A structure capable of arbitrarily adjusting the steering direction of a cable in a steel pipe and a construction method thereof

Abstract

The present invention belongs to the technical field of steering cables in bridge engineering, and more particularly to a structure capable of arbitrarily adjusting the steering of cables in steel pipes and a construction method thereof. The present invention achieves the purpose that the cables can be arbitrarily steered and adjusted within a certain range, and the steering structure can be used stably for a long time by arranging a slide rail base unit, a spherical trough unit and a rotating spherical unit on the steel pipe unit. The present invention has the following advantages: First, the steering structure for the cable is reasonable and effective, and the starting steering point, steering direction and steering angle of the cable can be arbitrarily adjusted within a certain range; second, the disassembly, assembly, maintenance and normal use of the steering structure for the cable are convenient, fast, flexible and efficient; third, the internal wearing parts of the steering structure are flexibly connected to ensure sufficient strength for use under the premise of convenient replacement.

Description

Technical Field

[0001] The invention belongs to the technical field of cable steering in bridge engineering, and in particular relates to a structure capable of arbitrarily adjusting the steering of a cable in a steel pipe and a construction method thereof. Background Art

[0002] In recent years, bridge construction has developed rapidly, cable-stayed bridges have been widely used in large-span bridges, and the forms of bridge towers have also become rich and diverse. The structure of a multi-legged steel tube concrete composite main tower is adopted, and the multi-legged steel tube is used to change the support angle and bending radius to construct a main tower shape that is magnificent and beautiful in appearance.

[0003] This type of multi-limb steel tube concrete composite main tower is usually connected by branch pipes between the main pipes, and the steering structure of the cable inside the branch pipe has also become one of the difficulties in design and construction. Commonly used cable steering devices include steering blocks and steering saddles, which are difficult to achieve precise adjustment of the steering angle support direction, have large friction resistance, severe cable wear, and obvious stress concentration, which is not conducive to the transmission of bridge cables and poses a safety hazard to the long-term, continuous, and healthy operation of the bridge.

[0004] Therefore, it is necessary to design a cable steering structure that can realize arbitrary steering adjustment of the cable inside the steel pipe, and has a stable force structure and a long effective service life.

[0005] A Chinese utility model patent with patent publication number CN 205501827U and publication date 2016.08.24 discloses a horizontal cable bogie for a catwalk vibration damping system, which includes at least a steering base fixed on the catwalk and a steering device for adjusting the direction of the cable, one end of the steering base is connected to a modular square steel pipe, and the other end of the steering base is movably connected to the steering device.

[0006] However, the horizontal cable bogie in the utility model patent has the problem of a small adjustable angle range of the cables, that is, it cannot be adjusted three-dimensionally in the entire space, and the connection strength inside the entire frame structure is not sufficient. The cables will cause the frame structure to break within a relatively short service life. Summary of the invention

[0007] The present invention provides a structure capable of arbitrarily adjusting the steering of a cable in a steel pipe and a construction method thereof. The structure can achieve the purpose that the cable can be arbitrarily steered and adjusted within a certain range and the steering structure can be used stably for a long time by arranging a slide rail base unit, a spherical trough unit and a rotating spherical unit on the steel pipe unit.

[0008] The technical solution adopted by the present invention to solve the above-mentioned problem is: a structure that can arbitrarily adjust the steering direction of the cable in the steel pipe, including a steel pipe unit, a slide rail base unit arranged in the steel pipe unit, a spherical slot unit arranged on the slide rail base unit and sliding along the axial direction of the steel pipe unit, and a rotating spherical unit arranged on the spherical slot unit and used for installing the cable.

[0009] A further preferred technical solution is that the steel pipe unit includes a steel pipe body, a fixing stud disposed on the inner side of the steel pipe body and used for mounting the slide rail base unit, and a fastening nut disposed on the fixing stud.

