Angle-adjustable plug-in steel formwork

Abstract

The utility model relates to an angle-adjustable bolt type steel formwork, which comprises a panel, left and right vertical ribs are fixedly welded to the left and right sides of the panel, upper and lower horizontal ribs are fixedly welded to the upper and lower ends of the panel, two middle horizontal ribs are fixedly welded to the middle part of the panel in the transverse direction, a plurality of vertical bolt holes are fixedly welded to the left and right vertical ribs, horizontal bolt holes are fixedly welded to the upper and lower horizontal ribs, a plurality of the angle-adjustable bolt type steel formworks can be combined and assembled in the transverse and vertical directions, and a bolt shaft is arranged in the middle of the adjacent two bolt holes of the two combined angle-adjustable bolt type steel formworks. The utility model has the advantages of simple structure, convenient adjustment of the assembly connection angle, applicability to the tunnel vault concrete construction of different curvature radii, simple and fast installation and removal of the bolt connection system, multiple turnovers, beautiful concrete pouring and molding, and low comprehensive cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to tunnel engineering vault concrete construction technical field especially relates to a adjustable angle bolt type steel formwork. BACKGROUND

[0002] At present, some tunnels with small section size cannot use formwork trolley for lining pouring due to space limitation and still use the way of support frame and formwork combination for construction. The commonly used formwork has wood formwork and steel formwork, wherein the steel formwork has the characteristics of multiple circulation use, concrete pouring forming beauty, low comprehensive cost etc. The steel formwork is usually rectangular, the width is 100mm-300mm, the length is 450mm-1500mm, and the height is 55mm, which can be expanded along the length and width direction. The conventional steel formwork is tightly spliced, and the rib plate around is connected by high-strength bolts. Due to the large number of connecting bolts, the installation and removal efficiency is very low. After the conventional steel formwork is spliced, it can only be used for plane type concrete member construction, and cannot be used for curved surface type tunnel vault concrete construction.

[0003] In view of the above situation, when the tunnel vault concrete construction is carried out by the way of support frame and steel formwork combination, a steel formwork capable of realizing curved surface splicing and rapid installation and removal is needed. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving the deficiency of prior art and provides a adjustable angle bolt type steel formwork.

[0005] In order to achieve the above purpose, the following technical scheme is adopted: a adjustable angle bolt type steel formwork, including panel, the left and right sides of the panel are respectively fixedly welded with left vertical rib and right vertical rib, the upper and lower ends of the panel are respectively fixedly welded with upper horizontal rib and lower horizontal rib, two middle horizontal ribs are fixedly welded in the middle part of the panel in transverse direction, a plurality of vertical bolt holes are fixedly welded on the left vertical rib and the right vertical rib, horizontal bolt holes are fixedly welded on the upper horizontal rib and the lower horizontal rib, a plurality of the adjustable angle bolt type steel formworks can be combined and spliced in transverse direction and vertical direction, and a bolt shaft is arranged in the middle of the two adjacent bolt holes of the two spliced adjustable angle bolt type steel formworks.

[0006] Further, the included angle between the left vertical rib, the right vertical rib, the upper horizontal rib, the lower horizontal rib and the panel is 45°, and the included angle between the middle horizontal rib and the panel is 90°.

[0007] Further, the pin hole on the left vertical rib and the pin hole on the right vertical rib form a pair, the vertical distance between the bottom surface of the pin hole on the left vertical rib and the top surface of the pin hole on the right vertical rib in the same group is 2mm; the horizontal distance between the left side surface of the pin hole on the upper horizontal rib and the right side surface of the pin hole on the lower horizontal rib is 2mm.

[0008] Further, the width of the panel is 100mm-300mm, the length is 500mm-1500mm, and the thickness is 4-6mm; the thickness of the left vertical rib, the right vertical rib, the upper horizontal rib, the lower horizontal rib and the middle horizontal rib is 8mm-10mm, and the distance between the two adjacent horizontal ribs is consistent.

[0009] Further, the pin hole is curled from a steel plate with a thickness of 6mm-8mm, the height of the pin hole is 30mm-50mm, and the hole diameter is 8mm-10mm.

[0010] Further, the pin shaft is L-shaped, the length of the long side of the pin shaft is 110mm-150mm, the length of the long side is 3 times the length of the short side, the diameter is 6mm-8mm, and the pin shaft has magnetism.

[0011] Further, the joint between the adjustable angle pin type steel formwork is filled with joint sealing glue.

