A prefabricated mold base for staircase construction

Abstract

The utility model discloses a prefabricated formwork for stair construction, which relates to the technical field of stair construction in construction engineering; it comprises a side beam, a first side panel, a second side panel, a first cross piece, a second cross piece, tension bolts, a bottom panel, a supporting bottom rod, a supporting plate frame, an adjusting screw, a sleeve, an adjusting nut, and a base; a second side panel is fixed to the inner side of the first side panel; a slot is provided on the second side panel; a first cross piece is vertically inserted in the slot; a second cross piece is inserted above the first cross piece; the screws of the tension bolts are tightened by nuts; the bottom panel, the first side panel, the first cross piece, and the second cross piece form a stair casting area after being fixed; the formwork can avoid the use of bolts and other fixings in the concrete casting area while ensuring the stability of the casting area, and the formwork is easier to dismantle than the original construction method, thereby reducing the loss of the wooden formwork during the dismantling process.

Description

Technical Field

[0001] The utility model relates to the technical field of stair construction in construction engineering, in particular to a prefabricated mold base for stair construction. Background Art

[0002] Stairs, as an indispensable part of buildings, undertake the important function of people going up and down the stairs. Even though we now have elevators, stairs are also important safe fire escape routes.

[0003] When building the stairs, the traditional method is to use wooden formwork for construction support. The wooden formwork is fixed together by bolts, rivets and other fixing methods to form the casting area of ​​the stairs. The completed part of each floor of the stairs is waited for to dry and solidify before the wooden formwork is removed. The wooden formwork is not only difficult to disassemble and assemble during repeated disassembly and assembly, but also suffers from great loss after multiple disassembly and assembly. During the construction and fixing process of the formwork, bolts, rivets and other fixings are used in the casting area, resulting in more nail holes on the cast concrete during dismantling, which affects the appearance and also causes partial damage to the concrete of the stairs. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a prefabricated formwork for stair construction, which can avoid the use of bolts and other fixings in the concrete pouring area while ensuring the stability of the pouring area. In addition, the formwork is easier to dismantle than the original construction method, reducing the loss of the wooden formwork during the dismantling process.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A prefabricated mold base for staircase construction, comprising a side beam, a first side panel, a second side panel, a first crossbar, a second crossbar, tension bolts, a bottom plate, a supporting bottom rod, a supporting plate frame, an adjusting screw, a sleeve, an adjusting nut, and a base; a second side panel is fixed to the inner side of the first side panel; slots are equidistantly provided on the second side panel along the inclined direction; the slots are arranged in a stepped manner; a layer of crossbar is vertically inserted in the slot; a second crossbar is inserted above the first crossbar; a groove for placing tension bolts is provided in the middle of the first crossbar; a notch for embedding the tension bolts is horizontally provided on the body of the first side panel; a side beam is provided on the outer side of the first side panel; the position of the notch of the side beam and the first side panel is consistent; the screw of the tension bolt extends out of the side beam and is tightened by a nut;

[0007] The base is hinged to the bottom of the sleeve; an adjusting nut is movably provided on the top of the sleeve; an adjusting screw is provided inside the adjusting nut, and the adjusting nut rotates to control the extension length of the adjusting screw; a supporting plate frame is fixed to the top of the adjusting screw; the supporting bottom rod is placed in the supporting plate frame; a bottom plate is provided on the surface of the supporting bottom rod, and the bottom plate, the first side plate, the first cross bar, and the second cross bar form a stair casting area after being fixed.

[0008] Preferably, a supporting rod is provided outside the notch of the side beam; the cast steel gasket on the tension bolt fits with the supporting rod; and the cast steel gasket is pressed against the supporting rod by a nut.

[0009] Preferably, the supporting bottom bar comprises a cross bar and a longitudinal bar; the cross bar is below the longitudinal bar; a notch for engaging with the longitudinal bar is formed on the cross bar; and the cross bar is engaged with the supporting plate frame.

[0010] Preferably, when building a staircase with more than one level, legs are provided below the base to cooperate with the staircase on the lower level for support.

[0011] Preferably, an adjusting disk is fixed on the nut.

[0012] Preferably, steel bars are laid in the gap between the first layer of cross bars and the bottom plate; a through hole is reserved between the bottommost layer of cross bars and the bottom plate, and the poured concrete is connected to the stair platform through the through hole.

