Adjustable cable guide pipe structure facilitating installation of built-in shock absorber

Abstract

The utility model discloses an adjustable cable guide pipe structure facilitating installation of a built-in shock absorber, and belongs to the technical field of cable guide pipes, the adjustable cable guide pipe structure comprises an inner guide pipe and an outer guide pipe, the outer guide pipe is provided with a through hole, and the inner guide pipe is located in the through hole and close to a hole opening in the top of the through hole; the inner guide pipe is rotationally installed on the outer guide pipe through a rotating shaft, and the inner guide pipe is provided with an installation hole which is formed in a penetrating mode and used for a stay cable to penetrate through. The stay cable installation structure has the advantages that it is conveniently guaranteed that the stay cable is in a centering state with the cable guide pipe opening after being installed, and then the effect of installing the built-in shock absorber at the cable guide pipe opening is conveniently achieved.

Description

Technical Field

[0001] The present application relates to the field of cable guide tubes, and in particular to an adjustable cable guide tube structure that is convenient for installing a built-in shock absorber. Background Art

[0002] A cable-stayed bridge is a bridge that uses oblique cables as the main load-bearing structure. The load on the bridge deck is transferred obliquely to the main tower and anchorages, and then transferred downward from the anchorages to each casting module through the oblique cables, thereby achieving the force and stability of the entire bridge.

[0003] In the process of connecting the inclined cables with the casting modules in the prior art, the inclined cables are usually passed through the cable guide tube fixed to the casting module so that the cable guide tube can guide and position the installation of the inclined cables. After the inclined cables are installed in the cable guide tube, built-in shock absorbers are installed at the position of the cable guide tube mouth to ensure the stability of the position of the inclined cables after installation, thereby stably traction of the casting modules. The built-in shock absorbers installed at the cable guide tube mouth usually use damping rubber blocks to buffer and reduce shock to the inclined cables.

[0004] With regard to the above-mentioned prior art, since the installation process of the inclined cable is easily affected by factors such as the linear error of the inclined cable or the installation error of the cable guide tube, it is not convenient to ensure that the inclined cable is in a centered state with the cable guide tube mouth after installation, and it is also not convenient to install the built-in shock absorber at the cable guide tube mouth. Utility Model Content

[0005] In order to ensure that the inclined cable is aligned with the cable guide tube opening after installation, and to facilitate the installation of the built-in shock absorber at the cable guide tube opening, the present application provides an adjustable cable guide tube structure that is convenient for installing the built-in shock absorber.

[0006] The present application provides an adjustable cable guide tube structure that is convenient for installing a built-in shock absorber and adopts the following technical solution:

[0007] An adjustable cable guide tube structure for facilitating installation of a built-in shock absorber comprises an inner guide tube and an outer guide tube, wherein the outer guide tube has a through hole arranged therethrough, the inner guide tube is located in the through hole and arranged near an orifice at the top of the through hole, the inner guide tube is rotatably installed on the outer guide tube via a rotating shaft, and the inner guide tube has an installation hole arranged therethrough and used for a stay cable to pass through.

[0008] By adopting the above technical scheme, after the outer conduit is pre-buried and fixed on one of the casting modules of the cable-stayed bridge, when the inclined cable is passed through the mounting hole of the inner conduit and the through-hole of the outer conduit is fixed to the casting module, the mounting hole of the inner conduit realizes the installation guiding and positioning function of the inclined cable. When position deviation occurs during the installation of the inclined cable due to factors such as the linear error of the inclined cable or the installation error of the cable conduit, the inner conduit mounting hole and the inclined cable can be aligned by rotating the inner conduit, thereby facilitating the installation of the built-in shock absorber in the mounting hole of the inner conduit. At the same time, after the inner conduit is aligned with the inclined cable and the built-in shock absorber is installed, the built-in shock absorber is subjected to uniform force, which is convenient for stable shock absorption during the subsequent traction of the inclined cable on the casting module, and is beneficial to ensuring the service life of the inner conduit.

[0009] Optionally, the inner conduit and the outer conduit are fixed by casting UHPC.

[0010] By adopting the above technical solution, after the inner duct guides the inclined cable, it is fixed to the outer duct through UHPC, i.e. ultra-high performance concrete, which is beneficial to fully ensure the connection stability between the inner duct and the outer duct and the overall structural strength after the inner duct and the outer duct are connected, and thus is beneficial to ensure the subsequent service life of the cable duct as a whole.

