CN217480661U

CN217480661U - Prefabricated scissors stair structure

Info

Publication number: CN217480661U
Application number: CN202121701474.0U
Authority: CN
Inventors: 吴伯海; 陈文松; 邱炬
Original assignee: Fujian Hongji Construction Engineering Co ltd
Current assignee: Fujian Hongji Construction Engineering Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-09-23
Anticipated expiration: 2031-07-26

Abstract

The application discloses a prefabricated scissors stair structure, relates to the technical field of stairs, improves the stability problem of a scissors stair passageway structure, which is arranged between two parallel walls and comprises a prefabricated scissor ladder, a cross beam and a prefabricated beam, the cross beam is horizontally arranged and connected with the wall bodies at two sides, the prefabricated scissor ladder comprises an upper prefabricated scissor ladder and a lower prefabricated scissor ladder, the precast beam is connected with the wall bodies at two sides, the precast beam is provided with a lower picking lug and an upper picking lug, the beam picking lug is arranged on the cross beam, one end of the lower prefabricated scissor ladder is arranged on the beam picking lug and connected with the beam picking lug, the other end of the lower prefabricated scissor ladder is arranged on the corresponding lower picking lug and fixedly connected with the lower picking lug, go up prefabricated scissors ladder one end and roof beam and choose the ear to be connected and the other end and the ear of choosing on corresponding is connected, be equipped with on the prefabricated roof beam and supply interconnect's between the prefabricated scissors ladder of two alternately plane. This application can improve the joint strength of precast beam and take passageway structure certainly on the precast beam.

Description

Prefabricated scissors stair structure

Technical Field

The utility model belongs to the technical field of the technique of stair and specifically relates to a prefabricated scissors stair structure is related to.

Background

The stair is an indispensable part in the building, and the scissors stair is widely applied to high-rise buildings. The scissors stair has the advantages that: the scissors stair is higher to the rate of utilization of building area, has set up two stairs in same stairwell, has the function of two evacuation passageways of vertical direction, can alleviate the condition of blocking up of going up and down stairs, can satisfy the requirement of fire control fleeing simultaneously. In addition, prefabricated scissors stair easy to assemble, and prefabricated scissors stair structure's wholeness can be good, and rigidity is big, and the design is nimble to has the antidetonation effect of certain degree.

In view of the above-mentioned related technologies, the applicant finds that some scissor stair structures are independent two stairs, a passage structure between two crossed scissor stairs is lacking, and most scissor stairs with the passage structure have a platform which is usually designed in a suspended manner, and such a passage structure is not stable enough and has room for improvement.

Disclosure of Invention

In order to improve the stability problem of scissors stair passageway structure, this application provides a prefabricated scissors stair structure.

The application provides a prefabricated scissors stair structure adopts following technical scheme:

the utility model provides a prefabricated scissors stair structure sets up between the wall body that the two sides are parallel to each other, including prefabricated scissors ladder, crossbeam and precast beam, the crossbeam level sets up and just with both sides wall connection, prefabricated scissors ladder includes prefabricated scissors ladder and prefabricated scissors ladder down, precast beam and both sides wall connection, be equipped with on the precast beam and choose the ear down and on choose the ear, be equipped with the roof beam on the crossbeam and choose the ear, prefabricated scissors ladder one end sets up on the roof beam is chosen the ear and chooses ear fixed connection and the other end with the roof beam on choosing the ear under corresponding and with choose ear fixed connection down, go up prefabricated scissors ladder one end set up on the roof beam choose the ear and choose the ear with the roof beam to be connected and the other end set up on choosing the ear on corresponding and with on choosing ear fixed connection on corresponding, be equipped with the plane that supplies interconnect between the two alternately prefabricated scissors ladder on the precast beam.

Through adopting above-mentioned technical scheme, can obtain stable in structure and have the precast beam structure of great intensity, the precast beam structure provides support and connection for two prefabricated scissors ladders that intersect promptly, has also formed the passageway structure of two prefabricated scissors ladders that intersect of intercommunication simultaneously, has both strengthened the intensity of prefabricated scissors stair structure and has also conveniently hoisted.

Optionally, all be equipped with installed part and two installed part relative settings on the face that the wall body is relative, precast beam bottom be equipped with two relative installed part complex mounting grooves, the mounting groove runs through one side and the bottom of precast beam, precast beam hoist and mount are placed on the installed part.

