Clamping groove type waterproof connecting device for inclined inhaul cable tower end

Abstract

The utility model relates to an inclined inhaul cable tower end clamping groove type waterproof connecting device, and belongs to the technical field of bridge or building inhaul cable structures. Comprising an extension pipe, one end of the extension pipe is arranged in a pre-buried pipe, the other end of the extension pipe is covered with an outer sleeve, a plurality of through holes which are evenly distributed in the annular direction are formed in the periphery of a pipe opening in the tail end of the pre-buried pipe, the through holes are formed in the radial direction of the pre-buried pipe, threaded sleeves are arranged in the through holes in a penetrating mode, and inner cavities of the threaded sleeves are communicated with an inner cavity of the pre-buried pipe. Stud pins are rotationally arranged in the threaded sleeves respectively, one ends of the stud pins are fixed in the threaded sleeves, the other ends of the stud pins extend into an inner cavity of the embedded pipe, a connecting ring is arranged on the periphery of one end of the extending pipe arranged in the embedded pipe, a plurality of clamping grooves which are evenly distributed in the annular direction are formed in the connecting ring, and the clamping grooves are connected with the corresponding stud pins in a clamped mode. And the connecting ring is fixedly connected with the embedded part. The structure is simple, and rainwater is effectively prevented from entering the inhaul cable from the tower end extension pipe; and fire potential safety hazards caused by welding are avoided, assembly and disassembly are convenient, and future overhaul and maintenance are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cable-stayed cable tower end clamping groove type waterproof connecting device and belongs to the technical field of bridge or building cable structure. BACKGROUND

[0002] As the main stressed component of bridge or building structure, the outer sleeve pipe of cable-stayed cable is generally connected with the tower end by a section of extension pipe component, in order to prevent rainwater from entering the cable and causing the corrosion of prestressed tendon and anchorage device, thereby affecting the service life of the cable, the existing steel strand cable tower end extension pipe component adopts the following two waterproof structure modes: mode one: several circumferentially distributed through holes are processed on the pipe opening part of the tower end exposed embedded pipe, the extension pipe and the fixing ring are installed and fixed, then the fixing ring is connected and fixed with the embedded pipe by screws processed on the outer circumference of the fixing ring, thereby playing a waterproof role; mode two: the extension pipe and the fixing ring are installed and fixed, then the fixing ring is welded and fixed with the embedded pipe, thereby playing a waterproof role. The above modes have the following disadvantages:

[0003] 1) for the project adopting climbing formwork construction of main tower, the tower end embedded pipe must be lengthened to expose the tower wall, so that the installation of the waterproof connecting device can be carried out, which greatly increases the workload, and the lengthening and welding of the embedded pipe is high-altitude operation, which has certain danger;

[0004] 2) after the fixing ring is welded and fixed with the embedded pipe, it is not conducive to the later maintenance and maintenance of the cable;

[0005] 3) the sparks generated by welding may burn the already installed cable outer sleeve pipe, which has fire safety hidden danger. INVENTION CONTENTS

[0006] The utility model solves the technical problems in the prior art, provides a cable-stayed cable tower end clamping groove type waterproof connecting device, which has simple structure, effectively prevents rainwater from entering the cable from the tower end extension pipe, does not need to be welded and fixed with the embedded pipe after installation, avoids the fire safety hidden danger caused by welding, is convenient to assemble and disassemble, and is convenient for later maintenance and maintenance.

[0007] The utility model adopts the technical scheme that a cable-stayed cable tower end clamping groove type waterproof connecting device, including extension pipe, the extension pipe one end is located in embedded pipe, the extension pipe other end covers the outer sleeve pipe, the embedded pipe tail pipe opening outer circle is respectively set up a plurality of annularly distributed through -hole, the through -hole is along the embedded pipe radial and is set up, the through -hole is respectively threaded in the threaded bush, the threaded bush inner chamber and embedded pipe inner chamber are through, the threaded bush is respectively screwed in the threaded stud, the threaded stud one end is fixed in the threaded bush, the other end is in the embedded pipe inner chamber, the threaded stud is located in the embedded pipe one end outer circle and is set up the connecting ring, the connecting ring is set up a plurality of annularly distributed clamping groove, the clamping groove and corresponding threaded stud are clamped, make the connecting ring with embedded part fixed connection.

