Full-automatic winding machine for mooring rope preparation

Abstract

The full-automatic winding machine comprises I-shaped steel beams, the two I-shaped steel beams are arranged in parallel, reinforcing plates are fixedly connected between the two adjacent ends of the I-shaped steel beams, and a longitudinal moving platform and two winding assemblies are connected between the two I-shaped steel beams; a traction assembly used for driving the longitudinal moving platform to conduct linear displacement along the I-shaped steel beam is connected between the two reinforcing plates, the output end of the first motor penetrates through the longitudinal moving platform to be fixedly connected with a winding platform with a working face, the first sliding block can slide along the I-shaped steel beam, and after a fastening bolt is tightened, the winding platform is driven by the first sliding block to conduct linear displacement along the I-shaped steel beam. The distance between the two winding rollers is adjustable, a strand of the mooring rope is fixed to the outer wall of one winding roller, the second motor is started, the second motor drives the traction wheel to rotate, the traction wheel drives the traction line to do circulating motion, and in the process, the traction line can drive the longitudinal moving platform to change the position, and the strand of the mooring rope can be pulled to be unwound from the unwinding roller.

Description

Technical Field

[0001] The invention relates to the technical field of winding machines, in particular to a full-automatic winding machine for preparing mooring cables. Background Art

[0002] The breakage of cables during mooring can easily cause the ship to drift out of control, which has a significant impact on ship safety and port production. Many ship cable breakage accidents have occurred in major ports. Therefore, choosing safe and reliable rigging can maximize the load generated by the movement of the ship, thereby improving the safety of mooring. When selecting cable specifications, it is necessary to give the requirements for the maximum working force. It is necessary to choose mooring cables that have sufficient capacity and the appropriate length to meet the usage. In addition, with the development of offshore floating platforms, mooring positioning requirements are becoming higher and higher, and high-strength and high-modulus cables need to be selected for mooring. Cables made by traditional braiding processes cannot meet the high positioning requirements of offshore mooring platforms. Therefore, it is necessary to invent and design equipment for producing cables using new processes.

[0003] When preparing cables, workers are required to drag the yarn between two wire rollers to realize the production of cables. However, the manual winding method has high labor intensity, the efficiency of single-wire winding is low, and manual pulling cannot ensure that the yarn is in a taut state in real time, which is not good for the overall strength of the mooring cable. Therefore, the present invention discloses a fully automatic winding machine for preparing mooring cables to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a fully automatic winding machine for preparing mooring cables, so as to solve the technical problems that the labor intensity of manual cable winding is high, the efficiency of single-line winding is low, and manual pulling cannot ensure that the yarn is in a taut state in real time, which is unfavorable to the overall strength of the mooring cable.

[0005] To achieve the above purpose, the present invention solves the above technical problems as follows:

[0006] A fully automatic winding machine for preparing mooring cables, comprising an I-beam, two of the I-beams being arranged parallel to each other, a reinforcing plate being fixedly connected between two adjacent ends of the I-beam, a longitudinal movement platform and two winding assemblies being connected between the two I-beams, a traction assembly being connected between the two reinforcing plates for driving the longitudinal movement platform to move linearly along the I-beam, a first motor being fixedly connected to the upper side of the longitudinal movement platform, an output end of the first motor being fixedly connected to a winding platform having a working surface through the longitudinal movement platform, wire-paying assemblies being installed on different working surfaces of the winding platform, and a wire-arranging assembly being installed on the lower side of the winding platform, so that the wire strands led out from the wire-paying assembly are synchronously wound between the two winding assemblies after passing through the wire-arranging assembly.

[0007] In one embodiment of the present application, the winding assembly includes a first slider slidably connected to the lower half of the I-beam and a concave frame fixedly connected between the two first sliders, the upper middle side of the concave frame is fixedly connected to a lifting platform, the upper side of the lifting platform is fixed with an assembly column, the outer side of the assembly column is limitedly plugged with a winding roller, and the side of the first slider away from the I-beam is threadedly connected with a fastening bolt.

[0008] In one embodiment of the present application, the traction assembly includes a vertical shaft rotatably embedded in both ends of the reinforcement plate and a second motor fixed to the lower side of one of the reinforcement plates, and traction wheels are fixed to the upper ends of the vertical shafts. The output end of the second motor passes through the reinforcement plate and remains fixed to one of the vertical shafts, and a traction line is transmitted between the four traction wheels.

