Working method of an electric wrapping tape device for a main cable of a bridge

Abstract

The invention discloses a working method of an electric wrapping tape device for a bridge main cable. It includes the following steps: first, assemble the electric wrapping tape device for the bridge main cable on the main cable in sequence; then make the feeding mechanism perform a rotational motion to wind the wrapping tape around the storage cylinder; then separate the storage cylinder from the inner guide rail and connect it to the outer guide rail; then make the wrapping tape on the storage cylinder perform a compound motion of rotation and linear motion through the guiding device, so as to be spirally wound around the main cable, and the pressing device follows the guiding device to press the wrapping tape again; after a single winding is completed, make the wrapping tape firmly adhere. The advantages are: not only can the wrapping tape be conveniently and quickly automatically wound around the main cable, but also the repeated installation and disassembly time of the automatic wrapping tape device is reduced, thus greatly improving the winding efficiency, saving manpower and effectively reducing the safety hazards brought by the high-altitude operation of workers. In particular, the wrapping effect is also improved.

Description

Technical Field

[0001] The present invention relates to a working method of an electric wrapping tape device for a main cable of a bridge, belonging to the technical field of wrapping of the main cable of a bridge. Background Art

[0002] The main cable is one of the main load-bearing structural systems of a suspension bridge, which bears the stress of the entire bridge structure. The external environment of the main cable is complex, often accompanied by external harsh environments such as humidity and strong winds. As the service time increases, the outside of the main cable will be subject to electrochemical corrosion, resulting in safety problems. Therefore, wrapping the surface of the main cable has an important impact on protecting its internal structure, extending the life of the main cable, ensuring the safety of the bridge, and reducing the engineering maintenance cost.

[0003] At present, the work of the main cable wrapping tape is mainly completed by workers using a manual wrapping tape machine, which requires long-term operation at high altitude. During the operation process, it is necessary to move frequently and change the tape many times. The tape wrapping efficiency is low, and there are relatively large safety hazards. Therefore, how to realize automatic wrapping operation has become one of the important means to improve its work efficiency and reduce safety hazards. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a working method of an electric wrapping tape device for a main cable of a bridge that can effectively improve the tape wrapping efficiency and reduce safety hazards.

[0005] To solve the above technical problem, the working method of the electric wrapping tape device for the main cable of the present invention includes the following steps:

[0006] S1: Assemble in sequence on the main cable a fixing device, a discharging mechanism having a guiding device and a pressing device, a feeding mechanism having a storage cylinder, an outer guide rail, an inner guide rail and a wrapping motor, a universal wheel device for walking on the surface of the main cable, an outer frame, and a walking mechanism having a walking motor;

[0007] S2: Connect the storage cylinder to the inner guide rail, bond one end of the wrapping tape to the storage cylinder and start the wrapping motor, and the feeding mechanism makes a rotational movement to wind the wrapping tape around the storage cylinder;

[0008] S3: Then separate the storage cylinder from the inner guide rail and connect it to the outer guide rail;

[0009] S4: Pass the wrapping tape through the guiding device and bond it to the main cable, then start the wrapping motor and the walking motor. The guiding device follows the feeding mechanism and the discharging mechanism to make a rotational movement, the wrapping tape on the storage cylinder makes a passive rotational movement, and at the same time the walking mechanism drives the entire feeding mechanism, the outer frame, and the discharging mechanism to make a linear walking movement. At this time, the wrapping tape on the storage cylinder makes a combined rotational and linear movement through the guiding device, so as to be spirally wound around the main cable, and the pressing device follows the guiding device to press the wrapping tape again;

[0010] S5: After a single winding is completed, wrap the heating blanket around the main cable after it has been wrapped with the wrapping tape, so that the wrapping tape adheres firmly.

[0011] After step S5, if not all the wrapping work is completed, only remove the fixing device, move the electric wrapping tape device for the bridge main cable to the position where the wrapping tape has not been wrapped, fix it again, and repeat operations S2 - S5 until the main cable is completely wrapped.

[0012] Before step S1, place the fixing device, feeding mechanism, discharging mechanism, universal wheel device, outer frame, traveling mechanism, and a sufficient amount of wrapping tape on the working rack.

