Self-propelled suspension bridge girder maintenance trolley

Abstract

The utility model relates to a self-propelled suspension bridge girder maintenance trolley which comprises an operation platform, a suspension system and a pair of track beams, the suspension system comprises a plurality of pairs of suspension mechanisms, the upper ends of the suspension mechanisms located on the same side of a suspension bridge are attached to the girders on the same side of the suspension bridge, and the lower ends of the suspension mechanisms are connected with the track beams on the same side. And the suspension mechanism and the track beam can move relatively. The working platform is connected with the pair of track beams, the working platform and the pair of track beams can move relatively, and the working platform is connected with at least two pairs of suspension mechanisms. Operation and maintenance work within the coverage range can be completed on the work platform, and the bridge bottom face maintenance work function is achieved. The suspension system comprises a plurality of pairs of suspension mechanisms and has large safety redundancy, and the situation that the maintenance car falls off from the bridge is eradicated. The self-propelled suspension bridge girder maintenance trolley walks along the suspension bridge, and operation and maintenance work on a girder steel structure and a bottom face structure of the whole suspension bridge is achieved.

Description

Technical Field

[0001] This utility model relates to the field of bridge maintenance equipment technology, and in particular to a self-propelled suspension bridge main beam maintenance trolley. Background Technology

[0002] A suspension bridge, also known as a suspension bridge, is a bridge that uses cables (or other similar structures) as its main load-bearing component. Numerous suspenders hang from the cables, supporting the bridge deck. A main girder is often installed between the bridge deck and the suspenders, forming a combined system with the cables. Its reasonable span can reach hundreds or even thousands of meters. Based on the type of traffic crossing the bridge, it can be classified as a highway suspension bridge, railway suspension bridge, or pedestrian suspension bridge. Due to its superior spanning capacity, suspension bridges are often used to cross rivers and valleys. To reduce its weight, the main girder is typically made of steel. With the increasing number of suspension bridges in operation, the main girder steel structure and the underside of suspension bridges require regular inspection and painting, and the cables also need regular tension testing and adjustment. However, most suspension bridges are located over rivers or valleys, and the main steel structure and bottom structure of suspension bridges cannot be maintained and repaired using traditional ground maintenance vehicles. In addition, existing boom bridge maintenance vehicles need to travel on the bridge deck, occupying the bridge surface and affecting the normal passage of vehicles. Furthermore, due to the limited boom length, boom bridge maintenance vehicles cannot perform maintenance and repair on the entire bottom structure of the suspension bridge. As a result, the difficulties in the maintenance and repair of suspension bridges are becoming increasingly prominent. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a self-propelled suspension bridge main girder maintenance trolley.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the self-propelled suspension bridge main girder maintenance trolley of this utility model includes a working platform, a suspension system located within the working platform, and a pair of track beams, wherein the pair of track beams are arranged opposite to each other and parallel to the main girder of the suspension bridge.

[0007] The suspension system includes multiple pairs of suspension mechanisms. The upper end of the suspension mechanism located on the same side of the suspension bridge is attached to the main beam on the same side of the suspension bridge, and the lower end is connected to the track beam on the same side. The suspension mechanism and the track beam can move relative to each other.

[0008] The working platform is connected to the pair of track beams, and the working platform and the pair of track beams are capable of relative movement. The working platform is detachably connected to at least two of the multiple pairs of suspension mechanisms.

[0009] Optionally, the suspension mechanism includes outriggers, a locking assembly, and a first walking assembly;

[0010] The locking component is connected to the upper end of the outrigger, and the first walking component is connected to the lower end of the outrigger.

[0011] The locking component is detachably connected to the main beam of the suspension bridge, the first traveling component is connected to the track beam, and the first traveling component is capable of moving along the length of the track beam.

[0012] Optionally, the track beam is provided with a travel groove;

[0013] The first walking component includes a drive unit and multiple pairs of rollers, all of which are disposed within the walking groove. The drive unit is connected to at least one pair of the multiple pairs of rollers to drive the rollers to rotate.

[0014] Optionally, a travel groove is provided on the track beam, and a rack is provided in the travel groove along the length direction of the track beam;

[0015] The first walking component includes a drive unit, a drive gear, and multiple pairs of rollers, all of which are disposed within the walking groove; the drive unit is connected to the drive gear, and the gear meshes with the rack.

[0016] Optionally, the outrigger includes a fixed part and a telescopic part, the telescopic part is slidably connected to the fixed part, and a fixing component is provided between the fixed part and the telescopic part, the fixing component being configured to fix the current position of the telescopic part;

[0017] The lower end of the fixed part is connected to the first walking component, and the upper end of the telescopic part is connected to the locking component.

[0018] Optionally, the locking component is a clip-on structure.

