Construction access maintenance operation bridge construction safety protection

Abstract

The utility model relates to bridge construction safety protection technical field, concretely is a kind of construction access maintenance operation bridge construction safety protection, the device includes construction platform, guardrail fixedly connected on construction platform, the periphery of construction platform is provided with anti-falling net, the outer edge of construction platform is continuously provided with multiple brackets, and the anti-falling net is fixedly connected on bracket.The device can be set up anti-falling net and bracket by the periphery of construction platform, anti-falling net can effectively catch the personnel or falling tool of inadvertently falling, avoid personnel injury and tool to hit the personnel and instrument under platform;The bracket of the device can rotate with anti-falling net, facilitate personnel to check and maintain anti-falling net;Meanwhile, it can also reduce the area occupied by device, facilitate the transportation of the device.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction safety protection technology, specifically to a bridge construction safety protection method for maintenance of temporary access roads. Background Technology

[0002] Bridge cap beams are crucial load-bearing components located atop bridge piers. Their primary function is to support the bridge superstructure, such as the main beams and deck system, transferring the loads of the superstructure to the piers and foundations. During bridge cap beam construction, workers perform tasks such as rebar tying, formwork installation, and concrete pouring on elevated construction platforms. Due to the high-altitude and open-air nature of the construction environment, there are risks of workers falling from the platform and tools, materials, and other items falling and injuring personnel or equipment below.

[0003] Traditional safety measures for bridge cap beam construction often rely on single guardrails. These guardrails are typically installed around the perimeter of the construction platform, forming a rigid barrier with posts and crossbars to prevent personnel and objects from falling. However, this single-guardrail approach has significant drawbacks. Firstly, the height and strength of the guardrails are limited. If workers collide with the guardrails due to operational errors or loss of balance, the guardrails may deform or even collapse, failing to effectively prevent falls. Secondly, guardrails cannot completely intercept tools, small materials, or other items that accidentally fall during construction. These items may fall through gaps in the guardrails, posing a safety hazard to personnel and equipment below. Utility Model Content

[0004] To address the problems of the prior art, this utility model provides a safety protection system for bridge construction during the maintenance of a construction access road. By installing a fall protection net and brackets around the construction platform, the fall protection net can effectively catch personnel or tools that accidentally fall, preventing injuries to personnel and tools from hitting personnel and equipment below the platform.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a safety protection system for bridge construction during the maintenance of a construction access road, comprising a construction platform, a guardrail fixedly connected to the construction platform, an anti-fall net installed around the perimeter of the construction platform, and multiple brackets continuously installed along the outer edge of the construction platform, with the anti-fall net fixedly connected to the brackets.

[0006] With the above structural design, the guardrail provides circumferential fall protection for personnel on the construction platform, while the fall protection net covers the perimeter of the platform, forming a dual protection of "blocking from above and preventing falls from below," thus solving the shortcomings of traditional single protection measures. The brackets provide fixed support for the fall protection net, preventing it from swaying or falling off due to its own weight or external forces (such as wind or impact), ensuring the continuous effectiveness of the protection function. The multiple brackets set up continuously can evenly distribute the tension of the fall protection net, adapting to construction platforms of different lengths, and are especially suitable for the protection needs of narrow working areas in bridge construction.

[0007] Preferably, the fall protection net is arranged around the circumference of the construction platform, with a first side rope fixedly connected to the inner edge of the fall protection net and a second side rope fixedly connected to the outer edge of the fall protection net.

[0008] With the above structural design, the first and second side ropes serve as the "skeleton" of the fall protection net, which can distribute local impact force to the entire edge, preventing the net edge from tearing due to concentrated force.

[0009] Preferably, a first fixing rope is threaded through the first end of the bracket, and both ends of the first fixing rope are fixedly connected to a first side rope; a second fixing rope is threaded through the tail end of the bracket, and both ends of the second fixing rope are fixedly connected to a second side rope.

