Guide device traveling along stay cable, and stay cable inspection trolley traction method paired with same

Abstract

Disclosed in the present invention are a guide device traveling along a stay cable, and a stay cable inspection trolley traction method paired with same. The guide device comprises a rolling guide mechanism and a tower-top light-duty winch system, wherein the rolling guide mechanism is slidably arranged on a stay cable to be inspected; the tower-top light-duty winch system is arranged on a tower top and is connected to the rolling guide mechanism by means of a cable, and then drives the rolling guide mechanism to move along said stay cable; and a traction rope on an inspection trolley traction winch arranged on a bridge deck is slidably connected to the rolling guide mechanism, and is then fixedly connected to the stay cable inspection trolley arranged on said stay cable. The present invention enables, without the addition of an additional operating platform, the traction direction of the inspection trolley to be parallel to the traveling trajectory of the stay cable inspection trolley, and achieves full cross-sectional inspectability and maintainability of a stay cable by means of the inspection trolley.

Description

Guiding device for walking along cable-stayed cable and matched cable-stayed cable maintenance vehicle traction method TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge detection and maintenance. More specifically, the present application relates to a guiding device for walking along a cable-stayed cable and a matched cable-stayed cable maintenance vehicle traction method. BACKGROUND

[0002] The cable-stayed cable maintenance vehicle is an important detection carrier and manned maintenance platform for the cable-stayed cable structure during the operation and maintenance of the cable-stayed bridge. The power for walking along the cable-stayed cable mainly comes from the traction winch. The winch is fixed on the bridge deck, and then guiding wheels are arranged at the corresponding positions of the bridge deck and the tower end. The winch rope passes through the guiding wheels on the ground and the tower end in turn, and then is connected with the cable-stayed cable maintenance vehicle. The maintenance vehicle walks along the cable-stayed cable, thereby realizing the detection and maintenance along the cable-stayed cable by the maintenance vehicle.

[0003] During the operation and maintenance of the bridge, the traffic transportation function is still borne. The detection and maintenance by the cable-stayed cable maintenance vehicle should as far as possible reduce the influence on the traffic. There are mainly two setting modes for the conventional tower end guiding device. One is arranged at the tower wall or the position where the cable to be maintained intersects with the tower wall, as shown in the patent (application number: 202022881157.3). In this mode, the winch rope is parallel to the cable to be maintained, and the maintenance vehicle can reach the top end of the cable. However, the operating personnel need to reach the tower wall to install the guiding device, and need to additionally use a tower external operation platform to reach the tower wall for installation, which involves high-altitude operation. The other mode is to arrange the tower end guiding device at the top end of the main tower. The operating personnel can directly enter the tower top from the internal passage of the main tower for operation without additional operation platform. However, when the traction rope passes through the guiding wheel at the top of the tower and is connected with the maintenance vehicle, the traction rope will form an angle with the corresponding maintenance vehicle walking track (the cable to be maintained). The closer the maintenance vehicle is to the tower wall, the larger the angle will be. When the angle increases to a certain extent, the maintenance vehicle cannot continue to walk along the cable, and thus the full-section accessibility cannot be realized. In the above two modes, the tower end guiding wheel is fixedly arranged, and there are certain deficiencies. SUMMARY

[0004] An object of the present application is to provide a guiding device for walking along a cable-stayed cable and a matched cable-stayed cable maintenance vehicle traction method, so as to realize that the traction direction of the maintenance vehicle is parallel to the walking track of the cable-stayed cable maintenance vehicle without increasing an additional operation platform, and realize the full-section accessibility of the maintenance vehicle along the cable-stayed cable.

