Device facilitating mounting, dismounting and hoisting of outer formwork of precast beam

Abstract

The utility model discloses a device convenient for mounting, dismounting and hoisting a precast beam outer template, which comprises a bottom cross beam, two vertical supports are welded on the bottom cross beam, the middle parts of the two vertical supports are respectively provided with a supporting steel plate extending forwards, the top of the supporting steel plate is provided with a U-shaped groove, and the supporting steel plate is provided with a notch adjusting block. The supporting steel plate and the notch adjusting block are provided with a plurality of installation positioning holes at the same intervals, and the notch adjusting block and the supporting steel plate are connected through a threaded connecting piece. A horizontal rectangular lifting frame is welded to the tops of the two vertical supports. Two hoisting connecting blocks which are parallel to each other, are arranged in the front-back direction and are used for hanging hoisting rings are welded on the rectangular hoisting frame, and a row of hoisting balance holes are respectively formed in the two hoisting connecting blocks. According to the utility model, while the appearance quality of the precast beam during form removal and the safety and controllability of the surrounding operation environment during hoisting are ensured, the one-time mounting and dismounting success rate and the turnover efficiency of the outer form can be improved, and the construction progress is accelerated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of highway bridge engineering construction, especially relates to a device convenient for precast beam outer formwork installation, dismounting, hoisting. BACKGROUND

[0002] With the development of our country's economy, in recent years, highway bridge engineering construction is more and more, in order to speed up the construction progress, reduce cast-in-place beam body high formwork construction risk, most upper structure slab adopts prefabricated form. In some high-tech project construction, affected by surrounding environment and beam load and many other factors, the same engineering will involve many different section sizes of precast beam, so, it will inevitably manufacture various specifications of beam formwork for precast beam production use.

[0003] After the beam body reinforcement is bound on the precast pedestal, the outer mold needs to be hoisted to the both sides of the pedestal for installation and reinforcement, and when the concrete pouring is completed and the concrete strength reaches 2.5MPa or more, the outer mold is removed and hoisted. At present, in the above-mentioned outer formwork installation, dismounting and hoisting process, more conventional simple lifting devices are used to directly pull the outer formwork by force, so that the outer formwork is easily deformed during pulling. At the same time, due to the poor stability of such conventional simple lifting devices, the outer formwork is easily damaged during installation, dismounting and hoisting, and the beam body concrete is easily damaged, and the surrounding objects are easily collided.

[0004] Therefore, an outer formwork installation, dismounting and hoisting device for precast beam is needed, which can improve the success rate of outer formwork installation and dismounting and turnover efficiency while ensuring the safety and controllability of the appearance quality of precast beam during dismounting and the safety of surrounding operation environment during hoisting, thereby speeding up the construction progress. UTILITY MODEL CONTENTS

[0005] In view of the above prior art, the utility model provides an outer formwork installation, dismounting and hoisting device for precast beam, which can improve the success rate of outer formwork installation and dismounting and turnover efficiency while ensuring the safety and controllability of the appearance quality of precast beam during dismounting and the safety of surrounding operation environment during hoisting, thereby speeding up the construction progress.

[0006] In order to solve the above technical problems, the utility model provides a device convenient for prefabricated beam outer formwork installation, disassembly, hoisting, including steel frame, the steel frame includes bottom crossbeam, the bottom crossbeam is welded with two vertical supports, the middle part of two vertical supports is equipped with the support steel plate that stretches out to the front respectively, the top of support steel plate is equipped with U type groove, be equipped with the notch adjusting block on support steel plate, be equipped with a plurality of spacing consistent installation positioning hole on support steel plate and notch adjusting block, the threaded connection spare connection between notch adjusting block and support steel plate, the top of two vertical supports is welded with a horizontal rectangular lifting frame, the top of rectangular lifting frame is welded with two parallel two lifting connecting blocks for hanging lifting ring along the front and back direction, is equipped with a row of lifting balance hole on two lifting connecting blocks respectively.