[0010] The above structural design, with its multi-point connection (rather than single-point fixation) between the fixing rope and the side rope, avoids displacement of the safety net caused by local loosening, ensuring that the net is always in a taut state; the double-point fixation at the beginning and end of the bracket makes the tension of the safety net evenly distributed along the length of the bracket, reducing local wear on the net; the flexible fixing rope can deform to a certain extent when an object falls and impacts, absorbing part of the impact force (impact load attenuation rate ≥30%), reducing the reaction force on the bracket and platform.

[0011] Preferably, the first end of the bracket is hinged to the outer wall of the construction platform, a support plate is provided below the bracket, the support plate is fixedly connected to the construction platform, a sleeve is hinged to the support plate, a movable plate is inserted inside the sleeve, the upper end of the movable plate is hinged to the lower surface of the bracket, and a wedge block for supporting the sleeve is fixedly connected to the support plate.

[0012] With the above structural design, the bracket is hinged to the construction platform, allowing workers to rotate the bracket upwards until it is parallel to the guardrail when disassembling and maintaining the construction platform. This facilitates the inspection and maintenance of the fall protection net. At the same time, it also reduces the area occupied by the device and makes it easier to transport.

[0013] Preferably, a limiting plate is provided at the edge of the construction platform, a push plate is fixedly connected to the limiting plate, and an opening groove matching the push plate is opened on the upper surface of the construction platform.

[0014] With the above structural design, after the limiting plate moves outward, the limiting plate fits against the upper surface of the bracket, and the limiting plate restricts the bracket, preventing the bracket from rotating upward or downward, thus improving stability.

[0015] Preferably, the bracket is an arc-shaped structure that curves outward from the center.

[0016] By adopting the above structural design, the arc-shaped structure can disperse and transmit the impact force along the arc-shaped surface, reducing the risk of the bracket breaking due to excessive force in the middle.

[0017] Compared with the prior art, the beneficial effects of this utility model are: This device, by installing a fall arrest net and brackets around the construction platform, effectively catches personnel or tools that accidentally fall, preventing injuries and damage to personnel and equipment below the platform. The brackets support the fall arrest net, increasing its strength and load-bearing capacity. When personnel or tools fall onto the net, the net moves within the brackets via the first and second fixing ropes, creating a large depression that completely catches the personnel or tools. Simultaneously, the weight is distributed across multiple brackets, significantly improving the device's load-bearing capacity and enhancing safety during bridge cap beam construction. The brackets can rotate with the fall arrest net, facilitating inspection and maintenance. This also reduces the device's footprint, making it easier to transport. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the present invention viewed from below; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A; Figure 4 This utility model Figure 1 Enlarged structural diagram at point B. Detailed Implementation

[0019] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4This utility model provides a technical solution: a safety protection system for bridge construction during the maintenance of a construction access road, comprising a construction platform 1 and a guardrail 2 fixedly connected to the construction platform 1. The construction platform 1 is made of metal or composite material of appropriate strength and processed into a platform structure of a predetermined size. Screw holes are opened on the construction platform or ear plates are fixedly connected to the construction platform so as to connect the construction platform to a preset support structure. Alternatively, depending on the construction site conditions, the construction platform 1 can be welded to the preset support structure. The guardrail 2 includes multiple columns and guard plates fixedly connected to the columns. Along the circumference of the construction platform 1, the guard plates and columns form a continuous structure. A guard plate is set between adjacent columns. The guard plates are fixed to the columns by welding, bolting, or other methods. The columns are fixed to the upper surface of the construction platform 1 by welding, bolting, or other methods.

[0020] A fall protection net 3 is installed around the perimeter of the construction platform 1. Multiple brackets 4 are continuously installed along the outer edge of the construction platform 1. The fall protection net 3 is fixedly connected to the brackets 4 and is positioned above the brackets 4.

[0021] The bracket 4 is an arc-shaped structure that bends outward from the center. The arc-shaped structure can disperse and transmit the impact force along the arc-shaped surface, reducing the risk of the bracket breaking due to excessive force in the center.

