A pipe-type wire stranding machine and a headstock for umbilical steel pipe pre-twisting

Abstract

The utility model relates to umbilical cable manufacturing technology, especially relate to a wire distribution disc frame and tubular stranding machine for umbilical cable steel pipe pre-twisting. Wire distribution disc frame includes center annular plate, side annular plate and guide wheel group. Two side annular plates are a group and symmetrically set up in center annular plate both sides. Center annular plate and side annular plate all hollow out in the middle and form the wire channel along the first direction in common. Guide wheel group includes a plurality of respectively connecting in center annular plate and side annular plate and along the first direction arrangement's pressure wheel subassembly, and pressure wheel subassembly includes gyro wheel and is used for supporting the support spare of connecting gyro wheel, and gyro wheel sets up in wire channel and with the first direction tangent. The wave shape pipe body passageway is formed among a plurality of gyro wheels in the same group guide wheel group. The high rigid pipe unit of pre-twisting waits and passes through pipe body passageway and carries out pre-twisting, and then is twisted with other pipe unit, helps guaranteeing the stability of umbilical cable structure. Make pre-twist and twist synchronization, help to simplify the step and reduce space cost.

Description

Technical Field

[0001] This utility model relates to umbilical cable manufacturing technology, and in particular to a wire distribution frame and a tubular stranding machine for pre-twisting umbilical cable steel pipes. Background Technology

[0002] Umbilical cables are core equipment for deepwater oil and gas exploration and development. By integrating functional modules such as power, communication, and hydraulic pipelines, they enable energy transmission, signal control, and chemical delivery between surface facilities and subsea production systems. The fabrication of umbilical cables requires stranding multiple tubular units into a bundle. However, the tubular units that make up the umbilical cable typically include large-diameter, high-rigidity steel pipes. These steel pipes are difficult to deform and exhibit significant springback; if stranded synchronously with other tubular units, they are difficult to stably form.

[0003] To ensure the stability of the umbilical cable structure, it is usually necessary to pre-twist the tube units with greater elasticity or stiffness, deform them, and then twist them together with other tube units into a whole. This leaves room for the tube units with greater elasticity or stiffness to rebound and reduces the difficulty of their twisting deformation.

[0004] When preparing umbilical cables, pre-twisted steel pipes and other pipe units need to be installed together on a stranding machine for stranding, which makes the preparation process and equipment more complicated and not conducive to actual production applications. Utility Model Content

[0005] The purpose of this utility model is to provide a simple and easy-to-operate wire distribution plate and tubular stranding machine for pre-twisting umbilical cable steel pipes.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A branch tray frame for pre-twisting umbilical cable steel pipes, comprising: The central ring plate is constructed as a plate with a hollow center; Side annular plates, two in a group and symmetrically arranged on both sides of the central annular plate, the side annular plates are constructed as plates with a hollow center, and the hollow center and the hollow center of the central annular plate together form a wiring channel extending along the first direction. The guide wheel assembly includes multiple pressure roller assemblies arranged along the first direction. Each pressure roller assembly is connected to the central annular plate and the side annular plate, and corresponds one-to-one with the central annular plate and each of the side annular plates. Each pressure roller assembly includes a support member extending along the second direction and a roller connected to the support member. One end of the support member is connected to the central annular plate or the side annular plate. The roller is disposed in the wiring channel and is tangent to the first direction. In the same group of guide wheel assemblies, multiple rollers are connected at intervals to two different positions on the support member to form a wavy tube passage. The high-rigidity tube unit to be pre-twisted moves along the first direction and passes through the tube passage.

[0007] Optionally, the branch tray frame for pre-twisting umbilical cable steel pipes further includes a support frame, the support frame including a head end plate and a tail end plate arranged opposite each other, and at least one connecting column connected between the head end plate and the tail end plate. Both the head end plate and the tail end plate are constructed with a hollow structure in the middle to allow the cable routing channel to pass through the support frame. The connecting column extends along the first direction and is arranged around the cable routing channel. The central annular plate is fixedly connected to the connecting column, and the side annular plates are slidably connected to the connecting column, controllably moving closer to or further away from the side annular plates.

