CN214995387U - Novel adjustable steel construction stair - Google Patents

Abstract

The utility model provides a novel adjustable steel structure stair, which is used for solving the technical problems of large volume, difficult transportation, difficult storage and difficult recycling existing in the existing steel structure stair, and comprises a support frame and at least two support pedals; the support frame comprises connecting blocks the number of which is the same as that of the support pedals, one end of each connecting block is provided with a fixing part and a connecting groove, the other end of each connecting block is provided with an embedded block matched with the inner shape of the connecting groove, and the embedded blocks on the connecting blocks are embedded into the connecting grooves on the adjacent connecting blocks; the supporting pedals are respectively and correspondingly fixed on the fixing parts of the connecting blocks. Set each structure through with steel construction stair to detachable form, the steel construction stair of being convenient for dismantlement, installation and transportation, cyclic utilization nature is strong, and it is little to store area.

Description

Novel adjustable steel construction stair

Technical Field

The utility model relates to a technical field of steel wood stair especially relates to a novel adjustable steel construction stair.

Background

The stairs are convenient for people to freely go up and down two spaces, and are also necessary and unnecessary building structures of a duplex structure house. At present, the steel structure stair receives people's favor because its decorative stronger and structural nature is better. However, the existing steel structure stairway has the defects that the framework structure is large in size, difficult to transport and store and difficult to recycle, and therefore, the improvement of the existing steel structure stairway is particularly important.

SUMMERY OF THE UTILITY MODEL

Big, difficult transportation, difficult storage and difficult cyclic utilization's that exist to current steel construction stair technical problem, the utility model provides a novel adjustable steel construction stair through setting up detachable strutting arrangement and fixing device, the steel construction stair's of being convenient for dismantlement, installation and transportation, and cyclic utilization nature is strong, and it is little to store area.

In order to achieve the above purpose, the technical solution of the present invention is realized as follows:

a novel adjustable steel structure stair comprises a support frame and at least two support pedals; the support frame comprises connecting blocks the number of which is the same as that of the support pedals, one end of each connecting block is provided with a fixing part and a connecting groove, the other end of each connecting block is provided with an embedded block matched with the inner shape of the connecting groove, and the embedded blocks on the connecting blocks are embedded into the connecting grooves on the adjacent connecting blocks; the supporting pedals are respectively and correspondingly fixed on the fixing parts of the connecting blocks.

Furthermore, the side wall of the connecting groove is provided with a through hole, the side wall of the embedding block is provided with a limiting groove corresponding to the position of the through hole, a limiting part is arranged in the through hole, and the limiting part penetrates through the through hole and the limiting groove corresponding to the through hole and is fixed.

Furthermore, the surface of one side of the supporting pedal, which is far away from the fixing part, is provided with anti-skid grains.

Furthermore, one side of the supporting pedal, which is far away from the fixing part, is provided with an absorption anti-skid layer, and the water absorption anti-skid layer is any one of a spandex anti-skid layer, a terylene anti-skid layer and a cotton-flax layer with anti-skid lines.

Furthermore, a stabilizing frame is arranged on the supporting pedal and fixed on one side of the supporting pedal, which is far away from the fixing part.

Further, firm frame includes two dead levers, and the dead lever is including two at least connecting rods that connect gradually, and the one end of connecting rod is provided with the joint hole, and the other end of connecting rod is provided with elastic bulge, and adjacent connecting rod passes through elastic bulge embedding joint hole fixed connection, and two crisscross settings of dead lever are on supporting the footboard, and the crosspoint of two dead levers is located the center of supporting the footboard, and the both ends of dead lever are fixed on the one corner of supporting the footboard through the chucking knot respectively.

Further, the connecting groove is cylindrical in shape.

Further, be provided with between the connecting block and increase the piece, the one end that increases the piece is provided with the card that suits with the inside shape of spread groove and blocks the piece, increases the other end of piece and is provided with the joint groove that suits with the appearance of mosaic block, blocks in the spread groove of a connecting block, the mosaic block embedding joint inslot of another adjacent connecting block of card.

