Split type steel box girder special construction platform

Abstract

The application discloses a special construction platform for split steel box girder, which is movably arranged on the steel box girder and relates to the technical field of steel structure bridge construction, and specifically comprises the following structures: a walking platform movably arranged on the steel box girder; a plurality of first lifting platforms which are installed at intervals on the two sides of the walking platform; a plurality of second lifting platforms which are respectively installed at the two ends of the walking platform; a plurality of suspension mechanisms which are installed at intervals on the walking platform and are respectively connected with the first lifting platforms and the second lifting platforms; and the walking platform comprises: a main truss arranged on the steel box girder; a plurality of walking trolleys which are installed at intervals at the bottom of the main truss and are in contact with the upper surface of the steel box girder through walking wheels; and a plurality of auxiliary trusses which are installed at intervals on the two sides of the main truss and have the first lifting platforms installed vertically in the interiors of the auxiliary trusses. The application solves the technical problem of insufficient safety during the construction of the existing split steel box girder.

Description

Technical Field

[0001] This invention relates to the field of steel structure bridge construction technology, and in particular to a special construction platform for split-type steel box girders. Background Technology

[0002] Bridge construction platforms are mainly used during the erection and installation of steel structure bridges to carry personnel and tools to work in blind spots of the bridge construction, solving the accessibility problem for construction personnel. For conventional box girder bridges or truss bridges, the bridge construction platforms used are mostly integral truss structures, which are generally suspended from the bottom of the bridge by a track system for construction operations.

[0003] A split-type steel box girder bridge is a special structure consisting of multiple main steel girders connected by crossbeams, with the main girders having a hollow structure between them. During construction, it is necessary to enter between the main steel girders and crossbeams through the hollow structure. Conventional bridge construction platforms cannot meet the construction requirements of split-type steel box girders. Generally, cranes are used to suspend cages or hangers are installed on the main steel girders to carry out construction between the main steel girders and crossbeams. This method of operation is inefficient, costly, and poses significant safety risks. Summary of the Invention

[0004] The purpose of this invention is to provide a special construction platform for split-type steel box girders, which solves the technical problem of insufficient safety during the construction of split-type steel box girders in the prior art.

[0005] This application discloses a split-type steel box girder dedicated construction platform, which is movably mounted on the steel box girder, including:

[0006] The traveling platform is movable on the steel box girder;

[0007] Multiple first lifting platforms are installed at intervals on both sides of the traveling platform;

[0008] Multiple second lifting platforms are respectively installed at both ends of the traveling platform;

[0009] Multiple suspension mechanisms are installed at intervals on the traveling platform, and the suspension mechanisms are respectively connected to the first lifting platform and the second lifting platform;

[0010] The traveling platform includes:

[0011] The main truss is mounted on the steel box girder;

[0012] Multiple traveling trolleys are installed at intervals at the bottom of the main truss, and the traveling wheels of the traveling trolleys are in contact with the upper surface of the steel box girder;

[0013] Multiple sub-trusses are installed at intervals above the main truss, and the first lifting platform is vertically installed inside the sub-trusses.

[0014] This application includes a walking platform and a first lifting platform, which allows staff to access previously blind spots, ensuring safety while improving work efficiency.

[0015] Based on the above technical solution, the embodiments of this application can be further improved as follows:

[0016] Furthermore, the traveling platform also includes:

[0017] A flip-up bracket, one end of which is hinged to the traveling trolley;

[0018] The guide wheel for correction is installed at the other end of the flipping bracket. The advantage of this step is that it facilitates the stable movement of the traveling platform.

[0019] Furthermore, the rollers of the traveling trolley and the guide wheels for correcting the deviation are all steel-core polyurethane-coated traveling wheels. The beneficial effect of this step is to ensure the stability of the movement.

[0020] Furthermore, the first lifting platform includes:

[0021] The lifting column is vertically installed inside the sub-truss;

[0022] The first fixed pulley is installed at the bottom of the lifting column;

[0023] The first slider is installed at the bottom of the lifting column;

[0024] The activity platform is located at the bottom of the lifting column;

[0025] The first slide rail is installed on the movable platform, and the first slide rail cooperates with the first slider;

[0026] The suspension mechanism includes:

[0027] The winch is installed on the traveling platform;

[0028] The first pulley block is installed on the side of the sub-truss;

[0029] The first wire rope passes sequentially around the winch, the first pulley block, and the first fixed pulley before connecting to the secondary truss. The advantage of this step is that the suspension mechanism can help improve the stability after hoisting.

