CN220550785U - Pre-assembled rotary steel stair - Google Patents

Abstract

The application discloses rotatory steel stair is assembled in advance, it includes the platform roof beam, hyperboloid stair roof beam and tread, the hyperboloid stair roof beam is enclosed into both ends open-ended spiral square tubulose by two first curved surface steel sheets and two second curved surface steel sheets, the tread is provided with a plurality of on one of them first curved surface steel sheet, the platform roof beam sets up between the tip of two hyperboloid stair roof beams, the both ends of platform roof beam all are provided with a set of coupling assembling that is used for being connected with the hyperboloid stair roof beam, coupling assembling includes butt board and connecting strip, the one end of butt board sets up in the inner chamber of platform roof beam, the other end stretches out the platform roof beam, the connecting strip is connected in one side of butt board, the spread groove that corresponds with the connecting strip form position has been seted up to the inboard of first curved surface steel sheet. The utility model has the effect of convenient installation to rotatory steel construction stair.

Description

Pre-assembled rotary steel stair

Technical Field

The application relates to the technical field of building construction, in particular to a pre-assembled rotary steel stair.

Background

Spiral stairs, also known as spiral stairs, are generally classified into spiral stairs provided around a single column and spiral stairs without a center column, the landings and steps of which are all sector-shaped planes. Spiral stairs without center pillar support mainly rely on double spiral beams below the steps to support loads. The steel structure rotary stairway belongs to the special-shaped space structure. Because the factors such as manufacturing, transportation and installation of the steel structure rotary stair are considered, the steel structure rotary stair needs to be manufactured in sections and is installed and welded in actual use.

In view of the above related art, the inventor considers that in the installation process of the spiral stair, each prefabricated part needs to be welded on a construction site, so that the processing is inconvenient, and the construction is prolonged.

Disclosure of Invention

In order to facilitate the installation of the rotating steel structure stairway, the application provides a pre-assembled rotating steel stairway.

The application provides a rotatory steel stair of pre-assembling adopts following technical scheme:

the utility model provides a rotatory steel stair of pre-assembling, includes platform roof beam, hyperboloid stair roof beam and tread, hyperboloid stair roof beam is by two first curved surface steel sheets that are parallel to each other and two second curved surface steel sheets that are parallel to each other enclose into both ends open-ended spiral square tubular, the tread be provided with a plurality of on one of them first curved surface steel sheet, a plurality of the equal interval spiral of tread rises on the direction of height and sets up, a plurality of the equal angle annular setting on the horizontal direction of tread, the platform roof beam sets up two between the tip of hyperboloid stair roof beam, the platform roof beam is both ends open-ended square tubular, the both ends of platform roof beam all be provided with a set of be used for with the coupling assembling of hyperboloid stair roof beam connection, coupling assembling includes butt plate and connecting strip, every group contain two in the coupling assembling the butt plate, the one end of butt plate set up in the inner chamber of platform roof beam, the other end stretches out the platform roof beam, the butt for with first curved surface shape corresponds the steel sheet in the equal angle annular setting on the horizontal direction, the platform roof beam has a pair of two curved surface drive plate and has the side drive groove to keep away from each other, the side is connected with two curved surface roof beam has the connecting strip, and is close to each other.

By adopting the technical scheme, the platform beam and the hyperboloid stair beam are prefabricated and formed in a factory, and are connected at a construction site. The platform beam is abutted with the end part of the hyperboloid stair beam, the two abutting plates are driven to move towards the direction away from each other through the driving piece, the abutting plates are abutted with the inner side of the first curved surface steel plate and are attached to the inner side of the first curved surface steel plate, and the connecting strips connected to the abutting plates are embedded in the connecting grooves on the inner side of the first curved surface steel plate, so that the detachable quick connection between the platform beam and the hyperboloid stair beam is realized. The platform beams are alternately connected with the hyperboloid stair beams to form continuous spiral stairs. Through mutually supporting of platform roof beam, hyperboloid stair roof beam, coupling assembling and driving piece, realized spiral stair's quick detachable connection, have the effect of convenient installation to rotatory steel construction stair.

Optionally, the driving piece includes two-way screw rod, guide arm and first spiral piece, the both ends of two-way screw rod are provided with the screw thread section that the screw thread revolves to opposite directions, two-way screw rod vertical rotation connect in between two horizontal lateral walls of platform roof beam, the one end of two-way screw rod run through the lateral wall of platform roof beam and with first spiral piece is connected, screw thread section and two at two ends of two-way screw rod butt plate one-to-one and threaded connection, the guide arm runs through two butt plate and rather than sliding connection.