[0019] Optionally, the work platform is connected to the pair of track beams via a second traveling assembly.

[0020] Optionally, the self-propelled suspension bridge main girder maintenance trolley also includes multiple safety ropes, one end of which is connected to the work platform, and the other end of which is detachably connected to the suspension bridge.

[0021] Optionally, the suspension system includes four pairs of suspension mechanisms.

[0022] (III) Beneficial Effects

[0023] The self-propelled suspension bridge main girder maintenance trolley includes a work platform, a suspension system, and a pair of track beams. The suspension system and track beams are all located inside the work platform, connected to form a suspended structure. Maintenance personnel can complete the operation and maintenance work of the suspension bridge within the coverage area of ​​the work platform from the platform itself. It is applicable to various terrain conditions, simplifying the work process and improving work efficiency. At the same time, it avoids the situation where the self-propelled suspension bridge main girder maintenance trolley occupies the bridge deck.

[0024] The suspension system includes multiple pairs of suspension mechanisms, providing significant safety redundancy and preventing the maintenance vehicle from falling off the bridge.

[0025] The self-propelled suspension bridge main girder maintenance trolley travels along the suspension bridge to carry out operation and maintenance work on the main girder steel structure and bottom structure of the entire suspension bridge. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of the self-propelled suspension bridge main beam maintenance trolley of this utility model.

[0027] Figure 2 This is a schematic diagram showing the state of the self-propelled suspension bridge main beam maintenance trolley after the first leg has been moved.

[0028] Figure 3 This is a schematic diagram showing the state of the self-propelled suspension bridge main beam maintenance trolley after the second leg has been moved.

[0029] Figure 4 This is a schematic diagram showing the state of the working platform of the self-propelled suspension bridge main beam maintenance trolley after it has been moved.

[0030] Figure 5 This is a schematic diagram showing the state of the third leg of the self-propelled suspension bridge main beam maintenance trolley after it has been moved.

[0031] Figure 6 This is a schematic diagram showing the state of the fourth leg of the self-propelled suspension bridge main beam maintenance trolley after it has been moved.

[0032] Figure 7 This is a schematic diagram showing the state of the track beam of the self-propelled suspension bridge main girder maintenance trolley after it has been moved.

[0033] [Explanation of Labels in the Attached Image]

[0034] 1: Working platform; 2: Track beam; 3: Suspension mechanism; 31: First outrigger; 32: Second outrigger; 33: Third outrigger; 34: Fourth outrigger; 4: Safety rope; 5: Bridge railing; 6: Main beam. Detailed Implementation

[0035] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," etc., are used interchangeably with other directional terms. Figure 1 The orientation is used as a reference.

[0036] While exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0037] like Figure 1 As shown, this utility model provides a self-propelled suspension bridge main girder maintenance trolley, which is suspended below the main girder 6 of the suspension bridge to inspect and paint the entire steel structure and bottom surface of the main girder 6 of the suspension bridge.

[0038] The self-propelled suspension bridge main girder maintenance trolley includes a working platform 1, a suspension system, and a pair of track beams 2. The working platform 1 is made of steel to reduce its weight. Located beneath the suspension bridge and extending from both sides of the bridge deck, the working platform 1 houses the suspension system and the pair of track beams 2, forming a suspended structure. Maintenance personnel can perform maintenance work on the suspension bridge within the coverage area of ​​the working platform 1 from its position. This system is applicable to various terrain conditions, simplifying the work process and improving efficiency. It also avoids the trolley occupying the bridge deck. The pair of track beams 2 are positioned opposite each other and parallel to the main girder 6 of the suspension bridge. The first track beam 2 is located directly below the first side of the main girder 6, and the second track beam 2 is located directly below the second side of the main girder 6. The suspension system includes multiple pairs of suspension mechanisms 3. The upper ends of the multiple suspension mechanisms 3 located on the first side of the suspension bridge are all attached to the main beam 6 on the first side of the suspension bridge, and the upper ends of the multiple suspension mechanisms 3 located on the second side of the suspension bridge are also attached to the main beam 6 on the second side of the suspension bridge. These multiple pairs of suspension mechanisms 3 provide significant safety redundancy, preventing the maintenance vehicle from falling off the bridge. The lower ends of the suspension mechanisms 3 are connected to the track beam 2 on the same side, allowing relative movement between the suspension mechanisms 3 and the track beam 2. The working platform 1 is connected to a pair of track beams 2, and relative movement is possible between the working platform 1 and the pair of track beams 2. The working platform 1 is detachably connected to at least two pairs of the multiple pairs of suspension mechanisms 3. When the work platform 1 needs to be moved, the upper end of the suspension mechanism 3 near the front end of the work platform 1 separates from the main beam 6 of the suspension bridge and moves a set distance along the working direction; the work platform 1 then moves a set distance along the working direction, and the remaining unmoved suspension mechanism 3 and the track beam 2 move sequentially or synchronously a set distance, completing the movement of the entire self-propelled suspension bridge main beam maintenance trolley. The movement of the self-propelled suspension bridge main beam maintenance trolley along the length of the suspension bridge enables the operation and maintenance of the entire main beam 6 steel structure and bottom structure of the suspension bridge.

