CN211229245U

CN211229245U - Prestress assembled stair

Info

Publication number: CN211229245U
Application number: CN201921862874.2U
Authority: CN
Inventors: 郑立国; 付家宝; 李留正; 郭明
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-08-11
Anticipated expiration: 2029-11-01

Abstract

The utility model belongs to the technical field of assembled building stairs, in particular to a prestressed assembled stair, which comprises a stair beam and a plurality of stair tread plates fixedly connected with the stair beam in a screwed manner, wherein stair beam prestressed ribs are prefabricated in the stair beam, and stair tread plate prestressed ribs are prefabricated in the stair tread plates; the utility model discloses in with prestressing force assembled stair, disassemble into a plurality of standard parts, including prestressing force stair beam, prestressing force trapezoidal cross-section stair board, stainless steel screw rod (standard part), because stair beam, stair tread all are prestressing force spare, bear the weight of the little and size of high amount of deflection also exquisite, weight is also light certainly, post-tensioned prestressing force stair beam, prefabricated stair beam template can the segmentation general, splice according to length, factor of safety is high, production convenient and fast more, can practice thrift a large amount of moulds and commonality height, water and smash, the maintenance, shift, the transportation, hoist and mount are all convenient, the damaged can also be changed of stair tread, it is easy to restore.

Description

Prestress assembled stair

Technical Field

The utility model belongs to the technical field of stair for the assembly type structure, concretely relates to prestressing force assembled stair.

Background

The buildings assembled by prefabricated parts on the construction site are called as assembly buildings, and are divided into five types, namely block buildings, plate buildings, box buildings, framework plate buildings, riser buildings and the like according to the forms and construction methods of prefabricated parts, and the early assembly buildings are relatively stiff and discordant in appearance. Later improvements in design have resulted in increased flexibility and versatility to allow modular construction not only in batch, but also in a wide variety of styles. The movable dwelling house is an advanced assembly type building in America, each dwelling unit is like a large trailer, and the movable dwelling house can be used only by pulling the movable dwelling house to the site by a special automobile and then hoisting the movable dwelling house to a floor cushion block by a crane to be connected with a pre-buried water channel, a power supply and a telephone system. The movable dwelling house is internally provided with facilities such as a heating system, a bathroom, a kitchen, a dining room, a bedroom and the like. The movable dwelling houses can be formed into a unit independently and can also be connected with each other, and the assembly type building also comprises an assembly type stair.

Most of the original single stair flights are more than two tons, even more than three and four tons, the prefabrication, the movement, the transportation and the hoisting are inconvenient, the equipment more than the middle-sized equipment is needed, meanwhile, if a problem occurs in a certain link, the loss is just one stair flight, the loss is large, the weight is heavy, the volume is large, the rapid maintenance is inconvenient, the requirement on a carrying tool is high, in addition, the mold is difficult to be universal, one stair flight is large, the mold is waste, the mold manufacturing process time is long, and the cost is high.

Accordingly, a person skilled in the art provides a pre-stressed fabricated stairway to solve the problems set forth in the background art described above.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a prestressing force assembled stair has the characteristics that hoist and mount are light and the installation is nimble.

In order to achieve the above object, the utility model provides a following technical scheme: prestressing force assembled stair, including stair beam and with a plurality of stair step board that stair beam spiro union is fixed, stair beam's inside is prefabricated has stair beam prestressing tendons, stair step board's inside is prefabricated has stair step board prestressing tendons.

Preferably, the two ends of the interior of the stair beam are provided with prestressed rib holes which are communicated with each other, and the diameter of each prestressed rib hole is matched with the diameter of each prestressed rib of the stair beam (equal).

Preferably, stair step plate prestressing tendons is the right trapezoid structure, stair step plate prestressing tendons's quantity is three, and is three stair step plate prestressing tendons is triangle symmetric distribution and is in stair step plate's three corner.

Preferably, two bolt holes which are symmetrically distributed are formed in the stair tread plate, a bolt containing cavity communicated with the bolt holes is formed in the stair tread plate, and the bolt holes and the bolt containing cavity are both of rectangular structures.

