AS method steel wire rewinding unit system and method

Abstract

The invention belongs to the technical field of suspension bridge AS-method main cable erection, and particularly relates to an AS-method steel wire rewinding unit system and method. A steel wire rewinding unit system adopting an AS method comprises a wire unwinding disc, a wire supporting wheel, a wire pressing machine, a front force measuring device, a tensioning machine, a rear force and speed measuring device, a wire winding machine and an I-shaped wheel which are arranged along the same axis. The steel wire sequentially penetrates through the wire supporting wheel, the wire pressing machine, the front force measuring device, the tensioning machine, the rear force and speed measuring device and the take-up machine and then is wound on the spool again. According to the steel wire rewinding device, steel wires can be rewound on site, the number of spools is reduced, and the equipment production cost is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of AS method main cable erection of suspension bridges, and in particular relates to an AS method steel wire return unit system and method. Background Art

[0002] There are two methods for erecting the main cable of a suspension bridge: the PPWS method and the AS method. In the PPWS method, the main cable strands are erected in the factory. When erecting the main cable, only the strands need to be erected. In the AS method, the main cable of a suspension bridge is erected by spinning steel wires one by one to form strands, which are then integrated into the main cable. During the AS method, the I-shaped wheel needs to be fully wrapped with steel wires for laying out the wires so that the spinning wheel can pull the steel wires for spinning. If the I-shaped wheels with steel wire stored are directly transported from the steel wire manufacturer, the cost will increase due to the increase in the number of I-shaped wheels. For example, each I-shaped wheel weighs 2.5t and can only wind 6t of steel wire, of which the I-shaped wheels account for 30%. In other words, if a car can transport 100t of steel wire, only one car is needed to transport 100t of steel wire; now the steel wire is wound on the I-shaped wheel, and the car can only transport 70t of steel wire. To transport 100t of steel wire, two transportations are required, which increases the number of vehicle transportations and increases the transportation cost. At the same time, the number of I-shaped wheels is increased, which increases the production cost. For example, if the rewinding unit is used for winding, only 30 I-shaped wheels are needed for turnover on site; more than 16 I-shaped wheels are used on site every day. Considering the transportation time of the I-shaped wheels with full steel wire, the factory directly winds the steel wire on the I-shaped wheel for transportation, and the need for I-shaped wheels will be much greater than 30, which also increases the number of I-shaped wheels. Therefore, the most economical and effective way is to transport the steel wire coils to the project site. At present, there is no relevant system that can perform a fallback mechanism on site. Summary of the invention

[0003] In view of the above problems, the object of the present invention is to provide an AS method steel wire rewinding unit system and method, which can rewind the steel wire on site, reduce the number of I-shaped pulleys, and save equipment production costs.

[0004] The technical solution of the present invention is: an AS method steel wire rewinding unit system, comprising a wire-releasing disc, a wire-supporting wheel, a wire pressing machine, a front force measuring device, a tensioning machine, a rear force measuring and speed measuring device, a wire-reeling machine and an I-shaped wheel arranged along the same axis, wherein the wire-releasing disc is wound with steel wire, and the steel wire passes through the wire-supporting wheel, the wire pressing machine, the front force measuring device, the tensioning machine, the rear force measuring and speed measuring device, and the wire-reeling machine in sequence and is then rewound on the I-shaped wheel.

[0005] The wire payoff drum includes a payoff drum, tiles and a brake. The payoff drum is a cylindrical frame structure with tiles arranged on the outside. The steel wire is wound around the outside of the tiles. The wire payoff drum is provided with a crimping machine at the wire connection point. The crimping machine includes a hydraulic cylinder, a crimping die and a seat. The interface of the steel wire is connected at the crimping die through the hydraulic cylinder.

[0006] The wire-supporting wheel comprises a support seat, and a plurality of vertical rollers and transverse rollers are arranged on the upper part of the support seat. The vertical rollers and transverse rollers are vertically arranged, and the steel wire passes through the gaps between the vertical rollers and the transverse rollers.

[0007] The front force measuring device and the rear force and speed measuring device have the same structure, and include three transmission wheels arranged at equal intervals. A force measuring mandrel is provided in the middle of the transmission wheels, and the steel wire passes through the three transmission wheels in a concave shape.

[0008] The tensioner comprises a wire winding disc and a brake. A wire inlet is arranged on one side of the wire winding disc, and a wire outlet is arranged on the other side of the wire winding disc.

