anchorages of prestressed steel strand cables used in bridges to protect the exposed steel strand surface. Since the perfusion chamber is a sealed cylinder, it is installed in a concealed position on the bridge structure, and the change of the anti-corrosion medium in the sealed cylinder cannot be easily observed at any time (see Figure 3). In addition, the anti-corrosion material in the sealing cylinder is in a state of poor fluidity ointment (grease) at room temperature. When the performance of the anti-corrosion material changes or the steel strand needs to be replaced, the anti-corrosion material in the sealing cylinder is difficult to replace. To sum up, during the use of the bridge after its completion, the safety of the bridge cannot be effectively guaranteed because the anti-corrosion condition in the anchorage cannot be effectively monitored and the anti-corrosion materials are difficult to replace.

Contents of the invention

The purpose of this utility model is to provide a long-term anti-corrosion observation device for steel strand anchors, which can conveniently and effectively monitor the anti-corrosion conditions in the anchors, and replace anti-corrosion materials in time to ensure the safety of the bridge.

The technical solution adopted to achieve the purpose of this utility model is as follows, a long-term anti-corrosion observation device for steel strand anchors, including an anchor assembly composed of a sealed cylinder and an anchor plate connected together, the anchor plate It has a filling through hole leading to the inside of the sealing cylinder. It also includes an observation rod installed on the anchor assembly, one end of the observation rod is equipped with a pull-out pull ring, and the other end is inserted into the sealing cylinder through the perfusion through hole, and the rod body of the observation rod There is a sealing thread, and the filling through hole has an internal thread matched with the sealing thread. After the bridge is completed, when it is necessary to monitor the anti-corrosion state inside the anchorage, the observation rod can be unscrewed, and the anti-corrosion state inside the anchorage can be observed through the perfusion through hole or the material brought out by the observation rod, so as to decide whether to replace the anti-corrosion material, so that the inside of the anchor can be effectively protected.

Due to the above structure, the utility model has the advantages of simple structure, low manufacturing cost, and can be widely used in anticorrosion of prestressed anchors. Even better, it is possible to regularly monitor the changes in the performance of the anti-corrosion material inside the sealing cylinder, and replace the anti-corrosion material in time to ensure the anti-corrosion reliability of the anchor.

Description of drawings

The device of the present invention can be further illustrated by the non-limiting examples given in the accompanying drawings.

Fig. 1 is the front view of observation rod of the present utility model;

Fig. 2 is the use schematic diagram of the utility model;

Fig. 3 is a schematic diagram of anchorage anticorrosion in the prior art.

In the figure: 1-unscrew the pull ring, 2-sealing thread, 3-observation rod, 4-anchor plate, 5-sealing cylinder, 6-perfusion through hole, 7-container tank.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and embodiments, but it should not be understood that the scope of the above subject matter of the utility model is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present utility model, various replacements and changes made according to common technical knowledge and conventional means in this field shall be included in the scope of the present utility model.

See the accompanying drawings: a long-term anti-corrosion observation device for steel strand anchors, including an anchor assembly consisting of a sealed cylinder 5 and an anchor plate 4 connected together. The anchor plate 4 has a Fill via 6. It also includes an observation rod 3 installed on the anchor assembly, one end of the observation rod 3 is equipped with a pull-out pull ring 1, and the other end is inserted into the sealing cylinder 5 through the perfusion through hole 6, and the observation rod 3 The rod body of the rod 3 has a sealing thread 2 , and the filling through hole 6 has an internal thread matched with the sealing thread 2 . The sealing cylinder is filled with an anti-corrosion material in the form of ointment. After the anticorrosion material in the anchorage is poured, the observation rod 3 can be screwed into the pouring through hole 6 to seal the anticorrosion material inside. During the use of the bridge, the observation rod 3 can be unscrewed regularly to monitor the change of the anti-corrosion material and maintain in time to ensure the safety of the bridge.

In the embodiment, the end of the observation rod 3 inserted into the sealing cylinder 5 has a material storage tank 7, and more anti-corrosion materials can be brought out during monitoring, which is convenient for testing and observation.

Further, the observation stick 3 has a temperature sensor. The sensor can adopt the sensor in the prior art. After the bridge is completed, the anti-corrosion materials can be monitored in real time through sensors to detect changes in the anti-corrosion materials in a more timely manner and replace them in time to ensure the safety of the bridge.

Claims (3)

1. A long-term anti-corrosion observation device for steel strand anchors, including an anchor assembly consisting of a sealed cylinder (5) and an anchor plate (4) connected together. The anchor plate (4) has a The perfusion through hole (6) inside the envelope (5) is characterized in that it also includes an observation rod (3) installed on the anchor assembly, and one end of the observation rod (3) is installed with a pull-out pull ring (1), the other end is inserted into the sealing cylinder (5) through the perfusion through hole (6), the rod body of the observation rod (3) has a sealing thread (2), and the perfusion through hole (6) It has an internal thread matched with the sealing thread (2). 2. A long-term anti-corrosion observation device for steel strand anchors according to claim 1, characterized in that: the end of the observation rod (3) inserted into the sealing cylinder (5) has a storage tank (7). 3. A long-term anti-corrosion observation device for steel strand anchors according to claim 1, characterized in that: the observation rod (3) has a temperature sensor.

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