A three-way movable maintenance device for the inner side of an inverted Y-shaped tower column of a cable-stayed bridge

Abstract

A maintenance device for the inner side of an inverted Y-shaped tower column of a cable-stayed bridge that can be moved in three directions. The hanging point device in the tower is stuck in the middle of the inverted Y-shaped tower column by gravity. The hanging point device in the tower includes an annular frame, a track, and an electric running wheel. The track is arranged below the annular frame in the transverse direction of the bridge. The electric running wheel is stuck on the track and can move along the track in the transverse direction of the bridge. The suspended operating platform has two sliding hanging baskets symmetrically hung on both sides of the middle hanging basket and can slide along the bridge along the middle hanging basket. The hanging rope connects the suspended operating platform with the hanging point device in the tower, driving the suspended operating platform to be lifted and lowered vertically. The maintenance equipment of the present invention does not need to set anchors on the tower column because the hanging point device in the tower is stuck in the middle of the tower column by gravity, thereby reducing the impact on the tower column structure. The suspended operating platform can move in three directions, can avoid interference from the inclined cable, and can achieve full coverage maintenance of the inner side of the inverted Y-shaped tower column. During the maintenance construction, due to the small construction impact range, the impact on the bridge deck driving is small.

Description

Technical Field

[0001] The invention relates to the technical field of bridge maintenance, in particular to a maintenance device for the inner side of an inverted Y-shaped tower column of a three-way movable cable-stayed bridge. Background Art

[0002] Cable-stayed bridges have been widely used in the field of bridge engineering due to their beautiful appearance, reasonable force, and large spanning capacity. As the main load-bearing component, the tower of a cable-stayed bridge bears various loads transmitted through the cable-stayed cables. During the operation of the bridge, the tower needs to be inspected and maintained due to structural safety requirements, or the tower needs to be painted and decorated due to landscape requirements. For the lower fork tower of the inverted Y-shaped tower, there are problems such as the inner side tilting inward and the inner side having 0# cable interference. How to inspect the inner side of the lower fork tower of the inverted Y-shaped tower is a difficult problem. Therefore, it is necessary to develop a maintenance equipment that can meet the requirements of light weight, easy operation, and the ability to inspect the inner side of the lower fork tower of the inverted Y-shaped tower without being affected by obstacles such as cable-stayed cables. Summary of the invention

[0003] The purpose of the present invention is to provide a three-way movable maintenance device for the inner side of an inverted Y-shaped tower column of a cable-stayed bridge, which can realize the maintenance of the inner side of the lower fork tower column of the inverted Y-shaped tower column without being affected by obstacles such as inclined cables.

[0004] In order to achieve the above-mentioned object, the technical solution of the present invention is as follows: a maintenance device for the inner side of an inverted Y-shaped tower column of a three-way movable cable-stayed bridge, characterized in that the maintenance device comprises:

[0005] A suspension point device in the tower, wherein the suspension point device in the tower is clamped in the middle of the inverted Y-shaped tower column by gravity, and the suspension point device in the tower comprises an annular frame, a track, and an electric running wheel, wherein the track is arranged in a transverse direction below the annular frame, and the electric running wheel is clamped on the track and can run along the track in a transverse direction;

[0006] A suspended operating platform, the suspended operating platform comprising a middle hanging basket and two sliding hanging baskets, the two sliding hanging baskets are symmetrically hung on both sides of the middle hanging basket and can slide along the middle hanging basket in the direction of the bridge;

[0007] The suspension rope connects the suspension operation platform with the suspension point device in the tower, and drives the suspension operation platform to perform vertical lifting.