[0008] Optionally, the branching reel frame for pre-twisting umbilical cable steel pipes further includes a pitch adjustment assembly. The pitch adjustment assembly includes left and right rotating screws, a left-handed nut, a right-handed nut, and a power component. The middle part of the left and right rotating screws corresponds to the central annular plate. The power component drives the left and right rotating screws to rotate controllably along their central axis. The left-handed nut and the right-handed nut are sleeved on the left and right rotating screws and both cooperate with the left and right rotating screws. As the left and right rotating screws rotate, they controllably and synchronously move closer to or further away from the central annular plate. The left-handed nut and the right-handed nut are respectively fixedly connected to the two side annular plates in the same group.

[0009] Optionally, the support frame is formed with an adjustable scale extending along the first direction to indicate the distance between any of the side annular plates and the central annular plate in the first direction.

[0010] Optionally, a wheel track extending along the second direction is formed on the support member, and the roller is controllably slidably connected to the wheel track.

[0011] Optionally, the support includes a positioning block disposed near one end of the wheel track, a positioning screw extending along the second direction is threaded through the positioning block, and its end is rotatably connected to the roller, the roller being controllably moved closer to or further away from the positioning block as the positioning screw rotates.

[0012] Optionally, a positioning scale is formed on the support near the wheel track to indicate the distance between the roller and the positioning block.

[0013] Optionally, the roller includes a rotating shaft and a rotating roller detachably connected to the rotating shaft. The rotating roller rotates freely about the rotating shaft extending in a third direction, and an annular groove surrounding the rotating shaft is formed on the surface of the rotating roller. The annular groove engages with the high-rigidity tube unit, and the high-rigidity tube unit abuts against the inner wall of the annular groove.

[0014] This utility model also provides a tubular stranding machine, including the above-mentioned wire distribution reel frame for pre-twisting umbilical cable steel pipes, and further including wire distribution reels, a drive mechanism, and a threading drum. Multiple wire distribution reels are respectively embedded in and connected to the central annular plate and the hollowed-out portion of the side annular plate, and have multiple wire distribution through holes formed on their surfaces for forming multiple unit passages within the cable routing channel, each corresponding to a tube unit and extending along the first direction. Each tube unit includes a high-rigidity tube unit, and the tube passage is located inside the unit passage corresponding to the high-rigidity tube unit. Multiple tube units moving along the first direction pass through the corresponding unit passages and are then inserted into the threading drum. The drive mechanism drives the wire distribution reel frame to rotate controllably along its central axis.

[0015] Optionally, the wire distributors are all circular and their edges are fitted with the central annular plate or the side annular plate, and the cylindrical wire threading tube is coaxially arranged with the wire distributor.

[0016] According to the first aspect of this utility model, a wavy tube passage is formed by multiple rollers for the high-rigidity tube unit to pass through, thereby shaping the high-rigidity tube unit into a wavy shape. This helps to reserve space for springback before the high-rigidity tube unit is twisted with other tube units and reduces the bending difficulty of the high-rigidity tube unit, thus improving the stability of the umbilical cable shape. By symmetrically arranging side annular plates on two sides of the central annular plate, arranging the pressure roller assembly along the first direction, and placing each roller at different positions in the second direction, the tube passage forms a periodic wavy structure, which facilitates the periodic wavy shape of the pre-twisted high-rigidity tube unit, thus matching the periodic spiral structure after twisting. The guide wheel assembly is integrated into the distribution plate frame, and the twisting step is performed immediately after pre-twisting. Pre-twisting and twisting are completed simultaneously with a single device, which helps to simplify the equipment structure and operation steps, thereby saving space costs, equipment costs, and time costs.

