A prefabricated box girder steel bar binding mould

Abstract

The utility model discloses a prefabricated box girder reinforcement bandaging mould belongs to engineering construction auxiliary facility technical field, including mould and mobile platform, and the mould is located on the mobile platform, and the both sides of mobile platform are equipped with operation table, and the operation table is fixed on the workshop ground, and the top of mobile platform is equipped with crown block. The staff stands above the operation table and places the bent main reinforcement on the mould conveniently, and the crown block is used to position the straightened distribution reinforcement along the length direction of the mould, and the reinforcement cage is formed after being bound and fixed, then the mobile platform is driven to travel along the track on the ground, and the reinforcement cage is moved to the reinforcement framework hoisting area, and the crown block of beam manufacturing area is used to hoist the reinforcement cage to the beam manufacturing pedestal and install. Adopting the utility model can improve construction efficiency greatly, and reduce the labor intensity of staff, and can effectively reduce the restriction of adverse weather environment on work efficiency, is more suitable for the construction environment of southern rainy weather, and avoids the influence of rain on the quality of reinforcement cage.

Description

Technical Field

[0001] This utility model belongs to the technical field of engineering construction auxiliary facilities, and specifically relates to a precast box girder reinforcement binding jig. Background Technology

[0002] Before railway bridge construction, precast box girders are required. Currently, the steel reinforcement binding work for precast box girders is carried out outdoors, and the steel reinforcement is mostly transported by hand, resulting in high labor intensity and low work efficiency. In addition, outdoor operations are easily affected by weather, which affects the construction progress, and the steel reinforcement is also susceptible to corrosion from rainwater; moreover, the working environment is harsh and detrimental to the health of the workers. Utility Model Content

[0003] To address the above problems, this utility model provides a precast box girder reinforcement binding jig.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A precast box girder reinforcement binding jig includes a jig for positioning the box girder reinforcement and a mobile platform that can travel along a track on the workshop floor. The jig is set on the mobile platform. There are operating tables on both sides of the mobile platform, and the operating tables are fixed on the workshop floor. A crane for hoisting the reinforcement is set above the mobile platform.

[0006] Furthermore, the fixture includes fixture I, fixture II, and an inner mold support frame. The inner mold support frame is located in the middle of the moving platform. Fixtures I and II are symmetrically arranged on both sides of the inner mold support frame. The outer surfaces of fixtures I and II are arc-shaped to match the corners on both sides of the box girder. Fixtures I and II are respectively arranged along the two side edges of the moving platform, and the tops of fixtures I and II are flush with the top of the operating platform on their outer sides.

[0007] Furthermore, the top of the inner mold support frame, the outer surfaces of mold I and mold II, and the surface of the moving platform between mold I and mold II are all provided with multi-row and multi-column limiting structures for positioning the main reinforcement and the distribution reinforcement.

[0008] Furthermore, the limiting structure consists of positioning posts arranged in an array.

[0009] Furthermore, the moving platform between jig No. I and jig No. II is equipped with embedded part positioning clamps at both ends for positioning the embedded parts at both ends of the box girder.

[0010] Furthermore, the moving platform between the No. I and No. II jigs is provided with markings for positioning the drilling hose that accommodates the prestressed steel bars.

[0011] Furthermore, both the No. I and No. II fixtures are frame structures.

[0012] Furthermore, the inner mold support frame is a detachable frame structure, which includes multiple crossbeams and multiple columns. The crossbeams are rectangular frames set on top of the columns, and the columns are vertically set on the moving platform. The columns include upper and lower uprights, and the junction of the upper and lower uprights is fixed by clamps.

[0013] Furthermore, the operating platform is equipped with a rebar straightening machine for straightening and cutting rebars; the operating platform is also equipped with a rebar hoisting fixture, which includes a straight pipe and a support rod. The upper part of the support rod is provided with a lifting hole that can hook the hook at the lower end of the overhead crane, and the straight pipe is wrapped with a binding member that can tie the distributed rebars.

