A main cable handrail rope walking device capable of crossing a handrail rope bracket

Abstract

The present invention relates to the technical field of maintenance of main cables of suspension bridges, and aims to solve the problem in the prior art that the main cable handrail rope bracket hinders the passage of the main cable inspection vehicle, resulting in complex structure and low passability and safety of various main cable inspection vehicles that travel on the handrail rope. A main cable handrail rope walking device that can cross the handrail rope bracket is provided, including a clamp support assembly and a clamp, the clamp support assembly is used to connect the vehicle frame; the clamp support assembly includes an annular moving belt, the annular moving belt can circulate, the clamp includes a plurality of clamps, the clamps are connected to the annular moving belt at intervals, the clamps are connected to a control mechanism, the control mechanism is used to control the opening and closing of the clamps, when the clamps rotate to the lower side of the annular moving belt, it can be clamped on the main cable handrail rope, when the clamps are about to leave the lower side of the annular moving belt, it can be separated from the main cable handrail rope; the present invention has a simple structure, can directly cross the handrail rope clamp, and will not damage the surface of the main cable, thereby improving the maintenance efficiency of the entire vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of main cable maintenance of suspension bridges, and in particular to a main cable handrail rope walking device capable of crossing a handrail rope bracket. Background Art

[0002] Suspension bridges are the preferred choice for extra-long span bridges due to their large span capacity, excellent load-bearing performance, and aesthetically pleasing appearance. The main cable is the most critical load-bearing and force-transmitting component of a suspension bridge, making its health particularly crucial and requiring regular maintenance. Currently, maintenance equipment for the main cable often uses wheeled or tracked wheels supported by steel wire ropes that travel over the cable surface. This poses problems such as poor safety, low maintenance efficiency, and potential damage to the cable's surface tape and anti-corrosion coating.

[0003] After studying the travel methods of suspension bridge main cable inspection vehicles, the industry has conducted extensive research on self-propelled main cable inspection vehicles on handrails to solve the problem of achieving full coverage inspection of suspension bridge main cables, slings, cable clamps, and shock absorbers without damaging the anti-corrosion coating on the main cable surface. However, due to the main cable handrail brackets that hinder the passage of these main cable inspection vehicles, the structures of various self-propelled main cable inspection vehicles on handrails are complex, and their maneuverability and safety are greatly reduced. Therefore, it is necessary to further optimize the structure of main cable inspection vehicles traveling on handrails. Summary of the Invention

[0004] The present invention aims to provide a main cable handrail rope walking device that can cross the handrail rope bracket to solve the problem in the prior art that the main cable handrail rope bracket hinders the passage of the main cable inspection vehicle, resulting in various main cable inspection vehicles that travel on the handrail rope having complex structures, low passability and safety.

[0005] The present invention is achieved by adopting the following technical solutions:

[0006] The present invention provides a main cable handrail rope walking device capable of crossing a handrail rope support, comprising a clamp support assembly and a clamp, wherein the clamp support assembly is used to connect to a vehicle frame;

[0007] The clamp support assembly includes an annular moving belt, which can operate in a cycle. The clamp includes a plurality of jaws, which are connected to the annular moving belt at intervals. The jaws are connected to a control mechanism, which is used to control the opening and closing of the jaws. When the jaws rotate to the lower side of the annular moving belt, they can clamp on the main cable handrail rope. When the jaws are about to leave the lower side of the annular moving belt, they can separate from the main cable handrail rope.

[0008] The main cable handrail rope walking device of the present invention has a simple structure, does not require modification of the handrail rope clamp, can pass directly through the handrail rope clamp, and will not damage the main cable surface protective layer and the wrapping belt, thereby improving the maintenance efficiency of the entire vehicle.

[0009] As the preferred technical solution:

[0010] The clamping jaw is connected to a guide wheel, which is located in an annular guide groove on the clamp support assembly. The shape of the annular guide groove is the same as that of the annular motion belt. The guide wheel rotates in the annular guide groove as the annular motion belt circulates.

