Early-dismantling formwork supporting system

Abstract

The utility model relates to an early-dismantling formwork supporting system which effectively solves the problems that an existing formwork early-dismantling structure is poor in safety and low in efficiency. According to the technical scheme, the early-dismantling formwork comprises a plurality of supporting rods, cross beams, longitudinal beams, early-dismantling formworks and later-dismantling formworks, the upper section of each supporting rod is provided with a set of early-dismantling supporting units, each early-dismantling supporting unit comprises an inner sleeve coaxially installed on the corresponding supporting rod, and an adjusting nut located below the corresponding inner sleeve is rotationally installed on the corresponding supporting rod; the lower end of the inner sleeve is supported on the adjusting nut, the inner sleeve is coaxially sleeved with an outer sleeve, an exhaust gap is reserved between the upper end of the outer sleeve and the outer wall of the supporting rod, a transverse pin hole is formed in the outer wall of the inner sleeve, a pin is inserted into the pin hole, and the lower end of the outer sleeve is supported on the pin so that the outer sleeve can not move downwards. Two supporting lugs which are symmetrical left and right are fixed on the outer wall of the outer sleeve; during early dismounting, the template cannot be impacted by violent reduction, and the device is high in safety, simple to operate, high in speed and high in efficiency.

Description

Technical Field

[0001] The utility model relates to the field of casting formwork, in particular to an early-dismantling formwork support system. Background Art

[0002] After the floor is poured, when the concrete solidification strength reaches 50% or 75% of the design strength, the formwork and part of the support can be removed in advance, leaving part of the support until the concrete fully reaches the design strength and then removed. The formwork removed in advance can enter the turnover in advance, improve the turnover rate, and reduce the number and cost of formwork input; the early removal head is the core structure of the support formwork, and the early removal of the formwork is achieved by the lifting of the early removal head support structure. The utility model patent with application number: CN201720303464.9 uses a slide groove to realize the lifting of the support mechanism, so that the formwork is separated from the poured concrete for removal, but its descending speed is uncontrollable, and the formwork will fall sharply, which is prone to collision and collapse accidents; the utility model patent with application number: CN201521131659.7 and the utility model patent with application number: CN200820080649.9 both realize the lifting of the support mechanism through a threaded structure, thereby realizing the early removal of the formwork. Although the threaded structure is safe, the lifting speed is too slow and the demolding efficiency is low. Summary of the invention

[0003] The utility model provides an early-dismantling template support system, aiming to solve the problems of poor safety and low efficiency of the existing early-dismantling template structure.

[0004] The technical solution includes a plurality of support rods, a plurality of cross beams, a plurality of longitudinal beams, a plurality of early dismantling templates and a plurality of post-dismantling templates. A horizontal top plate is fixed to the upper end of each support rod. A group of early dismantling support units are installed on the upper section of each support rod. The early dismantling support unit includes an inner sleeve coaxially mounted on the support rod. The inner sleeve can slide axially on the support rod. An adjusting nut located below the inner sleeve is screwed on the support rod. The lower end of the inner sleeve is supported on the adjusting nut. A The outer sleeve, the inner wall of the outer sleeve and the outer wall of the inner sleeve are sealed, and the outer sleeve can slide axially relative to the inner sleeve, an exhaust gap is left between the upper end of the outer sleeve and the outer wall of the support rod, a transverse pin hole is opened on the outer wall of the inner sleeve, a pin is inserted in the pin hole, the lower end of the outer sleeve is supported on the pin so that the outer sleeve cannot move downward, two left-right symmetrical supporting ears are fixed on the outer wall of the outer sleeve, the crossbeam is placed on the supporting ears, the longitudinal beam is placed on the crossbeam perpendicular to the crossbeam, the early dismantled template is placed on the longitudinal beam, and the late dismantled template is placed on the top plate.

[0005] The inner end of the pin hole is inclined downward.

[0006] The support rod is composed of two sections, the upper and lower sections, which are connected by threads.

[0007] The outer end of the pin is provided with a ring hole.

[0008] A reinforcing rib is connected between the supporting ear and the outer wall of the outer sleeve.

