A centralized cable laying device suitable for high-speed cable production

Abstract

This invention discloses a centralized cable-laying device suitable for high-speed cable forming. The centralized cable-laying device includes a stranding body and a cradle. The stranding body includes a main shaft and at least two winches arranged axially along the main shaft. The cradle is installed between the two winches and includes a cradle frame and a cable-laying reel inside the cradle frame. The two ends of the cradle frame are rotatably connected to the corresponding winches, so that the rotation axis of the cable-laying reel is perpendicular to the main shaft. This invention, together with supporting high-speed cantilever single-strand cable forming machines and other equipment, forms a production line that replaces the existing cage-type cable forming machine production lines for railway signal cables and railway digital signal cables. This device improves production efficiency.

Description

Technical Field

[0001] This invention relates to the field of cable laying device technology, and in particular to a centralized cable laying device suitable for high-speed cable production. Background Technology

[0002] Currently, the main equipment used in the stranding process of railway signal cable production in China is the cage-type cable forming machine and the cantilever single stranding machine. The main disadvantage of the cage-type cable forming machine is that the stranding is achieved by rotating the cage, which is relatively large. Combined with the multiple cable sets, the total weight of the equipment is significant, resulting in a low cage rotation speed. This prevents a substantial increase in rotational speed, leading to relatively low production efficiency and failing to meet the market's demand for high-efficiency production.

[0003] Cantilever single-strand twisting machines use a cantilever rotation to generate stranding, offering high rotation speed and production efficiency. However, the wire-laying structure is unsuitable for producing multi-core signal cables, especially internally shielded railway digital signal cables. Wire-laying is mainly divided into centralized and decentralized methods. Centralized wire-laying has disadvantages: radial wire laying on the process panel, inconsistent with the production line direction; when the four wire groups change direction via guide rollers, bending deformation can easily cause changes in the structure of the four wire groups, especially deformation and breakage of the copper strip of the shielding group in internally shielded railway digital signal cables, severely affecting product specifications and failing to meet process requirements. Decentralized wire-laying has disadvantages: dispersed layout, large footprint, inconvenient operation, and unsuitable for stranding cables with a large number of cores. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, this invention proposes a centralized cable laying device suitable for high-speed cable forming. The technical solution adopted by this invention is as follows:

[0006] A centralized cable laying device suitable for high-speed cabling, the centralized cable laying device includes a strand and a cradle, the strand includes a main shaft and at least two winches arranged along its axial direction on the main shaft, the cradle is installed between the two winches, the cradle includes a cradle frame and a cable laying reel inside the cradle frame, the two ends of the cradle frame are rotatably connected to the corresponding winches, so that the rotation axis of the cable laying reel is perpendicular to the main shaft.

[0007] The main shaft has a first winch, a second winch and a third winch arranged sequentially along its axial direction. There are no less than two sets of cradles between the first winch and the second winch and between the second winch and the third winch. The cradles are movably connected to the winches. Support frames are provided at both ends of the main shaft.

[0008] The third winch is provided with a retraction assembly on one side, which is connected to the cradle.

[0009] Four sets of cradles are provided between the first winch and the second winch, and between the second winch and the third winch;

[0010] The four sets of cradles between the first winch and the second winch include: a second cradle, a third cradle, a fifth cradle, and a seventh cradle, and the four sets of cradles are arranged in a rectangular pattern;

[0011] The four sets of cradles between the second and third winches include: the first cradle, the fourth cradle, the sixth cradle, and the eighth cradle, which are arranged in a diamond shape.

[0012] The four sets of cradles between the first and second winches are all hollow rotating shafts connected to the first winch. The cable on the pay-off reel passes through the hollow rotating shaft and cooperates with the cantilever single twister.

[0013] The four sets of cradles between the second and third winches are all hollow rotating shafts connected to the second winch. A cable outlet hole is provided on the first winch at a position corresponding to the hollow rotating shaft on the second winch. The cable on the cable reel passes through the hollow shaft and the cable outlet hole and cooperates with the cantilever single winch.

[0014] The unwinding assembly includes a first unwinding mechanism and a second unwinding mechanism. The first unwinding mechanism includes a first unwinding motor, which is fixedly connected to the side of the third winch. The first unwinding motor is rotatably connected to the eighth cradle, and the first unwinding motor drives the eighth cradle to rotate.

[0015] The second unwinding mechanism includes a second unwinding motor, which is fixedly connected to one side of the third winch, and the rotating shaft of the second unwinding motor is rotatably connected to the fourth cradle.

[0016] The fourth cradle is provided with a fourth gear at one end, the third cradle is provided with a third gear, and the fourth gear meshes with the third gear through a transmission gear set; the fifth cradle is provided with a fifth gear at one end, and the fourth gear meshes with the fifth gear through a transmission gear set.

