Welding technology and supporting device of cable sheath

Abstract

The present invention specifically relates to a welding process and a supporting device for a cable-stayed cable sheath, and the welding process for the cable-stayed cable sheath comprises the following steps: calculating the number of the supporting devices according to the length of the cable-stayed cable sheath to be welded; welding the supporting devices on site according to the width of the cable-stayed cable sheath to be welded and the height of the hot-melt welding platform; arranging the supporting devices on both sides of the hot-melt welding platform; adjusting the supporting devices and the hot-melt welding platform to form a welding track for the cable-stayed cable sheath to move; inserting a cable-stayed cable sheath of standard length and welding. The welding process for the cable-stayed cable sheath described in the present invention can produce an auxiliary device suitable for the welding of the cable-stayed cable sheath required at the construction site of the cable-stayed bridge, which is conducive to improving the welding effect of the cable-stayed cable sheath required. At the same time, it can also ensure that the spiral line of the cable-stayed cable sheath is connected smoothly, so that the interface is smooth and avoids staggering, and the welding quality of the cable-stayed cable sheath is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of inclined cables, and in particular relates to a welding process and a supporting device for an inclined cable sheath. Background Art

[0002] As an important component of the cable-stayed bridge, the cable sheath has the functions of protecting the cable and reducing wind vibration. In the CCCC Ethiopia Bahir Dar Cable-stayed Bridge Project, one of the cable-stayed bridges is a control project. Its structural form is a (100+180+100)m support tower beam consolidation low tower cable-stayed bridge. There are 72 cable-stayed cables, C1~C3 is 43 bundles, C4~C9 is 55 bundles, using a double-layer double helix sheath with a diameter of 240mm*8mm and a standard length of 11m. Hot melt welding is required according to the length of each cable.

[0003] The length of the HDPE outer sheath of C1~C9 inclined cables is 19.85~73.02m. It is necessary to use standard length HDPE sheath pipes for multiple hot-melt welding to achieve the designed sheath length of each inclined cable. Due to the use of double helix wire, it is necessary to ensure that the helix wire is connected smoothly during welding, the interface is smooth to avoid staggering, reduce welding slippage and appearance scratches, and ensure welding and appearance quality.

[0004] At present, the existing technical solution adopts a welding platform. The top surface of the entire platform is a plane, generally made of steel. Every time the casing needs to be welded, the casing to be welded is placed on the platform, and then the casing to be connected is welded. When welding the next section, the completed casing is dragged to one side of the platform.

[0005] However, the welding platform as a whole occupies a large area, and the top of the platform has no protective effect on the outer spiral line of the sheath. Moreover, the sheath on the welding platform is directly dragged, which can easily cause the sheath of the inclined cable to be damaged during the dragging process, affecting the line shape of the outer spiral line. Summary of the invention

[0006] The purpose of the present invention is to at least solve the problem in the prior art that the sheath of the inclined cable is easily damaged during the welding process. This purpose is achieved through the following technical solutions:

[0007] The first aspect of the present invention provides a welding process for a stay cable sheath, comprising the following steps:

[0008] Calculate the number of the supporting devices according to the required length of the welded stay cable sheath;

[0009] The supporting device is welded on site according to the required width of the welded cable sheath and the height of the hot-melt welding platform;

[0010] The supporting device is arranged on both sides of the hot melt welding platform;

[0011] Adjusting the supporting device and the hot-melt welding platform to form a welding track for the inclined cable sheath to move;

[0012] Insert the standard length of the cable sheath and weld it.

[0013] The welding process of the cable-stayed sheath of the present invention can calculate and determine the number and shape of the supporting devices according to the required length and width of the cable-stayed sheath and the height of the hot-melt welding platform at the construction site of the cable-stayed bridge, and directly weld the supporting devices, so as to better manufacture the auxiliary devices suitable for the welding of the required cable-stayed sheath, which is conducive to improving the welding effect of the required cable-stayed sheath. At the same time, by arranging the supporting devices on both sides of the hot-melt welding platform and adjusting the supporting devices and the hot-melt welding platform to form a welding track for the cable-stayed sheath to move, it is helpful to ensure that the spiral line of the cable-stayed sheath is connected smoothly, so that the interface is smooth and avoids staggering, and the welding quality of the cable-stayed sheath is guaranteed.