[0014] Furthermore, the bottom of the mobile platform is equipped with a power mechanism and two rows of wheels, and the power mechanism can drive the two rows of wheels to travel along the track on the workshop floor.

[0015] The technological advancements achieved by this invention compared to existing technologies are as follows:

[0016] The jig in this invention enables the positioning of the box girder reinforcement bars. Workers, standing on the operating platform, can easily place the bent main reinforcement bars onto the jig. A crane then uses this jig to position the straightened distribution reinforcement bars along the length of the jig, securing them to form a reinforcement cage. A mobile platform is then driven along a track on the ground to move the reinforcement cage to the reinforcement skeleton hoisting area. A crane in the beam fabrication area then hoists the reinforcement cage to the beam fabrication platform for installation. This invention significantly improves construction efficiency and reduces the labor intensity of workers. Simultaneously, it effectively reduces the impact of adverse weather conditions on work efficiency, making it more suitable for rainy construction environments in southern regions and preventing rain from affecting the quality of the reinforcement cage. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0018] In the attached diagram:

[0019] Figure 1 A schematic diagram of the structure of a precast box girder reinforcement binding jig provided in this embodiment of the utility model;

[0020] Figure 2 for Figure 1 Side view of the intermediate fixture;

[0021] Figure 3 for Figure 1 Schematic diagram of the structure of the inner mold support frame;

[0022] Figure 4 for Figure 3 Side view of the inner mold support frame;

[0023] Figure 5 This is a schematic diagram of the steel bar hoisting fixture in an embodiment of this utility model;

[0024] Figure 6 This is a diagram showing the application status of the precast box girder reinforcement binding jig in this embodiment of the present invention.

[0025] In the picture:

[0026] 00-Box girder; 01-Ground; 02-Track; 100-Jig; 101-Jig No. 1; 102-103-1-Mobile platform; 2-Operating table; 3-; 4-; 5-; 6-; 7-; 8-; 9-; 10-; 11-; 12-. Detailed Implementation

[0027] The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this utility model will be described below with reference to the accompanying drawings.

[0028] like Figure 1 , Figure 6 As shown, a precast box girder reinforcement binding jig includes a jig 100 for positioning the box girder reinforcement and a mobile platform 1 that can travel along a track 02 on the workshop floor 01. The jig 100 is mounted on the mobile platform 1. Operating platforms 2 are provided on both sides of the mobile platform 1, and the operating platforms 2 are fixed to the workshop floor. A crane (not shown) is provided above the mobile platform 1 for hoisting the reinforcement. Workers stand on the operating platforms to easily install the bent main reinforcement bars one by one onto the jig. The crane is used to position the straightened distribution reinforcement bars along the length of the jig, and after binding and fixing, a reinforcement cage is formed. Then, the mobile platform is driven to move the reinforcement cage to the reinforcement skeleton hoisting area, and the crane in the beam fabrication area is used to hoist the reinforcement cage to the beam fabrication platform for installation. This solution can significantly improve construction efficiency and reduce labor intensity; at the same time, it can effectively reduce the constraints of harsh weather conditions on work efficiency, making it more suitable for the rainy construction environment in the south.

[0029] In one specific embodiment of this utility model, such as Figure 1 , 2As shown, the fixture 100 includes fixture I 101, fixture II 102, and inner mold support frame 103. The inner mold support frame 103 is located in the middle of the moving platform 1. Fixture I 101 and fixture II 102 are symmetrically arranged on both sides of the inner mold support frame 103. The outer surfaces of fixture I 101 and fixture II 102 are arc-shaped to match the corners on both sides of the box girder 00. Fixture I 101 and fixture II 102 are respectively arranged along the two side edges of the moving platform 1. The tops of fixture I 101 and fixture II 102 are flush with the top of the operating platform 2 on their outer sides. This structure allows workers to stand on the operating platform and place the pre-bent main reinforcement bars along jig 101, mobile platform 1, and jig 102. The main reinforcement bars are made by bending a whole steel bar. After the main reinforcement bars are laid out along jig 101 and jig 102, an inner formwork support frame 103 is erected in the middle of the mobile platform 1, and then the horizontal main reinforcement bars at the top of the inner formwork support frame 103 are laid out.