[0013] Beneficial effects of the utility model:

[0014] The prefabricated formwork base is easy to build and dismantle, while reducing the loss of the wooden formwork during the removal process; it also avoids the use of fixings in the wooden formwork casting area, which results in nail holes in the concrete after the concrete solidifies and the wooden formwork is removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall connection structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the inner connection structure of the utility model.

[0018] Figure 3 It is a schematic diagram of the disassembled structure of the utility model.

[0019] Figure 4 It is a schematic diagram of the bottom connection structure of the utility model.

[0020] Figure 5 It is a schematic diagram of the support relationship of the upper stairs of the present utility model.

[0021] In the figure, side beam 1, first side plate 2, second side plate 3, slot 3.1, first cross bar 4, second cross bar 5, tension bolt 6, cast steel gasket 6.1, screw 6.2, nut 6.3, adjustment plate 6.4, bottom plate 7, support bottom bar 8, cross bar 8.1, longitudinal bar 8.2, notch 8.3, support plate frame 9, adjustment screw 10, sleeve 11, adjustment nut 12, base 13, support cylinder rod 14, support leg 15, steel bar 16, through hole 17, stairs 18, and notch 19. DETAILED DESCRIPTION

[0022] like Figure 1-4 As shown, a prefabricated mold base for staircase construction, wherein the side beam 1, the first side plate 2, the second side plate 3, the first crossbar 4, and the second crossbar 5 are made of wooden formwork materials. The second side plate 3 is fixed to the inner side of the first side plate 2; slots 3.1 are equidistantly provided on the second side plate 3 along the inclined direction; the slots 3.1 are arranged in a stepped manner; a layer of crossbar 4 is vertically inserted in the slots 3.1; a second crossbar 5 is inserted above the first crossbar 4; a groove for placing the tension bolt 6 is provided in the middle of the first crossbar 4; a notch 19 for embedding the tension bolt 6 is horizontally provided on the body of the first side plate 2; a side beam 1 is provided on the outer side of the first side plate 2; the side beam 1 is provided with the same notch structure, and the position is consistent with the notch 19 of the first side plate 2; the screw 6.2 of the tension bolt 6 extends out of the side beam 1 and is tightened by a nut 6.3; an adjustment disk 6.4 is fixed on the nut 6.3 for easy adjustment. Furthermore, in order to improve the supporting performance, a supporting rod 14 is provided on the outside of the notch 19 of the side beam 1; the cast steel gasket 6.1 on the tension bolt 6 is fitted with the supporting rod 14; the cast steel gasket 6.1 is pressed against the supporting rod 14 through the nut 6.3; so that the supporting rod 14 is supported to a certain extent on the base 13.

[0023] like Figure 1 , 4As shown, a base 13 is provided at the bottom of the support rod 14; the base 13 is hinged with the bottom of the sleeve 11; an adjusting nut 12 is movably provided at the top of the sleeve 11; an adjusting screw 10 is provided inside the adjusting nut 12, and the adjusting nut 12 rotates to control the extension length of the adjusting screw 10; a support plate frame 9 is fixed on the top of the adjusting screw 10; the support bottom rod 8 is placed in the support plate frame 9; specifically, the support bottom rod 8 includes a cross bar 8.1 and a longitudinal bar 8.2; the cross bar 8.1 is below the longitudinal bar 8.2; a notch 8.3 for engaging with the longitudinal bar 8.2 is provided on the cross bar 8.1; the cross bar 8.1 is engaged with the support plate frame 9. A bottom plate 7 is provided on the surface of the support bottom rod 8, and the various components are fixedly combined by utilizing the characteristics of the tension bolts 6 and the plug-in structure. After being fixed, the bottom plate 7, the first side plate 2, the first cross bar 4, and the second cross bar 5 form a casting area of ​​the staircase 18.

[0024] like Figure 2 , 5 As shown, when building more than one layer of stairs 18, legs 15 are provided below the base 13 to cooperate with the stairs 18 of the lower layer for support. A through hole 17 is reserved between the bottommost crossbar 4 and the bottom plate 7, and the poured concrete is connected to the platform of the stairs 18 through the through hole 17. If the fixing method is not separately introduced above, it is welded or screwed fastened using the common technical means of technicians in the industry.

