An adaptive diverter, adaptive diverter structure and method of construction

Abstract

The application discloses a kind of self-adapting diverter, self-adapting steering structure and construction method, self-adapting diverter includes N steering block, N-1 positioning block, M flexible guide pipe, the steering block is equipped with the pipeline cooperation with flexible guide pipe, the positioning block is equipped with at least one with flexible guide pipe cooperation hole, the positioning block is placed between adjacent steering block by flexible guide pipe;Wherein N is the positive integer greater than 1, M is the positive integer greater than 0.The self-adapting diverter, self-adapting steering structure and construction method disclosed in the application are modularized design, and have strong versatility, can be realized factory production, and are assembled according to demand at construction site;By adding the positioning block for positioning steering block between adjacent steering block, adjacent steering block can be left with the space for bending, to realize the self-adaptability of entire steering structure.

Description

Technical Field

[0001] This invention relates to the field of cable steering systems, and more particularly to an adaptive steering system, an adaptive steering structure, and a construction method. Background Technology

[0002] Cable steering systems are commonly used in external cable systems, embedded in concrete, and are load-bearing components used to change the direction of the cable. Existing steering systems consist of guide plates, outer sleeves, partitions, isolation pipes, grouting material, etc., and the overall structure is fixed and immutable. Because they need to be embedded in concrete before cable threading, the parameters of the steering system must be determined according to the bending direction, radius, angle, and position of the external cable during manufacturing. The steering system and installation position also need to correspond precisely, making these steering systems non-interchangeable. Therefore, there are many types of steering systems, a large amount of parameter data, and the inability to inspect or replace them after embedding; standardized design and production are difficult, and processing and quality control are challenging; high precision is required for construction and installation, and the complex and cumbersome marking system can easily lead to pre-embedding deviations, or even reverse embedding, causing damage to the outer protective layer of the cable.

[0003] Currently, Chinese patent CN1458426A discloses a steering mechanism. This steering mechanism has 2 to 120 parallel guide tubes inside its steering tube, with each guide tube connected to the others by 2 to 5 connecting plates. The connecting plates at both ends are spot-welded to the guide tubes. The steering tube is arc-shaped, has a flared end, or is flared or tower-shaped at both ends, with a circular, square, or polygonal cross-section. The gap between the guide tubes and the steering tubes can be filled with cement grout, epoxy resin, or other fillers to ensure it is full and dense. This prior art steering mechanism has a fixed and unchangeable shape, requiring the parameters to be determined based on the bending direction, radius, angle, and position of the external cable. It also demands high precision in pre-embedding and installation, making it unsuitable for general use.

[0004] Chinese patent CN203684103U discloses a tie rod steering mechanism, including a baffle and N symmetrically distributed and parallel guide tubes for threading the cable. The two ends of each guide tube pass through corresponding holes on the baffle and are connected to it. M wire-splitting plates supporting the guide tubes are evenly distributed on the guide tubes between the baffles. Each wire-splitting plate consists of a flat plate and a surrounding plate. The flat plate has N guide tube holes for the guide tubes to pass through. The N guide tubes pass through the guide tube holes of the M flat plates and are slidably connected to the wire-splitting plates. The surrounding plate is perpendicularly connected to the flat plate, thus forming a cross-section... A short cylindrical body with a surface shape consistent with that of a flat plate, the flat plate being located at the center of the short cylindrical body's axial direction; although the prior art mentions the ability to arbitrarily control the bending angle of the steering gear according to the cable's direction, the steering gear of the prior art also needs to be directly embedded in concrete during use, and the bending direction, radius, angle, and position of the cable need to be determined before cable threading to determine the bending shape of the steering gear, which cannot achieve true adaptive steering. In addition, the wire splitting plate in this structure has poor stability, and in the application conditions of high-stress cables, it is easy to cause damage to the outer protective layer of the cable.

[0005] Chinese patent CN1664275A discloses an external prestressed cable turning structure, which mainly involves casting turning holes without inner steel pipes into concrete components to adapt to changes in the spatial position of the cable, generally in the shape of an hourglass. This prior art, using hourglass-shaped concrete turning holes, is prone to concrete cracking during cable tensioning. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides an adaptive steering system, an adaptive steering structure, and a construction method. The aim is to solve the problems of existing steering systems requiring the determination of various parameters based on the bending direction, radius, angle, and position of the external cable; high precision requirements for steering system production and installation; non-universal steering systems; poor stability of the steering system; and susceptibility to damage to the external protective layer of the cable.