[0009] The utility model has the advantages of strong safety, simple operation, high speed and high efficiency, and the template will not fall suddenly and collide when the utility model is dismantled early. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front cross-sectional view of the utility model in a supporting state.

[0011] Figure 2 for Figure 1 Enlarged view of position A in the middle.

[0012] Figure 3 It is a front cross-sectional view of the utility model in an early disassembled state.

[0013] Figure 4 for Figure 3 Enlarged view of position B in the middle. DETAILED DESCRIPTION

[0014] In conjunction with the accompanying drawings, the utility model includes a plurality of support rods 1, a plurality of cross beams 2, a plurality of longitudinal beams 3, a plurality of early dismantling templates 4 and a plurality of post-dismantling templates 5. A horizontal top plate 6 is fixed to the upper end of each support rod 1. A group of early dismantling support units are installed on the upper section of each support rod 1. The early dismantling support unit includes an inner sleeve 7 coaxially mounted on the support rod 1. The inner sleeve 7 can slide axially on the support rod 1, and an adjusting nut 8 located below the inner sleeve 7 is screwed on the support rod 1. The inner sleeve 7 is screwed on the support rod 1. The lower end of the sleeve 7 is supported on the adjusting nut 8, and the height of the inner sleeve 7 can be adjusted by adjusting the nut 8. An outer sleeve 9 is coaxially sleeved on the inner sleeve 7. The inner wall of the outer sleeve 9 is sealed with the outer wall of the inner sleeve 7, and the outer sleeve 9 can slide axially relative to the inner sleeve 7. An exhaust gap 10 is left between the upper end of the outer sleeve 9 and the outer wall of the support rod 1. A transverse pin hole 11 is opened on the outer wall of the inner sleeve 7, and a pin 12 is inserted in the pin hole 11. The lower end of the outer sleeve 9 is supported on the pin 12 so that the outer sleeve 9 The outer wall of the outer sleeve 9 is fixed with two symmetrical supporting ears 13, the crossbeam 2 is placed on the supporting ears 13, the longitudinal beam 3 is placed on the crossbeam 2 perpendicular to the crossbeam 2, the early removal template 4 is arranged on the longitudinal beam 3, and the rear removal template 5 is placed on the top plate 6; the early removal template 4 is tightly assembled with the rear removal template 5 and the upper surface is flush, so as to form a complete bottom mold, the early removal template 4 is supported by the crossbeam 2, the longitudinal beam 3 and the early removal support unit, and the rear removal template 5 is supported by the top plate 6 and the support rod 1. When the early removal condition is met, the pin 12 at the lower end of the outer sleeve 9 is pulled out, and the lower end of the outer sleeve 9 loses support, then the outer sleeve 9 descends along the inner sleeve 7, and the air in the outer sleeve 9 is discharged through the exhaust gap 10. Since the exhaust gap 10 is small and the exhaust speed is slow, it will limit the speed of the outer sleeve 9 descending, so that the outer sleeve 9 slowly descends, and the crossbeam 2, the longitudinal beam 3 and the early removal template 4 will also slowly descend synchronously with the outer sleeve 9. After descending to the lowest position, the crossbeam 2, the longitudinal beam 3 and the early removal template 4 can be removed.

[0015] The inner end of the pin hole 11 is tilted downward, so that the pin 12 is in a state where the outer end is high and the inner end is low, which can prevent the pin 12 from falling off during the supporting process.

[0016] The support rod 1 is composed of two sections, an upper section and an lower section, which are connected by threads, so that the total length of the support rod 1 can be adjusted.

[0017] The outer end of the pin is provided with a ring hole 14, through which the pin 12 can be easily pulled out.

[0018] A reinforcing rib 15 is connected between the supporting ear 13 and the outer wall of the outer sleeve 9 to prevent the supporting ear 13 from deforming or sagging.