[0012] The steel formwork structure of the utility model is simple, the angle adjustment range of the assembled connection reaches 0°-90°, can be suitable for tunnel arch concrete construction of different curvature radii, the pin connection system is simple, quick and convenient to assemble and disassemble, the pin shaft has magnetism and can be adsorbed on the rib plate to avoid loss, the steel formwork has the advantages of multiple turnover use, concrete pouring forming beauty, low comprehensive cost and the like. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a structure schematic view of the adjustable angle pin type steel formwork;

[0014] Fig. 2 It is a split schematic view of the adjustable angle pin type steel formwork;

[0015] Fig. 3 It is a structure schematic view of the adjustable angle pin type steel formwork assembly;

[0016] Fig. 4 It is a structure schematic view of the adjustable angle pin type steel formwork and support frame system;

[0017] In the drawing: 1-panel; 2-left vertical rib; 3-right vertical rib; 4-upper horizontal rib; 5-lower horizontal rib; 6-middle horizontal rib; 7-pin hole; 8-pin shaft; 9-joint sealing glue, 10-supporting truss; 11-full support frame; 12-height adjusting handle;

[0018] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0019] The present invention will be further described below with reference to embodiments:

[0020] like Figs. 1-4 As shown, an adjustable angle pin-type steel formwork includes a panel 1. A left vertical rib 2 and a right vertical rib 3 are fixedly welded to the left and right sides of the panel 1, respectively. An upper horizontal rib 4 and a lower horizontal rib 5 are fixedly welded to the upper and lower ends of the panel 1, respectively. Two middle horizontal ribs 6 are fixedly welded to the middle of the panel 1. Several vertical pin holes 7 are fixedly welded to the left vertical rib 2 and the right vertical rib 3, respectively. Horizontal pin holes 7 are fixedly welded to the upper horizontal rib 4 and the lower horizontal rib 5, respectively. Multiple adjustable angle pin-type steel formwork panels can be combined and assembled in the horizontal and vertical directions. A pin shaft 8 is inserted between two adjacent pin holes 7 on two assembled adjustable angle pin-type steel formwork panels.

[0021] Specifically, for the horizontally spliced ​​adjustable angle pin-type steel formwork, the pin holes 7 on the right vertical rib 3 of the left steel formwork correspond one-to-one with the pin holes 7 on the left vertical rib 2 of the right steel formwork. After adjustment and alignment, they are respectively inserted into the pin shaft 8 for fixation. For the vertically spliced ​​adjustable angle pin-type steel formwork, the pin holes 7 on the lower horizontal rib 5 of the upper steel formwork correspond one-to-one with the pin holes 7 on the upper horizontal rib 4 of the lower steel formwork. After adjustment and alignment, they are respectively inserted into the pin shaft 8 for fixation.

[0022] The angle between the left vertical rib 2, right vertical rib 3, upper horizontal rib 4, lower horizontal rib 5 and the panel 1 is 45°, and the angle between the middle horizontal rib 6 and the panel 1 is 90°.

[0023] Specifically, this allows the adjustable angle of the pin-type steel formwork assembly to be adjusted within a range of 0° to 90°.

[0024] The pin holes 7 on the left vertical rib 2 and the pin holes 7 on the right vertical rib 3 are paired together. The vertical distance between the bottom surface of the pin hole 7 on the left vertical rib 2 and the top surface of the pin hole 7 on the right vertical rib 3 in the same group is 2mm. The spacing between each pair of adjacent pin holes 7 on the vertical rib is the same.

[0025] The horizontal distance between the left side of the pin hole 7 on the upper transverse rib 4 and the right side of the pin hole 7 on the lower transverse rib 5 is 2mm.

[0026] The width of the panel 1 is 100-300 mm, the length is 500-1500 mm, and the thickness is 4-6 mm; the thickness of the left vertical rib 2, the right vertical rib 3, the upper horizontal rib 4, the lower horizontal rib 5, and the middle horizontal rib 6 is 8-10 mm, and the spacing between adjacent two horizontal ribs is consistent.

[0027] The bolt hole 7 is curled from a steel plate with a thickness of 6-8 mm, the height of the bolt hole 7 is 30-50 mm, and the hole diameter is 8-10 mm.

[0028] The bolt shaft 8 is L-shaped, the length of the long side of the bolt shaft 8 is 110-150 mm, the length of the long side is 3 times the length of the short side, the diameter is 6-8 mm, and the bolt shaft 8 has magnetism.

[0029] Specifically, the bolt shaft 8 can be adsorbed on the rib plate and is not easy to lose.

[0030] The joint between the adjustable-angle bolt-type steel formworks is filled with the joint filling glue 9.

