A stable building staircase that is easy to assemble

Abstract

The present invention discloses a stable building staircase that is convenient to assemble. The building staircase includes stair treads and at least three supporting side beams arranged in parallel; the length direction of the supporting side beams is along the length direction of the stairs; the stair treads are detachably mounted on at least three supporting side beams through support blocks; the support blocks include mutually perpendicular horizontal receiving edges and vertical skirting edges, and the end of the support block opposite to the angle between the horizontal receiving edge and the vertical skirting edge is the mounting end; the mounting end of the support block is detachably mounted on the supporting side beams, and the stair treads are connected and mounted on the horizontal receiving edge of the support block. The building staircase is an assembled staircase structure, which can be assembled conveniently and quickly, and the disassembly and assembly can be completed conveniently and quickly, and the structure is simple, firm, stable, and safe.

Description

Technical Field

[0001] The invention relates to the technical field of building assembly, and in particular to a stable building staircase which can be easily assembled. Background Art

[0002] As a commonly used climbing structure, stairs have important applications in construction. They can be used as working platforms for construction surfaces at different heights, and can also be used as material transportation and pedestrian passages.

[0003] Since construction is temporary, the stairs built during construction are usually not used as permanent buildings. When the construction is completed, the stairs will be dismantled along with the building frame. Therefore, this type of building stairs generally adopts a temporary structure to make dismantling more convenient, faster, and cost-saving. Moreover, due to the complex environment of construction, it is necessary to ensure that this temporary building staircase has considerable safety and stability to ensure construction safety.

[0004] However, during the construction process, existing building stairs often fail to effectively balance the aspects of simple structure, low cost, stability and safety. Either the structure is simple, which is easy to disassemble and low cost, but the stability is extremely poor and there are great safety hazards; moreover, it cannot be built to a higher height, which limits the construction demand. In order to balance safety and make the construction height higher, other complicated structures are needed to assist, which increases the complexity of the structure, makes disassembly and assembly inconvenient, and increases the cost. At the same time, safety cannot be fully guaranteed. Summary of the invention

[0005] The purpose of the present invention is to provide a convenient and stable building staircase for the defects or shortcomings in the prior art. The building staircase is an assembled staircase structure, which can be assembled and disassembled conveniently and quickly, and has a simple and firm structure, strong stability and high safety.

[0006] The purpose of the present invention is achieved through the following technical solutions.

[0007] A conveniently assembled stable building staircase comprises stair treads and at least three parallel supporting side beams; the length direction of the supporting side beams is along the length direction of the staircase; the stair treads are detachably mounted on at least three supporting side beams through supporting blocks;

[0008] The support block includes a horizontal supporting edge and a vertical skirting edge which are perpendicular to each other, and the end of the support block opposite to the angle between the horizontal supporting edge and the vertical skirting edge is the mounting end; the mounting end of the support block is detachably mounted on the supporting side beam, and the stair tread is connected and mounted on the horizontal supporting edge of the support block.

[0009] In a preferred embodiment, the support side beam has a groove along the length direction, and coaxial screw holes are provided on both side edges of the groove; the mounting end of the support block is adapted to the groove, and a through hole corresponding to the screw hole is provided on the mounting end of the support block; the mounting end of the support block extends into the groove, and is installed on the support side beam by locking with bolts and nuts.

[0010] In a more preferred embodiment, the groove has an integrated snap-fit ​​stop block; the mounting end of the support block has a snap-fit ​​portion corresponding to the snap-fit ​​stop block; and the snap-fit ​​portion of the support block is snap-fitted to the snap-fit ​​stop block.

[0011] In a further preferred embodiment, the clamping surface of the clamping stop block has a clamping positioning notch which is concave inwardly in a direction away from the clamping portion of the support block; and the clamping portion of the support block has a clamping positioning ridge which is matched with the clamping positioning notch.

[0012] In a further preferred embodiment, the engaging surface of the engaging stopper is perpendicular to the tread surface of the stair tread.