[0017] The first cradle is provided with a first gear, which meshes with the third gear provided on the third cradle through a transmission gear set; the second cradle is provided with a second gear, which meshes with the first gear provided on the first cradle through a transmission gear set.

[0018] The sixth cradle is provided with a sixth gear, which meshes with the fifth gear provided on the fifth cradle through a transmission gear set; the seventh cradle is provided with a seventh gear, which meshes with the sixth gear provided on the sixth cradle through a transmission gear set.

[0019] The first to seventh cradles rotate in the same direction.

[0020] The transmission gear set includes a transmission shaft and transmission gears fixedly connected to both ends of the transmission shaft. The transmission shaft passes through the second winch and is rotatably connected to the second winch. The gears at both ends of the transmission shaft mesh with the corresponding cradles.

[0021] One end of the main shaft is connected to a first rotary motor via a belt.

[0022] The beneficial effects of this invention are as follows:

[0023] By having eight sets of cradles on the winding body, the problems of scattered layout, large footprint, and inconvenient operation are effectively solved. Moreover, the total weight of a single cradle and cable group is relatively light and the size is small, making it suitable for high-speed rotation.

[0024] The four sets of cradles between the first and second winches are arranged in a rectangular pattern, and the four sets of cradles between the second and third winches are arranged in a diamond pattern. The eight sets of cradles are staggered so that the cable exit direction on the pay-off reel is parallel to the main shaft and consistent with the production line direction, thus avoiding bending deformation that could cause changes in the cable structure.

[0025] The third winch is equipped with a first unwinding motor and a second unwinding motor on its side. The two sets of motors solve the problem that the overall unwinding torque of the traditional unwinding gear set is a fixed value and cannot be adjusted separately. The transmission gear set ensures that the rotation direction of the first cradle to the seventh cradle is consistent, and that the rotation direction of the cradle matches the rotation speed and the matching cantilever single winch.

[0026] The design incorporates a high-speed centralized cable laying machine and supporting high-speed cantilever single twisting machine to form a production line that can replace the existing cage-type cable forming machine production line for railway signal cables and railway digital signal cables. Compared with the cage-type cable forming machine, the production efficiency can be increased by more than 2 times. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is a top view of the structure of the present invention;

[0029] Figure 3 yes Figure 2 A schematic diagram of the structure at point A in the middle. Detailed Implementation

[0030] The invention will now be further described with reference to the accompanying drawings.

[0031] like Figure 1-3As shown, this invention is a centralized cable-laying device suitable for high-speed cabling. The centralized cable-laying device includes a stranding body and a cradle. The stranding body includes a main shaft 1 and at least two winches arranged axially on the main shaft 1. The cradle is installed between the two winches and includes a cradle frame and a cable-laying reel 14 inside the cradle frame. The two ends of the cradle frame are rotatably connected to the corresponding winches, so that the rotation axis of the cable-laying reel 14 is perpendicular to the main shaft 1. During operation, the cable-laying reel 14 rotates around its own axis inside the cradle, and the cable exit direction on the cable-laying reel 14 is parallel to the main shaft.

[0032] The main shaft 1 is provided with a first winch 3, a second winch 4 and a third winch 5 arranged in sequence along its axial direction. At least two sets of cradles are provided between the first winch 3 and the second winch 4 and between the second winch 4 and the third winch 5. The cradles are movably connected to the winches. Support frames 2 are provided at both ends of the main shaft.

[0033] The third winch is equipped with a de-twist assembly on one side, which is connected to the cradle and drives the cradle to rotate, matching the matching cantilever single winch.

[0034] To achieve high-speed rotation of the cradles, four sets of cradles are provided between the first winch 3 and the second winch 4, and between the second winch 4 and the third winch 5. The four sets of cradles between the first winch 3 and the second winch 4 are: second cradle 6, third cradle 7, fifth cradle 8, and seventh cradle 9, arranged in a rectangular pattern. The four sets of cradles between the second winch 4 and the third winch 5 are: fourth cradle 10, eighth cradle 11, first cradle 12, and sixth cradle 13, arranged in a diamond pattern. The cradles are rotatably connected to the winches. The eight sets of cradles on the winch body effectively solve the problems of traditional wire-laying devices being scattered, occupying a large area, and being inconvenient to operate. The newly provided individual cradles are lighter in weight and smaller in size, making them suitable for high-speed rotation.