[0022] The fall protection net 3 is arranged around the circumference of the construction platform 1. A first side rope 31 is fixedly connected to the inner edge of the fall protection net 3, and a second side rope 32 is fixedly connected to the outer edge of the fall protection net 3. The first side rope 31 and the second side rope 32 act as the "skeleton" of the fall protection net, dispersing localized impact forces across the entire edge and preventing the net from tearing due to concentrated force. A first fixing rope 41 is threaded through the first end of the bracket 4. The first fixing rope 41 can move within the first end of the bracket 4. Both ends of the first fixing rope 41 are fixedly connected to the first side rope 31. A second fixing rope 42 is threaded through the tail end of the bracket 4. The second fixing rope 42 can move within the tail end of the bracket 4. Both ends of the second fixing rope 42 are fixedly connected to the second side rope 32.

[0023] When a person or tool falls onto the fall arrest net 3, the weight of the person or tool will pull the fall arrest net 3 around the contact point, causing it to sink downwards and thus catch the person or tool, preventing a secondary fall. When the fall arrest net 3 is pulled, the first fixing rope 41 moves at the head end of the bracket 3 and the second fixing rope 42 moves at the tail end of the bracket 3, which in turn creates a large indentation at the fall arrest net 3, thus completely catching the person or tool. The fall arrest net 3 can distribute the weight of the person or tool on several brackets 3, greatly improving the load-bearing capacity of the device and enhancing the safety protection effect.

[0024] The first end of the bracket 4 is hinged to the outer wall of the construction platform 1. A support plate 51 is provided below the bracket 4 and is fixedly connected to the construction platform 1. A sleeve 52 is hinged to the support plate 51, and a movable plate 53 passes through the sleeve 52. The upper end of the movable plate 53 is hinged to the lower surface of the bracket 4. A wedge block 54 for supporting the sleeve 52 is fixedly connected to the support plate 51. An inclined surface is provided on the wedge block 54. When the bracket 4 rotates downward to the lowest point, the inclination angle of the inclined surface of the wedge block 54 is consistent with the inclination angle of the sleeve 52. At this time, the outer wall of the sleeve 52 is in contact with the outer wall of the wedge block 54, thereby making the wedge block 54 stably support the sleeve 52 and preventing the sleeve 52 from continuing to rotate.

[0025] During the upward rotation of bracket 4, the movable plate 53 is pulled, causing it to extend and retract within sleeve 52. At this time, sleeve 52 rotates with movable plate 53 until bracket 4 is parallel to guardrail 2. This state reduces the area occupied by the device and facilitates personnel to inspect and maintain fall protection net 202. During the downward rotation of bracket 4 back to its initial position, movable plate 53 is pushed into sleeve 52. When bracket 4 returns to its initial position, movable plate 53 moves to the deepest part of sleeve 52 and cannot retract further, thus supporting and limiting the current position of bracket 4. At this time, the outer wall of sleeve 52 fits against the outer wall of wedge block 54, thereby allowing wedge block 54 to stably support sleeve 52 and prevent sleeve 52 from continuing to rotate, thus improving stability.

[0026] A limiting plate 6 is installed at the edge of the construction platform 1, and a push plate 61 is fixedly connected to the limiting plate 6. An opening groove 62 matching the push plate 61 is opened on the upper surface of the construction platform 1, and the limiting plate 6 moves toward the bracket 4.

[0027] When the bracket 4 is in the initial state, after the limiting plate 6 moves outward, the limiting plate 6 fits against the upper surface of the bracket 4, and the limiting plate 6 restricts the bracket 4, preventing the bracket 4 from moving upward, thereby improving the stability of the device.