Through adopting above-mentioned technical scheme, can make things convenient for the hoist and mount location of precast beam through the cooperation of installed part and mounting groove.

Optionally, a gasket is arranged on the groove surface of the mounting groove perpendicular to the ground.

Through adopting above-mentioned technical scheme, can make the cooperation of installed part and mounting groove inseparabler, improve the stability and the intensity of the two structure.

Optionally, an embedded part which faces upwards vertically is arranged on the mounting part, a connecting hole penetrates through the precast beam in the vertical direction, and when the mounting groove is matched with the mounting part, the embedded part is located in the connecting hole and is fixed by pouring cement into the connecting hole.

Through adopting above-mentioned technical scheme, can make the hoist and mount of precast beam more convenient through the cooperation of built-in fitting and connecting hole, the pouring cement can make the connection between precast beam and the installed part more stable.

Optionally, an installation groove exists between the precast beam and the wall body, a steel bar structure penetrating out of one side of the wall body close to the precast beam is pre-buried on the wall body, and cement is poured into the installation groove to enable the steel bar structure to be connected with the precast beam.

Through adopting above-mentioned technical scheme, can make seamless between precast beam and the wall body, also improve the joint strength between precast beam and the wall body simultaneously.

Optionally, the reinforcing steel structure includes an abutting portion and an extending portion, the abutting portion is located in the wall body and arranged parallel to the wall body, the extending portion extends out of the wall body towards the precast beam along a direction perpendicular to the wall body, and one end of the extending portion, which is close to the precast beam, is bent towards a vertical direction.

Through adopting above-mentioned technical scheme, make things convenient for steel bar structure's pre-buried setting, strengthened the ascending joint strength of shearing direction between precast beam and the wall body simultaneously.

Optionally, it is equipped with vertical ascending built-in fitting to choose on the ear down equally, the one end that the crossbeam was kept away from to prefabricated scissors ladder has the connecting hole along vertical direction to run through down, the built-in fitting is arranged in the connecting hole and in the connecting hole through pouring cement make prefabricated scissors ladder under with choose the ear under and link to each other, prefabricated roof beam one side is equipped with the filling layer that offsets with prefabricated scissors ladder one side down, prefabricated scissors ladder is connected with the prefabricated roof beam down and is formed the step.

Through adopting above-mentioned technical scheme, can make prefabricated scissors ladder down and choose the joint strength between the ear to improve down, the filling layer has filled the joint gap simultaneously, and is more pleasing to the eye, also makes prefabricated scissors ladder down and chooses the connection between the ear more firm down.

Optionally, the upper end of the upper cantilever lug is provided with a positioning groove for the gasket to be arranged, the upper end of the gasket is flush with the upper end of the precast beam, and the upper precast scissor ladder is connected with the precast beam at the position of the gasket.

Through adopting above-mentioned technical scheme, can make things convenient for the installation of gasket on the precast beam, can improve the joint strength between prefabricated scissors ladder and the precast beam simultaneously.

In summary, the present application includes at least one of the following benefits:

1. the prefabricated beam is more firmly connected with the wall body through the matching of the mounting piece and the mounting groove and the connection of the steel bar structure, and meanwhile, the prefabricated beam is more convenient and faster to hoist;

2. the prefabricated beam is provided with a plane for passing through, a passageway structure is formed between two crossed prefabricated scissor ladders, and the integrated design of the prefabricated beam and the passageway enables the construction process of the scissor stairs to be more convenient and faster.

Drawings

FIG. 1 is a schematic structural view of a prefabricated scissor stair structure according to an embodiment of the present application, with one wall omitted;

FIG. 2 is a schematic structural view of a precast beam in the embodiment of the present application;

FIG. 3 is a sectional view of the precast beam and the wall body coupled according to the embodiment of the present application;

FIG. 4 is a sectional view of the embodiment of the present application with the wall omitted;

fig. 5 is a partial cross-sectional view at a position a where the lower prefabricated scissor ladder and the prefabricated beam are connected in the embodiment of the application.

