Movable formwork support

Abstract

The utility model relates to the field of formwork supports of bridge engineering, in particular to a movable formwork support which comprises two rails, two walking components, a plurality of cross beams and a scaffold. The track is arranged on the supporting face and is parallel to the transverse bridge direction. The two walking components are placed on the two rails respectively and can move along the rails. The cross beam is connected with the walking part and is formed by splicing a plurality of steel bailey trusses. The scaffolds are arranged on the cross beams, and the tops of the scaffolds are used for supporting formworks. The walking component can drive the formwork support to move along the track, so that the scaffold is prevented from being dismantled and erected again, manpower consumption is reduced, the construction period is shortened, and the project cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of formwork support of bridge engineering, in particular to a movable formwork support. BACKGROUND

[0002] In the high-speed rail traffic system, a special bridge structure is designed for the complex terrain elevation difference in the train entering and leaving station area of the high-speed rail station. The purpose of the special bridge is to overcome the terrain elevation difference while providing stable and solid support for the huge upper load of the high-speed train when entering and leaving the station. In view of the process of the train entering and leaving the station, the train needs to smoothly transition from the main line to multiple platform rails, so the design of the bridge in this area is no longer the layout of the traditional linear bridge, but the layout of the surface to adapt to the complex turnout system and platform layout. Specifically, each span of the special bridge adopts a reinforced concrete portal space rigid frame as the main structure form, and the width of each span along the bridge transverse direction is greater than the span of the span. Among them, the word "rigid frame" specifically refers to the close connection between the pier body (column pier) and the bridge deck system through consolidation, forming a spatial structure with high integrity and high stiffness.

[0003] Each span of the above-mentioned bridge is composed of several column piers and main beams. The column piers are constructed first, and when the main beam of the span is started to be constructed, if the full scaffold support formwork is used, a large amount of material needs to be consumed. In order to save materials, the main beam is generally divided into multiple pieces for segmented construction. When the construction of the last segment of the main beam is completed, the scaffold supporting it is removed, and the components of these scaffolds are transported to the next construction segment to be re-erected, and then the construction of the next segment of the main beam is started.

[0004] However, when the main beam of each span of the bridge is constructed, although the segmented construction saves materials, it still needs to perform tedious scaffold removal operations, and the components of these scaffolds need to be transported to the next construction segment one by one for reassembly. This process not only consumes a large amount of human resources, but also has a long construction period and high project cost. INVENTION CONTENTS

[0005] The utility model aims at overcoming the deficiencies in the prior art that the formwork support of each construction segment of the main beam of each span of the bridge needs to be removed after pouring the concrete, moved to the next construction segment, and re-erected, which consumes a lot of manpower, has a long construction period, and has high project cost, and provides a movable formwork support.

[0006] The utility model provides a movable formwork support, which comprises:

[0007] Two tracks, two tracks are arranged on the supporting surface, and the tracks are parallel to the transverse direction of the bridge;

[0008] Two walking parts, two walking parts are placed on two tracks respectively, and the walking parts can move along the tracks.

[0009] Several beams, the beams are connected with the walking parts, and the beams are composed of several steel bailey frames.

[0010] Scaffolding, the scaffolding is arranged on the beams, and the top of the scaffolding is used for supporting the formwork.

[0011] The utility model provides a movable formwork support, a plurality of beams are connected with two walking parts, form the support platform of scaffolding, the scaffolding transmits upper support load to the beam, the beam adopts a plurality of steel bailey frame splicing, the steel bailey frame adopts modular design, and the steel bailey frame has the advantages of high bearing capacity, low cost, convenient installation and easy assembly.

[0012] The support surface can utilize the existing foundation platform, or the ground at the position where the track needs to be arranged can be hardened and reinforced.

[0013] The track can be a groove on the support surface, such as a reinforced concrete groove, and the track can also be a protruding strip arranged on the support surface, such as a toothed rail, a steel rail or an iron rail.