[0014] In addition, the welding process of the stay cable sheath according to the present invention may also have the following additional technical features:

[0015] In some embodiments of the present invention, the calculation of the number of the supporting devices according to the required length of the welded stay cable sheath comprises:

[0016] According to the required length of the cable sheath, the number of the supporting devices is calculated according to a first preset spacing, wherein the value range of the first preset spacing is [3m, 8m].

[0017] In some embodiments of the present invention, the supporting devices are arranged on both sides of the hot melt welding platform, including:

[0018] A first number of the supporting devices are arranged on the input side of the hot melt welding platform, wherein the first number is greater than or equal to 1;

[0019] A second number of the supporting devices are arranged on the output side of the hot melt welding platform, wherein the second number is greater than or equal to 1.

[0020] In some embodiments of the present invention, the first number is greater than or equal to 2, wherein the minimum spacing between the supporting device and the hot melt welding platform is a second preset spacing, the value range of the second preset spacing is [1m, 4m], and the spacing between two adjacent supporting devices is the first preset spacing.

[0021] In some embodiments of the present invention, the step of adjusting the supporting device and the hot-melt welding platform to form a welding track for the inclined cable sheath to move comprises:

[0022] Adjusting the position of the supporting device so that the supporting device and the welding platform are located on a first axis, wherein the first axis is the axis of the stay cable sheath;

[0023] The height of the supporting device is adjusted so that the supporting surface of the supporting device and the active surface of the welding platform are located in the same horizontal plane.

[0024] In some embodiments of the present invention, the step of inserting a standard length of a stay cable sheath and welding as required comprises:

[0025] Operate the hot melt welding platform;

[0026] Accepts standard lengths of stay cable sheaths;

[0027] Polishing welding locations of standard length stay cable sheaths;

[0028] Align the polished standard length of the stay cable sheath;

[0029] Standard length of cable sheath after welding and alignment.

[0030] Another aspect of the present invention further provides a supporting device for implementing the welding process of the stay cable sheath of the present invention, the supporting device comprising:

[0031] chassis;

[0032] A roller, the roller is rotatably arranged on the base frame, and the outer peripheral surface of the roller is used to support and transport the inclined cable sheath;

[0033] Limiting posts are provided on opposite sides of the roller along the axial direction of the roller.

[0034] In some embodiments of the present invention, a protective layer is provided on the outer circumference of the roller.

[0035] In some embodiments of the present invention, it also includes:

[0036] A position limiting protection member is rotatably arranged on the position limiting column.

[0037] In some embodiments of the present invention, the position limiting protection member is configured as a tubular structure and is sleeved on the position limiting column. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0039] Figure 1 It is a schematic diagram of the overall process of the welding process of the inclined cable sheath according to the embodiment of the present invention;

[0040] Figure 2 It is a partial flow diagram of the welding process of the stay cable sheath according to the embodiment of the present invention;

[0041] Figure 3 A top view of the supporting device according to an embodiment of the present invention;

[0042] Figure 4 It is a front view of the supporting device according to the embodiment of the present invention;

[0043] Figure 5 A side view of the supporting device according to an embodiment of the present invention;

[0044] The symbols in the accompanying drawings are as follows:

[0045] 1. Base frame; 11. Base; 12. Steel plate; 13. Diagonal brace;

[0046] 2. Roller;

[0047] 3. Limit column. DETAILED DESCRIPTION

[0048] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0049] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0050] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0051] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0052] like Figure 1 As shown, according to an embodiment of the present invention, this embodiment proposes a welding process for a stay cable sheath, and the welding process for the stay cable sheath includes the following steps:

[0053] Calculate the number of supporting devices according to the required length of the welded cable sheath;

[0054] The supporting device is welded on site according to the required width of the welded cable sheath and the height of the hot-melt welding platform;

[0055] Support devices are arranged on both sides of the hot-melt welding platform;

[0056] Adjust the supporting device and the hot-melt welding platform to form a welding track for the inclined cable sheath to move;

[0057] Insert the standard length of the cable sheath and weld it.