[0005] In order to solve the above technical problems, the application provides a guide device for walking along a cable-stayed cable, which comprises a rolling guide mechanism and a tower top light hoist system, the rolling guide mechanism is slidably arranged on a cable-stayed cable to be repaired, the tower top light hoist system is arranged on a tower top and connected to the rolling guide mechanism through a cable, then the rolling guide mechanism is driven to move along the cable-stayed cable to be repaired, and a traction rope on a maintenance vehicle traction hoist arranged on a bridge surface is slidably connected to the rolling guide mechanism and then fixedly connected to a cable-stayed cable maintenance vehicle arranged on the cable-stayed cable.

[0006] Preferably, a bridge surface guide wheel is arranged on the bridge surface, and the traction rope on the maintenance vehicle traction hoist passes through the rolling guide mechanism through the bridge surface guide wheel and is connected to the cable-stayed cable maintenance vehicle.

[0007] Preferably, the rolling guide mechanism comprises a rolling assembly, a trolley group suspended below the rolling assembly through an arc-shaped shackle, and an upper connecting piece hinged to the rolling assembly through a pin shaft, the upper connecting piece is rotatably arranged with the rolling assembly, the rolling assembly is slidably arranged on the cable-stayed cable to be repaired, the trolley group is used for guiding the traction rope, and the arc-shaped shackle has an arc-shaped track, and the trolley group is arranged to be in a suitable position under the action of gravity along the arc-shaped track.

[0008] Preferably, the rolling assembly comprises a plurality of sets of rolling wheel groups arranged on both sides of the cable-stayed cable to be repaired, which just slide and clamp the cable-stayed cable to be repaired, and the plurality of sets of rolling wheel groups are fixedly connected and limited through two side plates.

[0009] Preferably, each set of rolling wheel group comprises two saddle-shaped rolling wheels, and the arc of each rolling wheel is not less than 120°.

[0010] Preferably, the upper connecting piece comprises a pair of connecting plates and a connecting shaft arranged between the pair of connecting plates, the pair of connecting plates are rotatably connected to the top of the two side plates through pin shafts, and the cable of the light hoist is sleeved with the connecting shaft of the upper connecting piece.

[0011] Preferably, the tower top light hoist system comprises a light hoist fixedly arranged on a main tower top platform, and a tower top guide mechanism matched with the light hoist, and the cable is connected to the upper connecting piece through the tower top guide mechanism after being discharged from the light hoist.

[0012] Preferably, the tower top guide mechanism comprises a cantilever frame and a guide trolley group, one end of the cantilever frame is anchored on a side wall of the tower top, the other end of the cantilever frame extends out of the main tower wall and suspends the guide trolley group at the lower end, and the cable passes through the guide trolley group after being discharged.

[0013] The application also provides a cable-stayed cable maintenance vehicle traction method based on the guide device for walking along a cable-stayed cable, which comprises the following steps:

[0014] Step one: according to the structural features and position relationship of the guide device, the stay cable maintenance vehicle traction winch and the bridge guide wheel are arranged at the tower root position of the bridge deck, the stay cable maintenance vehicle is installed at the lower part of the stay cable to be maintained, the rolling guide mechanism is installed at the front section of the stay cable maintenance vehicle, and the tower top light winch system is installed at the tower top;

[0015] Step two: the cable of the tower top light winch is lowered from the tower top to the bridge deck, is sleeved with the upper connecting piece of the rolling guide mechanism, and the traction rope of the stay cable maintenance vehicle traction winch is sequentially threaded through the bridge guide wheel and the trolley group in the rolling guide mechanism and then connected with the stay cable maintenance vehicle;

[0016] Step three: the tower top light winch is started, the rolling guide mechanism at the front end of the stay cable maintenance vehicle is pulled along the stay cable by the cable of the tower top light winch, and the stay cable maintenance vehicle is pulled until the tower wall is reached, then the pulling is stopped, and the cable is kept in tension, in this process, the stay cable maintenance vehicle traction winch continuously releases the rope;

[0017] Step four: the stay cable maintenance vehicle traction winch is started, the stay cable maintenance vehicle can be pulled along the stay cable to be maintained, in this state, the traction rope is always parallel to the stay cable, and the stay cable maintenance vehicle can reach any position between the bridge deck and the rolling guide mechanism for maintenance.

