Cable-stayed bridge cable guide pipe positioning device

Abstract

The utility model relates to the technical field of cable guide pipe construction, and discloses a cable-stayed bridge cable guide pipe positioning device which comprises a positioning support. The two clamping mechanisms are arranged in the length direction of the cable guide pipe in a spaced mode, each clamping mechanism comprises a supporting transverse rod, an angle adjusting assembly and a clamping assembly, the supporting transverse rods are fixedly and slidably connected with the positioning support in the vertical direction and are perpendicular to the cable guide pipe, and the angle adjusting assemblies are fixedly and slidably connected in the length direction of the supporting transverse rods and are perpendicular to the cable guide pipe. The clamping assembly is installed on the angle adjusting assembly and used for clamping the cable guide pipe in a releasable mode. The clamping assembly is installed on the angle adjusting assembly, the inclination angle of the clamping assembly can be adjusted according to the inclination angle of the cable guide pipe, the adjusting process of the horizontal position and the height of the clamping assembly can be achieved, and the cable guide pipe positioning device can be suitable for the positioning process of cable guide pipes with different inclination angles and different heights. Therefore, the application range of the positioning device is enlarged.

Description

Technical Field

[0001] This utility model relates to the field of cable duct construction technology, and in particular to a positioning device for cable ducts of cable-stayed bridges. Background Technology

[0002] As an important form of modern bridge engineering, cable-stayed bridges rely heavily on their cable guide duct positioning devices for precise installation. These ducts, serving as pre-embedded conduits for the stay cables, must be accurately installed and fixed before the bridge beams are poured to ensure the cables are precisely positioned within the concrete structure. This device not only safeguards the mechanical properties of the stay cables but also directly impacts the structural stability and durability of the bridge.

[0003] Patent document CN221320696U discloses a cable guide positioning device. Its technical solution relies on a swing cylinder to adjust the swing angle of a movable plate, using an arc-shaped measuring plate and a pointer indicator to monitor the cable guide's tilt angle in real time, and utilizing a square sliding cavity and mounting rod to achieve lateral fine-tuning of the positioning clamp. However, the existing technology still has significant limitations. Once the position of the positioning bracket is fixed, the height of the positioning clamp cannot be adjusted as a whole; only its tilt angle can be adjusted. When the cable guide cannot be clamped and positioned, the position of the positioning bracket needs to be readjusted. Alternatively, due to the influence of the construction location, the height of the positioning clamp cannot be adjusted, making it impossible to achieve the desired clamping effect on the cable guide. These defects result in a limited applicability of this type of positioning device during positioning.

[0004] Given the lack of height adjustment function in existing cable guide positioning devices, it is urgent to develop a new device with vertical adjustability. Utility Model Content

[0005] The present invention aims to provide a cable guide positioning device for cable-stayed bridges, overcoming the shortcomings mentioned above.

[0006] To achieve the above objectives, the technical solution of this utility model is: a cable-stayed bridge cable guide positioning device, comprising:

[0007] Positioning bracket; and

[0008] Two sets of clamping mechanisms are spaced apart along the length of the cable guide tube. Each clamping mechanism includes a support crossbar, an angle adjustment component, and a clamping component. The support crossbar is fixedly and slidably connected to the positioning bracket in the vertical direction and is perpendicular to the cable guide tube. The angle adjustment component is fixedly and slidably connected along the length of the support crossbar. The clamping component is mounted on the angle adjustment component and is used to clamp the cable guide tube in a releasable manner.

[0009] Furthermore, the angle adjustment component includes:

[0010] A support seat that is fixedly and slidably connected to the support crossbar along its length;

[0011] An adjusting block rotatably connected to the support base, the clamping assembly being mounted on the side wall of the adjusting block; and

[0012] A locking element for selectively braking the relative position between the support and the adjusting block.

[0013] Furthermore, the locking element is a locking block, which is slidably connected to the support base along the rotational radial direction of the adjusting block, and the locking block selectively engages with the adjusting block.

[0014] Furthermore, the locking block has a first inclined surface at the end away from the adjusting block;

[0015] The angle adjustment assembly further includes a drive block, which is slidably connected to the support base in a direction parallel to the rotation tangent of the adjustment block. A second inclined surface is provided on the side of the drive block near the adjustment block. The second inclined surface is slidably connected to a first inclined surface. The sliding of the second inclined surface and the first inclined surface relative to each other can drive the locking block to move closer to or away from the adjustment block, so as to realize relative braking or release between the support base and the clamping base respectively.