[0008] Furthermore, upper railings and lower railings are respectively arranged on the outer sides of both sides of the middle hanging basket, and an upper hook with an opening facing downwards which is arranged in cooperation with the upper railings is arranged on the upper part of the sliding hanging basket corresponding to the middle hanging basket, and a lower hook with an opening facing upwards which is arranged in cooperation with the lower railings is arranged on the lower part, sliding rollers are arranged on both sides and the top of the inner side of the upper hook, and sliding rollers are arranged on both sides and the bottom of the inner side of the lower hook, the upper hook of the sliding hanging basket is hung on the upper railings of the middle hanging basket, and the lower hook of the sliding hanging basket is hung on the lower railings of the middle hanging basket, and the sliding rollers are used to slide along the middle hanging basket in the direction of the bridge.

[0009] Furthermore, the mid-tower suspension point device includes a total of 4 electric running wheels, 2 on each side of the track, and the two electric running wheels on the same side are connected by an upper connecting rod to ensure the synchronization of the running of the two electric running wheels on the same side.

[0010] Furthermore, the suspension operating platform is provided with four suspension points, and the suspension ropes include working ropes and safety ropes; each suspension point of the suspension operating platform is connected to an electric walking wheel in the suspension point device in the tower through a working rope and a safety rope respectively. During normal operation, the working rope bears force, and the safety rope is retracted and released accordingly. When the working suspension rope breaks in danger, the safety rope starts to bear force, and the safety lock is automatically activated for braking to prevent the suspension operating platform from continuing to descend.

[0011] Furthermore, the two sliding hanging baskets are connected at the bottom by a lower connecting rod to ensure that the sliding hanging baskets on both sides slide synchronously and work symmetrically.

[0012] Furthermore, the suspended operating platform is equipped with a hoist for driving the operating platform to move up and down, an operating control system, a rope retractor and a safety lock.

[0013] Furthermore, when the maintenance equipment is in use, the suspension operating platform is first lifted vertically to a certain height by the hoist in the suspension operating platform, and then the electric walking wheels in the hanging point device in the tower are used to drive the suspension operating platform to move horizontally to a certain position, and finally the sliding hanging basket is used to slide along the bridge to inspect the inner side of the tower column while avoiding interference from the inclined cables.

[0014] The beneficial effects of the present invention are:

[0015] 1) This maintenance equipment can realize full coverage maintenance of the inner side of the inverted Y-shaped tower of the cable-stayed bridge. When encountering obstacles such as the cable-stayed cable, the cable-stayed cable can be avoided by moving in three directions of the suspended operating platform.

[0016] 2) The annular clamp device in the tower uses gravity to clamp the middle of the tower column, without the need to set anchors on the tower column, reducing the impact on the tower column structure.

[0017] 3) When the suspended operating platform and lifting rope are not in use, they can be placed in the warehouse to avoid exposure to the outdoor environment, which greatly increases their service life.

[0018] 4) During maintenance and repair work, the impact on traffic on the bridge deck is small due to the small scope of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a cross-bridge side view of the inner side maintenance equipment of the inverted Y-shaped tower of a three-way movable cable-stayed bridge.

[0020] Figure 2 for Figure 1 Middle AA section.

[0021] Figure 3 This is a large-scale drawing of the inner side maintenance equipment of the inverted Y-tower column of a three-way movable cable-stayed bridge.

[0022] Figure 4 for Figure 3 BB cross section in.

[0023] Figure 5 for Figure 3 Sample A in the picture.

[0024] Figure 6 for Figure 3 Sample B in the picture.

[0025] The figure includes: 1- tower hanging point device, 1.1- ring frame, 1.2- track, 1.3- electric running wheel, 1.4- upper connecting rod, 2- suspension operation platform, 2.1- middle hanging basket, 2.1.1- upper railing, 2.1.2- lower railing, 2.2- sliding hanging basket, 2.2.1- upper hook, 2.2.2- lower hook, 2.2.3- sliding roller, 2.3- lower connecting rod, 2.4- hanging point, 3- hanging rope, 4- inclined cable, 5- inner side of tower column. DETAILED DESCRIPTION

[0026] The following is combined with Figures 1 to 6 The present invention is further described with reference to the accompanying drawings and examples.

