Fabricated recycled concrete prefabricated stair structure

Abstract

The utility model relates to the technical field of prefabricated stairs, in particular to an assembly type recycled concrete prefabricated stair structure, which comprises an L-shaped stair plate, a reinforcing support plate and a top plate, the reinforcing support plate is fixed at the right upper end of the L-shaped stair plate, and the top plate is arranged above the reinforcing support plate; butt-joint openings are formed in the left sides and the right sides of the lower ends of the L-shaped stair plates and the top plates, main positioning inserting grooves and main threaded grooves which communicate with the butt-joint openings are formed in the right sides of the L-shaped stair plates and the top plates, butt-joint blocks are fixed to the left sides and the right sides of the upper ends of the reinforcing supporting plates, and the butt-joint blocks are matched with the butt-joint openings; due to the fact that the number of the used screws is relatively small, convenience of assembly is effectively guaranteed, and neither the first threaded reinforcing rod nor the second threaded reinforcing rod is located on the treading face of the L-shaped stair plate, flatness and attractiveness of the treading face of the whole stair structure can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to prefabricated stair technology field especially is involved in a kind of assembled recycled concrete prefabricated stair structure. BACKGROUND

[0002] In modern architecture, prefabricated concrete stair component is a kind of main building material, prefabricated concrete stair component is mainly made in advance in factory, i.e. make the stair board piece that can be assembled in advance, production efficiency is high, quality is good, and it has the advantage of saving resources by using recycled concrete to make;

[0003] But in the prior art, when the complete stair structure is assembled by stair board piece, the assembly of each stair board piece often uses a large number of screws to fix, since the number of screws used is large, the assembly process is not fast and convenient, and the nuts on a large number of screws are exposed on the tread surface of the stair board piece, causing the tread surface of the entire stair structure to be not flat and beautiful. SUMMARY

[0004] The utility model provides a kind of assembled recycled concrete prefabricated stair structure, it is beneficial to the assembly stair structure of convenient and fast, and it is beneficial to guarantee the flatness and the aesthetic property of the tread surface of entire stair structure.

[0005] In order to solve the problems in the prior art, the utility model discloses an assembled recycled concrete prefabricated stair structure, which comprises an L-shaped stair board piece, a reinforcing plate and a top plate, the reinforcing plate is fixed to the upper right end of the L-shaped stair board piece, and the top plate is arranged above the reinforcing plate.

[0006] The left and right sides of the lower end of the L-shaped stair board piece and the top plate are both provided with a butt joint, and the right side of the L-shaped stair board piece and the top plate are both provided with a main positioning slot and a main thread groove which are in communication with the butt joint, the left and right sides of the upper end of the reinforcing plate are both fixed with a butt block, the butt block is matched with the butt joint, a vice positioning slot which is in communication with the left and right sides is formed in the inside lower end of the butt block, a fixing plate is arranged at the right side of the reinforcing plate, a positioning insert plate is fixed to the left side of the fixing plate, and the positioning insert plate is butted into the main positioning slot and the vice positioning slot.

[0007] A anti-dropping limiting component is arranged at the lower left end of the fixing plate.

[0008] A thread positioning hole which is in communication with the left and right sides is formed in the fixing plate, a first thread reinforcing rod is threadedly connected in the thread positioning hole, a vice thread groove which is in communication with the left and right sides is formed in the inside upper end of the butt block, the first thread reinforcing rod is threadedly connected with the main thread groove and the vice thread groove, a thread reinforcing hole is formed in the middle part of the lower end of the positioning insert plate, the L-shaped stair board piece, the top plate and the reinforcing plate, and a second thread reinforcing rod is threadedly connected in the thread reinforcing hole.

[0009] Further, the L-shaped stair plate member is fixed with a reinforcing inclined plate between the reinforcing support plate.

[0010] Further, the anti-falling limiting assembly comprises a limiting block, an anti-falling clamping block, a pull rod, lifting blocks, a return spring and a pull plate.

[0011] Further, the limiting block is provided with an anti-falling clamping groove at the lower end, the anti-falling clamping block is clamped in the anti-falling clamping groove, and the right side surface of the anti-falling clamping block is inclined.