[0009] In one embodiment of the present application, side guard plates are fixedly connected to the lower sides of both ends of the longitudinal movement platform, and the two side guard plates respectively slide with two I-beams, and two through holes are opened between the two sides of the longitudinal movement platform, and the traction line is arranged to pass through the two through holes, and one of the through holes is fixed to the traction line.

[0010] In one embodiment of the present application, the wire-releasing assembly includes a vertical groove provided on the working surface of the winding platform, a lifting platform is slidably embedded in the vertical groove, a horizontal axis is rotatably embedded in the middle of the lifting platform, a winding roller is limitedly inserted at one end of the horizontal axis located outside the winding platform, a spring is fixedly connected between the lower side of the lifting platform and the bottom wall of the vertical groove, a pressure sensor for transmitting pressure data to a control terminal is fixedly connected on the bottom wall of the vertical groove and located in the spring, and the detection end of the pressure sensor extends to a position that conflicts with the lifting platform.

[0011] In one embodiment of the present application, the wire-releasing assembly further includes a third motor and a first steering column fixedly connected to the upper working surface of the winding platform, the outer side of the output end of the third motor and the outer side of one end of the horizontal axis located in the winding platform are fixedly connected with pulleys, a transmission belt is connected between the two pulleys, and the third motor can receive speed control instructions issued by the control terminal for output.

[0012] In one embodiment of the present application, the cable arrangement assembly includes a positioning plate and a second steering column fixedly connected to the lower side of the winding platform, a triangular plate is screwed to one side of the bottom of the positioning plate, a plurality of lead holes are provided on the triangular plate, and two assembly grooves are provided at the bottom of the positioning plate.

[0013] In one embodiment of the present application, the wire pay-off assembly also includes a wire clamp fixedly connected to the lower part of the working surface of the winding platform, the upper part of the wire clamp is bent toward the side away from the winding platform, a first fixed pulley is installed at the top end of the wire clamp, and a second fixed pulley is installed at the bottom end of the wire clamp, so that the wire strand led out from the unwinding roller passes through the first steering column, the first fixed pulley, the second fixed pulley and the second steering column in sequence and then passes through the lead hole.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The present invention provides a fully automatic winding machine for preparing a mooring rope, wherein a first slider can slide along an I-beam, and after tightening the fastening bolts, the spacing between the two winding rollers can be adjusted, and the strands of the mooring rope are fixed on the outer wall of one of the winding rollers, and the second motor is started, and the second motor drives the traction wheel to rotate, and the traction wheel drives the traction line to make a circular motion. During this process, the traction line can drive the longitudinal moving platform to change its position, and can pull the strands of the mooring rope to unwind from the unwinding roller. After the strands pass over the winding roller, the first motor is started, and the first motor drives the winding platform to rotate a certain angle, so that the triangle plate is deflected to the other side of the winding roller, and then the winding platform moves in the opposite direction, so that the strands can be continuously wound between the two winding rollers, and the required length of the mooring rope can be customized according to needs;

[0016] (2) The present invention provides a fully automatic winding machine for preparing mooring ropes. The height change of the lifting platform can change the winding height of the wire strands on the winding roller. The longitudinal movement platform drives the winding platform to change its position, which can pull the wire strands of the mooring rope to unwind from the unwinding roller. The wire strands pass through the first steering column, the first fixed pulley, the second fixed pulley and the second steering column in sequence and then pass through the lead hole. Multiple wire strands can be transmitted along a preset path without interfering with each other, and the wire strands can be kept evenly arranged, which not only improves the winding efficiency but also ensures the winding effect.