[0013] In a preferred embodiment, the bottom surface of the stair tread has a connecting mounting edge; two connecting mounting edges form a group, and the gap between the two connecting mounting edges in the same group is adapted to the horizontal receiving edge of the support block;

[0014] Coaxial screw holes are provided on the two connecting and mounting edges of the same group; a through hole corresponding to the screw hole is provided on the horizontal supporting edge of the support block; the horizontal supporting edge of the support block extends into the gap between the two connecting and mounting edges of the same group and is locked by bolts and nuts.

[0015] In a preferred embodiment, the supporting side beam has a splicing plug on one end and a splicing socket on the other end; the splicing plug includes a splicing tongue formed by protruding and extending from both side edges of the supporting side beam, and the splicing socket includes a splicing interface formed by concave ends of both side edges of the supporting side beam; the splicing tongue can be adapted to be inserted into the splicing interface.

[0016] In a more preferred embodiment, a screw hole is provided on the plug-in tongue; a through hole corresponding to the screw hole is provided on the edge of the plug-in port; and the plug-in tongue and the plug-in port can be fastened by screws.

[0017] In a more preferred embodiment, the splicing plug further includes a splicing positioning column located between the plug tongues on both sides; the splicing socket further includes a splicing positioning hole located between the plug interfaces on both sides; the splicing positioning hole is adapted to the splicing positioning column.

[0018] In a more preferred embodiment, reinforcement connecting screw holes are provided at positions of the supporting side beams close to the splicing plug and the splicing socket.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0020] The building staircase of the present invention is an assembled staircase structure, and the stair treads, support blocks and support side beams used are all independent components, wherein the bottom of the stair treads has a connecting and installing edge arranged in groups, and the stair treads can be quickly positioned and assembled with the support blocks through the connecting and installing edges arranged in groups; and the support side beams have a groove, and the mounting end of the support block can be inserted into the groove for rapid positioning and assembly; at the same time, there is also a clamping block in the groove of the support side beam, and the clamping block has a clamping positioning notch, and the mounting end of the support block has a corresponding clamping part, and the clamping part has a clamping positioning ridge, and the positioning cooperation of the clamping positioning ridge and the clamping positioning notch can further realize the rapid and accurate positioning and assembly of the support block on the support side beam. Therefore, when assembling the building staircase, the stair treads, the support blocks and the support side beams can be quickly and accurately positioned and assembled with each other, and bolts and nuts are used to lock and fix, and the disassembly and assembly can be completed conveniently and quickly, and the structure is simple, firm, stable and safe.

[0021] Moreover, the clamping surface of the clamping block in the groove of the supporting side beam is perpendicular to the stair treads, so that the clamping connection between the clamping block and the clamping part of the support block is carried out in the horizontal direction. The support block will not easily fall out of the groove of the supporting side beam downward, making the support block more stable in the downward length direction on the supporting side beam, further enhancing the stability of the building stairs.

[0022] The two ends of the supporting side beam along the length direction have a splicing structure with an adaptive splicing plug and a splicing socket, so that the supporting side beam can be adaptively extended and spliced ​​along the length direction, so that the building staircase can be built with an adjustable height to meet different needs. Moreover, at the extended splicing of the supporting side beam, a reinforcement member that improves the stability of the extended splicing can be provided, which is conducive to improving the splicing stability.

[0023] In addition, the stair treads, support blocks and supporting side beams are all independent components, and the supporting side beams are segmented structures that can be spliced ​​and extended, so that the building stairs have a very low space occupancy rate during the transfer process after disassembly, making it convenient to transfer, and the assembly process can be carried out conveniently and quickly without the need for large lifting equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the conveniently assembled stable building staircase of the present invention in a specific embodiment;

[0025] Figure 2It is a schematic diagram of the overall side view structure of the conveniently assembled stable building staircase of the present invention in a specific embodiment;

[0026] Figure 3 It is a schematic structural diagram of a support block in a conveniently assembled stable building staircase of the present invention in a specific embodiment;

[0027] Figure 4 It is a schematic diagram of the partial structure of the supporting side beam in the conveniently assembled stable building staircase of the present invention in a specific embodiment;