[0011] As the preferred technical solution:

[0012] The clamping claw includes two symmetrically arranged clamping units, and a clamping opening is formed between the two clamping units for clamping the main cable handrail rope.

[0013] As the preferred technical solution:

[0014] The control mechanism includes a pressure wheel guide groove assembly, and the pressure wheel guide groove assembly is located inside the clamp support assembly;

[0015] The pressure wheel guide groove assembly includes a pressure wheel guide groove, the bottoms of both sides of the pressure wheel guide groove protrude downward to form a protrusion, and multiple pressure wheels are installed in the pressure wheel guide groove. Each pressure wheel is connected to a clamping unit of the clamping jaw through a connecting frame. When the pressure wheel passes through the protrusion, it will pull the clamping unit to open the clamping jaw.

[0016] As the preferred technical solution:

[0017] The above method is not limited to controlling the opening and closing of the clamping jaws, and other mechanical structures capable of driving the opening and closing of the clamping jaws can be used. For example, it can be achieved by a mechanical pulling structure in conjunction with a control system.

[0018] As the preferred technical solution:

[0019] A compression spring is connected between the connecting frame and the mounting seat of the clamping jaw, and the compression spring is used to provide a clamping force for the clamping jaw.

[0020] As the preferred technical solution:

[0021] A clamp support assembly is respectively arranged above the two main cable handrail ropes, and the clamp is connected to each clamp support assembly. A pressure wheel guide groove assembly is correspondingly arranged on the inner side of each clamp support assembly. The frame is located above the clamp support assembly and the pressure wheel guide groove assembly, and the clamp support assembly, the pressure wheel guide groove assembly and the frame are connected through a main shaft.

[0022] As the preferred technical solution:

[0023] The endless moving belt is driven by a driving device to circulate.

[0024] As the preferred technical solution:

[0025] The driving device may be an electric motor.

[0026] As the preferred technical solution:

[0027] The clamping jaws are connected to the annular motion belt via a cover plate, but the connection is not limited to the cover plate, and may also be a connecting plate, a connecting seat, etc.

[0028] As the preferred technical solution:

[0029] The endless motion belt adopts a chain or a synchronous belt.

[0030] As the preferred technical solution:

[0031] The annular motion belt is elliptical.

[0032] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0033] After the main cable handrail rope walking device of the present invention clamps the main cable handrail rope through the clamp, as the chain or synchronous belt rotates, the clamp connected to the chain or synchronous belt cyclically and alternately climbs the main cable handrail rope, achieving uninterrupted walking on the main cable handrail rope, thereby enabling the vehicle frame to move forward relative to the main cable handrail rope; the present invention can directly cross the handrail rope clamp without the need to modify the handrail rope clamp, and can be applied to the handrail rope currently widely used with the existing main cable handrail rope clamp, thereby improving the maintenance efficiency of the entire vehicle and enhancing the practicality of the main cable maintenance equipment. In this walking mode, the entire vehicle walks by clamping the main cable handrail rope with the clamp. During the walking process, the entire vehicle will not come into contact with the main cable, thereby ensuring that the surface protective layer and wrapping tape of the main cable will not be damaged. It is more friendly to the main cable and can effectively protect the life of the main cable protective layer. In addition, the walking device can be equipped with a manned work platform for use as manned maintenance equipment, or it can be equipped with only intelligent detection equipment for use as an intelligent detection vehicle, which can realize the separation of inspection and maintenance operations, improve the inspection efficiency and frequency of the main cable and its ancillary facilities, and can also carry out regular and planned fixed-point maintenance for the detected defects, which is of great significance to the scientific maintenance of the main cable and its ancillary facilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the structure of the main cable handrail rope walking device that can cross the handrail rope bracket according to the present invention. Figure 1 .

[0035] Figure 2 This is a schematic diagram of the structure of the main cable handrail rope walking device that can cross the handrail rope bracket according to the present invention. Figure 2 .

[0036] Figure 3 This is a schematic diagram of the working of the main cable handrail rope walking device that can cross the handrail rope bracket of the present invention. Figure 1 .

[0037] Figure 4 This is a schematic diagram of the working of the main cable handrail rope walking device that can cross the handrail rope bracket of the present invention. Figure 2 (Hide the clamp support assembly).

