Steel box girder manhole safety protection device and steel box girder
By designing the manhole safety protection device of the steel box girder, using magnet rings and mesh to prevent people and debris from falling in, and preventing rainwater from entering on rainy days through the design of the hinged cover plate, the problem of manhole safety protection in the construction of the steel box girder is solved, and the operation safety and recyclability of the equipment are improved.
Patent Information
- Application Number
- CN202421265759.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-06-04
AI Technical Summary
During the construction of steel box girders, effective safety protection measures are lacked at the manhole, which leads to the risk of operators and large pieces of debris falling in, and it is impossible to effectively prevent rainwater from entering the box room during rainy days.
Design a steel box girder manhole safety protection device, including frames, mesh and cover plates. A magnet ring is set at the edge of the bottom of the frame, the manhole is located in the magnet ring, and a positioning boss is set on the top; the mesh is covered on the manhole to prevent people and large pieces of debris from falling in; the cover plate is hinged with the frame, and the positioning boss is engaged with the positioning groove to ensure that the cover plate is closed and tight.
In clear weather, the cover plate is uncovered, and the mesh ensures air circulation and prevents people and debris from falling in; in rainy days, the cover plate is covered to prevent rainwater from entering, ensures no water accumulation in the box room, improves operational safety, and can be turned around and used to save resources.
Smart Images
Figure CN222715787U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of steel box girders, and in particular to a steel box girder manhole safety protection device and a steel box girder. Background Art
[0002] Steel box girder, also known as steel plate box girder, is a common structural form for long-span bridges. It is generally used on bridges with larger spans. It is called steel box girder because it looks like a box. Steel box girder is generally made of top plate, bottom plate, web plate, transverse diaphragm, longitudinal diaphragm and stiffening ribs connected by full welding. The top plate is an orthotropic bridge deck composed of cover plate and longitudinal stiffening ribs.
[0003] In the related technology, during the construction of steel box girders, due to the limited space on site, the entire steel box girder is hoisted in sections. The chamber inside the steel box girder needs welders to enter and weld to connect the steel box girders at each stage. Therefore, a manhole needs to be opened on the top plate of the box girder as the entrance and exit for welding workers to enter and exit the steel box girder chamber. In the daily construction process, warning signs are generally used at the manholes to prevent people and large debris from falling in, which cannot truly ensure the safety of the workers. Summary of the invention
[0004] The present application provides a steel box girder manhole safety protection device and a steel box girder. When construction is carried out in clear weather, the cover plate can be opened. There is a mesh under the cover plate to ensure the normal inflow of air and the airflow of ventilation facilities. The mesh is used to prevent people and large debris from falling in, thereby ensuring the safety of workers. When no work is done on rainy days, the cover plate can be covered to prevent rainwater from falling into the steel box girder box room, and the cover plate can be used in rotation.
[0005] In a first aspect, an embodiment of the present application provides a steel box girder manhole safety protection device, which includes:
[0006] A frame, wherein a manhole is provided on the frame, a magnet ring is provided on the bottom edge of the frame, and when projected along the thickness direction of the frame, the manhole is located inside the magnet ring, and a positioning boss is provided on the top surface of the frame;
[0007] A mesh sheet, which is arranged inside the frame and covers the manhole;
[0008] A cover plate, the cover plate is hinged to the frame, and a positioning groove is formed on the inner side of the cover plate;
[0009] When the cover plate is rotated to fit with the frame, the positioning boss is engaged with the positioning groove.
[0010] In combination with the first aspect, in one embodiment, a plurality of receiving blocks are provided on the inner side wall of the frame, the plurality of receiving blocks are located on the same horizontal plane, and the plurality of receiving blocks are used to receive the mesh.
[0011] In combination with the first aspect, in one implementation, projected along the thickness direction of the frame, the positioning boss and the positioning groove are in the shape of an elliptical track.
[0012] In combination with the first aspect, in one embodiment, the number of the positioning bosses and the number of the positioning grooves are both multiple, and the multiple positioning bosses correspond one-to-one to the multiple positioning grooves and are adapted to the corresponding positioning grooves.
[0013] In combination with the first aspect, in one implementation, the longitudinal sections of the positioning boss and the positioning groove are substantially in a herringbone shape.
[0014] In combination with the first aspect, in one implementation, the inner material of the cover plate is rubber.
[0015] In combination with the first aspect, in one embodiment, the outer material of the cover plate is metal, and the thickness of the metal is greater than or equal to 1 cm and less than or equal to 4 cm.
