Support frame

Abstract

The present application provides a support frame, which belongs to the technical field of steel box girder construction. The support frame includes: a main beam, on which a slot and a first limit portion are respectively provided; a secondary beam, one end of which is connected to the main beam, the secondary beam is vertically connected to the main beam, and a second limit portion is provided on the secondary beam; wherein the slot can be used to be clamped on the steel box beam, and the main beam or the secondary beam is used to set up a temporary platform. In the process of splicing and assembling the steel box beam, the end panel structure of the steel box beam can be used as a fixed point on the support frame, and several of the support frames are arranged in an array, and a temporary platform can be set up on adjacent support frames to facilitate the work of construction personnel. According to the specific conditions on site, the main beam or the secondary beam can be used to set up a temporary platform to ensure that the temporary platform can extend and cover the entire construction section. The support frame has low manufacturing cost, high turnover rate, and is easy to install and disassemble, which greatly improves the construction efficiency when splicing steel box beams.

Description

Technical Field

[0001] The invention belongs to the technical field of steel box girder construction, and in particular relates to a temporary platform support frame used for erecting steel box girder welding operations. Background Art

[0002] In the current field of bridge engineering construction, many bridge structures adopt steel box girder structures. The characteristics and advantages of steel box girders can meet on-site welding, and can also be centrally manufactured and spliced ​​on-site. They can be more flexible, convenient and quantitative. However, no matter what form is adopted, when the steel structure is made into a single plate, different parts need to be spliced ​​and assembled in a certain order into the steel box girder structure designed in the drawing.

[0003] During the installation process, as components are gradually transformed from zero to whole, welding or assembly work in some parts requires the use of ladders, mobile climbing equipment, etc. to complete some heights that cannot be reached by humans. In this case, some local component splicing or relatively small component splicing is often inefficient due to the frequent handling and repeated turnover of climbing equipment. The "point" limitation of the climbing equipment causes the construction work surface to not form a "line or surface", so that workers performing the same operation at the same time need to achieve a "one-to-one" match between the climbing equipment and the operators, which not only increases the equipment investment, but also makes the construction work environment more chaotic and complicated. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a support frame to solve the problems of low efficiency, cumbersome operations and relatively dangerous high-altitude operations caused by frequent splicing of climbing equipment during high-altitude operations in the prior art.

[0005] The present application provides a support frame for setting up a temporary platform for steel box girder welding operation, comprising:

[0006] A main beam, on which a clamping groove and a first limiting portion are respectively provided;

[0007] A secondary beam, one end of which is connected to the main beam, the secondary beam is vertically connected to the main beam, and a second limiting portion is provided on the secondary beam;

[0008] The slot can be used to be mounted on a steel box beam, and the main beam or the auxiliary beam is used to build a temporary platform.

[0009] Furthermore, the slot on the main beam includes:

[0010] A first duckbill slot, which is provided at the first end of the main beam;

[0011] A second duckbill slot is disposed between the first end and the second end of the main beam, and the second duckbill slot is disposed opposite to the first duckbill slot.

[0012] Furthermore, the directions in which the slots on the main beam are opened are perpendicular to the length direction of the main beam.

[0013] Furthermore, an arc-shaped stiffening plate is provided on the main beam, and the arc-shaped stiffening plate is fixedly connected to the outer groove plate of the first duckbill slot.

[0014] Furthermore, a triangular stiffening plate is provided on the main beam, and at least two triangular stiffening plates are respectively connected to the two slot plates of the second duckbill slot.

[0015] Further, the length direction of the sub-beam is the same as the opening direction of the second duckbill slot;

[0016] And the auxiliary beam is located between the second duckbill slot and the second end of the main beam.

[0017] Further,

[0018] The first limiting portion is fixedly connected to the second end of the main beam and is arranged in an extending direction away from the auxiliary beam;

[0019] The second limiting portion is fixedly connected to the end of the auxiliary beam away from the main beam, and is arranged on a side of the auxiliary beam close to the clamping groove.

[0020] Further,

[0021] The length of the main beam can be retracted, and the main beam comprises:

[0022] A first telescopic portion, which is provided between the first end of the main beam and the secondary beam;

[0023] A second telescopic portion, which is provided between the second end of the main beam and the secondary beam;

[0024] The length of the sub-beam can be telescopically arranged, and the sub-beam comprises a third telescopic portion;

[0025] Wherein, each telescopic part can be connected via fixing bolts to fix each telescopic part.

[0026] Further,

[0027] The first limiting portion is slidably disposed on the main beam, and the second limiting portion is slidably disposed on the secondary beam;

[0028] The main beam is provided with a plurality of first strip-shaped slots, and the first limiting portion can be fixedly connected to the main beam by connecting bolts passing through the first strip-shaped slots;

[0029] The secondary beam is provided with a plurality of second strip-shaped holes and slots, and the second limiting portion can be fixedly connected to the secondary beam by connecting bolts passing through the second strip-shaped holes and slots.