Through adopting above-mentioned technical scheme, revolve and twist first soon, two-way screw rod rotate, and two butt boards are kept away from each other or are close to the direction emergence of direction of going towards each other under the drive of two-way screw rod and the guide effect of guide arm. The arrangement of the driving piece realizes the common driving of the two abutting plates.

Optionally, the both ends of platform roof beam length direction all are connected with a bearing groove that is used for the bearing hyperboloid stair roof beam tip, the bearing groove includes two bearing curb plates and connects two bearing bottom plate between the bearing curb plate base, the shape of bearing curb plate with two the setting of second curved surface steel sheet one-to-one, bearing bottom plate with the setting of first curved surface steel sheet corresponds, hyperboloid stair roof beam's tip overlap joint in between bearing bottom plate and the bearing curb plate.

Through adopting above-mentioned technical scheme, when installing, insert hyperboloid stair beam in the bearing groove, the laminating of first curved surface curb plate and the bearing bottom plate that is located the below, bearing curb plate and the laminating of second curved surface steel sheet. The bearing groove carries out the bearing to the tip of hyperboloid stair girder, has improved the connection stability of both.

Optionally, be provided with the second coupling assembling on the bearing curb plate, the second coupling assembling is including twisting screw rod, stopper and second and revolve the piece, revolve screw rod threaded connection in on the bearing curb plate, the stopper connect in it is located to revolve the screw rod the inside one end of bearing groove, the second revolve the piece connect in revolve the other end of screw rod, length direction's tip on the second curved surface steel sheet seted up with revolve the slot that the screw rod corresponds, the slot with first curved surface steel sheet parallel arrangement.

By adopting the technical scheme, when the hyperboloid stair beam is inserted into the bearing groove, the screwing screw rod moves into the slot of the second curved surface steel plate. And the second rotating block is screwed, and the limiting block moves towards the direction close to the second curved surface steel plate under the driving of the screwing screw until being abutted against the limiting block, so that the connection between the second connecting assembly and the second curved surface steel plate is realized. The arrangement of the second connecting component improves the connection stability between the platform beam and the hyperboloid stair beam.

Optionally, washers are connected to both ends of the platform beam in the length direction.

Through adopting above-mentioned technical scheme, when being connected hyperboloid stair beam and platform roof beam, the packing ring presss from both sides and locates between platform roof beam and the hyperboloid stair beam, has reduced the possibility that the platform roof beam takes place the damage with hyperboloid stair beam tip when both take place relative displacement.

Optionally, the inside of platform roof beam is vertical to be connected with the braced frame, the plane that the braced frame is located with the length direction of platform roof beam is perpendicular, cross is provided with the bracing piece in the braced frame.

Through adopting above-mentioned technical scheme, supporting frame and alternately set up the supporting rod in the supporting frame and support the platform roof beam, improved the structural stability and the bearing strength of platform roof beam in the use.

Optionally, a plurality of spouts have been seted up to the bearing bottom plate side that is close to the inboard in parallel, the spout is followed the length direction setting of first curved surface steel sheet, first curved surface steel sheet with one side that the bearing bottom plate laminated is connected with a plurality of with the slip strip of spout one-to-one.

Through adopting above-mentioned technical scheme, when pegging graft hyperboloid stair beam's tip in the bearing groove, the strip that slides of first curved surface steel sheet bottom slides in the spout on the bearing bottom plate, and the strip that slides has improved the structural stability in the installation with the setting of spout.

Optionally, a plurality of reinforcing rib rods are connected to one side of the supporting bottom plate, which is located on the outer side.

Through adopting above-mentioned technical scheme, the stiffening rib pole supports the bottom surface of bearing groove, has improved bearing groove structural stability and bearing capacity in the use.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the rapid detachable connection of the spiral stair is realized through the mutual matching of the platform beam, the hyperboloid stair beam, the connecting component and the driving piece, and the spiral stair has the effect of being convenient for installing the rotating steel structure stair;

2. the arrangement of the second connecting component improves the connection stability between the platform beam and the hyperboloid stair beam;

3. the reinforcing rib rod supports the bottom surface of the bearing groove, so that the structural stability and bearing capacity of the bearing groove in the use process are improved.

Drawings

Fig. 1 is a schematic structural view of a pre-assembled rotary steel stair according to an embodiment of the present application.

Fig. 2 is a schematic view of the structure of the bottom of the landing girder and the hyperboloid stair girder according to the embodiment of the present application.

Fig. 3 is a partial cross-sectional view of an embodiment of the present application for embodying a first connection assembly.