[0008] The connecting ring is provided with a plurality of locking holes which are uniformly distributed in a ring shape, and a fastening screw is arranged in each locking hole.

[0009] The distance between the through hole of the pipe opening at the end of the embedded pipe and the tower wall is 50-200 mm.

[0010] The pipe opening of the extension pipe arranged in the embedded pipe is a trumpet-shaped opening of the extension pipe, the upper end of the connecting ring is a trumpet-shaped opening of the connecting ring, and the trumpet-shaped opening of the extension pipe is arranged in the trumpet-shaped opening of the connecting ring and is in close contact with the trumpet-shaped opening of the connecting ring.

[0011] The clamping grooves are 3-6 in number.

[0012] Compared with the prior art, the cable-stayed tower end clamping groove type waterproof connecting device has the advantages that the structure is simple, rainwater is effectively prevented from entering the cable from the tower end extension pipe, after installation, the device does not need to be welded and fixed with the embedded pipe, thereby avoiding the fire safety hazard caused by welding, the device is convenient to assemble and disassemble, and is convenient for future maintenance and maintenance, the tower end embedded pipe does not need to be lengthened to the exposed tower wall, thereby avoiding high-altitude welding operation, and the device is particularly suitable for projects in which the main tower is constructed by using a climbing form or projects in which the tower end embedded pipe cannot be exposed to the tower wall. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 Fig. 1 is an installation schematic view of the cable-stayed tower end clamping groove type waterproof connecting device of the embodiment of the utility model;

[0014] Figure 2 Fig. 2 is a schematic view of the cable-stayed tower end clamping groove type waterproof connecting device and the extension pipe of the embodiment of the utility model;

[0015] Figure 3 Fig. 3 is a sectional view of the cable-stayed tower end clamping groove type waterproof connecting device of the embodiment of the utility model;

[0016] Figure 4 Fig. 4 is a top view of the cable-stayed tower end clamping groove type waterproof connecting device of the embodiment of the utility model;

[0017] Figure 5 Fig. 5 is a side view of the cable-stayed tower end clamping groove type waterproof connecting device of the embodiment of the utility model;

[0018] In the drawing, 1 is an embedded pipe, 2 is a screw sleeve, 3 is a screw pin, 4 is a connecting ring, 4.1 is a clamping groove, 4.2 is a trumpet-shaped opening of the connecting ring, 5 is an extension pipe, 5.1 is a trumpet-shaped opening of the extension pipe, 6 is an HDPE outer sleeve pipe, 7 is a tower wall, and 8 is a fastening screw. DETAILED DESCRIPTION

[0019] The utility model will be further described in detail in combination with the embodiment of the drawing.

[0020] As Figure 1 , 2 , 3, 4, 5, a cable-stayed tower end slot type waterproof connection device in the embodiment, including embedded pipe 1, embedded pipe 1 is embedded in tower wall 7, embedded pipe 1 end pipe opening is provided with 4 annularly distributed through holes, the through hole is along the embedded pipe 1 radially, the distance between the through hole and the tower wall 7 is about 50-200mm. One end of the extension pipe 5 is arranged in the embedded pipe 1, the other end of the extension pipe 5 is covered with HDPE sleeve pipe 6. The through hole is respectively provided with a threaded sleeve 2, the through hole diameter is matched with the outer diameter of the threaded sleeve 2, the threaded sleeve 2 is fixed in the through hole by welding, the inner cavity of the threaded sleeve 2 is communicated with the inner cavity of the embedded pipe. The threaded sleeve 2 is pre-rotated with a stud pin 3, so that one end of the stud pin 3 is fixed in the threaded sleeve 2, and the other end extends into the inner cavity of the embedded pipe 1. The extension pipe 5 arranged in the embedded pipe 1 is sleeved with a connecting ring 4 at one end, the connecting ring 4 is provided with a plurality of annularly distributed locking holes, a locking screw 8 is rotatably arranged in the locking hole, the locking screw 8 is screwed in to realize the fixation of the connecting ring 4 on the outer periphery of the extension pipe 5; or the locking screw 8 is unscrewed to realize the disassembly of the connecting ring from the extension pipe, which is beneficial to the later maintenance and overhaul operation. Four clamping grooves 4.1 are formed on the outer periphery of the connecting ring, the stud pin 3 is clamped in the clamping groove 4.1, so that the connecting ring is fixedly connected with the embedded part.