[0017] Furthermore, by making the distance between the side annular plate and the central annular plate adjustable and maintaining symmetry within the group, it helps to adjust the tube passage to meet the stranding requirements of different umbilical cables, thereby ensuring the stability after stranding and giving the equipment better versatility.

[0018] Furthermore, by setting an adjustment scale, it is helpful to adjust the position of each side ring plate.

[0019] Furthermore, by making the position of the rollers adjustable, it is helpful to adjust the position of each roller according to the twisting requirements, thereby improving the versatility of the equipment.

[0020] Furthermore, the high-rigidity tube unit is constrained by the annular groove, ensuring that it moves along the tube body path, thereby forming a wave-like shape under the pressure of the rollers. By making the rotating roller detachably connected to the rotating shaft, it is easy to replace the rollers to fit high-rigidity tube units of different specifications, and it is also easy to replace damaged rollers.

[0021] According to a second aspect of this invention, multiple tube units are rotated along the central axis of the cable distribution frame under the drive of a driving mechanism, and are twisted together with the cable threading drum. Since some high-rigidity tube units are pre-twisted before twisting, this helps to improve the stability of the umbilical cable structure.

[0022] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the distribution plate frame shown in Embodiment 1 of this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0024] Legend: 101-High rigidity tube unit, 1-Bearing frame, 11-Head end plate, 12-Tail end plate, 13-Connecting column, 14-Mounting column, 2-Central annular plate, 3-Side annular plate, 4-Guide wheel assembly, 5-Pressure roller assembly, 51-Support component, 511-Wheel track, 52-Roller, 521-Rotating shaft, 522-Rotating roller, 523-Annular groove, 53-Positioning block, 54-Positioning screw, 6-Adjustable distance assembly, 61-Left and right turn screws, 62-Left turn nut, 63-Right turn nut, 64-Power component. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0029] This utility model application protects a cable distribution tray frame for pre-twisting umbilical cable steel pipes, comprising a central annular plate 2, side annular plates 3, and a guide wheel assembly 4. The central annular plate 2 is a plate-shaped structure with a hollow center. Two side annular plates 3 are arranged symmetrically on both sides of the central annular plate 2, and the hollow centers of the side annular plates 3, together with the hollow centers of the central annular plate 2, form a cable routing channel extending along a first direction. The guide wheel assembly 4 includes multiple pressure roller assemblies 5 arranged along the first direction. Each pressure roller assembly 5 is connected to the central annular plate 2 and the side annular plate 3 respectively, and corresponds one-to-one with the central annular plate 2 and each side annular plate 3. The pressure roller assembly 5 includes a support member 51 extending along the second direction and a roller 52 connected to the support member 51. One end of the support member 51 is connected to the central annular plate 2 or the side annular plate 3. The roller 52 is set in the wiring channel and is tangent to the first direction. In the same group of guide wheel assemblies 4, multiple rollers 52 are connected at intervals to two different positions on the support member 51 to form a wave-shaped tube passage. The high-rigidity tube unit 101 to be pre-twisted moves along the first direction and passes through the tube passage.

[0030] Multiple rollers 52 form a wavy tube passage for the high-rigidity tube unit 101 to pass through, thereby shaping the high-rigidity tube unit 101 into a wavy shape. This helps to reserve springback space before the high-rigidity tube unit 101 is twisted with other tube units and reduces the bending difficulty of the high-rigidity tube unit 101, thus improving the stability of the umbilical cable shape. By symmetrically arranging the side annular plates 3 on the central annular plate 2, arranging the pressure roller assembly 5 along the first direction, and placing each roller 52 at different positions in the second direction, the tube passage has a periodic wavy structure, which facilitates the periodic wavy shape of the pre-twisted high-rigidity tube unit 101, thus matching the periodic spiral structure after twisting. The guide wheel assembly 4 is integrated into the wire distribution plate frame, and immediately enters the twisting step after pre-twisting. Pre-twisting and twisting are completed simultaneously with a single device, which helps to simplify the equipment structure and operation steps, thereby saving space costs, equipment costs, and time costs.