[0038] Figure 5 This is a schematic diagram of the working of the main cable handrail rope walking device that can cross the handrail rope bracket of the present invention. Figure 3 .

[0039] Figure 6 This is a schematic diagram of the clamping jaws of the present invention in an open state.

[0040] Figure 7 This is a schematic diagram of the clamping state of the clamping jaws according to the present invention.

[0041] Icons: 101 clamp support assembly, 102 clamp, 103 frame, 104 pressure wheel guide groove assembly, 105 main cable handrail rope, 106 main cable handrail rope bracket, 107 main cable, 108 main cable clamp, 109 guide wheel, 110 main shaft, 111 compression spring, 112 spring pressure wheel, 113 connecting frame, 114 driving device, 115 sprocket, 116 main cable sling, 101-1 annular motion belt, 101-2 annular guide groove, 102-1 clamping claw, 104-1 pressure wheel guide groove, 104-2 protrusion. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0043] Example 1

[0044] like Figure 1-Figure 7 As shown, this embodiment proposes a main cable handrail rope running device that can cross the handrail rope support. When working, the running device runs on the main cable handrail rope 105. Figure 3 and Figure 5In the figure, reference numeral 106 denotes a main cable handrail rope bracket, reference numeral 107 denotes a main cable, reference numeral 108 denotes a main cable clamp, and reference numeral 116 denotes a main cable sling.

[0045] The walking device includes a clamp support assembly 101 , a clamp 102 , a frame 103 and a pressure wheel guide groove assembly 104 .

[0046] A clamp support assembly 101 is arranged above each of the two main cable handrail ropes 105, and each of the clamp support assemblies 101 is connected to the clamp 102. A pressure wheel guide groove assembly 104 is correspondingly arranged on the inner side of each of the clamp support assemblies 101. The frame 103 is located above the clamp support assembly 101 and the pressure wheel guide groove assembly 104. The clamp support assembly 101, the pressure wheel guide groove assembly 104 and the frame 103 are connected through the main shaft 110.

[0047] The clamp support assembly 101 serves as the main load-bearing component, and the clamp support assembly 101 includes an annular motion belt 101-1. The annular motion belt 101-1 can be a chain or a synchronous belt. When a chain is used, it is installed and used in conjunction with a sprocket 115. When a synchronous belt is used, the synchronous belt is installed and used in conjunction with a pulley. The chain or synchronous belt can circulate under the action of a driving device 114.

[0048] The clamp 102 is connected to the annular motion belt 101-1 through a cover plate; the clamp 102 includes a plurality of clamping jaws 102-1, which are evenly and spaced apart and connected to the annular motion belt 101-1. When the annular motion belt 101-1 circulates, it drives each of the clamping jaws 102-1 to circulate.

[0049] In this embodiment, the annular motion belt 101-1 is elliptical, and three clamping jaws 102-1 are connected to the upper and lower sides of the annular motion belt 101-1, respectively. One clamping jaw 102-1 is connected to the front and rear sides of the annular motion belt 101-1, respectively.

[0050] The clamping jaws 102-1 running to the lower side of the circular moving belt 101-1 are used to connect with the main cable handrail rope 105 and clamp on the main cable handrail rope 105. At this time, there is no relative movement between the clamping jaws 102-1 and the main cable handrail rope 105. As the circular moving belt 101-1 runs, each clamping jaw 102-1 will experience various positions of the circular moving belt 101-1 upward, but will only clamp the main cable handrail rope 105 when it runs to the lower side of the circular moving belt 101-1. 05. When the clamping jaw 102-1 is about to reach the lower side of the circular moving belt 101-1, the clamping jaw 102-1 needs to be opened and connected to the main cable handrail rope 105. When the clamping jaw 102-1 is about to leave the lower side of the circular moving belt 101-1, the clamping jaw 102-1 needs to be opened and disengaged from the main cable handrail rope 105. This cycle will continue. The frame 103 will move forward relative to the main cable handrail rope 105 as the circular moving belt 101-1 rotates, thereby realizing uninterrupted movement of the entire vehicle on the handrail rope.