[0009] The wire take-up machine comprises a wire take-up machine frame, a wire arranger and a wire arranger driving motor, wherein the wire arranger is an optical axis wire arranger, the wire arranger driving motor is a variable frequency motor, an I-shaped wheel is arranged above the wire take-up machine frame, the I-shaped wheel comprises an I-shaped wheel disc, and the I-shaped wheel driving motor is arranged on the I-shaped wheel disc.

[0010] A method for AS wire rewinding, using the AS wire rewinding unit system as described above, comprises the following steps: S1: wire unwinding disc, wire supporting wheel, wire pressing machine, front force measuring device, tensioning machine, rear force and speed measuring device, wire take-up machine and I-shaped wheel arranged along the same axis; S2: The wire coil is placed on the wire unwinding drum by means of a lifting device, and the wire winding head is pulled. The wire passes through the wire supporting wheel, the wire pressing machine, the front force measuring device, the tensioning machine, the rear force and speed measuring device, and the wire taking-up machine in sequence and is then fixed on the I-shaped wheel; S3: Adjust the wire-releasing tension of the wire-releasing disc and the tensioner, and determine whether the tension of the wire-releasing disc and the tensioner meets the design requirements according to the front force measuring device and the rear force and speed measuring device; S4: Start the spool and rewind the steel wire from the wire reel on the spool to complete the wire rewinding.

[0011] In step S2, the steel wire is wound around the tensioner for at least two turns.

[0012] The technical effects of the present invention are: 1. The tension of the pay-off reel and the tensioner of the present invention is detected by a force measuring device to realize automatic tension adjustment, ensuring that the wire tension is always within the set tension range during the rewinding process of the wire roll; 2. A wire arranger is arranged at the front end of the wire take-up machine of the present invention, which can ensure that the steel wires on the I-spool are neatly arranged; the wire arranger adopts a variable frequency motor, which can meet the wire arranging requirements of various steel wire diameters; 3. The present invention rewinds the steel wire on site, reduces the number of I-spools, and saves equipment production costs; the steel wire manufacturer only transports the steel wire rolls separately, which improves the transportation efficiency, and can adjust the number of steel wire rolls and transportation equipment according to the transportation road conditions and other conditions, greatly reducing the transportation cost; 4. The present invention rewinds the steel wire on site to ensure the demand for wire release.

[0013] The following is a further description with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a schematic structural diagram of an AS method steel wire rewinding unit system according to an embodiment of the present invention.

[0015] Figure 2 It is a three-dimensional schematic diagram of a pay-off reel according to an embodiment of the present invention.

[0016] Figure 3 It is a three-dimensional schematic diagram of the thread support wheel according to an embodiment of the present invention.

[0017] Figure 4 It is a three-dimensional schematic diagram of the front force measuring device according to an embodiment of the present invention.

[0018] Figure 5 It is a three-dimensional schematic diagram of a tensioner according to an embodiment of the present invention.

[0019] Figure 6 It is a three-dimensional schematic diagram of a wire take-up machine and an I-shaped wheel according to an embodiment of the present invention.

[0020] Figure 7 It is a three-dimensional schematic diagram of a crimping machine according to an embodiment of the present invention.

[0021] Figure 8 The figure is a working flow chart of the steel wire rewinding of the AS method according to the embodiment of the present invention.

[0022] Fig. 9 The figure is a control flow chart of steel wire rewinding in the AS method according to an embodiment of the present invention.

[0023] Figure markings: 1-wire pay-off disc, 2-wire supporting wheel, 3-wire pressing machine, 4-front force measuring device, 5-tensioning machine, 6-rear force and speed measuring device, 7-wire taking-up machine, 8-I-shaped wheel, 9-steel wire, 11-wire pay-off disc, 12-tile, 13-brake, 14-hydraulic cylinder, 15-crimping die, 16-seat body, 21-vertical roller, 22-transverse roller, 23-support seat, 41-force measuring mandrel, 42-transmission wheel, 51-wire inlet, 52-wire winding disc, 53-brake, 54-wire outlet, 71-wire arranging device, 72-wire arranging device driving motor, 73-wire taking-up frame, 81-I-shaped wheel disc, 82-I-shaped wheel driving motor. DETAILED DESCRIPTION Example 1

[0024] like Figure 1 to Figure 7 As shown, an AS method steel wire rewinding unit system comprises a wire unwinding disc 1, a wire supporting wheel 2, a wire pressing machine 3, a front force measuring device 4, a tensioning machine 5, a rear force and speed measuring device 6, a wire taking-up machine 7 and an I-shaped wheel 8 arranged along the same axis, wherein a steel wire 9 is wound on the wire unwinding disc 1, and the steel wire 9 passes through the wire supporting wheel 2, the wire pressing machine 3, the front force measuring device 4, the tensioning machine 5, the rear force and speed measuring device 6, and the wire taking-up machine 7 in sequence and then is rewound on the I-shaped wheel 8.

