An assembled prefabricated staircase and its positioning structure

Abstract

The present invention relates to the technical field of building structures, specifically to an assembled prefabricated staircase and a positioning structure thereof, wherein the assembled prefabricated staircase comprises a prefabricated step and a staircase bottom beam structure, wherein the staircase bottom beam structure comprises a middle beam and two side beams, wherein the middle beam and the two side beams are fixedly installed between a lower staircase board and an upper staircase board, wherein the middle beam is arranged between the two side beams, wherein the prefabricated step comprises a bottom step, a top step and a plurality of middle steps, wherein a connection groove 1 is provided on the upper surface of the bottom step, wherein sliding plug-in mechanisms capable of connecting to the outer sides of the two side beams are respectively arranged at the two ends of the connection groove 1, wherein a top support mechanism capable of pushing the two sliding plug-in mechanisms to the outer sides of the two side beams is provided on the lower surface of the middle step, wherein a connection groove 2 is provided on the upper surface of the middle step, wherein sliding plug-in mechanisms are respectively arranged at the two ends of the connection groove 2, wherein a top support mechanism is provided on the lower surface of the top step. The problem that the prefabricated steps in the existing prefabricated staircase are relatively laborious to install is solved.

Description

Technical Field

[0001] The invention relates to the technical field of building structures, in particular to an assembled prefabricated staircase and a positioning structure thereof. Background Art

[0002] Stairs are used as components for vertical transportation between floors in buildings. They are used for transportation between floors and when there is a large height difference. Prefabricated stairs refer to stair components (stair sections, inclined beams, platform beams, steps, platform plates, etc.) that are prefabricated in component prefabrication plants, construction sites or other places. After reaching a certain strength, they are transported to the construction site for assembly. Therefore, they are called prefabricated assembled stairs. With the in-depth development of prefabricated buildings, prefabricated stairs are increasingly widely used in construction projects due to their advantages such as convenient construction, fast construction speed, easy quality control, and high degree of standardization.

[0003] In the prior art, for example, a Chinese patent with announcement number CN218091699U proposes an assembled prefabricated staircase, in which limiting grooves are provided at the front and rear upper parts of the first prefabricated staircase body and the second prefabricated staircase body, so that the limiting blocks can be inserted into the limiting grooves. At this time, the prefabricated stairs can be limited on the first prefabricated staircase body and the second prefabricated staircase body, and a positioning column is fixedly connected inside the limiting groove, so that the limiting block can be sleeved on the positioning column. At this time, the limiting block is better positioned in the limiting groove, and the prefabricated stairs are better positioned on the first prefabricated staircase body and the second prefabricated staircase body. However, when installing the prefabricated stairs, the prefabricated stairs need to be carried to the top of the first prefabricated staircase body or the second prefabricated staircase body, and then the limiting block at the bottom of the prefabricated stairs can be sleeved on the positioning column in the limiting groove, so that the prefabricated stairs slide downward along the limiting groove, and then other prefabricated stairs are installed in sequence according to the above method. This process of installing the prefabricated stairs is relatively laborious. Summary of the invention

[0004] The present invention provides an assembled prefabricated staircase and a positioning structure thereof, which solves the problem that the prefabricated steps in the existing prefabricated staircase are relatively laborious to install.

[0005] To achieve the above-mentioned object, the present invention provides an assembled prefabricated staircase, comprising prefabricated steps and a staircase bottom beam structure;

[0006] The staircase bottom beam structure comprises a middle beam and two side beams, wherein the middle beam and the two side beams are fixedly installed between the lower staircase board and the upper staircase board, and the middle beam is arranged between the two side beams;

[0007] The prefabricated step is fixedly installed between the two side beams and abuts against the upper surface of the middle beam;

[0008] The prefabricated steps include a bottom step, a top step and a plurality of middle steps;

[0009] A connecting groove 1 is provided on the upper surface of the bottom step, and sliding plug-in mechanisms capable of connecting to the outer sides of the two side beams are respectively provided at both ends of the connecting groove 1;

[0010] The lower surface of the middle step is provided with a supporting mechanism capable of pushing the two sliding plug-in mechanisms toward the outsides of the two side beams, and the upper surface of the middle step is provided with a second connecting groove, and the two ends of the second connecting groove are respectively provided with the sliding plug-in mechanisms;

[0011] The top supporting mechanism is provided on the lower surface of the top step.

[0012] Preferably, the edge of the upper surface of the lower staircase board is provided with a first mounting platform, and the edge of the upper surface of the upper staircase board is provided with a second mounting platform;

[0013] Two bottom filling beams are arranged on the lower surface of the bottom step, and two top filling beams are arranged on the rear side surface of the top step.

