Prefabricated stair structure

Abstract

The utility model discloses a prefabricated stair structure which is used for connecting a first platform and a second platform, the first platform is provided with a first positioning connecting piece, the second platform is provided with a second positioning connecting piece, and the prefabricated stair structure comprises a stair body, a hoisting connecting piece and a fastening piece. The stair body comprises a steel reinforcement framework and a concrete structure wrapping the steel reinforcement framework, the concrete structure comprises a first connecting section, a step section and a second connecting section which are connected in sequence, and the first connecting section is provided with a first positioning hole used for allowing a first positioning connecting piece to penetrate through; the second connecting section is provided with a second positioning hole for the second positioning connecting piece to penetrate through; the hoisting connecting piece is connected to the stair main body; the fastener is connected to the first positioning connecting piece and the second positioning connecting piece in a fastened mode. The construction period of the staircase can be shortened, and installation is convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model relates to building construction technical field especially, relate to a prefabricated stair structure. BACKGROUND

[0002] Fabricated building is the development trend of future building industry, with the development of fabricated building, the type of fabricated component is more and more. Fabricated building can effectively reduce the amount of wet operation in construction site, thereby reducing construction noise, dust pollution and construction waste.

[0003] Prefabricated stair is a part of fabricated structure, also is the important component of multilayer and high-rise housing construction, is the main escape passage in building engineering. The traditional stair mostly adopts the form of concrete cast in situ, and its construction method is old, and the process is complicated, and the construction period is long, greatly increases the construction cost. UTILITY MODEL CONTENT

[0004] In order to solve the above problems, the utility model provides a prefabricated stair structure for connecting first platform and second platform, the first platform is equipped with first positioning connecting piece, the second platform is equipped with second positioning connecting piece, the prefabricated stair structure includes stair body, hoisting connecting piece and fastener, the stair body includes reinforced skeleton and concrete structure covered outside the reinforced skeleton, the concrete structure includes first connecting section, ladder section and second connecting section connected in turn, the first connecting section is equipped with first positioning hole for penetrating the first positioning connecting piece, the second connecting section is equipped with second positioning hole for penetrating the second positioning connecting piece, the hoisting connecting piece is connected to the stair body, and the fastener is fastened to the first positioning connecting piece and the second positioning connecting piece.

[0005] Further, the first connecting section is equipped with first limiting connecting block, the first platform is equipped with first limiting connecting groove, and the first limiting connecting block is clamped in the first limiting connecting groove.

[0006] Alternatively, the first connecting section is equipped with first limiting connecting groove, the first platform is equipped with first limiting connecting block, and the first limiting connecting block is clamped in the first limiting connecting groove.

[0007] Further, the second connecting section is equipped with second limiting connecting block, the second platform is equipped with second limiting connecting groove, and the second limiting connecting block is clamped in the second limiting connecting groove.

[0008] Alternatively, the second connecting section is equipped with second limiting connecting groove, the second platform is equipped with second limiting connecting block, and the second limiting connecting block is clamped in the second limiting connecting groove.

[0009] Further, the steel reinforcement framework comprises longitudinal steel bars and transverse steel bars, the longitudinal steel bars and the transverse steel bars are arranged staggeredly and are connected by binding.

[0010] Further, the steel reinforcement framework further comprises a lifting point reinforcing rib and a hole reinforcing rib, the lifting point reinforcing rib is arranged on the periphery of the lifting connecting piece, and the hole reinforcing rib is arranged on the periphery of the first positioning hole and the second positioning hole.

[0011] Further, the first positioning hole comprises a mounting hole and a counterbore which are communicated with each other, and the counterbore is used for accommodating the fastener.

[0012] Further, the fastener is a nut, the first positioning connecting piece is a screw rod, and the nut is fastened and threadedly connected to the screw rod; and / or the fastener is a nut, the second positioning connecting piece is a screw rod, and the nut is fastened and threadedly connected to the screw rod.

[0013] Further, the lifting connecting piece comprises a mounting rod, a connecting rod, a connecting cover and a fastening cap, the mounting rod is connected to the connecting cover, the connecting rod is connected to the mounting rod, the connecting rod is perpendicular to the mounting rod, the connecting rod is used for clamping with the steel reinforcement framework, the fastening cap is fastened and connected in the connecting cover, and the fastening cap is used for clamping with a lifting appliance.