[0010] A further preferred technical solution is that the slide rail base unit includes a mounting block arranged on the inner side surface of the steel pipe body, a mounting hole arranged on the mounting block and used to pass the fixing stud, a slide rail block arranged on the inner side surface of the mounting block, and a track opening arranged on the slide rail block and used to insert and fix the spherical trough body unit.

[0011] A further preferred technical solution is that the spherical trough body unit includes a U-shaped plate that is clamped on the slide rail block, a clamping bolt that is arranged on the U-shaped plate and is used to clamp and fix the U-shaped plate by passing through the track opening, a mounting column that is arranged on the U-shaped plate, and a spherical trough body block that is arranged on the mounting column and is used to clamp the inserted rotating sphere unit.

[0012] A further preferred technical solution is that the rotating spherical unit includes a mounting sphere arranged on the spherical slot block and having a diameter greater than the diameter of the circular slot of the spherical slot block, a movable sphere arranged on the mounting sphere, and a radial channel arranged on the movable sphere and used to pass the cable.

[0013] A further preferred technical solution is that the rotating spherical unit further comprises a ball embedded in the radial channel, and the diameter of the movable spherical body is larger than that of the mounting spherical body.

[0014] A further preferred technical solution is that the rotating spherical unit further comprises a spherical screw connection portion which is arranged on the movable spherical body and is used for mounting the mounting spherical body.

[0015] A further preferred technical solution is that the spherical threaded connection portion includes a spherical groove arranged on the movable sphere and used to set the mounting sphere, a chordal groove arranged on the movable sphere, a radial opening arranged between the spherical groove and the chordal groove, a radial threaded connection groove arranged on the mounting sphere, and a mounting bolt whose tail is located in the chordal groove and passes through the radial opening for threading the mounting sphere.

[0016] A further preferred technical solution is that: a tooth for driving the mounting bolt to rotate is provided on the tail of the mounting bolt, and the chordal slot is communicated with the radial channel.

[0017] A construction method for a structure capable of arbitrarily adjusting the steering of a cable in a steel pipe comprises the following steps in sequence:

[0018] S1, the rotating spherical unit and the spherical slot unit are initially engaged, and the cable is passed through the rotating spherical unit to obtain a steering positioning body;

[0019] S2, installing the steering positioning body on the slide rail base unit, adjusting the axial position, and fixing it to obtain the cable steering structure body;

[0020] S3. Screw the cable steering structure body into the steel tube unit to obtain a final cable steering structure in the steel tube.

[0021] The present invention has the following advantages: first, the steering structure for the cable is reasonable and effective, and the starting turning point, turning direction and turning angle of the cable can be adjusted arbitrarily within a certain range; second, the disassembly, assembly, maintenance and normal use of the steering structure for the cable are convenient, fast, flexible and efficient; third, the internal wearing parts of the steering structure are movably connected to ensure sufficient strength for use while facilitating replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention.

[0023] Figure 2 It is a structural schematic diagram of the steel pipe unit in the present invention.

[0024] Figure 3 It is a structural schematic diagram of the slide rail base unit in the present invention.

[0025] Figure 4 It is a schematic structural diagram of the spherical tank unit in the present invention.

[0026] Figure 5 It is a schematic diagram of the position structure of the rotating spherical unit in the present invention.

[0027] Figure 6 It is a schematic diagram of the position structure of the chordal slot in the present invention when viewed from a top view. DETAILED DESCRIPTION

[0028] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention.

[0029] Example: As attached Figure 1 , 2, 3, 4, 5 and attached Figure 6 As shown, a structure capable of arbitrarily adjusting the steering direction of a cable in a steel tube comprises a steel tube unit 1, a slide rail base unit 2 arranged in the steel tube unit 1, a spherical slot unit 3 arranged on the slide rail base unit 2 and sliding axially along the steel tube unit 1, and a rotating spherical unit 4 arranged on the spherical slot unit 3 and used for installing a cable a.