[0014] Preferably, baffles are respectively provided on the outer upper surfaces of the two side beams;

[0015] A plurality of connecting pipes are provided on opposite surfaces of the two baffles;

[0016] The left and right ends of the bottom step are respectively provided with a first card slot, the left and right ends of the middle step are respectively provided with a second card slot, and the left and right ends of the top step are respectively provided with a third card slot.

[0017] Preferably, the top end of the side beam is provided with a side-connected top beam, and the bottom end of the side beam is provided with a side-connected bottom beam;

[0018] The top end of the middle beam is provided with a middle connecting top beam, and the bottom end of the middle beam is provided with a middle connecting bottom beam;

[0019] The side connection top beam and the side connection bottom beam are respectively provided with a first positioning connection hole, and the middle connection top beam and the middle connection bottom beam are respectively provided with a second positioning connection hole.

[0020] Preferably, the sliding plug-in mechanism comprises a push plate, a fixing plate, a guide protective tube and a fixing pin;

[0021] The push plate is an arc-shaped plate, one end of the fixing pin 1 is fixedly connected to the inner side of the push plate, and the other end of the fixing pin 1 is sleeved in the guide protective tube 1;

[0022] The guide protection tube 1 is fixedly connected to the fixing plate 1, and the guide protection tube 1 passes through the fixing plate 1;

[0023] The two guide protection tubes 1 corresponding to the bottom step are respectively fixedly connected to the left and right side walls of the connecting groove 1, and the two guide protection tubes 1 respectively penetrate the left and right side walls of the connecting groove 1, and the two guide protection tubes 1 corresponding to the middle step are respectively fixedly connected to the left and right side walls of the connecting groove 2, and the two guide protection tubes 1 respectively penetrate the left and right side walls of the connecting groove 2;

[0024] A V-shaped spring plate is fixedly connected between the push plate and the fixing plate 1, a clearance hole is opened on the side of the spring plate, and the fixing pin 1 passes through the clearance hole.

[0025] Preferably, the supporting mechanism comprises a connecting support rod and two arc-shaped top plates, and two ends of the connecting support rod are fixedly connected to the inner side surfaces of the two top plates.

[0026] Preferably, a connection groove 3 is provided on the upper surface of the top step, and guide mechanisms are provided at both ends of the connection groove 3;

[0027] The guide mechanism comprises a second fixing plate and a second guide protective tube, wherein the second fixing plate is fixedly connected to the second guide protective tube, and the second guide protective tube passes through the second fixing plate;

[0028] The two guide protection tubes 2 respectively penetrate the left and right side walls of the connecting groove 3, and the two guide protection tubes 2 are respectively fixed to the left and right side walls of the connecting groove 3;

[0029] A fixing pin 2 is slidably arranged inside the second guide protection tube.

[0030] A positioning structure for installing the above-mentioned assembled prefabricated stairs, including a positioning plate and a positioning adjustment mechanism capable of adjusting the horizontal position and elevation of the side beam and the middle beam, wherein two positioning plates are provided, and the two positioning plates are respectively fixedly connected to the upper surfaces of the mounting platform one and the mounting platform two, and the positioning adjustment mechanism is arranged on the upper surfaces of the positioning plates.

[0031] Preferably, a plurality of sliding cavities 1 are provided in the positioning plate, a plurality of sliding holes 1 are opened on the upper surface of the positioning plate, and the sliding holes 1 are connected to the sliding cavities 1;

[0032] A plurality of guide rods are arranged around the first sliding hole.

[0033] Preferably, the positioning and adjusting mechanism comprises a lifting plate, a positioning rod, an adjusting slide plate 1 and an adjusting slide plate 2;

[0034] A plurality of lifting tubes are provided on the lower surface of the lifting plate, and the lifting tubes are sleeved outside the guide rods;

[0035] The first adjusting slide plate is fixedly connected to the lower end of the positioning rod, the second adjusting slide plate is sleeved on the middle part of the positioning rod, the positioning rod corresponding to the side beam is inserted into the first positioning connection hole, and the positioning rod corresponding to the middle beam is inserted into the second positioning connection hole;

[0036] The size of the adjusting slide plate 1 is smaller than the size of the sliding cavity 1, and the adjusting slide plate 1 slides in the sliding cavity 1;

[0037] A second sliding cavity is provided in the lifting plate, and a second sliding hole is provided on the upper surface of the lifting plate, wherein the second sliding hole is connected to the second sliding cavity;

[0038] The size of the second adjusting slide plate is smaller than the size of the second sliding cavity, and the second adjusting slide plate slides in the second sliding cavity;

[0039] The rod diameter of the positioning rod is smaller than the diameter of the first sliding hole and the second sliding hole;

[0040] An adjusting nut is fixedly connected to the upper surface of the second adjusting slide plate, and the adjusting nut is threadedly connected to the positioning rod.