[0028] Figure 5 It is a schematic structural diagram of the stair treads in the conveniently assembled stable building staircase of the present invention in a specific embodiment;

[0029] Figure 6 It is a structural schematic diagram of a splicing plug for supporting side beams in a stable building staircase for convenient assembly according to a specific embodiment of the present invention;

[0030] Figure 7 It is a structural schematic diagram of a splicing socket of a supporting side beam in a conveniently assembled stable building staircase of the present invention in a specific embodiment;

[0031] Figure 8 It is a schematic structural diagram of a reinforcement member in a conveniently assembled stable building staircase of the present invention in a specific embodiment;

[0032] The accompanying drawings are marked: 1-supporting side beam, 101-groove, 102-snapping block, 1021-snapping positioning notch, 103-screw hole I, 104-plug-in tongue, 1041-screw hole II, 105-plug interface, 1051-through hole I, 106-splicing positioning column, 107-splicing positioning hole, 108-reinforcement connecting screw hole, 2-stair tread, 200-tread, 201-connecting installation edge, 2011-screw hole III, 202-anti-slip edge, 3-support block, 301-horizontal supporting edge, 302-vertical skirting edge, 303-snapping part, 3031-snapping positioning ridge, 304-through hole II, 305-through hole III, 4-reinforcement, 401-connecting through hole. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments, but the protection scope and implementation mode of the present invention are not limited thereto. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0034] Furthermore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms "upper", "lower", "left", "right", etc. used herein in the specification of the present invention indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or an orientation or positional relationship in which the product of the invention is usually placed when in use, and are only used to distinguish descriptions, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the structure or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention, let alone an indication or implication of relative importance.

[0035] See also Figure 1 and Figure 2 As shown, the conveniently assembled stable building staircase of this embodiment comprises stair treads 2 and at least three parallel supporting side beams 1. The stair treads 2 and the supporting side beams 1 are made of steel, which has sufficient rigidity and load-bearing performance.

[0036] As the main supporting member of the stairs, the length direction of the supporting side beam 1 is along the length direction of the stairs; and the stair tread 2 is a direct load-bearing load-bearing member, the stair tread 2 is installed on the supporting side beam 1, and the tread 200 of the stair tread 2 is kept parallel to the horizontal plane. In the construction of traditional building stairs, the middle part of the stair tread 2 is usually not connected to a supporting structure, and the middle part is prone to being stepped on and dented and deformed, which is prone to safety hazards. Therefore, at least three supporting side beams 1 are arranged in parallel, and at least three supporting side beams 1 are evenly distributed along the left and right directions, which can provide a more balanced support for the stair tread 2, avoid the stair tread 2 from being dented and deformed, and improve safety. In this embodiment, three supporting side beams 1 are arranged in parallel and evenly distributed along the left and right directions.

[0037] Specifically, the stair tread 2 is detachably mounted on at least three of the supporting side beams 1 through the support block 3. The supporting side beam 1, the stair tread 2 and the support block 3 are independent components, and the overall stability of the building staircase is formed by assembly. Optionally, the material of the support block 3 is the same as that of the stair tread 2 and the supporting side beam 1, which is steel.

[0038] See also Figure 3 As shown, the support block 3 includes a horizontal receiving edge 301 and a vertical skirting edge 302 which are perpendicular to each other, and the end of the support block 3 opposite to the angle between the horizontal receiving edge 301 and the vertical skirting edge 302 is the mounting end. Optionally, the support block 3 may be a structure with a cross section similar to a right-angled trapezoid or a right-angled triangle, wherein two vertical adjacent edges are the horizontal receiving edge 301 and the vertical skirting edge 302, and the hypotenuse is the mounting end. In this embodiment, the support block 3 is a structure similar to a right-angled trapezoid.