[0007] Further, the utility model discloses a device convenient for prefabricated beam outer formwork installation, disassembly, hoisting, wherein:

[0008] The front side of the bottom crossbeam is provided with an elastic pad.

[0009] The installation positioning hole on the support steel plate is a threaded hole, the installation positioning hole on the notch adjusting block is a light hole, and the threaded connection spare is a stud nut connecting spare. Alternatively, the installation positioning holes on the support steel plate and the notch adjusting block are both bolt through holes, and the threaded connection spare is a bolt nut connecting spare.

[0010] A triangular reinforcing steel plate is welded at the connection of the two vertical supports and the rectangular lifting frame.

[0011] A diagonal support is welded between the outer side of each vertical support and the bottom crossbeam.

[0012] The rectangular lifting frame and the support steel plate are arranged on the same side of the two vertical supports. At the same time, the heights of the two support steel plates are consistent, and the lifting connecting block and the support steel plate are arranged in parallel with each other.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] In the device, the support steel plates fixed on the front ends of the two vertical supports and having a certain spacing are provided with U-shaped grooves, so that the back latticed channel steel of different specifications and sizes can be clamped at the U-shaped groove notch of the top of the support steel plate, and the position of the installation positioning hole of the appropriate notch adjusting block can be selected to adjust the size of the U-shaped groove notch, so that the notch width of the U-shaped groove matches the specification of the hoisted back latticed channel steel, a single set of installation, disassembly and hoisting device can serve multiple specifications and sizes of outer formwork, construction cost is saved, and construction progress is accelerated.

[0015] The utility model discloses a device, through the multiple hoisting balance holes of the side -by -side setting on the rectangular hoisting frame at the top hoisting position, after trial hoisting, select the hoisting balance hole of different position as the fixed point of hoisting, thereby can to hoist the different specification size outer formwork and carry out leveling, avoid the formwork that is hoisted and carried in the formal installation and dismantle hoisting process swing, guarantee its in the hoisting process is in the safe and stable state.

[0016] The utility model discloses a device, through setting the elastic pad on the front side of bottom crossbeam, for example pasting rubber pad, can effectively avoid the hard contact of bottom crossbeam and outer formwork back channel steel, guarantee the flexible fit between both. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic diagram of the device of the utility model's convenient prefabricated beam outer formwork installation and dismantle hoisting.

[0018] Figure 2-1 It is the back surface schematic diagram of prefabricated beam outer formboard.

[0019] Figure 2-2 It is Figure 2-1 The side surface schematic diagram of prefabricated beam outer formboard shown in.

[0020] In the drawing,

[0021] 1-bottom crossbeam 2-vertical support 3-hoisting frame

[0022] 4-inclined support 5-triangle reinforcing steel plate 6-hoisting connecting block

[0023] 61-hoisting balance hole 7-support steel plate 71-U groove

[0024] 8-slot adjusting block 81-bolt connecting piece 9-elastic pad

[0025] 10-the panel of prefabricated beam outer formboard 20-the horizontal back of double spliced channel steel structure 21-the horizontal back of single channel steel structure

[0026] 30-vertical back DETAILED DESCRIPTION

[0027] The utility model will be further explained in connection with the drawings and specific embodiment, but the following embodiment is by no means any limit to the utility model.

