Inhaul cable tensioning device

Abstract

The invention belongs to the technical field of building construction, and discloses an inhaul cable tensioning device which comprises a supporting assembly, a driving assembly and a bearing assembly. The inhaul cable is movably connected to the supporting assembly, the driving assembly comprises a movable part and a fixed part, the fixed part is arranged on the supporting assembly, the movable part can be arranged on the fixed part in a sliding mode in the tensioning direction, the bearing assembly comprises a bearing part, the bearing part is rotatably connected to the movable part and is configured to be connected to the inhaul cable, and when the movable part slides in the tensioning direction, the movable part can slide in the tensioning direction. The bearing part can rotate relative to the movable part to drive the inhaul cable to rotate around the axis of the inhaul cable. By means of the arrangement, the inhaul cable tensioning device can improve the safety of inhaul cable construction, and the construction requirement is met.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a cable tensioning device. Background Art

[0002] Cable-stayed bridges generally use finished cable-stayed cables as cables. With the further improvement of the tensile strength of steel wires, the main span of cable-stayed bridges, the cable force, length, specifications and single cable weight of cable-stayed cables are constantly increasing, which makes the safety requirements of cable-stayed cables constantly increasing. According to the production process of cable-stayed cables, the finished cable-stayed cables with parallel steel wire bundles are parallel and close together according to the standard. After the steel wire bundles are initially formed, they are twisted 2° to 4° in the left direction by a twisting machine. Its unique spatial spiral characteristics make the stranded cable itself have a tensile back-twisting behavior, that is, the cable-stayed cable will twist during the traction and tensioning process.

[0003] During the traction and tensioning process of the inclined cable, when the cable force reaches a certain value, the torsion of the cable will drive the jack cylinder or the through-hole sleeve to rotate, causing torsional damage to the jack and the support leg. This brings many safety hazards to the installation and construction of the inclined cable, and may even affect the construction period, increase construction costs, and fail to meet construction requirements.

[0004] Therefore, a cable tensioning device is urgently needed to solve the above technical problems. Summary of the invention

[0005] The object of the present invention is to provide a cable tensioning device which can improve the safety of cable construction and meet the construction requirements.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A cable tensioning device, comprising:

[0008] a support assembly, to which the cable is movably connected;

[0009] A driving assembly, comprising a movable part and a fixed part, wherein the fixed part is arranged on the supporting assembly, and the movable part can be slidably arranged on the fixed part along the tensioning direction;

[0010] The bearing assembly includes a bearing member, which is rotatably connected to the movable member and is configured to be connected to the cable. When the movable member slides along the tensioning direction, the bearing member can rotate relative to the movable member to drive the cable to rotate around its own axis.

[0011] Optionally, the support assembly includes a limiting member, the limiting member is provided with a first limiting hole, and the pull cable is passed through the first limiting hole.

[0012] Optionally, the support assembly further includes a support member disposed on the limiting member, the limiting member and the support member are arranged to form a mounting groove, and one end of the cable is placed in the mounting groove.

[0013] Optionally, the support assembly further includes a first locking member disposed on the cable, wherein the first locking member abuts against an inner wall of the mounting groove.

[0014] Optionally, a second limiting hole is provided on the support member, and one end of the bearing member passes through the second limiting hole and is connected to the cable.

[0015] Optionally, the fixed member is provided with a piston cavity, and the movable member slides in the piston cavity with damping.

[0016] Optionally, the cable tensioning device further comprises a rotating assembly, through which the bearing member is rotatably connected to the movable member, and the rotating assembly is configured to generate a damping feeling between the bearing member and the movable member.

[0017] Optionally, the rotating assembly includes a rolling member, a retaining frame and two rotating members, the rolling members are provided in plurality, the plurality of rolling members are arranged at intervals along the circumference of the retaining frame and are rotatably connected to the retaining frame, the retaining frame is arranged between the two rotating members, the two rotating members are respectively connected to the supporting member and the movable member, and abut against the rolling members.

[0018] Optionally, the bearing assembly further includes a second locking member, and the second locking member is arranged between the bearing member and the movable member.

[0019] Optionally, an anti-slip portion is provided on the bearing member, and the second locking member abuts against the anti-slip portion.

