Box girder pre-assembled inner frame

Abstract

The utility model relates to the field of bridge engineering construction equipment, concretely relates to a box girder pre -zha neirang, its characterized in that, including mounting frame, the mounting frame top is set up with construction platform, the both sides of construction platform articulate have extension frame, the extension frame can turn over around articulated point, the box girder pre -zha neirang still includes the bracing piece, the bracing piece one end with mounting frame swing joint, the other end with extension frame swing joint, through the articulation of extension frame and construction platform makes the construction site can need according to single, double -line box girder to the posture of extension frame adjusts, has reduced the construction cost, improved construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering construction equipment, and in particular to a pre-stitched inner frame for box girders. Background Technology

[0002] Existing box girders include single-track box girders and double-track box girders. During construction, both single-track and double-track box girders require pre-tying of reinforcing bars. However, traditional reinforcing bar tying processes are inefficient, highly dependent on manual labor, and difficult to control in terms of quality. Currently, box girder tying is carried out manually by erecting internal scaffolds inside the box girder. However, existing internal scaffolds are only used for single-track or double-track box girder construction, which cannot accommodate the construction requirements of different types of box girders. This leads to the need to frequently change the internal scaffold structure on the construction site according to different box girder types, which not only increases construction costs but also reduces construction efficiency. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of existing internal scaffolding for pre-tying steel bars in box girders, which cannot be compatible with the construction requirements of single and double-line box girders. This leads to the need to frequently change the internal scaffolding structure on the construction site according to the type of box girder, which not only increases construction costs but also reduces construction efficiency. This utility model provides a pre-tying internal scaffolding for box girders.

[0004] In a first aspect, the present invention provides a pre-stitched inner frame for box girders, including an installation frame, a construction platform erected above the installation frame, and extension frames hinged to both sides of the construction platform, the extension frames being able to rotate around the hinge points;

[0005] The pre-stitched inner frame of the box girder also includes a support rod, one end of which is movably connected to the mounting frame and the other end of which is movably connected to the extension frame.

[0006] This utility model provides a pre-stitched inner frame for box girders. A construction platform is installed on the mounting frame, allowing construction workers to work on the platform. The construction platform is hinged to an extension frame, which can be folded around the hinge point, thus expanding the original construction platform. Support rods are also provided to support the extension frame, preventing it from becoming unstable after unfolding. In this utility model, through the hinge between the construction platform and the extension frame, when tying reinforcement for a single-line box girder, the extension frame flips downwards around the hinge point, placing it below the construction platform, allowing workers to tie reinforcement for the single-line box girder on the platform. When tying reinforcement for a double-line box girder, the extension frame flips around the hinge point to be horizontal with the construction platform, expanding the construction area and enabling reinforcement tying for double-line box girders. The hinge between the extension frame and the construction platform allows for adjustment of the extension frame's posture on-site according to different box girder types, reducing construction costs and improving construction efficiency.

[0007] Preferably, the support rod includes a sleeve, and the sleeve is provided with a first threaded portion and a second threaded portion. The first threaded portion is connected to a first threaded rod, and the second threaded portion is connected to a second threaded rod.

[0008] The thread direction of the first threaded portion is opposite to that of the thread direction of the second threaded portion.

[0009] Preferably, the mounting frame is provided with a first hinge seat, which is connected to the first threaded rod, and the extension frame is provided with a second hinge seat, which is connected to the second threaded rod.

[0010] By setting the first hinge seat and the second hinge seat, the connection stability between the entire strut and the mounting frame and extension frame can be improved.

[0011] Preferably, the mounting bracket has support platforms on both sides, and the second hinge seat is fixedly connected to the support platforms.

[0012] Preferably, one end of the extension frame is provided with a pin hole, and the construction platform is provided with a mating hole that mates with the pin hole. The pin hole and the mating hole are connected by a pin shaft.

[0013] The extension frame and the construction platform are hinged by inserting a pin into the pin hole and the mating hole. This design simplifies the structure and allows for quick disassembly and assembly when the extension frame is not in use or needs to be replaced, thus improving construction efficiency.

[0014] Preferably, a lower beam is provided below the mounting frame, and a lifting device is provided between the mounting frame and the lower beam, the lifting device being used to drive the mounting frame to move up and down.

[0015] The installation frame is raised and lowered by a lifting device, which facilitates the binding of steel bars at different heights during construction and improves construction efficiency.

[0016] Preferably, one end of the lifting device is connected to the mounting frame and the other end is connected to the lower beam.

[0017] Preferably, the lifting device includes a hydraulic cylinder and an oil pump. The oil pump controls the hydraulic cylinder, thereby realizing the lifting of the mounting frame.

[0018] Preferably, the mounting frame has several legs at the bottom, and the legs are hollow structures. The side of the lower beam facing the mounting frame has a vertical rod, and the inner wall of the leg is sleeved on the outer wall of the vertical rod.

[0019] Preferably, the bottom of the lower beam is slidably connected to a base, and the lower beam is configured to slide along the base.

[0020] Preferably, the lower beam has a slide bar on the side facing the base, and the top of the base has a roller adapted to the slide bar.