[0041] The present invention has the following beneficial effects:

[0042] 1. When installing the bottom step, middle step and top step, they are installed from bottom to top in sequence. This is not only convenient and labor-saving, but also the prefabricated staircase is split into multiple units, which is convenient for transportation and hoisting;

[0043] 2. The two positioning plates are fixedly connected to the mounting platform 1 and the mounting platform 2 respectively through the corresponding connecting ribs, and the positioning rod is moved, so that the positioning rod drives the adjusting slide plate 1 and the adjusting slide plate 2 to move in the sliding cavity 1 and the sliding cavity 2 respectively, so that the plane position of the positioning rod can be adjusted, thereby adjusting the plane positions of the side connecting top beam and the side connecting bottom beam, and the middle connecting top beam and the middle connecting bottom beam;

[0044] 3. Turn the adjusting nut, the adjusting nut drives the adjusting slide plate 2 to move up and down along the axial direction of the positioning rod, and the adjusting slide plate 2 drives the lifting plate to move up and down, so that the elevation of the lifting plate can be adjusted, thereby adjusting the elevation of the side connecting top beam and the side connecting bottom beam, as well as the middle connecting top beam and the middle connecting bottom beam;

[0045] 4. By adjusting the plane position of the positioning rod and the elevation of the lifting plate, the spatial position of the side beam and the middle beam can be adjusted so that the spatial position of the side beam and the middle beam meets the design requirements, so as to facilitate the subsequent installation of prefabricated steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of the overall structure of an assembled prefabricated staircase according to the present invention;

[0047] Figure 2 It is a structural schematic diagram of a lower stair tread and an upper stair tread in an assembled prefabricated staircase according to the present invention;

[0048] Figure 3 It is a schematic diagram of the connection between the stair bottom beam structure and the lower stair slab and the upper stair slab in the assembled prefabricated staircase of the present invention;

[0049] Figure 4 for Figure 3 A magnified image of point A;

[0050] Figure 5 This is a schematic diagram of the structure of the bottom tread of an assembled prefabricated staircase according to the present invention;

[0051] Figure 6 It is a structural schematic diagram of a sliding plug-in mechanism in an assembled prefabricated staircase according to the present invention;

[0052] Figure 7 It is a structural schematic diagram of a middle step in an assembled prefabricated staircase according to the present invention;

[0053] Figure 8 It is a schematic diagram of the connection between the middle step and the top support mechanism in the assembled prefabricated staircase of the present invention;

[0054] Fig. 9 It is a structural schematic diagram of a top step in an assembled prefabricated staircase according to the present invention;

[0055] Fig.10 for Fig. 9 The enlarged view of point B in the figure;

[0056] Fig.11 It is a schematic diagram of the connection between the top step and the top support mechanism in the assembled prefabricated staircase described in the present invention;

[0057] Fig.12 It is a schematic diagram of the overall structure of a positioning structure according to the present invention;

[0058] Fig.13 It is a structural schematic diagram of a positioning plate and a positioning adjustment mechanism in a positioning structure described in the present invention;

[0059] Fig.14 The figure is a schematic diagram of the connection between the adjusting slide plate 2 and the lifting plate in a positioning structure described in the present invention.

[0060] In the figure: 1. staircase bottom beam structure; 11. side beam; 111. baffle; 112. side connecting top beam; 113. side connecting bottom beam; 114. positioning connection hole 1; 115. connecting pipe; 12. middle beam; 121. middle connecting top beam; 122. middle connecting bottom beam; 123. positioning connection hole 2; 2. prefabricated step; 21. bottom step; 211. slot 1; 212. connecting slot 1; 213. bottom filling beam; 22. middle step; 221. slot 2; 222. connecting slot 2; 23. top step; 231. slot 3; 232. connecting slot 3; 233. top filling beam; 3. lower stair board; 31. reinforcing beam 1; 32. mounting platform 1; 4. upper stair board; 41. adding Strong beam two; 42, mounting platform two; 5, sliding plug-in mechanism; 51, push plate; 52, spring plate; 521, give way hole; 53, fixed plate one; 54, guide protective tube one; 55, fixed pin one; 6, top support mechanism; 61, connecting support rod; 62, top plate; 7, fixed pin two; 8, guide mechanism; 81, fixed plate two; 82, guide protective tube two; 9, positioning plate; 91, connecting rib; 92, guide rod; 93, sliding cavity one; 94, sliding hole one; 100, positioning adjustment mechanism; 101, lifting plate; 102, lifting tube; 103, positioning rod; 104, adjusting nut; 105, adjusting slide plate one; 106, adjusting slide plate two; 107, sliding cavity two; 108, sliding hole two. DETAILED DESCRIPTION

