Bridge concrete guardrail maintenance trolley

Abstract

The utility model provides a bridge concrete guardrail maintenance trolley. The trolley mainly comprises a positioning structure and a bearing platform. The positioning structure is composed of a connecting platform, a first positioning frame and a second positioning frame, one end of the first positioning frame penetrates through the top side of the connecting platform, the other end of the first positioning frame extends to the bottom side, and one side of the first positioning frame is provided with an access hole communicated with the passage. Rolling structures are arranged on the bottom side of the connecting platform and the opposite sides of the first and second positioning frames. The bearing platform is located at the bottom opening of the passage. The maintenance trolley can be stably installed on a bridge concrete guardrail through the positioning structure. The passage provides a safe and convenient up-and-down passage for constructors, and the working efficiency is improved. The bearing platform provides a stable working space, the rolling structure enables the trolley to move easily, different repairing requirements are met, and the trolley is very suitable for repairing the outer side edge of a bridge side concrete guardrail.

Description

Technical Field

[0001] This utility model relates to the field of guardrail maintenance technology, and more specifically, to a bridge concrete guardrail maintenance trolley. Background Technology

[0002] Bridge concrete railings are protective structures made of cast concrete, installed on the sides or in the central median of bridges. Their main functions include preventing vehicles from leaving the bridge, protecting pedestrian safety, and separating traffic flows. Concrete railings typically have a certain height and strength to withstand the impact of vehicles. They are generally long and narrow, with cross-sections that can be rectangular, trapezoidal, or other shapes. The design considers the railing's aesthetics, durability, and harmony with the overall bridge structure. For example, on some highway bridges, concrete railings often feature textured or decorative lines, increasing both their strength and the overall aesthetic appeal of the bridge.

[0003] Concrete railings often encounter defects during the pouring process. Firstly, due to water bleeding in the concrete, small pits or air pockets may form on the surface. Secondly, grout leakage may occur at formwork joints, resulting in an uneven concrete surface. These defects negatively impact the appearance and durability of the railing, necessitating repair. Secondly, cracks may develop in the concrete during setting due to temperature changes and shrinkage. If these cracks are not repaired promptly, moisture and harmful substances will seep into the concrete, accelerating steel corrosion and reducing the railing's strength and lifespan. Furthermore, improper curing after pouring can lead to insufficient concrete strength, requiring repair to improve its strength and performance. Finally, accidental damage such as collisions and scratches during construction may occur, requiring repair to ensure the railing's integrity and safety.

[0004] In existing technologies, repairing the outer edge of concrete guardrails on bridge sides typically involves using a large crane and a suspended cage. First, the cage is suspended from the hook of the large crane, then the crane moves the cage to the outer edge of the concrete guardrail requiring repair. Workers then enter the cage to perform repair work on the outer edge of the concrete guardrail, such as filling cracks and repairing damaged surfaces. However, this method has several problems. Firstly, operating a large crane requires considerable space, making it difficult to maneuver in narrow construction sites, and the crane itself is costly. Secondly, workers in the cage face higher safety risks; crane malfunctions or cage swaying can threaten their lives. Furthermore, this method is heavily influenced by weather conditions, making it impossible to carry out repairs in strong winds or other severe weather. Utility Model Content

[0005] The purpose of this utility model is to provide a bridge concrete guardrail maintenance trolley, which aims to solve the technical problems in the background art mentioned above.

[0006] The embodiments of this utility model are implemented as follows:

[0007] This application provides a bridge concrete guardrail maintenance trolley, comprising: a positioning structure including a connecting platform, a first positioning frame, and a second positioning frame, both the first and second positioning frames being disposed on the bottom side of the connecting platform and spaced apart; the first positioning frame having a passageway, one end of which extends to the top side of the connecting platform and the other end to the bottom side of the first positioning frame; and a maintenance opening communicating with the passageway on the side of the first positioning frame facing the second positioning frame; wherein, the bottom side of the connecting platform and the two opposite sides of the first and second positioning frames are provided with rolling structures; and a bearing platform disposed at the bottom opening of the passageway.