[0030] Further, the support frame includes a first use state and a second use state;

[0031] The first use state is:

[0032] When the cross-section structure of the steel box girder is arranged vertically, the adapted slot is selected to be anchored on the plate structure of the steel box girder, the main beam is arranged horizontally, the auxiliary beam is used as a supporting leg, and then a temporary platform is set up on the main beams of each adjacent supporting frame;

[0033] The second use state is:

[0034] When the cross-sectional structure of the steel box girder is arranged horizontally, the adapted slot is selected to be anchored on the plate structure of the steel box girder, the auxiliary beam is arranged horizontally, the main beam is used as a supporting leg, and then a temporary platform is set up on the auxiliary beams of each adjacent supporting frame.

[0035] The beneficial effects of this application are:

[0036] The support frame provided by the present application can utilize the end panel structure of the steel box girder as the clamping and fixing point of the clamping slot on the support frame during the splicing and assembly process of the steel box girder, so that the support frame forms a temporary platform on the end face required for construction, so as to facilitate the work of the construction personnel. Several of the support frames are arranged in an array, and a temporary platform can be set up on adjacent support frames. According to the specific conditions of the site, the main beam or the auxiliary beam can be used to set up the temporary platform to ensure that the temporary platform can extend and cover the entire construction section. The support frame has a low manufacturing cost, a high turnover rate, and is easy to install and disassemble, which greatly improves the construction efficiency when splicing steel box girders. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings.

[0038] Figure 1 is a front view of a first use state of a support frame provided by an embodiment of the present invention;

[0039] Figure 2 and Figure 3 is a schematic diagram of the three-dimensional structure of a support frame provided according to an embodiment of the present invention;

[0040] Figure 4 It is a front view of the support frame in the second use state provided by the embodiment of the present invention.

[0041] Among them, 1-main beam, 2-auxiliary beam, 11-first limiting part, 12-second duckbill slot, 13-triangular stiffening plate, 21-second limiting part, 22-first duckbill slot, 23-arc stiffening plate, 24-auxiliary beam stiffening plate. DETAILED DESCRIPTION

[0042] Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, the same elements are represented by the same or similar reference numerals. For the sake of clarity, the various parts in the accompanying drawings are not drawn to scale.

[0043] refer to Figures 1 to 4 The present application provides a support frame for setting up a temporary platform for steel box girder welding operation, comprising: a main beam 1, on which a slot and a first limiting portion 11 are respectively provided; a secondary beam 2, one end of which is connected to the main beam 1, the secondary beam 2 is vertically connected to the main beam 1, and a second limiting portion 21 is provided on the secondary beam 2, wherein the slot can be used to be clamped on the steel box girder, and the main beam 1 or the secondary beam 2 is used to set up a temporary platform.

[0044] In this embodiment, when setting up a temporary platform, at least two support frames can be pre-installed, and then the temporary platform can be set up on two adjacent support frames. It should be understood that a number of support frames can be installed according to the on-site construction area and the required construction volume to ensure that the set-up temporary platform can meet the on-site construction.

[0045] In this embodiment, the slots on the main beam 1 include: a first duckbill slot 22; which is arranged at the first end of the main beam 1; a second duckbill slot 12, which is arranged between the first end and the second end of the main beam 1, and the second duckbill slot 12 is arranged relative to the first duckbill slot 22.

[0046] The second duckbill slot 12 is used in the first use state. Figure 1 In the first usage state, the cross-sectional structure of the steel box girder is arranged vertically, and the height is located in the middle and lower part of the construction section. Therefore, the second duckbill slot 12 can be used as a fixed anchor point and connected to the plate structure of the steel box girder. The main beam 1 is arranged horizontally as a support for setting up a temporary platform, and the secondary beam 2 is used as a supporting leg to provide a more stable support for the main beam 1 and the temporary platform.

[0047] The first duckbill slot 22 is used in the second use state. Figure 4 In the second usage state, the cross-sectional structure of the steel box girder is horizontally arranged, and the height is located at the top of the construction section. Therefore, the first duckbill slot 22 can be used as a fixed anchor point and connected to the plate structure of the steel box girder. The auxiliary beam 2 is horizontally arranged as a support for setting up a temporary platform, and the main beam 1 serves as a supporting leg to provide a more stable support for the auxiliary beam 2 and the temporary platform.

[0048] In this embodiment, the temporary platform can be set up on each support frame using templates, iron sheets or scaffolding boards, etc. After being set up on the support frame, screws, etc. can also be used to achieve fixation and connection.