[0030] As a preferred structure, such as Figure 1 As shown, the top of the inner mold support frame 103, the outer surfaces of jigs I 101 and II 102, and the surface of the moving platform 1 between jigs I 101 and II 102 are all equipped with multi-row, multi-column limiting structures for positioning the main reinforcement and the distribution reinforcement. The limiting structures are positioning columns 104 arranged in an array. Simultaneously, pre-embedded part positioning clamps (not shown in the figure) are provided at both ends of the moving platform 1 between jigs I 101 and II 102 for positioning the pre-embedded parts at both ends of the box girder; markings 105 for accommodating the prestressed steel reinforcement's drilling tubing are provided on the opposite sides of jigs I 101 and II 102 and on the moving platform 1 between them. Positioning columns are used during the reinforcement laying process to ensure that the main reinforcement and distribution reinforcement are evenly laid out. At the same time, the embedded parts are positioned with the help of embedded part positioning clamps, and the prestressed steel reinforcement hole-forming tubes are positioned with the help of markings. During the reinforcement binding process, the hole-forming tubes that contain the prestressed steel reinforcement are positioned to facilitate the tensioning of the prestressed steel reinforcement in the later stage.

[0031] In specific manufacturing, both the No. I mold 101 and the No. II mold 102 are frame structures, and the inner mold support frame 103 is a detachable frame structure, such as... Figure 1-4 As shown. The frame structure of the fixture reduces the overall weight and the load on the mobile platform. Figure 3 , 4As shown, the inner formwork support frame 103 includes multiple horizontal beams 1031 and multiple vertical columns 1032. The horizontal beams 1031 are rectangular frames set on top of the columns 1032, and the columns 1032 are vertically set on the moving platform 1. Each column 1032 includes an upper vertical pipe and a lower vertical pipe, and the junction of the upper and lower vertical pipes is connected and fixed by a clamp 1033. The columns adopt a split structure, which facilitates the removal of the inner formwork support frame after the reinforcement cage construction is completed.

[0032] To further optimize the above solution, the operating platform 2 is equipped with a rebar straightening machine (not shown in the figure) for straightening and cutting the rebars; such as Figure 5 As shown, the operating platform 2 is also equipped with a rebar hoisting fixture 3. The rebar hoisting fixture 3 includes a straight pipe 31 and a support rod 32. The upper part of the support rod 32 is provided with a lifting hole 30 that can hook the hook at the lower end of the overhead crane. The two sides of the support rod 32 are connected to the straight pipe 31 by reinforcing ribs 33 respectively. The straight pipe 31 is wrapped with a binding member 34 for binding the distribution rebars. The binding member can be an iron chain. Before operation, the φ12 coiled wire used to make the distribution rebars is straightened using a rebar straightening machine and cut according to the design length, and then placed along the length direction of the operating platform. The straightened distribution rebars are bound and fixed to the straight pipe. The straight pipe can be used to prevent the distribution rebars from bending. The overhead crane is used to move the rebar hoisting fixture carrying the distribution rebars to the corresponding position on the jig. The overhead crane hoists the rebars, replacing the original manual carrying mode, which greatly improves construction efficiency and reduces the labor intensity of the workers.

[0033] In specific implementation, such as Figure 1 , 6 As shown, the bottom of the mobile platform 1 is equipped with a power mechanism (not shown) and two rows of wheels 4. The power mechanism drives the two rows of wheels 4 to travel along the track 01 on the workshop floor. Using this structure, the mobile platform can move the jig between the binding area and the hoisting area according to construction requirements. In the binding area, the reinforcing bars are positioned and bound. The resulting reinforcing cage is moved to the hoisting area with the mobile platform, and then the overhead crane in the beam fabrication area is used to hoist the reinforcing cage onto the beam fabrication platform for installation. Furthermore, depending on the workshop area, two or more mobile platforms can be arranged, and two or more sets of jigs can be used simultaneously for reinforcing bar binding, further improving construction efficiency.