[0030] In this embodiment, the cable a extends from one end of the steel tube unit 1 and is extended at the other end, and the extended end needs to be turned, wherein the steel tube unit 1 is a fixed "base", the slide rail base unit 2 can select a suitable installation position on the steel tube unit 1, the spherical trough unit 3 can slide on the slide rail base unit 2, and the cable a passes through the rotating sphere unit 4, so that the above-mentioned one selective installation and one sliding adjustment can ensure that the starting turning position of the cable a is flexible and adjustable. After all, an inappropriate cable turning starting point will increase the stress on the steel tube unit 1 and eventually damage the steel tube unit 1.

[0031] In addition, the steering angle and steering direction of the cable a depend on the stress condition of the external connection of its extended end. The cable steering structure in this embodiment can ensure that the steering direction and steering angle of the cable a can be adjusted arbitrarily within a certain range.

[0032] The steel pipe unit 1 includes a steel pipe body 101 , a fixing stud 102 disposed on the inner side of the steel pipe body 101 and used for mounting the slide rail base unit 2 , and a fastening nut 103 disposed on the fixing stud 102 .

[0033] In this embodiment, the steel pipe body 101 is made of high-strength steel used in existing bridges, the fixing studs 102 are integrally formed therewith and then fixed by welding, and the fastening nut 103 is essentially a steel plate with threaded holes.

[0034] The slide rail base unit 2 includes a mounting block 201 arranged on the inner side of the steel pipe body 101, a mounting hole 202 arranged on the mounting block 201 and used to pass the fixing stud 102, a slide rail block 203 arranged on the inner side of the mounting block 201, and a track opening 204 arranged on the slide rail block 203 and used to insert and fix the spherical slot unit 3.

[0035] In this embodiment, a plurality of the track openings 204 are arranged in a row on the slide rail block 203, ensuring that the position of the spherical slot body unit 3 can be flexibly adjusted along the axial direction of the steel pipe body 101, and the number of the track blocks 203 is two, ensuring that the spherical slot body unit 3 can be stably fixed.

[0036] The spherical slot body unit 3 includes a U-shaped plate 301 that is clamped on the slide rail block 203, a clamping bolt 302 that is arranged on the U-shaped plate 301 and passes through the track opening 204 to clamp and fix the U-shaped plate 301, a mounting column 303 that is arranged on the U-shaped plate 301, and a spherical slot body block 304 that is arranged on the mounting column 303 and is used to clamp the inserted rotating sphere unit 4.

[0037] In this embodiment, the locking bolt 302 can be installed in any pair of the track openings 204, and the spherical slot block 304 has a closing structure, which ensures that the rotating spherical unit 4 will not fall off during normal use without significant wear and tear.

[0038] In addition, when the rotating sphere unit 4 is severely worn and needs to be replaced, but the spherical slot body block 304 can still be used, the spherical slot body block 304 can be cut open first, and then a new rotating sphere unit 4 is inserted, and finally the spherical slot body block 304 is welded to complete the spherical slot body block 304, so as to ensure that the spherical slot body unit 3 has a certain degree of advantage of convenient disassembly and replacement.

[0039] The rotating spherical unit 4 includes a mounting spherical body 401 disposed on the spherical slot block 304 and having a diameter greater than the diameter of the circular slot of the spherical slot block 304, a movable spherical body 402 disposed on the mounting spherical body 401, and a radial channel 403 disposed on the movable spherical body 402 and used to pass the cable a. The rotating spherical unit 4 also includes a ball embedded in the radial channel 403, and the diameter of the movable spherical body 402 is greater than that of the mounting spherical body 401.

[0040] In this embodiment, the diameter of the mounting ball 401 is larger than the diameter of the circular notch of the spherical slot block 304. In principle, it is ensured that the mounting ball 401 can be replaced and repaired synchronously with the spherical slot unit 3 to ensure that the entire cable steering structure can be used efficiently. The mounting ball 401 and the movable ball 402 as a whole are the direct action parts for the cable a to achieve steering adjustment. They are located in the spherical slot block 304 and can be adjusted arbitrarily within the maximum rotation angle range to ensure the rotation flexibility of the cable a.