[0027] Reference Figure 1 The present invention discloses a maintenance device for the inner side of an inverted Y-shaped tower column of a three-way movable cable-stayed bridge, comprising: a tower hanging point device 1, a suspension operation platform 2 and a hanging rope 3. The tower hanging point device 1 is stuck in the middle of the inverted Y-shaped tower column by gravity.

[0028] Reference Figure 3 , Figure 4The tower suspension point device 1 includes an annular frame 1.1, a track 1.2, and an electric running wheel 1.3. The annular frame 1.1 is stuck in the middle of the inverted Y-shaped tower column, the track 1.2 is arranged transversely below the annular frame 1.1, and the electric running wheel 1.3 is stuck on the track 1.2 and can run transversely along the track 1.2.

[0029] Reference Figure 3~Figure 6 The suspension operation platform 2 includes an intermediate hanging basket 2.1 and two sliding hanging baskets 2.2. The two sliding hanging baskets 2.2 are symmetrically hung on the upper railings 2.1.1 and the lower railings 2.1.2 on both sides of the intermediate hanging basket 2.1, and slide along the intermediate hanging basket 2.1 along the bridge direction using sliding rollers 2.2.1.

[0030] Specifically, upper railings 2.1.1 and lower railings 2.1.2 are respectively arranged on the outer sides of the two sides of the intermediate hanging basket 2.1, and an upper hook 2.2.1 with an opening downwards arranged in cooperation with the upper railing 2.1.1 is arranged on the upper part of the sliding hanging basket 2.2 corresponding to the intermediate hanging basket 2.1, and a lower hook 2.2.2 with an opening upwards arranged in cooperation with the lower railing 2.1.2 is arranged on the lower part, and sliding rollers 2.2.3 are arranged on both sides and the top of the inner side of the upper hook 2.2.1, and the lower hook 2.2.1 is provided with a plurality of sliding rollers 2.2.3. Sliding rollers 2.2.3 are provided on both sides and the bottom of the inner side of the hook 2.2.2. The upper hook 2.2.1 of the sliding hanging basket 2.2 is hung on the upper railing 2.1.1 of the middle hanging basket 2.1, and the lower hook 2.2.2 of the sliding hanging basket 2.2 is hung on the lower railing 2.1.2 of the middle hanging basket 2.1. The operator stands on the middle hanging basket 2.1 and manually pushes the sliding hanging basket 2.2. The sliding hanging basket 2.2 slides along the bridge direction along the middle hanging basket 2.1 using the sliding rollers 2.2.3.

[0031] Reference Figure 1 The suspension rope 3 connects the suspension operation platform 2 with the suspension point device 1 in the tower, driving the suspension operation platform 2 to perform vertical lifting.

[0032] Reference Figure 3 , Figure 4 The inspection equipment has four electric running wheels 1.3, two on each side of the track. The two electric running wheels on the same side are connected by an upper connecting rod 1.4 to ensure the synchronization of the running of the two electric running wheels 1.3 on the same side.

[0033] Refer to 3. Figure 4 The suspended operating platform 2 is provided with four suspension points 2.4, and the suspension rope 3 includes a working rope and a safety rope; each suspension point 2.4 of the suspended operating platform 2 is connected to an electric walking wheel 1.3 in the suspension point device 1 in the tower through a working rope and a safety rope. During normal operation, the working rope bears force, and the safety rope is retracted and released accordingly. When the working suspension rope breaks in danger, the safety rope starts to bear force, and the safety lock is automatically activated for braking to prevent the suspended operating platform from continuing to descend.

[0034] Reference Figure 3 The two sliding hanging baskets 2.2 are connected at the bottom by a lower connecting rod 2.3 to ensure that the sliding hanging baskets 2.2 on both sides slide synchronously and work symmetrically.

[0035] Reference Figure 1 , Figure 2 When the maintenance equipment is used, the hoist in the suspension operation platform 2 is first used to lift the suspension operation platform 2 vertically to a certain height, and then the electric walking wheel 1.3 in the tower suspension point device 1 is used to drive the suspension operation platform 2 to move horizontally to a certain position, and finally the sliding hanging basket 2.2 is used to slide along the bridge to inspect the inner side surface 5 of the tower column, while avoiding the interference of the inclined cable 4.