Fig. 4 is a partial cross-sectional view of an embodiment of the present application for embodying a connection slot.

Fig. 5 is a schematic structural diagram of an embodiment of the present application for embodying a first connection component.

Fig. 6 is a partial cross-sectional view of an embodiment of the present application for embodying the internal structure of a platform beam.

Reference numerals illustrate: 1. a platform beam; 2. hyperboloid stair beams; 21. a first curved steel plate; 22. a second curved steel plate; 3. a tread plate; 4. a first connection assembly; 41. an abutting plate; 42. a connecting strip; 43. a bidirectional screw; 44. a guide rod; 45. a first spin block; 5. a second connection assembly; 51. a limiting block; 52. screwing the screw; 53. a second rotating block; 6. a connecting groove; 7. a support groove; 71. bearing the side plate; 72. a supporting bottom plate; 8. reinforcing rib bars; 9. a chute; 10. a slip bar; 11. a slot; 12. a gasket; 13. a support frame; 14. and (5) supporting the rod.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-6. The embodiment of the application provides a rotatory steel stair of pre-assembling, it has the effect of convenient installation to rotatory steel structure stair.

Referring to fig. 1 and 2, a preassembled rotary steel stair comprises a landing beam 1, a hyperboloid stair beam 2, a tread plate 3, a first connection assembly 4 and a second connection assembly 5. The hyperboloid stair beam 2 is a square tube which is spirally arranged, and the hyperboloid stair beam 2 is jointly surrounded by two first curved surface steel plates 21 which are arranged in parallel and two second curved surface steel plates 22 which are arranged in parallel. The plurality of the tread plates 3 are arranged on the first curved surface steel plate 21 positioned above, the plurality of the tread plates 3 are spirally lifted at equal intervals in the height direction on the first curved surface steel plate 21, and the plurality of the tread plates 3 are arranged in an annular and sequential manner at equal angles in the horizontal direction. The platform beam 1 is hollow square tube-shaped, and the first connecting components 4 are respectively provided with a group at the openings at the two ends of the platform beam 1. When in installation, the platform beams 1 and the hyperboloid stair beams 2 are alternately arranged and connected through the first connecting component 4, the two hyperboloid stair beams 2 and one platform beam 1 jointly form a layer of stair, and the platform beams 1 are connected with a floor structure (not shown in the drawing) in the construction process.

Referring to fig. 2 and 3, the first connecting assembly 4 includes an abutment plate 41, a connecting bar 42, a bi-directional screw 43, a guide rod 44, and a first screw 45. The bidirectional screw 43 is vertically and rotatably connected between two opposite side walls of the platform beam 1, and the bottom end of the bidirectional screw 43 penetrates through the platform beam 1 and is fixedly connected with the first rotary block 45. The guide rods 44 are fixedly connected between two opposite side walls in the platform beam 1 and are arranged parallel to the bi-directional screw rods 43. Each group of first connecting components 4 comprises two abutting plates 41 which are arranged in parallel, and the shape of each abutting plate 41 is corresponding to that of the first curved surface steel plate 21. The connecting strips 42 are fixedly connected to each of the mutually distant side walls of each abutment plate 41. The first curved surface steel plate 21 is provided with a connecting groove 6 corresponding to the shape and position of the connecting bar 42 on one side close to the abutting plate 41. Two sections of screw thread sections with opposite rotation directions are arranged at two ends of the bidirectional screw rod 43, two abutting plates 41 are in one-to-one correspondence with the two screw thread sections of the bidirectional screw rod 43 and are in threaded connection, one side of each abutting plate 41 provided with a connecting strip 42 extends out of the platform beam 1, and a guide rod 44 penetrates through the two abutting plates 41 and is in sliding fit with the two abutting plates.

Referring to fig. 2-4, the openings at both ends of the platform beam 1 are fixedly connected with a supporting groove 7 for supporting the end of the hyperboloid stair beam 2, and the supporting groove 7 comprises two supporting side plates 71 arranged in parallel and a supporting bottom plate 72 connected between the bottom edges of the two supporting side plates 71. The shape of the support side plate 71 corresponds to the shape of the two second curved surface steel plates 22 one by one, and the shape of the support bottom plate 72 corresponds to the shape of the first curved surface steel plate 21. The bottom surface fixedly connected with a plurality of stiffening rib bars 8 of supporting bottom plate 72, a plurality of spouts 9 have been seted up to the top surface of supporting bottom plate 72, and the length direction of spout 9 sets up along the length direction of first curved surface steel sheet 21. A plurality of sliding strips 10 which are in one-to-one correspondence with a plurality of sliding grooves 9 are fixedly connected to the bottom surface of the first curved surface steel plate 21 positioned below.