[0014] The walking part is provided with an upper support structure for connecting with the beam and supporting the beam, and the support structure can be a beam structure or a truss structure.

[0015] The scaffolding can be various, such as a component type scaffolding or a disc type scaffolding.

[0016] Preferably, the walking part comprises a longitudinal beam, a driving wheel set and a driven wheel set are arranged below the longitudinal beam, the driving wheel set and the driven wheel set are in contact with the track and can roll along the track, and the beam is connected with the longitudinal beam.

[0017] The longitudinal beam needs to have high bearing capacity, and is generally made of profile steel, such as I-beam, H-beam, steel box girder, etc.

[0018] The connection between the cross beam and the longitudinal beam can be welding or bolting, the cross beam can be connected with the top surface or side surface of the longitudinal beam, and the cross beam and the longitudinal beam can be connected at an inclined angle or perpendicularly.

[0019] The driven wheel set plays a role of supporting the longitudinal beam and passive walking, and the driving wheel set plays a role of supporting the longitudinal beam and active walking. The driven wheel set and the driving wheel set can be directly connected with the longitudinal beam through a pin shaft, or indirectly connected through other components.

[0020] Preferably, the track is a steel rail, which can be directly laid on the surface of the supporting surface, can be flexibly installed or disassembled, can be repeatedly used or recycled, and the use cost is saved. The driving wheel set and the driven wheel set each include a steel wheel, and the two sides of the steel wheel are provided with a flange. The flange can clamp the steel rail in the middle, so as to avoid the derailment of the steel wheel during rolling. The steel rail and the steel wheel have large rigidity and small deformation, so as to improve the stability of the formwork support during movement.

[0021] Preferably, the driven wheel set further includes a first wheel frame and a first swing frame, the first swing frame is connected with the bottom of the longitudinal beam, the middle part of the first wheel frame is rotationally connected with the first swing frame, and the two ends of the first wheel frame are respectively connected with the steel wheels. This scheme can ensure that the steel wheels at the two ends of the first wheel frame are in contact with the steel rail.

[0022] Preferably, the driving wheel set further includes a second wheel frame and a second swing frame, the second swing frame is connected with the bottom of the longitudinal beam, the middle part of the second wheel frame is rotationally connected with the second swing frame, and the two ends of the second wheel frame are respectively connected with the steel wheels. This scheme can ensure that the steel wheels at the two ends of the second wheel frame are in contact with the steel rail. A driving component is arranged on the second wheel frame, and the driving component can drive the steel wheels of the driving wheel set to rotate.

[0023] Preferably, the cross beam is connected above the longitudinal beam through a U-shaped bolt. In this scheme, the cross beam and the longitudinal beam can be stably connected and easily disassembled, so as to facilitate subsequent hoisting and reuse.

[0024] Preferably, the longitudinal beam is made of HN type steel double-spliced and welded. The HN type steel refers to an H type steel with a height-width ratio greater than or equal to 2. The longitudinal beam made of HN type steel has high vertical bearing capacity and is convenient to process and manufacture.

[0025] Preferably, a base plate is arranged between the cross beam and the scaffold, the base plate is an I-beam or a channel steel.

[0026] Preferably, the bottom of the longitudinal beam is provided with a jacking component and a support block.

[0027] Preferably, two supporting pads are arranged below the support block, and the two supporting pads are arranged on the support surface on both sides of the track.

[0028] Compared with the prior art, the utility model has the advantages of:

[0029] The movable formwork support can realize the re-erection of the scaffold without dismounting, reduces the labor cost, shortens the construction period and reduces the project cost. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a front view of a movable formwork support.

[0031] Figure 2 is Figure 1 is a sectional view of the A-A cutting line.

[0032] Figure 3 is an enlarged view of the front of the driven wheel set.

[0033] Figure 4 is an enlarged view of the side of the driving wheel set.