[0061] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0062] The present invention provides an assembled prefabricated staircase, such as Figure 1 and Figure 3 As shown, it includes a prefabricated step 2 and a stair bottom beam structure 1, the stair bottom beam structure 1 includes a middle beam 12 and two side beams 11, the middle beam 12 and the two side beams 11 are fixedly installed between the lower stair slab 3 and the upper stair slab 4, the middle beam 12 is arranged between the two side beams 11, the prefabricated step 2 is fixedly installed between the two side beams 11, and is against the upper surface of the middle beam 12, the prefabricated step 2 includes a bottom step 21, a top step 23 and a plurality of middle steps 22, as shown in FIG. Figure 5 As shown, a connection groove 212 is provided on the upper surface of the bottom step 21, and sliding plug-in mechanisms 5 are provided at both ends of the connection groove 212, which can be connected to the outer sides of the two side beams 11. Figure 7 and Figure 8 As shown, the lower surface of the middle step 22 is provided with a supporting mechanism 6 capable of pushing the two sliding plug-in mechanisms 5 to the outside of the two side beams 11, and the upper surface of the middle step 22 is provided with a second connecting groove 222, and the two ends of the second connecting groove 222 are respectively provided with a sliding plug-in mechanism 5, as shown in FIG. Fig.11 As shown, a supporting mechanism 6 is provided on the lower surface of the top step 23 .

[0063] like Figure 2 As shown, a mounting platform 1 32 is provided at the edge of the upper surface of the lower stair plate 3 , and a mounting platform 2 42 is provided at the edge of the upper surface of the upper stair plate 4 .

[0064] like Figure 1 and Figure 2 As shown, a reinforcing beam 1 31 is provided on the lower surface of the mounting platform 1 32 , and a reinforcing beam 2 41 is provided on the lower surface of the mounting platform 2 42 .

[0065] The provision of reinforcing beam 1 31 and reinforcing beam 2 41 can increase the bending tensile strength of the lower stair slab 3 and the upper stair slab 4, thereby making the side beam 11 and the middle beam 12 more stably installed on the mounting platform 1 32 and the mounting platform 2 42.

[0066] like Figure 5 , Fig. 9 and Fig.11 As shown, two bottom filling beams 213 are provided on the lower surface of the bottom step 21 , and two top filling beams 233 are provided on the rear side surface of the top step 23 .

[0067] like Figure 3 and Figure 4 As shown, baffles 111 are respectively provided on the outer upper surfaces of the two side beams 11;

[0068] A plurality of connecting pipes 115 are disposed on opposite surfaces of the two baffles 111 .

[0069] like Figure 5 , Figure 7 and Fig. 9 As shown, the left and right ends of the bottom step 21 are respectively provided with a first card slot 211 , the left and right ends of the middle step 22 are respectively provided with a second card slot 221 , and the left and right ends of the top step 23 are respectively provided with a third card slot 231 .

[0070] like Figure 3 As shown, the top end of the side beam 11 is provided with a side connecting top beam 112 , and the bottom end of the side beam 11 is provided with a side connecting bottom beam 113 .

[0071] like Figure 3 As shown, a middle connecting top beam 121 is provided at the top end of the middle beam 12 , and a middle connecting bottom beam 122 is provided at the bottom end of the middle beam 12 .

[0072] like Figure 3 As shown, a first positioning connection hole 114 is respectively opened on the side connection top beam 112 and the side connection bottom beam 113 , and a second positioning connection hole 123 is respectively opened on the middle connection top beam 121 and the middle connection bottom beam 122 .

