A method and device for pushing bent cables

Abstract

The present invention discloses a method and device for pushing a bent cable, comprising: a pushing lifting seat, a pushing lifting cylinder, a pushing card seat, and a pushing motor. The pushing lifting cylinder can drive the pushing card seat to rise and fall, and the pushing motor can drive the pushing card seat to move back and forth in the pushing direction. A pushing card slot is provided on the pushing card seat, and the bent cable can be embedded in the pushing card slot. The pushing lifting cylinder drives the pushing card seat to rise, so that the bent cable is embedded in the pushing card slot; the pushing motor drives the pushing card seat and the bent cable to push a U-shaped bend along the pushing direction; then the pushing card seat descends vertically, and the pushing card seat is separated from the bent cable; finally, the pushing card seat returns to its original position in the opposite direction of the pushing direction. This enables pushing the bent cable in an intermittent pushing manner. This makes the pushing distance more accurate, ensures that the size of the U-shaped bend remains consistent, improves the bending quality, and ensures that the bent cable can be smoothly embedded in the wire slot of the linear motor stator.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic levitation transportation, and in particular to a bent cable pushing method and a pushing device. Background Art

[0002] Maglev trains offer advantages such as high speed, low energy consumption, low noise, zero pollution, safety, comfort, and minimal maintenance. They hold great promise for development and are a key area of development for rail transit. Currently, commercial maglev lines are operating in Shanghai and Changsha, with several more currently under planning and construction.

[0003] During the construction of the dedicated maglev line, the required linear motor stators are formed using cable bending equipment, which forms a serpentine cable consisting of multiple continuous U-bends. During this U-bend process, the cable must be secured. After each U-bend, the bent cable is pushed forward while the straightened cable is dragged into the U-bend machine for the next U-bend. Therefore, a dedicated cable-bending device is required. During the bending process, the cable shape must be maintained while the pushing distance must be precise to ensure the correct dimensions of each U-bend.

[0004] After patent search, the following patents are related to this application:

[0005] 1. A Chinese invention patent, application number 03129527.4, filed on June 26, 2003, publication number CN1283507C, published on November 8, 2006, and titled "Semi-automatic Laying Combination Vehicle for Maglev Train Stator Coils," is filed by Shanghai Maglev Transportation Development Co., Ltd. The patent comprises a power tractor, an equipment carrier, a formed coil conveyor, an operating platform, and a wire-inserting trolley. The power tractor, equipment carrier, formed coil conveyor, and operating platform are connected by a traction linkage. The wire-inserting trolley is placed on the operating platform. The power tractor is equipped with a diesel generator to power the entire vehicle, and the equipment carrier is equipped with a cable unwinding rack and coil bending equipment. However, the patent does not disclose the specific structure of the cable bending method or device.

[0006] 2. The Chinese invention patent with application number "202011372712.8", application date "2020.11.30", publication number "CN112688505A", publication date "2021.04.20", titled "Magnetic Levitation Long Stator Coil Laying Vehicle System", and applicant "Shanghai Installation Engineering Group Co., Ltd." discloses a magnetic levitation long stator coil laying vehicle system, comprising: car No. 1, whose car body is loaded with cable drums; car No. 2, whose car body is equipped with cable bending equipment for bending the cable conveyed by the cable drum of car No. 1 into long stator coils; car No. 3, whose car body is provided with external operating platforms on both sides for receiving the long stator coils conveyed by car No. 2. However, the patent does not involve the specific structure of the bending cable pushing method and pushing device.

[0007] 3. The Chinese invention patent with application number "202110165896.9", application date "2021.02.07", publication number "CN112510939A", publication date "2021.03.16", name "Automatic bending device and method for magnetic levitation long stator coil", and applicant "Shanghai Installation Engineering Group Co., Ltd." discloses an automatic bending device and method for magnetic levitation long stator coil, including a first motion mechanism, a second motion mechanism, a third motion mechanism and a control device. The control device controls the motion relationship between the first motion mechanism, the second motion mechanism and the third motion mechanism to realize the automated operation of bending the cable into a magnetic levitation long stator coil, which can improve the bending efficiency, bending accuracy and reduce labor costs. However, the patent also does not involve the specific structure of the bending cable pushing method and the pushing device. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a bent cable pushing method and pushing device in response to the defects existing in the prior art.

[0009] To address the above-mentioned technical problems, the present invention provides a method for pushing a bent cable. The bent cable is formed by bending the cable to form a plurality of continuous U-shaped bends, comprising curved segments and parallel segments. During the bending process, the bent cable is pushed intermittently. Pushing is stopped during the bending process to secure the cable and allow the bending process to proceed.

[0010] Furthermore, after completing one U-bend, the pushing device is used to push the bent cable a distance equal to the spacing between two U-bends. The straight segment 901 of the bent cable required for bending one U-bend is dragged into the U-bend device to bend the next U-bend.