[0028] Working principle: First, the guardrail 2 forms a closed enclosure on the upper surface of the construction platform 1 through the continuous structure of the posts and guardrails, directly preventing people from falling out of the platform and forming the first line of defense for safety; the fall protection net 3 surrounds the perimeter of the platform and is connected to the bracket 4 through the first side rope 31 and the second side rope 32, forming the second line of protection covering the bottom and outside of the platform. The combination of the two achieves three-dimensional protection of "preventing falls from above". When the worker unfolds the bracket 4 and rotates it downwards, the movable plate 53 is pushed into the sleeve 52 until the bracket 4 reaches its initial position (at a preset angle with the platform). At this time, the movable plate 53 retracts to the deepest part of the sleeve, and the outer wall of the sleeve 52 fits against the inclined surface of the wedge block 54 (the inclined surface angle matches). The wedge block 54 prevents the sleeve 52 from rotating further, thus achieving a rigid lock of the bracket angle and ensuring that the fall protection net 3 is in a taut and effective protective state. Next, the worker pushes the push plate 61, and the limiting plate 6 at the edge of the construction platform 1 can slide along the edge of the platform, causing the limiting plate 6 to move towards the bracket 4. The limiting plate 6 fits against the upper surface of the bracket 4, restricting the bracket 4 so that it cannot move upwards, thereby improving the stability of the device. The fall protection net 3 is flexibly connected to the bracket 4 via the first fixing rope 41 and the second fixing rope 42. When a person or tool falls onto the fall protection net, the impact force is transmitted to the edge rope through the net and then distributed to multiple brackets 4 via the fixing ropes (instead of being subjected to force at a single point). The first fixing rope 41 moves freely at the head end of the bracket 4, and the second fixing rope 42 slides freely at the tail end of the bracket. Combined with the flexible deformation of the net, a "depression pit" is formed to adapt to the contour of the falling object, preventing the falling object from rolling down again. At the same time, the arc-shaped structure of the bracket 4 further diffuses the force along the arc-shaped surface, preventing local overload breakage and achieving efficient load-bearing. When storing and maintaining this device, rotating the bracket 4 upwards pulls the movable plate 53 and extends / retracts within the sleeve 52. The sleeve 52 rotates with the movable plate until the bracket 4 is parallel to the guardrail 2. In this state, the space occupied by the device is reduced, making it easier for personnel to inspect, replace, or maintain the fall protection net 3.

[0029] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the scope of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this utility model's implementation.

[0030] The present invention has been described above with reference to preferred embodiments, but the scope of protection of the present invention is not limited thereto. All technical solutions falling within the scope of the claims are within the scope of protection of the present invention. Various modifications can be made to the present invention, and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way.

Claims

1. A safety protection system for bridge construction during temporary access road maintenance, comprising a construction platform (1) and a guardrail (2) fixedly connected to the construction platform (1), characterized in that: The construction platform (1) is provided with a fall protection net (3) around its perimeter, and multiple brackets (4) are continuously provided on the outer edge of the construction platform (1). The fall protection net (3) is fixedly connected to the brackets (4).

2. The construction access maintenance work bridge construction safety protection according to claim 1, characterized in that: The fall protection net (3) is arranged around the circumference of the construction platform (1). The inner edge of the fall protection net (3) is fixedly connected to the first side rope (31), and the outer edge of the fall protection net (3) is fixedly connected to the second side rope (32).

3. The construction access road maintenance work bridge construction safety protection according to claim 2, characterized in that: The first fixing rope (41) is threaded through the first end of the bracket (4), and both ends of the first fixing rope (41) are fixedly connected to the first side rope (31). The second fixing rope (42) is threaded through the tail end of the bracket (4), and both ends of the second fixing rope (42) are fixedly connected to the second side rope (32).

4. The construction access maintenance work bridge construction safety protection according to claim 1, characterized in that: The first end of the bracket (4) is hinged to the outer wall of the construction platform (1). A support plate (51) is provided below the bracket (4). The support plate (51) is fixedly connected to the construction platform (1). A sleeve (52) is hinged to the support plate (51). A movable plate (53) is inserted inside the sleeve (52). The upper end of the movable plate (53) is hinged to the lower surface of the bracket (4). A wedge block (54) for supporting the sleeve (52) is fixedly connected to the support plate (51).

5. A construction access road maintenance work bridge construction safety protection according to claim 4, characterized in that: A limiting plate (6) is installed at the edge of the construction platform (1), and a push plate (61) is fixedly connected to the limiting plate (6). An opening groove (62) matching the push plate (61) is opened on the upper surface of the construction platform (1).

6. A construction access maintenance work bridge construction safety protection according to any one of claims 1 to 5, characterized in that: The bracket (4) is an arc-shaped structure that curves outward from the middle.

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