[0016] In combination with the first aspect, in one embodiment, the pores of the mesh are 5 cm×5 cm.
[0017] In combination with the first aspect, in one implementation, the thickness of the magnet ring is greater than or equal to 1 cm and less than or equal to 2 cm.
[0018] In a second aspect, an embodiment of the present application provides a steel box girder, which includes a steel box girder manhole safety protection device as described in some of the above embodiments.
[0019] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:
[0020] The magnet ring can be used to fix the frame and the top plate of the steel box girder. At the same time, the manhole is located inside the magnet ring, which can also prevent rainwater from entering the manhole, ensuring that there is no water accumulation in the steel box girder box room. When the weather is clear, the cover can be opened. There is a mesh under the cover to ensure the normal inflow of air and the airflow of ventilation facilities. The mesh prevents people and large debris from falling in, ensuring the safety of the workers. When not working on rainy days, the cover can be covered to prevent rainwater from falling into the steel box girder box room. When the cover is covered, the positioning boss and the positioning groove are engaged to ensure that the cover is closed and tightened to prevent it from being affected by external wind. This steel box girder manhole safety protection device ensures the safety of the workers and can be used in a turnover manner, avoiding unnecessary workload and saving manpower, material and financial resources. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0022] Figure 1 It is a top view structural diagram of the manhole safety protection device of the steel box girder;
[0023] Figure 2 It is a structural schematic diagram of the positioning boss from a longitudinal section perspective;
[0024] Figure 3 It is a structural schematic diagram of the longitudinal section perspective of the positioning groove.
[0025] In the figure: 1, frame; 11, manhole; 12, positioning boss; 2, mesh; 3, cover plate; 31, positioning groove. DETAILED DESCRIPTION
[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0027] The embodiment of the present application provides a steel box girder manhole safety protection device and a steel box girder. When construction is in clear weather, the cover plate can be opened. There is a mesh under the cover plate to ensure the normal inflow of air and airflow of ventilation facilities. The mesh is used to prevent people and large debris from falling in, thereby ensuring the safety of workers. When no work is done on rainy days, the cover plate can be closed to prevent rainwater from falling into the steel box girder box room, and it can be used in rotation.
[0028] like Figure 1 As shown, an embodiment of the present application provides a manhole safety protection device for a steel box girder, which may include: a frame 1, wherein the frame 1 is provided with a manhole 11, a magnet ring is provided at the bottom edge of the frame 1, and the manhole 11 is located inside the magnet ring when projected along the thickness direction of the frame 1, and a positioning boss 12 is provided on the top surface of the frame 1; a mesh 2, wherein the mesh 2 is arranged inside the frame 1 and covers the manhole 11; a cover plate 3, wherein the cover plate 3 is hinged to the frame 1, and a positioning groove 31 is provided on the inner side of the cover plate 3; when the cover plate 3 is rotated to fit with the frame 1, the positioning boss 12 is engaged with the positioning groove 31.
[0029] Exemplarily, the frame 1 can be set in the shape of an elliptical runway, and the frame 1 is provided with a manhole 11 in the shape of an elliptical runway, a magnet ring is fixed at the bottom edge of the frame 1, and the manhole 11 is located inside the magnet ring, a positioning boss 12 is fixed to the top surface of the frame 1, and a mesh in the shape of an elliptical runway is provided inside the frame 1, and a cover plate 3 is hinged on the right side wall of the frame 1, and the cover plate 3 can be rotated to cover the top surface of the frame 1, or rotated to open the manhole 11; when the cover plate 3 closes the manhole 11, the positioning boss 12 engages with the positioning groove 31 to fasten the cover plate 3 to the top surface of the frame 1.
[0030] Specifically, the magnet ring can facilitate the fixed installation of the frame 1 and the top plate of the steel box beam. At the same time, the manhole 11 is located in the magnet ring, which is also convenient for the magnet ring to block the rainwater from the outside from entering the manhole 11, ensuring that there is no water accumulation in the steel box beam box room; when the weather is clear, the cover plate 3 can be opened, and the mesh 2 is below the cover plate 3, which can ensure the normal inflow of air and the airflow of the ventilation facilities. The mesh 2 prevents people and large debris from falling in, ensuring the safety of the operators; when not working on rainy days, the cover plate 3 can be covered to prevent rainwater from falling into the steel box beam box room; when the cover plate 3 is covered, the positioning boss 12 is engaged with the positioning groove 31, which can ensure that the cover plate 3 is closed and tightened to prevent it from being affected by external wind. Through this steel box beam manhole safety protection device, the safety of the operators is guaranteed, and it can be used in a turnover manner, avoiding unnecessary workload, and saving manpower, material resources, and financial resources.