[0020] Beneficial effects of the present invention:

[0021] The present invention provides a cable tensioning device, which includes a support assembly, a driving assembly and a bearing assembly. The cable is movably connected to the supporting assembly to ensure the safety of the cable during the construction process and to avoid interference of the supporting assembly on the cable. The driving assembly includes a movable part and a fixed part, and the fixed part is arranged on the supporting assembly to provide stable support for the movable part to ensure the tensioning effect of the cable. The movable part can be slidably arranged on the fixed part along the tensioning direction, and the bearing assembly includes a bearing part, which is rotatably connected to the movable part. When the movable part slides along the tensioning direction, it is connected to the cable through the bearing part, and can drive the cable to achieve stable tensioning. At the same time, the bearing part can rotate relative to the movable part, driving the cable to rotate around its own axis. Such an arrangement enables the cable to rotate moderately around its own axis during the construction process, releases the torsional force generated by the twisting angle, prevents the torsional force from being transmitted to the driving assembly and causing damage, and improves the service life and construction safety of the cable tensioning device. Through the above arrangement, the cable tensioning device of the present application can improve the safety of cable construction and meet the construction requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of a cable tensioning device provided in an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of a rotating assembly provided in an embodiment of the present invention.

[0024] In the figure:

[0025] 100. Cable; 1. Support assembly; 11. Limiting member; 111. First limiting hole; 12. Support assembly; 121. Second limiting hole; 13. Mounting slot; 14. First locking member; 2. Drive assembly; 21. Movable member; 22. Fixed member; 3. Bearing assembly; 31. Bearing member; 32. Second locking member; 4. Rotating assembly; 41. Rotating member. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] In the description of this embodiment, the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0030] like Figure 1 and Figure 2 As shown, this embodiment provides a cable tensioning device, which includes a support assembly 1, a drive assembly 2 and a bearing assembly 3. The cable 100 is movably connected to the support assembly 1, the drive assembly 2 includes a movable member 21 and a fixed member 22, the fixed member 22 is arranged on the support assembly 1, the movable member 21 can be slidably arranged on the fixed member 22 along the tensioning direction, and the bearing assembly 3 includes a bearing member 31, the bearing member 31 is rotatably connected to the movable member 21, and is configured to be connected to the cable 100. When the movable member 21 slides along the tensioning direction, the bearing member 31 can rotate relative to the movable member 21, driving the cable 100 to rotate around its own axis.

[0031] In this embodiment, the cable 100 is movably connected to the support assembly 1 to ensure the safety of the cable 100 during the construction process and to avoid interference of the support assembly 1 on the cable 100. The driving assembly 2 includes a movable part 21 and a fixed part 22. The fixed part 22 is arranged on the support assembly 1 to provide stable support for the movable part 21 and ensure the tensioning effect of the cable 100. The movable part 21 can be slidably arranged on the fixed part 22 along the tensioning direction. The bearing assembly 3 includes a bearing 31. The bearing 31 is rotatably connected to the movable part 21. When the movable part 21 slides along the tensioning direction, it is connected to the cable 100 through the bearing 31, and can drive the cable 100 to achieve stable tensioning. At the same time, the bearing 31 can rotate relative to the movable part 21, driving the cable 100 to rotate around its own axis. Such a setting enables the cable 100 to rotate around its own axis appropriately during the construction process, releases the torsional force generated by the twisting angle, and prevents the torsional force from being transmitted to the driving assembly 2 and causing damage, thereby improving the service life and construction safety of the cable tensioning device. Through the above arrangement, the cable tensioning device of this embodiment can improve the safety of the construction of the cable 100 and meet the construction requirements.

[0032] It should be noted that the tensioning direction of the present embodiment is the tensioning direction of the cable 100 , which is generally parallel to the extension direction of the cable 100 . The specific direction can be determined according to the construction operation of the cable, and no further explanation is given here.

[0033] The specific structure of the cable tensioning device is described below:

[0034] Specifically, Figure 1 and Figure 2 As shown, the support assembly 1 includes a limit member 11, which has a first limit hole 111. The cable 100 is passed through the first limit hole 111, which can effectively limit the position of the cable 100 and prevent the cable 100 from shifting or shaking during the construction process, thereby improving the stability and safety of the installation of the cable 100.

[0035] Specifically, the support assembly 1 also includes a support member 12 arranged on the limit member 11. The limit member 11 and the support member 12 are arranged to form an installation groove 13. One end of the cable 100 is placed in the installation groove 13. By setting the installation groove 13, not only can one end of the cable 100 be protected, but also the installation and disassembly of the cable 100 are facilitated, thereby improving the construction efficiency.