[0041] In addition, the method of "fixing the small ball and rotating the large ball" is also adopted to make the rotation action of the rotating spherical unit 4 simpler and more effective, and avoid the problems of being unable to rotate and too much resistance.

[0042] The rotating sphere unit 4 also includes a sphere screw-connecting portion 404 disposed on the movable sphere 402 and used to mount the mounting sphere 401. The sphere screw-connecting portion 404 includes a spherical groove 404a disposed on the movable sphere 402 and used to mount the mounting sphere 401, a chordal slot 404b disposed on the movable sphere 402, a radial opening 404c disposed between the spherical groove 404a and the chordal slot 404b, a radial screw-connecting groove 404d disposed on the mounting sphere 401, and a mounting bolt 404e whose tail is located in the chordal slot 404b and passes through the radial opening 404c and is used to screw the mounting sphere 401. The tail of the mounting bolt 404e is provided with teeth for driving the mounting bolt 404e to rotate, and the chordal slot 404b is connected to the radial channel 403.

[0043] In this embodiment, the purpose of using the ball screw connection part 404 is to make the relatively easy-to-wear mounting ball 401 removable, so that the rotating ball unit 4 only needs to replace the mounting ball 401 for long-term use, and the replacement cycle of the movable ball 402 is greatly extended. This is very necessary, wherein the use method and advantages of the ball screw connection part 404 are as follows.

[0044] First, before the initial installation, the installation ball 401 is first installed into the spherical slot block 304, and then the rod of the installation bolt 404e is inserted into the radial opening 404c, so that the rod and the tail can be smoothly screwed into a complete spherical bolt. In this process, the tail is pre-placed into the chordal slot 404b and fixed by the rack with its own teeth. The installation can be smoothly performed by rotating the rod;

[0045] Second, the ball bolt is still fixed by the rack, and then the mounting ball 401 is rotated and installed until the mounting ball 401 is tightly pressed against the elastic sheet on the spherical groove 404a. At this time, the mounting ball 401 is installed, the fixing rack is withdrawn, and the cable a is inserted into the radial channel 403 for use.

[0046] Thirdly, the ball bolt is movably connected to the movable ball 402 instead of being fixed on the movable ball 402. The purpose is that even if the ball bolt is twisted or broken, the movable ball 402 does not need to be replaced, thereby minimizing the replacement cost. The reason why the tail of the ball bolt is not set on the installation ball 401 is that the installation ball 401 is smaller in size and needs to rub against the spherical slot block 304 all the time. Therefore, opening a bolt slot on the installation ball 401 will greatly reduce the structural integrity and strength of the installation ball 401.

[0047] Fourthly, the chord-wise slot 404b is connected to the radial channel 403, so as to facilitate the insertion and removal of the rack and ensure that the tail of the ball bolt can be firmly fixed.

[0048] A construction method for a structure capable of arbitrarily adjusting the steering of a cable in a steel pipe comprises the following steps in sequence:

[0049] S1, the rotating spherical unit 4 and the spherical slot unit 3 are initially engaged, and the cable a is passed through the rotating spherical unit 4 to obtain a steering positioning body;

[0050] S2, installing the steering positioning body on the slide rail base unit 2, and adjusting the axial position, and fixing it to obtain the cable steering structure body;

[0051] S3, screwing the main body of the cable steering structure into the steel tube unit 1 to obtain a final cable steering structure in the steel tube.

[0052] In this embodiment, the locking relationship between the spherical trough unit 3 and the rotating spherical unit 4 can be set accordingly before the spherical trough unit 3 is cast. When the rotating spherical unit 4 is worn to a smaller size and cannot be fixed smoothly, it is time to replace it. At this time, it is also easy to take it out of the spherical trough unit 3. When installing the new rotating spherical unit 4, the spherical trough unit 3 can be cut open first and then welded closed.