[0031] In combination with the first aspect, in one embodiment, the inner side wall of the frame 1 is provided with a plurality of receiving blocks, the plurality of receiving blocks are located in the same horizontal plane, and the plurality of receiving blocks are used to receive the mesh 2. The mesh 2 can be installed in a manner that it can be supported by a plurality of receiving blocks, and when the mesh 2 is placed on the top surfaces of the plurality of receiving blocks, the placement of the mesh 2 is completed, and the operation is simple, the design is reasonable, and it is also convenient for the staff to enter the manhole 11.
[0032] In combination with the first aspect, in one embodiment, Figure 1 As shown, the positioning boss 12 and the positioning groove 31 are projected in the thickness direction of the frame 1 to form an elliptical racetrack. Exemplarily, the positioning boss 12 may have the same shape as the frame 1 and is disposed on the top surface of the frame 1, and the positioning groove 31 is adapted to the positioning boss 12 to ensure the sealing and tightness between the cover plate 3 and the frame 1 when the cover plate 3 is closed.
[0033] In combination with the first aspect, in one embodiment, the number of the positioning bosses 12 and the positioning grooves 31 are both multiple, and the multiple positioning bosses 12 correspond to the multiple positioning grooves 31 one by one and are adapted to the corresponding positioning grooves 31. Of course, in some embodiments, the number of positioning bosses 12 and positioning grooves 31 can be multiple, and the positioning bosses 12 are equidistantly distributed along the top surface of the frame 1, and the positioning grooves 31 are engaged with the corresponding positioning bosses 12, which can also ensure the closing effect of the cover plate 3; at the same time, it can also save the material use of the positioning bosses 12, and it is also convenient for the processing of the positioning bosses 12 and the positioning grooves 31.
[0034] In combination with the first aspect, in one embodiment, Figure 2 and Figure 3 As shown, the longitudinal sections of the positioning boss 12 and the positioning groove 31 are roughly in the shape of a herringbone. The longitudinal sections of the positioning boss 12 and the positioning groove 31 are roughly in the shape of a herringbone, which can improve the fastening degree of the cover plate 3 and the frame 1 when they are closed, and also improve the sealing degree of the cover plate 3 and the frame 1 when they are closed to prevent rainwater from entering.
[0035] In combination with the first aspect, in one embodiment, the inner material of the cover plate 3 is rubber. Among them, because the inner material of the cover plate 3 is made of rubber, when the positioning groove 31 and the positioning boss 12 are engaged and fixed, the extrusion force generated by the inner side of the cover plate 3 when closed will cause the positioning groove 31 to deform, so that the positioning groove 31 and the positioning boss 12 are engaged by interference fit, further improving the fastening and sealing degree of the cover plate 3 and the frame 1 when closed, and preventing rainwater from entering.
[0036] In combination with the first aspect, in one embodiment, the outer material of the cover plate 3 is metal, and the thickness of the metal is greater than or equal to 1 cm and less than or equal to 4 cm. The outer material of the cover plate 3 is metal material, which can improve the rigidity and strength of the cover plate 3, provide sufficient bearing capacity, and ensure the safety of pedestrians passing through the cover plate 3. Exemplarily, the outer material of the cover plate 3 is a steel plate, and the thickness of the steel plate is 1 cm, 2 cm, 3 cm or 4 cm.
[0037] In combination with the first aspect, in one embodiment, the mesh 2 has a pore size of 5 cm×5 cm. The mesh 2 has a pore size of 5 cm×5 cm, which can ensure the amount of air entering on the one hand, and can also ensure that foreign objects can be received and prevented from falling into the steel box girder on the other hand.
[0038] In combination with the first aspect, in one embodiment, the thickness of the magnet ring is greater than or equal to 1 cm and less than or equal to 2 cm. For example, the thickness of the magnet ring can be designed to be 2 cm, which can, on the one hand, simply fix the frame 1 to the top plate of the steel box beam, and on the other hand, facilitate the subsequent removal of the magnet ring for device transfer.
