Bottom-holding protection device for bridge construction

Abstract

The utility model relates to the technical field of construction protection, in particular to a bridge construction bottom-holding protection device which comprises a box girder, a protection plate is arranged on the lower side of the box girder, a supporting beam is arranged on the lower side of the protection plate, a breast board is arranged on one side of the protection plate, and a control device is arranged on the upper side of the box girder. The control device comprises a winding mechanism, a mobile device and a suspension assembly, the winding mechanism is arranged on the upper side of the mobile device, and the mobile device is in sliding contact with the box girder; the suspension assembly comprises a sling and a bolt, the bolt penetrates through the protection plate and is detachably connected with the supporting beam, one end of the sling is connected with the bolt, and the other end of the sling is connected with the winding mechanism; the protection plate is fixed and moved through the control device, the sling is wound through the winding mechanism to be used for suspending the protection plate, the protection plate can be controlled to move up and down, constructors can disassemble and assemble the protection plate and clean sundries conveniently, and safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of construction protection technology, and in particular to a bottom protection device for bridge construction. Background Technology

[0002] A bridge is generally a structure erected over rivers, lakes, or seas to allow vehicles and pedestrians to pass smoothly. To adapt to the rapidly developing modern transportation industry, the term "bridge" has also come to refer to structures built across mountains, challenging geological conditions, or to meet other transportation needs, making travel more convenient.

[0003] During construction on bridges, debris can easily fall through the gaps between the bridge sections, potentially causing accidents below. To avoid this, two common solutions are either to close off the area under the construction site or to install protective devices under the bridge.

[0004] The first option would make the road under the bridge impassable during construction. The second option is a bottom protection device, which uses connecting rods that pass through the gaps between the precast beams and slabs and are connected to a protective plate at the bottom to provide bottom protection and prevent debris from falling and affecting the road under the bridge.

[0005] Existing protective devices are difficult to install and remove, requiring tools. Furthermore, dismantling them after construction is challenging, as they involve working at heights. During dismantling, the protective devices and debris on them may fall, posing a safety hazard. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a bridge construction bottom protection device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A bridge construction underbody protection device includes a box girder, a protective plate on the underside of the box girder, a support beam on the underside of the protective plate, a guardrail on one side of the protective plate, and a control device on the upper side of the box girder. The control device includes a winding mechanism, a moving device, and a suspension assembly. The winding mechanism is located on the upper side of the moving device, and the moving device slides in contact with the box girder. The suspension assembly includes slings and bolts. The bolts penetrate the protective plate and are detachably connected to the support beam. One end of the sling is connected to the bolt, and the other end of the sling is connected to the winding mechanism. Multiple sets of slings are evenly distributed on the upper side of the protective plate.

[0009] Preferably, the protective plate includes a first thin steel plate and a second thin steel plate, and multiple sets of the first thin steel plate and the second thin steel plate are laid flat on the underside of the box girder, with the first thin steel plate and the second thin steel plate overlapping at the contact point.

[0010] Preferably, the support beam includes longitudinal beams and transverse beams. Multiple sets of transverse beams are provided and are evenly arranged on the lower side of the protective plate. The longitudinal beams are arranged on the lower side of the transverse beams and are perpendicular to each other. The bolts are detachably connected to the longitudinal beams.

[0011] Preferably, both the longitudinal beam and the transverse beam are made of channel steel, the transverse beam is fixedly connected to the second thin steel plate, and both ends of the transverse beam extend to the underside of the first thin steel plate.

[0012] Preferably, the mobile device has a drive wheel on its lower side, and a limiting guard edge is provided on one side of the drive wheel.

[0013] Preferably, the winding mechanism is a take-up reel or a winch, and the winding mechanism is equipped with a check valve.

[0014] The beneficial effects of this utility model are as follows:

[0015] Compared with the prior art, this utility model uses a control device to fix and move the protective plate. The sling is wound up by a winding mechanism to suspend the protective plate. It can also control the up and down movement of the protective plate, which is convenient for construction personnel to disassemble and install the protective plate and clean up debris. At the same time, a mobile device is set up to realize the horizontal movement of the protective plate, which can be quickly transferred in accordance with the construction progress and effectively ensure construction efficiency. Attached Figure Description

[0016] Figure 1 This is a first-view three-dimensional structural diagram of a bridge construction bottom protection device proposed in this utility model.

[0017] Figure 2 This is a second-view three-dimensional structural diagram of a bridge construction bottom protection device proposed in this utility model.

[0018] Figure 3 This is a partial cross-sectional structural diagram of a bridge construction bottom protection device proposed in this utility model;

[0019] Figure 4 This is a top-view structural diagram of the protective plate of a bridge construction bottom protection device proposed in this utility model.

[0020] In the diagram: 1. Box girder; 2. Protective plate; 21. First thin steel plate; 22. Second thin steel plate; 3. Parapet; 4. Support beam; 41. Longitudinal beam; 42. Cross beam; 5. Control device; 51. Winding mechanism; 52. Moving equipment; 53. Sling; 54. Bolt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] Reference Figure 1-4 A bridge construction bottom protection device includes a box girder 1, with a protective plate 2 on the underside of the box girder 1. The protective plate 2 includes a first thin steel plate 21 and a second thin steel plate 22, with multiple sets of the first thin steel plate 21 and the second thin steel plate 22 laid flat on the underside of the box girder 1. The first thin steel plate 21 and the second thin steel plate 22 overlap at the contact point to avoid gaps that could cause construction debris to slip. A support beam 4 is provided on the underside of the protective plate 2, with multiple sets of the cross beams 41 evenly distributed on the underside of the protective plate 2. The longitudinal beams 41 are located on the underside of the cross beams 42 and are perpendicular to each other. The longitudinal beams 41 support the cross beams 42, thereby supporting the protective plate 2. Both the longitudinal beams 41 and the cross beams 42 are made of channel steel. The cross beams 42 are fixedly connected to the second thin steel plate 22, and both ends of the cross beams 42 extend to the underside of the first thin steel plate 21 to ensure that the first thin steel plate 21 can be stably supported.