Furthermore, the both ends of support frame fixedly connected with respectively place the first bearing block subaerial and place the second bearing block on the floor, be provided with the bearing groove that suits with the appearance of mosaic block on the first bearing block, be provided with the bearing block that suits with the inside shape of spread groove on the second bearing block, mosaic block embedding on the connecting block of support frame one end bears the weight inslot portion, in the spread groove on the connecting block of the support frame other end is gone into to the bearing block embedding.

Furthermore, the supporting pedals on the supporting frame are hung on the wall body through the bearing frame, the shape of the bearing frame is matched with the shape of each supporting pedal on the supporting frame, and the bearing frame is fixed on the wall body through screws.

The utility model has the advantages that:

1. the utility model discloses setting up the detachable support frame that links up all around, not only can guaranteeing the support intensity when using, area is little moreover, easily installs, dismantles and transports.

2. The utility model discloses be provided with firm frame on supporting the footboard, support intensity and stability when further promoting the use.

3. The utility model discloses be provided with and increase the device, increased the utility model discloses an use the scene.

4. The utility model discloses all be provided with load-bearing device in the upper and lower of support frame and side, further promote support intensity and stability when using.

5. The utility model discloses a connected mode between each device is detachable connection, has further guaranteed the utility model discloses an installation, the convenience of dismantling and transporting.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

Fig. 2 is a schematic structural view of the connecting block.

Fig. 3 is a schematic structural diagram of the limiting member.

Fig. 4 is a front view of the support deck.

Fig. 5 is a top view of the support deck.

Fig. 6 is a schematic structural view of the connecting rod.

Fig. 7 is a schematic view of the structure of the absorbent non-slip layer on the support deck.

Fig. 8 is a schematic structural diagram of the heightening block.

Fig. 9 is a schematic structural view of the first bearing block.

Fig. 10 is a schematic structural view of the second bearing block.

In the figure, 1-support frame, 2-support pedal, 3-connecting block, 4-fixing part, 5-connecting groove, 6-mosaic block, 7-through hole, 8-limiting groove, 9-limiting part, 10-absorption anti-slip layer, 11-stabilizing frame, 12-fixing rod, 13-connecting rod, 20-ground, 21-first bearing block, 22-floor, 23-second bearing block, 24-bearing groove, 25-bearing block, 26-bearing frame, 27-wall and 28-screw.

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 any creative effort belong to the protection scope of the present invention.

As shown in fig. 1 and 2, a novel adjustable steel structure stair comprises a support frame 1 and at least two support treads 2; the support frame 1 comprises connecting blocks 3 the number of which is the same as that of the support pedals 2, one end of each connecting block 3 is provided with a fixing part 4 and a connecting groove 5, the other end of each connecting block is provided with an embedded block 6 the shape of which is matched with the inner shape of the connecting groove 5, and the embedded blocks on the connecting blocks 3 are embedded into the connecting grooves 5 on the adjacent connecting blocks 3; the supporting pedals 2 are respectively and correspondingly fixed on the fixing parts 4 of the connecting blocks 3.

In this embodiment, the support frame 1 is composed of three connecting blocks 3, and in other embodiments of the present invention, the support frame 1 may be composed of other numbers of connecting blocks 3.

In this embodiment, according to the number of the connecting blocks 3, a total of three supporting pedals 2 are used, in other embodiments of the present invention, when the number of the connecting blocks 3 changes, the number of the supporting pedals 2 also changes accordingly.

