CN213038711U

CN213038711U - Prefabricated reinforced concrete slab type stairs

Info

Publication number: CN213038711U
Application number: CN202020843298.3U
Authority: CN
Inventors: 岳彦杰; 孙世枭
Original assignee: Hebei Tong Tong Thermal Insulation Material Co ltd
Current assignee: Hebei Tong Tong Thermal Insulation Material Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-04-23
Anticipated expiration: 2030-05-19

Abstract

The utility model relates to the technical field of building structures, in particular to a prefabricated reinforced concrete slab stair, which is arranged between two adjacent floors and comprises a stair main body, the stair main body is provided with stair steps, the two ends of the stair main body are respectively provided with an upper step plate and a lower step plate, the upper step plate and the lower step plate are respectively provided with a fixing device, the fixing device comprises a fixing plate and a plurality of groups of locking nuts, the lower step plate of the upper step plate is provided with a rectangular through hole which is communicated with the front and the back, the bottom ends of the upper step plate and the lower step plate are respectively provided with a plurality of groups of first through holes communicated with the rectangular through hole, the top ends of the upper step plate and the lower step plate are respectively provided with a plurality of groups of second through holes communicated with the rectangular through hole, the fixing plate is positioned in the rectangular through hole and is provided with a strip-shaped hole in the front and back direction on the, the convenience is consolidated, is pour the both ends of stair component, alleviates work load, improves the stair component.

Description

Prefabricated reinforced concrete slab type stairs

Technical Field

The utility model relates to a building structure's technical field especially relates to a prefabricated reinforced concrete slab stair.

Background

As is known, the complicated problem of cast-in-place stair formwork erecting process has been solved to prefabricated reinforced concrete slab stair, the construction degree of difficulty has been reduced simultaneously, hoist and mount are convenient, extensively adopt in the building work progress, but current prefabricated reinforced concrete slab stair still has some problems, current prefabricated reinforced concrete slab stair has saved the technology of making the mould of whole stair, but the both ends of stair component still need consolidate the stair component when carrying out the fixing, formwork erecting, pour, work load is great, the fastness of stair component is relatively poor.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a convenience consolidate, pour the both ends of stair component, alleviate work load, improve the fastness of stair component and get prefabricated reinforced concrete slab stair.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a prefabricated reinforced concrete slab stair is installed between two adjacent floors and comprises a stair main body, stair steps are arranged on the stair main body, an upper step plate and a lower step plate are arranged at two ends of the stair main body respectively, fixing devices are arranged at the upper step plate and the lower step plate respectively and comprise fixing plates and a plurality of groups of locking nuts, rectangular through holes which are communicated with the rectangular through holes are formed in the lower step plate of the upper step plate, a plurality of groups of first through holes communicated with the rectangular through holes are formed in the bottom ends of the upper step plate and the lower step plate respectively, a plurality of groups of second through holes communicated with the rectangular through holes are formed in the top ends of the upper step plate and the lower step plate respectively, the fixing plates are located in the rectangular through holes and are provided with strip-shaped holes in the front and back directions, a plurality of groups of fixing screws are arranged at the top ends of the floors, the top ends of the plurality of groups of fixing screws respectively penetrate through the plurality of groups of first through holes and extend into the, the multiple groups of locking nuts are respectively in threaded connection with the multiple groups of fixing screw rods, and the multiple groups of locking nuts are located in the rectangular through holes.

Preferably, the top of floor is provided with places the breach, multiunit clamping screw all is located places breach department, go up step board and step board down and all place the breach department of placing at the floor.

Preferably, the top ends of the upper step plate and the lower step plate are positioned on the same horizontal plane with the top end of the floor.

Preferably, the first through hole and the second through hole are both strip-shaped structures.

Preferably, the stair main body is provided with a first drainage hole in the vertical direction and a second drainage hole in the front-back direction, and the bottom end of the first drainage hole is communicated with the second drainage hole.

Preferably, the outer side of the top end of one part of the stair steps is provided with a handrail mounting groove, the top end of the other part of the stair steps is provided with handrail mounting holes, and the handrail mounting groove and the handrail mounting holes are alternately arranged.

Preferably, the outer side of the top end of the stair step is provided with a water retaining edge, the top end of the stair step is provided with an anti-slip strip, and the outer side of the bottom end of the stair main body is provided with a water dripping line.

Preferably, the water retaining edge, the water dripping line and the anti-slip strip are integrally cast and formed with the stair main body.