Description of reference numerals: 1. a wall body; 11. a mounting member; 2. prefabricating a scissor ladder; 21. lower prefabricating a scissor ladder; 22. a scissor ladder is prefabricated; 3. a cross beam; 31. picking the ears by the beams; 4. prefabricating a beam; 41. picking the ears downwards; 42. picking up ears; 421. positioning a groove; 43. mounting grooves; 44. a plane; 5. a gasket; 6. embedding parts; 7. connecting holes; 8. a filling layer; 9. a steel bar structure; 91. an abutting portion; 92. an extension portion; 10. and (5) installing an intermediate groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses prefabricated scissors stair structure sets up between two wall bodies 1, and two wall bodies 1 perpendicular to ground just are parallel to each other.

Referring to fig. 1, the prefabricated scissor stair structure includes a prefabricated scissor ladder 2, a cross beam 3, and a prefabricated beam 4. The shear ladder is provided with two wall bodies 1, a cross beam 3 and a prefabricated beam 4 are connected with the two wall bodies 1, and two ends of the prefabricated shear ladder 2 are connected with the cross beam 3 and the prefabricated beam 4 respectively to form the shear ladder.

Referring to fig. 2, the appearance of the precast beam 4 is a cuboid, the precast beam 4 is perpendicular to the two walls 1 and is arranged in the middle of the walls 1, and the precast beams 4 are arranged at equal intervals in the vertical direction.

Referring to fig. 3, only one set of oppositely disposed mounts 11 is shown. The middle part of wall body 1 is equipped with a plurality of installed parts 11 along vertical direction equidistant, and the installed part 11 on two wall bodies 1 sets up relatively, is equipped with built-in fitting 6 on the installed part 11, and the part that exposes of built-in fitting 6 is cylinder and vertical upwards setting.

Referring to fig. 2 and 3, mounting grooves 43 are formed in the two ends, close to the wall body 1, of the bottom of the precast beam 4, connecting holes 7 are formed in the two ends, close to the wall body 1, of the precast beam 4, and the connecting holes 7 penetrate through the precast beam 4 in the vertical direction and are communicated with the mounting grooves 43. And a gasket 5 is arranged on the groove surface, perpendicular to the ground, of the mounting groove 43, and the gasket 5 is connected with the precast beam 4 in an adhesion mode. The mounting groove 43 is adapted to the size and shape of the mounting member 11, and the mounting groove 43 is matched with the mounting member 11. When the mounting member 11 is dropped into the mounting groove 43, three peripheral surfaces of the mounting member 11 are attached to the gasket 5, and the upper end of the mounting member 11 is attached to the groove surface of the mounting groove 43 horizontally. At this time, the exposed portions of the embedment 6 are to be inserted into the attachment holes 7 without the exposed portions of the embedment 6 protruding out of the attachment holes 7. Cement is poured into the connecting hole 7, and the cement surface of the connecting hole 7 filled into the connecting hole 7 is flush with the upper end surface of the precast beam 4.

After the installation between the installation part 11 and the installation groove 43 is completed, an installation inter-groove 10 exists between the precast beam 4 and the wall body 1 in the horizontal direction. The embedded steel bar structure 9 that is provided with in the wall body 1 and steel bar structure 9 wear out the wall body 1 and are close to one side of precast beam 4, and steel bar structure 9 is located the outer size of wall body 1 and installs groove 10 looks adaptation within a definite time. The reinforcing steel bar structure 9 includes an abutting portion 91 and an extending portion 92, the abutting portion 91 is disposed in the wall 1 along the vertical direction, the extending portion 92 extends towards the precast beam 4 along the direction perpendicular to the wall 1 and penetrates through the wall 1, and the extending portion 92 is connected to the abutting portion 91. One end of the extension portion 92 close to the precast beam 4 is bent and vertically upwards, and cement is poured into the installation inter-groove 10 to connect the wall body 1 and the precast beam 4 through the steel bar structure 9.

Referring to fig. 4, the beams 3 are perpendicular to the two walls 1 and are arranged on two sides of the walls 1 in the horizontal direction, the beams 3 on the two sides are opposite in position, the beams 3 are arranged in a plurality at equal intervals in the vertical direction, and a beam picking lug 31 is arranged on one side of each beam 3 close to the precast beam 4.

The precast beams 4 are located at the intersection points of the cross-connecting lines of the four cross beams 3 closest to the precast beams 4.