[0034] Figure 5 is an enlarged view of the side of the driven wheel set.

[0035] Figure 6 is an enlarged view of the side of the support block and the supporting pad.

[0036] Figure 7 is a construction flow chart of a movable formwork support.

[0037] Reference signs in the drawings:

[0038] 1 - support surface,

[0039] 2 - track,

[0040] 3 - driven wheel set,

[0041] 31 - first wheel carrier, 32 - first swing carrier,

[0042] 4 - longitudinal beam,

[0043] 5 - cross beam,

[0044] 6 - driving wheel set,

[0045] 61 - second wheel carrier, 62 - motor, 63 - second swing carrier,

[0046] 7 - jacking part,

[0047] 8 - support block,

[0048] 9 - support pad,

[0049] 10 - pad plate,

[0050] 11 - scaffold,

[0051] 12 - main beam,

[0052] 13 - column pier. DETAILED DESCRIPTION

[0053] The utility model will be described in further detail below in combination with specific embodiments. However, this should not be understood as the scope of the above-mentioned subject matter of the utility model being limited to the following embodiments only, and any technology realized based on the content of the utility model falls within the scope of the utility model.

[0054] In the description of the embodiments of the utility model, the orientation or position relationship terms such as "up", "down", "left", "right", "center", "inner", "outer" and the like appear without special indication, which are based on the orientation or position relationship expressed in the drawings or the orientation or position relationship used when the product / equipment / device of the utility model is normally used. These orientation or position relationship terms are only used to facilitate the description of the utility model scheme or simplify the description in the embodiments, so as to facilitate the quick understanding of the scheme by the technicians, and are not intended to indicate or imply that a specific device / component / element must have a specific orientation or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the utility model.

[0055] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or overhanging or parallel, but can be slightly inclined or have a deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Alternatively, it can be simplified to understand that the corresponding device / component / element is arranged in the direction of "horizontal", "vertical", "overhanging", "parallel" and the like, and can have an error / deviation of ±10% relative to the corresponding direction, more preferably an error / deviation of ±8%, more preferably an error / deviation of ±6%, more preferably an error / deviation of ±5%, more preferably an error / deviation of ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the utility model scheme.

[0056] In addition, the terms "first", "second", "third" and the like in the description of the utility model embodiments are only used to distinguish the same or similar components, and should not be understood as emphasizing or implying the relative importance of the specific components.

[0057] In addition, in the description of the embodiments of the utility model, "several", "a plurality of", "several" represent at least 2. It can be 2, 3, 4, 5, 6, 7, 8, 9, etc. Any case, it can even be more than 9 cases.

[0058] In addition, in the description of the technical scheme of the utility model, unless otherwise specified / limited / limited, the terms "set", "install", "connect", "connect", "set", "lay", "arrange" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, which can be welding, riveting, bolting, screwing and other commonly used connection means in the art. The connection can be mechanical connection, electrical connection or communication connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements.

[0059] Embodiment 1

[0060] As shown in Figure 1 , Figure 2 A movable formwork support includes two tracks 2, two walking parts, a plurality of cross beams 5 and a scaffold 11.

[0061] The two tracks 2 are arranged on the support surface 1, and the tracks 2 are parallel to the transverse bridge direction. The support surface 1 is composed of the foundation beam of the column pier 13 and the hardened structure between the adjacent foundation beams.

[0062] The two walking parts are respectively placed on the two tracks 2, and the walking parts can move along the tracks 2.

[0063] The crossbeam 5 is connected to the traveling component and is composed of several steel Bailey frames spliced ​​together. Specifically, the steel Bailey frames are connected by bolts to form individual trusses, and two individual trusses are then connected by crossbars and diagonal braces to form a frame beam. The frame beam is more stable, less prone to tipping over, lightweight, easy to transport and install, and has good applicability.

[0064] Scaffolding 11 is set on the crossbeam 5, and the top of scaffolding 11 is used to support the formwork.