(III) advantageous effects

Compared with the prior art, the utility model provides a prefabricated reinforced concrete slab stair possesses following beneficial effect: this prefabricated reinforced concrete slab stair, hoist and mount the stair body between two floors, it places floor department with step board down to make, prevent the fixed plate in advance in the rectangle through-hole, the clamping screw of floor department stretches into the bar hole that passes the fixed plate in the rectangle through-hole through first through-hole, put into the rectangle through-hole with lock nut from the second through-hole and pass through threaded connection with clamping screw, make the fixed plate compress tightly the stair main part after screwing up lock nut, tentatively fix the stair main part, conveniently consolidate the both ends of stair component, pour, reduce work load, then pour the concrete through the second through-hole toward the rectangle through-hole in, make concrete and fixed plate be even as an organic whole, improve the fastness of stair component.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic diagram of the explosion structure of the present invention;

fig. 3 is a schematic view of the structure of fig. 2 from another angle according to the present invention;

in the drawings, the reference numbers: 1. a floor; 2. a stair body; 3. stair stepping; 4. an upper step plate; 5. a step plate is arranged at the lower part; 6. a fixing plate; 7. locking the nut; 8. a rectangular through hole; 9. a first through hole; 10. a second through hole; 11. a strip-shaped hole; 12. fixing the screw rod; 13. a notch; 14. a first hydrophobic pore; 15. an armrest mounting groove; 16. a handrail mounting hole; 17. a water retaining edge; 18. dripping lines; 19. anti-slip strips; 20. a second hydrophobic pore.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the prefabricated reinforced concrete slab stair of the present invention is installed between two adjacent floors 1, and includes a stair main body 2, a stair step 3 is disposed on the stair main body 2, an upper tread plate 4 and a lower tread plate 5 are respectively disposed at two ends of the stair main body 2, fixing devices are disposed at the upper tread plate 4 and the lower tread plate 5, each fixing device includes a fixing plate 6 and a plurality of sets of locking nuts 7, rectangular through holes 8 are disposed at the lower tread plate 5 of the upper tread plate 4, the lower tread plate 5 and the upper tread plate 4 are respectively provided with a plurality of sets of first through holes 9 communicating with the rectangular through holes 8, the top ends of the upper tread plate 4 and the lower tread plate 5 are respectively provided with a plurality of sets of second through holes 10 communicating with the rectangular through holes 8, the fixing plate 6 is disposed in the rectangular through holes 8, and a strip-shaped hole 11 is disposed on the fixing plate 6 in the front and rear direction, the top end of the floor 1 is provided with a plurality of groups of fixing screws 12, the top ends of the plurality of groups of fixing screws 12 respectively penetrate through a plurality of groups of first through holes 9 and extend into the rectangular through holes 8 and penetrate through the strip-shaped holes 11, a plurality of groups of locking nuts are respectively in threaded connection with the plurality of groups of fixing screws 12, the plurality of groups of locking nuts are all located in the rectangular through holes 8, the top end of the floor 1 is provided with a placing notch 13, the plurality of groups of fixing screws 12 are all located at the placing notch 13, the upper stepping plate 4 and the lower stepping plate 5 are both placed at the placing notch 13 of the floor 1, effective connection of the upper stepping plate 4 and the lower stepping plate 5 with the floor 1 is guaranteed, and the top ends of the upper stepping plate 4 and the lower stepping plate 5 and the top end of the floor 1; hoist the stair body between two floors 1, it places in floor 1 department to make go up flier 4 and lower flier 5, prevent in advance fixed plate 6 in rectangle through-hole 8, fixing screw 12 of floor 1 department stretches into in rectangle through-hole 8 and passes the bar hole 11 of fixed plate 6 through first through-hole 9, put into rectangle through-hole 8 and pass through threaded connection with fixing screw 12 with lock nut from second through-hole 10, make fixed plate 6 compress tightly stair main part 2 after screwing up lock nut, preliminarily fix stair main part 2, conveniently consolidate the both ends of stair component, alleviate work load, then pour concrete toward rectangle through-hole 8 through second through-hole 10, make concrete and fixed plate 6 even as an organic whole, improve the fastness of stair component.

First through-hole 9 and second through-hole 10 are bar structures, and bar structures's first through-hole 9 and second through-hole 10 can carry out the front and back regulation location to stair main part 2.

The second hydrophobic hole 20 of the first hydrophobic hole 14 fore-and-aft direction that is provided with vertical direction on stair main body 2, the bottom of first hydrophobic hole 14 and the intercommunication of the hydrophobic hole 20 of second, the water on the stair tread flows into the hydrophobic hole 20 of second and flows along the outside of the hydrophobic hole 20 of second through first hydrophobic hole 14 for the water discharge on stair step 3 is favorable to protecting whole stair main body 2, partly the top outside of stair step 3 is provided with handrail mounting groove 15, another part the top of stair step 3 is provided with handrail mounting hole 16, handrail mounting groove 15 sets up with handrail mounting hole 16 in turn, the handrail of easy to assemble.