Referring to fig. 4 and 5, the second connecting assembly 5 is provided with a set of second connecting assemblies 5 on each of the supporting side plates 71, the second connecting assemblies 5 include a limiting block 51, a screwing screw 52 and a second screwing block 53, the screwing screw 52 is horizontally screwed on the supporting side plates 71, the limiting block 51 is fixedly connected to one end of the screwing screw 52 located in the supporting groove 7, and the second screwing block 53 is fixedly connected to one end of the screwing screw 52 located outside the supporting groove 7. Two ends of the second curved surface steel plate 22 in the length direction are provided with a slot 11 along the length direction, and the arrangement position of the slot 11 is corresponding to the screwing screw 52.

Referring to fig. 5 and 6, washers 12 are fixedly connected to openings at both ends of the platform beam 1, a supporting frame 13 is fixedly connected to the inside of the platform beam 1, a plane of the supporting frame 13 is perpendicular to the length direction of the platform beam 1, and supporting rods 14 are arranged in a crossed manner and fixedly connected to the inside of the supporting frame 13.

Referring to fig. 1, 2 and 4, a single platform beam 1 and a hyperboloid stair beam 2 are prefabricated and formed in a factory, and the platform beam 1 and the hyperboloid stair beam 2 are alternately arranged and installed at a construction site. The end of the hyperboloid stair beam 2 is inserted into the bearing groove 7, the first curved surface steel plate 21 positioned below is attached to the bearing bottom plate 72, and the bearing side plate 71 is attached to the second curved surface steel plate 22. The sliding strip 10 slides in the sliding groove 9, so that the stability in the plugging process is improved. The screw 52 slides in the slot 11 as the hyperboloid stair beam 2 is pushed.

Referring to fig. 4-6, when the end of the platform beam 1 abuts against the end of the hyperboloid stair beam 2, the second rotary block 53 is rotated, and the limiting block 51 moves towards the direction of the second curved steel plate 22 until abutting against the second rotary block 53, so that the connection between the bearing groove 7 and the hyperboloid stair beam 2 is realized. The washer 12 reduces the possibility of damage caused by friction between the ends of the hyperboloid stair beam 2 and the platform beam 1 when the two beams shake relatively. The supporting frame 13 and the supporting rods 14 support the platform beam 1, so that the structural stability of the platform beam 1 in use is improved. The reinforcing rib bars 8 support the supporting base plate 72, so that the stability and the bearing capacity of the supporting groove 7 in supporting the hyperboloid stair beams 2 are improved.

Referring to fig. 2 and 3, one end of the abutting plate 41 provided with the connecting strip 42 extends into the inner cavity of the hyperboloid stair beam 2, the first rotating block 45 is screwed, the bidirectional screw rod 43 is driven by the first rotating block 45 to rotate, and the two abutting plates 41 move towards the direction away from each other under the driving of the bidirectional screw rod 43 and the guiding action of the guide rod 44 until the connecting strip 42 on the abutting plate 41 is embedded into the connecting groove 6 in the first curved surface steel plate 21, so that the connection between the platform beam 1 and the hyperboloid stair beam 2 is realized. Through the setting of first coupling assembling 4 and second coupling assembling 5, realized the quick detachable connection between platform roof beam 1 and the hyperboloid stair roof beam 2, improved installation effectiveness. When in installation, the two hyperboloid stair beams 2 and one platform beam 1 form a layer of spiral stair together.

The implementation principle of the pre-assembled rotary steel stair in the embodiment of the application is as follows: the individual platform beams 1 and hyperboloid ladder beams 2 are prefabricated and formed in a factory, and the platform beams 1 and hyperboloid ladder beams 2 are alternately arranged and installed at a construction site. The end of the hyperboloid stair beam 2 is inserted into the bearing groove 7, and after the end of the platform beam 1 is abutted with the end of the hyperboloid stair beam 2, the second rotating block 53 is rotated, and the limiting block 51 is abutted with the second curved steel plate 22 under the drive of the second rotating block 53.