[0007] The present invention achieves the above objectives by adopting the following technical solutions:

[0008] An adaptive steering system includes N steering blocks, N-1 positioning blocks, and M flexible guide tubes. Each steering block has a pipe that mates with the flexible guide tube, and each positioning block has at least one channel that mates with the flexible guide tube. The positioning blocks are positioned between adjacent steering blocks via the flexible guide tubes. N is a positive integer greater than 1, and M is a positive integer greater than 0.

[0009] In this technical solution, the flexible guide tube has a certain degree of flexibility and can be bent. It is used to thread the cable body through the pipes of the steering block and the holes of the positioning block, and connects the steering block and the positioning block in series. The steering blocks are arranged at intervals with the positioning blocks, so that there is space between the steering blocks for bending. The number of flexible guide tubes is the same as the number of cables, and the number of pipes of the steering blocks is the same as the number of flexible guide tubes. The positioning blocks are arranged on the threading path of the flexible guide tubes. The positioning block has at least one hole that matches the flexible guide tube. The number of holes of the positioning block can be set according to the actual size of the positioning block or the number of cables, etc., and is not limited here.

[0010] This technical solution adopts a modular structure design. The steering body is manufactured and installed in the factory and then installed on the construction site. The steering blocks and positioning blocks can be added or removed according to the bending angle of the cable. It also uses a flexible guide tube that can bend with the cable. The overall structure is flexible. Compared with the fixed structure steering gear in the existing technology, it does not require a specially made steering gear according to the preset bending parameters of the cable. The production precision requirements are lower, the versatility is better, and standardized design can be achieved, which can reduce the design workload, improve production efficiency and product quality.

[0011] A further technical solution is that the steering block is a one-piece structure. In this technical solution, the one-piece steering block can be manufactured from materials such as steel and high-strength concrete in one piece.

[0012] A further technical solution is that the cross-section of the steering block is one of a circle, an ellipse, or a polygon. The shape of the steering block can be set according to installation requirements. For example, if it is installed in the steering steel pipe in the following technical solution, the shape of the steering block needs to be determined according to the cross-sectional shape of the steering steel pipe.

[0013] A further technical solution involves having both ends of the positioning block abut against adjacent steering blocks. This technical solution can further improve the stability of the steering system.

[0014] A further technical solution is that the width at both ends of the positioning block is no more than 200mm. In this technical solution, the dimension of the positioning block at both ends near the adjacent steering block, which is no more than 200mm, can satisfy the bending space of the cable body under normal working conditions and also position the adjacent steering block.

[0015] A further technical solution involves using a flexible guide tube with flared ends. This solution, by employing a flared flexible guide tube, provides a certain degree of restraint to the steering blocks at both ends, thereby further improving the stability of the steering system.

[0016] An adaptive steering structure includes the aforementioned steering gear and a steering steel tube that cooperates with the steering gear. The steering steel tube has a shape in which the outer diameter of at least one end gradually increases. After the cable tensioning is completed, the outer wall of the steering block is in close contact with the inner wall of the steering steel tube.

[0017] In this technical solution, the steering block can automatically form the required bending angle, turning radius, and direction in the steering steel pipe according to the steering linearity of the cable located in the steering gear. Specifically, when the cable is threaded, it passes through the guide tubes of the steering block. When the cable is tensioned, each guide tube is subjected to radial force, causing the steering block to bend to one side and closely adhere to the inner wall of the steering steel pipe with gradually increasing inner diameter, thereby forming the bending direction, radius, and angle required by the cable, realizing the self-adaptability of the steering gear. In addition, the steering gear has lower precision requirements in the production and installation process, which can ensure the accuracy of the external cable curve. It does not require the steering gear to be pre-embedded in concrete, which can avoid pre-embedding errors during construction and improve construction efficiency and quality.

[0018] A further technical solution is that the shape of the cross-section of the steering steel pipe is adapted to the cross-sectional shape of the steering block.

[0019] A construction method for an adaptive steering structure, comprising the aforementioned adaptive steering structure, wherein the construction steps are as follows:

[0020] A. The pre-fabricated steering steel pipe is pre-embedded and installed into the concrete as required;

[0021] After the concrete reaches the installation conditions that the steering block meets, the prepared adaptive steering gear is installed into the steering steel tube.