[0008] Furthermore, based on the aforementioned scheme, the aforementioned rolling structure includes a connector detachably disposed on the aforementioned connecting platform, the aforementioned first positioning frame, or the aforementioned second positioning frame, and two omnidirectional wheels are spaced apart on the side of the connector away from the aforementioned connecting platform, the aforementioned first positioning frame, or the aforementioned second positioning frame.

[0009] Furthermore, based on the aforementioned scheme, the connector is provided with two connecting screws, and each of the connecting screws is threadedly fitted with two locking nuts, which are respectively located on both sides of the connector;

[0010] The two aforementioned casters are respectively mounted on the two aforementioned connecting screws.

[0011] Furthermore, based on the aforementioned scheme, a climbing staircase is provided on the side of the second positioning frame away from the first positioning frame.

[0012] Furthermore, based on the aforementioned scheme, the top of the second positioning frame is rotatably connected to the aforementioned connecting platform;

[0013] The aforementioned connecting platform is equipped with a positioning structure for positioning the second positioning frame relative to the connecting platform after rotation.

[0014] Furthermore, based on the aforementioned scheme, the top of the second positioning frame is connected to the connecting platform via a first bolt group.

[0015] Furthermore, based on the aforementioned scheme, the positioning structure includes a connecting piece, a second bolt group, and a third bolt group. One end of the connecting piece is connected to the connecting platform via the second bolt group, and the other end of the connecting piece is connected to the second positioning frame via the third bolt group.

[0016] The connecting piece is also provided with a strip-shaped hole to accommodate the sliding of the third bolt group.

[0017] Furthermore, based on the aforementioned solution, a protective railing is installed on the upper side of the connecting platform.

[0018] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:

[0019] When repairing the outer side of a bridge's side concrete guardrail, the maintenance trolley of this application places the connecting platform on top of the guardrail, positioning the first positioning frame on the outside and the second positioning frame on the inside of the guardrail. This clamping of the guardrail by the positioning structure ensures stable installation. Workers can access the bottom support platform from the top of the connecting platform via a passageway, and then perform repair work on the outer side of the guardrail through the inspection port, such as filling cracks and repairing damaged surfaces. The advantages of this maintenance trolley lie in its rational structural design. The positioning structure ensures the trolley moves and stops stably on the guardrail. The passageway provides a safe and convenient access for workers, effectively improving work efficiency. The support platform provides a stable working space, facilitating various repair operations. The rolling structure allows the trolley to move easily along the guardrail, adapting to repair needs at different locations. Furthermore, compared to traditional large cranes and suspended platforms, this maintenance trolley offers significant advantages. On the one hand, traditional methods require large cranes for operation, occupying a significant amount of space. This maintenance trolley, however, requires less space and can be used flexibly even in narrow construction sites, adapting to various construction environments. It also reduces equipment operating costs. On the other hand, workers in traditional suspended platforms face higher safety risks, such as crane malfunctions and platform swaying. This maintenance trolley is more stable, reducing safety hazards. Furthermore, traditional methods are heavily influenced by weather conditions, making construction impossible in strong winds or other severe weather. This maintenance trolley is less affected by weather, improving the reliability and continuity of construction operations. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 An axonometric measurement of a bridge concrete guardrail maintenance trolley is provided as an embodiment of this utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the rolling structure according to an embodiment of the present invention;

[0023] Figure 3 This is a side view of a bridge concrete guardrail maintenance trolley according to an embodiment of the present utility model;

[0024] Figure 4 An axonometric measurement of a bridge concrete guardrail maintenance trolley is provided as an embodiment of this utility model. Figure 2 .