[0030] Furthermore, the first lifting platform also includes:

[0031] Two sets of folding pedals are respectively set on both sides of the movable platform, and the center line connecting the two sets of folding pedals is perpendicular to the first slide rail;

[0032] A safety rope, one end of which is connected to the folding pedal and the other end of which is connected to the movable platform, is used in this step to increase the working range by using the folding pedal.

[0033] Furthermore, the first lifting platform also includes a guardrail, which is installed on the outside of the movable platform. The beneficial effect of this step is that the guardrail can improve safety.

[0034] Furthermore, the second lifting platform includes:

[0035] The climbing cage is located at the end of the main truss;

[0036] The second guide rail is installed on the side of the climbing cage facing the main truss;

[0037] The second slider is installed at the end of the main truss, and the second slider cooperates with the second guide rail;

[0038] The second fixed pulley is installed at the bottom of the climbing cage;

[0039] The suspension mechanism also includes:

[0040] The second pulley block is installed on the main truss;

[0041] The second wire rope passes sequentially around the winch, the second pulley block, and the second fixed pulley before connecting to the main truss. The advantage of this step is that the second lifting platform can be raised and lowered through the corresponding pulleys.

[0042] Furthermore, a limiting plate is installed on the top of the climbing cage to limit the downward movement of the second guide rail. The use of the limiting plate can further improve safety.

[0043] Furthermore, there are at least two first lifting platforms and at least two second lifting platforms.

[0044] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0045] 1. This application is used for the internal and external construction of split steel box girder bridges. The platform lifting and walking are independent systems, which are simple to operate and highly safe. The walking platform of this application can only move after each lifting platform has been raised to the correct position, thus avoiding misoperation during construction.

[0046] 2. The first lifting platform in this application adopts a movable platform and folding pedal design to ensure that the platform does not interfere with the steel box girder when it is raised or lowered, and can also provide more operating space for personnel during construction.

[0047] 3. The walking platform of this application is an upward walking structure, which is not blocked by the bridge piers and can be used on the entire bridge. It can walk directly on the bridge deck without the need to set up a track system, which can save a lot of costs. Attached Figure Description

[0048] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0049] Figure 1 This is a structural schematic diagram of a split-type steel box girder special construction platform according to a specific embodiment of the present invention;

[0050] Figure 2 for Figure 1 Top view;

[0051] Figure 3 for Figure 1 Top view of the central suspension mechanism;

[0052] Figure 4 for Figure 1 Schematic diagram of the structure of the first lifting platform in the middle;

[0053] Figure 5 for Figure 4 A schematic diagram of part A in the middle;

[0054] Figure 6 for Figure 1 Schematic diagram of the structure of the second lifting platform;

[0055] Specific markers:

[0056] 1-Traveling platform; 2-Steel box girder; 3-First lifting platform; 4-Second lifting platform; 5-Suspension mechanism;

[0057] 101-Main truss; 102-Traveling trolley; 103-Secondary truss; 104-Tilting support; 105-Correction guide wheel;

[0058] 301-Lifting column; 302-First fixed pulley; 303-First slider; 304-Moving platform; 305-First slide rail; 306-Folding pedal; 307-Safety rope; 308-Guardrail;

[0059] 401-Climbing cage; 402-Second guide rail; 403-Second slider; 404-Second fixed pulley; 405-Limiting plate;

[0060] 501 - Winch; 502 - First pulley block; 503 - First wire rope; 504 - Second pulley block; 505 - Second wire rope. Detailed Implementation

[0061] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0062] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0063] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0065] Example:

[0066] like Figure 1-3 As shown in the figure, this application discloses a special construction platform for split steel box girders, which is movably set on the steel box girder to solve the problem of personnel accessibility in blind spots during the construction of split steel box girder bridges, thereby improving work efficiency;

[0067] Its specific structure includes:

[0068] The walking platform 1 is movably set on the steel box girder 2, which facilitates the adjustment of the position of the walking platform 1 and makes it easier for staff to walk. When walking, it is necessary to wait for the subsequent lifting platform to arrive at the corresponding position.

[0069] Multiple first lifting platforms 3 are installed at intervals on both sides of the traveling platform 1, which facilitates the construction work of the staff;

[0070] Multiple second lifting platforms 4 are respectively installed at both ends of the traveling platform 1. The second lifting platform 4 facilitates the staff to reach the traveling platform 1 and finally reach the first lifting platform 3.