[0039] Second, as Figure 1 As shown, an embodiment of the present application provides a steel box girder, which includes a frame 1, the frame 1 is provided with a manhole 11, the bottom edge of the frame 1 is provided with a magnet ring, the magnet ring is fixed to the top plate of the steel box girder, and the manhole of the top plate of the steel box girder is coaxially arranged with the manhole 11 of the frame 1, and projected along the thickness direction of the frame 1, the manhole 11 is located in the magnet ring, and the top surface of the frame 1 is provided with a positioning boss 12; a mesh 2, the mesh 2 is arranged inside the frame 1 and covers the manhole 11; a cover plate 3, the cover plate 3 is hinged to the frame 1, and a positioning groove 31 is provided on the inner side of the cover plate 3; when the cover plate 3 is rotated to fit with the frame 1, the positioning boss 12 is engaged with the positioning groove 31.
[0040] Exemplarily, the frame 1 can be set in the shape of an elliptical runway, and the frame 1 is provided with a manhole 11 in the shape of an elliptical runway, a magnet ring is fixed at the bottom edge of the frame 1, and the manhole 11 is located inside the magnet ring, a positioning boss 12 is fixed to the top surface of the frame 1, and a mesh in the shape of an elliptical runway is provided inside the frame 1, and a cover plate 3 is hinged on the right side wall of the frame 1, and the cover plate 3 can be rotated to cover the top surface of the frame 1, or rotated to open the manhole 11; when the cover plate 3 closes the manhole 11, the positioning boss 12 engages with the positioning groove 31 to fasten the cover plate 3 to the top surface of the frame 1.
[0041] Specifically, the magnet ring can facilitate the fixed installation of the frame 1 and the top plate of the steel box beam. At the same time, the manhole 11 is located in the magnet ring, which is also convenient for the magnet ring to block the rainwater from the outside from entering the manhole 11, ensuring that there is no water accumulation in the steel box beam box room; when the weather is clear, the cover plate 3 can be opened, and the mesh 2 is below the cover plate 3, which can ensure the normal inflow of air and the airflow of the ventilation facilities. The mesh 2 prevents people and large debris from falling in, ensuring the safety of the operators; when not working on rainy days, the cover plate 3 can be covered to prevent rainwater from falling into the steel box beam box room; when the cover plate 3 is covered, the positioning boss 12 is engaged with the positioning groove 31, which can ensure that the cover plate 3 is closed and tightened to prevent it from being affected by external wind. Through this steel box beam manhole safety protection device, the safety of the operators is guaranteed, and it can be used in a turnover manner, avoiding unnecessary workload, and saving manpower, material resources, and financial resources.
[0042] In combination with the second aspect, in one embodiment, the inner side wall of the frame 1 is provided with a plurality of receiving blocks, the plurality of receiving blocks are located in the same horizontal plane, and the plurality of receiving blocks are used to receive the mesh 2. The mesh 2 can be installed in a manner that it can be supported by a plurality of receiving blocks, and when the mesh 2 is placed on the top surfaces of the plurality of receiving blocks, the placement of the mesh 2 is completed, and the operation is simple, the design is reasonable, and it is also convenient for the staff to enter the manhole 11.
[0043] In conjunction with the second aspect, in one implementation, Figure 1 As shown, the positioning boss 12 and the positioning groove 31 are projected in the thickness direction of the frame 1 to form an elliptical racetrack. Exemplarily, the positioning boss 12 may have the same shape as the frame 1 and is disposed on the top surface of the frame 1, and the positioning groove 31 is matched with the positioning boss 12 to ensure the sealing and tightness between the cover plate 3 and the frame 1 when the cover plate 3 is closed.
[0044] In combination with the second aspect, in one embodiment, the number of the positioning bosses 12 and the positioning grooves 31 are both multiple, and the multiple positioning bosses 12 correspond to the multiple positioning grooves 31 one by one and are adapted to the corresponding positioning grooves 31. Of course, in some embodiments, the number of positioning bosses 12 and positioning grooves 31 can be multiple, and the positioning bosses 12 are equidistantly distributed along the top surface of the frame 1, and the positioning grooves 31 are engaged with the corresponding positioning bosses 12, which can also ensure the closing effect of the cover plate 3; at the same time, it can also save the material use of the positioning bosses 12, and it is also convenient for the processing of the positioning bosses 12 and the positioning grooves 31.