[0073] like Figure 5 and Figure 6As shown, the sliding plug-in mechanism 5 includes a push plate 51, a fixing plate 53, a guide protection tube 54 and a fixing pin 55;

[0074] The push plate 51 is an arc-shaped plate, one end of a fixing pin 55 is fixedly connected to the inner side of the push plate 51, and the other end of the fixing pin 55 is sleeved in a guide protective tube 54;

[0075] The guide protection tube 1 54 is fixedly connected to the fixing plate 1 53, and the guide protection tube 1 54 passes through the fixing plate 1 53;

[0076] The two guide guard tubes 54 corresponding to the bottom step 21 are respectively fixedly connected to the left and right side walls of the connecting groove 212, and the two guide guard tubes 54 respectively penetrate the left and right side walls of the connecting groove 212. The two guide guard tubes 54 corresponding to the middle step 22 are respectively fixedly connected to the left and right side walls of the connecting groove 222, and the two guide guard tubes 54 respectively penetrate the left and right side walls of the connecting groove 222.

[0077] The connecting tube 115 protects the baffle 111, and the guide protective tube 1 54 protects the left and right side walls of the connecting groove 1 212 and the connecting groove 2 222, preventing the fixing pin 1 55 from damaging the baffle 111 and the left and right side walls of the connecting groove 1 212 and the connecting groove 2 222.

[0078] like Figure 6 As shown, a V-shaped spring plate 52 is fixedly connected between the push plate 51 and the fixed plate 53 , and a clearance hole 521 is opened on the side of the spring plate 52 , and the fixing pin 55 passes through the clearance hole 521 .

[0079] The setting of the spring plate 52 can ensure that the fixing pin 55 is in a retracted state before the prefabricated step 2 is installed, thereby preventing the fixing pin 55 from affecting the placement of the prefabricated step 2.

[0080] like Figure 8 As shown, the supporting mechanism 6 includes a connecting support rod 61 and two arc-shaped top plates 62 , and the two ends of the connecting support rod 61 are fixedly connected to the inner side surfaces of the two top plates 62 .

[0081] like Fig. 9 As shown, a third connecting groove 232 is formed on the upper surface of the top step 23 , and guide mechanisms 8 are provided at both ends of the third connecting groove 232 .

[0082] like Fig. 9 and Fig.10 As shown, the guide mechanism 8 includes a second fixing plate 81 and a second guiding protective tube 82. The second fixing plate 81 is fixedly connected to the second guiding protective tube 82, and the second guiding protective tube 82 passes through the second fixing plate 81.

[0083] The two second guide protection tubes 82 respectively penetrate the left and right side walls of the third connection slot 232, and the two second guide protection tubes 82 are respectively fixed to the left and right side walls of the third connection slot 232;

[0084] A fixing pin 7 is slidably disposed inside the guide protection tube 82 .

[0085] The second guide protection tube 82 protects the left and right side walls of the third connecting groove 232 , thereby preventing the second fixing pin 7 from damaging the baffle 111 and the left and right side walls of the third connecting groove 232 .

[0086] A positioning structure for installing the above-mentioned prefabricated staircase, such as Fig.12 As shown, it includes a positioning plate 9 and a positioning adjustment mechanism 100 capable of adjusting the horizontal position and elevation of the side beam 11 and the middle beam 12. Two positioning plates 9 are provided, and the two positioning plates 9 are respectively fixedly connected to the upper surfaces of the mounting platform 1 32 and the mounting platform 2 42, and the positioning adjustment mechanism 100 is arranged on the upper surface of the positioning plate 9.

[0087] like Fig.12 As shown, a plurality of connecting ribs 91 are provided on the lower surface of the positioning plate 9 .

[0088] like Fig.13 As shown, a plurality of sliding cavities 93 are provided in the positioning plate 9 , and a plurality of sliding holes 94 are opened on the upper surface of the positioning plate 9 , and the sliding holes 94 are connected to the sliding cavities 93 .

[0089] like Fig.13 As shown, a plurality of guide rods 92 are provided around the sliding hole 94 , and the guide rods 92 are fixedly connected to the upper surface of the positioning plate 9 .

[0090] like Fig.13 and Fig.14 As shown, the positioning and adjusting mechanism 100 includes a lifting plate 101, a positioning rod 103, an adjusting slide plate 1 105 and an adjusting slide plate 2 106;

[0091] A plurality of lifting tubes 102 are provided on the lower surface of the lifting plate 101, and the lifting tubes 102 are sleeved outside the guide rod 92;

[0092] The adjusting slide plate 105 is fixedly connected to the lower end of the positioning rod 103, the adjusting slide plate 106 is sleeved on the middle part of the positioning rod 103, the positioning rod 103 corresponding to the side beam 11 is inserted into the positioning connection hole 114, and the positioning rod 103 corresponding to the middle beam 12 is inserted into the positioning connection hole 2 123;

[0093] The size of the adjusting slide plate 105 is smaller than the size of the sliding cavity 1 93, and the adjusting slide plate 105 slides in the sliding cavity 1 93;