In this embodiment, when the novel adjustable steel structure stair of this embodiment is assembled, first, the second connecting block 3 on the supporting frame 1 is inserted into the connecting groove 5 at the upper end of the first connecting block through the insert block 6 at the lower end of the second connecting block 3 and fixed above the first connecting block 3; then, a third connecting block 3 on the support frame 1 is embedded into a connecting groove 5 at the upper end of a second connecting block through an embedded block 6 at the lower end of the third connecting block 3 and is fixed above the second connecting block 3; then, the three support pedals 2 are respectively fixed on the fixing parts 4 of the three connecting blocks 3; finally, the first connecting block 3 is placed on the ground of the lower layer, the third connecting block 3 is placed on the upper layer, and the steel structure stair is used for transporting between the two layers. Like this, the gravity when three connecting block 3 and three backup pad 2 undertake steel construction stair jointly and use has guaranteed the good bearing capacity of steel construction stair, and after the use is accomplished, will support footboard 2 and dismantle from connecting block 3, with three connecting block 3 alternate segregation, like this when transporting and saving, occupation space is littleer, saves the freight, promotes economic benefits.

In this embodiment, the connecting member 3 is fixed on the bottom surface of the supporting pedal 2, so as to be connected to the adjacent connecting block 3, on the other hand, the connecting member 3 connected to the bottom surface of the supporting pedal 2 does not obstruct the user from using stairs, i.e. the surface of the supporting pedal 2 far away from the connecting block 3 can be used as a tread surface, so as to facilitate the user to use the pedal by walking. Moreover, the fixed part on the connecting block 3 is fixed in the middle position of the supporting pedal 2, the length extending direction of the connecting block 3 is vertical to that of the supporting pedal 2, so that the supporting pedal 2 can transmit the pressure applied by a user to two sides with almost the same length, the stress condition of the supporting pedal 2 is better, and the service life is longer. In addition, when the user keeps away from the one side of connecting block 3 to supporting footboard 2 and applys pressure, the stress point of supporting footboard 2 is for supporting footboard 2 and connecting block 3's hookup location, so can make the ability that supports footboard 2 and endure pressure stronger, and the performance is better, and then makes the intensity of steel construction stair better, and life is longer, and the practicality is better. The utility model discloses an in other embodiments, still can set up a plurality of connecting blocks 3 such as two, three in 2 bottom surfaces of support footboard, for example, set up two connecting blocks 3 in 2 bottom surfaces of support footboard both ends symmetry, or evenly set up three connecting block 3, can strengthen steel construction stair's compressive strength, not only life is longer, and factor of safety is higher moreover, and is comparatively practical.

In this embodiment, support 2 bottom surfaces of footboard through the fixed mode of screw on the surface of fixed part 4, this interconnect's face can share the pressure that supports footboard 2 and receive, for user's gravity promptly to transmit this pressure to adjacent below connecting block 3 on, thereby guarantee that this steel construction stair receive pressure not completely concentrate on one support footboard 2 or one connecting block 3, and then strengthen steel construction stair's compressive property. In other embodiments of the present invention, the supporting pedal 2 can also be fixed to the fixing portion 4 in other detachable manners, for example, the supporting pedal 2 can be fixed to the fixing portion 4 by a manner of respectively setting the fixture block and the clamping groove on the supporting pedal 2 and the fixing portion 4.

In this embodiment, spread groove 5 is the vertical ascending recess of opening, and set up in the one end that fixed part 4 was kept away from to connecting block 3 upper surface, this spread groove 5 extends the bottom surface that supports footboard 2, be located the outside that supports footboard 2 bottom surface, so make mosaic block 6 of adjacent connecting block 3 more convenient with the joint of spread groove 5, easy to assemble and dismantlement, thereby reduce the technical degree of difficulty of installation and dismantlement, make the holder can install or dismantle this steel construction stair oneself, save the expense of engaging with manual work, the practicality is stronger.

In the embodiment, when the mosaic block 6 imbeds the spread groove 5, have great static friction power between 5 inner walls of spread groove and the 6 outer walls of mosaic block to prevent that two adjacent connecting blocks 3 from taking place the condition that drops downwards because of the action of gravity of connecting block 3 itself in below, guarantee the firm of steel construction stair when using, further guaranteed the good bearing capacity of steel construction stair. The utility model discloses an in other embodiments, can increase anti-drop layer at 5 inner walls of spread groove and/or 6 outer walls of mosaic block, promptly at the wall attached one deck silica gel material, further increase the biggest coefficient of static friction between two walls to reach better anti-drop effect.