[0025] During actual use, the present invention comprises a wire unwinding disc 1, a wire supporting wheel 2, a wire pressing machine 3, a front force measuring device 4, a tensioning machine 5, a rear force and speed measuring device 6, a wire take-up machine 7 and an I-wheel 8 arranged along the same axis; a wire roll is placed on the wire unwinding disc 1 by means of a lifting device, and the wire winding head is pulled, and the steel wire 9 passes through the wire supporting wheel 2, the wire pressing machine 3, the front force measuring device 4, the tensioning machine 5, the rear force and speed measuring device 6, and the wire take-up machine 7 in sequence and is then fixed on the I-wheel 8; the wire unwinding tension of the wire unwinding disc 1 and the tensioning machine 5 is adjusted, and according to the front force measuring device 4 and the rear force and speed measuring device 6, it is determined whether the tension of the wire unwinding disc 1 and the tensioning machine 5 meets the design requirements; the I-wheel 8 is started, and the steel wire 9 of the wire unwinding disc 1 is rewound around the I-wheel 8 to complete the wire rewinding. The tension of the pay-off reel and the tensioner of the present invention is detected by a force measuring device to realize automatic tension adjustment, ensuring that the wire tension is always within the set tension range during the rewinding process of the wire coil; a wire arranger is arranged at the front end of the wire take-up machine of the present invention, which can ensure that the wires on the I-spool are neatly arranged; the wires are rewound on site, which reduces the number of I-spools and saves equipment production costs; the wire manufacturer only transports the wire coils separately, which improves transportation efficiency, and can adjust the number of transported wire coils and transportation equipment according to transportation road conditions and other conditions, greatly reducing transportation costs; the on-site rewinding of the wire of the present invention can ensure the demand for wire release. Example 2

[0026] Preferably, on the basis of Example 1, in this embodiment, the wire pay-off disk 1 includes a wire pay-off disk 11, a tile 12 and a brake 13, the wire pay-off disk 11 is a cylindrical frame structure, and a tile 12 is provided on the outside thereof, the steel wire 9 is wound around the outside of the tile 12, and the wire pay-off disk 1 is provided with a crimping machine at the connection point of the steel wire 9, the crimping machine includes a hydraulic cylinder 14, a crimping die 15 and a seat 16, and the interface of the steel wire 9 is connected at the crimping die 15 through the hydraulic cylinder 14.

[0027] During actual use, in the present invention, the wire release disc 1 is provided with a crimping machine at the connection point of the steel wire 9, and the crimping machine includes a hydraulic cylinder 14, a crimping die 15 and a seat 16. The interface of the steel wire 9 is connected at the crimping die 15 through the hydraulic cylinder 14, so that the connection of multiple wire rolls can be realized. Example 3

[0028] Preferably, on the basis of Example 1 or Example 2, in this embodiment, the wire wheel 2 includes a support seat 23, and a plurality of vertical rollers 21 and transverse rollers 22 are provided on the upper part of the support seat 23. The vertical rollers 21 and transverse rollers 22 are vertically arranged, and the steel wire 9 passes through the gap between the vertical rollers 21 and the transverse rollers 22.

[0029] In actual use, the wire support wheel 2 of the present invention includes a support seat 23, and a plurality of vertical rollers 21 and horizontal rollers 22 are arranged on the upper part of the support seat 23. The vertical rollers 21 and horizontal rollers 22 are arranged vertically, and the steel wire 9 passes through the gap between the vertical rollers 21 and horizontal rollers 22. Since the steel wire roll has thickness, the steel wire outlet position changes when the wire pay-off reel pays off the wire. A wire support wheel is arranged between the front force measuring device and the pay-off reel to ensure the force measurement accuracy of the front force measuring device, and the height of the support seat is adjusted according to the actual situation. Example 4

[0030] Preferably, on the basis of Example 1 or Example 3, in this embodiment, the front force measuring device 4 and the rear force and speed measuring device 6 have the same structure, including three equally spaced transmission wheels 42, a force measuring core shaft 41 is provided in the middle of the transmission wheel 42, and the steel wire 9 passes through the three transmission wheels 42 in a concave shape.