[0058] The welding process of the cable-stayed sheath of the present invention can calculate and determine the number and shape of the supporting devices according to the required length and width of the cable-stayed sheath and the height of the hot-melt welding platform at the construction site of the cable-stayed bridge, and directly weld the supporting devices, so as to better manufacture the auxiliary devices suitable for the welding of the required cable-stayed sheath, which is conducive to improving the welding effect of the required cable-stayed sheath. At the same time, by arranging the supporting devices on both sides of the hot-melt welding platform and adjusting the supporting devices and the hot-melt welding platform to form a welding track for the cable-stayed sheath to move, it is helpful to ensure that the spiral line of the cable-stayed sheath is connected smoothly, so that the interface is smooth and avoids staggering, and the welding quality of the cable-stayed sheath is guaranteed.

[0059] In some embodiments of the present invention, according to the required length of the welded stay cable sheath, calculating the number of the supporting devices comprises:

[0060] According to the required welding and the required length of the cable sheath, the number of the supporting devices is calculated according to the first preset spacing, wherein the value range of the first preset spacing is [3m, 8m].

[0061] Due to the different construction lengths of cable-stayed bridges, the number and type of cables required are also different, so the length and type of the sheaths used are also different. However, since the existing sheath pipes are all produced in standard lengths and cannot be used directly, they need to be welded according to the required length of the cable. When the required length of the cable sheath is longer, it is necessary to set up multiple supporting devices to support the cable sheath to assist in the welding of the cable sheath. When the sheath is a double-layer double helix structure, the setting of multiple supporting devices can further ensure the smooth connection of the double helix. In addition, the supporting device can also be used for the separate placement of the cable sheath.

[0062] In this embodiment, the distance between two adjacent supporting devices is adjustable. However, when the number of supporting devices is calculated on site, the distance between two adjacent supporting devices is fixed and calculated according to the first preset distance. The value range of the first preset distance is [3m, 8m]. Preferably, the distance between two adjacent supporting devices is 5m. Of course, the distance between two adjacent supporting devices can also be 4m, 6m or other lengths to ensure that several inclined cable sheaths are located in the same horizontal plane.

[0063] In some embodiments of the present invention, arranging supporting devices on both sides of the hot melt welding platform includes:

[0064] A first number of supporting devices are arranged on the input side of the hot melt welding platform, wherein the first number is greater than or equal to 1;

[0065] A second number of supporting devices are arranged on the output side of the hot melt welding platform, wherein the second number is greater than or equal to one.

[0066] In actual use, it is necessary to arrange supporting devices on the input and output sides of the hot melt welding platform, and arrange the same or different numbers according to actual usage, so that construction personnel can make reasonable arrangements according to the site environment and needs, so as to better complete the welding of the inclined cable sheath pipe and ensure the welding quality of the inclined cable sheath pipe. At the same time, it also helps to improve the applicability and flexibility of the welding process of the inclined cable sheath.

[0067] Specifically, when the required length of the cable sheath pipe is longer, at this time, the first number is greater than or equal to 2, and the minimum spacing between the supporting device and the hot melt welding platform is the second preset spacing, wherein the value range of the second preset spacing is [1m, 4m], and the spacing between two adjacent supporting devices is the first preset spacing. In this embodiment, with the hot melt welding platform as the center, multiple supporting devices are arranged on the input side of the hot melt welding platform, and the spacing between the supporting device close to the hot melt welding platform and the hot melt welding platform is the second preset spacing. In this embodiment, the second preset spacing is set to 2m, and at the same time, the remaining adjacent supporting devices are arranged according to the first preset spacing, that is, the spacing between two adjacent supporting devices is 5m. This arrangement can make the welding track formed by the multiple supporting devices and the hot melt welding platform have a better supporting effect on the cable sheath, and ensure the accuracy of the standard length of the cable sheath during welding.