[0039] The suspension mechanism 3 includes outriggers, a locking assembly, and a first traveling assembly. The locking assembly is connected to the upper end of the outrigger, and the first traveling assembly is connected to the lower end of the outrigger. The upper end of the outrigger is detachably connected to the main beam 6 of the suspension bridge via the locking assembly, forming a stable connection structure. The lower end of the outrigger is connected to the track beam 2 via the first traveling assembly, which can move along the length of the track beam 2. When the outrigger needs to move, the connection between the locking assembly and the main beam 6 is first released, and the outrigger is driven to move via the first traveling assembly. Furthermore, utilizing the relativity of motion, when the upper end of the outrigger is locked, the first traveling assembly also drives the track beam 2 to move.

[0040] In Embodiment 1, a traveling groove is provided on the track beam 2. The first traveling component includes a drive unit and multiple pairs of rollers. The drive unit can be a conventional gear rocker, motor, or other drive device, which is not limited here. All pairs of rollers are disposed within the traveling groove, which is I-shaped. The rollers can only move along the extension direction of the traveling groove and cannot detach from it, ensuring that the lower end of the outrigger is always connected to the track beam 2 while maintaining relative movement. The drive unit is connected to at least one pair of rollers to drive the rollers to rotate. The friction between the rollers and the inner wall of the traveling groove enables the outrigger or track beam 2 to travel.

[0041] In embodiment two, a traveling groove is provided on the track beam 2. The traveling groove is I-shaped, and a rack is arranged inside the traveling groove along the length direction of the track beam 2. The first traveling component includes a drive unit, a drive gear, and multiple pairs of rollers. The drive unit can be a conventional gear rocker, motor, or other drive device, which is not limited here. The multiple pairs of rollers are all arranged in the traveling groove. The rollers can only move along the extension direction of the traveling groove and cannot disengage from the traveling groove, ensuring that the lower end of the outrigger is always connected to the track beam 2 while being able to move relative to it. The drive unit is connected to the drive gear, and the gear meshes with the rack. The drive unit drives the outrigger or the track beam 2 to travel through the gear. In a preferred embodiment, a worm gear and rack structure is used to achieve a self-locking function at the lower end of the outrigger.

[0042] The outrigger includes a fixed part and a telescopic part, which are slidably connected to the fixed part. A fixing component is provided between the fixed part and the telescopic part to fix the current position of the telescopic part. The telescopic part changes the length of the outrigger through vertical movement. The lower end of the fixed part is connected to the first traveling component, and the upper end of the telescopic part is connected to the locking component. When encountering an obstacle under the beam, the outrigger retracts through the telescopic part, preventing the outrigger from touching the obstacle during travel.

[0043] The locking component can be a clamp-type structure or other structures with locking function, and can be clamped or released by a hydraulic system or motor drive.

[0044] The working platform 1 is connected to the pair of track beams 2 through the second traveling assembly. The mechanism of the second traveling assembly is the same as that of the first traveling assembly, and will not be described in detail here.

[0045] The self-propelled suspension bridge main girder maintenance trolley also includes multiple safety ropes 4. One end of each safety rope 4 is connected to the work platform 1, and the other end is detachably connected to the suspension bridge. Specifically, the upper end of each safety rope 4 is fixed to the bridge railing 5 or other stable structure via a locking buckle, and the lower end is fixed to the bottom surface of the work platform 1. Generally, four sets of safety ropes 4 are used. The safety ropes 4 are a passive fall protection structure. Even in the extreme case of failure of all outriggers, the safety ropes 4 can ensure that the maintenance trolley will not fall off the bridge, further increasing the safety redundancy.

[0046] The suspension system preferably includes four pairs of suspension mechanisms 3. Taking four pairs of suspension mechanisms 3 as an example, the specific implementation method of moving the maintenance trolley is explained as follows:

[0047] See Figures 1 to 7 The following description uses the movement of a single-sided suspension mechanism 3, with the opposite-sided suspension mechanism 3 moving synchronously. When the maintenance trolley is ready to move forward, the upper clamping structure of the first support leg 31 is released, the lower first traveling assembly of the first support leg 31 is released, and the connection between the work platform 1 and the first support leg 31 is disconnected. The first support leg 31 is driven forward on the track beam 2 via the drive assembly. After reaching its destination, the lower first traveling assembly of the first support leg 31 is fixed, and the clamping structure of the upper part of the first support leg 31 is clamped and fixed to the main beam 6. The second support leg 32 is controlled to move forward, using the same method as the first support leg 31. The second traveling assembly between the work platform 1 and the track beam 2 is released, and the connection between the work platform 1 and the third support leg 33 or the fourth support leg 34 is disconnected. The work platform 1 is driven forward via the drive assembly. After reaching its destination, the second traveling assembly is fixed, and the work platform 1 is connected to the first support leg 31 or the second support leg 32. Simultaneously, safety rope 4 releases its buckle and moves forward with the work platform 1. Once in position, the rope end buckle is secured. The third leg 33 and fourth leg 34 are then moved forward using the same method as the first leg 31. The first and second travel components are released, driving the track beam 2 forward. Once in position, the track beam 2 is secured, and maintenance work commences. After the previous maintenance work is completed, the above steps are repeated to move the maintenance trolley forward for the next maintenance operation. After all maintenance work is completed, the maintenance trolley returns to the bridge starting point via the original route for disassembly and storage. Alternatively, it can be disassembled and stored directly at the bridge end point for future maintenance work.

[0048] The self-propelled maintenance trolley provided by this utility model is applicable to suspension bridge maintenance operations in various terrain conditions. It features automatic travel capability, can cover the entire length of the bridge, and incorporates both active and passive fall prevention measures, eliminating the risk of falls and providing high safety redundancy. This utility model is of great significance for improving the technical level of existing bridge operation and maintenance operations and reducing the safety risks of maintenance work.

[0049] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0051] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A self-propelled catenary bridge girder inspection trolley, characterized by, The self-propelled suspension bridge main girder inspection trolley comprises a working platform (1) and a pair of track beams (2) in the working platform (1), and the pair of track beams (2) are oppositely arranged and parallel to the main girder (6) of the suspension bridge. The suspension system comprises a plurality of pairs of suspension mechanisms (3), the upper ends of the suspension mechanisms (3) on the same side of the suspension bridge are attached to the main girder (6) on the same side of the suspension bridge, the lower ends are connected to the track beams (2) on the same side, and the suspension mechanisms (3) and the track beams (2) can move relative to each other. The working platform (1) is connected to the pair of track beams (2), and the working platform (1) and the pair of track beams (2) can move relative to each other, and the working platform (1) is detachably connected to at least two pairs of the plurality of pairs of suspension mechanisms (3).

2. The self-propelled inspection trolley for a suspension bridge main girder according to claim 1, wherein The suspension mechanism (3) comprises a supporting leg, a locking assembly and a first walking assembly. The locking assembly is connected to the upper end of the supporting leg, and the first walking assembly is connected to the lower end of the supporting leg. The locking assembly is detachably connected to the main girder (6) of the suspension bridge, the first walking assembly is connected to the track beam (2), and the first walking assembly can move along the length direction of the track beam (2).

3. The self-propelled inspection trolley for a suspension bridge main girder according to claim 2, characterized in that, The track beam (2) is provided with a walking groove. The first walking assembly comprises a driving unit and a plurality of pairs of rollers, and the plurality of pairs of rollers are arranged in the walking groove, and the driving unit is connected to at least one pair of the plurality of pairs of rollers to drive the rollers to rotate.

4. The self-propelled inspection trolley for a suspension bridge main girder according to claim 2, wherein The track beam (2) is provided with a walking groove, and a rack is arranged in the walking groove along the length direction of the track beam (2). The first walking assembly comprises a driving unit, a driving gear and a plurality of pairs of rollers, and the plurality of pairs of rollers are arranged in the walking groove; the driving unit is connected to the driving gear, and the gear is engaged with the rack.

5. The self-propelled catenary inspection vehicle according to claim 3 or 4, characterized in that The supporting leg comprises a fixed part and an extension part, the extension part is slidingly connected to the fixed part, a fixing assembly is arranged between the fixed part and the extension part, and the fixing assembly is arranged to fix the current position of the extension part. The lower end of the fixed part is connected to the first walking assembly, and the upper end of the extension part is connected to the locking assembly.

6. The self-propelled catenary inspection vehicle according to claim 3 or 4, characterized in that The locking assembly is in a clamping piece type structure.

7. The self-propelled inspection trolley for a suspension bridge main span according to claim 2, wherein The working platform (1) and the pair of track beams (2) are connected through a second walking assembly.

8. The self-propelled inspection trolley for a suspension bridge main span according to claim 1, wherein The self-propelled suspension bridge main girder inspection trolley further comprises a plurality of safety ropes (4), one end of the plurality of safety ropes (4) is connected to the working platform (1), and the other end is detachably connected to the suspension bridge.

9. The self-propelled catenary inspection vehicle of claim 1, wherein, The suspension system comprises four pairs of suspension mechanisms (3).

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