[0019] When the early-dismantling support system is constructed, the support rod 1 is erected according to the designed density, and then the outer sleeve 9 is pulled upward so that its lower end is higher than the pin hole 11, the pin 12 is inserted into the pin hole 11, and then the outer sleeve 9 is pressed down so that its lower end is supported on the pin 12, and then the crossbeam 2 is set on the support ear 13 of each early-dismantling support unit. After the crossbeam 2 is set up, the longitudinal beams 3 are laid equidistantly above the crossbeam 2 in a direction perpendicular to the crossbeam 2, and the crossbeams 2 and the longitudinal beams 3 form a grid-like support, and then the early-dismantling formwork 4 is laid above the longitudinal beam 3, and the rear-dismantling formwork 5 is laid above the top plate 6. The early-dismantling formwork 4 is a conventional rectangular formwork, and the rear-dismantling formwork 5 is a narrow rectangular formwork used to fill the gap of the early-dismantling formwork 4 at the top plate 6; after the formwork is laid, the height of each early-dismantling support unit can be fine-tuned by adjusting the nut 8 so that the upper surface of all the formworks forms a flat casting surface; after the formwork adjustment is completed, concrete can be poured.

[0020] After the concrete reaches the early-removal strength, the early-removal formwork 4 can be removed. The specific operation is: pull out the pins 12 of each early-removal support unit in turn, and the outer sleeve 9 that has lost the bottom support slowly descends under the gravity of the early-removal formwork 4 of the crossbeam 2 and the longitudinal beam 3 and the air pressure in the sleeve. After descending to the lowest position, the early-removal formwork 4, the longitudinal beam 3 and the crossbeam 2 can be removed in turn, leaving each support rod 1 and the post-removal formwork 5 to support the pouring of concrete until the conditions for complete demolding are met, and then the support rod 1 and the post-removal formwork 5 are removed.

[0021] During early dismantling, the utility model pulls out the pin 12, and the early dismantling support unit can automatically and slowly descend to a greater height, the template will not suddenly fall and collide, the safety is strong, and a larger operating space can be provided for the dismantling of the early dismantling template 4 and the cross beam 2 and longitudinal beam 3, the operation is simple, the speed is fast, and the efficiency is high.

Claims

1. An early dismantling formwork support system, comprising a plurality of support rods (1), a plurality of cross beams (2), a plurality of longitudinal beams (3), a plurality of early dismantling formworks (4) and a plurality of late dismantling formworks (5), wherein a horizontal top plate (6) is fixed to the upper end of each support rod (1), and a group of early dismantling support units are installed on the upper section of each support rod (1), characterized in that: The early disassembly support unit comprises an inner sleeve (7) coaxially mounted on a support rod (1), the inner sleeve (7) being axially slidable on the support rod (1), and an adjusting nut (8) located below the inner sleeve (7) being screwed onto the support rod (1), the lower end of the inner sleeve (7) being supported on the adjusting nut (8), an outer sleeve (9) being coaxially mounted on the inner sleeve (7), the inner wall of the outer sleeve (9) being sealed against the outer wall of the inner sleeve (7), and the outer sleeve (9) being axially slidable relative to the inner sleeve (7), and the upper end of the outer sleeve (9) being axially slidable relative to the outer wall of the support rod (1). An exhaust gap (10) is left between the walls, a transverse pin hole (11) is opened on the outer wall of the inner sleeve (7), a pin (12) is inserted into the pin hole (11), the lower end of the outer sleeve (9) is supported on the pin (12) so that the outer sleeve (9) cannot move downward, two left-right symmetrical support ears (13) are fixed on the outer wall of the outer sleeve (9), the crossbeam (2) is placed on the support ears (13), the longitudinal beam (3) is perpendicular to the crossbeam (2) and is placed on the crossbeam (2), the early dismantling template (4) is arranged on the longitudinal beam (3), and the late dismantling template (5) is placed on the top plate (6).

2. The early dismantling formwork support system according to claim 1, characterized in that: The inner end of the pin hole (11) is inclined downward.

3. The early dismantling formwork support system according to claim 1, characterized in that: The support rod (1) is composed of two sections, an upper section and an lower section, which are connected via threads.

4. The early dismantling formwork support system according to claim 1, characterized in that: The outer end of the pin is provided with a ring hole (14).

5. The early dismantling formwork support system according to claim 1, characterized in that: A reinforcing rib (15) is connected between the supporting ear (13) and the outer wall of the outer sleeve (9).

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