[0017] (3) The present invention provides a fully automatic winding machine for preparing a mooring rope. When the wire strands are subjected to stress, the wire strands can provide tension for the winding roller, causing the winding roller to move slightly upward. The pressure sensor can transmit the pressure change to the control terminal. The control terminal controls the third motor to rotate according to the pressure change. The third motor drives the pulley to rotate. After being driven by the transmission belt, the winding roller unwinds the wire strands. When the wire strands are released, the winding roller moves downward under the action of gravity. The pressure sensor can transmit the pressure change to the control terminal. The control terminal controls the third motor to slow down or stop the rotation according to the pressure change, thereby ensuring that the wire strands are always kept in a tensioned state, ensuring that the mooring rope is always in a taut state, and ensuring the winding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 A top view of a fully automatic winding machine for preparing mooring ropes according to the present invention;

[0020] Figure 2 A side view of a fully automatic winding machine for preparing mooring ropes according to the present invention;

[0021] Figure 3 The invention provides a fully automatic winding machine for preparing mooring ropes. Figure 1 A magnified view of the structure at A;

[0022] Figure 4 The invention provides a fully automatic winding machine for preparing mooring ropes. Figure 2 A magnified view of the structure at B in FIG.

[0023] Figure 5 A cross-sectional view of a pay-off assembly in a fully automatic winding machine for preparing mooring ropes according to the present invention;

[0024] Figure 6 The invention provides a fully automatic winding machine for preparing mooring ropes. Figure 5 Enlarged view of the structure at position C in the figure.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. I-beam; 2. Reinforcement plate; 3. Longitudinal platform; 31. Side guard plate; 32. Through hole; 4. Winding assembly; 41. First slider; 42. Concave frame; 43. Lifting platform; 44. Assembly column; 45. Winding roller; 46. Fastening bolt; 5. Traction assembly; 51. Vertical axis; 52. Second motor; 53. Traction wheel; 54. Traction line; 6. First motor; 7. Winding platform; 8. Pay-off assembly; 81 , vertical slot; 82, lifting platform; 83, horizontal axis; 84, unwinding roller; 85, spring; 86, pressure sensor; 87, third motor; 88, first steering column; 89, pulley; 810, transmission belt; 811, wire clamp; 812, first fixed pulley; 813, second fixed pulley; 9, wiring assembly; 91, positioning plate; 92, second steering column; 93, triangle plate; 94, lead hole; 95, assembly groove. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the embodiments.

[0028] See also Figure 1-6The present invention provides a fully automatic winding machine for preparing a mooring rope, comprising an I-beam 1, wherein a reinforcing plate 2 is fixedly connected between two adjacent ends of the I-beam 1, a longitudinal movement platform 3 is connected between the two I-beams 1, and side guard plates 31 are fixedly connected to the lower sides of both ends of the longitudinal movement platform 3, and the two side guard plates 31 are respectively kept sliding with the two I-beams 1, and two through holes 32 are opened between the two sides of the longitudinal movement platform 3, and the traction line 54 is arranged through the two through holes 32, and one of the through holes 32 is kept fixed with the traction line 54;

[0029] Specifically, the sliding contact between the side guard plate 31 and the I-beam 1 provides a smooth moving path to ensure that the longitudinal movement platform 3 does not deviate from the path. When the traction line 54 moves in a circular motion, it can drive the longitudinal movement platform 3 to keep sliding along the I-beam 1.

[0030] Further, the two I-beams 1 are arranged parallel to each other, and two winding assemblies 4 are connected between the two I-beams 1. The winding assembly 4 includes a first slider 41 slidably connected to the lower half of the I-beam 1 and a concave frame 42 fixedly connected between the two first sliders 41. A lifting platform 43 is fixedly connected to the upper middle side of the concave frame 42, and an assembly column 44 is fixed to the upper side of the lifting platform 43. A winding roller 45 is inserted into the outer limit position of the assembly column 44, and a fastening bolt 46 is threadedly connected to the side of the first slider 41 away from the I-beam 1.

[0031] Specifically, the height change of the lifting platform 43 can change the winding height of the wire strand on the winding roller 45. Since the first slider 41 can slide along the I-beam 1, after tightening the fastening bolt 46, the distance between the two winding rollers 45 is adjustable, and the required length of the mooring rope can be customized according to needs. It is worth mentioning that a positioning hole is opened on the side of the I-beam 1 away from each other. By tightening the bolt 46, the bolt 46 can be embedded in the positioning hole, which can fully limit the position of the winding assembly 4.