[0021] The lower beam slides in the direction the slide bar opens by working with the rollers. The rollers reduce friction when the lower beam slides relative to the base.

[0022] Preferably, the base is equipped with a geared motor, and a gear is connected to the geared motor.

[0023] The lower beam is also provided with a rack on the side facing the base, and the rack meshes with the gear.

[0024] The gear is driven to rotate by a geared motor. Since the gear meshes with the rack, the rotation of the gear synchronously drives the lower beam, which is equipped with a rack, to move.

[0025] Preferably, the geared motor is fixedly connected to the base, and the base is fixedly connected to the ground.

[0026] Preferably, the module of the gear matches the module of the rack to improve the accuracy of meshing.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0028] 1. This utility model provides a pre-stitched inner frame for box girders. A construction platform is installed on the mounting frame, allowing construction workers to work on the platform. The construction platform is hinged to an extension frame, which can be folded around the hinge point, thus expanding the original construction platform. Support rods are also provided to support the extension frame, preventing it from becoming unstable after unfolding. In this utility model, through the hinge between the construction platform and the extension frame, when tying reinforcement for a single-line box girder, the extension frame flips downwards around the hinge point, placing it below the construction platform, allowing workers to tie reinforcement for the single-line box girder on the platform. When tying reinforcement for a double-line box girder, the extension frame flips around the hinge point to be horizontal with the construction platform, expanding the construction area and enabling reinforcement tying for double-line box girders. The hinge between the extension frame and the construction platform allows for adjustment of the extension frame's posture on-site according to different box girder types, reducing construction costs and improving construction efficiency. Attached Figure Description

[0029] Figure 1 This is a structural diagram of the pre-stacked inner frame of the box girder of this utility model without the geared motor connected;

[0030] Figure 2 This is a structural diagram of the strut in this utility model;

[0031] Figure 3 This is a structural diagram of the sleeve in this utility model;

[0032] Figure 4 This is a schematic diagram of the extension frame in this utility model;

[0033] Figure 5 This is a schematic diagram of the construction platform in this utility model;

[0034] Figure 6 This is a schematic diagram of the pre-stitched inner frame of the box girder in this utility model;

[0035] Figure 7 In this utility model Figure 6 Enlarged view of point A.

[0036] The markings in the diagram are: 1-mounting bracket; 11-first hinge seat; 12-support platform; 2-construction platform; 21-mating hole; 3-extension frame; 31-second hinge seat; 32-pin hole; 4-strut; 41-sleeve; 411-first threaded part; 412-second threaded part; 42-first threaded rod; 43-second threaded rod; 5-lower beam; 51-slide rod; 52-rack; 6-lifting device; 7-base; 71-roller; 72-gear motor; 73-gear. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0038] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0039] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0040] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0041] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0042] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0043] Example 1

[0044] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The diagram shows a pre-reinforcement frame for box girders, including an installation frame 1. The installation frame 1 has a construction platform 2 on its top, which is used for reinforcing bar binding of single-line box girders. The installation frame 1 has connecting sections on both sides, and the installation frame 1 is hinged to an extension frame 3 through the connecting sections. The extension frame 3 has an unfolded posture that is horizontal with the connecting section after flipping around the hinge point, and a reset posture that flips around the hinge point and toward the installation frame 1 (when the extension frame 3 is in the unfolded posture, it acts as an extension platform of the construction platform 2, widening the construction area so that reinforcing bar binding of double-line box girders can be performed).

[0045] Furthermore, the pre-stitched inner frame of the box girder also includes a strut 4. One end of the strut 4 is movably connected to the mounting frame 1, and the other end is movably connected to the extension frame 3. The strut 4 can support the extension frame 3 in its unfolded state, preventing the extension frame 3 from becoming loose.

[0046] In one or more embodiments, the strut 4 includes a sleeve 41, within which a first threaded portion 411 and a second threaded portion 412 are provided. The first threaded portion 411 is connected to a first threaded rod 42, and the second threaded portion 412 is connected to a second threaded rod 43. The thread direction of the first threaded portion 411 is opposite to that of the thread direction of the second threaded portion 412. Figure 2 and Figure 3 As shown.

[0047] In one or more embodiments, the mounting frame 1 is provided with a first hinge seat 11, which is connected to the first threaded rod 42. The extension frame 3 is provided with a second hinge seat 31, which is connected to the second threaded rod 43. The arrangement of the first hinge seat 11 and the second hinge seat 31 improves the connection stability between the entire support rod 4 and the mounting frame 1 and the extension frame 3. Figure 1 As shown.

[0048] In one or more embodiments, the mounting bracket 1 has support platforms 12 on both sides, and the second hinge seat 31 is fixedly connected to the support platform 12, such as... Figure 1 As shown.

[0049] In one or more embodiments, one end of the extension frame 3 is provided with a pin hole 32, and the connecting section is provided with a mating hole 21 that mates with the pin hole 32. The pin hole 32 and the mating hole 21 are connected by a pin. The extension frame 3 and the connecting section are hinged by inserting the pin hole 32 into the mating hole 21. This design simplifies the structure and allows for quick disassembly and assembly when the extension frame 3 is not in use or needs to be replaced, thus improving construction efficiency. Figure 1 , Figure 4 and Figure 5 As shown.