[0045] In conjunction with the second aspect, in one implementation, Figure 2 and Figure 3 As shown, the longitudinal sections of the positioning boss 12 and the positioning groove 31 are roughly in the shape of a herringbone. The longitudinal sections of the positioning boss 12 and the positioning groove 31 are roughly in the shape of a herringbone, which can improve the fastening degree of the cover plate 3 and the frame 1 when they are closed, and also improve the sealing degree of the cover plate 3 and the frame 1 when they are closed to prevent rainwater from entering.
[0046] In combination with the second aspect, in one embodiment, the inner material of the cover plate 3 is rubber. Among them, because the inner material of the cover plate 3 is made of rubber, when the positioning groove 31 and the positioning boss 12 are engaged and fixed, the extrusion force generated by the inner side of the cover plate 3 when closed will cause the positioning groove 31 to deform, so that the positioning groove 31 and the positioning boss 12 are engaged by interference fit, further improving the fastening and sealing degree of the cover plate 3 and the frame 1 when closed, and preventing rainwater from entering.
[0047] In combination with the second aspect, in one embodiment, the outer material of the cover plate 3 is metal, and the thickness of the metal is greater than or equal to 1 cm and less than or equal to 4 cm. The outer material of the cover plate 3 is metal material, which can improve the rigidity and strength of the cover plate 3, provide sufficient bearing capacity, and ensure the safety of pedestrians passing through the cover plate 3. Exemplarily, the outer material of the cover plate 3 is a steel plate, and the thickness of the steel plate is 1 cm, 2 cm, 3 cm or 4 cm.
[0048] In combination with the second aspect, in one embodiment, the mesh 2 has a pore size of 5 cm×5 cm. The mesh 2 has a pore size of 5 cm×5 cm, which can ensure the amount of air entering on the one hand, and can also ensure that foreign objects can be received and prevented from falling into the steel box girder on the other hand.
[0049] In conjunction with the second aspect, in one embodiment, the thickness of the magnet ring is greater than or equal to 1 cm and less than or equal to 2 cm. For example, the thickness of the magnet ring can be designed to be 2 cm, which can, on the one hand, simply fix the frame 1 to the top plate of the steel box beam, and on the other hand, facilitate the subsequent removal of the magnet ring for device transfer.
[0050] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0051] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0052] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.
Claims
1. A steel box girder manhole safety protection device, characterized in that: It includes: A frame (1), wherein the frame (1) is provided with a manhole (11), a magnet ring is provided at the bottom edge of the frame (1), and when projected along the thickness direction of the frame (1), the manhole (11) is located inside the magnet ring, and a positioning boss (12) is provided on the top surface of the frame (1); A mesh sheet (2), the mesh sheet (2) being arranged inside the frame (1) and covering the manhole (11); A cover plate (3), the cover plate (3) being hinged to the frame (1), and a positioning groove (31) is provided on the inner side of the cover plate (3); When the cover plate (3) is rotated to fit the frame (1), the positioning boss (12) is engaged with the positioning groove (31).
2. The steel box girder manhole safety protection device according to claim 1, characterized in that: The inner side wall of the frame (1) is provided with a plurality of receiving blocks, the plurality of receiving blocks are located on the same horizontal plane, and the plurality of receiving blocks are used to receive the mesh (2).
3. The steel box girder manhole safety protection device according to claim 1, characterized in that: Projected along the thickness direction of the frame (1), the positioning boss (12) and the positioning groove (31) are in the shape of an elliptical track.
4. The steel box girder manhole safety protection device according to claim 1, characterized in that: The number of the positioning bosses (12) and the number of the positioning grooves (31) are both multiple, and the multiple positioning bosses (12) correspond to the multiple positioning grooves (31) one by one and are adapted to the corresponding positioning grooves (31).
5. The steel box girder manhole safety protection device according to claim 1, characterized in that: The longitudinal sections of the positioning boss (12) and the positioning groove (31) are substantially in a herringbone shape.
6. The steel box girder manhole safety protection device according to claim 1, characterized in that: The inner side material of the cover plate (3) is rubber.
7. The steel box girder manhole safety protection device according to claim 1, characterized in that: The outer material of the cover plate (3) is metal, and the thickness of the metal is greater than or equal to 1 cm and less than or equal to 4 cm.
8. The steel box girder manhole safety protection device according to claim 1, characterized in that: The pores of the mesh (2) are 5 cm×5 cm.
9. The steel box girder manhole safety protection device according to claim 1, characterized in that: The thickness of the magnet ring is greater than or equal to 1 cm and less than or equal to 2 cm.
10. A steel box girder, characterized in that: It includes the steel box girder manhole safety protection device as described in any one of claims 1-9.