CN211369310U

CN211369310U - Steel construction stair

Info

Publication number: CN211369310U
Application number: CN201921968856.2U
Authority: CN
Inventors: 董苏洲
Original assignee: Shanghai Xianggu Steel Structure Engineering Co ltd
Current assignee: Shanghai Xianggu Steel Structure Engineering Co ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-08-28
Anticipated expiration: 2029-11-13

Abstract

The utility model discloses a steel construction stair, the technical field of stair have solved the problem that is difficult to dismantle and changes arbitrary footboard, and its technical scheme main points are: the utility model provides a steel construction stair, includes spiral support rod and footboard, spiral support rod bottom and ground rigid coupling, and evenly be equipped with a plurality of rotation axes along its trend on it, the rotation axis is including the rotation section that links to each other with spiral support rod and keep away from the screw thread section of spiral support rod, be equipped with on the screw thread section rather than supporting and play limiting displacement threaded fastener, be equipped with on the footboard and rotate the rotatory pipe that the rotation section was located to the cover, be provided with on the spiral support rod and supply the footboard butt and keep the footboard to be horizontally butt board, the function of arbitrary footboard of dismantlement change that can convenient and fast.

Description

Steel construction stair

Technical Field

The utility model relates to a technical field of stair, in particular to steel construction stair.

Background

Stairs are one of the most functional elements in modern buildings, and are the most common and closest building components in contact with people in the buildings. Along with the improvement of people's living standard, also higher and higher to residential architecture and indoor decoration and fitment requirement, satisfying under service function's the prerequisite, people begin to pursue the more nimble art molding, spiral stair's streamline molding is pleasing to the eye, elegant and the space that occupies is little, and the reinforced concrete stair that the stair dead weight of steel construction is heavier need lightly many, and is lighter pleasing to the eye on the molding, so receive people's favor more and more.

Arrange in the great regional steel construction spiral stair of flow of people and receive the damage easily because the rate of utilization is higher, current steel construction spiral stair are usually in the same place each footboard and the whole fastening connection of stair through the welding, when certain footboard is impaired, have the problem of unable convenient and fast's dismantlement change this impaired footboard.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a steel construction stair has the function of dismantling and changing arbitrary footboard that can convenient and fast.

The above technical purpose of the present invention can be achieved by the following technical solutions:

by adopting the technical scheme, the pedal is rotatably sleeved on the rotating shaft, the pedal can be disassembled only by horizontally drawing out the pedal during disassembly, the disassembly and replacement process is convenient and quick, the threaded fastener can limit the pedal during use, the pedal is prevented from being separated during use, the stability of the pedal is ensured, the safety of pedestrians is ensured, and the pedal can be replaced only by unscrewing the threaded fastener when the pedal needs to be replaced;

the arrangement can enable the pedals to be screwed upwards into the spiral supporting rod to play a role in accommodating the pedals when the stairs are idle, so that the space is further saved;

the butt joint board keeps the footboard in the horizontally state conveniently supplies the pedestrian from top to bottom, keeps the stability of footboard structure simultaneously, and spiral stair's overall structure is simple, and the installation is simple and convenient, and the time limit for a project is short.

The utility model discloses further set up to: the length direction of each rotating shaft is horizontally tangent to the spiral supporting rod.

By adopting the technical scheme, the pedals which are rotatably arranged with the rotating shaft can keep the same length direction as the radial direction of the central circle of the spiral supporting rod, and the pedestrians can conveniently move up and down along the spiral direction.

The utility model discloses further set up to: and a set square for supporting the rotating shaft is arranged between the rotating shaft and the spiral supporting rod.

Through adopting above-mentioned technical scheme, the set-square has increased the area of contact of rotation axis and spiral support pole, has strengthened the structural strength of rotation axis, and indirectly guaranteed the security of steel construction stair, and the set-square has occupied the less position of vertical direction interval between rotation axis and the spiral support pole, leave the rotation axis outer end space for rotation section and screw thread section, prevented to rotate the rotatory pipe that sets up on rotation section and received the hindrance of spiral support pole, guaranteed that the rotatory pipe has great turned angle.

The utility model discloses further set up to: the butt joint board is V-arrangement, and butt joint board upper surface and footboard bottom surface are the horizontal contact to two ends of butt joint board keeping away from the spiral bracing piece are equipped with the rigid coupling spare with footboard looks rigid coupling.

Through adopting above-mentioned technical scheme, footboard and butt plate rigid coupling make the footboard can not only remain stable and supply the people to trample to the butt plate is V-arrangement and makes the footboard by fixed more stable, is more difficult for rocking, has guaranteed pedestrian's safety.