[0035] To ensure that the cable exit direction on the pay-off reel 14 is parallel to the main shaft 1 and consistent with the production line direction, the four sets of cradles between the first winch 3 and the second winch 4 are all hollow rotating shafts connected to the first winch 3. This facilitates the cable on the pay-off reel 14 passing through the hollow rotating shafts and engaging with the cantilever single twister. The cantilever single twister is existing technology. While twisting the cable, the cantilever single twister pulls the pay-off reel 14 to rotate around its own axis within the cradle, achieving passive cable release from the pay-off reel 14. The four sets of cradles between the second winch 4 and the third winch 5 are all hollow rotating shafts connected to the second winch. Cable exit holes are provided on the first winch at positions corresponding to the hollow rotating shafts on the second winch. The cable on the pay-off reel 14 passes through the hollow shafts and cable exit holes to engage with the cantilever single twister. When the cantilever single twister is working, it pulls the pay-off reel 14 to rotate around its own axis in the cradle while twisting the cable, so as to realize the passive pay-off of the pay-off reel 14. The cable exit direction on the pay-off reel 14 is parallel to the main shaft 1 and consistent with the production line direction, so as to avoid bending deformation and changes in the cable structure.

[0036] To facilitate the replacement of the wire feeding reel 14 inside the cradle, one end of the main shaft 1 is connected to a first rotary motor 15 via a belt, which can drive the winding body to rotate.

[0037] In actual production, in order to reduce the deformation of the wire core during stranding, avoid damage to the insulation due to deformation, and make the cable have better flexibility, it is necessary to untwist the cable released from the reel 14. However, the traditional gear untwist has a fixed overall untwist rate, which cannot be adjusted separately and cannot meet the process requirements of different wires.

[0038] To meet the requirements of the processing technology and to make the device more widely applicable, and to solve the problem that the overall unwinding torque rate of traditional gear unwinding is a fixed value and cannot be adjusted individually, the unwinding torque assembly includes a first unwinding torque mechanism and a second unwinding torque mechanism. The first unwinding torque mechanism includes a first unwinding torque motor 16, which is fixedly connected to the side of the third winch 5. The first unwinding torque motor 16 is rotatably connected to the eighth cradle 11, and the first unwinding torque motor 16 drives the eighth cradle 11 to rotate.

[0039] The second unwinding mechanism includes a second unwinding motor 17, which is fixedly connected to one side of the third winch 5. The rotating shaft of the second unwinding motor 17 is rotatably connected to the fourth cradle 10. The third cradle 7 and the fifth cradle 8 are arranged symmetrically in the upper and lower parts. The fourth cradle 10 is located on one side between the third cradle 7 and the fifth cradle 8. Transmission gear sets 18 are respectively provided between the fourth cradle 10 and the third cradle 7, and between the fifth cradle 8 and the fourth cradle 10. The two transmission gear sets 18 are symmetrical in the upper and lower parts.

[0040] Specifically, the fourth cradle is provided with a fourth gear 4-1 at one end, and the third cradle 7 is provided with a third gear 3-1. The fourth gear 4-1 and the third gear 3-1 are meshed through a transmission gear set 18, so that the fourth cradle 10 drives the third cradle 7 to rotate; the fifth cradle 8 is provided with a fifth gear at one end, and the fourth gear 4-1 and the fifth gear are meshed through a transmission gear set 18, so that the fourth cradle 10 drives the fifth cradle 8 to rotate.

[0041] The first cradle 12 is provided with a first gear 1-1, which meshes with the third gear provided on the third cradle 7 through a transmission gear set 18, thereby causing the third cradle 7 to drive the first cradle 12 to rotate; the second cradle 6 is provided with a second gear 2-1, which meshes with the first gear 1-1 provided on the first cradle 12 through a transmission gear set 18, thereby causing the first cradle 12 to drive the second cradle 6 to rotate.

[0042] The sixth cradle 13 is provided with a sixth gear, which meshes with the fifth gear provided on the fifth cradle 8 through a transmission gear set 18, thereby causing the fifth cradle 8 to drive the sixth cradle 13 to rotate; the seventh cradle 9 is provided with a seventh gear, which meshes with the sixth gear provided on the sixth cradle 13 through a transmission gear set 18, thereby causing the sixth cradle 13 to drive the seventh cradle 9 to rotate.

[0043] The transmission gear set 18 includes a transmission shaft and transmission gears fixedly connected to both ends of the transmission shaft. The transmission shaft passes through the second winch and is rotatably connected to the second winch. The gears at both ends of the transmission shaft mesh with the corresponding cradles, thereby driving the corresponding cradles to rotate in the same direction.

[0044] The first unwinding motor 16 and the second unwinding motor 17 are variable frequency speed control motors, which facilitate the adjustment of the rotation direction and rotation speed of the motors, ensuring that the rotation direction of the cradle matches the matching cantilever single twister.

[0045] Working principle:

[0046] The winding body is equipped with multiple sets of cradles, which effectively solves the problem of scattered layout and large footprint. Each cradle is equipped with a feed reel 14, which is movably connected to the cradle. The feed reel 14 rotates around its own axis inside the cradle. The cable exit direction on the feed reel 14 is parallel to the main shaft 1 and consistent with the production line direction, avoiding bending deformation that could cause changes in the cable structure.

