Prefabricated stair board structure

Abstract

The utility model provides a prefabricated stair plate structure, belongs to the technical field of constructional engineering, and aims to solve the problems that after an existing prefabricated stair plate is installed, when concrete filled in a gap is not solidified, when the prefabricated stair plate is pushed by external force, the position of the prefabricated stair plate deviates, positioning installation needs to be conducted again, and the construction cost is high. The device comprises two installation platforms, one installation platform is arranged on the upper portion, and the other installation platform is arranged on the lower portion; the two sets of reserved steel bars are fixedly connected to the upper end faces of the two mounting platforms correspondingly. The stair piece is mounted on the upper end surfaces of the two mounting platforms; the number of the fixing blocks is two, and the two fixing blocks are fixedly connected to the inner side of the stair piece. The two groups of mounting blocks are respectively inserted into the inner sides of the two groups of fixing blocks; through the arrangement of the limiting device, the limiting of the prefabricated stair plate is realized, the working efficiency is improved, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of building engineering, and more specifically, particularly relates to a prefabricated stair slab structure. Background Art

[0002] Prefabricated stair slabs use stair-shaped formwork. After steel bars are placed in the formwork, concrete is used to fill the interior of the formwork. After the concrete solidifies, a stair slab of a fixed shape will be formed. During the installation process of existing prefabricated stair slabs, tools are usually required to lift the stair slabs and then install them. After the installation is completed, the gaps generated during the installation are filled with concrete.

[0003] According to a prefabricated stair slab structure disclosed in application number: CN202320147565.7, the high-end support fixed hinge support is optimized, and a strip hole arranged along the longitudinal direction of the stair slab body is used to absorb the error of the embedded pin key bolt in this direction. The low-end support sliding hinge support still uses a round hole to meet the design displacement requirements for the stairs. By adjusting the form of the pin key reserved hole of the high-end support fixed hinge support, the longitudinal dimensional deviation of the embedded pin key bolt can be absorbed, thereby improving the installation efficiency of the PC stair slab and reducing the safety hazards of workers correcting the perforation of the embedded pin key bolt during the installation of the stair slab. The utility model solves the problem of low efficiency in the accurate docking and assembly of the reserved holes of the stair slab and the embedded pin key bolts during the installation of the existing prefabricated stair slab.

[0004] Based on the above, after the existing prefabricated stair slabs are installed, when the concrete filling the gaps has not solidified, when the prefabricated stair slabs are pushed by external force, the position of the prefabricated stair slabs will be offset, and they need to be repositioned and installed, affecting work efficiency. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a prefabricated stair tread structure to solve the problem that after the existing prefabricated stair treads are installed, when the concrete filling in the gaps has not solidified, when the prefabricated stair treads are pushed by external force, the position of the prefabricated stair treads will be offset, and they need to be re-positioned and installed, affecting work efficiency.

[0006] The purpose and function of the prefabricated stair slab structure of the utility model are achieved by the following specific technical means:

[0007] A prefabricated stair tread structure, comprising an installation platform, reserved steel bars, a stair component, a fixed block, a mounting block, a fixed ring, a lifting mechanism, a mounting mechanism and a limiting mechanism; two installation platforms are provided, one installation platform is arranged at the top, and the other installation platform is arranged at the bottom; two groups of reserved steel bars are provided, and the two groups of reserved steel bars are respectively fixedly connected to the upper end surfaces of the two installation platforms; the stair component is installed on the upper end surfaces of the two installation platforms; two groups of fixing blocks are provided, and the two groups of fixing blocks are fixedly connected to the inner side of the stair component; two groups of mounting blocks are provided, and the two groups of mounting blocks are respectively plugged into the inner sides of the two groups of fixing blocks; two groups of fixing rings are provided, and the two groups of fixing rings are respectively fixedly connected to the upper end surfaces of the two groups of mounting blocks; the lifting mechanism is provided on the inner side of the fixing block; the mounting mechanism is provided on the inner side of the stair component; the limiting mechanism is provided on the inner side of the stair component.

[0008] Furthermore, the lifting mechanism includes: a limit groove, a limit block and a compression spring; the limit groove is provided with two groups, and the two groups of limit grooves are respectively opened on the inner sides of the two groups of fixed blocks; the limit blocks are provided with two groups, and the two groups of limit blocks are respectively slidably connected to the inner sides of the two groups of mounting blocks; the compression spring is provided with two groups, and the two groups of compression springs are respectively fixedly connected to the outer sides of the two groups of limit blocks, and the two groups of compression springs are respectively fixedly connected to the inner sides of the two groups of mounting blocks.