[0025] Icons: 1-Bearing platform, 2-First positioning frame, 3-Inspection port, 4-Wheel caster, 5-Connecting platform, 6-Guard railing, 7-Second positioning frame, 8-Climbing stairs, 9-Connecting piece, 10-Strip hole, 11-Connecting screw, 12-Locking nut, 13-Connecting piece. Detailed Implementation

[0026] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0027] Example

[0028] Please refer to Figures 1-4 This application provides a bridge concrete guardrail maintenance trolley, comprising: a positioning structure including a connecting platform 5, a first positioning frame 2, and a second positioning frame 7. The first positioning frame 2 and the second positioning frame 7 are both disposed on the bottom side of the connecting platform 5, and the first positioning frame 2 and the second positioning frame 7 are spaced apart. The first positioning frame 2 is provided with a passageway, one end of which extends to the top side of the connecting platform 5, and the other end extends to the bottom side of the first positioning frame 2. The side of the first positioning frame 2 facing the second positioning frame 7 is also provided with a maintenance opening 3 connecting to the passageway. Rolling structures are provided on the bottom side of the connecting platform 5 and on the two sides opposite to the first positioning frame 2 and the second positioning frame 7. A bearing platform 1 is disposed at the bottom opening of the passageway.

[0029] When repairing the outer side of a bridge's side concrete guardrail, the maintenance trolley of this application places the connecting platform 5 on top of the guardrail, positioning the first positioning frame 2 on the outer side and the second positioning frame 7 on the inner side. This clamps the guardrail with positioning structures, ensuring stable installation. Workers can access the bottom support platform 1 from the top of the connecting platform 5 via a passageway, and then perform repairs on the outer side of the guardrail through the inspection port 3, such as filling cracks and repairing damaged surfaces. The advantages of this maintenance trolley lie in its reasonable structural design; the positioning structure ensures stable movement and stopping of the trolley on the guardrail. The passageway provides a safe and convenient access for workers, effectively improving work efficiency. The support platform 1 provides a stable working space, facilitating various repair operations. The rolling structure allows the trolley to easily move along the guardrail, adapting to repair needs at different locations. Furthermore, compared to traditional large cranes and suspended platforms, this maintenance trolley offers significant advantages. On the one hand, traditional methods require large cranes for operation, occupying a significant amount of space. This maintenance trolley, however, requires less space and can be used flexibly even in narrow construction sites, adapting to various construction environments. It also reduces equipment operating costs. On the other hand, workers in traditional suspended platforms face higher safety risks, such as crane malfunctions and platform swaying. This maintenance trolley is more stable, reducing safety hazards. Furthermore, traditional methods are heavily influenced by weather conditions, making construction impossible in strong winds or other severe weather. This maintenance trolley is less affected by weather, improving the reliability and continuity of construction operations.

[0030] Specifically, the number of inspection ports 3 mentioned above is multiple, increasing operational flexibility. Construction personnel can select different inspection ports 3 for work according to actual needs, which can better adapt to the repair needs of different parts and allow for more flexible operation on complex situations on the outside of the guardrail.

[0031] In a preferred embodiment, the rolling structure includes a connector 13 detachably disposed on the connecting platform 5, the first positioning frame 2, or the second positioning frame 7, and two casters 4 are spaced apart on the side of the connector 13 away from the connecting platform 5, the first positioning frame 2, or the second positioning frame 7.

[0032] In the above embodiments, the detachable design of the connector 13 facilitates the maintenance and replacement of the rolling structure, thereby greatly improving the service life of the maintenance trolley. Secondly, the spaced arrangement of the two casters 4 effectively ensures the stability of the trolley during movement. The casters 4 can flexibly change direction, allowing the trolley to easily move along the bridge's concrete railing, perfectly adapting to different construction positions and angles. Furthermore, the support force distribution of the two casters 4 is more even, significantly reducing the risk of swaying and tilting of the trolley during movement.

[0033] In a preferred embodiment, the connector 13 is provided with two connecting screws 11, and each of the connecting screws 11 is threadedly fitted with two locking nuts 12, which are located on both sides of the connector 13 respectively.