[0011] Furthermore, a push-in card holder with a push-in card slot is used to position and push the bent cable. Using the push-in card slot for positioning makes the push distance more precise, ensuring that the U-shaped bend size remains consistent, improving the bending quality, and ensuring that the bent cable can be smoothly inserted into the wire slot of the linear motor stator.

[0012] Furthermore, after completing one push, the push card holder returns to its original position, ready for the next push.

[0013] The above-mentioned bent cable pushing method includes the following steps:

[0014] S1: The push card seat rises vertically, and the push card slot clamps the curved cable parallel section of the curved cable;

[0015] S2: The push card seat drives the bent cable to push 2 U-shaped bends along the pushing direction;

[0016] S3: The push card holder descends vertically, and the push card holder is separated from the bent cable;

[0017] S4: Push the card holder back to its original position in the opposite direction of the pushing direction.

[0018] A pushing device based on the above-mentioned bent cable pushing method includes a pushing card holder and a pushing assembly. The pushing card holder is provided with a pushing card slot perpendicular to the pushing direction. The width of the pushing card slot is not less than the cable diameter. The bent cable can be inserted into the pushing card slot. The pushing assembly drives the pushing card holder and the bent cable along the pushing direction. The pushing card slot is used for positioning, making the pushing distance more precise, ensuring that the U-shaped bend size remains consistent and that the bent cable can be smoothly inserted into the wire slot of the linear motor stator.

[0019] Furthermore, the pushing assembly includes: a pushing lift seat, a pushing motor, a pushing gear, a pushing rack, a pushing guide rail, and a pushing guide groove; the pushing guide rail is arranged on the upper side of the pushing lift seat along the pushing direction; the pushing gear is rotatably connected to the pushing motor, and the pushing motor is arranged on the pushing lift seat; the pushing rack is arranged on one side of the pushing card seat and meshes with the pushing gear; the pushing guide groove is arranged on the lower side of the pushing card seat and cooperates with the pushing guide rail; the pushing motor drives the pushing card seat to move back and forth along the pushing direction via the pushing gear and the pushing rack, thereby achieving intermittent pushing of the bent cable.

[0020] Furthermore, a plurality of push card slots are arranged at intervals on the upper side of the push card seat in a direction perpendicular to the pushing direction, and the spacing between adjacent push card slots is the same as the spacing between the U-shaped bends, so as to shape the bent U-shaped bends.

[0021] Furthermore, a shaping fixture groove is provided on the upper side of the pushing clamping seat along the pushing direction, so that the shaping fixture can be used to shape the pushed bent cable to avoid rebound deformation of the bent cable.

[0022] Furthermore, the system includes a push base, a push lift guide rod, a push lift cylinder, and a push lift rod. Multiple vertically arranged push lift guide rods have their lower ends fixed to the push base and their upper ends connected to the underside of the push lift seat, thereby jointly supporting the push lift seat. The push lift cylinder is fixed to the push base, and its push lift rod is vertically arranged and connected to the push lift seat. The push lift cylinder drives the push lift seat and the push card seat to move vertically upward and downward as a whole via the push lift rod. The push card seat is lowered to separate from the curved cable, allowing it to return to its original position and prepare for the next push.

[0023] The present invention has the following beneficial effects: using a push-cable holder with a push slot to position the bent cable and using an intermittent push method to push it, the push distance is more precise, ensuring that the dimensions of the U-shaped bend remain consistent, improving the bending quality, and ensuring that the bent cable can be smoothly inserted into the wire slot of the linear motor stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the bent cable.

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the linear motor stator cable bending equipment.

[0026] Figure 3 Schematic diagram of the three-dimensional structure of the bent cable pushing device Figure 1 ,

[0027] Figure 4 Schematic diagram of the three-dimensional structure of the bent cable pushing device Figure 2 ,

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the initial position of the push.

[0029] Figure 6 Schematic diagram of the three-dimensional structure of the push end position.

[0030] In the figure: 100—cable straightening device;

[0031] 200—U-shaped bending device;

[0032] 300—bent cable pushing device, 301—pushing base, 302—pushing lifting guide rod, 303—pushing lifting seat, 304—pushing motor, 305—pushing gear, 306—pushing rack, 307—pushing seat, 308—pushing slot, 309—forming fixture slot, 310—pushing lifting cylinder, 311—pushing lifting rod, 312—pushing guide rail, 313—pushing guide slot, H—forming fixture slot width, L1—U-bend spacing, X—pushing direction, Z—vertical.