[0031] Please refer to the following examples for details.

[0032] Example 1: A preferred embodiment of this application shows a tubular stranding machine comprising a wire distributor frame, wire distributors, a drive mechanism, and a threading drum. Multiple identical circular plate-shaped wire distributors are vertically arranged and aligned along a first horizontal direction, with each wire distributor fixed to the wire distributor frame. Each wire distributor has multiple circular through holes of different sizes, i.e., wire distribution through holes, the diameter of which corresponds to a specific tube unit, supporting and constraining the position of each tube unit. The wire distribution through holes on the multiple wire distributors corresponding to the same tube unit collectively form a unit passage extending along the first direction. The corresponding wire distribution through hole passes through the unit passage and is constrained by it. The threading drum is a cylindrical structure open at both ends and coaxially arranged with the wire distributors. After passing through the corresponding unit passage, each tube unit is bundled in the threading drum and passes through it. The drive mechanism drives the wire distributor frame to rotate around the central axis of the wire distributor, thereby stranding the tube units into a bundle within the threading drum.

[0033] The tubular stranding machine in this embodiment also includes an intermediate disc. The intermediate disc is parallel to and coaxially arranged with the distribution disc. Its diameter is smaller than that of the distribution disc but larger than that of the threading drum. It is positioned between the distribution disc and the threading drum and rotates synchronously with the distribution disc. The intermediate disc has multiple distribution through holes of different specifications, and the position of each distribution through hole corresponds to that of the distribution disc. These holes constrain the extension direction of each tube unit between the distribution disc and the threading drum after it leaves the unit passage, helping to ensure the relative position of each tube unit and improving the structural stability of the stranded umbilical cable.

[0034] Please see Figure 1The cable tray frame includes a support frame 1, an annular plate, and a guide wheel assembly 4. The annular plate includes two types: a central annular plate 2 and a side annular plate 3, both of which are supported by the support frame 1. The guide wheel assembly 4 includes multiple pressure roller assemblies 5 arranged along the first direction. Each pressure roller assembly 5 is connected to the annular plate, and each pressure roller assembly 5 of each guide wheel assembly 4 corresponds one-to-one with each annular plate.

[0035] The support frame 1 includes a head end plate 11 and a tail end plate 12, as well as connecting columns 13 and mounting columns 14 connecting the head end plate 11 and the tail end plate 12. The head end plate 11 has an overall annular structure, with an inner circle and an outer circle extending outwards at both ends in the radial direction, forming two outwardly chamfered structures with edges extending tangentially. The tail end plate 12 has the same structure as the head end plate 11 and is arranged opposite to it. The connecting column 13 is a long cylindrical shape, extending in a first direction and connecting at both ends to the outwardly chamfered structures of the head end plate 11 and the tail end plate 12, respectively. The two connecting columns 13 are arranged radially along the inner circle of the head end plate 11 and are arranged opposite to each other. The mounting column 14 is a long quadrangular prism shape, extending in the first direction and connecting at both ends to the head end plate 11 and the tail end plate 12, respectively. The two mounting columns 14 are arranged radially along the inner circle of the head end plate 11, and the arrangement direction of the mounting columns 14 is perpendicular to the arrangement direction of the connecting columns 13.

[0036] The central annular plate 2 has a hexagonal overall structure and fits into the support frame 1. Two insertion holes are formed on the surface of the central annular plate 2 to fit into the connecting posts 13. The central annular plate 2 is fitted onto the two connecting posts 13 through these holes and is fixed to them. Two opposite sides of the central annular plate 2 abut against the sides of the two mounting posts 14. The central annular plate 2 is positioned at the center of the support frame 1 in the first direction. A circular hollow area is formed in the center of the central annular plate 2, and the shape of the hollow area matches the distribution plate. The distribution plate is embedded in the hollow area of ​​the central annular plate 2, and the inner wall of the hollow area is tightly fitted to the side of the distribution plate.

