Cold casting anchor inhaul cable of taper sleeve anchoring structure

Abstract

The utility model relates to a chill cast anchor stay cable of taper sleeve anchoring structure, including fixed end anchorage device, tensioning end anchorage device, seal subassembly and finished cable, fixed end anchorage device and tensioning end anchorage device both include neck bush, anchor head and cover plate, neck bush is taper sleeve, neck bush is buckled on anchor head to clamp anchor head, fixed end anchorage device includes fixed end anchor cup, and the cover plate is fixed end anchor cup. A neck bush and an anchor head of the fixed-end anchorage device are tightly embedded in an inner taper hole of a fixed-end anchor cup, cover plates are installed at the inner end and the outer end of the fixed-end anchor cup, the tensioning-end anchorage device comprises a tensioning-end anchor cup and a nut, a neck bush and an anchor head of the tensioning-end anchorage device are tightly embedded in an inner taper hole of the tensioning-end anchor cup, and the cover plates are installed at the inner end and the outer end of the tensioning-end anchor cup. The exterior of the tensioning end anchor cup is connected with a nut. Anchorage devices at the two ends of the chilled cast anchor inhaul cable are of taper sleeve anchoring structures, the anchor heads are anchored in the anchor cups through the neck bushes, small-size anchor heads can be adopted, the anchor heads and the anchor cups do not need to be cast into a whole, and the chilled cast anchor inhaul cable can be used for bridge cable replacement with small embedded pipes.

Description

Technical Field

[0001] The utility model relates to a cable, in particular to a cold cast anchor cable with a cone sleeve anchoring structure. Background Art

[0002] Cold cast anchor cables are widely used in bridge construction, especially in cable-stayed bridges, suspender arch bridges and suspension bridges. They are important components of bridges and play an important role in affecting the internal force and deformation of bridges. The production of cold cast anchor cables is to pass the steel wire through the cold cast anchor cup, then through the wire dividing plate, and then the steel wire head is swaged, and finally the cold cast body is filled into the cold cast anchor cup, and the anchor cup and the cable body are cast into a whole. When the cable is stressed, the force of the cable body is transmitted to the cold cast anchor cup. Affected by its structure, the anchor head produced by conventional cold cast anchor cables is relatively large.

[0003] Many old bridges use upswept anchor cables, which are made by threading the cables on site and then upswaging them. The embedded pipes used in such old bridges are often relatively small, which results in the need to replace them with new cold-cast anchor cables in later repairs. The new cables have larger anchor heads and cannot be inserted into the embedded pipes, making it impossible to replace the old cables. In response to this, it is necessary to develop a cable with a smaller anchor head than conventional cold-cast anchors, so as to be used for cable replacement on bridges with smaller embedded pipes. Summary of the invention

[0004] The technical problem to be solved by the utility model is: to provide a cold cast anchor cable with a cone sleeve anchoring structure, the anchors at both ends of the cold cast anchor cable are a cone sleeve anchoring structure, the anchor head is anchored in the anchor cup through an inner liner, a small-sized anchor head can be used, and the anchor head and the anchor cup do not need to be cast as a whole, and can be used for cable replacement of bridges with small pre-buried pipes.

[0005] The technical solution to solve the above technical problems is: a cold cast anchor cable of a cone sleeve anchoring structure, comprising a fixed end anchor, a tensioning end anchor, a sealing assembly and a finished cable, wherein the fixed end anchor and the tensioning end anchor both comprise an inner sleeve, an anchor head and a cover plate, the inner sleeve being a conical sleeve composed of a jacket piece one and a jacket piece two, the inner sleeve being buckled on the anchor head to clamp the anchor head, the fixed end anchor comprising a fixed end anchor cup, the fixed end anchor cup being a cylinder with an inner tapered hole, the inner sleeve and the anchor head of the fixed end anchor being tightly embedded in the inner tapered hole of the fixed end anchor cup, the cover plate being installed at the inner and outer ends of the tensioning end anchor cup, and the outside of the tensioning end anchor cup being connected to the nut.

[0006] Furthermore, both side edges of the jacket piece 1 are respectively provided with protrusions, and both side edges of the jacket piece 2 are respectively provided with grooves corresponding to the shapes of the protrusions.

[0007] Furthermore, a cover plate mounting hole is provided on the outer side of the large end of the inner tapered hole of the tensioning end anchor cup and the fixed end anchor cup, the cover plate mounting hole is provided with a thread, and the cover plate is installed in the cover plate mounting hole through a threaded connection.

[0008] Furthermore, a protective cover is provided on the outside of the tensioning end anchor cup via a threaded connection.