[0034] The two casters 4 are respectively mounted on the two connecting screws 11.

[0035] In the above embodiments, the first positioning frame 2, the second positioning frame 7, and the connecting platform 5 are all provided with connecting holes for the connecting screws 11. This design not only facilitates the installation of the casters 4, but also allows for adjustment of the distance between the casters 4 and the connecting parts 13. This better adapts to different road conditions and construction needs, improving the stability and flexibility of the maintenance trolley.

[0036] In a preferred embodiment, the second positioning frame 7 is provided with a climbing staircase 8 on the side away from the first positioning frame 2.

[0037] In the above embodiment, the inclusion of a climbing staircase 8 on the second positioning frame 7 offers several advantages. First, it provides a more convenient access route for construction personnel. They can directly reach the connecting platform 5 via the climbing staircase 8 without the need for other auxiliary tools, thus improving work efficiency. Second, it enhances safety. Compared to other access methods, the climbing staircase 8 is more stable and reliable, reducing the risk of accidents for construction personnel during ascent and descent. Furthermore, the climbing staircase 8 makes the entire maintenance trolley more user-friendly, facilitating operation and maintenance by personnel at different heights.

[0038] In a preferred embodiment, the top of the second positioning frame 7 is rotatably connected to the connecting platform 5.

[0039] The connecting platform 5 is equipped with a positioning structure for positioning the second positioning frame 7 relative to the connecting platform 5 after rotation.

[0040] In the above embodiment, firstly, the rotatable connection between the top of the second positioning frame 7 and the connecting platform 5 makes the installation and disassembly of the maintenance trolley more flexible and convenient. The angle of the second positioning frame 7 can be adjusted according to the actual situation, making it easier to place the trolley on bridge concrete guardrails of different shapes and sizes, thus improving its applicability. Secondly, the positioning structure of the connecting platform 5 can accurately position the trolley after the second positioning frame 7 rotates, ensuring the stability and safety of the trolley during operation. This prevents the second positioning frame 7 from rotating accidentally during use, ensuring the safety of construction personnel. Finally, this design structure is simple, practical, and easy to operate, meeting the actual needs of repairing the outer side of the bridge side concrete guardrail and improving construction efficiency.

[0041] In a preferred embodiment, the top of the second positioning frame 7 is connected to the connecting platform 5 by a first bolt group.

[0042] In the above embodiments, the connection method of the first bolt group has significant advantages. On the one hand, it is firm and reliable, effectively ensuring the connection strength between the second positioning frame 7 and the connecting platform 5, and even if the maintenance trolley is subjected to certain external forces during use, it can effectively guarantee the stability of the overall structure. At the same time, this connection method can also adjust the relative rotation of the second positioning frame 7 and the connecting platform 5 to adapt to different construction needs. On the other hand, the bolt connection is easy to install and disassemble. When the maintenance trolley needs to be transported, stored, or repaired, the second positioning frame 7 can be easily separated from the connecting platform 5, thereby greatly improving the convenience of operation.

[0043] In a preferred embodiment, the positioning structure includes a connecting piece 9, a second bolt group, and a third bolt group. One end of the connecting piece 9 is connected to the connecting platform 5 via the second bolt group, and the other end of the connecting piece 9 is connected to the second positioning frame 7 via the third bolt group.

[0044] The connecting piece 9 is also provided with a strip hole 10 to accommodate the sliding of the third bolt group.

[0045] In the above embodiments, the positioning structure has excellent performance. First, the connecting piece 9 is connected to the connecting platform 5 via a second bolt group and to the second positioning frame 7 via a third bolt group. This multi-bolt connection method ensures the stability of the connection and reliably fixes the relative position of the second positioning frame 7 and the connecting platform 5 during the use of the maintenance trolley. Second, the strip-shaped hole 10 provided on the connecting piece 9 can accommodate the sliding of the third bolt group. This allows for flexible adjustment of the angle and position of the second positioning frame 7 relative to the connecting platform 5 according to actual needs during installation and adjustment, improving the adaptability of the maintenance trolley to different shapes and sizes of bridge concrete guardrails. Simultaneously, this design also facilitates fine-tuning during use, ensuring the stability and safety of the trolley.