[0033] 400—end shaping device;

[0034] 500—integral base;

[0035] 900—curved cable, 901—straight section of curved cable, 902—curved section of curved cable, 903—parallel section of curved cable, 904—shaped section of curved cable, L1—U-bend spacing, d—curved cable diameter. DETAILED DESCRIPTION

[0036] The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings:

[0037] like Figure 1 As shown, the linear motor stator required for the construction of the dedicated maglev line is formed using cable bending equipment to form a curved cable 900, which is then transported to the installation site for installation. Curved cable 900 is a serpentine structure consisting of multiple continuous U-shaped bends, including a straight segment 901, a parallel segment 902, a curved segment 903, or a shaped segment 904. The U-shaped bends are spaced at intervals of L1. During the U-shaped bend formation process, the cable must be secured. After forming one U-shaped bend, the bent cable is pushed forward while the straightened cable is dragged into the U-shaped bending device 200 for the next U-shaped bend.

[0038] like Figure 2 As shown, the linear motor stator cable bending device of the present invention includes: a cable straightening device 100, a U-shaped bending device 200, a bent cable pushing device 300, an end shaping device 400 and an integral base 500; the cable straightening device 100, the U-shaped bending device 200, the bent cable pushing device 300 and the end shaping device 400 are sequentially arranged on the integral base 500 and are hoisted or transported as a whole through the integral base 500.

[0039] The bending cable pushing device 300 of the present invention is as follows Figure 3 and 4As shown, the pusher assembly includes a push base 301, a push lift guide rod 302, a push lift base 303, a push motor 304, a push gear 305, a push rack 306, a push base 307, a push slot 308, a sizing fixture slot 309, a push lift cylinder 310, a push lift rod 311, a push guide rail 312, and a push guide slot 313. The push base 307 is provided with multiple push slots 308 spaced perpendicular to the push direction X. The width of each push slot 308 is no less than the cable diameter d, and the spacing between adjacent push slots 308 is the same as the U-bend spacing L1. The bent cable 900 can be inserted into the push slots 308. The push assembly drives the push base 307 and the bent cable 900 to move along the push direction X. The push slots 308 are used for positioning, making the push distance more precise, ensuring that the dimensions of the U-bend remain consistent and that the bent cable 900 can be smoothly inserted into the wire slot of the linear motor stator.

[0040] The pushing assembly can be a cylinder, a hydraulic rod, or an electric actuator that pushes the pushing base 307 to move along the pushing direction X. The pushing assembly of the embodiment of the present invention includes: a pushing base 301, a pushing lifting guide rod 302, a pushing lifting base 303, a pushing motor 304, a pushing gear 305, a pushing rack 306, a pushing lifting cylinder 310, a pushing lifting rod 311, a pushing guide rail 312, and a pushing guide groove 313.

[0041] The lower ends of multiple pushing and lifting guide rods 302 arranged vertically in Z are fixed on the pushing base 301, and the upper ends are connected to the lower side of the pushing and lifting seat 303, jointly supporting the pushing and lifting seat 303; the pushing and lifting cylinder 310 is fixed on the pushing base 301, and the pushing and lifting rod 311 of the pushing and lifting cylinder 310 is arranged vertically in Z and connected to the pushing and lifting seat 303. The pushing and lifting cylinder 310 drives the pushing and lifting seat 303 and the pushing card seat 307 to rise and fall as a whole along the vertical Z through the pushing and lifting rod 311.

[0042] The pushing guide rail 312 is arranged on the upper side of the pushing lifting seat 303 along the pushing direction X, the pushing gear 305 is rotatably connected to the pushing motor 304, and the pushing motor 304 is arranged on the pushing lifting seat 303; the pushing rack 306 is arranged on one side of the pushing card seat 307 and meshes with the pushing gear 305; the pushing guide groove 313 is arranged on the lower side of the pushing card seat 307 and cooperates with the pushing guide rail 312; the pushing motor 304 drives the pushing card seat 307 to move back and forth along the pushing direction X through the pushing gear 305 and the pushing rack 306.

[0043] The bending cable pushing method of the present invention is as follows Figure 5 and 6 As shown, the following steps are included:

[0044] S1: Activate the push-lift cylinder 310, extending the push-lift rod 311 in the vertical direction Z, raising the push-lift base 307 in the vertical direction Z. Multiple push-lift guide rods 302 arranged vertically in the vertical direction Z extend as the push-lift base 307 rises, maintaining the upper side of the push-lift base 307 horizontally. As the push-lift base 307 rises, the push-lift slot 308 engages the curved cable parallel section 903 of the curved cable 900, shaping and positioning the curved cable 900.

[0045] S2: The pushing motor 304 is started, and the pushing motor 304 drives the pushing gear 305 to rotate, pushing the pushing rack 306 along the pushing direction X. Since the pushing rack 306 is fixed to one side of the pushing clamp 307, the pushing clamp 307 drives the bent cable 900 to push two U-shaped bends along the pushing direction X by a distance L1.