[0013] After the main cable is completely wrapped, disassemble the fixing device, feeding mechanism, discharging mechanism, universal wheel device, outer frame, and traveling mechanism in reverse order of the installation sequence, and the wrapping work ends.

[0014] The outer frame is installed outside the feeding mechanism and the discharging mechanism, and makes the feeding mechanism and the discharging mechanism form an integral body.

[0015] The outer frame includes two side frames, connecting rods connected between the two side frames, and a positioning plate installed in each side frame respectively.

[0016] The traveling mechanism includes a U-shaped guide seat arranged axially along the top of the bridge main cable, a rack fixedly installed in the guide groove of the U-shaped guide seat, two support blocks arranged at the bottom of the U-shaped guide seat, and a traveling motor fixedly installed on the outer frame.

[0017] A driving gear is installed on the output shaft of the wrapping motor, and an annular gear ring for cooperating with the driving gear of the wrapping motor is provided at the inner side guide rail.

[0018] The advantages of the present invention are as follows:

[0019] The entire electric wrapping tape device for the bridge main cable is fixed on the main cable by the fixing mechanism, ensuring that the radial relative positions of other mechanisms and the main cable remain unchanged. During operation, when pre-wrapping, the wrapping tape is pre-wound on the storage cylinder. When wrapping, the traveling mechanism drives the feeding mechanism, discharging mechanism, etc. to perform linear motion, cooperating with the rotational motion of the guiding mechanism to form a spiral winding function. Thus, not only can the wrapping tape be automatically wound around the main cable conveniently and quickly, but also the repeated installation and disassembly time of the automatic wrapping tape device is reduced, thereby greatly improving the winding efficiency, saving manpower, and effectively reducing the safety hazards brought by workers' high-altitude operations. In particular, the overlapping rate of the wrapping tape can be controlled by adjusting the speed ratio of the wrapping motor and the traveling motor, improving the wrapping effect. Description of the Drawings

[0020] Figure 1Schematic three-dimensional structure diagram of the electric wrapping tape device for the main cable of a bridge in the present invention;

[0021] Figure 2 Schematic structure diagram of the fixing device in the present invention;

[0022] Figure 3 Schematic three-dimensional structure diagram of the feeding mechanism in the present invention;

[0023] Figure 4 Schematic three-dimensional structure diagram of the discharging mechanism in the present invention;

[0024] Figure 5 Schematic three-dimensional structure diagram of the storage cylinder in the present invention. Specific implementation manner

[0025] The working method of the electric wrapping tape device for the main cable of a bridge in the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0026] As shown in the figure, the working method of the electric wrapping tape device for the main cable of a bridge in the present invention is realized based on the electric wrapping tape device for the main cable of a bridge composed of a fixing device 1, a discharging mechanism 2, a feeding mechanism 3, a universal wheel device 4, an outer frame 5, and a traveling mechanism 6. It can be seen from the figure that when in use, two fixing devices 1 are adopted. Each of the said fixing devices 1 includes two semi-circular rings 11 that can be clamped around the main cable of the bridge and a support plate 12 welded between the two semi-circular rings;

[0027] The said feeding mechanism 3 includes a storage cylinder 31 for feeding, an outer guide rail 34 and an inner guide rail 33 that cooperate with the storage cylinder 31, and a wrapping motor 32 for realizing power drive. A driving gear is installed on the output shaft of the wrapping motor 32. An annular gear 36 for cooperating with the driving gear of the wrapping motor 32 is provided at the inner guide rail 33. A flange connection seat 35 is provided on the left side of the storage cylinder 31, and a flange cylinder seat 37 with two switching flanges 36 is provided on the right side of the storage cylinder 31. Universal wheel devices 4 that press on the surface of the main cable of the bridge are provided at both the flange connection seat 35 of the storage cylinder 7 and the flange cylinder seat 37;

[0028] The said discharging mechanism 2 includes an annular support guide seat 23, a guiding device 21 for guiding and releasing the wrapping tape, and a pressing device 22 that cooperates with the guiding mechanism. The wrapping tape can bypass the guiding device 21 and the pressing device 22 to fix its end on the main cable 1 of the bridge. By fixedly connecting the inner guide rail 33 with the left switching flange of the flange cylinder seat, the storage cylinder can rotate self-driven under the drive of the wrapping motor 32; by connecting and fixing the outer guide rail 34 with the right switching flange of the flange cylinder seat, at this time, the inner guide rail 33 is separated from the storage cylinder 7, and thus the wrapping motor 32 cannot drive the storage cylinder to rotate.