[0071] Multiple suspension mechanisms 5 are installed at intervals on the traveling platform 1, and the suspension mechanisms 5 are respectively connected to the first lifting platform 3 and the second lifting platform 4. The suspension mechanisms 5 are used to suspend and lift the first lifting platform 3 and the second lifting platform 4 so that they can reach the corresponding positions.

[0072] The walking platform 1 includes:

[0073] The main truss 101 is mounted on the steel box girder 2, specifically with a certain gap between it and the upper surface of the steel box girder 2, and is supported by the subsequent traveling trolley 102;

[0074] Multiple traveling trolleys 102 are installed at intervals at the bottom of the main truss 101, and the traveling wheels of the traveling trolleys 102 are in contact with the upper surface of the steel box girder 2. The traveling trolleys 102 are existing trolleys used to provide power to complete the adjustment of the position of the main truss 101.

[0075] Multiple sub-trusses 103 are installed at intervals above the main truss 101, and the first lifting platform 3 is vertically installed inside the sub-trusses 103. Specifically, the first lifting platform 3 is set in the hollow part of the sub-truss 103.

[0076] In one embodiment, the traveling platform 1 further includes:

[0077] A flip-up bracket 104, one end of which is hinged to the traveling trolley 102;

[0078] A guide wheel 105 is installed at the other end of the tilting bracket 104. When the traveling platform 1 in this application is moving normally, lowering the guide wheel 105 to fit against the side wall of the split steel box girder can prevent the construction platform from deviating. When the traveling platform 1 passes the cantilever position of the steel box girder, retracting the tilting bracket 104 allows it to avoid obstacles and continue moving forward. Electrical correction can also be achieved by installing sensors on the traveling trolley 102.

[0079] Specifically, the rollers of the traveling trolley 102 and the guide wheels 105 are all steel-core polyurethane coated traveling wheels. This can prevent the traveling platform 1 from slipping when traveling on the surface of the split steel box girder and avoid damage to the surface coating of the steel box girder.

[0080] Among them, such as Figure 4-6 As shown, the first lifting platform 3 includes:

[0081] The lifting column 301 is vertically installed inside the sub-truss 103, and in subsequent use, the lifting column 301 performs lifting and lowering movements.

[0082] The first fixed pulley 302 is installed at the bottom of the lifting column 301, and the first fixed pulley 302 facilitates the subsequent suspension of the wire rope;

[0083] The first slider 303 is installed at the bottom of the lifting column 301;

[0084] The activity platform 304 is located at the bottom of the lifting column 301;

[0085] The first slide rail 305 is installed on the movable platform 304, and the first slide rail 305 cooperates with the first slider 303. In this application, the lifting column 301 and the movable platform 304 are connected by the first slider 303 and the first slide rail 305. This method can realize the adjustment of the position of the movable platform 304, making it easier for staff to reach the blind spot.

[0086] The suspension mechanism 5 includes:

[0087] The winch 501 is installed on the traveling platform 1;

[0088] The first pulley block 502 is installed on the side of the sub-truss 103;

[0089] The first wire rope 503 passes sequentially around the winch 501, the first pulley block 502 and the first fixed pulley 302 and is connected to the secondary truss 103. This application uses the winch 501 to provide power to complete the lifting and lowering of the first lifting platform 3. The first pulley block 502 is used for changing the direction of the wire rope.

[0090] The first lifting platform 3 further includes:

[0091] Two sets of folding pedals 306 are respectively disposed on both sides of the movable platform 304, and the center line connecting the two sets of folding pedals 306 is perpendicular to the first slide rail 305.

[0092] A safety rope 307 is provided, with one end connected to the folding pedal 306 and the other end connected to the movable platform 304. The first lifting platform 3 in this application is equipped with a corresponding folding pedal 306. After reaching the construction position below the crossbeam, the folding pedal 306 can be opened to both sides to increase the operating space. The safety rope 307 is used to prevent the folding pedal 306 from overturning when it is opened to both sides.

[0093] The first lifting platform 3 also includes a guardrail 308, which is installed on the outside of the movable platform 304. The guardrail 308 can play a protective role and is used to protect the staff.