[0039] See also Figure 4 As shown, the supporting side beam 1 has a groove 101 along the length direction, and coaxial screw holes Ⅰ103 are provided on both sides of the groove 101; the mounting end of the supporting block 3 is adapted to the groove 101, and a through hole Ⅱ304 corresponding to the screw hole Ⅰ103 is provided on the mounting end of the supporting block 3. During the assembly process of the building staircase, the mounting end of the supporting block 3 is inserted into and assembled into the groove 101, and the through hole Ⅱ304 on the supporting block 3 corresponds to the screw hole Ⅰ103 on the groove 101, and the supporting block 3 is locked and installed on the supporting side beam 1 by the combination of bolts and nuts. In this way, the supporting block 3 is detachably installed on the supporting side beam 1, and the stair tread 2 is connected and installed on the horizontal receiving edge 301 of the supporting block 3, completing the assembly of the overall building staircase, which is convenient and fast with good stability.

[0040] Furthermore, the groove 101 also has an integrated snap-in block 102, which is specifically an integrated structure blocked in the groove 101, and the mounting end of the support block 3 has a snap-in portion 303 corresponding to the snap-in block 102. During the assembly process of the building staircase, the mounting end of the support block 3 is inserted into and assembled in the groove 101, and the snap-in portion 303 of the support block 3 is snap-in with the snap-in block 102 during the inertial downward sliding process of the support block 3. After the snap-in portion 303 is snap-in with the snap-in block 102, the support block 3 stops sliding downward, so that the mounting position of the support block 3 on the supporting side beam 1 remains fixed, and the support block 3 will not easily fall out of the groove 101 of the supporting side beam 1 downward, thereby improving the downward stability of the support block 3 on the supporting side beam 1 along the length direction, and effectively improving the stability of the building staircase.

[0041] Moreover, preferably, the engaging surface of the engaging block 102 is perpendicular to the tread surface 200 of the stair tread 2. In this way, the engaging between the engaging block 102 and the engaging portion 303 of the support block 3 is performed in the horizontal direction, so that the downward stability of the support block 3 along the length direction on the support side beam 1 is higher, and the support block 3 is less likely to fall out of the groove 101 downward, further enhancing the stability of the building staircase.

[0042] In addition, the engaging surface of the engaging stopper 102 also has an engaging positioning notch 1021 which is concave in the direction away from the engaging portion 303 of the supporting block 3; Figure 3As shown, the clamping portion 303 of the support block 3 has a clamping positioning ridge 3031 adapted to the clamping positioning notch 1021. When the support block 3 is installed in the groove 101 of the support side beam 1, the clamping portion 303 and the clamping stopper 102 are clamped, and the clamping positioning ridge 3031 and the clamping positioning notch 1021 are mutually adapted to perform accurate positioning clamping, so that the support block 3 can be assembled on the groove 101 of the support side beam 1 more quickly and accurately, making the assembly of the building staircase more convenient and quick; and after the support block 3 is assembled with the groove 101 of the support side beam 1, the positioning cooperation between the clamping positioning notch 1021 and the clamping positioning ridge 3031 can further effectively prevent the support block 3 from shaking left and right, further improving the stability of the building staircase.

[0043] See also Figure 5 As shown, the bottom surface of the stair tread 2 has a connecting edge 201. Optionally, the connecting edge 201 is a structure integrally formed at the bottom of the tread 200. Two connecting edges 201 form a group, and the gap between the two connecting edges 201 in the same group is adapted to the horizontal receiving edge 301 of the support block 3. Moreover, coaxial screw holes III 2011 are provided on the two connecting edges 201 in the same group. Figure 3 As shown, the horizontal receiving edge 301 of the support block 3 is provided with a through hole III 305 corresponding to the screw hole III 2011. When assembling the building staircase, the horizontal receiving edge 301 of the support block 3 extends into the gap between the two connecting and installing edges 201 of the same group, and the through hole III 305 on the horizontal receiving edge 301 corresponds to the screw hole III 2011 on the connecting and installing edge 201. The horizontal receiving edge 301 of the support block 3 can be locked with the connecting and installing edge 201 of the stair tread 2 by the combination of bolts and nuts. In this way, the stair tread 2 and the support block 3 can be assembled conveniently, quickly and accurately, and the assembly stability is high.