Preferably, the top of the stair beam is provided with a plurality of sleeves which are distributed at equal intervals, the sleeves are matched with the bolt containing cavities, and the bolt holes, the bolt containing cavities and the sleeves are fixed through connecting pieces in a threaded connection mode.

Preferably, the connecting piece which penetrates through the bolt hole, the bolt containing cavity and the sleeve and is fixedly connected with the bolt hole, the bolt containing cavity and the sleeve in a threaded manner is a stainless steel screw.

Compared with the prior art, the beneficial effects of the utility model are that: the prestressed assembly type stair of the utility model is disassembled into a plurality of standard parts, including prestressed stair beams, prestressed trapezoidal sections and stainless steel screws (standard parts), because the stair beams and stair tread plates are all prestressed parts, the bearing high deflection is small, the size is exquisite, the weight is light, the stair beams are manufactured by post-tensioning prestressing, the templates can be segmented and used universally, the splicing is carried out according to the length, the reinforcing steel bar flange sleeve for fixing the stair tread plates is embedded according to the design specification and the position size, the post-tensioning prestressing is carried out after the stair beams are prefabricated, the quality is high, the construction is simple, the installation is convenient, the durability is good, the disassembly and the replacement are realized, the requirement on hoisting machines is low, the safety coefficient is high, the production is more convenient and rapid, a large number of molds can be saved, the universality is high, the pouring, the maintenance, the transfer, the transportation and the hoisting are convenient, the stair tread plates can be damaged and replaced, the repair is easy.

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 structural view of the present invention;

FIG. 2 is a schematic side view of the three-dimensional structure of the present invention;

FIG. 3 is a schematic top view of the stair girders of the present invention;

fig. 4 is a schematic side view of the cross-sectional structure of the present invention;

FIG. 5 is a schematic view of the stair tread of the present invention;

fig. 6 is a schematic view of the cross-sectional structure of the stair tread of the present invention.

In the figure: 1. a stair stringer; 11. prestressed ribs of the stair beam; 101. pre-stress rib holes; 102. a sleeve; 2. stair tread plates; 21. prestressed ribs of a stair tread; 201. bolt holes; 202. the bolt holds the chamber.

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. 1-6, the present invention provides the following technical solutions: prestressing force assembled stair, including stair beam 1 and with a plurality of stair step board 2 that stair beam 1 spiro union is fixed, stair beam 1's inside is prefabricated has stair beam prestressing tendons 11, stair step board 2's inside is prefabricated has stair step board prestressing tendons 21.

In this embodiment: the stair beam 1 and a plurality of stair tread plates 2 which are fixedly connected with the stair beam 1 in a threaded manner, the stair beam prestressed ribs 11 are prefabricated in the stair beam 1, the stair tread plate prestressed ribs 21 are prefabricated in the stair tread plates 2, the prestressed assembly type stair is disassembled into a plurality of standard parts comprising the prestressed stair beam 1 and prestressed trapezoidal sections, because the stair beam 1 and the stair tread 2 are all prestressed pieces, the stair beam has small bearing deflection, exquisite size and light weight, the post-tensioned prestressed stair beam 1 and the template can be commonly used by sections, the construction is simple, the installation is convenient, the durability is good, can dismantle the change, hoist and mount machines require lowly, and factor of safety is high, and production convenient and fast more can practice thrift a large amount of moulds and the commonality is high, waters and smashes, maintenance, shift, transportation, hoist and mount all convenient, and stair tread board 2 damage can also be changed, and it is easy to restore.

In fig. 1-3: the prestressed reinforcement hole 101 that link up each other is seted up at the inside both ends of stair roof beam 1, and the diameter of prestressed reinforcement hole 101 matches with the diameter of stair roof beam prestressed reinforcement 11 (etc.), adopts the prestressing force spare, bears the weight of the little and size of high amount of deflection and also exquisite, and the weight is also light, and the construction is simple, simple to operate, durability are good, can dismantle the change, and hoist and mount machines require lowly, and factor of safety is high, produces convenient and fast more.