[0018] The present application at least includes the following beneficial effects:

[0019] 1. The device and traction method of the present application have the operation points on the bridge deck or the tower top during implementation, no operation outside the tower is needed, no additional tower top operation platform is needed, the safety risk is greatly reduced, and the influence on traffic is greatly reduced.

[0020] 2. In the implementation process of the traction method of the present application, the rolling guide mechanism reaches the tower end position before the maintenance vehicle, the winch traction rope of the subsequent stay cable maintenance vehicle is parallel to the stay cable, the maintenance vehicle can reach all positions of the stay cable, and the applicability of the maintenance vehicle is increased.

[0021] Other advantages, objects and features of the present application will be partly embodied by the following description, and partly understood by those skilled in the art through research and practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 is a structural schematic view of a guide device walking along a stay cable;

[0023] Fig. 2 is a structural schematic view of a rolling guide mechanism and a tower top light winch system in a guide device walking along a stay cable;

[0024] Fig. 3 is a structural schematic view of a rolling guide mechanism in elevation in a guide device walking along a stay cable;

[0025] Fig. 4 is a schematic diagram of step one of a method for towing a cable inspection vehicle based on a guide device walking along a cable stay;

[0026] Fig. 5 is a schematic diagram of step two of a method for towing a cable inspection vehicle based on a guide device walking along a cable stay;

[0027] Fig. 6 is a schematic diagram of step three of a method for towing a cable inspection vehicle based on a guide device walking along a cable stay;

[0028] Fig. 7 is a schematic diagram of step four of a method for towing a cable inspection vehicle based on a guide device walking along a cable stay.

[0029] Legend of reference signs:

[0030] Rolling guide mechanism 1, rolling assembly 1-1, rolling wheel set 1-1a, two side plates 1-1b, rolling wheels 1-1c, arc-shaped shackles 1-2, trolley set 1-3, upper connecting pieces 1-4, connecting plates 1-4a, connecting shafts 1-4b, tower top light hoist system 2, light hoist 2-1, tower top guide mechanism 2-2, cantilever frame 2-2a, guide trolley set 2-2b, cable 2-3, inspection vehicle towing hoist 3, towing rope 3-1, bridge deck guide wheels 4, cable stay inspection vehicle 5, cable stay a to be inspected. DETAILED DESCRIPTION

[0031] In order to better understand the purpose, structure and function of the present application, the following will be further described in detail in combination with the drawings, so that those skilled in the art can implement it according to the description.

[0032] It should be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified; in the description of the present application, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0033] As shown in Figure 1, the guiding device for walking along the cable-stayed cable of the present application comprises a rolling guiding mechanism 1 arranged on the cable-stayed cable and a light tower top hoist system 2. The rolling guiding mechanism is arranged on the cable-stayed cable to be maintained and repaired, and the light tower top hoist system is arranged on the tower top and connected to the rolling guiding mechanism through a cable, then drives the rolling guiding mechanism to move along the cable-stayed cable to be maintained and repaired. The traction rope on the maintenance vehicle traction hoist arranged on the bridge is slidably connected to the rolling guiding mechanism and then fixedly connected to the cable-stayed cable maintenance vehicle arranged on the cable-stayed cable. The bridge surface is provided with a bridge surface guide wheel, and the traction rope on the maintenance vehicle traction hoist passes through the rolling guiding mechanism through the bridge surface guide wheel and is connected to the cable-stayed cable maintenance vehicle.

[0034] As shown in Figure 2, the rolling guiding mechanism 1 is arranged on the corresponding cable-stayed cable a to be maintained and repaired, comprising a rolling assembly 1-1, a trolley group 1-3 suspended below the rolling assembly through an arc-shaped shackle 1-2, and an upper connecting piece 1-4 hinged to the rolling assembly through a pin shaft. The upper connecting piece 1-4 of the trolley group can rotate with the rolling assembly 1-1.