[0068] Here, it should be noted that the number and arrangement of the supporting devices at the output side of the hot melt welding platform can refer to the arrangement of the supporting devices described above, that is, the second number can be the same as the first number. Of course, the specific arrangement number and arrangement of the supporting devices can also be in other forms, so as to achieve the support and transportation of the cable sheath during welding.

[0069] In some embodiments of the present invention, adjusting the supporting device and the hot-melt welding platform to form a welding track for the inclined cable sheath to move includes:

[0070] Adjust the position of the supporting device so that the supporting device and the welding platform are located on a first axis, which is the axis of the inclined cable sheath;

[0071] Adjust the height of the supporting device so that the supporting surface of the supporting device and the active surface of the welding platform are located at the same horizontal plane.

[0072] Although the production of the supporting device needs to refer to the width of the welded inclined cable sheath and the height of the hot-melt welding platform, in order to further reduce the impact of welding on the spiral line in the inclined cable sheath, it is also necessary to set the supporting device and the welding platform according to the first axis. At the same time, adjust the height of the supporting surface of the supporting device and the active surface of the welding platform to ensure that the inclined cable sheaths to be processed are all located on the same horizontal straight line, thereby further reducing the impact of welding on the spiral line in the inclined cable sheath and reducing the difficulty of welding the inclined cable sheath.

[0073] In some embodiments of the present invention, inserting a standard length of the stay cable sheath and welding as required comprises:

[0074] Operate the hot melt welding platform;

[0075] Accepts standard lengths of stay cable sheaths;

[0076] Polishing welding locations of standard length stay cable sheaths;

[0077] Align the polished standard length of the stay cable sheath;

[0078] Standard length of cable sheath after welding and alignment.

[0079] In actual use, Figure 2 As shown, the hot melt welding platform needs to be operated first to ensure that the hot melt welding platform can perform welding operations on the inclined cable sheath, and then receive the standard length inclined cable sheath on the input side of the hot melt welding platform, and fix the connection between the two standard length inclined cable sheaths on the hot melt welding platform. Next, the welding positions of the two standard length inclined cable sheaths are polished, and the processed standard length inclined cable sheaths are aligned, and finally the welding is completed.

[0080] This embodiment also relates to a supporting device, and the supporting device is used to implement the above-mentioned welding process of the inclined cable sheath, such as Figure 3-5 As shown, the supporting device comprises a base frame 1, a roller 2 and a limiting column 3. The roller 2 is rotatably arranged on the base frame 1, and the outer peripheral surface of the roller 2 is used to support and transport the inclined cable sheath. The limiting columns 3 are arranged on opposite sides of the roller 2 along the axial direction of the roller 2.

[0081] Specifically, the chassis 1 includes a variety of workpieces, and the various workpieces can be spliced ​​into the required chassis 1. In this embodiment, the chassis 1 is welded by steel bars and steel plates 12. Of course, the chassis 1 can also be directly welded by steel bars. Figure 1-3As shown, the base 11 is welded by 6 threaded steel bars with a diameter of 16 mm, and two spaced steel plates 12 are welded on the base 11. The width of the steel plate 12 is 16 cm, the height of the steel plate 12 is 56 cm, and the thickness of the steel plate 12 is 1.5 cm. In addition, the above-mentioned base frame 1 is also provided with a diagonal brace. In this embodiment, the diagonal brace 13 is 4 threaded steel bars with a diameter of 16 mm, and is welded between the base 11 and the steel plate 12 to ensure the stability of the track.

[0082] In this embodiment, the roller 2 has an inner shaft and an outer shaft, wherein the inner shaft diameter of the roller 2 is 4 cm, the outer shaft diameter is 10 cm, the inner shaft is welded to the steel plate 12 to form a whole, and the outer shaft can roll so that the roller 2 can support and transport the inclined cable sheath. Such a configuration is conducive to the sliding of the inclined cable sheath during welding. As a preferred embodiment, a protective layer is also provided on the outer peripheral surface of the roller 2. The provision of the protective layer helps to avoid hard contact between the roller 2 and the outer peripheral surface of the inclined cable sheath. In this embodiment, the protective layer is a transparent tape wrapped around the outer side of the roller 2 for 3 turns. Using transparent tape as a protective layer can reduce welding costs, can be purchased and used directly, and is convenient and quick to arrange. At the same time, it also has a good protective effect.