[0031] A construction method of an adjustable-angle bolt-type steel formwork, the construction method comprising the following steps:

[0032] S1, after the tunnel floor and side wall are constructed, according to the tunnel section size, lining thickness, surrounding rock condition, and other conditions, a tunnel vault concrete pouring construction scheme is prepared, and the type and erection parameters of the selected support frame and support truss 10 are determined;

[0033] S2, a full-support frame 11 is erected inside the tunnel;

[0034] S3, the support truss 10 is erected on the full-support frame 11;

[0035] S4, the adjustable-angle bolt-type steel formwork is laid on the support truss 10 in blocks, and the adjustable-angle bolt-type steel formworks are connected through the bolt shaft 8;

[0036] S5, the height adjustment handle 12 of the full-support frame 11 is adjusted so that the upper surface of the panel 1 is attached to the lower contour line of the tunnel vault;

[0037] S6, the joint filling glue 9 is used to fill the joint between the adjustable-angle bolt-type steel formworks;

[0038] S7, the end formwork of the tunnel vault is installed according to the conventional method, and the vault concrete is poured;

[0039] S8, after the concrete is hardened to reach the specified strength, the height adjustment handle 12 of the full-support frame 11 is adjusted to make the support truss 10 and the adjustable-angle bolt-type steel formwork fall, and then the steel formwork is quickly removed by pulling out the bolt shaft 8.

[0040] The utility model has been described above by way of example, and obviously the utility model is not limited to the above-described mode in its implementation, and any improvement using the method concept and technical solution of the utility model, or direct application in other occasions without improvement, is within the scope of protection of the utility model.

Claims

1. An angle adjustable plug-in steel formwork, characterized in that, The utility model provides a kind of adjustable angle bolt type steel formwork, including panel (1), left vertical rib (2) and right vertical rib (3) are respectively fixedly welded on the left and right sides of the panel (1), upper horizontal rib (4) and lower horizontal rib (5) are respectively fixedly welded on the upper and lower ends of the panel (1), two middle horizontal ribs (6) are fixedly welded in the middle of the panel (1), a plurality of vertical bolt holes (7) are respectively fixedly welded on the left vertical rib (2) and the right vertical rib (3), horizontal bolt holes (7) are respectively fixedly welded on the upper horizontal rib (4) and the lower horizontal rib (5), and the adjustable angle bolt type steel formwork can be assembled along horizontal and vertical direction, and the bolt shaft (8) is arranged in the middle of two adjacent bolt holes (7) of the adjustable angle bolt type steel formwork.

2. The angle adjustable plug-in steel formwork according to claim 1, characterized in that, The included angle between the left vertical rib (2), right vertical rib (3), upper horizontal rib (4), lower horizontal rib (5) and the panel (1) is 45°, and the included angle between the middle horizontal rib (6) and the panel (1) is 90°.

3. The angle adjustable plug-in steel formwork according to claim 1, wherein, The bolt holes (7) on the left vertical rib (2) and the bolt holes (7) on the right vertical rib (3) are in pairs, and the vertical distance between the bottom surface of the bolt hole (7) on the left vertical rib (2) and the top surface of the bolt hole (7) on the right vertical rib (3) in the same group is 2mm; the horizontal distance between the left side surface of the bolt hole (7) on the upper horizontal rib (4) and the right side surface of the bolt hole (7) on the lower horizontal rib (5) is 2mm.

4. The angle adjustable plug-in steel formwork according to claim 1, wherein, The width of the panel (1) is 100mm-300mm, the length is 500mm-1500mm, and the thickness is 4-6mm; the thickness of the left vertical rib (2), right vertical rib (3), upper horizontal rib (4), lower horizontal rib (5) and middle horizontal rib (6) is 8mm-10mm, and the distance between adjacent two horizontal ribs is consistent.

5. An angle adjustable plug-in steel formwork according to claim 4, characterized in that, The bolt hole (7) is curled from a steel plate with a thickness of 6mm-8mm, the height of the bolt hole (7) is 30mm-50mm, and the hole diameter is 8mm-10mm.

6. An angle adjustable plug-in steel formwork according to claim 5, characterized in that, The bolt shaft (8) is L-shaped, the long side length of the bolt shaft (8) is 110mm-150mm, the long side length is 3 times the short side length, the diameter is 6mm-8mm, and the bolt shaft (8) has magnetism.

7. The angle adjustable plug-in steel formwork according to claim 1, wherein, The joint between the adjustable angle bolt type steel formworks is filled with joint sealant (9).

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