[0014] Further, the lifting appliance comprises a lifting ring and a lifting part, the lifting ring is fixedly connected to the lifting part, and the lifting ring is used for clamping with the fastening cap.

[0015] Further, the first positioning hole is provided in plurality, and / or the second positioning hole is provided in plurality.

[0016] The utility model discloses beneficial effect is:

[0017] In the utility model, the stair body can be prefabricated in advance, when the stair is constructed, only needs to hoist the lifting connecting piece through the lifting equipment, installs the stair body, relative to the cast-in-place stair, the utility model simplifies the construction procedure, and the construction period is greatly reduced.

[0018] In the utility model, the fastener is fastened and connected with the first positioning connecting piece and the second positioning connecting piece, so that the positioning and fixed installation of the stair body are realized, and the installation mode is quick and convenient. DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the premise that they do not pay any creative effort, and the drawings are as follows:

[0020] Figure 1 is a structural schematic view of the prefabricated stair structure provided by the embodiments of the present application.

[0021] Figure 2 is an exploded view of the prefabricated stair structure provided by the embodiments of the present application.

[0022] Figure 3 is a structural schematic view of the stair body provided by the embodiments of the present application.

[0023] Figure 4 is an internal structural schematic view of the stair body provided by the embodiments of the present application.

[0024] Figure 5 is a structural schematic view of the lifting connecting piece and the lifting appliance provided by the embodiments of the present application.

[0025] Figure 6 is an exploded view of the lifting connecting piece and the lifting appliance provided by the embodiments of the present application.

[0026] In the drawings: 10, prefabricated stair structure; 20, first platform; 30, second platform; 201, first positioning connecting piece; 202, first limiting connecting groove; 301, second positioning connecting piece; 302, second limiting connecting groove; 1, stair body; 2, lifting connecting piece; 3, fastener; 4, lifting appliance; 11, steel reinforcement framework; 12, concrete structure; 21, mounting rod; 22, connecting rod; 23, connecting cover; 24, fastening cap; 41, lifting ring; 42, lifting part; 111, longitudinal steel reinforcement; 112, transverse steel reinforcement; 113, lifting point reinforcing rib; 114, hole reinforcing rib; 121, first connecting section; 122, stepped section; 123, second connecting section; 1211, first positioning hole; 1212, first limiting connecting block; 1231, second positioning hole; 1232, second limiting connecting block; 12111, mounting hole; 12112, counterbore. DETAILED DESCRIPTION

[0027] The technical scheme of the utility model will be further described below with reference to the drawings and embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following, they only mean the upper, lower, left and right directions consistent with the drawings themselves, and do not limit the structure.

[0028] As shown in the drawings, Figures 1 to 6 The utility model provides a prefabricated stair structure 10 for connecting a first platform 20 and a second platform 30, the first platform 20 is provided with a first positioning connecting piece 201, the second platform 30 is provided with a second positioning connecting piece 301, the prefabricated stair structure 10 includes a stair main body 1, a hoisting connecting piece 2 and a fastener 3, the stair main body 1 includes a steel reinforcement framework 11 and a concrete structure 12 covered outside the steel reinforcement framework 11, the concrete structure 12 includes a first connecting section 121, a ladder section 122 and a second connecting section 123 connected in sequence, the first connecting section 121 is provided with a first positioning hole 1211 for penetrating the first positioning connecting piece 201, the second connecting section 123 is provided with a second positioning hole 1231 for penetrating the second positioning connecting piece 301, the hoisting connecting piece 2 is connected to the stair main body 1, and the fastener 3 is fastened to the first positioning connecting piece 201 and the second positioning connecting piece 301. Specifically, first, the hoisting connecting piece 2 is embedded into the steel reinforcement framework 11, then a pouring mold is arranged outside the steel reinforcement framework 11 to pour concrete, and after the concrete solidifies, the mold is removed, so that the prefabrication of the stair structure 10 is completed. Compared with the stair structure prepared by the on-site pouring method in the prior art, the prefabricated stair structure in the embodiment is prefabricated in advance and then installed on site, which greatly shortens the construction period required by the building and simplifies the process. The steps of on-site installation are as follows: before pouring the first platform 20 and the second platform 30, the first positioning connecting piece 201 and the second positioning connecting piece 301 are embedded into the platform in advance, after pouring is completed, the first positioning connecting piece 201 and the first platform 20 form an integral structure, and the second positioning connecting piece 301 and the second platform 20 form an integral structure. Then the lifting device of the hoisting equipment is connected with the hoisting connecting piece 2, then the hoisting equipment is started to lift the stair main body 1, the first positioning hole 1211 is aligned with the first positioning connecting piece 201, the second positioning hole 1231 is aligned with the second positioning connecting piece 301, then the hoisting equipment is driven to slowly lower the stair main body 1, finally the fastener 3 is fastened to the first positioning connecting piece 201 and the second positioning connecting piece 301, the installation of the prefabricated stair structure 10 is realized, after the installation is completed, the first positioning hole 1211, the second positioning hole 1231 and the position where the hoisting connecting piece 2 is located are filled with mortar, the mortar is smoothed, and then the floor is laid on the surface of the stair, so that the construction of the stair structure is completed.