In this embodiment, need turn 90 degrees angles when the novel adjustable steel construction stair of this embodiment uses, if there is the right angle on the transportation route between floor and floor, at this moment, only need to rotate 90 degrees with connecting block 3 that the right angle position corresponds, mosaic block 6 also rotates in 90 degrees re-embedding spread groove 5, just can solve to steel construction stair's use scene has been increased.

Further, as shown in fig. 2 and 3, a through hole 7 is formed in a side wall of the connecting groove 5, a limiting groove 8 corresponding to the through hole 7 is formed in a side wall of the insert 6, a limiting member 9 is disposed in the through hole 7, and the limiting member 9 penetrates through the through hole 7 and the limiting groove 8 corresponding to the through hole 7 and is fixed.

In this embodiment, the novel adjustable steel structure stair of this embodiment is when the equipment, and in the mosaic block 6 embedding of last connecting block 3 connecting groove 5 of next connecting block 3, pass through-hole 7 with locating part 9 and be fixed in spacing groove 8, after the use, locating part 9 is taken out from through-hole 7 and spacing groove 8. Like this, when steel construction stair used, can not break away from because of the bearing emergence on the steel construction stair between connecting block 3 and the connecting block 3, guarantee the firm of steel construction stair when using, further guaranteed the good bearing capacity of steel construction stair.

In this embodiment, the position-limiting member 9 may be a screw, and the inner wall of the position-limiting groove 8 and the side wall of the through hole 7 are provided with threads adapted to the screw. When in the mosaic block 6 embedding adjacent connecting block 3's of connecting block 3 spread groove 5, can screw up in screw in through-hole 7 and the spacing groove 8, can effectively prevent two connecting blocks 3 that link to each other and take place the condition that breaks away from on the one hand, on the other hand can also promote the stability of this steel construction stair, and the security is stronger.

In this embodiment, as shown in fig. 2, the shapes of the mosaic block 6 and the connecting groove 5 are quadrangular prisms, so that the direction of the connecting block 3 can be effectively fixed, and the orientation of the connecting block 3 does not need to be adjusted by an installer for the second time, so that the installation is more convenient and faster, and the practicability is stronger. Through holes 7 are formed in three side faces, far away from the fixing portion 4, of the connecting groove 5, and limiting grooves 8 are formed in four side faces of the embedding block 6. Therefore, when the connecting structure is used for connection, the connecting groove 5 and the embedded block 6 can be fixedly connected by using the three limiting parts 9, so that the stress can be shared, and the connection stability between the connecting blocks 3 is further ensured, thereby improving the compression resistance of the steel structure stair and prolonging the service life of the steel structure stair; when the steel structure stair need turn 90 degrees angles when using, only need to rotate 90 degrees with the connecting block 3 of right angle position, inlay block 6 also rotates 90 degrees and imbeds in the connecting groove 5, still can pass through-hole 7 with locating part 9 and fix in spacing groove 8. Certainly, if this steel construction stair live time is longer, can in time change the screw to guarantee the security of steel construction stair. The utility model discloses an in other embodiments, locating part 9 still can select fixture block or elasticity fixture block for use, and then is convenient for install and dismantle steel construction stair, and the condition that prevents two connecting blocks 3 that link to each other from taking place mutually. The utility model discloses an in other embodiments, still can set up mosaic block 6 into the cylinder, spread groove 5 sets up the cylinder groove into with mosaic block 6 looks adaptation, so, can be convenient for the installer with connecting block 3 adjustment to any direction of same horizontal plane to be applicable to the house of different grade type. For example, when the needs set up the rotary ladder between two upper and lower regions in house, the installer then rotatable connecting block 3's direction to make a plurality of different connecting block 3 of orientation match and form the rotary ladder, satisfy the demand, enlarge application scope, the practicality is stronger. Moreover, can set up a plurality of through-holes 7 at 5 inner walls equidistance of cylindrical spread groove, correspond the equidistance at 6 wall of cylindrical mosaic block and set up a plurality of spacing grooves 8 for connecting block 3 is after confirming the direction, and spacing groove 8, through-hole 7 and locating part 9 combined action are injectd the specific orientation of connecting block 3, prevent that it from rotating to other directions, bring inconvenience for the installer. Certainly, still can set mosaic block 6 to regular polygon prism, so, the installer not only can adjust the orientation of connecting block 3 in a flexible way, and polygon prism self also has certain limiting displacement moreover, and the effect is better, and the practicality is stronger.