[0031] During actual use, the front force measuring device 4 and the rear force and speed measuring device 6 of the present invention have the same structure, including three equally spaced transmission wheels 42, a force measuring core shaft 41 is provided in the middle of the transmission wheel 42, and the steel wire 9 passes through the three transmission wheels 42 in a concave shape. A three-wheel mechanism is used for force measurement, and the middle pressure wheel uses a force measuring core shaft structure for force measurement. Example 5

[0032] Preferably, on the basis of Example 1 or Example 4, in this embodiment, the tensioner 5 includes a wire winding disk 52 and a brake 53, and the wire winding disk 52 is provided with a wire inlet 51 on one side and a wire outlet 54 on the other side.

[0033] In actual use, the tensioner 5 of the present invention includes a wire winding disc 52 and a brake 53. The wire winding disc 52 is provided with a wire inlet 51 on one side and a wire outlet 54 on the other side. The steel wire enters the tensioner through the wire inlet, is wound around the wire winding disc for n turns, and then comes out from the wire outlet. The tensioner uses two methods to increase the force of the steel wire. One method is to wind n turns around the wire winding disc. According to the Euler formula, the steel wire is increased in force once. In addition, a brake is provided to increase the force of the steel wire twice. Example 6

[0034] Preferably, on the basis of Example 1 or Example 5, in this embodiment, the wire take-up machine 7 includes a wire take-up machine frame 73, a wire arranger 71 and a wire arranger drive motor 72, the wire arranger 71 is an optical axis wire arranger, the wire arranger drive motor 72 is a variable frequency motor, and an I-shaped wheel 8 is arranged above the wire take-up machine frame 73, the I-shaped wheel 8 includes an I-shaped wheel disc 81, and the I-shaped wheel disc 81 is provided with an I-shaped wheel drive motor 82.

[0035] In actual use, the wire take-up machine 7 of the present invention includes a wire take-up frame 73, a wire arranger 71 and a wire arranger driving motor 72, wherein the wire arranger 71 is an optical axis wire arranger, and the wire arranger driving motor 72 is a variable frequency motor. An I-shaped wheel 8 is arranged above the wire take-up frame 73, and the I-shaped wheel 8 includes an I-shaped wheel disc 81, and an I-shaped wheel driving motor 82 is arranged on the I-shaped wheel disc 81. The wire arranger is arranged at the front end of the wire take-up machine of the present invention, which can ensure that the steel wires on the I-shaped wheel are neatly arranged; the wire arranger adopts a variable frequency motor, which can meet the wire arrangement requirements of various steel wire diameters. Example 7

[0036] like Figure 8 , Fig. 9 As shown, a method for AS wire rewinding, using an AS wire rewinding unit system as described above, comprises the following steps: S1: wire unwinding disc 1, wire supporting wheel 2, wire pressing machine 3, front force measuring device 4, tensioning machine 5, rear force and speed measuring device 6, wire take-up machine 7 and I-shaped wheel 8 arranged along the same axis; S2: The wire coil is placed on the wire unwinding drum 1 by means of a lifting device, and the wire coil head is pulled. The wire 9 passes through the wire supporting wheel 2, the wire pressing machine 3, the front force measuring device 4, the tensioning machine 5, the rear force and speed measuring device 6, and the wire taking-up machine 7 in sequence and is then fixed on the I-shaped wheel 8; S3: Adjust the wire-releasing tension of the wire-releasing disc 1 and the tensioner 5, and determine whether the tension of the wire-releasing disc 1 and the tensioner 5 meets the design requirements according to the front force measuring device 4 and the rear force and speed measuring device 6; S4: Start the spool 8, rewind the steel wire 9 of the wire reel 1 on the spool 8, and complete the steel wire rewinding.

[0037] In step S2, the steel wire 9 is wound around the tensioner 5 for at least two turns.