[0047] The third winch is equipped with a first unwinding motor and a second unwinding motor on its side. The parameters of the first unwinding motor and the second unwinding motor can be set separately, and the unwinding rate can be adjusted. The two sets of unwinding motors solve the problem that the overall unwinding rate of traditional gear unwinding is a fixed value and cannot be adjusted separately. The transmission gear set 18 ensures that the rotation direction of the first cradle 12 to the seventh cradle 9 is consistent, ensuring that the cradle and the matching high-speed cantilever single winch are matched.

[0048] The above solution is only one implementation method. Depending on the needs of cable stranding, an unlimited number of cradles can be used, and the rotation direction can be selected. The cradles can be equipped with a retraction mechanism as needed. The retraction mechanism is controlled by a retraction motor. Two or more sets of retraction mechanisms can be set, and the retraction rate of each set can be adjusted. The production line scheme with a retraction cradle and a matching high-speed cantilever single stranding machine is within the spirit and scope of the technical solution of the present invention.

[0049] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this invention and to simplify 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. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0050] If the terms "first" or "second" are used in this document to define components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing the invention and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A centralized cable laying device suitable for high-speed cable forming, the centralized cable laying device comprising a strand and a cradle, characterized in that, The winch body includes a main shaft and at least two winches arranged along its axial direction on the main shaft. The cradle is installed between the two winches. The cradle includes a cradle frame and a feed reel inside the cradle frame. The two ends of the cradle frame are rotatably connected to the corresponding winches, so that the rotation axis of the feed reel is perpendicular to the main shaft. The main shaft has a first winch, a second winch and a third winch arranged sequentially along its axial direction. There are no less than two sets of cradles between the first winch and the second winch and between the second winch and the third winch. The cradles are movably connected to the winches. Support frames are provided at both ends of the main shaft. The third winch is provided with a retraction assembly on one side, and the retraction assembly is connected to the cradle; Four sets of cradles are provided between the first winch and the second winch, and between the second winch and the third winch; The four sets of cradles between the first winch and the second winch include: a second cradle, a third cradle, a fifth cradle, and a seventh cradle, and the four sets of cradles are arranged in a rectangular pattern; The four sets of cradles between the second and third winches include: the first cradle, the fourth cradle, the sixth cradle, and the eighth cradle, which are arranged in a diamond shape. One end of the main shaft is connected to a first rotary motor via a belt.

2. The centralized cable laying device for high-speed cabling according to claim 1, characterized in that, The four sets of cradles between the first and second winches are all hollow rotating shafts connected to the first winch. The cable on the pay-off reel passes through the hollow rotating shaft and cooperates with the cantilever single twister. The four sets of cradles between the second and third winches are all hollow rotating shafts connected to the second winch. A cable outlet hole is provided on the first winch at a position corresponding to the hollow rotating shaft on the second winch. The cable on the cable reel passes through the hollow shaft and the cable outlet hole and cooperates with the cantilever single twister.

3. The centralized cable laying device for high-speed cabling according to claim 2, characterized in that, The unwinding assembly includes a first unwinding mechanism and a second unwinding mechanism. The first unwinding mechanism includes a first unwinding motor, which is fixedly connected to the side of the third winch. The first unwinding motor is rotatably connected to the eighth cradle, and the first unwinding motor drives the eighth cradle to rotate. The second unwinding mechanism includes a second unwinding motor, which is fixedly connected to one side of the third winch, and the rotating shaft of the second unwinding motor is rotatably connected to the fourth cradle. The fourth cradle is provided with a fourth gear at one end, the third cradle is provided with a third gear, and the fourth gear meshes with the third gear through a transmission gear set; the fifth cradle is provided with a fifth gear at one end, and the fourth gear meshes with the fifth gear through a transmission gear set. The first cradle is provided with a first gear, which meshes with the third gear provided on the third cradle through a transmission gear set; the second cradle is provided with a second gear, which meshes with the first gear provided on the first cradle through a transmission gear set. The sixth cradle is provided with a sixth gear, which meshes with the fifth gear provided on the fifth cradle through a transmission gear set; the seventh cradle is provided with a seventh gear, which meshes with the sixth gear provided on the sixth cradle through a transmission gear set. The first to seventh cradles rotate in the same direction.

4. The centralized cable laying device for high-speed cabling according to claim 3, characterized in that, The transmission gear set includes a transmission shaft and transmission gears fixedly connected to both ends of the transmission shaft. The transmission shaft passes through the second winch and is rotatably connected to the second winch. The gears at both ends of the transmission shaft mesh with the corresponding cradles.

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