[0009] Due to the adoption of the above technical solution, the utility model has the following technical effects:

[0010] 1. The anchor head is anchored in the anchor cup through a conical inner sleeve. Compared with the structure in which the anchor head and the anchor cup are cast as a whole, a small-sized anchor head can be used. The inner sleeve is installed between the anchor head and the anchor cup, that is, when the inner sleeve is installed, the two halves of the jacket are buckled on the outside of the anchor head and tightly embedded in the inner cone hole of the anchor cup after being pulled. The small-sized anchor head is easier to pass through the small-sized embedded pipe and has a wide range of applications.

[0011] 2. The anchor head, inner sleeve and anchor cup are separate designs and do not need to be cast as a whole. During installation, first pass the cable and anchor head through the embedded pipe, then through the anchor cup, install the inner sleeve, and then tightly fit in the anchor cup. This split-design cold-cast anchor cable is easier to pass through the embedded pipe, is more conducive to cable replacement, and is more suitable for cable replacement on bridges with smaller embedded pipes.

[0012] The technical features of the cold cast anchor cable of the cone sleeve anchoring structure of the utility model are further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 : A three-dimensional schematic diagram of the cold cast anchor cable of the cone sleeve anchoring structure of the utility model (installation completed, showing the internal structure).

[0014] Figure 2 : Figure 1 Enlarged view of part A.

[0015] Figure 3 : Figure 1 Enlarged view of part B.

[0016] Figure 4 : Schematic diagram of the inner bushing structure of the utility model.

[0017] Figure 5 : A cross-sectional view of the cold cast anchor cable of the cone sleeve anchoring structure of the present invention (installation completed state).

[0018] Figure 6 : Figure 5 Enlarged view of part C.

[0019] Figure 7 : Figure 5 Enlarged view of part D.

[0020] In the figure: 1-finished rope, 2-sealing assembly, 3-fixed end anchor cup, 4-inner sleeve, 41-jacket piece 1, 411-bump, 42-jacket piece 2, 421-groove, 5-anchor head, 6-cover plate, 7-tensioning end anchor cup, 8-nut, 9-protective cover, 10-cover plate mounting hole.

[0021] P1-anchor plate, P2-embedded pipe, P3-bridge deck, P4-waterproof cover. DETAILED DESCRIPTION

[0022] Embodiment 1:

[0023] A cold cast anchor cable of a cone sleeve anchoring structure, such as Figure 1-Figure 7 As shown, it includes a fixed end anchor, a tension end anchor, a sealing assembly 2 and a finished cable 1. The fixed end anchor and the tension end anchor both include an inner sleeve 4, an anchor head 5 and a cover plate 6. The inner sleeve 4 is in the shape of a cone sleeve, which is divided into two halves by wire cutting, that is, the inner sleeve 4 is a cone sleeve composed of a jacket piece 1 41 and a jacket piece 2 42. The inner sleeve 4 is buckled on the anchor head 5 to clamp the anchor head 5. The anchor head 5 is conical in shape, and the taper is the same as the inner tapered hole of the inner sleeve 4. After the anchor head 5 and the finished cable 1 are cold cast into one, the inner sleeve and the anchor cup are assembled outside the anchor head.

[0024] The fixed end anchor comprises a fixed end anchor cup 3, which is a cylinder with an inner tapered hole. The inner sleeve 4 and the anchor head 5 of the fixed end anchor are tightly inserted into the inner tapered hole of the fixed end anchor cup 3. The cover plate 6 is installed at the inner and outer ends of the fixed end anchor cup to prevent the anchor head and the inner sleeve from slipping backwards. During installation, the end face of the fixed end anchor cup 3 that is subjected to stress is seated on the anchoring surface of the anchor pad P1, and the inner tapered hole of the fixed end anchor cup 3 is installed with an inner sleeve 4 of the same taper.

[0025] The tension end anchor includes a tension end anchor cup 7 and a nut 8. The tension end anchor cup 7 is a cylinder with an inner tapered hole and an outer thread. The inner sleeve 4 and the anchor head 5 of the tension end anchor are tightly inserted in the inner tapered hole of the tension end anchor cup 7. The inner tapered hole of the tension end anchor cup 7 is installed with an inner sleeve 4 of the same taper. The cover plate 6 is installed at the inner and outer ends of the tension end anchor cup to prevent the anchor head 5 and the inner sleeve 4 from slipping backwards. The outside of the tension end anchor cup 7 is connected to the nut 8. After all the parts are assembled, when the cable is tensioned, the anchor head 5 is stressed. At this time, the anchor head transmits the force of the cable to the anchor pad P1 through the inner sleeve 4, the tension end anchor cup 7, and the nut 8, thereby realizing the cable function.