[0012] Further, the bottom of the limiting groove is provided with a contraction groove, the pull rod is fixed at the lower end of the limiting block and extends into the contraction groove, the lifting blocks are both fixed at the two sides of the pull rod, the return springs are both connected to the lower ends of the lifting blocks, and the lower ends of the return springs are connected to the bottom end of the contraction groove.

[0013] Further, the pull rod slides through the lower surface of the reinforcing support plate, and the pull plate is fixed at the lower end of the pull rod.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] 1. By inserting the butt joint block into the corresponding butt joint interface, and then inserting the positioning plug plate into the main positioning plug slot and the auxiliary positioning plug slot, the plurality of L-shaped stair plate members can be quickly pre-assembled, the top plate can be quickly and conveniently pre-installed, the L-shaped stair plate member and the top plate are supported by the reinforcing support plate, and the support stability after assembly is improved.

[0016] 2. By inserting the limiting block into the limiting groove and clamping the anti-falling clamping block into the anti-falling clamping groove, the positioning plug plate is prevented from being accidentally removed from the main positioning plug slot and the auxiliary positioning plug slot, the L-shaped stair plate member and the top plate are prevented from accidentally slipping and falling during assembly, and the assembly safety is improved.

[0017] 3. By threadedly connecting the first threaded reinforcing rod with the threaded positioning hole, the main threaded slot and the auxiliary threaded slot, and threadedly connecting the second threaded reinforcing rod with the threaded reinforcing hole, the stability of the L-shaped stair plate member and the top plate after assembly is ensured, the firmness of the stair structure after assembly is ensured, and the flatness and the appearance of the tread surface of the entire stair structure are ensured due to the relatively small number of screw rods and the fact that the first threaded reinforcing rod and the second threaded reinforcing rod are not on the tread surface of the L-shaped stair plate member. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall external structure of the present application.

[0019] Figure 2 It is the whole internal structure schematic view of the utility model;

[0020] Figure 3 It is the A local enlarged structure schematic view of the utility model;

[0021] Figure 4 It is the B local enlarged structure schematic view of the utility model;

[0022] Figure 5 It is the C local enlarged structure schematic view of the utility model;

[0023] Figure 6 It is the whole explosion structure schematic view of the utility model;

[0024] Figure 7 It is the whole assembly internal structure schematic view of the utility model;

[0025] Figure 8 It is the whole assembly external structure schematic view of the utility model.

[0026] Figures 1-8 Middle: L-shaped stair plate piece 1, reinforcing support plate 2, reinforcing inclined plate 3, top plate 4, butt joint 5, fixed plate 6, butt joint block 7, main positioning slot 8, main thread groove 9, vice positioning slot 10, vice thread groove 11, threaded positioning hole 12, positioning insert plate 13, first threaded reinforcing rod 14, threaded reinforcing hole 15, second threaded reinforcing rod 16, limiting block 17, limiting groove 18, contraction groove 19, anti-loose block 20, anti-loose block 21, pull rod 22, lifting block 23, return spring 24, pull plate 25. Specific implementation

[0027] An assembled recycled concrete prefabricated stair structure:

[0028] As Figures 1-8 shown, in the embodiment, including L-shaped stair plate piece 1, reinforcing support plate 2 and top plate 4, the reinforcing support plate 2 is fixed on the right upper end of L-shaped stair plate piece 1, the top plate 4 is arranged above the reinforcing support plate 2, the left and right sides of the lower end of L-shaped stair plate piece 1 and top plate 4 are all provided with butt joint 5, and the right side of L-shaped stair plate piece 1 and top plate 4 is all provided with main positioning slot 8 and main thread groove 9 communicated with butt joint 5, the left and right sides of the upper end of reinforcing support plate 2 are all fixed with butt joint block 7, the butt joint block 7 is matched with butt joint 5, the inside lower end of butt joint block 7 is provided with left and right through vice positioning slot 10, the right side of reinforcing support plate 2 is provided with fixed plate 6, the left side of fixed plate 6 is fixed with positioning insert plate 13, the positioning insert plate 13 is inserted in main positioning slot 8 and vice positioning slot 10.