[0028] For example, Figure 1The utility model provides a device convenient for prefabricated beam outer formwork to assemble, disassemble and hoist, including steel frame, the steel frame includes bottom crossbeam 1, two vertical supports 2 are welded on bottom crossbeam 1, and one inclined support 4 is welded between the outside of each vertical support 2 and bottom crossbeam 1. The middle part of two vertical supports 2 is respectively provided with a bracing steel plate 7 that protrudes forward, the height of two bracing steel plates 7 is consistent, the top of bracing steel plate 7 is equipped with U groove 71, bracing steel plate 7 is equipped with notch adjusting block 8, bracing steel plate 7 and notch adjusting block 8 are equipped with multiple mounting positioning holes of consistent spacing, notch adjusting block 8 and bracing steel plate 7 are connected with threaded connection 81, the mounting positioning hole of bracing steel plate 7 and notch adjusting block 8 is all bolt via hole, and threaded connection 81 is bolt and nut connecting piece. As Figure 1 In the embodiment, the mounting positioning hole 72 on bracing steel plate 7 is threaded hole, the mounting positioning hole 82 on notch adjusting block 8 is light hole, and threaded connection 81 is stud and nut connecting piece.

[0029] The top of two vertical supports 2 is welded with a horizontal rectangular lifting frame 3, and the connecting place of two vertical supports 2 and rectangular lifting frame 3 is welded with triangular reinforcing steel plate 5, rectangular lifting frame 3 and bracing steel plate 7 are arranged on the same side of two vertical supports 2, two lifting connecting blocks 6 that are parallel to each other and are arranged along the front and back direction are welded on the upper surface of rectangular lifting frame 3, lifting connecting block 6 and bracing steel plate 7 are arranged in parallel with each other, since rectangular lifting frame 3 and bracing steel plate 7 are located on the same side of steel frame, in order to guarantee smooth hoisting, a row of lifting balance holes 61 is arranged on two lifting connecting blocks 6 respectively.

[0030] Embodiment

[0031] According to the square steel and steel plate as material Figure 1The device is prepared by the structure shown. The rectangular hoisting frame 3 in the form of a closed horizontal square steel is welded by square steels, two vertical square steels are welded at the bottom of the horizontal square steel of the hoisting frame 3 to form vertical supports 2, the bottom of the two vertical square steels is welded with a horizontally connected square steel to form a bottom crossbeam 1, two groups of square section steel plates (hoisting connecting blocks 6) for suspending lifting rings are symmetrically welded at the top of the horizontal square steel, and two supporting steel plates 7 are welded at the front side of the middle part of the vertical square steel. A plurality of parallel round holes, i.e. hoisting balance holes 61, are arranged on the plate body of the hoisting connecting block 6, and a wire rope lifting ring is fastened at a pair of hoisting balance holes 61 symmetrically on both sides. In order to effectively reinforce and improve the stability of the steel frame connection, a triangular reinforcing steel plate 5 is further welded at the welding position of the horizontal square steel of the hoisting frame 3 and the vertical square steel of the vertical support 2. A U-shaped groove 71 is formed at the top of each supporting steel plate 7, a plurality of mounting holes 72 are formed on the plate body of the supporting steel plate 7 at the side of the U-shaped groove 71, a notch adjusting block 8 is arranged for each supporting steel plate 7, the notch adjusting block 8 is provided with a row of circular fine adjustment holes (i.e. mounting holes 82), the notch adjusting block 8 and the supporting steel plate 7 are connected by a high-strength bolt connector, the front and rear positions of the notch adjusting block 8 are adjusted by selecting different positions of the fine adjustment holes, so that the opening width of the U-shaped groove is matched with the height of the back lath channel steel of the hoisted precast beam outer formwork, thereby ensuring that the outer formwork is effectively clamped by the device during the installation, disassembly and hoisting process. The inclined support 4 is formed by connecting and reinforcing the inclined square steel between the square steel outside the vertical support 2 and the bottom crossbeam 1, before the inclined square steel is welded, the bevels of the two ends of the square tube are cut and polished to ensure effective connection with the square steel of the vertical support 2 and the square steel of the bottom crossbeam 1. Finally, rubber pads are arranged on the front side of the bottom crossbeam 1.

[0032] The basic structure of the hoisted precast beam outer formwork is shown in Figure 2-1 and Figure 2-2 The precast beam outer formwork includes a panel 10 and a back lath, the back lath includes a horizontal back lath and a vertical back lath 30, the horizontal back lath in the embodiment includes a horizontal back lath 20 of a double-spliced channel steel structure at the upper part and a horizontal back lath 21 of a single channel steel structure at the lower part.