[0051] The clamp 102 is connected to a guide wheel 109. The main function of the guide wheel 109 is to provide support and guidance, and it can also improve the overall load-bearing capacity of the drive mechanism. The guide wheel 109 is located in an annular guide groove 101-2 on the surface of the clamp support assembly 101. The shape of the annular guide groove 101-2 is the same as that of the annular motion belt 101-1, and the two are concentric. The size of the annular guide groove 101-2 is slightly smaller than that of the annular motion belt 101-1. Each of the clamping jaws 102-1 is connected to two sets of the guide wheels 109. The guide wheels 109 will rotate in the annular guide groove 101-2 as the annular motion belt 101-1 circulates.

[0052] The clamp 102 is further connected to a compression spring 111 and a spring pressure wheel 112, and each clamping jaw 102-1 corresponds to a compression spring 111 and a spring pressure wheel 112. The clamping jaw 102-1 includes two symmetrically arranged clamping units, and a clamping opening is formed between the two clamping units for clamping the main cable handrail rope 105.

[0053] The clamp 102 cooperates with the pressure wheel guide groove assembly 104 to control the clamp 102-1 to open when it is about to leave the lower side of the annular motion belt 101-1 and when it is about to reach the lower side of the annular motion belt 101-1, and separate from the main cable handrail rope 105. The pressure wheel guide groove assembly 104 is located on the inner side of the clamp support assembly 101.

[0054] The pressure wheel guide groove assembly 104 includes a pressure wheel guide groove 104-1, and the spring pressure wheel 112 is located in the pressure wheel guide groove 104-1. The spring pressure wheel 112 rotates in the pressure wheel guide groove 104-1 and rotates along the pressure wheel guide groove 104-1. The pressure wheel guide groove 104-1 is also generally elliptical, but the bottoms on both sides of the pressure wheel guide groove 104-1 protrude downward to form protrusions 104-2. At this point, the spring pressure wheel 112 will be restricted by the pressure wheel guide groove 104-1 and move downward along the protrusions 104-2 of the pressure wheel guide groove 104-1. The spring pressure wheel 112 is connected to a clamping unit of the clamping jaw 102-1 via a connecting frame 113. When the spring pressure wheel 112 passes through the protrusions 104-2 and moves downward, it will pull the clamping unit through the connecting frame 113, causing the clamping jaw 102-1 to open. The protrusion 104-2 at the front bottom of the pressure wheel guide groove 104-1 enables the clamping jaw 102-1 to open, so that the clamping jaw 102-1 can be opened and clamped and connected to the main cable handrail rope 105. The protrusion 104-2 at the rear bottom of the pressure wheel guide groove 104-1 enables the clamping jaw 102-1 to open, so that the clamping jaw 102-1 can be opened and separated from the main cable handrail rope 105. The pressure wheel guide groove assembly 104 can realize that the clamp 102 automatically loosens and clamps the main cable handrail rope 105 during walking.

[0055] The compression spring 111 is connected between the connecting frame 113 and the mounting base of the clamping jaw 102-1. When the clamping jaw 102-1 clamps the main cable handrail rope 105, the compression spring 111 can provide a certain clamping force for the clamping jaw 102-1, ensuring sufficient friction between the clamping jaw 102-1 and the main cable handrail rope 105, so that the clamping jaw 102-1 can reliably clamp the main cable handrail rope 105 without slipping.

[0056] When the clamp 102 rotates to a position close to the main cable handrail 105, the shape of the pressure wheel guide groove 104-1 and the distance between the pressure wheel guide groove 104-1 and the clamp 102 will change. Under the action of the pressure wheel guide groove 104-1 and its protrusion 104-2, the spring pressure wheel 112 will drive the clamping jaw 102-1 to open and automatically clamp the wire rope. Conversely, when the clamp 102 rotates to a position away from the main cable handrail 105, as the shape of the guide groove of the guide wheel 109 changes, the clamping jaw 102-1 will automatically release the main cable handrail 105 under the drive of the spring pressure wheel 112. In addition, the clamping force of the clamping jaw 102-1 can also be adjusted by adjusting the distance between the pressure wheel guide groove 104-1 and the clamp 102.