[0016] Furthermore, the locking block is arranged in a horizontal direction, the first inclined surface is inclined from top to bottom toward the direction of the adjusting block, and the driving block is arranged in a vertical direction;

[0017] The angle adjustment assembly also includes a bolt located below the drive block. The bolt is arranged vertically and abuts against the drive block. The drive block can move downward under its own weight or move upward under the force of the bolt.

[0018] Furthermore, one of the first inclined surface and the second inclined surface is provided with a first slide rail, and the other of the first inclined surface and the second inclined surface is provided with a first sliding protrusion, the first sliding protrusion being slidably connected to the first slide rail.

[0019] Furthermore, one of the support base and the adjusting block is provided with a second slide rail, and one of the support base and the adjusting block is provided with a second sliding protrusion. Both the second sliding protrusion and the second slide rail are arc-shaped and are slidably connected.

[0020] Furthermore, the clamping assembly includes:

[0021] A U-shaped clamping seat fixedly connected to the adjusting block; and

[0022] The U-shaped hoop, with its opening facing the clamping seat, has two ends passing through the clamping seat and threaded with nuts. The clamping seat and the U-shaped hoop cooperate to clamp the cable guide.

[0023] Furthermore, a first strip-shaped hole is provided on the support crossbar along its length direction, and a connecting ear is fixedly installed on the support base. The connecting ear is fixedly and slidably connected to the first strip-shaped hole through a first fastener.

[0024] Furthermore, the positioning bracket includes a longitudinal rod, which is arranged in a vertical direction and has a second strip-shaped hole along its length. The two ends of the supporting crossbar are fixedly and slidably connected to the second strip-shaped hole by a second fastener.

[0025] Compared with the prior art, this utility model has at least the following advantages:

[0026] The clamping component of this utility model is installed on the angle adjustment component, which can adjust the tilt angle of the clamping component according to the tilt angle of the cable guide. Since the angle adjustment component is fixedly and slidably connected to the support crossbar, and the support crossbar is fixedly and slidably connected to the positioning bracket, the horizontal position and height of the clamping component can be adjusted. It can be applied to the positioning process of cable guides with different tilt angles and different heights, thereby increasing the applicability of the positioning device of this utility model. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of the cable guide tube positioning device for cable-stayed bridges according to this utility model;

[0029] Figure 2 This is a schematic diagram of the clamping mechanism of this utility model;

[0030] Figure 3 This is a cross-sectional view of the clamping mechanism of this utility model;

[0031] Figure 4 This is an exploded view of the clamping mechanism of this utility model.

[0032] Reference numerals: 1. Positioning bracket; 2. Support crossbar; 3. Support base; 4. Adjusting block; 5. Cable guide; 6. Locking block; 7. Drive block; 8. Bolt; 9. Clamping seat; 10. U-shaped hoop; 11. First strip hole; 12. Connecting ear; 13. First fastener; 14. Longitudinal rod; 15. Second strip hole; 16. Second fastener. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Reference Figure 1 This utility model provides a positioning device for cable-stayed bridge cable guide ducts, mainly comprising a positioning bracket 1 and two sets of clamping mechanisms spaced apart along the length of the cable guide 5. The positioning bracket 1 is a rectangular frame structure made of high-strength steel. The clamping mechanism includes a support crossbar 2, an angle adjustment component, and a clamping component. The support crossbar 2 is made of angle steel and is fixedly and slidably connected to the positioning bracket 1 in the vertical direction. After it is perpendicular to the cable guide 5, the angle adjustment component is fixedly and slidably connected along the length of the support crossbar 2. The clamping component is installed on the angle adjustment component and is used to selectively clamp the cable guide 5. The angle adjustment component can adjust the rotation angle of the clamping component to achieve clamping of cable guide ducts 5 at different inclination angles.

[0036] To facilitate the positioning and installation of the support base 3 on the support crossbar 2, the support base 3 is fixedly installed with two connecting ears 12. The support crossbar 2 has a first strip hole 11 along its length. The connecting ears 12 are fixedly connected to the first strip hole 11 by a first fastener 13. The first fastener 13 is preferably a bolt and nut structure.

[0037] Similarly, to facilitate the height adjustment process of the supporting crossbar 2, the positioning bracket 1 of this utility model is provided with a longitudinal rod 14, which is arranged vertically. The longitudinal rod 14 has a second strip-shaped hole 15 along its length. Both ends of the supporting crossbar 2 are fixedly connected to the second strip-shaped hole 15 by second fasteners 16. The second fastener 16 is preferably a bolt and nut structure.

[0038] In this utility model, the support base 3 is provided with a second slide rail, and the adjusting block 4 is provided with a second sliding protrusion. Both the second sliding protrusion and the second slide rail are arc-shaped and are slidably connected.