[0094] A second sliding cavity 107 is provided in the lifting plate 101, and a second sliding hole 108 is provided on the upper surface of the lifting plate 101, and the second sliding hole 108 is connected to the second sliding cavity 107;

[0095] The size of the second adjustment slide plate 106 is smaller than the size of the second slide cavity 107, and the second adjustment slide plate 106 slides in the second slide cavity 107;

[0096] The rod diameter of the positioning rod 103 is smaller than the diameters of the first sliding hole 94 and the second sliding hole 108;

[0097] An adjusting nut 104 is fixedly connected to the upper surface of the adjusting slide plate 106 , and the adjusting nut 104 is threadedly connected to the positioning rod 103 .

[0098] According to the present invention, in the process of manufacturing the lower stair tread 3 and the upper stair tread 4, the two positioning plates 9 are respectively fixedly connected to the mounting platform 1 32 and the mounting platform 2 42 through the corresponding connecting ribs 91. After the lower stair tread 3 and the upper stair tread 4 are manufactured, the positioning rod 103 is toggled, and the positioning rod 103 drives the adjusting slide plate 1 105 and the adjusting slide plate 2 106 to move in the sliding cavity 1 93 and the sliding cavity 2 107 respectively, so that the plane position of the positioning rod 103 can be adjusted, thereby adjusting the plane position of the side connecting top beam 112 and the side connecting bottom beam 113 and the middle connecting top beam 121 and the middle connecting bottom beam 122. The adjusting nut 104 is then rotated, and the adjusting nut 104 drives the adjusting slide plate 106 to move up and down along the axial direction of the positioning rod 103, and the adjusting slide plate 106 drives the lifting plate 101 to move up and down, so that the elevation of the lifting plate 101 can be adjusted, thereby adjusting the elevation of the side connecting top beam 112 and the side connecting bottom beam 113 and the middle connecting top beam 121 and the middle connecting bottom beam 122. Through the above operation, the spatial position of the side beam 11 and the middle beam 12 can be adjusted, so that the spatial position of the side beam 11 and the middle beam 12 meets the design requirements, so as to facilitate the subsequent installation of the prefabricated step 2;

[0099] After the plane position of the positioning rod 103 and the elevation adjustment of the lifting plate 101 are completed, the two side beams 11 and the middle beam 12 are installed, and the two side beams 11 are placed between the lower stair slab 3 and the upper stair slab 4, so that the positioning rod 103 corresponding to the side beam 11 is inserted into the positioning connection hole 114, and the positioning rod 103 corresponding to the middle beam 12 is inserted into the positioning connection hole 2 123, and then cement mortar or concrete is poured into the positioning connection hole 114 and the positioning connection hole 2 123 respectively, so that the side connecting top beam 112 and the side connecting bottom beam 113 as well as the middle connecting top beam 121 and the middle connecting bottom beam 122 are fixed to the corresponding positioning rod 103, and then the bottom step 21 is placed at the bottom of the stair bottom beam structure 1, the baffle 111 is snapped into the slot 1 211, and the bottom step 21 is fixed to the bottom of the stair bottom beam structure 1. The filling beam 213 is embedded between the side connecting bottom beam 113 and the middle connecting bottom beam 122. The slot 1 211 cooperates with the baffle 111 to prevent the bottom step 21 from moving left and right, thereby improving the stability of the top step 23. The bottom filling beam 213 can fill the gap between the side connecting bottom beam 113 and the middle connecting bottom beam 122, and can further improve the stability of the side connecting bottom beam 113 and the middle connecting bottom beam 122. Subsequently, multiple middle steps 22 are installed from bottom to top, and the top support mechanism 6 on the lower surface of the first middle step 22 is embedded in the connecting slot 1 212, and the baffle 111 is inserted into the slot 221. The slot 221 cooperates with the baffle 111 to prevent the middle step 22 from moving left and right, further improving the stability of the middle step 22, and the top plate 62 is moved to the top. When the top plate 62 moves downward, it abuts against the push plate 51. Since the push plate 51 and the top plate 62 are both arc-shaped plates, the two cooperate with each other to have a guiding effect. In this way, the top plate 62 moves downward to push the push plate 51 in the direction of the baffle 111, and the baffle 111 drives the fixing pin 1 55 to move in the direction of the baffle 111, the spring plate 52 is compressed, and the fixing pin 1 55 is inserted into the connecting pipe 115, so that the bottom step 21 is fixed between the two side beams 11, and then the second middle step 22 is placed, and the supporting mechanism 6 on the lower surface of the second middle step 22 is embedded in the connecting groove 222 on the upper surface of the first middle step 22. When the top plate 62 moves downward, it abuts against the push plate 51. The top plate 62 moves downward to push the push plate 51 in the direction of the baffle 111, and the baffle 11 1 drives the fixing pin 1 55 to move toward the baffle 111, and inserts the fixing pin 1 55 into the connecting pipe 115, so that the first middle step 22 is fixed between the two side beams 11, and then the other middle steps 22 are installed in sequence according to the above method, and finally, the top step 23 is installed, the baffle 111 is inserted into the clamping groove 3 231, and the top filling beam 233 is embedded between the side connecting top beam 112 and the middle connecting top beam 121. The clamping groove 3 231 cooperates with the baffle 111 to prevent the top step 23 from moving left and right, thereby improving the stability of the top step 23. The top filling beam 233 can fill the gap between the side connecting top beam 112 and the middle connecting top beam 121, and can further improve the stability of the side connecting top beam 112 and the middle connecting top beam 121.The top support mechanism 6 on the lower surface of the top step 23 is embedded in the second connection groove 222 on the upper surface of the last middle step 22. The top plate 62 moves downward and abuts against the push plate 51. The top plate 62 moves downward to push the push plate 51 in the direction of the baffle 111. The baffle 111 drives the fixing pin 1 55 to move in the direction of the baffle 111, and the fixing pin 1 55 is inserted into the connecting pipe 115, so that the last middle step 22 is fixed between the two side beams 11, and then the fixing pin 2 7 is inserted into the second guide guard tube 82, and the fixing pin 2 7 is inserted into the corresponding connecting pipe 115, and then concrete or cement mortar is poured into the third connection groove 232, so that the top step 23 is fixed between the two side beams 11, and the installation of the prefabricated staircase is completed. In addition, when installing the prefabricated step 2, it is installed from bottom to top in sequence, which is convenient and labor-saving. Moreover, the prefabricated staircase is split into multiple units, which is convenient for transportation and hoisting.