[0046] S3: The pushing motor 304 stops rotating, and then controls the pushing lifting cylinder 310 to shorten the pushing lifting rod 311 along the vertical direction Z, and the pushing clamping seat 307 descends in the vertical direction Z, and the pushing clamping seat 307 is separated from the bent cable 900.

[0047] S4: the pushing motor 304 drives the pushing gear 305 to rotate in the opposite direction, so that the pushing card seat 307 moves in the opposite direction of the pushing direction X by two U-shaped bend distances L1, and returns the pushing card seat 307 to its original position, ready for the next pushing.

[0048] By the intermittent pushing method described above, the U-shaped bending device 200 and the cable end shaping device 400 are used to perform bending and end shaping to manufacture a qualified bent cable 900 to meet the needs of maglev line construction.

[0049] In summary, the present invention provides the following beneficial effects: Using a push-cable holder with a push slot to position the bent cable and using intermittent pushing, the push distance is more precise, ensuring consistent U-bend dimensions, improving bending quality, and ensuring the bent cable can be smoothly inserted into the linear motor stator slot.

[0050] The above embodiments are only for the purpose of illustrating the present invention, and are not intended to limit the present invention. Those skilled in the art may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of protection of the present invention, and the scope of protection of the present invention should be defined by the claims.

Claims

1. A method for pushing a bent cable using a bent cable pushing device, wherein the bent cable (900) is formed by bending the cable to form a plurality of continuous U-shaped bends consisting of bent cable sections (902) and bent cable parallel sections (903); characterized in that: The bent cable pushing device comprises a pushing card seat (307) and a pushing assembly. The pushing card seat (307) is provided with a pushing card slot (308) perpendicular to the pushing direction X. The width of the pushing card slot (308) is not less than the cable diameter (d). The bent cable (900) can be inserted into the pushing card slot (308). The pushing assembly drives the pushing card seat (307) and the bent cable (900) to move along the pushing direction X. The pushing assembly comprises: a pushing lifting seat (303), a pushing motor (304), a pushing gear (305), a pushing rack (306), a pushing guide rail (312) and a pushing guide groove (313); the pushing guide rail (312) is arranged on the upper side of the pushing lifting seat (303) along the pushing direction X, the pushing gear (305) is rotatably connected to the pushing motor (304), and the pushing motor (304) is arranged on the pushing lifting seat (303); the pushing rack (306) is arranged on one side of the pushing card seat (307) and meshes with the pushing gear (305); the pushing guide groove (313) is arranged on the lower side of the pushing card seat (307) and cooperates with the pushing guide rail (312); the pushing motor (304) drives the pushing card seat (307) to move back and forth along the pushing direction X through the pushing gear (305) and the pushing rack (306); A plurality of push card slots (308) are arranged at intervals on the upper side of the push card seat (307) along a direction perpendicular to the push direction X, and the spacing between adjacent push card slots (308) is the same as the U-shaped bend spacing (L1); During the cable bending process, the bent cable (900) is pushed in an intermittent pushing manner. After completing one U-shaped bend, the bent cable (900) is pushed by a pushing device to a distance of two U-shaped bends (L1). The bent cable (900) is positioned and pushed by a pushing card seat (307) with a pushing card slot (308). After completing one push, the pushing card seat (307) returns to its original position. The bent cable pushing method using the bent cable pushing device comprises the following steps: S1: the push card seat (307) rises vertically in the Z direction, and the push card slot (308) clamps the curved cable parallel section (903) of the curved cable (900); S2: The pushing card seat (307) drives the bent cable (900) to push two U-shaped bends (L1) along the pushing direction X; S3: the push card holder (307) descends in the vertical direction Z, and the push card holder (307) is separated from the curved cable (900); S4: Push the card holder (307) back to its original position in the opposite direction of the pushing direction X.

2. The method for pushing a bent cable using a bent cable pushing device according to claim 1, characterized in that: A shaping fixture groove (309) is provided on the upper side of the pushing card seat (307) along the pushing direction X.

3. The method for pushing a bent cable using a bent cable pushing device according to claim 2, characterized in that: The push-lifting device further comprises a push-lifting base (301), a push-lifting guide rod (302), a push-lifting cylinder (310) and a push-lifting rod (311). The lower ends of the plurality of push-lifting guide rods (302) arranged in the vertical direction Z are fixed to the push-lifting base (301), and the upper ends are connected to the lower side of the push-lifting seat (303), thereby jointly supporting the push-lifting seat (303). The push-lifting cylinder (310) is fixed to the push-lifting base (301), and the push-lifting rod (311) of the push-lifting cylinder (310) is arranged in the vertical direction Z and connected to the push-lifting seat (303). The push-lifting cylinder (310) drives the push-lifting seat (303) and the push-clamping seat (307) to rise and fall in the vertical direction Z as a whole through the push-lifting rod (311).

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