[0032] Furthermore, a traction assembly 5 is connected between the two reinforcing plates 2 to drive the longitudinal moving platform 3 to move linearly along the I-beam 1. The traction assembly 5 includes vertical shafts 51 rotatably embedded at both ends of the reinforcing plates 2 and a second motor 52 fixed to the lower side of one of the reinforcing plates 2. A traction wheel 53 is fixed to the upper end of each of the vertical shafts 51. The output end of the second motor 52 passes through the reinforcing plate 2 and remains fixed to one of the vertical shafts 51. A traction line 54 is transmitted between the four traction wheels 53.

[0033] Specifically, the second motor 52 is started, and the second motor 52 drives the traction wheel 53 to rotate, and the traction wheel 53 drives the traction line 54 to make a circular motion. It is worth noting that by controlling the switching time of the forward and reverse rotation of the second motor 52, the moving length of the longitudinal movement platform 3 can be controlled, so as to adapt to cables of different lengths.

[0034] Furthermore, a first motor 6 is fixedly connected to the upper side of the longitudinal moving platform 3, and an output end of the first motor 6 passes through the longitudinal moving platform 3 and is fixedly connected to a winding platform 7 having a working surface;

[0035] Specifically, the first motor 6 can drive the winding platform 7 to rotate. After the wire strand passes over the winding roller 45, the first motor 6 is started. The first motor 6 drives the winding platform 7 to rotate a certain angle, so that the triangular plate 93 is deflected to the other side of the winding roller 45. On the other hand, when replacing the unwinding roller 84, the working surface with the unwinding roller 84 to be replaced can be rotated to the working position, which is convenient for workers to operate.

[0036] Furthermore, a wire-releasing assembly 8 is installed on different working surfaces of the winding platform 7, and the wire-releasing assembly 8 includes a vertical groove 81 opened on the working surface of the winding platform 7, a lifting platform 82 is slidably embedded in the vertical groove 81, a horizontal axis 83 is rotatably embedded in the middle of the lifting platform 82, and a winding roller 84 is inserted at one end of the horizontal axis 83 located outside the winding platform 7, and a spring 85 is fixedly connected between the lower side of the lifting platform 82 and the bottom wall of the vertical groove 81, and a pressure sensor 86 for transmitting pressure data to the control terminal is fixedly connected on the bottom wall of the vertical groove 81 and located in the spring 85, and the detection end of the pressure sensor 86 extends to a position that conflicts with the lifting platform 82;

[0037] Specifically, the unwinding roller 84 can rotate synchronously with the horizontal axis 83, and the counter-connection method can facilitate the disassembly, assembly and replacement of the unwinding roller 84. It is worth mentioning that when the wire strand is subjected to force, the wire strand can provide pulling force for the winding roller 45, so that the winding roller 45 moves slightly upward, and the pressure sensor 86 can transmit the pressure change to the control terminal. The control terminal controls the output of the third motor 87 according to the pressure change. By increasing the rotation speed of the winding roller 45, it can be ensured that the wire strand will not break. Conversely, when the force on the wire strand is lower than the preset value, by reducing the rotation speed of the winding roller 45, it can be ensured that the wire strand always remains in a tensioned state.

[0038] Furthermore, the wire-releasing assembly 8 further includes a third motor 87 and a first steering column 88 fixedly connected to the upper working surface of the winding platform 7, the outer side of the output end of the third motor 87 and the outer side of one end of the horizontal axis 83 located in the winding platform 7 are fixedly connected with a pulley 89, a transmission belt 810 is connected between the two pulleys 89, and the third motor 87 can receive a speed control command issued by the control terminal for output;

[0039] Specifically, the third motor 87 drives the pulley 89 to rotate, and after being transmitted by the transmission belt 810, the winding roller 45 unwinds the wire strand. It is worth noting that convex racks are evenly arranged on the outer side of the pulley 89, and convex tooth grooves corresponding to the convex racks are opened on the inner diameter of the transmission belt 810. The convex racks and the convex tooth grooves are adapted to bite each other, which can prevent the transmission belt 810 from slipping during the transmission process.