[0022] During cable threading, the cable body is passed through the flexible guide tube in sequence. After the cable threading is completed, tensioning is performed. Due to the radial force, the steering block is in close contact with the inner wall of the steering steel pipe, automatically forming the bending direction, radius and angle required by the cable body.

[0023] The beneficial effects of this invention are:

[0024] 1. It adopts a flexible guide tube that can bend with the cable, eliminating the need for a specially made steering gear based on the cable's preset bending parameters. This reduces the production precision requirements, makes it versatile, and enables standardized design, thereby reducing design workload and improving production efficiency and product quality.

[0025] 2. The modular design allows for the addition or removal of steering blocks and positioning blocks as needed, offering strong versatility. Components such as steering blocks, positioning blocks, and flexible guide tubes can be manufactured in the factory and assembled on-site. This design allows for bending space between adjacent steering blocks, enabling the steering structure to adapt to different conditions during tensioning. The positioning blocks also improve the stability of the steering gear during transportation and construction, preventing relative slippage and enhancing the overall stability of the steering gear and structure.

[0026] 3. The cooperation between the steering gear and the steering steel tube allows the steering block to automatically form the required bending angle, turning radius and direction in the steering steel tube according to the steering linearity of the cable body located in the steering gear, automatically adapting to the steering requirements of the cable body; the steering gear has lower precision requirements in the production and installation process, which can ensure the accuracy of the external cable curve, and does not need to be pre-embedded in concrete, which can avoid pre-embedding errors in construction and improve construction efficiency and quality. Attached Figure Description

[0027] Figure 1 See: A schematic diagram of the adaptive steering system described in this invention.

[0028] Figure 2 The diagram shows a circular cross-section steering block structure as described in this invention.

[0029] Figure 3 The diagram shows a square-section steering block structure as described in this invention.

[0030] Figure 4 Here is a cross-sectional view of the steering block of the overall structure described in this invention.

[0031] Figure 5 See: A schematic diagram of the positioning block described in this invention.

[0032] Figure 6 See: A schematic diagram of the adaptive steering structure described in this invention.

[0033] Figure 7 This is a schematic diagram of the tensioning process of the adaptive steering structure cable described in this invention.

[0034] Figure 8 See: A schematic diagram of the first embodiment of the steering steel pipe of the present invention.

[0035] Figure 9 See: A schematic diagram of the second embodiment of the steering steel pipe of the present invention.

[0036] Figure 10 See: A schematic diagram of the third embodiment of the steering steel pipe of the present invention.

[0037] Figure 11 See: A schematic diagram of the fourth embodiment of the steering steel pipe of the present invention.

[0038] In the picture:

[0039] 1. Steering block; 10. Pipe; 2. Positioning block; 20. Channel; 3. Flexible guide tube; 4. Steering steel pipe; 41. First end of steering steel pipe; 42. Second end of steering steel pipe; 5. Cable body; 6. Concrete. Detailed Implementation

[0040] The following is in conjunction with the appendix Figures 1 to 11 The present invention will be described in detail below. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0041] like Figures 1 to 5 As shown, this embodiment provides an adaptive steering system, including a steering block 1, a positioning block 2, and a flexible guide tube 3. The steering block 1 is provided with a pipe 10 that cooperates with the flexible guide tube 3, and the positioning block 2 is placed between adjacent steering blocks 1.

[0042] Specifically, in this embodiment, there are 8 steering blocks 1, 7 positioning blocks 2, 12 cable strands, and the number of flexible guide tubes 3 is the same as the number of cable 5. The number of pipes 10 in the steering blocks 1 is the same as the number of flexible guide tubes 3. The positioning blocks 2 are located on the path of the middle flexible guide tube 3, and the positioning blocks 2 are provided with a channel 20 for passing through the flexible guide tube 3. The flexible guide tube 3 passes through 8 steering blocks 1 and 7 positioning blocks through the pipes 10 in the steering blocks 1 and the channel 20 in the positioning blocks 2, and the steering blocks 1 and positioning blocks 2 are connected in series at intervals. In other embodiments, the specific number of steering blocks 1 can be determined according to the steering radius, steering angle and other parameters of the cable, as well as the size of the steering blocks 1 and positioning blocks 2. The number of pipes 10 in the steering blocks 1 and the number of flexible guide tubes 3 can be customized according to the specific number of cable 5. The number of the above components and structures is not limited here.