[0036] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A maintenance device for the inner side of an inverted Y-shaped tower column of a three-way movable cable-stayed bridge, characterized in that: The maintenance equipment includes: A suspension point device in the tower, wherein the suspension point device in the tower is clamped in the middle of the inverted Y-shaped tower column by gravity, and the suspension point device in the tower comprises an annular frame, a track, and an electric running wheel, wherein the track is arranged in a transverse direction below the annular frame, and the electric running wheel is clamped on the track and can run along the track in a transverse direction; A suspended operating platform, the suspended operating platform comprising a middle hanging basket and two sliding hanging baskets, the two sliding hanging baskets are symmetrically hung on both sides of the middle hanging basket and can slide along the middle hanging basket in the direction of the bridge; The suspension rope connects the suspension operation platform with the suspension point device in the tower, and drives the suspension operation platform to perform vertical lifting.

2. The maintenance equipment for the inner side of the inverted Y-shaped tower column of a three-way movable cable-stayed bridge according to claim 1, characterized in that: An upper railing and a lower railing are respectively arranged on the outer sides of both sides of the middle hanging basket; an upper hook with an opening downwards cooperating with the upper railing is arranged on the upper part of the sliding hanging basket corresponding to the middle hanging basket, and a lower hook with an opening upwards cooperating with the lower railing is arranged on the lower part; sliding rollers are arranged on both sides and the top of the inner side of the upper hook, and sliding rollers are arranged on both sides and the bottom of the inner side of the lower hook; the upper hook of the sliding hanging basket is hung on the upper railing of the middle hanging basket, and the lower hook of the sliding hanging basket is hung on the lower railing of the middle hanging basket, and the sliding rollers are used to slide along the middle hanging basket in the direction of the bridge.

3. The maintenance equipment for the inner side of the inverted Y-shaped tower column of a three-way movable cable-stayed bridge according to claim 1, characterized in that: The tower suspension point device comprises 4 electric running wheels in total, 2 on each side track, and the two electric running wheels on the same side are connected by an upper connecting rod to ensure the synchronization of the running of the two electric running wheels on the same side.

4. The maintenance equipment for the inner side of the inverted Y-shaped tower column of a three-way movable cable-stayed bridge according to claim 1, characterized in that: The suspended operating platform is provided with four suspension points, and the suspension ropes include working ropes and safety ropes; each suspension point of the suspended operating platform is connected to an electric walking wheel in the suspension point device in the tower through a working rope and a safety rope respectively. During normal operation, the working rope bears force, and the safety rope is retracted and released accordingly. When the working suspension rope breaks in danger, the safety rope starts to bear force, and the safety lock is automatically activated for braking to prevent the suspended operating platform from continuing to descend.

5. The maintenance equipment for the inner side of the inverted Y-shaped tower column of a three-way movable cable-stayed bridge according to claim 1, characterized in that: The two sliding hanging baskets are connected at the bottom through a lower connecting rod to ensure that the sliding hanging baskets on both sides slide synchronously and work symmetrically.

6. The maintenance equipment for the inner side of the inverted Y-shaped tower column of a three-way movable cable-stayed bridge according to claim 1, characterized in that: The suspended operating platform is equipped with a hoist for driving the operating platform to move up and down, an operating control system, a rope collector and a safety lock.

7. The maintenance equipment for the inner side of the inverted Y-shaped tower column of a three-way movable cable-stayed bridge according to claim 1, characterized in that: When the maintenance equipment is in use, the suspension operating platform is first lifted vertically to a certain height by the hoist in the suspension operating platform, and then the electric walking wheels in the hanging point device in the tower are used to drive the suspension operating platform to move horizontally to a certain position, and finally the sliding hanging basket is used to slide along the bridge direction to inspect the inner side of the tower column while avoiding interference from the inclined cables.

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