[0065] In an optional embodiment, the traveling component may include a longitudinal beam 4, with a driving wheel set 6 and a driven wheel set 3 located below the longitudinal beam 4. Both the driving wheel set 6 and the driven wheel set 3 are in contact with the track 2 and can roll along the track 2. The longitudinal beam 4 is parallel to the extending direction of the track 2. The driving wheel set 6 is located at one end of the longitudinal beam 4, specifically at the end away from the direction of travel, so that the driving wheel set 6 can push the entire template support forward. Each longitudinal beam 4 can be equipped with multiple sets of driven wheel sets 3. The specific number of driven wheel sets 3 installed on each longitudinal beam 4 can be 2, 3, 4, 5, or 6 sets. The driven wheel sets 3 can also be installed at intervals of 10 meters according to the length of the longitudinal beam 4. Crossbeams 5 are connected to the longitudinal beams 4, specifically, each crossbeam 5 is connected to the longitudinal beams 4 on two of the traveling components.

[0066] In an optional embodiment, the track 2 can be a steel rail, specifically a No. 50 ordinary steel rail, which is laid directly on the support surface 1 and fixed with bolts. Both the driving wheel assembly 6 and the driven wheel assembly 3 can include steel wheels, with flanges on both sides of the steel wheels.

[0067] In optional implementations, such as Figure 3 , Figure 5 As shown, the driven wheel assembly 3 may further include a first wheel frame 31 and a first swing frame 32. The first swing frame 32 is connected to the bottom of the longitudinal beam 4, specifically by welding or bolting. The middle part of the first wheel frame 31 is rotatably connected to the first swing frame 32, and the rotatable connection can be achieved by a pin. The steel wheels are respectively connected to both ends of the first wheel frame 31, and the steel wheels can be connected to the first wheel frame 31 by pins.

[0068] In optional implementations, such as Figure 4As shown, the driving wheel set 6 can further include a second wheel frame 61 and a second swing frame 63. The second swing frame 63 is connected to the bottom of the longitudinal beam 4, and can be welded or bolted. The middle of the second wheel frame 61 is rotationally connected to the second swing frame 63, and the rotational connection can be achieved by a pin. The two ends of the second wheel frame 61 are respectively connected to the steel wheels, which can be connected to the second wheel frame 61 by a pin shaft. The second wheel frame 61 is provided with a driving component, which can include a motor 62 or an engine. The motor 62 or the engine drives the steel wheels of the driving wheel set 6 to rotate through a chain.

[0069] In an optional embodiment, the driving wheel set 6 can further include a control electric box and a gear reducer. The control electric box is used to control the opening or closing of the motor 62, and can control the forward or backward movement of the driving wheel set 6. The gear reducer plays a role of braking the driving wheel set 6.

[0070] In an optional embodiment, the connection between the second swing frame 63 and the first swing frame 32 and the longitudinal beam 4 can be rotated by 90°, so that the driving wheel set 6 and the driven wheel set 3 can move in a direction perpendicular to the axis of the longitudinal beam 4, i.e., can move along the axis of the vertical track 2. In this embodiment, after the formwork support completes the construction of one bridge span, moves to the outside of the bridge, rotates the driving wheel set 6 and the driven wheel set 3 by 90° through the second swing frame 63 and the first swing frame 32 respectively, synchronously lays the longitudinal bridge track 2 matching the positions of the driving wheel set 6 and the driven wheel set 3, and moves the formwork support to the next bridge span, and then continues the construction of the next bridge span.

[0071] In an optional embodiment, the cross beam 5 can be connected to the upper side of the longitudinal beam 4 by a U-shaped bolt, and the cross beam 5 can be perpendicular to the longitudinal beam 4. Along the axial direction of the longitudinal beam 4, one cross beam 5 is arranged every 90 cm.