[0026] In this embodiment, the two sides of the jacket piece 1 41 are respectively provided with protrusions 411, and the two sides of the jacket piece 2 42 are respectively provided with grooves 421 corresponding to the shape of the protrusions 411. When the inner sleeve 4 is snap-fitted and installed outside the anchor head 5, the protrusions 411 are located in the grooves 421.

[0027] In this embodiment, a cover plate mounting hole 10 is further provided on the outside of the large end of the inner tapered hole of the tensioning end anchor cup 7 and the fixed end anchor cup 3, and the cover plate 6 mounting hole is provided with a thread, and the cover plate 6 is installed in the cover plate mounting hole 10 through a threaded connection.

[0028] In this embodiment, a protective cover 9 is also provided on the outside of the tensioning end anchor cup 7 through a threaded connection.

[0029] The installation steps of the cold cast anchor cable of the utility model cone sleeve anchoring structure are as follows:

[0030] 1. The anchor heads at both ends of the cable are processed in the factory and cold cast with the cable body.

[0031] 2. Transport the cable to the construction site and install the fixed end anchor first.

[0032] 3. After the cable is placed on the bridge deck and unfolded, insert the anchor head at the fixed end of the cable into the embedded pipe until the anchor head passes through the embedded pipe and exceeds the anchor surface of the anchor pad; insert it into the fixed end anchor cup, at this time, the entire anchor head should be exposed to the end face of the anchor cup that is not the anchor surface, and then the liner sleeve should be buckled and installed on the outside of the anchor head; pull the cable in the reverse direction to make the liner sleeve fit tightly against the conical surface of the anchor head and the anchor cup, and then screw the anchor head cover plate into the anchor cup to prevent the anchor head and the liner sleeve from slipping backwards, and complete the installation of the fixed end anchor.

[0033] 4. Similar to step 3, insert the anchor head of the tensioning end into the embedded pipe, and then insert it into the tensioning end anchor cup (assemble the nut on the tensioning end anchor cup), close the inner sleeve, pull the cable in the reverse direction, so that the inner sleeve is in close contact with the conical surface of the anchor head and the anchor cup, then screw the anchor head cover plate into the anchor cup tensioning cable body, tension the cable body, tighten the nut, and the cable installation is completed.

Claims

1. A cold cast anchor cable of a cone sleeve anchoring structure, comprising a fixed end anchor, a tension end anchor, a sealing assembly (2) and a finished cable (1), characterized in that: The fixed-end anchor and the tension-end anchor both comprise an inner sleeve (4), an anchor head (5) and a cover plate (6); the inner sleeve (4) is a conical sleeve composed of a first jacket piece (41) and a second jacket piece (42); the inner sleeve (4) is buckled onto the anchor head (5) to clamp the anchor head; the fixed-end anchor comprises a fixed-end anchor cup (3); the fixed-end anchor cup (3) is a cylinder with an inner conical hole; the inner sleeve (4) and the anchor head (5) of the fixed-end anchor are tightly fitted in the inner sleeve (4) and the anchor head (5) are tightly fitted in the inner sleeve (4) and the cover plate (6); The cover plate (6) is installed at the inner and outer ends of the fixed end anchor cup (3). The tension end anchor comprises a tension end anchor cup (7) and a nut (8). The tension end anchor cup (7) is a cylinder with an inner tapered hole and an outer thread. The inner sleeve (4) and the anchor head (5) of the tension end anchor are tightly inserted in the inner tapered hole of the tension end anchor cup. The cover plate (6) is installed at the inner and outer ends of the tension end anchor cup (7). The outside of the tension end anchor cup (7) is connected to the nut (8).

2. The cold cast anchor cable of the cone sleeve anchoring structure according to claim 1, characterized in that: The two side edges of the jacket piece 1 (41) are respectively provided with protrusions (411), and the two side edges of the jacket piece 2 (42) are respectively provided with grooves (421) corresponding to the shapes of the protrusions (411).

3. A cold cast anchor cable of a cone sleeve anchoring structure according to claim 1 or 2, characterized in that: A cover plate mounting hole (10) is provided on the outside of the large end of the inner tapered hole of the tensioning end anchor cup (7) and the fixed end anchor cup (3), and the cover plate (6) mounting hole is provided with a thread, and the cover plate (6) is mounted in the cover plate mounting hole (10) through a threaded connection.

4. A cold cast anchor cable of a cone sleeve anchoring structure according to claim 1 or 2, characterized in that: A protective cover (9) is also provided on the outside of the tension end anchor cup via a threaded connection.

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