[0040] Furthermore, the unwinding assembly 8 also includes a wire clamp 811 fixedly connected to the lower part of the working surface of the winding platform 7, the upper part of the wire clamp 811 is bent to a side away from the winding platform 7, the top of the wire clamp 811 is installed with a first fixed pulley 812, and the bottom of the wire clamp 811 is installed with a second fixed pulley 813, so that the wire strands led out from the unwinding roller 84 pass through the first steering column 88, the first fixed pulley 812, the second fixed pulley 813 and the second steering column 92 in sequence and then pass through the lead hole 94;

[0041] Specifically, the wire clamp 811 is located directly below the first steering column 88, so that the wire strands bypassing the first steering column 88 can pass through the first fixed pulley 812 in sequence, which can reduce friction and accurately control the direction of the wire strands, and ensure that the wire strands can be transmitted along a predetermined path.

[0042] Furthermore, a wire arrangement assembly 9 is installed on the lower side of the winding platform 7, so that the wire strands led out from the pay-off assembly 8 are synchronously wound between the two winding assemblies 4 after passing through the wire arrangement assembly 9. The wire arrangement assembly 9 includes a positioning plate 91 and a second steering column 92 fixedly connected to the lower side of the winding platform 7. A triangular plate 93 is screwed to one side of the bottom of the positioning plate 91. The triangular plate 93 is provided with a plurality of lead-in holes 94, and two assembly grooves 95 are provided at the bottom of the positioning plate 91.

[0043] Specifically, the second steering column 92 serves to guide the wire strands that are inconvenient to pass directly through the lead holes 94, so that the wire strands can all pass through the lead holes 94 from the same side. The lead holes 94 are not only equidistantly arranged in the horizontal direction, but also equidistantly arranged in the vertical direction, so that the wires can be evenly arranged.

[0044] Working principle: when in use, fix the strands of the mooring rope on the outer wall of one of the winding rollers 45, start the second motor 52, the second motor 52 drives the traction wheel 53 to rotate, and the traction wheel 53 drives the traction line 54 to make a circular motion. In this process, the traction line 54 can drive the longitudinal movement platform 3 to change its position, and can pull the strands of the mooring rope to unwind from the unwinding roller 84. The strands pass through the first steering column 88, the first fixed pulley 812, the second fixed pulley 813 and the second steering column 92 in turn, and then pass through the lead hole 94. Multiple strands of wire can be transmitted according to the preset path without interfering with each other, and the wire strands can be kept evenly arranged, which not only improves the winding efficiency but also ensures the winding effect. After the wire strand passes over the winding roller 45, the first motor 6 is started, and the first motor 6 drives the winding platform 7 to rotate a certain angle, so that the triangle plate 93 deflects to the other side of the winding roller 45. After that, the winding platform 7 moves in the opposite direction, so as to continuously wind the wire strands between the two winding rollers 45. It is worth noting that the lifting platform 43 The height change can change the winding height of the wire strand on the winding roller 45. Since the first slider 41 can slide along the I-beam 1, after tightening the fastening bolt 46, the distance between the two winding rollers 45 is adjustable, and the required length of the mooring rope can be customized according to needs. On the other hand, when the wire strand is subjected to force, the wire strand can provide tension for the winding roller 45, so that the winding roller 45 moves up slightly. The pressure sensor 86 can transmit the pressure change to the control terminal, and the control terminal controls the output of the third motor 87 according to the pressure change. The third motor 87 drives the pulley 89 to rotate. After the transmission belt 810 is driven, the winding roller 45 unwinds the wire strand. When the wire strand is released, the winding roller 45 drives the lifting platform 82 downward under the action of gravity. The pressure sensor 86 can transmit the pressure change to the control terminal, and the control terminal controls the third motor 87 to slow down or stop according to the pressure change, which can ensure that the wire strand is always in a tensioned state and the mooring rope is always in a taut state.

Claims

1. A fully automatic winding machine for preparing mooring ropes, comprising an I-beam (1), wherein two I-beams (1) are arranged parallel to each other, and a reinforcing plate (2) is fixedly connected between two adjacent ends of the I-beam (1), characterized in that: A longitudinal moving platform (3) and two winding assemblies (4) are connected between the two I-beams (1); a traction assembly (5) for driving the longitudinal moving platform (3) to move linearly along the I-beam (1) is connected between the two reinforcing plates (2); a first motor (6) is fixedly connected to the upper side of the longitudinal moving platform (3); an output end of the first motor (6) passes through the longitudinal moving platform (3) and is fixedly connected to a winding platform (7) having a working surface; wire-releasing assemblies (8) are installed on different working surfaces of the winding platform (7), and a wire-arranging assembly (9) is installed on the lower side of the winding platform (7), so that the wire strands drawn out from the wire-releasing assembly (8) are synchronously wound between the two winding assemblies (4) after passing through the wire-arranging assembly (9).