[0037] The side annular plate 3 has the same structure as the central annular plate 2, the only difference being that the side annular plate 3 is slidably connected to the connecting post 13 via a socket. The mounting post 14 and the connecting post 13 together constrain the setting direction of the side annular plate 3, ensuring that the side annular plate 3 remains vertical when sliding along the connecting post 13. The hollow area in the middle of the side annular plate 3 is also used for the installation of the distribution plate. Two side annular plates 3, respectively located on both sides of the central annular plate 2 and symmetrical along the central annular plate 2, form a group. In this embodiment, only one group of side annular plates 3 is provided; in other embodiments, multiple groups can be provided.

[0038] Two side annular plates 3 in the same group are connected to each other by an adjusting assembly 6. The adjusting assembly 6 includes a left-hand and right-hand lead screw 61, a left-hand nut 62, a right-hand nut 63, and a power component 64. The left-hand and right-hand lead screw 61 is arranged along a first direction and its center position is flush with the central annular plate 2, and it is supported by the central annular plate 2. The left-hand nut 62 and the right-hand nut 63 are respectively fitted onto two areas with opposite thread directions on the left-hand and right-hand lead screw 61, and the threads on the inner walls of the left-hand nut 62 and the right-hand nut 63 are both engaged with the left-hand and right-hand lead screw 61. The outer walls of the left-hand nut 62 and the right-hand nut 63 are respectively fixedly connected to the sides of the two side annular plates 3 in the same group. The power component 64 is a servo motor, connected to one end of the left-hand and right-hand lead screw 61 and fixedly connected to the mounting post 14. The power component 64 drives the left-hand and right-hand lead screw 61 to rotate controllably along its central axis, so that the two side annular plates 3 in the same group move synchronously closer to or further away from the central annular plate 2 along the first direction, and maintain symmetry along the central annular plate 2. In this embodiment, two adjusting components 6 are provided, which are respectively connected to two mounting columns 14, and the power components 64 of the two adjusting components 6 operate synchronously. In this embodiment, an adjusting scale extending along the first direction is formed on the mounting column 14, and the zero mark of the adjusting scale is flush with the central annular plate 2, which is used to indicate the distance between each side annular plate 3 and the central annular plate 2.

[0039] Please see Figure 1 and Figure 2 The pressure roller assembly 5 includes a support member 51 and a roller 52. The support member 51 is elongated and extends along a second direction in the vertical plane. Since both the support frame 1 and the annular plate have circular openings in their middle portions, they together form a wiring channel extending along a first direction, allowing multiple pipe units to pass through. One end of the support member 51 is detachably connected to the annular plate, and the other end extends into the wiring channel. The portion of the support member 51 extending into the wiring channel forms an elongated wheel track 511. The wheel track 511 extends along the second direction, and in this embodiment, the wheel track 511 is constructed as an elongated hole, penetrating the support member 51 along a third direction in the vertical plane. The first direction, the second direction, and the third direction are mutually perpendicular. The roller 52 includes a rotating shaft 521 and a rotating roller 522. The rotating shaft 521 is cylindrical, extends along a third direction, and engages with the wheel track 511. One end of the rotating shaft 521 is slidably connected to the wheel track 511. A cylindrical rotating roller 522 is coaxially arranged with a rotating shaft 521 and is detachably rotatably connected to the end of the rotating shaft 521 away from the wheel track 511, allowing the rotating roller 522 to rotate freely around the rotating shaft 521. An annular groove 523 parallel to the second direction is formed by an indentation on the side of the rotating roller 522. The annular groove 523 is generally circular and has a semi-circular cross-section. The rotating roller 522 is constructed of nylon, which has high rigidity and helps extend its service life.