[0035] As shown in Figure 2, the light tower top hoist system 2 comprises a light hoist 2-1 fixedly arranged on the main tower top platform, a tower top guiding mechanism 2-2 matched with the light hoist, and a cable 2-3 connected to the upper connecting piece 1-4 from the light hoist 2-1 after the cable is discharged.

[0036] As shown in Figure 3, the rolling assembly 1-1 comprises two sets of rolling wheel groups 1-1a arranged on both sides of the cable-stayed cable, two side plates 1-1b for positioning and limiting the rolling wheel groups, and two saddle-shaped rolling wheels 1-1c in each set of rolling wheel group 1-1a. The curvature of each rolling wheel 1-1c is not less than 120°.

[0037] As shown in Figure 3, the arc-shaped shackle 1-2 is a trolley group with an arc-shaped track, so that the trolley group 1-3 can be in a suitable position under the action of its own weight along the arc-shaped track.

[0038] As shown in Figure 3, the upper connecting piece 1-4 comprises a pair of connecting plates 1-4a and a connecting shaft 1-4b. The pair of connecting plates are respectively rotatably connected to the top of the two side plates through pin shafts, and the cable of the light hoist system is sleeved with the connecting shaft 1-4b of the upper connecting piece after passing through the tower top guiding mechanism.

[0039] As shown in Figure 2, the tower top guiding mechanism 2-2 comprises a cantilever frame 2-2a and a guiding trolley group 2-2b. One end of the cantilever frame is anchored to the side wall of the tower top, the other end extends out of the main tower wall, and the guiding trolley group 2-2b is suspended at the lower end. The cable passes through the guiding trolley group after being discharged.

[0040] The cable-stayed cable maintenance vehicle traction method based on this guiding device is as follows:

[0041] As shown in Fig. 4, step one: according to the structural features and position relationship of the guide device, the stay cable maintenance vehicle traction hoist 3 and the bridge guide wheel 4 are arranged at the tower root position of the bridge deck, the stay cable maintenance vehicle 5 is installed at the lower part of the stay cable a to be maintained, the rolling guide mechanism 1 is installed at the front section of the maintenance vehicle, and the tower top light hoist system 2 is installed at the tower top.

[0042] As shown in Fig. 5, step two: the cable 2-3 of the tower top light hoist is passed through the guide trolley group on the tower top guide mechanism, and then is lowered to the bridge deck, and is sleeved with the upper connecting piece 1-4 of the rolling guide mechanism 1, and the traction rope 3-1 of the stay cable maintenance vehicle traction hoist 3 is sequentially passed through the bridge guide wheel 4 and the trolley group 1-3 in the rolling guide mechanism, and then is connected with the stay cable maintenance vehicle 5.

[0043] As shown in Fig. 6, step three: the tower top light hoist 2-1 is started, the rolling guide mechanism 1 at the front end of the stay cable maintenance vehicle is pulled along the stay cable by the tower top light hoist cable 2-3, until it reaches the tower wall, then the traction is stopped, and the cable is kept in tension, and in this process, the stay cable maintenance vehicle traction hoist 3 continuously releases the rope.

[0044] As shown in Fig. 7, step four: the stay cable maintenance vehicle traction hoist 3 is started, and the stay cable maintenance vehicle 5 can be pulled along the stay cable a to be maintained, in this state, the traction rope 3-1 always keeps parallel with the stay cable, and the stay cable maintenance vehicle 5 can reach any position between the bridge deck and the rolling guide mechanism 1 for maintenance.

[0045] It can be understood that the present application is described by some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the present application. Although the embodiments of the present application have been disclosed as above, it is not limited to the application and implementation listed in the specification and embodiment, and it can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art, therefore, the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and equivalent scope.

Claims

1. A guide for walking along a stay cable, characterized in that The rolling guide mechanism is slidingly arranged on the cable to be repaired, and the light hoist system at the top of the tower is arranged at the top of the tower and connected to the rolling guide mechanism through a cable, and then drives the rolling guide mechanism to move along the cable to be repaired.