[0029] The said outer frame 5 includes two side frames 51, connecting rods 52 connected between the two side frames, and a positioning plate 53 respectively installed in each side frame. One positioning plate cooperates with the feeding mechanism, and the other positioning plate cooperates with the discharging mechanism. The main function of the connecting rod is to connect the two side frames. Each side frame 51 is composed of two semi-frames hinged to each other through a hinge device, so as to reduce the repeated installation and disassembly time of the automatic tape wrapping device and improve the tape wrapping efficiency. The outer frame 5 is installed outside the feeding mechanism and the discharging mechanism, and makes the feeding mechanism and the discharging mechanism form an integral moving structure.

[0030] The said traveling mechanism 6 includes a U-shaped guide seat 62 arranged axially along the top of the main cable of the bridge, a rack 63 fixedly installed in the guide groove of the U-shaped guide seat, two support blocks 64 arranged at the bottom of the U-shaped guide seat, and a traveling motor 61 fixedly installed on the outer frame 5. A strip-shaped limit groove is arranged on the side surface of the U-shaped guide seat 25. An output gear that cooperates with the rack through the strip-shaped limit groove is installed on the motor shaft of the traveling motor. The U-shaped guide seat is respectively installed on the support plates of the two fixing devices through the two support blocks 49.

[0031] Based on the above-mentioned electric tape wrapping device for bridge main cables, the working method of the present invention includes the following steps:

[0032] S1: Assemble in sequence on the main cable an electric tape wrapping device for bridge main cables composed of a fixing device 1, a discharging mechanism 2 having a guiding device 21 and a pressing device 22, a feeding mechanism 3 having a storage cylinder 31, an outer guide rail 34, an inner guide rail 33 and a wrapping motor 32, a universal wheel device 4 for walking on the surface of the main cable, an outer frame 5, and a traveling mechanism 6 having a traveling motor 61;

[0033] S2: During pre-wrapping, connect the storage cylinder 31 to the inner guide rail 33, bond one end of the wrapping tape to the storage cylinder 31, and start the wrapping motor 32. The wrapping motor 32 drives the storage cylinder to rotate, and winds the wrapping tape around the storage cylinder 31;

[0034] S3: Then separate the storage cylinder 31 from the inner guide rail 33 and connect it to the outer guide rail 34;

[0035] S4: Pass the wrapping tape through the guiding device 21 and bond it to the main cable. Then start the wrapping motor 32 and the traveling motor 61. The guiding device 21 rotates following the feeding mechanism 3 and the discharging mechanism 2. The wrapping tape on the storage cylinder 31 makes a passive rotational movement. At the same time, the traveling mechanism 6 drives the entire feeding mechanism 3, the outer frame 5, and the discharging mechanism 2 to make a linear traveling movement. At this time, the wrapping tape on the storage cylinder 31 makes a compound rotational and linear movement through the guiding device, so as to be spirally wound around the main cable. The pressing device 22 follows the guiding device to press the wrapping tape again, thereby achieving the purpose of pressing the wrapping tape onto the surface of the main cable after the wrapping tape is wound through this pressing device;

[0036] The wrapping motor should be a motor with adjustable direction and speed. During pre-wrapping and when wrapping the tape, the rotational direction and speed of the motor are different. During this process, the overlap rate of the wrapping tape can be controlled by adjusting the speed ratio of the wrapping motor and the traveling motor.

[0037] S5: After a single wrapping is completed, wrap the heating blanket around the main cable after the wrapping tape is wrapped to make the wrapping tape firmly adhere.