[0011] Optionally, the perforated hole wall is provided with two sliding grooves arranged opposite to each other, and the sliding grooves extend to the top of the outer tube. Two rotating shafts are arranged corresponding to the sliding grooves. The rotating shaft includes a sliding part and a rotating part. The sliding part is slidably fitted in the sliding groove, and one end of the rotating part is fixedly installed on the inner tube, and the other end is rotatably installed on the sliding part.

[0012] By adopting the above technical solution, the two sliding parts of the rotating shaft can be slid into the two sliding grooves respectively to quickly realize the rotational installation of the inner and outer tubes. The cooperation between the sliding parts and the sliding grooves makes the installation of the inner and outer tubes convenient and fast.

[0013] Optionally, the sliding portion is fixedly mounted on the outer conduit by bolts.

[0014] By adopting the above technical solution, the setting of the bolt tightening is conducive to further ensuring the stability of the position of the sliding part after being installed in the sliding groove, thereby facilitating the subsequent stable rotation of the inner guide tube.

[0015] Optionally, the cross-sections of the sliding portion and the sliding groove are both T-shaped.

[0016] By adopting the above technical solution, the sliding part is not easy to fall out of the sliding groove when sliding in the sliding groove, which is beneficial to further ensure the stability of the sliding part when sliding in the sliding groove.

[0017] Optionally, the perforated hole wall is provided with two sliding grooves arranged opposite to each other, and the sliding grooves extend to the top of the outer tube. Two rotating shafts are provided corresponding to the sliding grooves, and the rotating shaft includes a first shaft body and a second shaft body. The first shaft body is fixedly installed on the outer side wall of the inner tube, and the diameter of the second shaft body is larger than the diameter of the first shaft body and is coaxially fixedly connected to the end of the second shaft body away from the inner tube, and the second shaft body slides in the sliding groove.

[0018] By adopting the above technical solution, the arrangement of the first axis and the second axis facilitates the operation of installing the inner catheter and the outer catheter, and the cooperation between the second axis and the sliding groove during the installation of the inner catheter plays a limiting role during the installation of the inner catheter, which is beneficial to ensure the stability of the position of the inner catheter during installation.

[0019] Optionally, a movable groove is formed at one end of the second shaft body away from the first shaft body, and a locking assembly is arranged in the movable groove. The locking assembly includes a locking spring and a locking column. The locking column is slidably fitted in the movable groove, and the locking column is coaxially arranged with the second shaft body. The locking spring is arranged in the movable groove and is used to apply an elastic force to the locking column to move away from the second shaft body. The groove wall of the sliding groove is provided with a locking groove corresponding to the locking column and plug-fitting therewith.

[0020] By adopting the above technical solution, when the second shaft body slides in the sliding groove to a state where the locking column and the locking groove are directly opposite, the locking column is inserted into the locking groove under the elastic force of the locking spring, thereby further limiting the position of the second shaft body, which is beneficial to further ensure the stability of the second shaft body when it finally drives the inner guide tube to rotate together.

[0021] Optionally, the inner catheter is provided with a fixing assembly fixed to the outer catheter, the fixing assembly includes a fixing screw and a fixing sleeve, the fixing screw is rotatably mounted on the outer circumference of the inner catheter and is located at the bottom of the inner catheter, and the fixing sleeve is sleeved and threadedly engaged with the fixing screw.

[0022] By adopting the above technical solution, after the inner catheter is rotated to the specified position, the fixing screw is first rotated to make the fixing sleeve perpendicular to the inner wall of the outer catheter, and then the fixing sleeve is rotated to make the fixing sleeve press against the inner wall of the outer catheter to support the inner catheter, thereby achieving preliminary fixation of the position of the inner catheter. The operation is simple and is conducive to ensuring the stability of the position of the inner catheter and the outer catheter when they are firmly fixed.

[0023] Optionally, a buffer pad is fixedly connected to one end of the fixing sleeve away from the fixing screw.

[0024] By adopting the above technical solution, the buffer pad is provided so that when the fixed sleeve is pressed against the outer conduit, the fixed sleeve and the inner wall of the outer conduit are not easily worn due to mutual friction.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. When position deviation occurs during the installation of the cable due to factors such as the linear error of the cable or the installation error of the cable guide tube, the inner guide tube can be rotated to align the mounting hole of the inner guide tube with the cable, thereby facilitating the installation of the built-in shock absorber in the mounting hole of the inner guide tube.

[0027] 2. After the inner duct guides the inclined cable, it is fixed to the outer duct through UHPC, i.e. ultra-high performance concrete, which is beneficial to fully ensure the connection stability between the inner duct and the outer duct and the overall structural strength after the inner duct and the outer duct are connected, which is beneficial to ensure the subsequent service life of the cable duct as a whole.