[0009] Furthermore, the lifting mechanism also includes: connecting blocks, inclined grooves, sliding frames and fixed shafts; the connecting blocks are provided with two groups, and the two groups of connecting blocks are respectively fixedly connected to the outer sides of the two groups of limit blocks; the inclined grooves are provided with two groups, and the two groups of inclined grooves are respectively opened on the inner sides of the two groups of connecting blocks; the sliding frames are provided with two groups, and the two groups of sliding frames are respectively slidably connected to the inner sides of the two groups of mounting blocks; the fixed shafts are provided with two groups, and the two groups of fixed shafts are respectively fixedly connected to the inner sides of the lower ends of the two groups of sliding frames, and the fixed shafts are slidably connected to the inclined grooves.

[0010] Furthermore, the installation mechanism includes: a fixed cylinder and a sliding cylinder; the fixed cylinder is provided with two groups, and the two groups of fixed cylinders are fixedly connected to the inner side of the stair member; the sliding cylinder is provided with two groups, and the two groups of sliding cylinders are respectively slidably connected to the inner sides of the two groups of fixed cylinders, and the lower end of the sliding cylinder is trumpet-shaped.

[0011] Furthermore, the limiting mechanism includes: a worm, an operating member and a worm wheel; two worms are provided, and both worms are rotatably connected to the inner side of the stair member; two operating members are provided, and both operating members are fixedly connected to the upper end surfaces of the two worms respectively; two groups of worm wheels are provided, and both groups of worm wheels are rotatably connected to the inner side of the stair member, and the two groups of worm wheels are meshed with the two worms.

[0012] Furthermore, the limiting mechanism also includes: a threaded barrel, a threaded rod and a fixed plate; the threaded barrel is provided with two groups, and the two groups of threaded barrels are respectively fixedly connected to the outer sides of the two groups of worm gears; the threaded rod is provided with two groups, and the two groups of threaded rods are respectively threadedly connected to the inner sides of the two groups of threaded barrels; the fixed plates are provided with two, and the two fixed plates are respectively fixedly connected to the outer sides of the two groups of threaded rods.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model realizes the hoisting of the prefabricated stair slab by setting the hoisting mechanism. It only needs to insert the installation block into the inner side of the fixing block, so that the limiting block can be inserted into the inner side of the limiting groove under the action of the compression spring to limit the installation block. At this time, the prefabricated stair slab can be hoisted by the hoisting tool, which is simple to operate and improves the work efficiency. The installation of the prefabricated floor slab is realized by setting the installation mechanism. The trumpet-shaped setting at the lower end of the sliding cylinder can more conveniently install the prefabricated floor slab, which is simple to operate, speeds up the installation speed and improves the work efficiency. The setting of the limiting mechanism realizes the installation of the prefabricated stair slab. The plate is limited by using a tool to rotate the operating part, so that the worm drives the threaded barrel to rotate through the engagement with the worm wheel. The rotation of the threaded barrel drives the fixed plate to slide through the rotation of the threaded rod, so that the fixed plate is against the outside of the installation platform, and the prefabricated stair plate is limited to prevent the prefabricated stair plate from shifting after being subjected to external force, thereby improving work efficiency and reducing labor intensity. Through the setting of the above-mentioned mechanism, the hoisting of the prefabricated stair plate is realized, the work efficiency is improved, and the installation of the prefabricated floor slabs is realized, the installation speed is accelerated, the work efficiency is improved, and the limitation of the prefabricated stair plate is realized, the work efficiency is improved, and the labor intensity is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the main body of the utility model.

[0016] Figure 2 It is a structural schematic diagram of a cross-section of a staircase component of the utility model.

[0017] Figure 3 It is a structural schematic diagram of a cross-section of a fixing block of the utility model.

[0018] Figure 4 It is a structural schematic diagram of a cross-section of the installation block of the utility model.

[0019] Figure 5 It is a structural schematic diagram of the sliding cylinder of the utility model.

[0020] Figure 6 It is a structural schematic diagram of the worm gear of the utility model.

[0021] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0022] 1. Installation platform; 2. Reserved steel bars; 3. Staircase parts; 4. Fixed blocks; 5. Installation blocks; 6. Fixed rings; 7. Limiting grooves; 8. Limiting blocks; 9. Compression springs; 10. Connecting blocks; 11. Inclined grooves; 12. Sliding racks; 13. Fixed shafts; 14. Fixed cylinders; 15. Sliding cylinders; 16. Worms; 17. Operating parts; 18. Worm wheels; 19. Threaded cylinders; 20. Threaded rods; 21. Fixed plates. DETAILED DESCRIPTION

[0023] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples.