[0036] More specifically, in this embodiment, the stopper 11 is a steel pad, the support member 12 is a support leg, and the support leg is arranged on the steel pad to ensure the overall rigidity of the support assembly 1, thereby providing reverse support for the normal use of the drive assembly 2. In other embodiments, the stopper 11 is a steel pipe, the support member 12 is a steel block, the steel pipe is arranged on the steel block, and is used to pass the cable 100 to ensure that the cable 100 has sufficient reverse support force during the tensioning process. The specific structure of the above components is not limited too much here, as long as the above functions can be achieved.

[0037] Specifically, the support assembly 1 further includes a first locking member 14 disposed on the cable 100, the first locking member 14 abuts against the inner wall of the installation groove 13, and the cable 100 is firmly locked in the installation groove 13 by providing the first locking member 14, so as to prevent the cable 100 from loosening or falling off during the construction process, thereby improving the reliability and safety of the installation of the cable 100. Among them, the first locking member 14 is selected from a nut or a buckle, and the specific structure of the first locking member 14 is not limited too much here, as long as it can achieve the above-mentioned functions.

[0038] Specifically, the support member 12 is provided with a second limiting hole 121, and one end of the bearing member 31 passes through the second limiting hole 121 and is connected to the cable 100, thereby limiting the perforation position of the bearing member 31, ensuring the correct connection between the bearing member 31 and the cable 100, helping to maintain the tensioning direction and strength of the cable 100, and improving the construction accuracy. Among them, the bearing member 31 uses a tensioning rod or a tensioning plate, and the specific structure of the bearing member 31 is not limited too much here, as long as it is convenient for the connection and tensioning construction of the cable 100.

[0039] Specifically, the fixed part 22 is provided with a piston cavity, and the movable part 21 slides in the piston cavity with damping, so that the operator can effectively control the movement speed and strength of the movable part 21, thereby achieving a smooth tensioning process, which helps to reduce the impact and vibration of the cable 100 during the tensioning process and improve the construction quality and safety.

[0040] More specifically, in this embodiment, the fixed part 22 is a hydraulic cylinder body, the movable part 21 is a piston, and the piston chamber is configured to accommodate hydraulic oil. The flow of hydraulic oil drives the piston to achieve damped sliding relative to the hydraulic cylinder body, thereby achieving stable tensioning of the cable 100. The cable 100 can rotate appropriately around its own axis during the construction process to release the torsional force, thereby avoiding damage such as oil leakage caused by the rotation of the piston. It should be noted that the specific working principle of the drive component 2 can refer to the working principle of the hydraulic cylinder, which will not be repeated here. In other embodiments, the drive component 2 can adopt a cylinder or an electric cylinder, and the specific structure of the drive component 2 is not limited too much here, as long as the above-mentioned functions can be achieved.

[0041] Specifically, the cable tensioning device also includes a rotating component 4, and the supporting member 31 is rotatably connected to the movable member 21 through the rotating component 4. The rotating component 4 is configured to generate a damping feeling between the supporting member 31 and the movable member 21, so that the supporting member 31 can rotate smoothly relative to the movable member 21. At the same time, by setting the rotating component 4 to generate a damping feeling, it is helpful to control the speed and force of the rotation of the supporting member 31, so that the cable 100 can rotate appropriately around its own axis during the construction process, release the torsional force, and prevent the cable tensioning device from being damaged.

[0042] Specifically, in this embodiment, the rotating assembly 4 includes a rolling member, a cage and two rotating members 41. There are multiple rolling members, which are arranged at intervals along the circumference of the cage and are rotatably connected to the cage. The cage is arranged between the two rotating members 41. The two rotating members 41 are respectively connected to the bearing member 31 and the movable member 21 and abut against the rolling member. When the rotating member 41 is subjected to axial force during the tensioning process of the cable 100, the rotating member 41 rotates around its own axis relative to the cage under the torsional force of the cable 100, thereby making the rotation between the bearing member 31 and the movable member 21 more stable and flexible. By arranging the rolling member, the friction and wear between the rotating member 41 and the cage are reduced, the stability and reliability of the rotating member 41 during rotation are ensured, and the service life of the rotating assembly 4 is extended.

