Overturn-preventing bracket for inner mold of prefabricated box girder

Abstract

The utility model relates to the field of railway bridge construction, in particular to a prefabricated box girder inner mold overturn-preventing bracket which comprises a bracket main beam, a bracket base and supporting legs. The supporting legs are arranged at the two ends of the bracket main beam respectively, one end of each supporting leg is connected with the bracket main beam, and the other end of each supporting leg is connected with the bracket base. The multiple prefabricated box girder inner mold overturn-preventing brackets are arranged below a prefabricated box girder inner mold, and the length of the bracket main beam is larger than the width of the prefabricated box girder inner mold. The device is stable in structure, convenient to machine, convenient to transfer and transport, free of occupying too much on-site construction production space, flexible in application and capable of providing effective safety guarantee for the site according to different operation working conditions and further ensuring on-site safety production.

Description

Technical Field

[0001] This utility model relates to the field of railway bridge construction, specifically to a precast box girder inner mold anti-tipping bracket. Background Technology

[0002] Box girders are a type of beam used in bridge engineering. They are hollow, resembling a box, and are prefabricated on a separate site. Combined with a bridge erecting machine, they can be erected after the substructure is completed, accelerating the project and saving time. High-speed railway prefabricated box girders can be centrally prefabricated in factories, allowing for rapid transport and erection to form bridges, further speeding up bridge construction.

[0003] Precast box girders are now widely used in high-speed railway bridge projects. The construction technology of various processes for large railway box girders has gradually matured. Ensuring on-site safe production and eliminating safety hazards are the key areas that need to be improved and controlled in the next step.

[0004] During the production of precast box girders, the movement of the inner mold is generally controlled by a winch and a traveling system. After demolding, it is often temporarily stored using a fixed concrete bracket or a steel structure bracket. However, regardless of whether it is in the traveling state or the storage state, there is a risk of tipping over on site, and the tooling will also be damaged to a great extent.

[0005] Therefore, there is an urgent need for a precast box girder inner formwork anti-tipping bracket to eliminate on-site safety hazards. Utility Model Content

[0006] To overcome the problems existing in the prior art, the purpose of this utility model is to provide an anti-tipping bracket for the inner mold of a precast box girder.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a precast box girder inner formwork anti-overturning bracket, comprising a bracket main beam, a bracket base, and support legs; the support legs are respectively provided at both ends of the bracket main beam, one end of the support leg is connected to the bracket main beam, and the other end is connected to the bracket base;

[0008] Several of the aforementioned precast box girder inner mold anti-tipping brackets are arranged below the precast box girder inner membrane, and the length of the main beam of the bracket is greater than the width of the precast box girder inner membrane.

[0009] The present invention is further configured such that the length direction of the bracket base is perpendicular to the length direction of the bracket main beam.

[0010] The present invention is further configured such that the anti-overturning bracket of the precast box girder inner mold also includes a leg brace, the leg brace is respectively disposed on both sides of the leg, one end of the leg brace is connected to the leg, and the other end is connected to the bracket base.

[0011] Adding diagonal braces to both sides of the outriggers creates a triangular support structure formed by the outriggers and the bracket base, making the structure more stable.

[0012] The present invention is further configured such that: the anti-overturning bracket of the precast box girder inner mold also includes a main beam diagonal brace, one end of the main beam diagonal brace is connected to the support leg, and the other end is connected to the bracket main beam.

[0013] Adding diagonal bracing to the main beam creates a triangular support structure between the outriggers and the main beam bracket, increasing the overall structural stability.

[0014] This utility model is further configured such that: the bracket base is made of channel steel, and the support legs and support leg braces are welded into the grooves of the channel steel. This increases the contact area with the ground, improves the stability of the anti-tipping bracket for the precast box girder inner formwork, and reduces the overall weight of the structure.

[0015] The present invention is further configured such that the main beam of the bracket is a cross-section hollow beam structure made of channel steel welded together.

[0016] The present invention is further configured such that the support leg is a hollow support leg structure with a rectangular cross-section, formed by welding together channel steel.

[0017] The anti-tipping bracket for the inner formwork of the precast box girder is installed at the bottom of the inner formwork. Under normal conditions, the anti-tipping bracket does not contact the inner formwork, and the length of the main beam of the bracket is greater than the width of the inner formwork. During temporary storage, if the inner formwork tilts to one side, the anti-tipping bracket can promptly support and secure it, preventing it from directly tipping over and sliding to the ground, thus avoiding a safety accident and significant damage to the tooling. During travel, the end anti-tipping bracket can also be moved to the front of the traveling frame for temporary placement, similarly preventing it from tipping forward and falling to the ground.

[0018] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0019] This utility model provides a precast box girder inner mold anti-tipping bracket, which is structurally stable, easy to process, and convenient to transport and relocate. It does not occupy too much on-site construction and production space, and is flexible in application. It can provide effective safety protection for the site according to different working conditions, and further ensure safe production on site. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is the front view of the anti-tipping bracket for the inner formwork of the precast box girder.

[0022] Figure 2 Left view of the anti-tipping bracket for the inner formwork of the precast box girder.