[0043] The steering block 1 in this embodiment is an integral structure with a circular cross-section, made of steel. The steering mechanism adopts a modular design, allowing for the addition or removal of steering blocks 1 as needed. The steering blocks 1 are spaced apart by positioning blocks 2, leaving space between them for bending. The positioning blocks 2 are made of plastic. This embodiment uses a flexible guide tube 3 that can bend with the cable body 5. The flexible guide tube 3 is made of rubber material, has a certain degree of flexibility and can be bent, and is used to thread the cable body 5. During the tensioning process of the cable body 5, the steering mechanism can adapt to the turning angle, radius and direction of the cable body 5. It does not require a specially made steering mechanism based on the preset bending parameters of the external cable system, has lower production precision requirements, better versatility, and can achieve standardized design, which can reduce design workload, improve production efficiency and product quality. Furthermore, by adding positioning blocks 2 between adjacent steering blocks 1 for positioning between the steering blocks 1, space for bending can be left between adjacent steering blocks. Compared with the existing technology of welding the guide tube to the connecting plate (or wire dividing plate), the integrity of the steering tube can be guaranteed, further protecting the cable body.

[0044] The adaptive steering device of the above embodiment can be installed in the steering steel pipe 4 in the following embodiment, or it can be directly embedded in the concrete 6 according to the steering parameters of the cable 5 to realize the steering of the cable 5.

[0045] The above embodiments exemplarily illustrate the material and specific structure of the steering block 1, the material of the flexible guide tube 3, and the material and shape of the positioning block 2. In other embodiments or practical applications, the following alternatives can be used, for example:

[0046] 1. The steering block 1 can also be made of high-strength concrete material in one piece;

[0047] 2. The specific cross-section of the steering block 1 can also be an elliptical or polygonal structure;

[0048] 3. The flexible guide tube 3 can also be made of thin-walled steel, soft plastic and flexible composite materials;

[0049] 4. In some preferred embodiments, the flexible guide tube 3 can also adopt a structure with flared ends, which can play a certain limiting role on the steering blocks 1 at both ends, and further improve the stability of the steering gear.

[0050] 5. Positioning block 2 can also be made of materials such as rubber or metal.

[0051] The above embodiment exemplifies the number of holes 20 in the positioning block 2 and its installation method. The number of holes 20 can also be determined according to the specific size of the positioning block 2 and its installation position.

[0052] In another embodiment, based on the above embodiment, the two ends of the positioning block 2 are planar structures and respectively abut against the adjacent steering block 1. The distance between the two ends of the positioning block 2 and the adjacent steering block 1 is 200mm. The size of no more than 200mm can meet the bending space of the cable body 5 under normal working conditions and can also position the adjacent steering block 1.

[0053] Another implementation, such as Figures 6 to 11 As shown, based on the above embodiments, an adaptive steering structure including the adaptive steering gear described in the above embodiments is provided, and further including a steering steel tube 4 that cooperates with the steering gear. Specifically, the shape of the steering steel tube 4 is as follows: Figures 7 to 8 As shown, the outer diameter of the first end 41 of the steering steel pipe gradually increases, forming an overall trumpet shape, to meet the parameters such as the steering direction, steering angle, and steering radius of the cable body 5; after the cable body 5 is tensioned, the outer wall of the steering block 1 is tightly fitted to the inner wall of the steering steel pipe 4. The specific construction process is as follows:

[0054] A. Steering steel tube 4 and adaptive steering gear are manufactured in the factory. Steering steel tube 4 is pre-embedded into concrete 6 during the prefabrication of box girder.

[0055] When B is pre-embedded, the first end 41 (i.e. the flared end) of the steering steel pipe is placed on the steering side, and the other end is placed in accordance with the coordinate requirements and ensures that the axis is parallel to the center line of the box girder at steering block 1.

[0056] After C steering block 1 meets the installation conditions, clean the inner wall of steering steel tube 4, and then install the adaptive steering unit into steering steel tube 4 after aligning the holes.

[0057] When threading the cable, the cable body 5 is passed through the flexible guide tube 3 in sequence. After threading, tensioning is performed. Due to the radial force, the steering block 1 will be in close contact with the trumpet-shaped inner wall of the steering steel pipe 4, automatically forming the bending direction, radius and angle required by the cable body 5.