[0050] In one or more embodiments, a lower beam 5 is provided below the mounting frame 1, and a lifting device 6 is provided between the mounting frame 1 and the lower beam 5. The lifting device 6 can be used to drive the mounting frame 1 to lift. One end of the lifting device 6 is connected to the mounting frame 1 and the other end is connected to the lower beam 5. The lifting device 6 drives the mounting frame 1 to lift, which facilitates the binding of steel bars at different heights during construction and improves construction efficiency.

[0051] Furthermore, the lifting device 6 includes a hydraulic cylinder and an oil pump. The oil pump controls the hydraulic cylinder, thereby realizing the lifting of the mounting frame 1.

[0052] Furthermore, the mounting frame 1 has several supporting legs at its bottom, and these legs are hollow. The lower beam 5 has a vertical rod on the side facing the mounting frame 1. The inner wall of the supporting leg is fitted onto the outer wall of the vertical rod, as shown below. Figure 1 and Figure 6 As shown.

[0053] In one or more embodiments, the bottom of the lower beam 5 is slidably connected to the base 7, the side of the lower beam 5 facing the base 7 is provided with a slide rod 51, and the top of the base 7 is provided with a roller 71 adapted to the slide rod 51. By cooperating with the slide rod 51 and the roller 71, the lower beam 5 can slide in the opening direction of the slide rod 51. By setting the roller 71, the friction can be reduced when the lower beam 5 slides relative to the base 7.

[0054] Furthermore, the contact surface between the roller 71 and the slide bar 51 is a groove-shaped structure surface;

[0055] Furthermore, the base 7 is equipped with a reduction motor 72, on which a gear 73 is connected. The lower beam 5 facing the base 7 also has a rack 52, which meshes with the gear 73. The reduction motor 72 drives the gear 73 to rotate. Because the gear 73 meshes with the rack 52, when the gear 73 rotates, it synchronously drives the lower beam 5, on which the rack 52 is located, to move. Figure 1, Figure 6 and Figure 7 As shown.

[0056] In one or more embodiments, the geared motor 72 is fixedly connected to the base 7, the base 7 is fixedly connected to the ground, and the module of the gear 73 matches the module of the rack 52 to improve the meshing accuracy. Figure 7 As shown.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pre-stitched inner frame for box girders, characterized in that, It includes an installation frame (1), a construction platform (2) is erected on top of the installation frame (1), and extension frames (3) are hinged on both sides of the construction platform (2). The extension frames (3) can be rotated around the hinge points. The pre-stitched inner frame of the box girder also includes a support rod (4), one end of which is movably connected to the mounting frame (1) and the other end of which is movably connected to the extension frame (3).

2. The pre-stitched inner frame for box girders according to claim 1, characterized in that, The extension frame (3) has a pin hole (32) at one end, and the construction platform (2) has a mating hole (21) that mates with the pin hole (32). The pin hole (32) and the mating hole (21) are connected by a pin.

3. The pre-staffing for box girder according to claim 1, characterized in that, The support rod (4) includes a sleeve (41), and the sleeve (41) is provided with a first threaded part (411) and a second threaded part (412). The first threaded part (411) is connected to a first threaded rod (42), and the second threaded part (412) is connected to a second threaded rod (43). The thread direction of the first threaded portion (411) is opposite to that of the thread direction of the second threaded portion (412).

4. The pre-staffing system for box girders according to claim 3, characterized in that, The mounting frame (1) is provided with a first hinge seat (11), which is connected to the first threaded rod (42). The extension frame (3) is provided with a second hinge seat (31), which is connected to the second threaded rod (43).

5. The pre-staffing system for box girders according to claim 4, characterized in that, The mounting bracket (1) has support platforms (12) on both sides, and the second hinge seat (31) is fixedly connected to the support platform (12).

6. A pre-stitched inner frame for box girders according to any one of claims 1-5, characterized in that, The mounting frame (1) is provided with a lower beam (5) below it, and a lifting device (6) is provided between the mounting frame (1) and the lower beam (5). The lifting device (6) can be used to drive the mounting frame (1) to lift.

7. The pre-staffing for box girder according to claim 6, characterized in that, The lifting device (6) is connected at one end to the mounting frame (1) and at the other end to the lower beam (5).

8. The pre-staffing system for box girders according to claim 6, characterized in that, The bottom of the lower beam (5) is slidably connected to a base (7), and the lower beam (5) is configured to slide along the base (7).

9. The pre-staffing for box girder according to claim 8, characterized in that, The lower beam (5) has a slide rod (51) on the side facing the base (7), and the top of the base (7) has a roller (71) adapted to the slide rod (51).

10. The pre-staffing for box girder according to claim 9, characterized in that, The base (7) is equipped with a geared motor (72), and a gear (73) is connected to the geared motor (72). The lower beam (5) is also provided with a rack (52) on the side facing the base (7). The rack (52) meshes with the gear (73). The lower beam (5) slides along the base (7) through the meshing of the gear (73) and the rack (52).

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