[0100] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An assembled prefabricated staircase, characterized in that: It includes a prefabricated step (2) and a staircase bottom beam structure (1); The staircase bottom beam structure (1) comprises a middle beam (12) and two side beams (11), wherein the middle beam (12) and the two side beams (11) are both fixedly installed between a lower staircase board (3) and an upper staircase board (4), and the middle beam (12) is arranged between the two side beams (11); The prefabricated step (2) is fixedly installed between the two side beams (11) and abuts against the upper surface of the middle beam (12); The prefabricated step (2) comprises a bottom step (21), a top step (23) and a plurality of middle steps (22); A connecting groove (212) is provided on the upper surface of the bottom step (21), and sliding plug-in mechanisms (5) capable of connecting to the outer sides of the two side beams (11) are respectively provided at both ends of the connecting groove (212); The lower surface of the middle step (22) is provided with a supporting mechanism (6) capable of pushing the two sliding plug-in mechanisms (5) toward the outside of the two side beams (11); the upper surface of the middle step (22) is provided with a second connecting groove (222); the sliding plug-in mechanisms (5) are respectively provided in the two ends of the second connecting groove (222); The top support mechanism (6) is provided on the lower surface of the top step (23); The sliding plug-in mechanism (5) comprises a push plate (51), a fixing plate (53), a guide protective tube (54) and a fixing pin (55); The push plate (51) is an arc-shaped plate, one end of the fixing pin (55) is fixedly connected to the inner side of the push plate (51), and the other end of the fixing pin (55) is sleeved in the guide protective tube (54); The guide protective tube 1 (54) is fixedly connected to the fixing plate 1 (53), and the guide protective tube 1 (54) passes through the fixing plate 1 (53); The two guide protection tubes (54) corresponding to the bottom step (21) are respectively fixedly connected to the left and right side walls of the connecting groove (212), and the two guide protection tubes (54) respectively penetrate the left and right side walls of the connecting groove (212); the two guide protection tubes (54) corresponding to the middle step (22) are respectively fixedly connected to the left and right side walls of the connecting groove (222), and the two guide protection tubes (54) respectively penetrate the left and right side walls of the connecting groove (222); A V-shaped spring plate (52) is fixedly connected between the push plate (51) and the fixing plate 1 (53), a clearance hole (521) is opened on the side of the spring plate (52), and the fixing pin 1 (55) passes through the clearance hole (521); The supporting mechanism (6) comprises a connecting support rod (61) and two arc-shaped top plates (62), and the two ends of the connecting support rod (61) are fixedly connected to the inner side surfaces of the two top plates (62).