2. The guide for walking along a stay cable as defined in claim 1, characterized in that The bridge surface is provided with a bridge guide wheel, and the traction rope on the inspection vehicle traction hoist passes through the rolling guide mechanism through the bridge guide wheel and is connected with the cable inspection vehicle.

3. The guide for walking along a stay cable as defined in claim 1, wherein The rolling guide mechanism comprises a rolling assembly, a trolley group suspended below the rolling assembly through an arc-shaped shackle, and an upper connecting piece hinged to the rolling assembly through a pin shaft, the upper connecting piece is rotationally arranged with the rolling assembly, the rolling assembly is slidingly arranged on the cable to be repaired, the trolley group is used for guiding the traction rope, the arc-shaped shackle has an arc-shaped track, and the trolley group is arranged to be in a suitable position under the action of gravity along the arc-shaped track.

4. The guide for walking along a stay cable as defined in claim 3, wherein The rolling assembly comprises a plurality of sets of rolling wheel groups arranged on both sides of the cable to be repaired, which slidingly clamps the cable to be repaired therebetween, and the plurality of sets of rolling wheel groups are fixedly connected and limited by the two side plates.

5. The guide for walking along a stay cable as defined in claim 4, wherein Each set of rolling wheel group comprises two saddle-shaped rolling wheels, and the arc of each rolling wheel is not less than 120°.

6. The guide for walking along a stay cable as defined in claim 4, wherein The upper connecting piece comprises a pair of connecting plates and a connecting shaft arranged between the pair of connecting plates, the pair of connecting plates are rotationally connected to the top of the two side plates through pin shafts, and the cable of the light hoist is sleeved with the connecting shaft of the upper connecting piece.

7. The guide for walking along a stay cable as defined in claim 3, wherein The light hoist system at the top of the tower comprises a light hoist fixedly arranged on the main tower top platform, a tower top guide mechanism matched with the light hoist, and the cable is connected with the upper connecting piece through the tower top guide mechanism after being discharged from the light hoist.

8. The guide for walking along a stay cable as defined in claim 7, wherein The tower top guide mechanism comprises a cantilever frame and a guide trolley group, one end of the cantilever frame is anchored on the side wall of the tower top, the other end extends out of the main tower wall and suspends the guide trolley group at the lower end, and the cable is discharged from the guide trolley group after being discharged from the light hoist.

9. A method for towing a stay cable inspection vehicle based on a guide device for walking along a stay cable, characterized in that, The method comprises the following steps: Step one: according to the structural characteristics and positional relationship of the guide device, the cable inspection vehicle traction hoist and the bridge guide wheel are arranged at the tower root position of the bridge surface, the cable inspection vehicle is installed at the lower part of the cable to be repaired, the rolling guide mechanism is installed at the front section of the cable inspection vehicle, and the light hoist system at the top of the tower is installed at the top of the tower; Step two: the cable of the light hoist at the top of the tower is discharged from the top of the tower and then put down to the bridge surface, and is sleeved with the upper connecting piece of the rolling guide mechanism, the traction rope of the cable inspection vehicle traction hoist is sequentially connected with the cable inspection vehicle after passing through the bridge guide wheel and the trolley group in the rolling guide mechanism; Step three: start the light hoist at the top of the tower, use the cable of the light hoist at the top of the tower to pull the rolling guide mechanism at the front end of the cable inspection vehicle along the cable, until reaching the tower wall, then stop pulling, keep the cable in tension, and in this process, the cable inspection vehicle traction hoist continuously releases the rope; Step four: start the cable inspection vehicle traction winch, the cable inspection vehicle can be pulled along the cable to be inspected. In this state, the traction rope is always parallel to the cable, and the cable inspection vehicle can reach any position between the bridge and the rolling guide mechanism for inspection.

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