CN211172783U

CN211172783U - Prefabricated staircase structure

Info

Publication number: CN211172783U
Application number: CN201921639744.2U
Authority: CN
Inventors: 柯贤材; 张立烨
Original assignee: Zhejiang Hongxiang Yuanda Construction Technology Co ltd
Current assignee: Zhejiang Hongxiang Yuanda Construction Technology Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-08-04
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses a prefabricated staircase structure, which comprises a lower platform plate, a stair section plate and an upper platform plate which are integrated by reinforced concrete precast, wherein a pair of through preformed holes are arranged on the lower platform plate and the lower platform plate, and a plurality of vertical downward railing fixing pre-embedded sleeves are arranged at one ends of the stair section plate and the upper platform plate, which are far away from the wall surface; meanwhile, vertically downward wall body fixing embedded sleeves are arranged in the middle of the lower platform plate and the ladder section plate; the side surfaces of the lower platform plate and the higher bench of the bench plate are pre-embedded with two pairs of pre-embedded hanging nails arranged along the width direction of the stairs, and the low part and the high part of the bench plate are respectively provided with the pre-embedded hanging nails arranged perpendicular to the stairs. The utility model discloses a prefabricated staircase structure, the structure is comparatively firm, convenient transport and installation simultaneously.

Description

Prefabricated staircase structure

Technical Field

The utility model relates to a building engineering component technical field especially relates to a prefabricated staircase structure.

Background

Stairs are the main vehicles connecting the floors. The basic function of the stair is to go up and down the floor safely, in addition, high-rise, super high-rise are the main direction of modern building development, and on the premise of guaranteeing the quality, it is the important index of modern construction technology to improve the efficiency of construction. The existing stairs are mainly divided into wood stairs, steel stairs and cast-in-place concrete stairs, the wood stairs are limited in application range due to the fact that fire cannot be prevented, the steel stairs are high in construction speed and poor in sound insulation effect, the cast-in-place concrete stairs are good in overall rigidity and sound insulation effect, and are suitable for buildings with special requirements and high shockproof requirements, but weak items which are not negligible due to the fact that templates are complex to support and support, the wet workload is large and the like exist, and therefore the prefabricated stairs become the development direction of the stairs in the building industry.

At present, sectional type combined stairs are often manufactured in a factory in advance, and then the prefabricated stair sections are conveyed to a site to be assembled on the site, so that the manufacturing efficiency of the whole stairs can be improved. Because the stair need bear great load, whole weight is also great, consequently prefabricated stair need have stronger structure.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide a prefabricated staircase structure, it is comparatively firm to construct, convenient transport and installation simultaneously.

The technical scheme of the utility model as follows:

a prefabricated staircase structure comprises a lower platform plate, a stair section plate and an upper platform plate which are integrally precast by reinforced concrete, wherein a pair of through preformed holes are formed in the lower platform plate and the lower platform plate, and a plurality of vertically downward railing fixing and pre-embedding sleeves are arranged at one ends of the stair section plate and the upper platform plate, which are far away from a wall surface; meanwhile, vertically downward wall body fixing embedded sleeves are arranged in the middle of the lower platform plate and the ladder section plate; the side surfaces of the lower platform plate and the higher bench of the bench plate are pre-embedded with two pairs of pre-embedded hanging nails arranged along the width direction of the stairs, and the low part and the high part of the bench plate are respectively provided with the pre-embedded hanging nails arranged perpendicular to the stairs.

Further, the inner diameter of the preformed hole gradually decreases downwards. The reinforcing steel bars in the reserved holes have higher stability after concrete is poured.

Furthermore, the inner diameter of the upper end of the preformed hole is 60mm, and the inner diameter of the lower end of the preformed hole is 50 mm.

Furthermore, two pairs of preformed hole reinforcing ribs arranged in different heights are pre-embedded in the height direction of each preformed hole. The integral strength of the preformed hole before and after installation is ensured.

Furthermore, two hanging nail reinforcing ribs a are arranged in the ladder section plate corresponding to one hanging nail, and the distance between the two hanging nail reinforcing ribs a is matched with the width of the hanging nail and is smaller than the width of the hanging nail head.