[0023] Figure 3 This is a schematic diagram of the anti-tipping bracket for the inner formwork of a precast box girder being used during the temporary storage of the inner formwork.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 100. Anti-tipping bracket for precast box girder inner formwork; 101. Main beam of bracket; 102. Support leg; 103. Support leg diagonal brace; 104. Diagonal brace of main beam; 105. Bracket base; 200. Inner formwork of precast box girder; 210. Storage bracket. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments of this utility model, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this utility model. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the scope of this utility model.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0028] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0029] Example:

[0030] like Figures 1-2 As shown in the preferred embodiment of this utility model, a precast box girder inner mold anti-tipping bracket includes a bracket main beam 101, a bracket base 105, and support legs 102; the support legs 102 are respectively provided at both ends of the bracket main beam 101, one end of the support leg 102 is connected to the bracket main beam 101, and the other end is connected to the bracket base 105;

[0031] Several anti-tipping brackets 100 of the precast box girder inner mold are evenly spaced below the precast box girder inner mold 200, and the length of the main beam 101 of the bracket is greater than the width of the precast box girder inner mold 200. The length direction of the bracket base 105 is perpendicular to the length direction of the main beam 101 of the bracket.

[0032] The precast box girder inner formwork anti-tipping bracket 100 also includes diagonal support legs 103, which are respectively disposed on both sides of the support leg 102. One end of each diagonal support leg 103 is connected to the support leg 102, and the other end is connected to the bracket base 105. Adding diagonal support legs 103 on both sides of the support leg 102 makes the support structure formed by the support leg 102 and the bracket base 105 triangular, resulting in a more stable structure.

[0033] The precast box girder inner formwork anti-tipping bracket 100 also includes a main beam diagonal brace 104, one end of which is connected to the support leg 102, and the other end is connected to the bracket main beam 101. Adding the main beam diagonal brace 104 creates a triangular support structure between the support leg 102 and the main beam bracket 101, increasing the overall structural stability.

[0034] The bracket base 105 is made of channel steel, and the support legs 102 and support leg braces 103 are welded into the grooves of the channel steel. This increases the contact area with the ground, improves the stability of the anti-tipping bracket 100 of the precast box girder inner formwork, and reduces the overall weight of the structure.

[0035] The main beam 101 of the bracket is a rectangular hollow beam structure made of welded channel steel. The support leg 102 is a rectangular hollow support leg structure made of welded channel steel.

[0036] In actual use, such as Figure 3 As shown, this embodiment takes the temporary storage of a 32.6m long precast box girder inner mold 200 as an example. Five steel structure brackets are used as storage brackets 210 for temporary storage. The net space between the steel structure brackets is 7m. A set of precast box girder inner mold anti-tipping brackets 100 is set in the middle position between two steel structure brackets. That is, the spacing between the precast box girder inner mold anti-tipping brackets 100 is 7m, and the distance between the precast box girder inner mold anti-tipping brackets 100 and the end storage rack is 3.5m. The height of the anti-tipping bracket 100 of the inner formwork of a single precast box girder is 1.25m, the main beam 101 of the bracket is 4.6m long, and the base 105 of the bracket is 1.1m wide. The main beam 101 of the bracket is composed of double-welded #16 channel steel, and the two side legs 102 are composed of double-limb welded #16 channel steel. The main beam 101 and the two sides of the legs 102 are fixed with #12 channel steel as diagonal bracing. The base 105 of the bracket is made of #20 channel steel.

[0037] If the precast box girder inner mold 200 tilts to the left or right while in storage, the precast box girder inner mold anti-tipping bracket 100 can promptly support and fix the precast box girder inner mold 200, preventing it from tilting and sliding directly to the ground, causing a safety accident and significant damage to the tooling.

[0038] In addition, when the precast box girder inner formwork 200 is in the traveling state, it can be set on the traveling frame, and the end precast box girder inner formwork anti-overturning bracket 100 can be moved to the front of the traveling frame for temporary placement to prevent the precast box girder inner formwork 200 from overturning forward and falling to the ground.

[0039] Finally, it should be noted that the above-described embodiments only illustrate one or more implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be pointed out that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A precast box girder inner form anti-overturning bracket, characterized in that, The support frame comprises a support beam, a support base and a support leg; the support beam is provided with the support leg at both ends; one end of the support leg is connected with the support beam, and the other end is connected with the support base; A plurality of the support frames are arranged below the inner membrane of the precast box girder, and the length of the support beam is greater than the width of the inner membrane of the precast box girder.

2. The anti-overturning bracket for a precast box girder inner formwork according to claim 1, characterized in that, The length direction of the support base is perpendicular to the length direction of the support beam.

3. The anti-overturning bracket for a precast box girder inner form as claimed in claim 2, wherein, The support frame further comprises a support leg brace, which is arranged on both sides of the support leg; one end of the support leg brace is connected with the support leg, and the other end is connected with the support base.

4. The anti-overturning bracket for a precast box girder inner form according to claim 1, wherein, The support frame further comprises a support beam brace, one end of which is connected with the support leg, and the other end is connected with the support beam.

5. The precast box girder inner form anti-overturning bracket according to claim 3, characterized in that, The support base is a channel steel, and the support leg and the support leg brace are welded in the groove of the channel steel.

6. The anti-overturning bracket for a precast box girder inner form as claimed in claim 1, wherein, The support beam is a rectangular hollow cross-section beam structure formed by welding channel steels.

7. The anti-overturning bracket for a precast box girder inner form as claimed in claim 1, wherein, The support leg is a rectangular hollow cross-section support leg structure formed by welding channel steels.

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