[0029] In one embodiment, the first connecting section 121 is provided with a first limiting connecting block 1212, and the first platform 20 is provided with a first limiting connecting groove 202, and the first limiting connecting block 1212 is clamped in the first limiting connecting groove 202. Through the connecting mode of the first limiting connecting block and the first limiting connecting groove, the position of the stair body in the vertical direction is limited, and the stability of the stair installation is further ensured.

[0030] In another embodiment, the first connecting section 121 is provided with a first limiting connecting groove 202, and the first platform 20 is provided with a first limiting connecting block 1212, and the first limiting connecting block 1212 is clamped in the first limiting connecting groove 202.

[0031] In one embodiment, the second connecting section 123 is provided with a second limiting connecting block 1232, and the second platform 30 is provided with a second limiting connecting groove 302, and the second limiting connecting block 1232 is clamped in the second limiting connecting groove 302.

[0032] In another embodiment, the second connecting section 123 is provided with a second limiting connecting groove 302, and the second platform 30 is provided with a second limiting connecting block 1232, and the second limiting connecting block 1232 is clamped in the second limiting connecting groove 302.

[0033] In one embodiment, the steel reinforcement cage 11 includes longitudinal steel bars 111 and transverse steel bars 112, and the longitudinal steel bars 111 and the transverse steel bars 112 are arranged alternately and connected by binding. The steel reinforcement cage is used to ensure that the overall strength of the stair structure meets the design requirements.

[0034] In one embodiment, the steel reinforcement cage 11 further includes a lifting point reinforcing rib 113 and a hole reinforcing rib 114, and the lifting point reinforcing rib 113 is arranged on the side of the lifting connecting piece 2, and the hole reinforcing rib 114 is arranged on the side of the first positioning hole 1211 and the second positioning hole 1231. The arrangement of the lifting point reinforcing rib can enhance the structural strength at the position where the lifting connecting piece is located, thereby avoiding the problem of structural failure at the lifting connecting piece during lifting. Similarly, the arrangement of the hole reinforcing rib can enhance the structural strength at the hole position. Specifically, the hole reinforcing rib is in a u shape, and the lifting point reinforcing rib is in a right angle shape.

[0035] In one embodiment, the first positioning hole 1211 includes a mounting hole 12111 and a counterbore 12112 which are in communication with each other, and the counterbore 12112 is used to accommodate the fastener 3. The counterbore is used for the sinking fixation of the fastener, so that the fastener can be embedded into the interior of the stair body, thereby ensuring the flatness and aesthetics of the appearance.

[0036] In one embodiment, the fastener 3 is a nut, and the first positioning connecting piece 201 is a screw rod, and the nut is fastened and threadedly connected to the screw rod; and / or the fastener is a nut, and the second positioning connecting piece 301 is a screw rod, and the nut is fastened and threadedly connected to the screw rod.