[0053] In addition, the slide rail base unit 2 in the steel pipe unit 1 and the spherical trough unit 3 on the slide rail base unit 2 both have a sliding adjustment function, which can ensure that the cable has a flexible starting steering position adjustment function in the rotating sphere unit 4, and ensure that the cable has a suitable starting steering position, steering direction and steering angle, so that it can be stably used for tensioning and reinforcement in the bridge structure.

[0054] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the present invention. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A structure capable of arbitrarily adjusting the steering of a cable in a steel tube, characterized in that: The invention comprises a steel pipe unit (1), a slide rail base unit (2) arranged in the steel pipe unit (1), a spherical slot unit (3) arranged on the slide rail base unit (2) and sliding along the axial direction of the steel pipe unit (1), and a rotating spherical unit (4) arranged on the spherical slot unit (3) and used for installing a cable (a). The steel pipe unit (1) comprises a steel pipe body (101), a fixing stud (102) arranged on the inner side of the steel pipe body (101) and used for mounting the slide rail base unit (2), and a fastening nut (103) arranged on the fixing stud (102). The slide rail base unit (2) comprises a mounting block (201) arranged on the inner side of the steel pipe body (101), a mounting hole (202) arranged on the mounting block (201) and used to pass the fixing stud (102), a slide rail block (203) arranged on the inner side of the mounting block (201), and a track opening (204) arranged on the slide rail block (203) and used to insert and fix the spherical slot unit (3). The spherical slot body unit (3) comprises a U-shaped plate (301) that is engaged with the slide rail block (203), an engagement bolt (302) that is disposed on the U-shaped plate (301) and is used to engage and fix the U-shaped plate (301) by passing through the track opening (204), a mounting column (303) disposed on the U-shaped plate (301), and a spherical slot body block (304) that is disposed on the mounting column (303) and is used to engage with the already inserted rotating spherical unit (4). The rotating spherical unit (4) comprises a mounting sphere (401) arranged on the spherical slot block (304) and having a diameter greater than the diameter of the circular slot of the spherical slot block (304), a movable sphere (402) arranged on the mounting sphere (401), and a radial hole (403) arranged on the movable sphere (402) and used for passing the cable (a). The rotating spherical unit (4) further comprises a ball embedded in the radial hole (403); the movable spherical body (402) has a larger diameter than the mounting spherical body (401); The rotating spherical unit (4) further comprises a spherical screw connection portion (404) which is arranged on the movable spherical body (402) and is used for mounting the mounting spherical body (401).

2. The structure capable of arbitrarily adjusting the steering of the cable in the steel tube according to claim 1, characterized in that: The ball screw connection portion (404) includes a spherical groove (404a) arranged on the movable ball (402) and used to set the mounting ball (401), a chordal groove (404b) arranged on the movable ball (402), a radial opening (404c) arranged between the spherical groove (404a) and the chordal groove (404b), a radial screw connection groove (404d) arranged on the mounting ball (401), and a mounting bolt (404e) whose tail is located in the chordal groove (404b) and passes through the radial opening (404c) and is used to screw the mounting ball (401).

3. The structure capable of arbitrarily adjusting the steering of the cable in the steel tube according to claim 2, characterized in that: A tooth for driving the mounting bolt (404e) to rotate is provided on the tail of the mounting bolt (404e), and the chord-wise slot (404b) is in communication with the radial hole (403).

4. A construction method for a structure capable of arbitrarily adjusting the steering of a cable in a steel pipe as claimed in claim 1, characterized in that The following steps are included in sequence: S1, the rotating spherical unit (4) and the spherical slot unit (3) are initially engaged, and the cable (a) is passed through the rotating spherical unit (4) to obtain a steering positioning body; S2, installing the steering positioning body on the slide rail base unit (2), adjusting the axial position, and fixing it to obtain a cable steering structure body; S3, screwing the main body of the cable steering structure into the steel tube unit (1) to obtain a final cable steering structure in a steel tube.

Images