[0024] Embodiment 1:

[0025] As attached Figure 1-Figure 4 As shown:

[0026] The utility model provides a prefabricated stair tread structure, comprising an installation platform 1, reserved steel bars 2, a stair component 3, a fixing block 4, a mounting block 5, a fixing ring 6, a lifting mechanism, a mounting mechanism and a limiting mechanism; two installation platforms 1 are provided, one installation platform 1 is arranged at the top, and the other installation platform 1 is arranged at the bottom; two groups of reserved steel bars 2 are provided, and the two groups of reserved steel bars 2 are respectively fixedly connected to the upper end surfaces of the two installation platforms 1; the stair component 3 is installed on the upper end surfaces of the two installation platforms 1; two groups of fixing blocks 4 are provided, and the two groups of fixing blocks 4 are fixedly connected to the inner side of the stair component 3; two groups of mounting blocks 5 are provided, and the two groups of mounting blocks 5 are respectively plugged into the inner sides of the two groups of fixing blocks 4; two groups of fixing rings 6 are provided, and the two groups of fixing rings 6 are respectively fixedly connected to the upper end surfaces of the two groups of mounting blocks 5; the lifting mechanism is provided on the inner side of the fixing block 4; the mounting mechanism is provided on the inner side of the stair component 3; and the limiting mechanism is provided on the inner side of the stair component 3.

[0027] Among them, the lifting mechanism includes: a limit groove 7, a limit block 8, a compression spring 9, a connecting block 10, an inclined groove 11, a sliding frame 12 and a fixed shaft 13; the limit groove 7 is provided with two groups, and the two groups of limit grooves 7 are respectively opened on the inner sides of the two groups of fixed blocks 4; the limit block 8 is provided with two groups, and the two groups of limit blocks 8 are respectively slidably connected to the inner sides of the two groups of mounting blocks 5; the compression spring 9 is provided with two groups, and the two groups of compression springs 9 are respectively fixedly connected to the outer sides of the two groups of limit blocks 8, and the two groups of compression springs 9 are respectively fixedly connected to the two The inner side of the two mounting blocks 5; there are two groups of connecting blocks 10, which are respectively fixedly connected to the outer sides of the two groups of limit blocks 8; there are two groups of inclined grooves 11, which are respectively opened on the inner sides of the two connecting blocks 10; there are two groups of sliding frames 12, which are respectively slidably connected to the inner sides of the two mounting blocks 5; there are two groups of fixed shafts 13, which are respectively fixedly connected to the inner sides of the lower ends of the two sliding frames 12, and the fixed shafts 13 are slidably connected to the inclined grooves 11.

[0028] The specific usage and function of this embodiment are as follows: the mounting block 5 is inserted into the inner side of the fixed block 4, so that the limit block 8 is inserted into the inner side of the limit groove 7 under the action of the compression spring 9, so as to realize the installation of the mounting block 5. At this time, the lifting tool can be used to hook the fixed ring 6 for lifting. After the lifting is completed, by pressing down the sliding frame 12, the sliding frame 12 will drive the fixed shaft 13 to slide downward, and the sliding connection between the fixed shaft 13 and the inclined groove 11 will cause the connecting block 10 to drive the limit block 8 to slide toward the inside of the mounting block 5. At this time, the limit block 8 will be separated from the limit groove 7, and the mounting block 5 can be taken out.

[0029] Embodiment 2:

[0030] On the basis of the first embodiment, Figure 5 As shown, it also includes a mounting mechanism, a fixed cylinder 14 and a sliding cylinder 15; there are two groups of fixed cylinders 14, and the two groups of fixed cylinders 14 are fixedly connected to the inner side of the stair member 3; there are two groups of sliding cylinders 15, and the two groups of sliding cylinders 15 are respectively slidably connected to the inner sides of the two groups of fixed cylinders 14, and the lower end of the sliding cylinder 15 is trumpet-shaped.

[0031] Specific usage and function of this embodiment: When the stair member 3 is hoisted, the sliding cylinder 15 will slide downward under the action of gravity. When installing, the stair member 3 can be installed by first aligning the sliding cylinder 15 with the reserved steel bars 2 and then lowering the stair member 3. Since the lower end of the sliding cylinder 15 is trumpet-shaped, it can be installed more conveniently.