[0044] Optionally, the tread 200 of the stair tread 2 is provided with an anti-skid edge 202 for preventing slipping, so as to improve the safety of the building staircase. Specifically, the anti-skid edge 202 is a structure protruding from the tread 200. When stepping on the anti-skid edge 202 of the tread 200 and climbing, the anti-skid edge 202 can prevent slipping by increasing friction. Optionally, the anti-skid edge 202 can be a plastic strip array embedded and fixedly connected to the tread 200 and protruding from the tread 200, or a strip array protruding from the tread 200.

[0045] In addition, the supporting side beams 1 can be extended and spliced ​​along the length direction. Specifically, the supporting side beams 1 have a splicing plug on one end and a splicing socket on the other end, and the splicing plug can be adapted to be plugged into the splicing socket to form a precise and stable splicing assembly. When it is necessary to extend the building staircase upward to increase the building height, the adjacent supporting side beams 1 are spliced ​​and extended through the splicing plugs and splicing sockets at the head and tail, and the step stairs 2 are continued to be installed on the supporting side beams 1 through the support blocks 3 on the extended and spliced ​​supporting side beams 1, so that the height of the building staircase can be increased.

[0046] See also Figure 6 As shown, the splicing plug includes a plug tongue 104, which is an integrated structure formed by protruding and extending along the length direction of the two side edges of the supporting side beam 1. Figure 7 As shown, the splicing socket includes an insertion port 105, which is a structure formed by the edge ends of both sides of the supporting side beam 1 being concave in the length direction, and the plug tongue 104 can be adapted to be inserted into the insertion port 105. Moreover, a screw hole II 1041 is provided on the plug tongue 104, and a through hole I 1051 corresponding to the screw hole II 1041 is provided on the edge of the plug port 105. When the supporting side beam 1 is extended and spliced, the plug tongue 104 is adapted to be inserted into the plug port 105, so that the assembly between the two adjacent sections of the supporting side beam 1 is completed, and the screw hole II 1041 on the plug tongue 104 corresponds to the screw hole II 1041 on the plug port 105. Then, the plug tongue 104 and the plug port 105 are locked with screws to ensure the stability of the splicing.

[0047] Furthermore, the splicing plug also includes a splicing positioning column 106, which is a column structure formed by the middle part of the splicing plug end of the supporting side beam 1 protruding and extending along the length direction, and is located between the plug tongues 104 on both sides; and the splicing socket also includes a splicing positioning hole 107, which is a hole structure formed by the middle part of the splicing socket end of the supporting side beam 1 being concave along the length direction, and is located between the plug ports 105 on both sides, and the splicing positioning hole 106 is adapted to the splicing positioning column 107. When the two adjacent sections of the supporting side beam 1 are spliced ​​and assembled, the splicing positioning column 106 is adapted to be inserted into the splicing positioning hole 107, so as to perform accurate positioning and docking assembly between the two sections of the supporting side beam 1.

[0048] Moreover, the positions of the supporting side beams 1 near the splicing plugs and the splicing sockets are all solid structures, so that the splicing parts between the two sections of the supporting side beams 1 spliced ​​by the plug-in assembly of the plug-in tongue 104 and the plug-in interface 105 and the docking assembly of the splicing positioning column 106 and the splicing positioning hole 107 have better rigidity, thereby ensuring the stability of the overall building staircase assembled by splicing.

[0049] In addition, optionally, after the two adjacent sections of the supporting side beams 1 are spliced, the splicing portion can be stabilized and reinforced by a reinforcement member 1. Figure 8 As shown, the reinforcement 4 can be made of steel with grooves, so that the splicing part can be covered to avoid dislocation and movement of the splicing part and improve the rigidity of the splicing part. Wherein, connecting through holes 401 are provided on the edges of both ends of the reinforcement 4; correspondingly, reinforcement connecting screw holes 108 are provided on the edge of the groove 101 of the support side beam 1, near the position of the splicing plug and the splicing socket. After the reinforcement 4 is assembled at the splicing part, the connecting through holes 401 correspond to the reinforcement connecting screw holes 108, and the two ends of the reinforcement 4 are respectively locked with the two adjacent sections of the support side beam 1 by screws to improve the stability of the splicing part.