[0039] Reference Figure 2-4 The angle adjustment assembly is made of cast steel and includes a support base 3, an adjusting block 4, and a braking component. The support base 3 is fixedly and slidably connected along the length of the support crossbar 2. An angle scale line is provided on the side wall of the support base 3. The adjusting block 4 is rotatably connected to the support base 3 and has a zero-degree scale line opposite to the angle scale line. The zero-degree scale line is an indicator line; when the adjusting block 4 rotates on the support base 3, the zero-degree scale line indicates the rotation angle of the adjusting block 4, such as 15°, 25°, 35°, etc. A clamping component is fixedly installed on the side wall of the adjusting block 4. The rotation axis of the adjusting block 4 coincides with the symmetrical axis of the clamping component, allowing the clamping component to adjust synchronously when the adjusting block 4 adjusts its angle. A locking block 6 is used to selectively brake the support base 3 and the adjusting block 4.

[0040] Specifically, when the locking block 6 and the adjusting block 4 are not in contact, the adjusting block 4 can rotate on the support base 3; conversely, when the locking block 6 and the adjusting block 4 are in an interference fit, the adjusting block 4 can achieve the effect of relative braking between the locking block 6 and the adjusting block 4.

[0041] In a specific embodiment of this utility model, in order to facilitate the adjustment of the relative locking position between the locking block 6 and the adjusting block 4, so as to achieve the effect of relative braking or release between the locking block 6 and the adjusting block 4 respectively, the locking component of this utility model is the locking block 6, which is slidably connected to the support base 3 along the rotational radial direction of the adjusting block 4, and the locking block 6 selectively engages with the adjusting block 4.

[0042] Specifically, the locking block 6 has a first inclined surface at the end away from the adjusting block 4. The angle adjustment assembly also includes a driving block 7, which interacts with the locking block 6 to allow the locking block 6 to move closer to or further away from the adjusting block 4. The driving block 7 is slidably connected within the support base 3 in a direction parallel to the rotation tangent of the adjusting block 4, and a second inclined surface is provided on the side of the driving block 7 closer to the adjusting block 4, the second inclined surface being slidably connected to the first inclined surface. Optionally, a first sliding protrusion is provided on the second inclined surface, and a first slide rail is provided on the first inclined surface, the first sliding protrusion being slidably connected to the first slide rail.

[0043] Optionally, the locking block 6 is slidably connected to the support base 3 in the horizontal direction, and the driving block 7 is slidably connected to the support base 3 in the vertical direction. The first inclined surface is inclined from top to bottom towards the adjusting block 4. The angle adjusting assembly also includes a bolt 8, which is located below the driving block 7 and is arranged in the vertical direction. The bolt 8 abuts against the driving block 7.

[0044] When the rotating bolt 8 moves downward, the driving block 7 can move downward under its own weight. Due to the interaction between the first inclined surface and the second inclined surface, it can drive the locking block 6 to move away from the adjusting block 4 until the locking block 6 and the adjusting block 4 are in clearance fit. At this time, the adjusting block 4 can rotate freely on the support 3. Conversely, when the rotating bolt 8 moves upward, the driving block 7 can move upward under the force of the bolt 8, and the locking block 6 moves towards the adjusting block 4 until the locking block 6 and the adjusting block 4 are in interference fit. At this time, the locking block 6 and the adjusting block 4 are relatively braked.

[0045] Optionally, the clamping assembly includes a clamping seat 9 and a U-shaped hoop 10. The clamping seat 9 is fixedly connected to the adjusting block 4. The clamping seat 9 has a U-shaped structure. The opening of the U-shaped hoop 10 faces the clamping seat 9. Both ends of the U-shaped hoop 10 pass through the clamping seat 9 and are threaded with nuts. The clamping seat 9 and the U-shaped hoop 10 cooperate to achieve the clamping effect on the cable guide 5.

[0046] Working principle of this utility model:

[0047] Before the bridge beam is cast, a positioning bracket 1 is installed on the bridge formwork. Then, a hoisting device is used to hoist the cable guide 5 between two sets of clamping mechanisms, ensuring the cable guide 5 passes through the bridge formwork. The angle of the support seat 3 is adjusted by rotating the adjusting block 4 to be parallel to the inclination angle of the cable guide 5. Based on the position of the cable guide 5, the positions of the connecting lug 12 and the first strip hole 11, and the support crossbar 2 and longitudinal bar are adjusted to match the position of the cable guide 5. Then, the clamping seat 9 and U-shaped hoop 10 are used to clamp the cable guide 5, facilitating its hoisting and subsequent bridge beam casting. After the cable guide 5 is cast and fixed, the nut is tightened to release the clamping seat 9 and U-shaped hoop 10. The positioning bracket 1 is then disassembled and installed on the next bridge formwork for positioning the next cable guide 5. This cyclical use improves the adaptability of the positioning device and reduces construction costs.