[0028] 3. The inner and outer conduits can be quickly installed by sliding the two sliding parts of the rotating shaft into the two sliding grooves respectively. The cooperation between the sliding parts and the sliding grooves makes the installation of the inner and outer conduits convenient and fast.

[0029] 4. The arrangement of the first axis and the second axis facilitates the operation of installing the inner and outer catheters, and the cooperation between the second axis and the sliding groove during the installation of the inner catheter serves to limit the position of the inner catheter, which is beneficial to ensure the stability of the position of the inner catheter during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0031] Figure 2 It is a schematic diagram of the connection structure of the inner catheter and the outer catheter in Example 1 of the present application.

[0032] Figure 3 It is a schematic diagram of the structure of the inner conduit and the outer conduit after casting in Example 1 of the present application.

[0033] Figure 4 It is a schematic diagram of the connection structure of the inner catheter and the outer catheter in Example 2 of the present application.

[0034] Description of reference numerals:

[0035] 1. Inner conduit; 2. Outer conduit; 3. Perforation; 4. Mounting hole; 5. Sliding groove; 6. Rotating shaft; 601. Sliding part; 602. Rotating part; 603. First shaft body; 604. Second shaft body; 7. Fixed screw; 8. Fixed sleeve; 9. Buffer pad; 10. Sliding groove; 11. Movable groove; 12. Positioning spring; 13. Positioning column; 14. Positioning groove. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-4 This application is described in further detail.

[0037] Example 1.

[0038] The present application embodiment discloses an adjustable cable guide tube structure that facilitates the installation of a built-in shock absorber. Figure 1 and Figure 2 The adjustable cable guide tube structure for facilitating the installation of the built-in shock absorber comprises an inner guide tube 1 and an outer guide tube 2, wherein the outer guide tube 2 is fixedly installed on the casting module constituting the bridge by pre-embedding, the outer guide tube 2 has a through hole 3 coaxially arranged therethrough, the outer diameter of the inner guide tube 1 is smaller than the aperture of the through hole 3, the inner guide tube 1 is located in the through hole 3 and is arranged near the orifice at the top of the through hole 3, the inner guide tube 1 has a through mounting hole 4, and the mounting hole 4 is used for the oblique cable to pass through.

[0039] Reference Figure 2 The hole wall of the through hole 3 is provided with two sliding grooves 5 arranged opposite to each other, and both sliding grooves 5 extend to the top of the outer conduit 2. Two rotating shafts 6 are arranged outside the inner conduit 1, and the two rotating shafts 6 are distributed along the radial direction of the inner conduit 1 and are respectively arranged corresponding to the two sliding grooves 5. In the embodiment of the present application, the rotating shaft 6 includes a sliding portion 601 and a rotating portion 602, wherein the sliding portion 601 is slidingly matched in the sliding groove 5, and one end of the rotating portion 602 is fixedly installed on the inner conduit 1, and the other end is rotatably installed on the sliding portion 601, so as to realize the installation of the inner conduit 1 and the outer conduit 2 through the cooperation of the sliding portion 601 and the sliding groove 5.

[0040] Continue to refer to Figure 2 The cross-sections of the sliding part 601 and the sliding groove 5 are both T-shaped, so that the sliding part 601 is not easy to fall out of the sliding groove 5 when sliding in the sliding groove 5, which is conducive to ensuring the stability of the sliding part 601 when sliding in the sliding groove 5. After the two sliding parts 601 slide in the two sliding grooves 5 to the required installation positions, the two sliding parts 601 are respectively fixed in the sliding groove 5 by bolts that penetrate and match their own threads, so as to ensure the stability of the position of the sliding part 601 after sliding, thereby ultimately ensuring the stability of the inner conduit 1 when rotating around the axis of the rotating part 602.

[0041] Reference Figure 2In order to fully ensure the stability of the position of the inner guide tube 1 after rotation, the inner guide tube 1 is provided with a fixing assembly, which includes a fixing screw 7 and a fixing sleeve 8, wherein two fixing screws 7 and two fixing sleeves 8 are provided, and the two fixing screws 7 are both installed on the outer circumference of the inner guide tube 1 by hinged rotation and distributed along the radial direction of the inner guide tube 1, and the two fixing sleeves 8 are respectively sleeved and threadedly matched with the two fixing screws 7. When the inner guide tube 1 is rotated to the specified position, that is, the position aligned with the inclined cable, the two fixing screws 7 are rotated in turn so that the two fixing sleeves 8 are perpendicular to the inner wall of the outer guide tube 2, and then the two fixing sleeves 8 are rotated in turn so that the two fixing sleeves 8 are respectively pressed against the inner wall of the outer guide tube 2 to support the inner guide tube 1, thereby achieving preliminary fixation of the position of the inner guide tube 1.