[0072] In an optional embodiment, the longitudinal beam 4 can be composed of double-spliced HN steel. The specific cross-sectional dimensions of the HN steel can be HN600×200×12×20, HN700×300×13×24, HN800×300×14×22, and HN800×300×14×26. Among them, HN700×300×13×24 represents an HN steel with a height of 700 mm, a width of 300 mm, a web thickness of 13 mm, and a flange thickness of 24 mm. The multiple segments of HN steel can be connected by welding or bolting to form a longer longitudinal beam 4. The HN steel can be welded with several rib plates along its length direction to improve its carrying capacity.

[0073] In an optional embodiment, a pad 10 can be arranged between the cross beam 5 and the scaffold 11, and the pad 10 can be an I-beam or a channel steel. Specifically, the pad 10 can be a 20# I-beam, the upper flange of the 20# I-beam is in contact with the bottom end of the upright pole of the scaffold 11, the lower flange of the 20# I-beam is in contact with the top surface of the cross beam 5, the I-beam is perpendicular to the cross beam 5, and one I-beam is arranged every 1.2 m.

[0074] In an optional embodiment, the bottom of the longitudinal beam 4 can be provided with a jacking component 7 and a support block 8. The support block 8 is arranged every 4 m-8 m along the longitudinal beam 4, and the specific interval can be 4 m, 5 m, 6 m, 7 m or 8 m.

[0075] In an optional embodiment, the jacking component 7 can be a lifting oil cylinder. The lifting oil cylinder is arranged every 6 m-10 m along the longitudinal beam 4, and the specific interval can be 6 m, 7 m, 8 m, 9 m or 10 m. The lifting oil cylinder further comprises a pump station, and the lifting oil cylinder is connected to the pump station through a high-pressure oil pipe.

[0076] In an optional embodiment, as shown in Figure 6 The two support pads 9 are arranged on the support surface 1 on both sides of the rail 2. The support pad 9 can be made of a 36# I-beam, and the height of the support pad 9 is higher than the rail. For example, the height of the support block 8 can be 30 cm, and the support block 8 can be a steel block, and the maximum load bearing capacity of the support block 8 can be 140 tons or more.

[0077] Embodiment 2

[0078] The specific construction method and use method of the movable formwork support described in Embodiment 1 will be described below, and the specific process is shown in Figure 7 The specific process is shown in

[0079] S1: Laying the rail 2 on the support surface 1, marking the positions of the support pad 9, the driving wheel set 6, the driven wheel set 3 and the lifting oil cylinder on the support surface 1, placing the support pad 9 to the corresponding position, installing the support block 8 on the support pad 9, adjusting the elevations of all the support blocks 8 to the same height, then hoisting the driving wheel set 6, the driven wheel set 3 and the lifting oil cylinder to the corresponding positions, respectively contacting the top surface of the rail 2 with the steel wheels of the driving wheel set 6 and the driven wheel set 3, installing the motor 62 on the second wheel frame 61, and connecting the motor 62 with one of the steel wheels of the driving wheel set 6 using a chain.

[0080] S2: hoist the longitudinal beam 4 to fall on the support block 8, bolt the second swing frame 63 of the driving wheel set 6 with the bottom of the longitudinal beam 4, and bolt the first swing frame 32 of the driven wheel set 3 with the bottom of the longitudinal beam 4, at this time the longitudinal beam 4 is supported by the support block 8 entirely, the steel wheels of the driving wheel set 6 and the driven wheel set 3 are all above the track 2, but do not contact the track 2, so as to avoid unnecessary movement of the formwork support during the erection of the support or the concrete pouring process; install the lifting oil cylinder below the longitudinal beam 4; connect the motor 62 and the pump station to the control electric box through the cable, and connect the lifting oil cylinder with the pump station through the high-pressure oil pipe.