[0021] The part of the stud pin 3 extending out of the inner cavity of the embedded pipe should be smooth, and the sharp edge should be blunt.

[0022] The clamping groove is U-shaped hook shape.

[0023] The pipe opening of the extension pipe arranged in the embedded pipe is trumpet-shaped, forming an extension pipe trumpet mouth 5.1. The upper end of the connecting ring is trumpet-shaped, forming a connecting ring trumpet mouth 4.2, the extension pipe trumpet mouth 5.1 is arranged in the connecting ring trumpet mouth 4.2, the extension pipe trumpet mouth is matched with the connecting ring trumpet mouth, so that the two are fitted together, which avoids the rainwater flowing into the extension pipe under the influence of wind.

[0024] The connecting ring is sleeved on the extension pipe and moved to the upper end of the extension pipe, and the locking screw is screwed into the extension pipe, so that the extension pipe and the connecting pipe are fixedly connected. Move the extension pipe with the connecting ring to the pipe opening of the tower end embedded pipe, align the clamping groove on the connecting ring with the stud pin extending out of the embedded pipe, push the extension pipe upwards and rotate, so that the stud pin travels along the shape of the clamping groove to the end of the clamping groove, realizing the clamping of the stud pin in the end of the clamping groove, which completes the installation of the cable-stayed tower end slot type waterproof connection device.

[0025] The structure of the present application is simple, which effectively prevents rainwater from entering the cable inside from the tower end extension pipe; after installation, it does not need to be fixed with the embedded pipe by welding, which avoids the fire safety hazard caused by welding, and is convenient to disassemble and assemble, which is convenient for future maintenance and maintenance, and does not need to lengthen the tower end embedded pipe to the exposed tower wall, which avoids high-altitude welding operation, and is especially suitable for projects using climbing form construction or projects where the tower end embedded pipe cannot be exposed to the tower wall.

[0026] In addition to the above embodiments, the utility model also includes other implementation manners, and the technical scheme formed by using equivalent transformation or equivalent replacement should fall within the protection scope of the utility model claims.

Claims

1. A slotted waterproof connection device for the end of a cable-stayed tower, characterized in that: The utility model relates to a kind of embedded pipes, including extension pipe, the extension pipe one end is located in embedded pipe, the extension pipe other end is covered with outer tube, the embedded pipe one pipe mouth periphery is respectively opened multiple annularly distributed through-holes, the through-hole is along embedded pipe radial opening, the screw sleeve is respectively threaded in the through-hole, the screw sleeve inner cavity is communicated with embedded pipe inner cavity, the screw stud is respectively rotated in the screw sleeve, the screw stud one end is fixed in screw sleeve, the other end extends to embedded pipe inner cavity, the extension pipe one end periphery located in embedded pipe is provided with connecting ring, the connecting ring is opened multiple annularly distributed clamping grooves, the clamping groove is clamped with corresponding screw stud, so that connecting ring is fixedly connected with embedded part.

2. The tower end waterproof connecting device for stay cable according to claim 1, characterized in that: The connecting ring periphery is opened multiple annularly distributed locking hole, the locking hole is rotated with locking screw, and the locking screw is rotated, so that connecting ring is fixedly connected with extension pipe.

3. The tower end water-proof connecting device for stay cable according to claim 1, characterized in that: The distance between the through-hole of the end pipe mouth of the embedded pipe and the tower wall is 50-200mm.

4. The tower end water-proof connecting device for stay cable according to claim 1, characterized in that: The pipe mouth of the extension pipe located in the embedded pipe is extension pipe bell mouth; the upper end of the connecting ring is connecting ring bell mouth, and the extension pipe bell mouth is located in the connecting ring bell mouth, and the two are attached.

5. The tower end cable gland of claim 1, wherein: The clamping groove is 3-6.

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