[0042] Continue to refer to Figure 2 The ends of the two fixed sleeves 8 away from the two fixed screws 7, that is, the ends of the two fixed sleeves 8 close to the wall of the through hole 3, are fixedly connected with a buffer pad 9. In the embodiment of the present application, the material of the buffer pad 9 is selected to be rubber, so that when the fixed sleeve 8 is pressed against the external catheter 2, the fixed sleeve 8 and the inner wall of the external catheter 2 are not prone to wear caused by mutual friction.

[0043] Reference Figure 2 and Figure 3 In order to fully ensure the stability of the relative position between the inner duct 1 and the outer duct 2 after the inner duct 1 guides the inclined cable, as well as the overall structural strength after the inner duct 1 and the outer duct 2 are connected, the inner duct 1 and the outer duct 2 are initially fixed by a fixing sleeve 8 and a fixing screw 7 and then finally firmly fixed by pouring UHPC, i.e., ultra-high performance concrete.

[0044] The implementation principle of an adjustable cable guide tube structure for facilitating the installation of a built-in shock absorber in an embodiment of the present application is as follows: after the outer guide tube 2 is pre-buried and fixed to one of the casting modules of the cable-stayed bridge, the inclined cable is passed through the mounting hole 4 of the inner guide tube 1 and the through hole 3 of the outer guide tube 2 is fixed to the casting module, the mounting hole 4 of the inner guide tube 1 realizes the installation guiding and positioning function for the inclined cable. When the linear error of the inclined cable or the installation error of the cable guide tube causes positional deviation during the installation of the inclined cable, that is, the phenomenon of misalignment with the inner guide tube 1 occurs, the mounting hole 4 of the inner guide tube 1 and the inclined cable can be aligned by rotating the inner guide tube 1, thereby facilitating the installation of the built-in shock absorber in the mounting hole 4 of the inner guide tube 1. In addition, after the inner guide tube 1 is aligned with the inclined cable and the built-in shock absorber is installed, and the inner guide tube 1 and the outer guide tube 2 are finally firmly cast and fixed, the built-in shock absorber is subjected to uniform force, which is convenient for stably realizing stable shock absorption during the subsequent traction of the inclined cable on the casting module, which is beneficial to ensuring the service life of the cable guide tube structure.

[0045] Example 2.

[0046] Reference Figure 4 The difference between the embodiment of the present application and embodiment 1 mainly lies in that the installation methods of the inner conduit 1 and the outer conduit 2 are different. In the embodiment of the present application, the wall of the through hole 3 of the outer conduit 2 is provided with two sliding grooves 10 arranged opposite to each other, and the sliding groove 10 extends to the top of the outer conduit 2. Two rotating shafts 6 are arranged outside the inner conduit 1. The two rotating shafts 6 are distributed along the radial direction of the inner conduit 1 and are respectively arranged corresponding to the two sliding grooves 5. In the embodiment of the present application, the rotating shaft 6 includes a first shaft body 603 and a second shaft body 604, and the cross-sections of the first shaft body 603 and the second shaft body 604 are both circular.

[0047] The first shaft body 603 is fixedly installed on the outer wall of the inner catheter 1. The diameter of the second shaft body 604 is larger than the diameter of the first shaft body 603 and is coaxially fixedly connected to the end of the second shaft body 604 away from the inner catheter 1. The two second shaft bodies 604 are respectively slidably fitted in the two sliding grooves 10 to facilitate the rapid installation of the inner catheter 1 and the outer catheter 2.

[0048] Continue to refer to Figure 4 In order to further ensure the stability of the inner catheter 1 and the outer catheter 2 when they are rotated after installation, a coaxially arranged movable groove 11 is opened at the end of the second shaft body 604 away from the first shaft body 603, and a locking component is arranged in the movable groove 11. The locking component includes a locking spring 12 and a locking column 13. The locking column 13 is slidably fitted in the movable groove 11, and the locking column 13 is coaxially arranged with the second shaft body 604. One end of the locking spring 12 is fixedly connected to the groove wall of the movable groove 11 away from its own groove, and the other end of the locking spring 12 is fixedly connected to the locking column 13, so that the locking spring 12 applies an elastic force to the locking column 13 to move in the direction away from the second shaft body 604.