One end of the abutting plate 41 provided with a connecting strip 42 stretches into the inner cavity of the hyperboloid stair beam 2, the first rotary block 45 is screwed, the two abutting plates 41 move towards the direction away from each other under the driving of the bidirectional screw rod 43 and the guiding effect of the guide rod 44, and the connecting strip 42 is embedded in the connecting groove 6 in the first curved surface steel plate 21, so that the connection between the platform beam 1 and the hyperboloid stair beam 2 is realized. Through the setting of first coupling assembling 4 and second coupling assembling 5, realized the quick detachable connection between platform roof beam 1 and the hyperboloid stair roof beam 2, improved installation effectiveness.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. The utility model provides a rotatory steel stair of pre-assembling which characterized in that: the double-curved-surface stair beam comprises a platform beam (1), a double-curved-surface stair beam (2) and a tread (3), wherein the double-curved-surface stair beam (2) is formed by encircling two mutually parallel first curved-surface steel plates (21) and two mutually parallel second curved-surface steel plates (22) into a spiral square tube shape with two open ends, the tread (3) is arranged on one of the first curved-surface steel plates (21), a plurality of the tread (3) are arranged at equal intervals in the height direction in a spiral ascending manner, a plurality of the tread (3) are arranged in an equal angle annular manner in the horizontal direction, the platform beam (1) is arranged between the two ends of the double-curved-surface stair beam (2), the platform beam (1) is square tube shape with two open ends, two ends of the platform beam (1) are respectively provided with a group of connecting components used for being connected with the double-curved-surface stair beam (2), each group of connecting components comprises a butt plate (41) and a connecting strip (42), two butt plates (41) are arranged in the connecting components, the butt plates (41) are arranged at one side of the two butt plates (41) and the two butt plates (41) are opposite to each other, one side of the two butt plates (41) is connected with one side of the two steel plates (41), connecting grooves (6) corresponding to the shapes and the positions of the connecting strips (42) are formed in the inner side of the first curved surface steel plate (21), and driving pieces for driving the two abutting plates (41) to be close to or far away from each other are arranged on the platform beam (1).

2. A preassembled rotating steel stairway according to claim 1, characterised in that: the driving piece comprises a bidirectional screw rod (43), a guide rod (44) and a first rotating block (45), threaded sections with opposite directions are arranged at two ends of the bidirectional screw rod (43), the bidirectional screw rod (43) is vertically and rotatably connected between two horizontal side walls of the platform beam (1), one end of the bidirectional screw rod (43) penetrates through the side walls of the platform beam (1) and is connected with the first rotating block (45), the threaded sections at two ends of the bidirectional screw rod (43) are in one-to-one correspondence with the two abutting plates (41) and are in threaded connection, and the guide rod (44) penetrates through the two abutting plates (41) and is in sliding connection with the two abutting plates.

3. A preassembled rotating steel stairway according to claim 2, characterised in that: the utility model discloses a double-curved-surface stair beam, including bearing bottom plate (72), bearing bottom plate (72) and bearing bottom plate (72) are installed in bearing bottom plate (72), bearing bottom plate (72) with first curved surface steel sheet (21) set up in correspondence, the tip overlap joint of double-curved-surface stair beam (2) in between bearing bottom plate (72) and bearing side plate (71), bearing bottom plate (72) and bearing bottom plate (71) are all connected with one-to-one at the both ends of platform beam (1) length direction bearing groove (7) of double-curved surface stair beam (2) tip.

4. A preassembled rotating steel stairway according to claim 3, characterised in that: be provided with second coupling assembling (5) on bearing curb plate (71), second coupling assembling (5) are including screwing screw rod (52), stopper (51) and second revolve piece (53), screw rod (52) threaded connection in on bearing curb plate (71), stopper (51) connect in screw rod (52) are located the inside one end of bearing groove (7), second revolve piece (53) connect in screw rod (52) the other end, slot (11) that screw rod (52) correspond are seted up to length direction's tip on second curved surface steel sheet (22), slot (11) with first curved surface steel sheet (21) parallel arrangement.

5. A preassembled rotating steel stairway according to claim 1, characterised in that: and washers (12) are connected to two ends of the platform beam (1) in the length direction.

6. A preassembled rotating steel stairway according to claim 5, characterised in that: the inside of the platform beam (1) is vertically connected with a supporting frame (13), the plane of the supporting frame (13) is perpendicular to the length direction of the platform beam (1), and supporting rods (14) are arranged in the supporting frame (13) in a crossing mode.

7. A preassembled rotating steel stairway according to claim 3, characterised in that: a plurality of sliding grooves (9) are formed in parallel on one side, close to the inner side, of the bearing bottom plate (72), the sliding grooves (9) are formed in the direction along the length direction of the first curved surface steel plate (21), and a plurality of sliding strips (10) corresponding to the sliding grooves (9) one by one are connected to one side, attached to the bearing bottom plate (72), of the first curved surface steel plate (21).

8. A preassembled rotating steel stairway according to claim 7, characterised in that: one side of the bearing bottom plate (72) positioned at the outer side is connected with a plurality of reinforcing rib rods (8).