Further, as shown in fig. 4 and 5, be provided with firm frame 11 on supporting footboard 2, firm frame 11 is fixed in the one side of supporting footboard 2 and keeping away from fixed part 4, firm frame 11 includes two dead levers 12, dead lever 12 is including two at least connecting rods 13 that connect gradually, as shown in fig. 6, the one end of connecting rod 13 is provided with joint hole 14, the other end of connecting rod 13 is provided with elastic bulge 15, adjacent connecting rod 13 imbeds joint hole 14 fixed connection through elastic bulge 15, two crisscross settings of dead lever 12 are on supporting footboard 2, the crosspoint of two dead levers 12 is located the center of supporting footboard 2, the both ends of dead lever 12 are fixed in the one corner of supporting footboard 2 through chucking knot 16 respectively.

In this embodiment, steady frame 11 forms the X type by two dead lever 12 cooperations, and the nodical central point that supports footboard 2 that is located of two dead lever 12 puts, and dead lever 12 is formed by two at least connecting rod 13 cooperations that connect gradually, and the one end of connecting rod 13 is provided with joint hole 14, and the other end of connecting rod is provided with elastic bulge 15, and two adjacent connecting rods pass through joint hole 14 and elastic bulge 15 cooperation and connect. When the size of the supporting pedal 2 changes, the installer can adjust the length of the fixing rod 12 to adapt to the size and the dimension of the supporting pedal 2, and the applicability is stronger.

In this embodiment, two ends of the fixing rod 12 are respectively located at four corners of the supporting pedal 2, two ends of the fixing rod 12 are provided with a fastening buckle 16, and the fastening buckle 16 can fasten and fix one corner corresponding to the supporting pedal 2 and one end of the fixing rod 12, so as to prevent the stabilizing frame 11 from falling off the surface of the supporting pedal 2. When the user tramples the support footboard 2, its pressure is concentrated on the center of support footboard 2 or near the center region more, and at this moment, this regional dead lever 12 can transmit the pressure that the support footboard 2 central region received to support footboard 2 all around, can make this support footboard 2 share partial pressure all around, and the atress of support footboard 2 is more even, avoids the condition that stress concentration appears on the support footboard 2 for the life of steel construction stair is longer. In other embodiments of the present invention, other devices may be used to fix the fixing rod 12, for example, a fixing clip is used to fixedly connect the fixing rod 12 and one corner of the supporting pedal 2.

In this embodiment, firm frame 11 can also promote the compressive strength of bracing piece, the central region that supports footboard 2 is easily to receive the coincidence of pressure region and two dead lever 12 nodical positions promptly, this nodical position can increase the thickness that supports footboard 12 central region, promotes its compressive strength, thereby the life of footboard 2 is supported in the extension, moreover, because firm frame 11 protrusion supports the upper surface of footboard 2, make this firm frame 11 can also play certain antiskid.

Further, as shown in fig. 7, an absorbing anti-skid layer 10 is disposed on one side of the supporting pedal 2 away from the fixing portion 4, and the absorbing anti-skid layer 10 is any one of a spandex anti-skid layer, a terylene anti-skid layer and a cotton-flax layer with anti-skid lines. In this embodiment, the skid resistant course 10 that absorbs water is laid on support footboard 2 surface, prevents that the user from slipping, improves steel construction stair safety in utilization, and moreover, skid resistant course 10 that absorbs water not only is anti-skidding, absorbs water moreover, has further guaranteed the antiskid effect under the humid environment such as rainy day, further improves safety in utilization.