[0049] The opening direction of the slots on the main beam 1 is perpendicular to the length direction of the main beam 1. It is ensured that the slots can be connected to the plate structure on the steel box beam, and the main beam 1 or the auxiliary beam 2 can be in a horizontal state to set up a temporary platform.

[0050] The main beam 1 is provided with an arc-shaped stiffening plate 23, and the arc-shaped stiffening plate 23 is fixedly connected to the outer groove plate of the first duckbill slot 22. The arc-shaped stiffening plates 23 are arranged in pairs on the main beam 1 and connected to the outer groove plate of the first duckbill slot 22, thereby ensuring the structural strength of the first duckbill slot 22.

[0051] The main beam 1 is provided with a triangular reinforced plate 13, and at least two triangular reinforced plates 13 are respectively connected to the two slot plates of the second duckbill slot 12. The structural strength of the second duckbill slot 12 is guaranteed. A secondary beam reinforced plate 24 is provided between the secondary beam 2 and the main beam 1, which can effectively improve the bending and shear resistance of the secondary beam 2 under force.

[0052] In this embodiment, a tightening bolt is provided on the slot plate of each slot, so that the tightening bolt can pass through the slot plate of each slot and can be used to tighten to the plate structure of the steel box girder, ensuring that the slot can be firmly clamped to the plate structure of the steel box girder through the tightening bolt.

[0053] The length direction of the sub-beam 2 is the same as the opening direction of the second duckbill slot 12, ensuring that when the second duckbill slot 12 is connected to the plate structure of the steel box beam, the sub-beam 2 can serve as a supporting leg, thereby playing a supporting role. The sub-beam 2 is located between the second duckbill slot 12 and the second end of the main beam 1, and a suitable connection position can be selected according to the on-site construction environment during actual assembly.

[0054] In this embodiment, the first limiting portion 11 is fixedly connected to the second end of the main beam 1 and is arranged in an extension direction away from the auxiliary beam 2; the second limiting portion 21 is fixedly connected to the end of the auxiliary beam 2 away from the main beam 1, and is arranged on a side of the auxiliary beam 2 close to the slot.

[0055] The first limiting portion 11 can limit the temporary platform set up on the main beam 1, and the second limiting portion 21 can limit the temporary platform set up on the secondary beam 2. Each limiting portion plays a role in preventing the temporary platform from sliding out of the support frame.

[0056] In an optional embodiment, the length of the main beam 1 can be telescopically set, and the main beam 1 includes: a first telescopic portion, which is arranged between the first end of the main beam 1 and the auxiliary beam 2; a second telescopic portion, which is arranged between the second end of the main beam 1 and the auxiliary beam 2; it should be understood that the telescopic main beam 1 can not only build a wider temporary platform, but also serve as a higher supporting leg when it is in a vertical state.

[0057] The first telescopic part can adjust the height of the temporary platform of the auxiliary beam 2, and can provide a wider or more suitable operating platform for construction workers. The second telescopic part can be used as a supporting leg to adjust the height of the supporting leg, so as to ensure that the supporting leg has sufficient length to meet the required support height.

[0058] The length of the sub-beam 2 can be telescopically set, and the sub-beam 2 includes a third telescopic portion; similarly, the telescopic nature of the third telescopic portion can not only build a wider and more suitable operating platform, but also can be used as a height adjustment for the supporting legs.

[0059] Each telescopic part can be connected by a fixing bolt to fix each telescopic part. It should be understood that each telescopic part includes two tube bodies, and the two tube bodies can be sleeved together. When the two tube bodies move toward each other, the telescopic part shortens. When the two tube bodies move away from each other, the telescopic part lengthens. The relative fixation of the two tube bodies in the telescopic part is achieved by a fixing bolt. The fixing bolt is vertically penetrated through the tank body sleeved on the outside, and the fixing bolt is screwed to make it touch the internal tube body, and the telescopic part is fixed by the friction between the two tube bodies. It should be understood that it is not limited to connecting with one fixing bolt, and several fixing bolts can be provided to ensure the firmness and reliability of the connection.

[0060] In an optional embodiment, the first limiting portion 11 is slidably disposed on the main beam 1, and the second limiting portion 21 is slidably disposed on the secondary beam 2. When the required width of the temporary platform is narrow, the limiting portions are slidably disposed to press against the temporary platform to ensure the position limitation of the temporary platform.

[0061] The main beam 1 is provided with a plurality of first strip-shaped holes and slots, and the first limiting portion 11 can be fixedly connected to the main beam 1 by passing through the first strip-shaped holes and slots with connecting bolts; the sub-beam 2 is provided with a plurality of second strip-shaped holes and slots, and the second limiting portion 21 can be fixedly connected to the sub-beam 2 by passing through the second strip-shaped holes and slots with connecting bolts. It should be understood that the strip-shaped holes and slots are distributed along the length direction of the main beam 1 or the sub-beam 2, and the respective tubes on the telescopic part can also be provided with strip-shaped holes and slots, and the strip-shaped holes and slots on the two tubes can also be used by overlapping.