[0046] As a preferred implementation method, a protective railing 6 is provided on the upper side of the connecting platform 5.

[0047] In the above embodiment, the guardrail 6 provides important safety protection for construction workers moving on the connecting platform 5. When construction workers are preparing for work or walking on the connecting platform 5, the guardrail 6 can effectively prevent accidental falls, greatly reducing safety risks during the construction process.

[0048] Furthermore, unless otherwise explicitly specified or limited, the terms "installation" and "connection" in this application embodiment should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "upper," "lower," "left," "right," "inner," "outer," and "side," etc., are merely for reference to the direction in the accompanying drawings or the usual placement of the product during use. They are only for clearly describing this application and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this application. The terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance; "multiple" refers to at least two. In this application embodiment, the limitations on relative positional relationships such as parallel, perpendicular, and aligned are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallel, perpendicular, and aligned are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.

[0049] The above are only some embodiments and implementation methods of this application. The protection scope of this application is not limited thereto. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Any combination of features in different embodiments is also within the protection scope of this application. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A bridge concrete guardrail maintenance trolley, characterized in that, include: The positioning structure includes a connecting platform (5), a first positioning frame (2) and a second positioning frame (7). The first positioning frame (2) and the second positioning frame (7) are both located on the bottom side of the connecting platform (5) and are spaced apart. The first positioning frame (2) is provided with a passageway. One end of the passageway extends to the top side of the connecting platform (5) and the other end extends to the bottom side of the first positioning frame (2). The side of the first positioning frame (2) facing the second positioning frame (7) is also provided with an inspection port (3) that connects to the passageway. Rolling structures are provided on the bottom side of the connecting platform (5) and on the two sides opposite to the first positioning frame (2) and the second positioning frame (7); The carrying platform (1) is located at the bottom opening of the passageway.

2. The bridge concrete guardrail maintenance trolley according to claim 1, characterized in that, The rolling structure includes a connector (13) detachably disposed on the connecting platform (5), the first positioning frame (2) or the second positioning frame (7), and two casters (4) are spaced apart on the side of the connector (13) away from the connecting platform (5), the first positioning frame (2) or the second positioning frame (7).

3. The bridge concrete guardrail maintenance trolley according to claim 2, characterized in that, The connector (13) is provided with two connecting screws (11), and each of the connecting screws (11) is threaded with two locking nuts (12), which are located on both sides of the connector (13); The two casters (4) are respectively mounted on the two connecting screws (11).

4. A bridge concrete guardrail maintenance trolley according to claim 1, characterized in that, The second positioning frame (7) has a climbing staircase (8) on its side away from the first positioning frame (2).

5. A bridge concrete guardrail maintenance trolley according to claim 1, characterized in that, The top of the second positioning frame (7) is rotatably connected to the connecting platform (5); The connecting platform (5) is provided with a positioning structure for positioning the second positioning frame (7) after it rotates relative to the connecting platform (5).

6. A bridge concrete guardrail maintenance trolley according to claim 5, characterized in that, The top of the second positioning frame (7) is connected to the connecting platform (5) by a first set of bolts.

7. A bridge concrete guardrail maintenance trolley according to claim 6, characterized in that, The positioning structure includes a connecting piece (9), a second bolt group, and a third bolt group. One end of the connecting piece (9) is connected to the connecting platform (5) through the second bolt group, and the other end of the connecting piece (9) is connected to the second positioning frame (7) through the third bolt group. The connecting piece (9) is also provided with a strip hole (10) to accommodate the sliding of the third bolt group.

8. A bridge concrete guardrail maintenance trolley according to claim 1, characterized in that, A guardrail (6) is provided on the upper side of the connecting platform (5).

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