CN210597920U

CN210597920U - Prefabricated staircase

Info

Publication number: CN210597920U
Application number: CN201921241237.3U
Authority: CN
Inventors: 郑建良; 叶晓军
Original assignee: Zhejiang Jiuyang Concrete Building Components Co Ltd
Current assignee: Zhejiang Jiuyang Concrete Building Components Co Ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-05-22
Anticipated expiration: 2029-08-02

Abstract

The utility model discloses a prefabricated staircase, which comprises a main body with a tread, wherein two ends of the main body are provided with support edges connected with floors; the main body is internally provided with longitudinal inner steel bars which are distributed on rectangular edges, the outer peripheries of the inner steel bars are surrounded by stirrup bars which are transversely arranged, and the outer peripheries of the stirrup bars are provided with longitudinally distributed outer steel bars; the outer steel bars are also connected with bearing steel bars for supporting the tread; auxiliary steel bars are transversely distributed in the support edge, and auxiliary steel hoops are surrounded outside the auxiliary steel bars; the support edge is provided with a pin key reserved hole, and a reinforcing rib is arranged at the pin key reserved hole. The utility model has the characteristics of structural strength is high, can satisfy high specification requirement and install in formal building. Furthermore, the utility model discloses an antiskid groove is clean convenient relatively.

Description

Prefabricated staircase

Technical Field

The utility model relates to a prefabricated staircase.

Background

With the improvement of living standard, the housing demand of people is increasingly vigorous. Most of the existing civil houses are of reinforced concrete structures, and the basic principle is that a reinforced frame is firstly woven, and then concrete is poured outside the reinforced frame. Theoretically, the parts such as stairs and balconies can be prefabricated and then combined with the steel bars of the floor layer for installation, so that the building speed of the house is increased. However, most of the existing prefabricated staircases are formed by weaving rectangular cage-shaped reinforcing steel frames only on the main body part, and the stress condition of the existing prefabricated staircases is not ideal due to lack of support for treads. Therefore, the prefabricated staircase is mostly used as a temporary building staircase and is rarely used as a formal building staircase.

On the other hand, most of the existing anti-skid grooves for the stairs are rectangular grooves, and although the structure is simple to produce, sundries falling into the grooves are difficult to clean.

Therefore, the existing prefabricated staircase has the problems that the structural strength is relatively low, the requirement of high specification is difficult to meet, and the anti-skidding groove is difficult to clean.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prefabricated staircase. The utility model has the characteristics of structural strength is high, can satisfy high specification requirement and install in formal building. Furthermore, the utility model discloses an antiskid groove is clean convenient relatively.

The technical scheme of the utility model: a prefabricated staircase comprises a main body with a tread, wherein two ends of the main body are provided with support edges connected with floors; the main body is internally provided with longitudinal inner steel bars which are distributed on rectangular edges, the outer peripheries of the inner steel bars are surrounded by stirrup bars which are transversely arranged, and the outer peripheries of the stirrup bars are provided with longitudinally distributed outer steel bars; the outer steel bars are also connected with bearing steel bars for supporting the tread; auxiliary steel bars are transversely distributed in the support edge, and auxiliary steel hoops are surrounded outside the auxiliary steel bars; the support edge is provided with a pin key reserved hole, and a reinforcing rib is arranged at the pin key reserved hole.

In the prefabricated staircase, the bearing reinforcing steel bars comprise right angle bodies, fixing parts connected with the outer reinforcing steel bars are arranged at two ends of the right angle bodies, and the fixing parts face the outer sides of the right angle bodies. The structure enables the fixing part to be bound on the external steel bar, so that the operation space is larger and more convenient.

In the aforesaid prefabricated staircase, the strengthening rib is the U-shaped pin key and surrounds the hole of reserving, and the opening of U-shaped is towards the main part, and the strengthening rib is arranged on the radial face in hole is reserved to the pin key. The reinforcing rib structure can lead the stress of the hole to one side of the main body instead of the other side with relatively thin wall thickness, thereby optimizing the stress and improving the structural strength.