In this embodiment, the skid resistant layer 10 that absorbs water is the cotton-flax layer that has anti-skidding line the utility model discloses an in other embodiments, the skid resistant layer 10 that absorbs water can also be spandex skid resistant layer or dacron skid resistant layer.

Further, in this embodiment, this anti-skidding line is the silica gel material, can prevent that the user from slipping, improves steel construction stair safety in utilization. The utility model discloses an in other embodiments, anti-skidding line can also be other materials, only need reach anti-skidding purpose can.

Further, as shown in fig. 1 and 8, a height increasing block 17 is arranged between the connecting blocks 3, one end of the height increasing block 17 is provided with a clamping block 18 adapted to the inner shape of the connecting groove 5, the other end of the height increasing block 17 is provided with a clamping groove 19 adapted to the appearance of the embedding block 6, the clamping block 18 is clamped into the connecting groove 5 of one connecting block 3, and the embedding block 6 of another adjacent connecting block 3 is embedded into the clamping groove 19. In the embodiment, the vertical distance between the adjacent connecting blocks 3 is increased due to the height of the heightening blocks 17, so that the effect of heightening the height between the two adjacent supporting pedals 2 is achieved, the applicable height range of the steel structure stair is increased, and the application range of the steel structure stair is increased; and increase the height between the adjacent support footboard 2, promote user's use comfort, put the condition appearance between two adjacent support footboards 2 of user's foot clip-in, reinforcing steel construction stair's suitability and practicality.

Of course, in the utility model discloses an in other embodiments, in order to prevent to appear increasing the condition that breaks away from between block 17 and the connecting block 3, not only can be increasing the setting spacing groove 8 of adaptability on the card piece 18 of block 17, the setting through-hole 7 of adaptability on joint groove 19, can set up the anti-drop layer at the internal face of card piece 18 wall and/or joint groove 19 moreover, this is the same with the setting of connecting groove 5 and mosaic block 6 on the connecting block 3, no longer explains here.

Further, as shown in fig. 1, two ends of the support frame 1 are respectively and fixedly connected with a first bearing block 21 placed on the ground 20 and a second bearing block 23 placed on the floor 22, a bearing groove 24 adapted to the appearance of the mosaic block 6 is arranged on the first bearing block 21, a bearing block 25 adapted to the inner shape of the connecting groove 5 is arranged on the second bearing block 23, the mosaic block 6 on the connecting block 3 at one end of the support frame 1 is embedded into the bearing groove 24, and the bearing block 25 is embedded into the connecting groove 5 on the connecting block 3 at the other end of the support frame 1.

In this embodiment, set up first bearing block 21 and second bearing block 23, the tip of first bearing block 20 and second bearing block 22 is all fixed on 27, has further increased the support intensity of steel construction stair, prevents that the condition that steel construction stair dropped or inclined when using from appearing, reinforcing safety in utilization.

In this embodiment, an anti-dropping layer may be further disposed on the wall surface of the bearing block 25 and/or the inner wall surface of the bearing groove 24, which is the same as the arrangement of the connecting groove 5 and the embedding block 6 on the connecting block 3, and is not described herein again.