[0043] More specifically, in this embodiment, the rolling element is a tapered roller, and the two rotating elements 41 are respectively a shaft ring and a seat ring. The tapered roller is rotatably arranged on the retaining frame to form a rolling assembly, and the rolling assembly is arranged between the shaft ring and the seat ring, thereby realizing the relative rotation of the bearing member 31 and the movable member 21. It should be noted that the working principle of the rotating assembly 4 can be specifically referred to the working principle of the thrust bearing, which will not be repeated here. In other embodiments, the rolling element is a steel ball, and the two rotating elements 41 are respectively a shaft ring and a seat ring, that is, as long as the above-mentioned functions can be achieved, the specific structure of the above-mentioned components will not be limited too much.

[0044] Specifically, the bearing assembly 3 further includes a second locking member 32, which is disposed between the bearing member 31 and the movable member 21. It is understood that in this embodiment, the second locking member 32 is locked on the bearing member 31, and is rotatably connected to the movable member 21 through the rotating assembly 4, so that the rotating assembly 4 is always subjected to an axial force under the locking action of the second locking member 32, thereby ensuring its normal operation. Among them, the second locking member 32 is selected from a nut or a buckle, and the specific structure of the second locking member 32 is not limited too much, as long as it can achieve the above-mentioned functions.

[0045] Specifically, an anti-slip portion is provided on the carrier 31 , and the second locking member 32 abuts against the anti-slip portion, thereby increasing the friction between the carrier 31 and the second locking member 32 , and preventing the second locking member 32 from sliding on the carrier 31 .

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A cable tensioning device, characterized in that: include: A support assembly (1), a cable (100) movably connected to the support assembly (1); A driving assembly (2) comprising a movable member (21) and a fixed member (22), wherein the fixed member (22) is arranged on the supporting assembly (1), and the movable member (21) is slidably arranged on the fixed member (22) along a tensioning direction; The bearing assembly (3) comprises a bearing member (31), wherein the bearing member (31) is rotatably connected to the movable member (21) and is configured to be connected to the cable (100); when the movable member (21) slides along the tensioning direction, the bearing member (31) can rotate relative to the movable member (21), thereby driving the cable (100) to rotate around its own axis.

2. The cable tensioning device according to claim 1, characterized in that: The support assembly (1) comprises a limiting member (11), the limiting member (11) is provided with a first limiting hole (111), and the pull cable (100) is passed through the first limiting hole (111).

3. The cable tensioning device according to claim 2, characterized in that: The support assembly (1) further comprises a support member (12) arranged on the limiting member (11), the limiting member (11) and the support member (12) being arranged to form a mounting groove (13), and one end of the pull cable (100) is placed in the mounting groove (13).

4. The cable tensioning device according to claim 3, characterized in that: The support assembly (1) further comprises a first locking member (14) arranged on the cable (100), wherein the first locking member (14) abuts against an inner wall of the mounting groove (13).

5. The cable tensioning device according to claim 3, characterized in that: The support member (12) is provided with a second limiting hole (121), and one end of the bearing member (31) passes through the second limiting hole (121) and is connected to the pull cable (100).

6. The cable tensioning device according to claim 1, characterized in that: The fixed part (22) is provided with a piston cavity, and the movable part (21) slides in the piston cavity with damping.

7. The cable tensioning device according to claim 1, characterized in that: The cable tensioning device further comprises a rotating assembly (4), the bearing member (31) is rotatably connected to the movable member (21) via the rotating assembly (4), and the rotating assembly (4) is configured to generate a damping feeling between the bearing member (31) and the movable member (21).

8. The cable tensioning device according to claim 7, characterized in that: The rotating assembly (4) comprises a rolling member, a retaining frame and two rotating members (41). The rolling members are provided in plurality. The plurality of rolling members are arranged at intervals along the circumference of the retaining frame and are rotatably connected to the retaining frame. The retaining frame is arranged between the two rotating members (41). The two rotating members (41) are respectively connected to the bearing member (31) and the movable member (21) and abut against the rolling members.

9. The cable tensioning device according to any one of claims 1 to 8, characterized in that: The bearing assembly (3) further comprises a second locking member (32), wherein the second locking member (32) is arranged between the bearing member (31) and the movable member (21).

10. The cable tensioning device according to claim 9, characterized in that: The bearing member (31) is provided with an anti-slip portion, and the second locking member (32) abuts against the anti-slip portion.

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