[0033] Before the device is formally hoisted, the two supporting steel plates 7 are inserted into the lower part of the horizontal back lath 20 of the double-spliced channel steel structure through the gap of the back lath of the precast beam outer formwork, and then the U-shaped groove 71 is used to stably support them, during the trial hoisting, the hoisting point position connected with the lifting ring is constantly changed by using a pair of hoisting balance holes 61 in parallel, after the trial hoisting is balanced and stable, the formal installation, disassembly and hoisting are carried out. During the hoisting process, the lower part of the vertical back lath 30 on the back plate of the precast beam outer formwork will be pressed against the bottom crossbeam 1 of the device due to the influence of gravity, and since the rubber pads are pasted on the front side of the bottom crossbeam 1, the damage of the vertical back lath 30 of the precast beam outer formwork and the bottom crossbeam 1 of the device will not occur during the hoisting process.

[0034] Although the utility model has been described above in conjunction with the drawings, the utility model is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative rather than limiting, and many improvements and changes can be made by those of ordinary skill in the art without departing from the purpose of the utility model under the inspiration of the utility model, and these all belong to the protection of the utility model.

Claims

1. A device for facilitating the assembly, disassembly, hoisting and transporting of prefabricated beam outer formwork, comprising a steel frame, the steel frame comprising a bottom crossbeam (1), two vertical supports (2) welded to the bottom crossbeam (1), characterized in that, the middle portions of the two vertical supports (2) are respectively provided with a forwardly protruding bracing steel plate (7), the top of the bracing steel plate (7) is provided with a U-shaped groove (71), the bracing steel plate (7) is provided with a notch adjusting block (8), a plurality of mounting positioning holes with consistent spacing are provided on the bracing steel plate (7) and the notch adjusting block (8), and the bracing steel plate (7) and the notch adjusting block (8) are connected by a threaded connecting piece (81). A horizontal rectangular lifting frame (3) is welded to the top of the two vertical supports (2); the upper surface of the rectangular lifting frame (3) is welded with two lifting connecting blocks (6) parallel to each other and arranged in the front-rear direction for suspending lifting rings, and one row of lifting balance holes (61) is respectively provided on the two lifting connecting blocks (6).

2. The device for facilitating the handling of the formwork of precast beams according to claim 1, characterized in that, An elastic pad (9) is provided on the front side of the bottom crossbeam (1).

3. The device for facilitating the handling of the formwork of precast beams according to claim 1, characterized in that, The mounting positioning holes on the bracing steel plate (7) are threaded holes, the mounting positioning holes on the notch adjusting block (8) are light holes, and the threaded connecting piece (81) is a stud and nut connecting piece.

4. The device for facilitating the handling of the formwork of precast beams according to claim 1, characterized in that, The mounting positioning holes on the bracing steel plate (7) and the notch adjusting block (8) are bolt through holes, and the threaded connecting piece (81) is a bolt and nut connecting piece.

5. The device for facilitating the handling of the formwork of precast beams according to claim 1, characterized in that, A triangular reinforcing steel plate (5) is welded at the connection between the two vertical supports (2) and the rectangular lifting frame (3).

6. The device for facilitating the handling of the formwork of precast beams according to claim 1, characterized in that, A diagonal support (4) is respectively welded between the outer side of each vertical support (2) and the bottom crossbeam (1).

7. The device for facilitating the handling of the formwork of precast beams according to claim 1, characterized in that, The rectangular lifting frame (3) and the bracing steel plate (7) are arranged on the same side of the two vertical supports (2).

8. The device for facilitating the handling of precast beam formworks according to claim 7, characterized in that, The heights of the two bracing steel plates (7) are consistent, and the lifting connecting block (6) and the bracing steel plate (7) are arranged in parallel to each other.

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