The outer side of the top end of the stair step 3 is provided with a water retaining edge 17, the top end of the stair step 3 is provided with an anti-slip strip 19, the outer side of the bottom end of the stair main body 2 is provided with a water dripping line 18, water is dripped through the water dripping line 18, and water is prevented from flowing on the bottom surface of the stair main body 2.

The water retaining edge 17, the water dripping line 18 and the anti-slip strip 19 are integrally cast and formed with the stair main body 2, the problem that a formwork supporting process of a cast-in-place stair is complex is solved, meanwhile, the construction difficulty is reduced, and the construction links that a stair and a shear wall are supported and poured and tamped most difficultly are avoided.

When the stair is used, the stair body is hoisted between two floors 1, the upper step plate 4 and the lower step plate 5 are placed at the floors 1, the fixing plate 6 is prevented from being arranged in the rectangular through hole 8 in advance, the fixing screw 12 at the floors 1 extends into the rectangular through hole 8 through the first through hole 9 and penetrates through the strip-shaped hole 11 of the fixing plate 6, the locking nut is placed into the rectangular through hole 8 from the second through hole 10 and is in threaded connection with the fixing screw 12, the fixing plate 6 compresses the stair main body 2 after the locking nut is screwed down, the stair main body 2 is preliminarily fixed, two ends of the stair component are conveniently reinforced and poured, the workload is reduced, then concrete is poured into the rectangular through hole 8 through the second through hole 10, the concrete and the stair fixing plate 6 are connected into a whole, the firmness of the stair component is improved, water on the stair flows into the second hydrophobic hole 20 through the first hydrophobic hole 14 and flows out along the outer side of the second hydrophobic hole 20, the water draining device is used for draining water on the stair steps 3, is beneficial to protecting the whole stair body 2, drips through the dripping line 18, and prevents water from flowing on the bottom surface of the stair body 2.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A prefabricated reinforced concrete slab stair is installed between two adjacent floors (1) and is characterized by comprising a stair main body (2), stair steps (3) are arranged on the stair main body (2), an upper step plate (4) and a lower step plate (5) are respectively arranged at two ends of the stair main body (2), fixing devices are respectively arranged at the upper step plate (4) and the lower step plate (5), each fixing device comprises a fixing plate (6) and a plurality of groups of locking nuts (7), rectangular through holes (8) which are communicated with each other from front to back are respectively arranged at the lower step plate (5) of the upper step plate (4), a plurality of groups of first through holes (9) communicated with the rectangular through holes (8) are respectively arranged at the bottom ends of the upper step plate (4) and the lower step plate (5), a plurality of groups of second through holes (10) communicated with the rectangular through holes (8) are respectively arranged at the top ends of the upper step plate (4) and the lower step plate (5), fixed plate (6) are located rectangle through-hole (8) to be provided with bar hole (11) of fore-and-aft direction on fixed plate (6), the top of floor (1) is provided with multiunit clamping screw (12), the top of multiunit clamping screw (12) is passed first through-hole (9) of multiunit respectively and is stretched into in rectangle through-hole (8) and pass bar hole (11), multiunit lock nut passes through threaded connection with multiunit clamping screw (12) respectively, and multiunit lock nut all is located rectangle through-hole (8).

2. The prefabricated reinforced concrete stair of claim 1, wherein a placement notch (13) is formed in the top end of the floor (1), the plurality of groups of fixing screws (12) are located at the placement notch (13), and the upper step plate (4) and the lower step plate (5) are placed at the placement notch (13) of the floor (1).

3. The prefabricated reinforced concrete stair of claim 2, wherein the top ends of the upper and lower step plates (4, 5) are located on the same horizontal plane as the top end of the storey (1).

4. The prefabricated reinforced concrete stair of claim 3, wherein the first through hole (9) and the second through hole (10) are both of a strip-shaped structure.

5. The prefabricated reinforced concrete stair of claim 4, wherein the stair body (2) is provided with a first water drainage hole (14) in a vertical direction and a second water drainage hole (20) in a front-back direction, and the bottom end of the first water drainage hole (14) is communicated with the second water drainage hole (20).

6. The prefabricated reinforced concrete slab stair of claim 5, wherein a handrail installation groove (15) is formed on the outer side of the top end of one part of the stair steps (3), handrail installation holes (16) are formed on the top end of the other part of the stair steps (3), and the handrail installation groove (15) and the handrail installation holes (16) are alternately arranged.

7. The prefabricated reinforced concrete slab stair of claim 6, wherein a water retaining edge (17) is arranged on the outer side of the top end of the stair step (3), an anti-slip strip (19) is arranged on the top end of the stair step (3), and a water dropping strip (18) is arranged on the outer side of the bottom end of the stair body (2).

8. The prefabricated reinforced concrete slab stair of claim 7, wherein the water retaining rim (17), the water dripping line (18) and the anti-slip strip (19) are all integrally cast with the stair body (2).