Furthermore, the middle part of the hanging nail reinforcing rib is a right-angle reinforcing steel bar, and the two right-angle ends are connected with the reinforcing steel bars with the same inclination angle as the bench boards.

Furthermore, the right-angle end corresponding to the hanging nail reinforcing rib a penetrates through a hanging nail reinforcing rib b along the width direction of the stairs. Further enhancing the overall strength of the hanging nail.

Furthermore, two anti-skid grooves extending in the width direction of the stairs are formed in the outward edge of the stair flight plate. The situation of skidding appears in the bench board in user's walking can be prevented.

Further, the distance between the two anti-skid grooves is preferably 30mm, and the anti-skid grooves are preferably trapezoidal grooves

Furthermore, an inclined water dripping trough along the back surface of the stair section plate is arranged on the back surface of the stair section plate. Convenient drainage

The utility model has the advantages that: the two groups of embedded hanging nails are arranged, so that the stability and safety of the stairs during lifting can be greatly guaranteed, and meanwhile, the stairs can be conveniently placed, so that the preformed holes in the stairs are conveniently aligned during placement, and the transportation is convenient; the horizontal hanging nails and the vertical hanging nails are respectively arranged, so that the stair is conveniently lifted and installed; hang nail strengthening rib an and hang nail strengthening rib b that nail department set up crisscross setting, can guarantee to hang the structural stability of nail, also can strengthen the holistic intensity of stair simultaneously.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of a main view component of the prefabricated staircase structure provided by the present invention;

FIG. 2 is a schematic top view of FIG. 1;

fig. 3 is a schematic structural view of the anti-slip groove.

In the figure: 1-lower platform plate; 2-a bench board; 3-upper platform plate; 4-preparing a hole; 5, fixing the embedded sleeve on the railing; 6-embedding hanging nails; 7-fixing the embedded sleeve on the wall; 8-reserving hole reinforcing ribs; 9-hanging nail reinforcing ribs a; 10-hanging nail reinforcing ribs b; 11-a drip line trough; 12-anti-slip groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1 and 2, a prefabricated staircase structure comprises a lower platform plate 1, a stair section plate 2 and an upper platform plate 3 which are integrally precast by reinforced concrete, wherein a pair of through preformed holes 4 are formed in the lower platform plate 1 and the lower platform plate 3 and penetrate through pre-buried reinforcing steel bars of a building for fixing, in order to ensure that the reinforcing steel bars in the preformed holes 4 have higher stability after the concrete is poured, the inner diameter of the preformed holes 4 is gradually reduced downwards, preferably, the inner diameter of the upper end of each preformed hole 4 is 60mm, the inner diameter of the lower end of each preformed hole 4 is 50mm, and meanwhile, two pairs of preformed hole reinforcing ribs 8 with different heights are pre-buried in the height direction of each preformed hole 4 (the preformed hole reinforcing ribs 8 are arranged on the outer side of the preformed holes 4 and are in a U shape), so that the overall strength of the preformed holes 4 before and after installation is ensured; a plurality of vertically downward railing fixing embedded sleeves 5 are arranged at one ends, far away from the wall surface, of the stair section plate 2 and the upper platform plate 3 and are used for fixing the railings of the stair subsequently; meanwhile, the middle parts of the lower platform plate 1 and the stair section plate 2 are provided with vertical downward wall fixing embedded sleeves 7 for connection with the wall surface during subsequent stair installation.