In the prefabricated staircase, the tread is provided with the anti-skid groove with the cross section being triangular, the transverse inner wall of the anti-skid groove is a passenger-facing surface back to the main body and a passenger-sending surface facing the main body, and the inclination angle of the passenger-facing surface is larger than that of the passenger-sending surface.

In the prefabricated staircase, the inner wall of the anti-slip groove is provided with the fluorescent coating.

In the prefabricated staircase, the hoop reinforcement is composed of two U-shaped hoop bodies.

In the prefabricated staircase, a round head hanging nail is arranged in the main body.

Compared with the prior art, the utility model discloses a main part with hold in the palm along the all built-in rectangle steel reinforcement cage of part, and both are longitudinal arrangement and transverse arrangement respectively, and this kind of steel bar structure after optimizing can effectively promote holistic structural strength. Meanwhile, the tread with the bearing reinforcing steel bars is a strong structure point, and the tread on the whole main body is divided into a plurality of weak structure sections, so that the problems that the whole tread is a weak structure section and the stress condition is not ideal due to no reinforcing steel bar support on all treads are solved. Moreover, the pin key reserved hole is provided with a reinforcing rib structure, so that the structural strength of the hole body is guaranteed, and the connection strength between the supporting edge and the external floor plate is further guaranteed.

Furthermore, the cross section of the anti-skid groove of the utility model is triangular, the angle of the passenger plane is smaller, and the structure conforms to the cleaning direction, so that the dirt in the groove can be smoothly swept out. More importantly, after the fluorescent coating is coated, the angle difference between the passenger-facing surface and the passenger-sending surface corresponds to the difference of visual angles when a user goes up and down stairs, so that the projection area of the two surfaces facing the user is large, and the reminding effect is good.

To sum up, the utility model has the characteristics of structural strength is high, can satisfy high specification requirement and install in formal building. Furthermore, the utility model discloses an antiskid groove is clean convenient relatively.

Drawings

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

fig. 2 is a top view of the present invention;

fig. 3 is an internal schematic view of the present invention;

FIG. 4 is a schematic cross-sectional view taken at A-A of FIG. 3;

FIG. 5 is a schematic view of the construction of the cleat grooves;

fig. 6 is a schematic view of the structure of the reinforcing bar.

Reference numerals: 10-main body, 11-tread, 12-internal reinforcement, 13-hoop reinforcement, 14-external reinforcement, 15-bearing reinforcement, 16-passenger-meeting face, 17-passenger-sending face, 18-round-head hanging nail, 20-support edge, 21-auxiliary reinforcement, 22-auxiliary hoop, 23-pin key reserved hole and 24-reinforcing rib.

Detailed Description

The present invention will be further described with reference to the following examples, which are not intended as a limitation to the present invention.

Example (b): a prefabricated staircase comprises a main body 10 with a tread 11, support edges 20 connected with floors are arranged at two ends of the main body 10, and rectangular reinforcement cages are arranged in the main body 10 and the support edges 20.

Specifically, be equipped with fore-and-aft interior reinforcement 12 in the main part 10, interior reinforcement 12 distributes on the rectangle edge, and interior reinforcement 12 is outer to be enclosed there is stirrup 13, and stirrup 13 transversely sets up, and stirrup 13 is equipped with longitudinal distribution's outer reinforcing bar 14 outward. The outer steel bars 14 are further connected with bearing steel bars 15 supporting the tread 11, each bearing steel bar 15 comprises a right-angle body, fixing portions connected with the outer steel bars 14 are arranged at two ends of the right-angle body, and the fixing portions face the outer side of the right-angle body. The hoop reinforcement 13 is composed of two U-shaped hoop bodies. A round head hanging nail 18 is also arranged in the main body 10.

Auxiliary reinforcing steel bars 21 are transversely distributed in the support edge 20, and auxiliary steel hoops 22 are surrounded outside the auxiliary reinforcing steel bars 21; the support is equipped with pin key reserved hole 23 on the 20, and pin key reserved hole 23 department is equipped with strengthening rib 24, and strengthening rib 24 is U-shaped and surrounds pin key reserved hole 23, and the opening of U-shaped is towards main part 10, and strengthening rib 24 arranges on the radial face in pin key reserved hole 23.