[0037] In one embodiment, the hoisting connecting piece 2 comprises a mounting rod 21, a connecting rod 22, a connecting cover 23 and a fastening cap 24, the mounting rod 21 is connected to the connecting cover 23, the connecting rod 22 is connected to the mounting rod 21, the connecting rod 22 is perpendicular to the mounting rod 21, the connecting rod 22 is used for clamping with the steel bar framework 11, the fastening cap 24 is fastened and connected in the connecting cover 23, and the fastening cap 24 is used for clamping with the lifting appliance 4. Further, the top surface of the connecting cover is flush with or lower than the surface of the stair body, so as to embed the hoisting connecting piece into the interior of the stair body, and facilitate subsequent filling of mortar.

[0038] In one embodiment, the lifting appliance 4 comprises a lifting ring 41 and a lifting part 42, the lifting ring 41 is fixedly connected to the lifting part 42, and the lifting ring 41 is used for clamping with the fastening cap 24.

[0039] In one embodiment, the first positioning hole 1211 has a plurality of holes, and / or the second positioning hole 1231 has a plurality of holes. The plurality of hoisting holes are beneficial to further improve the positioning accuracy of installation.

[0040] The above description is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation in the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A prefabricated staircase structure, characterized in that, For connecting a first platform and a second platform, the first platform is provided with a first positioning connector, and the second platform is provided with a second positioning connector; the prefabricated staircase structure includes: The staircase body includes a steel reinforcement frame and a concrete structure covering the steel reinforcement frame. The concrete structure includes a first connecting section, a step section and a second connecting section connected in sequence. The first connecting section is provided with a first positioning hole for the first positioning connector to pass through, and the second connecting section is provided with a second positioning hole for the second positioning connector to pass through. Lifting connector, attached to the main body of the staircase; Fasteners are fastened to the first positioning connector and the second positioning connector.

2. The prefabricated staircase structure according to claim 1, characterized in that, The first connecting segment is provided with a first limiting connecting block, the first platform is provided with a first limiting connecting groove, and the first limiting connecting block is engaged with the first limiting connecting groove; Alternatively, the first connecting segment may be provided with a first limiting connecting groove, and the first platform may be provided with a first limiting connecting block, the first limiting connecting block being engaged with the first limiting connecting groove.

3. The prefabricated staircase structure according to claim 1, characterized in that, The second connecting segment is provided with a second limiting connecting block, and the second platform is provided with a second limiting connecting groove, wherein the second limiting connecting block is engaged with the second limiting connecting groove; Alternatively, the second connecting segment is provided with a second limiting connecting groove, and the second platform is provided with a second limiting connecting block, the second limiting connecting block being engaged with the second limiting connecting groove.

4. The prefabricated staircase structure according to claim 1, characterized in that, The steel reinforcement cage includes longitudinal steel bars and transverse steel bars, which are staggered and tied together.

5. The prefabricated staircase structure according to claim 4, characterized in that, The steel reinforcement cage also includes lifting point reinforcing bars and opening reinforcing bars. The lifting point reinforcing bars are located around the lifting connector, and the opening reinforcing bars are located around the first positioning hole and the second positioning hole.

6. The prefabricated staircase structure according to claim 1, characterized in that, The first positioning hole includes an interconnected mounting hole and a countersunk hole, the countersunk hole being used to accommodate the fastener.

7. The prefabricated staircase structure according to claim 1, characterized in that, The fastener is a nut, the first positioning connector is a screw, and the nut is threadedly connected to the screw; and / or the fastener is a nut, the second positioning connector is a screw, and the nut is threadedly connected to the screw.

8. The prefabricated staircase structure according to claim 1, characterized in that, The lifting connector includes an installation rod, a connecting rod, a connecting cover, and a fastening cap. The installation rod is connected to the connecting cover, and the connecting rod is connected to the installation rod. The connecting rod is perpendicular to the installation rod and is used to engage with the reinforcing steel cage. The fastening cap is fastened inside the connecting cover and is used to engage with the lifting device.

9. The prefabricated staircase structure according to claim 8, characterized in that, It also includes a lifting device, which includes a lifting ring and a lifting part. The lifting ring is fixedly connected to the lifting part and is used to engage with the fastening cap.

10. The prefabricated staircase structure according to claim 1, characterized in that, There are multiple first positioning holes, and / or multiple second positioning holes.

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