2. A fully automatic winding machine for preparing mooring ropes according to claim 1, characterized in that: The winding assembly (4) comprises a first slider (41) slidably connected to the lower half of the I-beam (1) and a concave frame (42) fixedly connected between the two first sliders (41); a lifting platform (43) is fixedly connected to the middle upper side of the concave frame (42); an assembly column (44) is fixedly connected to the upper side of the lifting platform (43); a winding roller (45) is inserted into the outer limit position of the assembly column (44); and a fastening bolt (46) is threadedly connected to the side of the first slider (41) away from the I-beam (1).

3. A fully automatic winding machine for preparing mooring ropes according to claim 1, characterized in that: The traction assembly (5) comprises a vertical shaft (51) rotatably embedded at both ends of the reinforcing plate (2) and a second motor (52) fixed to the lower side of one of the reinforcing plates (2); a traction wheel (53) is fixed to the upper end of each of the vertical shafts (51); an output end of the second motor (52) passes through the reinforcing plate (2) and is fixed to one of the vertical shafts (51); and a traction line (54) is transmitted between the four traction wheels (53).

4. A fully automatic winding machine for preparing mooring ropes according to claim 3, characterized in that: The lower sides of both ends of the longitudinal moving platform (3) are fixedly connected with side guard plates (31), and the two side guard plates (31) are respectively kept in sliding relationship with the two I-beams (1), and two through holes (32) are provided between the two sides of the longitudinal moving platform (3), and the traction line (54) is arranged to pass through the two through holes (32), and one of the through holes (32) is kept fixed to the traction line (54).

5. A fully automatic winding machine for preparing mooring ropes according to claim 1, characterized in that: The unwinding assembly (8) comprises a vertical groove (81) provided on the working surface of the winding platform (7), a lifting platform (82) being slidably embedded in the vertical groove (81), a horizontal axis (83) being rotatably embedded in the middle of the lifting platform (82), a reeling roller (84) being inserted in a limited position at one end of the horizontal axis (83) located outside the winding platform (7), a spring (85) being fixedly connected between the lower side of the lifting platform (82) and the bottom wall of the vertical groove (81), a pressure sensor (86) for transmitting pressure data to a control terminal being fixedly connected on the bottom wall of the vertical groove (81) and located in the spring (85), and a detection end of the pressure sensor (86) extending to a position where it contacts the lifting platform (82).

6. A fully automatic winding machine for preparing mooring ropes according to claim 5, characterized in that: The wire-releasing assembly (8) further comprises a third motor (87) and a first steering column (88) fixedly connected to the upper working surface of the winding platform (7); a pulley (89) is fixedly connected to the outer side of the output end of the third motor (87) and the outer side of one end of the transverse axis (83) located inside the winding platform (7); a transmission belt (810) is connected between the two pulleys (89); and the third motor (87) is capable of receiving a speed control command issued by a control terminal for output.

7. A fully automatic winding machine for preparing mooring ropes according to claim 6, characterized in that: The cable arrangement assembly (9) comprises a positioning plate (91) and a second steering column (92) fixedly connected to the lower side of the winding platform (7); a triangular plate (93) is screwed to one side of the bottom of the positioning plate (91); a plurality of lead holes (94) are provided on the triangular plate (93); and two assembly grooves (95) are provided at the bottom of the positioning plate (91).

8. A fully automatic winding machine for preparing mooring ropes according to claim 7, characterized in that: The unwinding assembly (8) further comprises a wire clamp (811) fixedly connected to the lower part of the working surface of the winding platform (7), the upper part of the wire clamp (811) is bent toward a side away from the winding platform (7), the top end of the wire clamp (811) is provided with a first fixed pulley (812), and the bottom end of the wire clamp (811) is provided with a second fixed pulley (813), so that the wire strands led out from the unwinding roller (84) pass through the first steering column (88), the first fixed pulley (812), the second fixed pulley (813) and the second steering column (92) in sequence and then pass through the lead hole (94).

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