The tread 11 is provided with a transverse anti-skid groove with a triangular cross section, the transverse inner wall of the anti-skid groove is a passenger receiving surface 16 facing away from the main body 10 and a passenger conveying surface 17 facing towards the main body 10, and the inclination angle of the passenger receiving surface 16 is larger than that of the passenger conveying surface 17. In the present embodiment, the angle of the incoming surface 16 is 53 degrees, and the angle of the outgoing surface 17 is 30 degrees. The inner wall of the anti-slip groove is provided with a fluorescent coating.

The utility model discloses an at the interior prefabricated molding of mill, then transport on-the-spot hoist and mount. After the hoisting is finished, the supporting edge 20 is arranged on the floor plate, and the positioning and the fixing are realized through the pin key preformed hole.

The utility model discloses a main part 10 parts with hold in the palm along 20 parts all embeds rectangle steel reinforcement cages, and both are longitudinal arrangement and transverse arrangement respectively, and this kind of steel bar structure after optimizing can effectively promote holistic structural strength. Meanwhile, the tread 11 with the bearing reinforcing steel bars 15 is a strong structure point, and the tread 11 on the whole main body 10 is divided into a plurality of weak structure sections, so that the problem that the whole tread 11 is a weak structure section due to the fact that all the treads 11 are not provided with reinforcing steel bar supports, and the stress condition is not ideal is solved. Moreover, the pin key reserved hole 23 is provided with a reinforcing rib 24 structure, so that the structural strength of the hole body is ensured, and the connection strength of the support edge 20 and an external floor plate is further ensured.

The section of the antiskid groove is triangular, the angle of the passenger conveying surface 17 is smaller, and the structure conforms to the cleaning direction, so that the dirt in the groove can be smoothly cleaned. More importantly, after the fluorescent coating is coated, the angle difference between the passenger receiving surface 16 and the passenger sending surface 17 corresponds to the difference of visual angles when a user goes up and down stairs, so that the projection area of the two surfaces facing the user is large, and the reminding effect is good.

Claims

1. A prefabricated staircase, its characterized in that: comprises a main body (10) with a tread (11), wherein two ends of the main body (10) are provided with support edges (20) connected with floors; longitudinal inner steel bars (12) are arranged in the main body (10), the inner steel bars (12) are distributed on the rectangular edges, hoop steel bars (13) are surrounded outside the inner steel bars (12), the hoop steel bars (13) are transversely arranged, and longitudinally distributed outer steel bars (14) are arranged outside the hoop steel bars (13); the outer steel bars (14) are also connected with bearing steel bars (15) supporting the tread (11); auxiliary reinforcing steel bars (21) are transversely distributed in the support edge (20), and auxiliary steel hoops (22) are surrounded on the auxiliary reinforcing steel bars (21); the support edge (20) is provided with a pin key reserved hole (23), and a reinforcing rib (24) is arranged at the pin key reserved hole (23).

2. A prefabricated staircase according to claim 1, characterized in that: the bearing reinforcing steel bar (15) comprises a right angle body, fixing parts connected with the outer reinforcing steel bar (14) are arranged at two ends of the right angle body, and the fixing parts face the outer side of the right angle body.

3. A prefabricated staircase according to claim 1, characterized in that: the reinforcing ribs (24) surround the pin key reserved holes (23) in a U shape, the openings of the U shape face the main body (10), and the reinforcing ribs (24) are arranged on the radial surfaces of the pin key reserved holes (23).

4. A prefabricated staircase according to claim 1, characterized in that: the anti-skidding mechanism is characterized in that the tread (11) is provided with a transverse anti-skidding groove with a triangular cross section, the transverse inner wall of the anti-skidding groove is a passenger receiving surface (16) back to the main body (10) and a passenger conveying surface (17) facing the main body (10), and the inclination angle of the passenger receiving surface (16) is larger than that of the passenger conveying surface (17).

5. A prefabricated staircase according to claim 4, characterized in that: and the inner wall of the anti-slip groove is provided with a fluorescent coating.

6. A prefabricated staircase according to claim 1, characterized in that: the hoop reinforcement (13) is composed of two U-shaped hoop bodies.

7. A prefabricated staircase according to claim 1, characterized in that: a round head hanging nail (18) is arranged in the main body (10).