In fig. 4: the top of stair beam 1 has the sleeve 102 that a plurality of equidistance distributes, sleeve 102 and bolt hold chamber 202 phase-match, bolt hole 201, bolt hold chamber 202 and sleeve 102 pass through the connecting piece spiro union fixed, run through bolt hole 201, bolt hold chamber 202 and sleeve 102 and with bolt hole 201, the connecting piece that bolt hold chamber 202 and sleeve 102 spiro union are the stainless steel screw rod, adopt stainless steel screw rod connecting bolt hole 201, bolt hold chamber 202 and sleeve 102, thereby link together stair beam 1 and stair tread 2, high durability and convenient installation, the dismouting is simple.

In fig. 5: stair step board prestressing tendons 21 is the right trapezoid structure, and stair step board prestressing tendons 21's quantity is three, and three stair step board prestressing tendons 21 are triangle symmetric distribution at the three corner of stair step board 2, sets up two symmetric distribution's bolt hole 201 on the stair step board 2 for increase stair step board 2's bulk strength, and light in weight is convenient for maintain the change.

In fig. 6: the inside of stair tread 2 has the bolt appearance chamber 202 that link up mutually with bolt hole 201, and bolt hole 201, bolt appearance chamber 202 are the rectangle structure, with outside square bolt fastening in bolt hole 201, together with sleeve 102 spiro union fixed connection, accomplish the installation between stair beam 1 and the stair tread 2 fixed to accomplish the installation of assembled stair and fix.

The utility model discloses a theory of operation and use flow: hoist the stair beam 1 to suitable position with the help of external equipment earlier, carry out the angular adjustment of stair beam 1, hoist stair tread 2 again, adjust the hoist and mount size of stair tread 2, put stair beam 1 of two symmetrical installations with stair tread 2, arrange in proper order on stair beam 1 with a plurality of sleeve 102 is corresponding, fasten outside square bolt in bolt hole 201 at last, with sleeve 102 spiro union fixed connection together, accomplish the installation between stair beam 1 and stair tread 2 and fix, thereby accomplish the installation of assembled stair and fix.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Prestressing force assembled stair, its characterized in that: the stair tread structure is characterized by comprising a stair beam (1) and a plurality of stair tread plates (2) fixed to the stair beam (1) in a threaded mode, stair beam prestressed ribs (11) are prefabricated in the stair beam (1), and stair tread plate prestressed ribs (21) are prefabricated in the stair tread plates (2).

2. The pre-stressed assembled stair of claim 1, wherein: the inner two ends of the stair beam (1) are provided with prestressed rib holes (101) which are communicated with each other, and the diameter of each prestressed rib hole (101) is equal to that of the stair beam prestressed rib (11).

3. The pre-stressed assembled stair of claim 1, wherein: stair step board prestressing tendons (21) are the right trapezoid structure, the quantity of stair step board prestressing tendons (21) is three, and is three stair step board prestressing tendons (21) are triangle symmetric distribution and are in the three corner of stair step board (2).

4. The pre-stressed assembled stair of claim 1, wherein: two bolt holes (201) which are symmetrically distributed are formed in the stair tread plate (2), a bolt containing cavity (202) which is communicated with the bolt holes (201) is formed in the stair tread plate (2), and the bolt holes (201) and the bolt containing cavity (202) are both of rectangular structures.

5. The pre-stressed assembled stair of claim 4, wherein: the top of the stair beam (1) is provided with a plurality of sleeves (102) which are distributed at equal intervals, the sleeves (102) are matched with the bolt accommodating cavities (202), and the bolt holes (201), the bolt accommodating cavities (202) and the sleeves (102) are fixed through connecting pieces in a threaded mode.

6. The pre-stressed assembled stair of claim 5, wherein: the connecting piece which penetrates through the bolt hole (201), the bolt containing cavity (202) and the sleeve (102) and is fixedly connected with the bolt hole (201), the bolt containing cavity (202) and the sleeve (102) in a threaded mode is a stainless steel screw rod.