[0058] If cable replacement is required later, the cable force can be unloaded, and the cable body 5 can be pulled out from the anchor head and steering gear individually, and a new cable body can be re-inserted for tensioning and anchor head anti-corrosion treatment. Alternatively, the entire cable force can be unloaded, the cable body 5 can be completely removed, the steering gear can be replaced, and then a new cable can be inserted for tensioning. Compared with the steering structure in the existing technology that directly embeds the steering gear into the concrete 6, the replacement of cable body 5 and steering gear can be realized.

[0059] In other embodiments, depending on the specific working conditions, the turning direction, angle, radius, etc. of the cable body 5, the steering steel pipe 4 can be configured such that the second end 42 of the steering steel pipe is also trumpet-shaped to meet the turning requirements of the cable body 5, such as... Figures 9 to 11As shown; in some embodiments where the cross-section of the steering block 1 is elliptical or polygonal, the cross-sectional shape of the steering steel pipe 4 can also be a shape adapted to the cross-section of the steering block 1.

[0060] This invention provides an adaptive steering system and structure. By employing a flexible guide tube that bends with the cable, the steering system does not require custom-made components based on pre-set bending parameters of the cable. This reduces production precision requirements, enhances versatility, and enables standardized design, thereby reducing design complexity, improving production efficiency, and enhancing product quality. The modular design allows for the addition or removal of steering blocks 1 and positioning blocks 2 as needed, further increasing versatility. The coordination between the steering system and the steering steel tube 4 allows the steering blocks 1 to automatically form the required bending angle, turning radius, and direction within the steering steel tube 4 based on the steering linearity of the cable 5 within the steering system, automatically adapting to the steering requirements of the cable 5. The steering system requires less precision during production and installation, ensuring the accuracy of the external cable curve. It eliminates the need to embed the steering system in concrete, avoiding pre-embedding errors and improving construction efficiency and quality.

Claims

1. An adaptive steering system, characterized in that, It includes N steering blocks (1), N-1 positioning blocks (2), and M flexible guide tubes (3). The steering blocks (1) are provided with pipes (10) that cooperate with the flexible guide tubes (3). The positioning blocks (2) are provided with at least one channel (20) that cooperates with the flexible guide tubes (3). The positioning blocks (2) are placed between adjacent steering blocks (1) through the flexible guide tubes (3). The positioning blocks (2) are located on the path of the middle flexible guide tube (3). N is a positive integer greater than 1 and M is a positive integer greater than 0. The steering blocks (1) are integral structures. The two ends of the positioning blocks (2) abut against the adjacent steering blocks (1) respectively. The steering blocks (1) are arranged at intervals using the positioning blocks (2) so that there is space between the steering blocks (1) for bending.

2. An adaptive steering system according to claim 1, characterized in that, The cross-section of the steering block (1) is one of a circle, an ellipse or a polygon.

3. An adaptive steering system according to claim 1, characterized in that, The width of both ends of the positioning block (2) is no more than 200mm.

4. An adaptive steering system according to claim 1, characterized in that, The flexible guide tube (3) has flared ends.

5. An adaptive steering structure, characterized in that, Includes a steering gear as described in any one of claims 1 to 4, and a steering steel pipe (4) that cooperates with the steering gear, wherein the shape of the steering steel pipe (4) is such that the outer diameter of at least one end gradually increases; after the cable tensioning is completed, the outer wall of the steering block is in close contact with the inner wall of the steering steel pipe.

6. The adaptive steering structure according to claim 5, characterized in that, The shape of the cross-section of the steering steel pipe (4) is adapted to the cross-section shape of the steering block (1).

7. A construction method for an adaptive steering structure, characterized in that... The construction steps for the adaptive steering structure as described in claim 5 are as follows: A. The pre-fabricated steering steel pipe (4) is pre-embedded and installed into the concrete (6) as required; After the concrete (6) reaches the installation conditions that meet the requirements of the steering block (1), the prepared adaptive steering gear is installed into the steering steel tube (4); When threading the cable, the cable body is passed through the flexible guide tube (3) in sequence. After threading the cable, tensioning is performed, which causes the steering block (1) to bend to one side. Due to the radial force, the steering block (1) is in close contact with the inner wall of the steering steel pipe (4) and the inner wall of the steering steel pipe (4) with the gradually increasing inner diameter, automatically forming the bending direction, radius and angle required by the cable body.

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