Because the prefabricated staircase is often very heavy in weight, in order to facilitate carrying, two pairs of embedded hanging nails 6 (only one embedded hanging nail 6 is shown in figure 2, and both sides of the staircase are arranged along the width direction of the staircase) are embedded in the side surfaces of the higher sections of the lower platform plate 1 and the section plate 2, the embedded hanging nails 6 vertical to the staircase are respectively arranged at the lower part and the higher part of the section plate 2, and two groups of embedded hanging nails 6 are arranged, so that the stability and the safety of the staircase during lifting can be greatly ensured, the staircase can be conveniently placed, and the preformed holes 4 on the staircase can be conveniently aligned during placing; simultaneously in order to guarantee that the hanging nail 6 intensity and the stability that the stair direction set up are enough, correspond one in the bench board 2 and hang nail 6 and be provided with two and hang nail strengthening rib a 9, two hang the width that the interval of nail strengthening rib a 9 matches and is less than hanging the nail pin fin with hanging 6 width of nail, hang nail strengthening rib 9 middle part and be the right angle reinforcing bar, and two right angle ends all connect the reinforcing bar with the same inclination of bench board 2. Simultaneously, the right-angle end corresponding to the hanging nail reinforcing rib a 9 penetrates through a hanging nail reinforcing rib b 10 along the width direction of the stairs, the integral strength of the hanging nail is further enhanced, and the length of the hanging nail reinforcing rib b 10 is slightly smaller than the width of the stairs.

Further, referring to fig. 3, in order to prevent the user from slipping during walking on the stair step boards 2, two anti-slip grooves 12 extending along the width direction of the stairs are formed in the outward edge of the stair step boards 2, the distance between the two anti-slip grooves 12 is preferably 30mm, and the anti-slip grooves are preferably trapezoidal grooves.

In addition, in order to facilitate drainage, an inclined drip groove 11 is formed along the back surface of the step plate 2 at the back surface of the step plate 2.

In this application, stair structure is concrete prefabricated staircase, all sets up the reinforcing bar and pours the concrete in lower landing slab 1, stair board 2 and the upper landing slab 3 and make, and steel bar structure in it is the crisscross steel bar structure of conventionality, consequently no longer gives unnecessary details here. In addition, the size of the stairs and the size of the reinforcing steel bars can be calculated and selected by the technical personnel according to actual needs.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a prefabricated staircase structure, includes that reinforced concrete pours integrative lower landing slab, bench board and last landing slab in advance, its characterized in that: a pair of through preformed holes are formed in the lower platform plate and the lower platform plate, and a plurality of vertically downward railing fixing embedded sleeves are arranged at one ends, far away from the wall surface, of the ladder section plate and the upper platform plate; meanwhile, vertically downward wall body fixing embedded sleeves are arranged in the middle of the lower platform plate and the ladder section plate; the side surfaces of the lower platform plate and the higher bench of the bench plate are pre-embedded with two pairs of pre-embedded hanging nails arranged along the width direction of the stairs, and the low part and the high part of the bench plate are respectively provided with the pre-embedded hanging nails arranged perpendicular to the stairs.

2. The prefabricated staircase structure of claim 1, wherein: the inner diameter of the prepared hole gradually decreases downwards.

3. The prefabricated staircase structure of claim 2, wherein: the inner diameter of the upper end of the preformed hole is 60mm, and the inner diameter of the lower end of the preformed hole is 50 mm.

4. The prefabricated staircase structure of any of claims 1 to 3, wherein: two pairs of preformed hole reinforcing ribs arranged in different heights are embedded in the height direction of each preformed hole.

5. The prefabricated staircase structure of claim 1, wherein: two hanging nail reinforcing ribs a are arranged in the ladder section plate corresponding to one hanging nail, and the distance between the two hanging nail reinforcing ribs a is matched with the width of the hanging nail and is smaller than the width of the nail head of the hanging nail.

6. The prefabricated staircase structure of claim 5, wherein: the middle part of the hanging nail reinforcing rib is a right-angle reinforcing bar, and the two right-angle ends are connected with reinforcing bars with the same inclination angle with the bench boards.

7. The prefabricated staircase structure of claim 6, wherein: and the right-angle end corresponding to the hanging nail reinforcing rib a penetrates through a hanging nail reinforcing rib b along the width direction of the stairs.

8. The prefabricated staircase structure of claim 1, wherein: and two anti-slip grooves extending in the width direction of the stairs are formed in the outward edge of the stair flight plate.

9. The prefabricated staircase structure of claim 8, wherein: the distance between the two anti-skid grooves is preferably 30mm, and the anti-skid grooves are preferably trapezoidal grooves.

10. The prefabricated staircase structure of claim 1, wherein: the back of the ladder section plate is provided with an inclined water dripping trough along the back of the ladder section plate.