[0034] In summary, this utility model has the advantages of simple and compact structure and convenient and quick construction. By using an overhead crane to hoist the reinforcing bars, it solves the drawback of having to carry the long, distributed reinforcing bars on people's backs and shoulders, reducing the labor intensity of workers. The use of a mobile platform to drive the jig and reinforcing cage to move between the binding area and the hoisting area can significantly improve construction efficiency and reduce manpower. At the same time, it can effectively reduce the constraints of harsh weather conditions on work efficiency, making it more suitable for the rainy construction environment in the south, avoiding rain on the reinforcing cage, ensuring the quality of the reinforcing cage, and ultimately ensuring the construction quality of the box girder.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A precast box girder reinforcement binding jig, characterized in that: It includes a jig for positioning the reinforcing bars of the box girder and a mobile platform that can travel along a track on the workshop floor. The jig is set on the mobile platform. There are operating tables on both sides of the mobile platform, and the operating tables are fixed on the workshop floor. A crane for hoisting the reinforcing bars is set above the mobile platform.

2. The precast box girder reinforcement binding jig according to claim 1, characterized in that: The fixture includes fixture I, fixture II, and an inner mold support frame. The inner mold support frame is located in the middle of the moving platform. Fixtures I and II are symmetrically arranged on both sides of the inner mold support frame. The outer surfaces of fixtures I and II are arc-shaped to match the corners on both sides of the box girder. Fixtures I and II are respectively arranged along the two side edges of the moving platform, and the tops of fixtures I and II are flush with the top of the operating platform on their outer sides.

3. The precast box girder reinforcement binding jig according to claim 2, characterized in that: The top of the inner mold support frame, the outer surfaces of mold I and mold II, and the surface of the moving platform between mold I and mold II are all provided with multi-row and multi-column limiting structures for positioning the main reinforcement and the distribution reinforcement.

4. The precast box girder reinforcement binding jig according to claim 3, characterized in that: The limiting structure consists of positioning columns arranged in an array.

5. The precast box girder reinforcement binding jig according to claim 2, characterized in that: The moving platform between jig No. I and jig No. II is equipped with embedded part positioning clamps at both ends for positioning the embedded parts at both ends of the box girder.

6. The precast box girder reinforcement binding jig according to claim 2, characterized in that: Markings for positioning the drilling hoses used to accommodate prestressed steel bars are provided on the opposite sides of jig I and jig II and on the moving platform between them.

7. The precast box girder reinforcement binding jig according to claim 2, characterized in that: Both the No. I and No. II molds are frame structures, and the inner mold support frame is a detachable frame structure.

8. The precast box girder reinforcement binding jig according to claim 7, characterized in that: The inner mold support frame includes multiple crossbeams and multiple columns. The crossbeams are rectangular frames set on top of the columns, and the columns are vertically set on the moving platform. The columns include upper and lower uprights, and the junction of the upper and lower uprights is connected and fixed by clamps.

9. The precast box girder reinforcement binding jig according to claim 1, characterized in that: The operating platform is equipped with a rebar straightening machine for straightening and cutting rebars; the operating platform is also equipped with a rebar hoisting fixture, which includes a straight pipe and a support rod. The upper part of the support rod is provided with a lifting hole that can hook the hook at the lower end of the overhead crane, and the straight pipe is wrapped with a binding member that can tie the distribution bars.

10. A precast box girder reinforcement binding jig according to any one of claims 1-9, characterized in that: The bottom of the mobile platform is equipped with a power mechanism and two rows of wheels. The power mechanism can drive the two rows of wheels to travel along the track on the workshop floor.

Images