[0040] The pressure roller assembly 5 also includes a positioning block 53 and a positioning screw 54. The positioning block 53 is formed on the surface of the support portion and adjacent to the end of the wheel track 511. The positioning block 53 has a threaded hole extending through it in a second direction. The positioning screw 54 engages with the threaded hole of the positioning block 53 and passes through it. One end of the positioning screw 54 is rotatably connected to the surface of the rotating shaft 521 of the roller 52, allowing the rotating shaft 521 to slide controllably along the wheel track 511 as the positioning screw 54 rotates. When the roller 52 is subjected to pressure in the second direction, the rotating shaft 521 will not rotate due to the thread self-locking effect, and the roller 52 will not slide. A positioning scale extending in the second direction is provided on the side of the wheel track 511 to indicate the distance between the roller 52 and the positioning block 53.

[0041] In the same guide wheel assembly 4, the rollers 52 of each pressure roller assembly 5 are spaced at two different positions on the wheel track 511. In this embodiment, the rollers 52 connected to the two side annular plates 3 are in the same position in the second direction, but are in a different position in the second direction than the rollers 52 connected to the central annular plate 2. The high-rigidity tube unit 101 to be pre-twisted passes around each roller 52 of the same guide wheel assembly 4 in sequence, thereby making the high-rigidity tube unit 101 appear in a periodic wave shape. Since the diameter of the annular groove 523 is matched with the high-rigidity tube unit 101, it is ensured that the high-rigidity tube unit 101 moves along the wave-shaped tube passage formed between each roller 52, thereby causing the high-rigidity tube unit 101 passing through the tube passage to be pre-twisted.

[0042] To facilitate the passage of the corrugated high-rigidity tube unit 101, its corresponding unit passage diameter is relatively large. In this embodiment, the tube passage is located inside the unit passage. Adjusting the distance between the side annular plate 3 and the central annular plate 2 helps to adjust the unit length of the corrugated structure formed after the high-rigidity tube unit 101 is pre-twisted. Adjusting the position of each roller 52 helps to adjust the bending depth of the corrugated structure formed after the high-rigidity tube unit 101 is pre-twisted. By changing different rotating rollers 522, different diameters of high-rigidity tube units 101 can be accommodated. Through adaptive structural adjustments, it can meet the stranding requirements of various umbilical cables, exhibiting high versatility, and the structural stability of the umbilical cable can be improved through structural fine-tuning.

[0043] The cable distribution frame can be equipped with multiple sets of guide rollers 4, thereby simultaneously pre-twisting multiple high-rigidity tube units 101 within the same umbilical cable. In this embodiment, four sets of guide rollers 4 are included, that is, four pressure roller assemblies 5 are installed on each annular plate.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A branch tray frame for pre-twisting umbilical cable steel pipes, characterized in that, include: The central ring plate (2) is constructed as a plate with a hollow center; Side ring plates (3), two of which are symmetrically arranged on both sides of the central ring plate (2), the side ring plates (3) are constructed as plates with a hollow center, and the hollow part of the plate and the hollow part of the central ring plate (2) together form a wiring channel extending along the first direction. The guide wheel assembly (4) includes multiple pressure roller assemblies (5) arranged along the first direction. Each pressure roller assembly (5) is connected to the central annular plate (2) and the side annular plate (3) respectively, and corresponds one-to-one with the central annular plate (2) and each of the side annular plates (3). The pressure roller assembly (5) includes a support member (51) extending along the second direction and a roller (52) connected to the support member (51). One end of the support member (51) is connected to the central annular plate (2) or the side annular plate (3). The roller (52) is disposed in the wiring channel and is tangent to the first direction. Multiple rollers (52) in the same guide wheel assembly (4) are connected at intervals to two different positions on the support member (51) to form a wave-shaped tube passage. The high-rigidity tube unit (101) to be pre-twisted moves along the first direction and passes through the tube passage.