[0038] S6: If not all the wrapping work is completed, only remove the fixing device 1, and move the electric wrapping tape device for the bridge main cable to the position where the wrapping tape has not been wrapped, fix it again, and repeat operations S2 - S5 until the main cable is completely wrapped.

[0039] S7: After the main cable is completely wrapped, remove the fixing device 1, the feeding mechanism 3, the discharging mechanism 2, the universal wheel device 4, the outer frame 5, and the traveling mechanism 6 in reverse order of the installation sequence, and the wrapping work is over.

[0040] Further, before step S1, place the fixing device 1, the feeding mechanism 3, the discharging mechanism 2, the universal wheel device 4, the outer frame 5, the traveling mechanism 6, and a sufficient amount of wrapping tape on the working rack.

Claims

1. A working method of an electric wrapping tape device for the main cable of a bridge, characterized in that, Place the fixing device (1), the feeding mechanism (3), the discharging mechanism (2), the universal wheel device (4), the outer frame (5), the traveling mechanism (6), and a sufficient amount of winding tape on the working rack; the outer frame (5) is installed outside the feeding mechanism and the discharging mechanism to integrate the feeding mechanism and the discharging mechanism; the outer frame (5) includes two side frames (51), connecting rods (52) connected between the two side frames, and a positioning plate (53) respectively installed in each side frame; the traveling mechanism (6) includes a U-shaped guide seat (62) arranged axially along the top of the main cable of the bridge, a rack (63) fixedly installed in the guide groove of the U-shaped guide seat, two support blocks (64) arranged at the bottom of the U-shaped guide seat, and a traveling motor (61) fixedly installed on the outer frame (5); the feeding mechanism includes a winding motor (32), and a driving gear is installed on the output shaft of the winding motor (32), and an annular gear (36) for cooperating with the driving gear of the winding motor (32) is provided at the inner side guide rail (33); Specifically, it includes the following steps: S1: Assemble the fixing device (1) on the main cable in sequence, the discharging mechanism (2) with a guiding device (21) and a pressing device (22), the feeding mechanism (3) with a storage cylinder (31), an outer side guide rail (34), an inner side guide rail (33), and a winding motor (32), the universal wheel device (4) for traveling on the surface of the main cable, the outer frame (5), and the traveling mechanism (6) with a traveling motor (61); S2: Connect the storage cylinder (31) to the inner side guide rail (33), bond one end of the winding tape to the storage cylinder (31), and start the winding motor (32), and the feeding mechanism (3) makes a rotational motion to wind the winding tape around the storage cylinder (31); S3: Then separate the storage cylinder (31) from the inner side guide rail (33) and connect it to the outer side guide rail (34); S4: Pass the winding tape through the guiding device (21) and bond it to the main cable, then start the winding motor (32) and the traveling motor (61), the guiding device (21) follows the feeding mechanism (3) and the discharging mechanism (2) to make a rotational motion, the winding tape on the storage cylinder (31) makes a passive rotational motion, and at the same time the traveling mechanism (6) drives the entire feeding mechanism (3), the outer frame (5), and the discharging mechanism (2) to make a linear traveling motion. At this time, the winding tape on the storage cylinder (31) makes a combined rotational and linear motion through the guiding device, so as to be helically wound around the main cable, and the pressing device (22) follows the guiding device to press the winding tape again; S5: After a single winding is completed, wrap the heating blanket around the main cable after being wrapped by the winding tape to make the winding tape firmly adhere.

2. The working method of the electric wrapping tape device for the main cable of a bridge according to claim 1, characterized in that: After step S5, if not all winding work is completed, only disassemble the fixing device (1), move the electric winding tape device for the main cable of the bridge to the position where the winding tape has not been wrapped, fix it again, and repeat operations S2 - S5 until the main cable is completely wrapped.

3. The working method of the electric wrapping tape device for the main cable of a bridge according to claim 2, characterized in that: After the main cable is completely wrapped, the fixing device (1), the feeding mechanism (3), the discharging mechanism (2), the universal wheel device (4), the outer frame (5) and the traveling mechanism (6) are disassembled in reverse order of the installation sequence, and the wrapping work is completed.

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