[0038] In the step S3, the wire release tension of the wire release disc 1 and the tensioner 5 is adjusted, and whether the tension of the wire release disc 1 and the tensioner 5 meets the design requirements is determined according to the front force measuring device 4 and the rear force and speed measuring device 6. The specific process is as follows: S31: A sensor is provided on the wire release disc 1 to detect whether there is a steel wire on the wire release disc 1. If no steel wire is detected, the wire release disc is in a locked state and cannot rotate; S32: The front force measuring device 4 transmits the detected wire release tension signal of the wire release disc 1 to the control mechanism, and the control mechanism compares whether the wire tension meets the set tension requirement. If the wire release tension of the wire release disc 1 exceeds the set tension value range, the control mechanism will give a signal to the wire release disc 1 to adjust the wire release tension of the wire release disc 1 so that the wire release tension of the wire release disc 1 meets the set requirement. S33: The rear force and speed measuring device 6 will transmit the detected wire-releasing tension signal of the tensioner 5 to the control mechanism. The control mechanism will compare whether the tension of the steel wire 9 meets the set tension requirement. If the steel wire tension of the tensioner 5 exceeds the set tension value range, the control mechanism will give the tensioner a signal to adjust the wire-releasing tension of the tensioner so that the wire-releasing tension of the tensioner meets the set requirement.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An AS method steel wire rewinding unit system, characterized by: The invention comprises a wire-releasing disc (1), a wire-supporting wheel (2), a wire pressing machine (3), a front force measuring device (4), a tensioning machine (5), a rear force measuring and speed measuring device (6), a wire-receiving machine (7) and an I-shaped wheel (8) arranged along the same axis. A steel wire (9) is wound around the wire-releasing disc (1). The steel wire (9) passes through the wire-supporting wheel (2), the wire pressing machine (3), the front force measuring device (4), the tensioning machine (5), the rear force measuring and speed measuring device (6) and the wire-receiving machine (7) in sequence and is then rewound around the I-shaped wheel (8).

2. According to claim 1, an AS wire rewinding unit system is characterized in that: The wire unwinding disc (1) comprises a wire unwinding disc (11), a tile (12) and a brake (13); the wire unwinding disc (11) is a cylindrical frame structure, and a tile (12) is arranged outside the wire unwinding disc; the steel wire (9) is wound around the outside of the tile (12); the wire unwinding disc (1) is provided with a crimping machine at the connection point of the steel wire (9); the crimping machine comprises a hydraulic cylinder (14), a crimping die (15) and a seat (16); the interface of the steel wire (9) is connected at the crimping die (15) via the hydraulic cylinder (14).

3. According to claim 1, an AS wire rewinding unit system is characterized in that: The wire wheel (2) comprises a support seat (23), a plurality of vertical rollers (21) and transverse rollers (22) are provided on the upper part of the support seat (23), the vertical rollers (21) and transverse rollers (22) are arranged vertically, and the steel wire (9) passes through the gaps between the vertical rollers (21) and transverse rollers (22).

4. According to claim 1, an AS wire rewinding unit system is characterized in that: The front force measuring device (4) and the rear force measuring and speed measuring device (6) have the same structure, comprising three transmission wheels (42) arranged at equal intervals, a force measuring mandrel (41) being provided in the middle of the transmission wheels (42), and the steel wire (9) passing through the three transmission wheels (42) in a concave shape.

5. According to claim 1, an AS wire rewinding unit system is characterized in that: The tensioner (5) comprises a wire winding disc (52) and a brake (53); one side of the wire winding disc (52) is provided with a wire inlet (51), and the other side of the wire winding disc (52) is provided with a wire outlet (54).

6. According to claim 1, an AS wire rewinding unit system is characterized by: The wire take-up machine (7) comprises a wire take-up machine frame (73), a wire arranger (71) and a wire arranger drive motor (72); the wire arranger (71) is an optical axis wire arranger; the wire arranger drive motor (72) is a variable frequency motor; an I-shaped wheel (8) is arranged above the wire take-up machine frame (73); the I-shaped wheel (8) comprises an I-shaped wheel disc (81); and an I-shaped wheel drive motor (82) is arranged on the I-shaped wheel disc (81).

7. A method for AS wire rewinding, using the AS wire rewinding unit system as claimed in claim 1, characterized in that: The following steps are involved: S1: a wire unwinding disc (1), a wire supporting wheel (2), a wire pressing machine (3), a front force measuring device (4), a tensioning machine (5), a rear force and speed measuring device (6), a wire taking-up machine (7) and an I-shaped wheel (8) arranged along the same axis; S2: The wire coil is placed on the wire unwinding drum (1) by means of a lifting device, and the wire coil head is pulled, and the steel wire (9) passes through the wire supporting wheel (2), the wire pressing machine (3), the front force measuring device (4), the tensioning machine (5), the rear force and speed measuring device (6), and the wire taking-up machine (7) in sequence, and is then fixed on the I-shaped wheel (8); S3: adjusting the wire-releasing tension of the wire-releasing disc (1) and the tensioning machine (5), and determining whether the tension of the wire-releasing disc (1) and the tensioning machine (5) meets the design requirements according to the front force measuring device (4) and the rear force and speed measuring device (6); S4: Start the spool (8) to rewind the steel wire (9) on the wire reel (1) around the spool (8) to complete the rewinding of the steel wire.

8. The method for AS wire rewinding according to claim 7, characterized in that: In the step S2, the steel wire (9) is wound around the tensioner (5) for at least two turns.

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