[0083] like Figure 2 and Figure 4 As shown, there are two limit columns 3, which are arranged on the top of the steel plate 12. In this embodiment, the limit column 3 can be set as a steel bar welded on the steel plate 12. The distance between the two steel bars is set according to the outer diameter of the inclined cable sheath, so as to limit the swing of the inclined cable sheath.

[0084] In some embodiments of the present invention, the supporting device further includes a limit protection member, which is rotatably disposed on the limit column 3. The limit protection member can abut against the outer peripheral surface of the inclined cable sheath to avoid damage to the inclined cable sheath, and can also further limit the swing of the inclined cable sheath. At the same time, the limit protection member can cooperate with the roller 22 to guide and assist the sliding of the inclined cable sheath, thereby reducing damage to the inclined cable sheath. As a preferred embodiment, the limit protection member is configured as a tubular structure, and is sleeved on the limit column 3. In this embodiment, the limit protection member adopts a polyvinyl chloride tube with a diameter of 18 mm, that is, a PVC tube. Such a configuration can not only effectively protect the appearance of the inclined cable sheath, but also facilitate the manufacture of the supporting device.

[0085] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A welding process for a stay cable sheath, characterized in that: The steps include: Calculate the number of supporting devices according to the required length of the welded cable sheath; The supporting device is welded on site according to the required width of the welded cable sheath and the height of the hot-melt welding platform; The supporting device is arranged on both sides of the hot melt welding platform; Adjusting the supporting device and the hot-melt welding platform to form a welding track for the inclined cable sheath to move; Insert the standard length of the cable sheath and weld it; The calculating of the number of the supporting devices according to the required length of the welded stay cable sheath comprises: According to the required length of the cable sheath, the number of the supporting devices is calculated according to the first preset spacing, wherein the value range of the first preset spacing is [3m, 8m]; Arranging the supporting device on both sides of the hot melt welding platform includes: A first number of the supporting devices are arranged on the input side of the hot melt welding platform, wherein the first number is greater than or equal to 1; A second number of the supporting devices are arranged on the output side of the hot melt welding platform, wherein the second number is greater than or equal to 1; The first number is greater than or equal to 2, wherein the minimum distance between the supporting device and the hot melt welding platform is a second preset distance, and the value range of the second preset distance is [1m, 4m]; The distance between two adjacent supporting devices is the first preset distance; The step of adjusting the supporting device and the hot-melt welding platform to form a welding track for the inclined cable sheath to move comprises: Adjusting the position of the supporting device so that the supporting device and the welding platform are located on a first axis, wherein the first axis is the axis of the stay cable sheath; Adjusting the height of the supporting device so that the supporting surface of the supporting device and the active surface of the welding platform are located at the same horizontal plane; The supporting device comprises: chassis; A roller, the roller is rotatably arranged on the base frame, and the outer peripheral surface of the roller is used to support and transport the inclined cable sheath; Limiting posts are provided on opposite sides of the roller along the axial direction of the roller.

2. The welding process of the stay cable sheath according to claim 1 is characterized in that: The method of inserting a standard length of the stay cable sheath and welding as required includes: Operate the hot melt welding platform; Accepts standard lengths of stay cable sheaths; Polishing welding locations of standard length stay cable sheaths; Align the polished standard length of the stay cable sheath; Standard length of cable sheath after welding and alignment.

3. The welding process of the stay cable sheath according to claim 1 is characterized in that: A protective layer is sleeved on the outer peripheral surface of the roller.

4. The welding process of the stay cable sheath according to claim 1 is characterized in that: Also includes: A position limiting protection member is rotatably arranged on the position limiting column.

5. The welding process of the stay cable sheath according to claim 4 is characterized in that: The position limiting protection member is configured as a tubular structure and is sleeved on the position limiting column.

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