2. The branch tray frame for pre-twisting umbilical cable steel pipes as described in claim 1, characterized in that, It also includes a support frame (1), which includes a head end plate (11) and a tail end plate (12) arranged opposite to each other, and at least one connecting post (13) connecting the head end plate (11) and the tail end plate (12). The head end plate (11) and the tail end plate (12) are both constructed with a hollow structure in the middle to allow the wiring channel to pass through the support frame (1). The connecting post (13) extends along the first direction and is arranged around the wiring channel. The central annular plate (2) is fixedly connected to the connecting post (13), and the side annular plate (3) is slidably connected to the connecting post (13) and can controllably move closer to or away from the side annular plate (3).

3. The branch tray frame for pre-twisting umbilical cable steel pipes as described in claim 2, characterized in that, It also includes a pitch adjustment assembly (6), which includes a left-hand and right-hand screw (61), a left-hand nut (62), a right-hand nut (63), and a power component (64). The middle part of the left-hand and right-hand screw (61) corresponds to the central annular plate (2). The power component (64) drives the left-hand and right-hand screw (61) to rotate controllably along its central axis. The left-hand nut (62) and the right-hand nut (63) are sleeved on the left-hand and right-hand screw (61) and both cooperate with the left-hand and right-hand screw (61). As the left-hand and right-hand screw (61) rotates, they controllably and synchronously move closer to or further away from the central annular plate (2). The left-hand nut (62) and the right-hand nut (63) are respectively fixedly connected to the two side annular plates (3) in the same group.

4. The branch tray frame for pre-twisting umbilical cable steel pipes as described in claim 3, characterized in that, The support frame (1) has an adjustable scale extending along the first direction, used to indicate the distance between any of the side annular plates (3) and the central annular plate (2) in the first direction.

5. The branch tray frame for pre-twisting umbilical cable steel pipes as described in claim 1, characterized in that, The support member (51) has a wheel track (511) extending along the second direction, and the roller (52) is controllably slidably connected to the wheel track (511).

6. The branch tray frame for pre-twisting umbilical cable steel pipes as described in claim 5, characterized in that, The support member (51) includes a positioning block (53) disposed at one end adjacent to the wheel track (511), a positioning screw (54) extending along the second direction is threaded through the positioning block (53), and its end is rotatably connected to the roller (52). The roller (52) can controllably move closer to or further away from the positioning block (53) as the positioning screw (54) rotates.

7. The branch tray frame for pre-twisting umbilical cable steel pipes as described in claim 6, characterized in that, A positioning scale is formed on the support member (51) near the wheel track (511) to indicate the distance between the roller (52) and the positioning block (53).

8. The branch tray frame for pre-twisting umbilical cable steel pipes as described in claim 1, characterized in that, The roller (52) includes a rotating shaft (521) and a rotating roller (522) detachably connected to the rotating shaft (521). The rotating roller (522) rotates freely about the rotating shaft (521) extending in a third direction. An annular groove (523) is formed on the surface of the rotating roller (522) surrounding the rotating shaft (521). The annular groove (523) is fitted to the high-rigidity tube unit (101), and the high-rigidity tube unit (101) abuts against the inner wall of the annular groove (523).

9. A tubular stranding machine, characterized in that, The cable distribution frame, as described in any one of claims 1 to 8, for pre-twisting umbilical cable steel pipes, further includes a cable distribution plate, a drive mechanism, and a threading tube. The multiple cable distribution plates are respectively embedded in the hollowed-out parts of the central annular plate (2) and the side annular plate (3), and multiple cable distribution through holes are formed on their surfaces to form multiple unit passages that respectively cooperate with each pipe unit and extend along the first direction in the cable routing channel. The pipe unit includes the high-rigidity pipe unit (101). The pipe passage is located inside the unit passage corresponding to the high-rigidity pipe unit (101). The multiple pipe units that move along the first direction pass through the corresponding unit passage and are then inserted into the threading tube. The drive mechanism drives the cable distribution frame to rotate controllably along its central axis.

10. The tubular stranding machine as described in claim 9, characterized in that, The dividing discs are all circular in shape and their edges are attached to the central annular plate (2) or the side annular plate (3). The cylindrical threading tube is coaxially arranged with the dividing disc.

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