[0023] A guardrail 3 is provided on one side of the protective plate 2, which protects the box girder 1 from the side. A control device 5 is provided on the upper side of the box girder 1 to control the up and down movement of the protective plate 2, so as to facilitate the installation, movement or removal of fallen objects by construction personnel. The control device 5 includes a winding mechanism 51, a moving device 52 and a suspension assembly. The winding mechanism 51 is located on the upper side of the moving device 52. The moving device 52 slides in contact with the box girder 1. A drive wheel is provided on the lower side of the moving device 52. A limiting guard is provided on one side of the drive wheel to abut against the box girder 1, guide the drive wheel and limit the movement trajectory of the moving device 52. The winding mechanism 51 adopts a winding reel or a winch. A check device is provided in the winding mechanism 51. The check device is generally a ratchet device to limit the rotation of the winding mechanism 51, so as to ensure that the lifting and suspension assembly stably suspends the protective plate 2 and avoids falling.

[0024] The suspension assembly includes slings 53 and bolts 54. The slings 53 are manually wound by a take-up reel or driven directly by a winch motor. The bolts 54 pass through the protective plate 2 and are detachably connected to the longitudinal beam 41 in the support beam 4. One end of the slings 53 is connected to the bolts 54, and the other end of the slings 53 is connected to the take-up mechanism 51. Multiple sets of slings 53 are evenly distributed on the upper side of the protective plate 2. The slings 53 lift the protective plate 2 and abut against the box beam 1 to prevent the protective plate 2 from shaking and causing falling objects to slip.

[0025] In this embodiment, the construction personnel move the control device 5 to the construction point, release the sling 53, assemble the support beam 4 below the bridge construction point, lay the protective plate 2 according to the construction range, and connect the support beam 4 by bolts 54 through the protective plate 2. The sling 53 is connected to the bolts 54, and the sling 53 can be wound up with the help of the winding mechanism 51 to lift the protective plate 2 until the protective plate 2 touches the box girder 1, thus providing bottom protection for the bridge construction part.

[0026] When the construction section needs to be completed and needs to be moved, the anti-return device on the winding mechanism 51 is opened, the sling 53 is released, the protective plate 2 is lowered, the fallen objects are cleared, and the protective plate 2 is moved as a whole by the mobile equipment 52 until it reaches the construction point. The protective plate 2 is then lifted again and pressed against the lower surface of the box girder 1 to prevent the protective plate 2 from shaking. At the same time, it ensures bottom protection to prevent construction debris from falling and causing damage to the area below.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. A bridge construction under-protection device, comprising a box girder (1), characterized in that, The box girder (1) is provided with a protective plate (2) on the lower side, a support beam (4) is provided on the lower side of the protective plate (2), a guardrail (3) is provided on one side of the protective plate (2), and a control device (5) is provided on the upper side of the box girder (1). The control device (5) includes a winding mechanism (51), a mobile device (52) and a suspension assembly. The winding mechanism (51) is located on the upper side of the mobile device (52), and the mobile device (52) slides in contact with the box girder (1). The suspension assembly includes a sling (53) and a bolt (54). The bolt (54) passes through the protective plate (2) and is detachably connected to the support beam (4). One end of the sling (53) is connected to the bolt (54), and the other end of the sling (53) is connected to the winding mechanism (51). The sling (53) is provided in multiple sets and is evenly arranged on the upper side of the protective plate (2).

2. The bridge construction bottom protection device according to claim 1, characterized in that, The protective plate (2) includes a first thin steel plate (21) and a second thin steel plate (22). Multiple sets of the first thin steel plate (21) and the second thin steel plate (22) are provided and laid flat on the underside of the box girder (1). The first thin steel plate (21) and the second thin steel plate (22) overlap at the contact point.

3. A bridge construction under-protection device according to claim 2, characterized in that, The support beam (4) includes a longitudinal beam (41) and a transverse beam (42). The transverse beam (42) is provided in multiple sets and is evenly arranged on the lower side of the protective plate (2). The longitudinal beam (41) is arranged on the lower side of the transverse beam (42) and is perpendicular to each other. The bolt (54) is detachably connected to the longitudinal beam (41).

4. A bridge construction under-protection device according to claim 3, characterized in that, Both the longitudinal beam (41) and the transverse beam (42) are made of channel steel. The transverse beam (42) is fixedly connected to the second thin steel plate (22). Both ends of the transverse beam (42) extend to the underside of the first thin steel plate (21).

5. A bridge construction under-protection device according to claim 1, characterized in that, The mobile device (52) has a drive wheel on its lower side, and a limiting guard is provided on one side of the drive wheel.

6. A bridge construction under-protection device according to claim 1, characterized in that, The winding mechanism (51) is a winding reel or a winch, and the winding mechanism (51) is equipped with a check device.

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