[0029] When the complete stair structure is assembled by the plurality of L-shaped stair plate pieces 1, and the top plate 4 is installed on the uppermost L-shaped stair plate piece 1, by inserting the butt joint block 7 into the corresponding butt joint 5, and then inserting the positioning plug plate 13 into the main positioning plug slot 8 and the auxiliary positioning plug slot 10, it is beneficial to quickly pre-assemble the plurality of L-shaped stair plate pieces 1, and it is beneficial to quickly and conveniently pre-install the top plate 4, and by supporting the L-shaped stair plate piece 1 and the top plate 4 through the reinforcing support plate 2, it is beneficial to improve the support stability after assembly.

[0030] As shown in Figure 1 , 8 , in the embodiment, the L-shaped stair plate piece 1 is fixed with the reinforcing inclined plate 3 between the reinforcing support plate 2.

[0031] By arranging the reinforcing inclined plate 3 between the reinforcing support plate 2 and the L-shaped stair plate piece 1, it is beneficial to better improve the support stability of the reinforcing support plate 2, and thus the support stability of the entire stair structure after assembly can be better improved.

[0032] As shown in Figures 2-7 , in the embodiment, the left lower end of the fixed plate 6 is provided with an anti-falling limiting assembly, the anti-falling limiting assembly comprises a limiting block 17, an anti-falling clamping block 21, a pull rod 22, a lifting block 23, a return spring 24 and a pull plate 25, the limiting block 17 is fixed to the left lower end of the fixed plate 6, the right side of the reinforcing support plate 2 is provided with a limiting slot 18, the limiting block 17 is butt jointed with the limiting slot 18, the lower end of the limiting block 17 is provided with an anti-falling clamping groove 20, the anti-falling clamping block 21 is clamped in the anti-falling clamping groove 20, the right side surface of the anti-falling clamping block 21 is inclined, the bottom of the limiting slot 18 is provided with a contraction slot 19, the pull rod 22 is fixed to the lower end of the limiting block 17, and the pull rod 22 extends into the contraction slot 19, the lifting block 23 is provided with two blocks and is fixed to the two sides of the pull rod 22, the return spring 24 is provided with two and is one-to-one connected to the lower end of the lifting block 23, and the lower end of the return spring 24 is connected to the bottom end of the contraction slot 19, the pull rod 22 slides through the bottom of the reinforcing support plate 2, and the pull plate 25 is fixed to the lower end of the pull rod 22.

[0033] And the limiting block 17 is inserted into the limiting groove 18, in this process, the limiting block 17 will be pushed along the slope of the anti-off block 21 into the contraction groove 19, the anti-off block 21 will drive the pull rod 22 and the lifting block 23 to move down, the lifting block 23 will compress the return spring 24, until the limiting block 17 is completely inserted into the limiting groove 18, at this time the anti-off block 21 will be aligned with the notch of the anti-off slot 20, so the elastic force of the return spring 24 will drive the lifting block 23, the pull rod 22 and the anti-off block 21 to move up and reset until the anti-off block 21 is clamped into the anti-off slot 20, which is beneficial to prevent the positioning plug-in plate 13 from accidentally moving out of the main positioning plug-in slot 8 and the auxiliary positioning plug-in slot 10, thereby preventing the L-shaped stair plate piece 1 and the top plate 4 from accidentally slipping and falling during assembly, thereby improving assembly safety.

[0034] As shown in Figures 2-7 In this embodiment, the fixed plate 6 has left and right through-thread positioning holes 12, the first threaded reinforcing rods 14 are screwed into the thread positioning holes 12, the auxiliary threaded slots 11 are formed in the upper part of the inner part of the butt joint block 7, the first threaded reinforcing rods 14 are screwed with the main threaded slots 9 and the auxiliary threaded slots 11, the positioning plug-in plates 13, the L-shaped stair plate pieces 1, the top plates 4 and the reinforcing support plates 2 have threaded reinforcing holes 15 in the middle of the lower end, and the second threaded reinforcing rods 16 are screwed into the threaded reinforcing holes 15.