The utility model discloses further set up to: the spiral supporting rod is provided with a handrail with the same direction as the spiral supporting rod, a straight rod is connected between the handrail and the spiral connecting rod, and the distance between the handrail and the spiral supporting rod is shorter than the length of the pedal.

Through adopting above-mentioned technical scheme, the footboard keeps rotating the relation that sets up with the rotation axis, so the footboard can rotate the inboard of spiral bracing piece back with the overlap joint on the handrail, can save more spaces after the footboard is accomodate.

The utility model discloses further set up to: the spiral bracing piece axle center is vertical to be equipped with well core rod, a plurality of connecting rods of fixedly connected with between well core rod and the handrail.

Through adopting above-mentioned technical scheme, the stability of spiral bracing piece has been guaranteed indirectly to the connecting rod, can play the effect that reduces rocking of spiral bracing piece, has further strengthened overall structure's steadiness.

The utility model discloses further set up to: and reinforcing ribs are arranged at the bottom end of the central rod.

Through adopting above-mentioned technical scheme, the stiffening rib makes well core rod's structural strength more stable, has guaranteed that well core rod can be stable play the effect of support for the spiral support pole.

The utility model discloses further set up to: the width of the pedal is gradually increased along the direction far away from the spiral supporting rod, and the upper surface of the pedal is provided with anti-skid grains.

Through adopting above-mentioned technical scheme, increased the area of trampling of footboard, reduced and stepped on empty possibility to guaranteed pedestrian's safety, and the coefficient of friction of its surperficial antiskid line is great, has reduced the condition that appears skidding when the pedestrian is from top to bottom, has further promoted the security.

To sum up, the utility model discloses following beneficial effect has:

this steel construction stair rotate the cover through the footboard and locate on the rotation axis, make the footboard can the rotation axis rotatory and can follow rotation axis length direction and take out the footboard, thereby realize convenient and fast dismantles and the installation to the footboard, the rotation axis outer end is equipped with threaded fastener makes the footboard can not break away from with the rotation axis accidentally, the safety when having guaranteed pedestrian's walking from top to bottom on steel construction stair, and when stair were idle, can be with the footboard upwards rotatory until supporting on the handrail, and then save space, and be equipped with the butt board bottom the footboard and support and make it keep the level in the footboard bottom, and the butt board is equipped with the rigid coupling spare at its both ends and makes its and footboard rigid coupling, the possibility that the footboard took place to rock has been reduced, pedestrian's security about the stair has been increased.

Drawings

FIG. 1 is a schematic view of the overall structure of a steel-structure stair;

FIG. 2 is a vertical cross-sectional view of the steel structure staircase at the rotation axis;

fig. 3 is a lower view of the steel structure staircase at the tread.

In the figure, 1, a center rod; 11. a connecting rod; 12. reinforcing ribs; 2. a spiral support rod; 21. a set square; 22. a rotating shaft; 221. a rotating section; 222. a threaded segment; 23. a threaded fastener; 24. a butt joint plate; 241. a fastening member; 25. a handrail; 26. a straight rod; 3. a pedal; 31. the tube is rotated.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the utility model provides a steel structure stair, including well core rod 1, handrail 25, spiral bracing piece 2 and footboard 3.

Well core rod 1 stands upright in ground and with ground looks rigid coupling, well core rod 1 bottom is equipped with stiffening rib 12, is equipped with connecting rod 11 between well core rod 1 and the handrail 25 to link to each other through connecting rod 11, connecting rod 11 is the level setting, and sets up along handrail 25 trends equidistant.

The handrails 25 and the spiral support rods 2 are consistent in trend, straight rods 26 connected with each other are arranged between the handrails 25 and the spiral support rods 2, the number of the straight rods 26 is multiple, the number of the straight rods is consistent with the arrangement of the connecting rods 11, and the distance between the handrails 25 and the spiral support rods 2 is shorter than the length of the pedals 3.

Referring to fig. 2, a plurality of rotating shafts 22 are uniformly arranged on the spiral supporting rod 2 along the direction of the spiral supporting rod, the length direction of each rotating shaft 22 is horizontally tangent to the spiral supporting rod 2, a triangular plate 21 is arranged between each rotating shaft 22 and the spiral supporting rod 2, the width of each triangular plate 21 is the same as the diameter of each spiral supporting rod 2, one side surface of each triangular plate 21, on which the rotating shafts 22 are arranged, is a vertical surface, and each rotating shaft 22 is perpendicular to the side surface and keeps a horizontal state with the ground.