[0062] In this embodiment, in order to fully improve the use efficiency and performance of the support frame, the relationship and size of each part in the support frame are combined and optimized according to the actual use situation. In addition, the support frame belongs to a single-point force cantilever structure. In the specific implementation, the groove plate thickness, the thickness of the stiffening plate, the form of the stiffening plate and the position of the second duckbill slot 12 used by the first duckbill slot 22 and the second duckbill slot 12 are further determined after force calculation and analysis.

[0063] The support frame provided by the present application can use the end panel structure of the steel box girder as the clamping and fixing point of the clamping slot on the support frame during the splicing and assembly process of the steel box girder, so that the support frame forms a temporary platform on the end face required for construction, so as to facilitate the work of the construction personnel. Several of the support frames are arranged in an array, and a temporary platform can be set up on adjacent support frames. According to the specific conditions of the site, the main beam 1 or the auxiliary beam 2 can be used to set up the temporary platform to ensure that the temporary platform can extend and cover the entire construction section. The support frame has a low manufacturing cost, a high turnover rate, and is easy to install and disassemble, which greatly improves the construction efficiency when splicing steel box girders.

[0064] It should be noted that, in this article, relational terms such as first and second, etc. 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 statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0065] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A support frame used to set up a temporary platform for steel box girder welding operation, characterized in that: include: A main beam, on which a clamping groove and a first limiting portion are respectively provided; A secondary beam, one end of which is connected to the main beam, the secondary beam is vertically connected to the main beam, and a second limiting portion is provided on the secondary beam; Wherein, the slot is used to be clamped on the steel box beam, and the main beam or the auxiliary beam is used to set up a temporary platform; The slots on the main beam include: A first duckbill slot, which is provided at the first end of the main beam; A second duckbill slot is disposed between the first end and the second end of the main beam, the second duckbill slot being disposed opposite to the first duckbill slot; The directions in which the slots on the main beam are opened are perpendicular to the length direction of the main beam; The length direction of the secondary beam is the same as the opening direction of the second duckbill slot; And the auxiliary beam is located between the second duckbill slot and the second end of the main beam.

2. The support frame according to claim 1, characterized in that: An arc-shaped stiffening plate is arranged on the main beam, and the arc-shaped stiffening plate is fixedly connected to the outer groove plate of the first duckbill groove.

3. The support frame according to claim 1, characterized in that: The main beam is provided with triangular stiffening plates, and at least two triangular stiffening plates are respectively connected to the two slot plates of the second duckbill slot.

4. The support frame according to claim 1, characterized in that: The first limiting portion is fixedly connected to the second end of the main beam and is arranged in an extending direction away from the auxiliary beam; The second limiting portion is fixedly connected to the end of the auxiliary beam away from the main beam, and is arranged on a side of the auxiliary beam close to the clamping groove.

5. The support frame according to claim 1, characterized in that: The length of the main beam can be retracted, and the main beam comprises: A first telescopic portion, which is provided between the first end of the main beam and the secondary beam; A second telescopic portion, which is provided between the second end of the main beam and the secondary beam; The length of the sub-beam can be telescopically arranged, and the sub-beam comprises a third telescopic portion; Wherein, each telescopic part can be connected via fixing bolts to fix each telescopic part.

6. The support frame according to claim 5, characterized in that: The first limiting portion is slidably disposed on the main beam, and the second limiting portion is slidably disposed on the secondary beam; The main beam is provided with a plurality of first strip-shaped slots, and the first limiting portion can be fixedly connected to the main beam by connecting bolts passing through the first strip-shaped slots; The secondary beam is provided with a plurality of second strip-shaped holes and slots, and the second limiting portion can be fixedly connected to the secondary beam by connecting bolts passing through the second strip-shaped holes and slots.

7. The support frame according to claim 1, characterized in that: including a first use state and a second use state; The first use state is: When the cross-section structure of the steel box girder is arranged vertically, the adapted slot is selected to be anchored on the plate structure of the steel box girder, the main beam is arranged horizontally, the auxiliary beam is used as a supporting leg, and then a temporary platform is set up on the main beams of each adjacent supporting frame; The second use state is: When the cross-sectional structure of the steel box girder is arranged horizontally, the adapted slot is selected to be anchored on the plate structure of the steel box girder, the auxiliary beam is arranged horizontally, the main beam is used as a supporting leg, and then a temporary platform is set up on the auxiliary beams of each adjacent supporting frame.

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