[0035] Moreover, the first threaded reinforcing rods 14 are screwed with the threaded positioning holes 12, the main threaded slots 9 and the auxiliary threaded slots 11, and the second threaded reinforcing rods 16 are screwed with the threaded reinforcing holes 15, which not only prevents the butt joint block 7 from loosening in the butt joint 5, but also effectively prevents the positioning plug-in plate 13 from loosening in the main positioning plug-in slot 8 and the auxiliary positioning plug-in slot 10, and the anti-off block 21 is clamped into the anti-off slot 20, which is beneficial to ensure the stability of the L-shaped stair plate piece 1 and the top plate 4 after assembly, thereby ensuring the firmness of the stair structure after assembly. In summary, since the number of threaded rods is relatively small, the convenience of assembly is effectively ensured, and the first threaded reinforcing rods 14 and the second threaded reinforcing rods 16 are not on the tread surface of the L-shaped stair plate piece 1, so as to ensure the flatness and aesthetics of the tread surface of the entire stair structure.

Claims

1. An assembled recycled concrete prefabricated stair structure, comprising an L-shaped stair plate piece (1), a reinforcing support plate (2) and a top plate (4), the reinforcing support plate (2) is fixed to the right upper end of the L-shaped stair plate piece (1), and the top plate (4) is arranged above the reinforcing support plate (2), characterized in that: the left and right sides of the lower end of the L-shaped stair plate piece (1) and the top plate (4) are provided with butt joints (5), and the right side of the L-shaped stair plate piece (1) and the top plate (4) are provided with main positioning slots (8) and main threaded slots (9) communicated with the butt joints (5), the left and right sides of the upper end of the reinforcing support plate (2) are fixed with butt blocks (7), the butt blocks (7) are matched with the butt joints (5), the inside of the butt blocks (7) is provided with left and right through vice positioning slots (10) at the lower end, the right side of the reinforcing support plate (2) is provided with a fixed plate (6), the left side of the fixed plate (6) is fixed with a positioning insert plate (13), and the positioning insert plate (13) is butted in the main positioning slot (8) and the vice positioning slot (10). The lower left end of the fixed plate (6) is provided with an anti-dropping limiting assembly. The inside of the fixed plate (6) is provided with left and right through threaded positioning holes (12), the threaded positioning holes (12) are threadedly connected with first threaded reinforcing rods (14), the inside of the butt block (7) is provided with left and right through vice threaded slots (11) at the upper end, the first threaded reinforcing rods (14) are threadedly connected with the main threaded slots (9) and the vice threaded slots (11), the middle part of the lower end of the positioning insert plate (13), the L-shaped stair plate piece (1), the top plate (4) and the reinforcing support plate (2) are all provided with threaded reinforcing holes (15), and the threaded reinforcing holes (15) are threadedly connected with second threaded reinforcing rods (16). The L-shaped stair plate piece (1) and the reinforcing support plate (2) are fixed with a reinforcing inclined plate (3).

2. The assembled recycled concrete precast stair structure according to claim 1, characterized in that: The anti-dropping limiting assembly comprises a limiting block (17), an anti-dropping clamping block (21), a pull rod (22), a lifting block (23), a return spring (24) and a pull plate (25), the limiting block (17) is fixed to the lower left end of the fixed plate (6), the right side of the reinforcing support plate (2) is provided with a limiting slot (18), and the limiting block (17) is butted with the limiting slot (18).

3. The assembled recycled concrete precast stair structure according to claim 1, characterized in that: The lower end of the limiting block (17) is provided with an anti-dropping clamping groove (20), the anti-dropping clamping block (21) is clamped in the anti-dropping clamping groove (20), and the right side surface of the anti-dropping clamping block (21) is inclined.

4. The assembled recycled concrete precast stair structure according to claim 3, characterized in that: The inside bottom of the limiting slot (18) is provided with a contraction slot (19), the pull rod (22) is fixed to the lower end of the limiting block (17), the pull rod (22) extends into the contraction slot (19), the lifting block (23) is provided with two blocks and is fixed to the two sides of the pull rod (22), the return spring (24) is provided with two and is butted to the lower end of the lifting block (23), and the lower end of the return spring (24) is butted to the inside bottom end of the contraction slot (19).

5. The assembled recycled concrete precast stair structure according to claim 3, characterized in that: The pull rod (22) slides through the lower surface of the reinforcing support plate (2), and the pull plate (25) is fixed to the lower end of the pull rod (22).

6. The assembled recycled concrete precast stair structure according to claim 5, characterized in that: ​

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