[0081] S3: splice several steel Bailey frames according to the interval of the two longitudinal beams 4 into several cross beams 5, hoist the several cross beams 5 to the longitudinal beams 4, and connect the two ends of all the cross beams 5 with the longitudinal beams 4 through U-shaped bolts, and the interval between the cross beams 5 is 90cm; hoist the several base plates 10 to the cross beams 5 and place them vertically, and the interval between the base plates 10 is 1.2m; continue to erect the scaffold 11 and the formwork on the base plate 10, and then carry out the concrete pouring construction of the main beam 12.

[0082] S4: when the concrete reaches the demolding strength, first lift the longitudinal beam 4 upward by using the lifting oil cylinder, so as to reduce the pressure borne by the support block 8, then remove the support block 8 together with the supporting cushion 9, lower the lifting oil cylinder again, and lower the whole formwork support, so that the steel wheels of the driving wheel set 6 and the driven wheel set 3 all fall on the track 2, finally collect the oil cylinder, and complete the demolding of the top formwork of the scaffold 11.

[0083] S5: start the motor 62 by using the control electric box, drive the steel wheels of the driving wheel set 6 to rotate, and then drive the whole formwork support to move along the track 2, move the whole formwork support to the next construction section, lift the formwork support to the designed elevation by using the lifting oil cylinder, and make the steel wheels of the driving wheel set 6 and the driven wheel set 3 all separate from the track 2, reinstall the support block 8 and the supporting cushion 9 to the corresponding positions, then lower the lifting oil cylinder again, so that the longitudinal beam 4 falls on the support block 8, and start the next construction cycle.

[0084] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A movable formwork support, characterized in that, The utility model relates to a kind of movable formwork, including Two tracks (2), two the track (2) is set on support surface (1), the track (2) is parallel with bridge direction; Two walking parts, two the walking part is placed on two the track (2) respectively, the walking part can move along the track (2); Several cross beams (5), the cross beam (5) is connected with the walking part, the cross beam (5) is spliced by several steel bailey racks; Scaffold (11), the scaffold (11) is set on the cross beam (5), the scaffold (11) top is used to support formwork; The walking part includes longitudinal beam (4), the active wheel group (6) and driven wheel group (3) are equipped below the longitudinal beam (4), the active wheel group (6) and driven wheel group (3) are in contact with the track (2) and can be rolled along the track (2), the cross beam (5) is connected with the longitudinal beam (4).

2. The movable formwork support of claim 1, wherein, The track (2) is steel rail, the active wheel group (6) and driven wheel group (3) all include steel wheel, both sides of the steel wheel are equipped with rim.

3. The movable formwork support of claim 2, wherein, The driven wheel group (3) further includes first wheel bracket (31) and first swing bracket (32), the first swing bracket (32) is connected with the bottom of longitudinal beam (4), the middle part of first wheel bracket (31) is rotatably connected with the first swing bracket (32), both ends of first wheel bracket (31) are connected with the steel wheel respectively.

4. The movable formwork support of claim 2, wherein, The active wheel group (6) further includes second wheel bracket (61) and second swing bracket (63), the second swing bracket (63) is connected with the bottom of longitudinal beam (4), the middle part of second wheel bracket (61) is rotatably connected with the second swing bracket (63), both ends of second wheel bracket (61) are connected with the steel wheel respectively, and driving component is arranged on the second wheel bracket (61).

5. The movable formwork support of claim 1, wherein, The cross beam (5) is connected above the longitudinal beam (4) by U-shaped bolt.

6. A moveable formwork support according to any one of claims 1 to 5, wherein, The longitudinal beam (4) is HN type steel double-spliced welding.

7. A moveable formwork shelf according to claim 6, wherein, The cross beam (5) and the scaffold (11) are equipped with fender plate (10), and the fender plate (10) is I-beam or channel steel.

8. The movable formwork support of claim 6, wherein, The bottom of the longitudinal beam (4) is equipped with jacking component (7) and support block (8).

9. The movable formwork support of claim 8, wherein, The bottom of the longitudinal beam (4) is equipped with jacking component (7) and support block (8).

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