[0048] The positioning device for cable-stayed bridge cable guide 5, through the ingenious combination of positioning bracket 1, support crossbar 2 and clamping mechanism, not only meets the installation requirements of cable guide 5 at multiple angles, heights and positions, but also significantly improves construction efficiency and safety.

[0049] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0050] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A stay cable duct positioning device for a cable-stayed bridge, characterized by, include: Positioning bracket (1); as well as Two sets of clamping mechanisms are spaced apart along the length of the cable guide (5). The clamping mechanism includes a support crossbar (2), an angle adjustment component and a clamping component. The support crossbar (2) is fixedly and slidably connected to the positioning bracket (1) in the vertical direction and is perpendicular to the cable guide (5). The angle adjustment component is fixedly and slidably connected along the length of the support crossbar (2). The clamping component is mounted on the angle adjustment component and is used to clamp the cable guide (5) in a releasable manner.

2. The cable-stayed bridge cable duct positioning device according to claim 1, characterized in that, The angle adjustment component includes: A support seat (3) is fixedly and slidably connected to the support crossbar (2) along its length direction; An adjusting block (4) is rotatably connected to the support base (3), and the clamping assembly is mounted on the side wall of the adjusting block (4); and A locking element for selectively braking the relative position between the support (3) and the adjusting block (4).

3. The cable-stayed bridge cable duct positioning device according to claim 2, characterized in that, The locking element is a locking block (6), which is slidably connected to the support base (3) in the radial direction of rotation of the adjusting block (4), and the locking block (6) selectively engages with the adjusting block (4).

4. The cable-stayed bridge cable duct positioning device according to claim 3, characterized in that, The locking block (6) has a first inclined surface at one end away from the adjusting block (4); The angle adjustment assembly also includes a drive block (7), which is slidably connected in the support base (3) in a direction parallel to the rotation tangent of the adjustment block (4). The drive block (7) has a second inclined surface on the side near the adjustment block (4), and the second inclined surface is slidably connected to the first inclined surface. The second inclined surface and the first inclined surface slide against each other, which can drive the locking block (6) to move closer to or away from the adjustment block (4) so ​​as to realize relative braking or release between the support base (3) and the clamping base (9).

5. The cable-stayed bridge cable duct positioning device according to claim 4, characterized in that, The locking block (6) is arranged in the horizontal direction, the first inclined surface is inclined from top to bottom toward the direction close to the adjusting block (4), and the driving block (7) is arranged in the vertical direction; The angle adjustment assembly also includes a bolt (8) located below the drive block (7). The bolt (8) is arranged in a vertical direction and abuts against the drive block (7). The drive block (7) can move downward under its own weight or move upward under the force of the bolt (8).

6. The cable-stayed bridge cable duct positioning device according to claim 5, characterized in that, One of the first inclined surface and the second inclined surface is provided with a first slide rail, and the other of the first inclined surface and the second inclined surface is provided with a first sliding protrusion, which is slidably connected to the first slide rail.

7. A stay bridge cable duct positioning device according to any one of claims 2 to 6, wherein, One of the support base (3) and the adjusting block (4) is provided with a second slide rail, and one of the support base (3) and the adjusting block (4) is provided with a second sliding protrusion. The second sliding protrusion and the second slide rail are both arc-shaped and are slidably connected.

8. The cable-stayed bridge cable duct positioning device according to claim 7, characterized in that, The clamping assembly includes: A U-shaped clamping seat (9) fixedly connected to the adjusting block (4); and The U-shaped hoop (10) with its opening facing the clamping seat (9) has two ends passing through the clamping seat (9) and threaded with nuts. The clamping seat (9) and the U-shaped hoop (10) cooperate to clamp the cable guide (5).

9. The cable-stayed bridge cable duct positioning device of claim 8, wherein, The support crossbar (2) has a first strip hole (11) along its length direction, and the support base (3) has a connecting ear (12) fixedly installed on it. The connecting ear (12) is fixedly and slidably connected to the first strip hole (11) by a first fastener (13).

10. The stay cable duct positioning device of claim 9, wherein, The positioning bracket (1) includes a longitudinal rod (14), which is arranged in a vertical direction and has a second strip hole (15) along its length. The two ends of the supporting crossbar (2) are fixedly and slidably connected to the second strip hole (15) by a second fastener (16).

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