[0057] In this embodiment, the main cable handrail rope 105 is a steel wire rope.

[0058] The annular motion belts 101 - 1 on both sides of the walking device can be driven coaxially by a reduction motor with dual output shafts, or can be driven independently and synchronously by two motors.

[0059] The main cable handrail running device of the present invention offers advantages such as continuous travel and the ability to pass directly through a handrail support. This device primarily utilizes a clamp 102 connected to the underside of a chain or synchronous belt to clamp the main cable handrail 105. The chain or synchronous belt then rotates, driving the clamp 102 attached thereto to alternately climb the main cable handrail 105. Relative motion between the vehicle frame 103 and the clamp 102 propels the vehicle forward, enabling uninterrupted travel along the main cable handrail 105. During travel, the vehicle does not come into contact with the main cable 107, ensuring that the protective layer and wrapping tape on the main cable 107 are not damaged. Furthermore, the running device can pass directly through a handrail clamp, eliminating the need for modification to the clamp.

[0060] The walking device can be equipped with a manned work platform for use as manned maintenance equipment, or only with intelligent detection equipment for use as an intelligent detection vehicle, which can realize the separation of inspection and maintenance operations, improve the inspection efficiency and frequency of the main cable and its ancillary facilities, and can also carry out regular and planned fixed-point maintenance for the detected defects, which is of great significance to the scientific maintenance of the main cable and its ancillary facilities.

[0061] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A main cable handrail rope running device capable of crossing a handrail rope support, characterized in that: It includes a clamp support assembly and a clamp, wherein the clamp support assembly is used to connect the vehicle frame; The clamp support assembly includes an endless moving belt that can circulate, and the clamp includes a plurality of clamping jaws that are connected to the endless moving belt at intervals. The clamping jaws are connected to a control mechanism that is used to control the opening and closing of the clamping jaws. When the clamping jaws rotate to the lower side of the endless moving belt, they can clamp on the main cable handrail rope. When the clamping jaws are about to leave the lower side of the endless moving belt, they can separate from the main cable handrail rope. The clamping jaw is connected to a guide wheel, which is located in an annular guide groove on the clamp support assembly. The shape of the annular guide groove is the same as that of the annular motion belt. The guide wheel rotates in the annular guide groove as the annular motion belt circulates. The clamping claw comprises two symmetrically arranged clamping units, with a clamping opening formed between the two clamping units for clamping the main cable handrail rope; The control mechanism includes a pressure wheel guide groove assembly, and the pressure wheel guide groove assembly is located inside the clamp support assembly; The pressure wheel guide groove assembly includes a pressure wheel guide groove, the bottoms of both sides of the pressure wheel guide groove protrude downward to form protrusions, a plurality of pressure wheels are installed in the pressure wheel guide groove, each of the pressure wheels is connected to a clamping unit of the clamping jaw through a connecting frame, and when the pressure wheel passes through the protrusion, the clamping unit is pulled to open the clamping jaw; A compression spring is connected between the connecting frame and the mounting seat of the clamping jaw, and the compression spring is used to provide a clamping force for the clamping jaw; A clamp support assembly is respectively arranged above the two main cable handrail ropes, and the clamp is connected to each clamp support assembly. A pressure wheel guide groove assembly is correspondingly arranged on the inner side of each clamp support assembly. The frame is located above the clamp support assembly and the pressure wheel guide groove assembly, and the clamp support assembly, the pressure wheel guide groove assembly and the frame are connected through a main shaft.

2. The main cable handrail rope walking device capable of crossing the handrail rope support according to claim 1, characterized in that: The endless moving belt is driven by a driving device to circulate.

3. The main cable handrail rope running device capable of crossing the handrail rope support according to claim 1, characterized in that: The endless motion belt adopts a chain or a synchronous belt.

4. The main cable handrail rope running device capable of crossing the handrail rope support according to claim 1, characterized in that: The annular motion belt is elliptical.

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