Guide beam structure with variable rotating angle and movable formwork

Abstract

The invention relates to a guide beam structure with a variable rotating angle and a movable formwork, the guide beam structure is arranged between a main beam (1) and a front auxiliary supporting leg (2), and the guide beam structure comprises a plurality of sections of repeating units which are connected in sequence; each repeating unit is of a frame structure and comprises four I-shaped beams which are arranged up and down and serve as axial stress components. Wherein the repeating unit connected with the main beam is a rotatable unit (3); in the rotatable unit, a first I-shaped beam (31) and a second I-shaped beam (32) on one side in the length direction of the guide beam structure are cut off from the middle, and the cut-off positions on the two sides are connected through a telescopic hydraulic rod (35); the third I-shaped beam (33) and the fourth I-shaped beam (34) on the other side in the length direction of the guide beam structure are cut off from the middle, and the cut-off positions on the two sides are connected in a hinged mode. Compared with the prior art, the continuous change of the corner of the guide beam structure meets the construction requirement of a movable formwork for a curved bridge.

Description

Technical Field

[0001] The invention belongs to the technical field of civil engineering, and in particular relates to a guide beam structure with variable turning angle and a movable formwork. Background Art

[0002] A mobile formwork is a device used in cast-in-place concrete bridge construction that is able to move along the piers or abutments during the bridge construction process to pour concrete and form the various sections of the bridge.

[0003] Existing mobile formwork can only be used for straight or slightly curved bridge construction, and cannot meet the needs of cast-in-place concrete bridge construction under certain curved conditions. In actual applications, there are problems such as high safety risks, difficult construction quality control, slow progress, high costs, and reduced efficiency of personnel and machinery.

[0004] The existing method for mobile formwork to adapt to curved construction is mainly to place wedge blocks between the guide beam and the main beam when the mobile formwork is still being assembled, so that an angle appears between the guide beam axis and the mobile formwork axis. This method can only determine the angle when the mobile formwork is being built, and it is difficult to change it later. If it is to be changed, it is necessary to dismantle the connection between the main beam of the mobile formwork and the guide beam, replace or remove the wedge blocks, and then connect the main beam and the guide beam to achieve the angle change. The construction is extremely inconvenient, and the problem of difficulty in turning the guide beam of the mobile formwork has not been solved.

[0005] Therefore, the guide beam structure of the mobile formwork still needs to be improved to meet the construction requirements of the mobile formwork for curved bridges. Summary of the invention

[0006] The purpose of the present invention is to provide a guide beam structure with variable turning angle and a movable formwork in order to meet the construction requirements of the movable formwork for curved bridges.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] The present invention provides a guide beam structure with a variable rotation angle, which is arranged between a main beam and a front auxiliary leg, and the guide beam structure comprises a plurality of repeated units connected in sequence;

[0009] The repeating units are all frame structures, each including four I-beams as axial force-bearing members;

[0010] The repeating unit connected to the main beam is a rotatable unit; in the rotatable unit, the first I-beam and the second I-beam on one side along the length direction of the guide beam structure are both cut off, and the cut-off parts on both sides are connected by a retractable hydraulic rod;

[0011] The third I-beam and the fourth I-beam on the other side of the guide beam structure in the length direction are both cut off, and the cut off parts on both sides are hingedly connected.

[0012] Furthermore, I-beam connection points are provided on both sides of the cutoff points of the first I-beam and the second I-beam.

[0013] Furthermore, the cylinder barrel of the hydraulic rod is connected to an I-beam connection point on one side, and the piston rod of the hydraulic rod is hinged to an I-beam connection point on the other side.

[0014] Furthermore, an inclined truss beam is connected between the I-beam connection point connected to the cylinder barrel and the I-beam on the same horizontal side.

[0015] Furthermore, the truncated parts of the third I-beam and the fourth I-beam are movably hinged through hinged seats.

[0016] Furthermore, adjacent I-beams are connected by horizontal, vertical or inclined trusses.

[0017] Furthermore, the last section of the repeating unit away from the main beam is connected to the variable cross-section section connected to the front auxiliary supporting leg.

[0018] Furthermore, the number of the repeating units is 3-5 segments.

[0019] Furthermore, the length of the repeating unit is 10-12m.

[0020] The invention also provides a movable mold frame comprising a guide beam structure with a variable rotation angle.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The guide beam structure of the present invention is cleverly designed with a single-sided hydraulic rod and a single-sided hinged connection. The guide beam structure can be rotated to a certain angle by controlling the stroke of the hydraulic rod to achieve continuous change of the guide beam structure rotation angle, thereby meeting the construction requirements of the mobile formwork for curved bridges.

[0023] (2) Compared with the traditional wedge block, the guide beam structure of the present invention does not need to remove the wedge block when the angle needs to be changed, and then connect the main beam and the guide beam to achieve the angle change. Instead, the continuous change of the angle can be directly achieved through the control of the hydraulic rod, which is non-destructive, greatly improves the construction efficiency, and saves the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the mobile mold frame of the present invention.

[0025] Figure 2 It is a top view of the movable mold frame of the present invention.

[0026] Figure 3 It is a top view of the rotatable unit of the present invention.

[0027] Figure 4 It is a schematic structural diagram of the rotatable unit of the present invention after rotation.

[0028] Figure 5 It is a schematic structural diagram of the first I-beam and the second I-beam in the rotatable unit of the present invention.

[0029] Figure 6 It is a schematic structural diagram of the third I-beam and the fourth I-beam of the rotatable unit of the present invention.