Referring to fig. 2 and 3, the rotation shaft 22 includes a rotation section 221 connected to the triangle 21 and a thread section 222 far away from the triangle 21, the pedal 3 is provided with a rotation tube 31 rotatably sleeved on the rotation section 221, the vertical distance between the rotation section 221 and the spiral support rod 2 is greater than the wall thickness of the rotation tube 31, the thread section 222 is provided with a thread fastener 23 for preventing the rotation tube 31 from falling off from the rotation shaft 22, and the thread fastener 23 may be a nut.

Footboard 3 is along keeping away from the direction width crescent of rotating tube 31, is provided with on the spiral bracing piece 2 to be located rotation axis 22 below butt plate 24, and butt plate 24 is the V-arrangement, and butt plate 24 upper surface offsets for the level with footboard 3 bottom surface to the both ends head that spiral bracing piece 2 was kept away from to butt plate 24 is equipped with the rigid coupling piece 241 with footboard 3 looks rigid coupling, and rigid coupling piece 241 can be the bolt, and the bolt passes butt plate 24 threaded connection and realizes the fixed of footboard 3 on footboard 3.

The using method comprises the following steps:

when the pedal 3 is installed, the length directions of the rotating pipe 31 and the rotating shaft 22 on the pedal 3 are aligned, the rotating pipe 31 penetrates into the rotating shaft 22, the pedal 3 horizontally abuts against the abutting plate 24, then the nut and the threaded section 222 are fastened to ensure that the rotating pipe 31 is not separated from the rotating shaft 22, finally, the pedal 3 is fixedly connected with the bolts at two ends of the abutting plate 24, the stability of the pedal 3 is ensured, the installation of the single pedal 3 is completed at the moment, and the installation of the pedal 3 at each level is repeated, so that the steel structure stair can be completely installed.

To disassemble the pedal 3, the nut is first removed from the threaded section 222, and then the fastening members 241 of the abutting plate 24 are sequentially removed, so that the pedal 3 can be taken out along the length direction of the rotating shaft 22, thereby completing the disassembly of the pedals 3 at different levels.

When the spiral stair is idle, the bolts on the two ends of the abutting plate 24 can be detached, so that the pedal 3 is separated from the abutting plate 24, then the pedal 3 is rotated upwards to turn to the inner side of the spiral supporting column and abut against the handrail 25, and at the moment, the pedal 3 is in a stable abutting state.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a steel construction stair, includes spiral bracing piece (2) and footboard (3), its characterized in that, spiral bracing piece (2) bottom and ground rigid coupling, and evenly be equipped with a plurality of rotation axes (22) along its trend on it, rotation axis (22) are including rotatory section (221) that link to each other with spiral bracing piece (2) and keep away from screw thread section (222) of spiral bracing piece (2), be equipped with on screw thread section (222) rather than supporting and play limiting displacement threaded fastener (23), be equipped with on footboard (3) and rotate rotatory pipe (31) that the cover located rotatory section (221), be provided with on spiral bracing piece (2) and supply footboard (3) butt and keep footboard (3) to be horizontally butt joint board (24).

2. A staircase of steel construction according to claim 1, characterised in that the length direction of each of the rotation axes (22) is horizontally tangent to the helical support struts (2).

3. A steel structure staircase according to claim 1, characterized in that between the rotation shaft (22) and the spiral support rods (2) there are provided triangular plates (21) providing support for the rotation shaft (22).

4. The stair with steel structure according to claim 1, wherein the butt plate (24) is V-shaped, the upper surface of the butt plate (24) is horizontally contacted with the bottom surface of the tread (3), and two ends of the butt plate (24) far away from the spiral supporting rod (2) are provided with fixing pieces (241) fixedly connected with the tread (3).

5. The stair with the steel structure according to claim 1, wherein the spiral supporting rod (2) is provided with a handrail (25) with the same direction, a straight rod (26) is connected between the handrail (25) and the spiral connecting rod (11), and the distance between the handrail (25) and the spiral supporting rod (2) is shorter than the length of the pedal (3).

6. The steel structure stair of claim 5, wherein a central rod (1) is vertically arranged at the axis of the spiral supporting rod (2), and a plurality of connecting rods (11) are fixedly connected between the central rod (1) and the handrail (25).

7. Steel structural staircase according to claim 6, characterised in that the bottom end of the central rod (1) is provided with stiffening ribs (12).

8. The stair of steel structure according to claim 1, wherein the width of the tread (3) is gradually increased along the direction away from the spiral supporting rod (2), and the upper surface of the tread is provided with anti-skid lines.