[0025] The workflow is as follows:

[0026] The staircase 18 is constructed from bottom to top. When constructing the staircase 18 between the first floor and the second floor, the base 13 is placed on the ground, and then the two ends of the first crosspiece 4 are respectively inserted into the corresponding slots 3.1 of the second side plate 3; the screw rod 6.2 of the tension bolt 6 is placed in the first crosspiece 4; and the second crosspiece 5 is inserted to close it; the first side plate 2 and the side beam 1 are installed on the outer side of the second side plate 3 in sequence, and the notches 19 of the first side plate 2 and the side beam 1 are embedded with the screw rod 6.2; then the support cylinder rod 14 is pressed by the nut 6.3 and the cast steel gasket 6.1, and the assembled parts are placed on the base 13 after the preliminary assembly of the frame is completed; finally, the support bottom rod 8 is assembled, wherein the crossbar 8.1 and the longitudinal rod 8.2 are clamped and fixed, and cooperate with the support plate frame 9, and the length of the adjustment screw rod 10 is adjusted by the adjustment nut 12, so that the bottom plate 7 is pressed by the support bottom rod 8; after pressing, the bottom plate 7 and the first side plate 2, the first crosspiece 4, and the second crosspiece 5 form the casting area of ​​the staircase 18. Steel bars 16 are laid in the gap between the first crossbar 4 and the bottom plate 7 to serve as support for the concrete. After the concrete is poured, it is left to solidify and take shape.

[0027] When laying the stairs 18 above the second floor, since the base 13 cannot directly cooperate with the previously laid lower stairs 18, a support leg 15 is provided below the base 13 to cooperate and support the lower stairs 18. The other steps remain unchanged, and installation and pouring are carried out in sequence to complete the construction of the stairs 18 between each floor.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A prefabricated mold base for staircase construction, characterized in that: It includes a side beam, a first side panel, a second side panel, a first cross bar, a second cross bar, tension bolts, a bottom plate, a supporting bottom rod, a supporting plate frame, an adjusting screw, a sleeve, an adjusting nut, and a base; a second side panel is fixed to the inner side of the first side panel; slots are equidistantly provided on the second side panel along the inclined direction, and the slots are arranged in a stepped manner; a layer of cross bars is vertically inserted in the slots; a second layer of cross bars is inserted above the first layer of cross bars; a groove for placing tension bolts is provided in the middle of the first layer of cross bars; a notch for embedding the tension bolts is horizontally provided on the body of the first side panel; a side beam is provided on the outer side of the first side panel; the position of the notch of the side beam and the first side panel are consistent; the screw of the tension bolt extends out of the side beam and is tightened by a nut; The base is hinged to the bottom of the sleeve; an adjusting nut is movably provided on the top of the sleeve; an adjusting screw is provided inside the adjusting nut, and the adjusting nut rotates to control the extension length of the adjusting screw; a supporting plate frame is fixed to the top of the adjusting screw; the supporting bottom rod is placed in the supporting plate frame; a bottom plate is provided on the surface of the supporting bottom rod, and the bottom plate, the first side plate, the first cross bar, and the second cross bar form a stair casting area after being fixed.

2. A prefabricated mold for staircase construction according to claim 1, characterized in that: A supporting rod is arranged outside the notch of the side beam; the cast steel gasket on the tension bolt fits with the supporting rod; the cast steel gasket is pressed against the supporting rod by a nut.

3. A prefabricated mold for staircase construction according to claim 1, characterized in that: The supporting bottom bar comprises a cross bar and a longitudinal bar; the cross bar is below the longitudinal bar; a notch for clamping with the longitudinal bar is provided on the cross bar; and the cross bar is clamped and matched with the supporting plate frame.

4. A prefabricated mold for staircase construction according to claim 1, characterized in that: When building a staircase with more than one level, a support leg is provided below the base, and the support leg cooperates with the staircase of the lower level for support.

5. The prefabricated mold base for staircase construction according to claim 2, characterized in that: An adjusting disk is fixed on the nut.

6. A prefabricated mold for staircase construction according to claim 1, characterized in that: Steel bars are laid in the gap between the first layer of crosspieces and the bottom plate; a through hole is reserved between the bottommost layer of crosspieces and the bottom plate, and the poured concrete is connected to the stair platform through the through hole.

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