[0049] The groove walls of the two sliding grooves 10 are provided with locking grooves 14 that correspond to and are plugged with the two locking posts 13. When the second shaft body 604 slides in the sliding groove 10 to a state where the locking post 13 and the locking groove 14 are directly opposite, the locking post 13 is inserted into the locking groove 14 under the elastic force of the locking spring 12, thereby further limiting the position of the second shaft body 604. In order to facilitate the insertion of the locking post 13 into the locking groove 14, a chamfer is provided at one end of the locking post 13 close to the locking groove 14, so that there is a certain gap transition when the locking post 13 is inserted into the locking groove 14.

[0050] The implementation principle of the embodiment of the present application is the same as that of Embodiment 1, so it will not be repeated here.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An adjustable cable guide tube structure for facilitating installation of a built-in shock absorber, characterized in that: The invention comprises an inner conduit (1) and an outer conduit (2), wherein the outer conduit (2) has a through hole (3) arranged therethrough, the inner conduit (1) is located in the through hole (3) and is arranged close to the opening at the top of the through hole (3), the inner conduit (1) is rotatably mounted on the outer conduit (2) via a rotating shaft (6), and the inner conduit (1) has a mounting hole (4) arranged therethrough and used for a stay cable to pass through.

2. The adjustable cable guide tube structure for facilitating installation of a built-in shock absorber according to claim 1, characterized in that: The inner conduit (1) and the outer conduit (2) are fixed by pouring UHPC.

3. The adjustable cable guide tube structure for facilitating installation of a built-in shock absorber according to claim 1, characterized in that: The through hole (3) is provided with two sliding grooves (5) arranged opposite to each other, and the sliding grooves (5) extend to the top of the outer tube (2). Two rotating shafts (6) are provided corresponding to the sliding grooves (5). The rotating shaft (6) comprises a sliding part (601) and a rotating part (602). The sliding part (601) is slidingly engaged in the sliding groove (5), and one end of the rotating part (602) is fixedly mounted on the inner tube (1), and the other end is rotatably mounted on the sliding part (601).

4. The adjustable cable guide tube structure for facilitating installation of a built-in shock absorber according to claim 3, characterized in that: The sliding portion (601) is fixedly mounted on the outer conduit (2) by means of bolts.

5. The adjustable cable guide tube structure for facilitating installation of a built-in shock absorber according to claim 3, characterized in that: The cross sections of the sliding portion (601) and the sliding groove (5) are both T-shaped.

6. The adjustable cable guide tube structure for facilitating installation of a built-in shock absorber according to claim 1, characterized in that: The wall of the through hole (3) is provided with two sliding grooves (10) arranged opposite to each other, and the sliding grooves (10) extend to the top of the outer tube (2). Two rotating shafts (6) are arranged corresponding to the sliding grooves (10), and the rotating shaft (6) includes a first shaft body (603) and a second shaft body (604). The first shaft body (603) is fixedly installed on the outer wall of the inner tube (1), the diameter of the second shaft body (604) is larger than the diameter of the first shaft body (603) and is coaxially fixedly connected to the end of the second shaft body (604) away from the inner tube (1), and the second shaft body (604) is slidably fitted in the sliding groove (10).

7. The adjustable cable guide tube structure for facilitating installation of a built-in shock absorber according to claim 6, characterized in that: A movable groove (11) is provided at one end of the second shaft (604) away from the first shaft (603), and a locking assembly is arranged in the movable groove (11). The locking assembly includes a locking spring (12) and a locking column (13). The locking column (13) is slidably engaged in the movable groove (11). The locking column (13) is coaxially arranged with the second shaft (604). The locking spring (12) is arranged in the movable groove (11) and is used to apply an elastic force to the locking column (13) to move in a direction away from the second shaft (604). The groove wall of the sliding groove (10) is provided with a locking groove (14) corresponding to the locking column (13) and plug-fitting therewith.

8. The adjustable cable guide tube structure for facilitating installation of a built-in shock absorber according to claim 1, characterized in that: The inner conduit (1) is provided with a fixing assembly fixed to the outer conduit (2), the fixing assembly comprising a fixing screw (7) and a fixing sleeve (8), the fixing screw (7) being rotatably mounted on the outer peripheral surface of the inner conduit (1) and being located at the bottom of the inner conduit (1), and the fixing sleeve (8) being sleeved and threadedly engaged with the fixing screw (7).

9. The adjustable cable guide tube structure for facilitating installation of a built-in shock absorber according to claim 8, characterized in that: One end of the fixing sleeve (8) away from the fixing screw rod (7) is fixedly connected to a buffer pad (9).

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