Prefabricated scissors ladder 2 is connected with prefabricated scissors ladder 22 and two lower prefabricated scissors ladder 21 on two including prefabricated scissors ladder 22 and lower prefabricated scissors ladder 21 on same prefabricated beam 4, and prefabricated scissors ladder 22 and two lower prefabricated scissors ladder 21 are connected with four crossbeams 3 that prefabricated beam 4 is nearest respectively in distance on two.

Referring to fig. 2 and 4, the precast beam 4 is provided with two upper lifting lugs 42 and two lower lifting lugs 41, the upper lifting lugs 42 are arranged at the upper end of the precast beam 4 close to the two sides of the wall 1, the extending directions of the upper lifting lugs 42 are opposite, the lower lifting lugs 41 are arranged at the lower end of the precast beam 4 close to the two sides of the wall 1, the extending directions of the lower lifting lugs 41 are opposite, and the upper lifting lugs 42 and the lower lifting lugs 41 close to the same side of the wall 1 are opposite.

Go up prefabricated scissors ladder 22's one end and the roof beam that corresponds crossbeam 3 and choose ear 31 fixed connection, the one end of prefabricated scissors ladder 21 down is chosen ear 31 fixed connection with the roof beam that corresponds crossbeam 3, and goes up prefabricated scissors ladder 22 and exists the clearance down between prefabricated scissors ladder 21 and the crossbeam 3 on the horizontal direction, and the pouring has filling layer 8 to fill this clearance.

Referring to fig. 4 and 5, the lower cantilever ears 41 are provided with embedded parts 6, and the exposed parts of the embedded parts 6 are cylindrical and vertically arranged upwards. One of prefabricated scissors ladder 21 keeps away from corresponding roof beam and chooses ear 31 is served and has seted up connecting hole 7 down, and prefabricated scissors ladder 21 is seted up and is run through down along vertical direction to connecting hole 7. The lower prefabricated scissor ladder 21 is hinged with the lower picking lug 41, the exposed part of the embedded part 6 is positioned in the connecting hole 7 at the moment, and the exposed part of the embedded part 6 does not extend out of the connecting hole 7. Cement is poured into the connecting hole 7, and the cement surface of the connecting hole 7 filled into the connecting hole 7 is flush with the upper end surface of the lower prefabricated scissor ladder 21. Gaps exist between the lower prefabricated scissor ladder 21 and the prefabricated beam 4 and the horizontal direction after the lower prefabricated scissor ladder 21 is hinged with the lower cantilever ears 41, and the gaps are filled with cement to form a filling layer 8. The upper end surface of the lower prefabricated scissor ladder 21, which is in contact with the prefabricated beam 4, forms a new step with one side surface and the upper end surface of the prefabricated beam 4.

Referring to fig. 1 and 4, the upper end of the upper picking lug 42 is provided with a positioning groove 421 for bonding the gasket 5, and the positioning groove 421 has the same transverse dimension as the upper picking lug 42. After the gasket 5 is bonded, the upper end surface of the gasket 5 is flush with the upper end surface of the upper picking lug 42, and the gasket 5 is attached to the groove surface of the positioning groove 421. One end of the upper prefabricated scissor ladder 22, which is far away from the picking ear 31 of the corresponding beam, is placed on the picking ear 42 and is connected with the picking ear 42 in a sliding manner.

Referring to fig. 2, a plane 44 is arranged between the two upper lifting lugs 42 at the upper end of the precast beam 4, and the size of the plane 44 is suitable for pedestrians to pass in two directions in a direction perpendicular to the wall body 1.

In order to prevent the pedestrian from slipping, a plurality of anti-slip strips perpendicular to the wall 1 can be arranged on the plane 44.

The implementation principle of prefabricated scissors stair structure of the embodiment of the application is as follows:

firstly, set up crossbeam 3 in the both sides of wall body 1 between two wall bodies 1, set up crossbeam 3 along vertical direction equidistant according to the demand, then set up installed part 11 at the intermediate position of wall body 1, hoist precast beam 4 to mounting groove 43 and the cooperation of installed part 11, the connection between precast beam 4 and the wall body 1 is strengthened to the pouring cement. Prefabricated scissors ladder 21 and last prefabricated scissors ladder 22 under hoist and mount at last, prefabricated scissors ladder 21 one end down with correspond the roof beam and choose ear 31 fixed and the other end and choose ear 41 articulated down, go up prefabricated scissors ladder 22 one end and correspond the roof beam and choose ear 31 fixed and the other end and choose ear 42 sliding connection on with, the connection between prefabricated scissors ladder 2 and the precast beam 4 is strengthened to the pouring cement, is equipped with the intensity that prefabricated scissors stair structure is strengthened to filling layer 8.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a prefabricated scissors stair structure, sets up between wall body (1) that two sides are parallel to each other, its characterized in that: comprises a prefabricated scissor ladder (2), a crossbeam (3) and a prefabricated beam (4), the crossbeam (3) is horizontally arranged and is connected with two side walls (1), the prefabricated scissor ladder (2) comprises an upper prefabricated scissor ladder (22) and a lower prefabricated scissor ladder (21), the prefabricated beam (4) is connected with the two side walls (1), the prefabricated beam (4) is provided with a lower cantilever lug (41) and an upper cantilever lug (42), the crossbeam (3) is provided with a beam cantilever lug (31), one end of the lower prefabricated scissor ladder (21) is arranged on the beam cantilever lug (31) and is fixedly connected with the beam cantilever lug (31) and the other end is arranged on the corresponding lower cantilever lug (41) and is fixedly connected with the lower cantilever lug (41), one end of the upper prefabricated scissor ladder (22) is arranged on the beam cantilever lug (31) and is connected with the beam cantilever lug (31) and the other end is arranged on the corresponding upper lug (42) and is fixedly connected with the upper cantilever lug (42), the precast beam (4) is provided with a plane (44) for connecting the two crossed precast scissor ladders (2).

2. A prefabricated scissor stair construction according to claim 1, wherein: all be equipped with on the face that wall body (1) is relative installed part (11) and two installed parts (11) set up relatively, precast beam (4) bottom be equipped with two relative installed part (11) complex mounting groove (43), one side and the bottom of precast beam (4) are run through in mounting groove (43), precast beam (4) hoist and mount are placed on installed part (11).

3. A prefabricated scissor stair construction according to claim 2, wherein: and a gasket (5) is arranged on the groove surface of the mounting groove (43) vertical to the ground.

4. A prefabricated scissor stair construction according to claim 3, wherein: the mounting part (11) is provided with a vertical upward embedded part (6), the precast beam (4) is provided with a connecting hole (7) in a penetrating manner along the vertical direction, and the embedded part (6) is positioned in the connecting hole (7) and fixed by pouring cement into the connecting hole (7) when the mounting groove (43) is matched with the mounting part (11).

5. A prefabricated scissor stair construction according to claim 4, wherein: there is groove (10) between installation between precast beam (4) and wall body (1), pre-buried being provided with on wall body (1) wears out wall body (1) and is close to steel bar structure (9) of precast beam (4) one side, pouring cement makes steel bar structure (9) link to each other with precast beam (4) in groove (10) between installation.

6. A prefabricated scissor stair construction according to claim 5, wherein: the steel bar structure (9) comprises an abutting portion (91) and an extending portion (92), the abutting portion (91) is located in the wall body (1) and is parallel to the wall body (1), the extending portion (92) extends out of the wall body (1) towards the precast beam (4) along the direction perpendicular to the wall body (1), and one end, close to the precast beam (4), of the extending portion (92) is bent towards the vertical direction.

7. A prefabricated scissor stair construction according to claim 1, wherein: it is equipped with vertical ascending built-in fitting (6) on ear (41) to choose down equally, prefabricated scissors ladder (21) is kept away from the one end of crossbeam (3) down and is run through along vertical direction has connecting hole (7), built-in fitting (6) are arranged in connecting hole (7) and in connecting hole (7) make down prefabricated scissors ladder (21) link to each other with ear (41) of choosing down through pouring cement, prefabricated roof beam (4) one side is equipped with filling layer (8) that offsets with prefabricated scissors ladder (21) one side down, prefabricated scissors ladder (21) are connected with prefabricated roof beam (4) down and are formed the step.

8. A prefabricated scissor stair construction according to claim 7, wherein: the upper end of choosing ear (42) on is equipped with constant head tank (421) that supplies gasket (5) to set up, the upper end and precast beam (4) upper end of gasket (5) flush, go up prefabricated scissors ladder (22) and precast beam (4) and be connected in gasket (5) position.