2. The prefabricated staircase according to claim 1, characterized in that: The edge of the upper surface of the lower staircase board (3) is provided with a first mounting platform (32), and the edge of the upper surface of the upper staircase board (4) is provided with a second mounting platform (42); Two bottom filling beams (213) are provided on the lower surface of the bottom step (21), and two top filling beams (233) are provided on the rear side surface of the top step (23).

3. The prefabricated staircase according to claim 2, characterized in that: The outer upper surfaces of the two side beams (11) are respectively provided with baffles (111); A plurality of connecting pipes (115) are provided on opposite surfaces of the two baffles (111); The left and right ends of the bottom step (21) are respectively provided with a first clamping groove (211), the left and right ends of the middle step (22) are respectively provided with a second clamping groove (221), and the left and right ends of the top step (23) are respectively provided with a third clamping groove (231).

4. The prefabricated staircase according to claim 3, characterized in that: The top end of the side beam (11) is provided with a side-connected top beam (112), and the bottom end of the side beam (11) is provided with a side-connected bottom beam (113); A middle connecting top beam (121) is provided at the top end of the middle beam (12), and a middle connecting bottom beam (122) is provided at the bottom end of the middle beam (12); The side connection top beam (112) and the side connection bottom beam (113) are respectively provided with a first positioning connection hole (114), and the middle connection top beam (121) and the middle connection bottom beam (122) are respectively provided with a second positioning connection hole (123).

5. The prefabricated staircase according to claim 4, characterized in that: A third connecting groove (232) is provided on the upper surface of the top step (23), and guide mechanisms (8) are provided at both ends of the third connecting groove (232); The guide mechanism (8) comprises a second fixing plate (81) and a second guide protective tube (82), wherein the second fixing plate (81) is fixedly connected to the second guide protective tube (82), and the second guide protective tube (82) passes through the second fixing plate (81); The two guide protection tubes (82) respectively penetrate the left and right side walls of the connection groove (232), and the two guide protection tubes (82) are respectively fixed to the left and right side walls of the connection groove (232); A second fixing pin (7) is slidably disposed inside the second guide protection tube (82).

6. A positioning structure for installing the assembled prefabricated staircase according to any one of claims 4 to 5, characterized in that: It comprises a positioning plate (9) and a positioning adjustment mechanism (100) capable of adjusting the horizontal position and elevation of the side beam (11) and the middle beam (12), wherein two positioning plates (9) are provided, and the two positioning plates (9) are respectively fixedly connected to the upper surface of the first mounting platform (32) and the second mounting platform (42), and the positioning adjustment mechanism (100) is arranged on the upper surface of the positioning plates (9); The positioning plate (9) is provided with a plurality of sliding cavities (93) therein, and the upper surface of the positioning plate (9) is provided with a plurality of sliding holes (94), wherein the sliding holes (94) are connected to the sliding cavities (93); A plurality of guide rods (92) are provided around the sliding hole 1 (94); The positioning and adjusting mechanism (100) comprises a lifting plate (101), a positioning rod (103), an adjusting slide plate 1 (105) and an adjusting slide plate 2 (106); The lower surface of the lifting plate (101) is provided with a plurality of lifting tubes (102), and the lifting tubes (102) are sleeved outside the guide rod (92); The first adjusting slide plate (105) is fixedly connected to the lower end of the positioning rod (103), the second adjusting slide plate (106) is sleeved on the middle part of the positioning rod (103), the positioning rod (103) corresponding to the side beam (11) is inserted into the first positioning connection hole (114), and the positioning rod (103) corresponding to the middle beam (12) is inserted into the second positioning connection hole (123); The size of the adjusting slide plate 1 (105) is smaller than the size of the sliding cavity 1 (93), and the adjusting slide plate 1 (105) slides in the sliding cavity 1 (93); A second sliding cavity (107) is provided in the lifting plate (101), and a second sliding hole (108) is provided on the upper surface of the lifting plate (101), wherein the second sliding hole (108) is connected to the second sliding cavity (107); The size of the second adjusting slide plate (106) is smaller than the size of the second sliding cavity (107), and the second adjusting slide plate (106) slides in the second sliding cavity (107); The rod diameter of the positioning rod (103) is smaller than the diameters of the first sliding hole (94) and the second sliding hole (108); An adjusting nut (104) is fixedly connected to the upper surface of the second adjusting slide plate (106), and the adjusting nut (104) is threadedly connected to the positioning rod (103).

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