[0094] In yet another embodiment, the second lifting platform 4 includes:

[0095] Climbing cage 401 is installed at the end of the main truss 101;

[0096] The second guide rail 402 is installed on the side of the climbing cage 401 facing the main truss 101;

[0097] The second slider 403 is installed at the end of the main truss 101, and the second slider 403 cooperates with the second guide rail 402;

[0098] The second fixed pulley 404 is installed at the bottom of the climbing cage 401;

[0099] The suspension mechanism 5 also includes:

[0100] The second pulley block 504 is installed on the main truss 101;

[0101] The second wire rope 505 passes through the winch 501, the second pulley block 504 and the second fixed pulley 404 in sequence and is connected to the main truss 101; similarly, the operation of the winch can drive the second lifting platform to rise and fall, making it easier for workers to reach the traveling platform.

[0102] The top of the climbing cage 401 is equipped with a limiting plate 405, which is used to limit the downward movement of the second guide rail 402, so that even if the climbing cage 401 moves downward, it will not completely detach from the second guide rail 402.

[0103] There are at least two first lifting platforms 3 and at least two second lifting platforms 4.

[0104] The following provides further details about this application, which mainly consists of a traveling platform, a first lifting platform (located in the middle), and a second lifting platform (located at both ends).

[0105] The traveling platform can move in a straight line along the longitudinal direction on the upper surface of the split steel box girder bridge. The first lifting platform passes through the secondary truss of the traveling platform and is suspended on both sides of the traveling platform, rising and falling under the traction of winches and wire ropes. Below the first lifting platform is a movable platform, which is connected to the lifting column via linear guide rails and sliders. The movable platform is also equipped with a folding pedal. After the first lifting platform descends to the construction position at the crossbeam position, it pushes the movable platform to slide to below the crossbeam, and then the folding pedal is opened to increase the operating range.

[0106] This application installs linear guide rails on the climbing cage of the second lifting platform, which are assembled with the sliders at both ends of the main truss of the traveling platform to guide the lifting platform. Wire ropes are led out from the winch and pulley block of the traveling platform, pass through the fixed pulleys of the end lifting platform, and control the rise and fall of the end lifting platform under the traction of the winch.

[0107] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0108] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A split-type steel box girder construction platform, movably mounted on the steel box girder, characterized in that, include: The traveling platform is movable on the steel box girder; Multiple first lifting platforms are installed at intervals on both sides of the traveling platform; Multiple second lifting platforms are respectively installed at both ends of the traveling platform; Multiple suspension mechanisms are installed at intervals on the traveling platform, and the suspension mechanisms are respectively connected to the first lifting platform and the second lifting platform; The traveling platform includes: The main truss is mounted on the steel box girder; Multiple traveling trolleys are installed at intervals at the bottom of the main truss, and the traveling wheels of the traveling trolleys are in contact with the upper surface of the steel box girder; Multiple sub-trusses are installed at intervals above the main truss, and the first lifting platform is vertically installed inside the sub-trusses; The first lifting platform includes: The lifting column is vertically installed inside the sub-truss; The first fixed pulley is installed at the bottom of the lifting column; The first slider is installed at the bottom of the lifting column; The activity platform is located at the bottom of the lifting column; The first slide rail is installed on the movable platform, and the first slide rail cooperates with the first slider; The second lifting platform includes: The climbing cage is located at the end of the main truss; The second guide rail is installed on the side of the climbing cage facing the main truss; The second slider is installed at the end of the main truss, and the second slider cooperates with the second guide rail; The second fixed pulley is installed at the bottom of the climbing cage; The suspension mechanism includes: The winch is installed on the traveling platform; The first pulley block is installed on the side of the sub-truss; The first wire rope passes sequentially around the winch, the first pulley block and the first fixed pulley and is then connected to the secondary truss. The second pulley block is installed on the main truss; The second wire rope passes sequentially around the winch, the second pulley block, and the second fixed pulley before connecting to the main truss. The traveling platform also includes: A flip-up bracket, one end of which is hinged to the traveling trolley; A guide wheel for correction is installed at the other end of the flipping bracket; The rollers of the traveling trolley and the guide wheels for correcting the deviation are both steel-core polyurethane-coated traveling wheels; The first lifting platform also includes: Two sets of folding pedals are respectively set on both sides of the movable platform, and the center line connecting the two sets of folding pedals is perpendicular to the first slide rail; A safety rope, one end of which is connected to the folding pedal and the other end of which is connected to the movable platform; The first lifting platform also includes a guardrail, which is installed on the outside of the movable platform; A limiting plate is installed on the top of the climbing cage, which is used to limit the downward movement of the second guide rail.

2. The special construction platform for split-type steel box girders according to claim 1, characterized in that, There are at least two first lifting platforms and at least two second lifting platforms.

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