[0030] Description of the markings in the figure:

[0031] 1- Main beam;

[0032] 2-Front auxiliary outrigger;

[0033] 3-rotatable unit, 31-first I-beam, 32-second I-beam, 33-third I-beam, 34-fourth I-beam, 35-hydraulic rod, 36-I-beam connection point, 37-hinged seat. DETAILED DESCRIPTION

[0034] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0035] In the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] Embodiment 1:

[0038] This embodiment provides a guide beam structure with a variable rotation angle, which is arranged between the main beam 1 and the front auxiliary support leg 2. Figure 1-2 As shown, the guide beam structure includes multiple sections of repeating units connected in sequence. The repeating units in this embodiment are all frame structures, and the repeating units all include a total of four I-beams as axial force-bearing components.

[0039] Among them, the repeating unit connected to the main beam is a rotatable unit 3. In the rotatable unit, the first I-beam 31 and the second I-beam 32 on one side of the guide beam structure in the length direction are both cut off from the middle, and the cut-offs on both sides are connected by a retractable hydraulic rod 35; the third I-beam 33 and the fourth I-beam 34 on the other side of the guide beam structure in the length direction are both cut off from the middle, and the cut-offs on both sides are hingedly connected.

[0040] Embodiment 2:

[0041] The present embodiment provides a guide beam structure with a variable rotation angle and a mobile formwork including the guide beam structure. The guide beam structure of the present embodiment is arranged between the main beam 1 and the front auxiliary leg 2 of the mobile formwork. The guide beam structure includes three sections of repeating units with a length of 11m connected in sequence. The repeating units of the present embodiment are all frame structures, and the repeating units all include a total of four I-beams as axial force-bearing components from top to bottom, and adjacent I-beams are connected by horizontal, vertical or inclined trusses. Among them, the repeating unit connected to the main beam is a rotatable unit 3, and the last section of the repeating unit away from the main beam 1 is connected to the variable cross-section section connected to the front auxiliary leg 2.

[0042] like Figure 3-6 As shown, in the rotatable unit of this embodiment, the first I-beam 31 and the second I-beam 32 on one side of the guide beam structure in the length direction are both cut off, and the cut-off points on both sides are connected by a telescopic hydraulic rod 35. I-beam connection points 36 are provided on both sides of the cut-off points of the first I-beam 31 and the second I-beam 32. The cylinder barrel of the hydraulic rod 35 is connected to the I-beam connection point 36 on one side, and the piston rod of the hydraulic rod 35 is hinged to the I-beam connection point 36 on the other side. An inclined truss beam is connected between the I-beam connection point 36 connected to the cylinder barrel and the I-beam on the same side of the horizontal plane to enhance the stability of the entire rotatable unit. The third I-beam 33 and the fourth I-beam 34 on the other side of the guide beam structure in the length direction are both cut off, and the cut-off points on both sides are hingedly connected. The cut-off points of the third I-beam 33 and the fourth I-beam 34 are both hingedly connected by hinge seats 37.

[0043] When the rotation angle of the guide beam structure needs to be controlled to change, the hydraulic rod 35 only needs to be remotely controlled. When the piston rod of the hydraulic rod 35 is pushed out, the entire rotatable unit can be rotated a certain angle in the vertical direction due to the hinged connection between the piston rod and the I-beam connection point and the hinged connection between the third I-beam 33 and the fourth I-beam 34. The continuous change of the rotation angle of the guide beam structure can be achieved by controlling the hydraulic rod 35 to meet the construction requirements of the mobile formwork for curved bridges.

[0044] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A guide beam structure with a variable rotation angle, arranged between a main beam (1) and a front auxiliary support leg (2), characterized in that: The guide beam structure comprises a plurality of repeating units connected in sequence; The repeating units are all frame structures, each including four I-beams as axial force-bearing members; The repeating unit connected to the main beam is a rotatable unit (3); in the rotatable unit, a first I-beam (31) and a second I-beam (32) on one side along the length direction of the guide beam structure are both cut off, and the cut-off parts on both sides are connected by a retractable hydraulic rod (35); The third I-beam (33) and the fourth I-beam (34) on the other side of the guide beam structure along the length direction are both cut off, and the cut off parts on both sides are hingedly connected.

2. A guide beam structure with variable rotation angle according to claim 1, characterized in that: I-beam connection points (36) are provided on both sides of the cutoff points of the first I-beam (31) and the second I-beam (32).

3. A guide beam structure with variable rotation angle according to claim 2, characterized in that: The cylinder of the hydraulic rod (35) is connected to an I-beam connection point (36) on one side, and the piston rod of the hydraulic rod (35) is hinged to an I-beam connection point (36) on the other side.

4. A guide beam structure with variable rotation angle according to claim 3, characterized in that: An inclined truss beam is connected between an I-beam connection point (36) connected to the cylinder barrel and the I-beam on the same horizontal side.

5. The guide beam structure with variable rotation angle according to claim 1, characterized in that: The truncated parts of the third I-beam (33) and the fourth I-beam (34) are both movably hinged via a hinge seat (37).

6. The guide beam structure with variable rotation angle according to claim 1, characterized in that: Adjacent I-beams are connected by horizontal, vertical or inclined trusses.

7. The guide beam structure with variable rotation angle according to claim 1, characterized in that: The last section of the repeating unit away from the main beam (1) is connected to the variable cross-section section connected to the front auxiliary supporting leg (2).

8. The guide beam structure with variable rotation angle according to claim 1, characterized in that: The number of the repeating units is 3-5.

9. The guide beam structure with variable rotation angle according to claim 8, characterized in that: The length of the repeating unit is 10-12 m.

10. A movable formwork comprising the guide beam structure with variable rotation angle according to any one of claims 1 to 9.

Images