[0050] In addition, as a preferred embodiment, a support rod supported on the ground can be connected to the bottom of the reinforcement 4 to further improve the rigidity and stability of the spliced ​​parts, thereby further improving the stability of the overall building staircase constructed by splicing.

[0051] In this way, the building staircase of the present invention is formed by assembling and splicing independent stair treads 2, support blocks 3 and support side beams 1, and the assembly and disassembly can be completed conveniently and quickly, and the structure is simple, firm, stable and safe. Moreover, the building height of the building staircase can be adjusted to meet different needs. In addition, the stair treads 2, support blocks 3 and support side beams 1 used in the building staircase are all independent components, and the support side beams 1 are segment structures that can be spliced, extended and lengthened, so that the space occupancy rate of the building staircase during the transfer process after disassembly is extremely low, which is convenient for transfer, and the assembly process can be carried out conveniently and quickly, and there is no need to borrow large-scale lifting equipment.

[0052] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, this specification does not describe all possible combinations of the technical features in the above-described embodiments. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. Moreover, the above-described embodiments only express several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, several variations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A stable building staircase that is easy to assemble, characterized in that: It comprises stair treads and at least three supporting side beams arranged in parallel; the length direction of the supporting side beams is along the length direction of the stairs; the stair treads are detachably mounted on at least three supporting side beams through supporting blocks; The support block comprises a horizontal receiving edge and a vertical skirting edge which are perpendicular to each other, and an end of the support block opposite to the angle between the horizontal receiving edge and the vertical skirting edge is a mounting end; the mounting end of the support block is detachably mounted on the supporting side beam, and the stair tread is connected and mounted on the horizontal receiving edge of the support block; The supporting side beam has a groove along the length direction, and coaxial screw holes are provided on both sides of the groove; the mounting end of the supporting block is adapted to the groove, and a through hole corresponding to the screw hole is provided on the mounting end of the supporting block; the mounting end of the supporting block extends into the groove and is locked and installed on the supporting side beam by bolts and nuts; The groove is provided with an integrated clamping block; the mounting end of the support block is provided with a clamping portion corresponding to the clamping block; the clamping portion of the support block is clamped with the clamping block; The clamping surface of the clamping stopper block is provided with a clamping positioning notch which is concave in the direction away from the clamping portion of the support block; the clamping portion of the support block is provided with a clamping positioning ridge which is matched with the clamping positioning notch; The bottom surface of the stair tread has a connecting mounting edge; two connecting mounting edges form a group, and the gap between the two connecting mounting edges in the same group is adapted to the horizontal receiving edge of the support block; Coaxial screw holes are provided on the two connecting and mounting edges of the same group; a through hole corresponding to the screw hole is provided on the horizontal supporting edge of the support block; the horizontal supporting edge of the support block extends into the gap between the two connecting and mounting edges of the same group and is locked by bolts and nuts.

2. A conveniently assembled stable building staircase according to claim 1, characterized in that: The clamping surface of the clamping stopper is perpendicular to the tread surface of the stair tread.

3. A conveniently assembled stable building staircase according to claim 1, characterized in that: The supporting side beam has a splicing plug on one end and a splicing socket on the other end; the splicing plug includes a splicing tongue formed by protruding and extending from the two side edges of the supporting side beam, and the splicing socket includes a splicing interface formed by concave ends of the two side edges of the supporting side beam; the splicing tongue can be adapted to be inserted into the splicing interface.

4. A conveniently assembled stable building staircase according to claim 3, characterized in that: The plug-in tongue is provided with a screw hole; the edge of the plug-in port is provided with a through hole corresponding to the screw hole; the plug-in tongue and the plug-in port can be locked by screws.

5. The conveniently assembled stable building staircase according to claim 3, characterized in that: The splicing plug further includes a splicing positioning column located between the plug tongues on both sides; the splicing socket further includes a splicing positioning hole located between the plug interfaces on both sides; the splicing positioning hole is adapted to the splicing positioning column.

6. The conveniently assembled stable building staircase according to claim 3, characterized in that: The support side beams are provided with reinforcement member connection screw holes at positions close to the splicing plug and the splicing socket.

Images