Further, as shown in fig. 1, the support pedals 2 on the support frame 1 are hung on the wall 27 through the bearing frame 26, the bearing frame 26 is L-shaped, the stepped bearing frame 26 is matched with each support pedal 2 on the support frame 1 arranged in a stepped manner, and the bearing frame 26 is fixed on the wall 27 through the screws 28. In this embodiment, set up bearing frame 26 and be used for supporting support footboard 2, further increased steel construction stair's support intensity, prevent that steel construction stair from dropping or the condition of slope when using, reinforcing safety in utilization.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A novel adjustable steel structure stair is characterized by comprising a support frame (1) and at least two support pedals (2); the supporting frame (1) comprises connecting blocks (3) the number of which is the same as that of the supporting pedals (2), one end of each connecting block (3) is provided with a fixing part (4) and a connecting groove (5), the other end of each connecting block (3) is provided with an embedded block (6) matched with the connecting groove (5), and the embedded blocks (6) on the connecting blocks (3) are embedded into the connecting grooves (5) on the adjacent connecting blocks (3); the supporting pedals (2) are respectively and correspondingly fixed on the fixing parts (4) of the connecting blocks (3).

2. The novel adjustable steel structure stair of claim 1, wherein a through hole (7) is formed in a side wall of the connecting groove (5), a limiting groove (8) corresponding to the through hole (7) is formed in a side wall of the embedded block (6), a limiting part (9) is arranged in the through hole (7), and the limiting part (9) penetrates through the through hole (7) and the limiting groove (8) corresponding to the through hole (7) and is fixed.

3. Novel adjustable steel structure staircase according to claim 1 or 2, characterized in that the upper surface of the support tread (2) is provided with anti-slip threads.

4. The novel adjustable steel structure stair of claim 3, wherein an absorbing anti-skid layer (10) is arranged on one side, away from the fixing portion (4), of the supporting pedal (2), and the water absorbing anti-skid layer (10) is any one of a spandex anti-skid layer, a terylene anti-skid layer or a cotton-flax layer with anti-skid lines.

5. The novel adjustable steel structure stair of claim 3, characterized in that a stabilizing frame (11) is arranged on the supporting tread (2), and the stabilizing frame (11) is fixed on the upper surface of the supporting tread (2).

6. The novel adjustable steel structure stair is characterized in that the fixing frame (11) comprises two fixing rods (12), the fixing rods (12) comprise at least two connecting rods (13) connected in sequence, a clamping hole (14) is formed in one end of each connecting rod (13), an elastic bulge (15) is formed in the other end of each connecting rod (13), the adjacent connecting rods (13) are fixedly connected with the clamping holes (14) through the elastic bulges (15), the two fixing rods (12) are arranged on the supporting pedal (2) in a staggered mode, and two ends of each fixing rod (12) are fixed to the supporting pedal (2) through clamping buckles (16).

7. Novel adjustable steel structure staircase according to any of the claims 1, 2, 4-6, characterized in that the attachment groove (5) is cylindrical in shape.

8. The novel adjustable steel structure stair of claim 7, wherein the height increasing blocks (17) are arranged between the connecting blocks (3), one ends of the height increasing blocks (17) are provided with clamping blocks (18) matched with the connecting grooves (5), the other ends of the height increasing blocks (17) are provided with clamping grooves (19) matched with the embedding blocks (6), the clamping blocks (18) are clamped into the connecting grooves (5) of one connecting block (3), and the embedding blocks (6) of the other adjacent connecting block (3) are embedded into the clamping grooves (19).

9. The novel adjustable steel structure stair of claim 8, wherein two ends of the support frame (1) are respectively and fixedly connected with a first bearing block (21) placed on the ground (20) and a second bearing block (23) placed on a floor (22), a bearing groove (24) matched with the embedded block (6) is formed in the first bearing block (21), a bearing block (25) matched with the inner shape of the connecting groove (5) is formed in the second bearing block (23), the embedded block (6) on the connecting block (3) at one end of the support frame (1) is embedded into the bearing groove (24), and the bearing block (25) is embedded into the connecting groove (5) on the connecting block (3) at the other end of the support frame (1).

10. The novel adjustable steel structure stair of claim 9, characterized in that the supporting steps (2) on the supporting frame (1) are hung on the wall (27) through a bearing frame (26), the bearing frame (26) is adapted to the shape of each supporting step (2) on the supporting frame (1), and the bearing frame (26) is fixed on the wall (27) through screws (28).

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