[0032] Embodiment three:

[0033] On the basis of the first embodiment, Figure 6 As shown, it also includes a limiting mechanism, a worm 16, an operating member 17, a worm wheel 18, a threaded barrel 19, a threaded rod 20 and a fixed plate 21; there are two worms 16, and the two worms 16 are rotatably connected to the inner side of the stair member 3; there are two operating members 17, and the two operating members 17 are respectively fixedly connected to the upper end surfaces of the two worms 16; there are two groups of worm wheels 18, and the two groups of worm wheels 18 are rotatably connected to the inner side of the stair member 3, and the two groups of worm wheels 18 are meshed with the two worms 16; there are two groups of threaded barrels 19, and the two groups of threaded barrels 19 are respectively fixedly connected to the outer sides of the two groups of worm wheels 18; there are two groups of threaded rods 20, and the two groups of threaded rods 20 are respectively threadedly connected to the inner sides of the two groups of threaded barrels 19; there are two fixed plates 21, and the two fixed plates 21 are respectively fixedly connected to the outer sides of the two groups of threaded rods 20.

[0034] Specific usage and function of this embodiment: After the stair member 3 is installed, use a tool to rotate the operating member 17. The rotation of the operating member 17 will drive the worm 16 to rotate. The rotation of the worm 16 will drive the threaded barrel 19 to rotate through the engagement with the worm wheel 18. The threaded barrel 19 is threadedly connected to the threaded rod 20. When the threaded barrel 19 rotates, the threaded rod 20 will push the fixing plate 21 to slide, so that the fixing plate 21 is against the outside of the installation platform 1, preventing a gap between the stair member 3 and the installation platform 1, which is easy to deviate when the stair member 3 is subjected to external force.

Claims

1. A prefabricated stair slab structure, comprising a mounting platform (1), reserved steel bars (2), a stair member (3), a fixing block (4), a mounting block (5), a fixing ring (6), a hoisting mechanism, a mounting mechanism and a limiting mechanism; the mounting platforms (1) are provided with two, one mounting platform (1) is arranged at the top, and the other mounting platform (1) is arranged at the bottom; the reserved steel bars (2) are provided with two groups, and the two groups of reserved steel bars (2) are respectively fixedly connected to the upper end surfaces of the two mounting platforms (1); the stair member (3) is installed on the upper end surfaces of the two mounting platforms (1); characterized in that: The fixing blocks (4) are provided in two groups, and the two groups of fixing blocks (4) are fixedly connected to the inner side of the stair member (3); the mounting blocks (5) are provided in two groups, and the two groups of mounting blocks (5) are respectively plugged into the inner side of the two groups of fixing blocks (4); the fixing rings (6) are provided in two groups, and the two groups of fixing rings (6) are respectively fixedly connected to the upper end surfaces of the two groups of mounting blocks (5); the lifting mechanism is arranged on the inner side of the fixing blocks (4); the mounting mechanism is arranged on the inner side of the stair member (3); and the limiting mechanism is arranged on the inner side of the stair member (3).

2. A prefabricated stair slab structure as claimed in claim 1, characterized in that: The hoisting mechanism comprises: a limit groove (7), a limit block (8) and a compression spring (9); the limit groove (7) is provided with two groups, and the two groups of limit grooves (7) are respectively opened on the inner sides of the two groups of fixed blocks (4); the limit block (8) is provided with two groups, and the two groups of limit blocks (8) are respectively slidably connected to the inner sides of the two groups of mounting blocks (5); the compression spring (9) is provided with two groups, and the two groups of compression springs (9) are respectively fixedly connected to the outer sides of the two groups of limit blocks (8), and the two groups of compression springs (9) are respectively fixedly connected to the inner sides of the two groups of mounting blocks (5).

3. A prefabricated stair slab structure as claimed in claim 2, characterized in that: The hoisting mechanism further comprises: a connecting block (10), an inclined groove (11), a sliding frame (12) and a fixed shaft (13); the connecting block (10) is provided with two groups, and the two groups of connecting blocks (10) are respectively fixedly connected to the outer sides of the two groups of limit blocks (8); the inclined groove (11) is provided with two groups, and the two groups of inclined grooves (11) are respectively opened on the inner sides of the two groups of connecting blocks (10); the sliding frame (12) is provided with two groups, and the two groups of sliding frames (12) are respectively slidably connected to the inner sides of the two groups of mounting blocks (5); the fixed shaft (13) is provided with two groups, and the two groups of fixed shafts (13) are respectively fixedly connected to the inner sides of the lower ends of the two groups of sliding frames (12), and the fixed shaft (13) is slidably connected to the inclined groove (11).

4. A prefabricated stair slab structure as claimed in claim 1, characterized in that: The installation mechanism comprises: a fixed cylinder (14) and a sliding cylinder (15); the fixed cylinder (14) is provided with two groups, and the two groups of fixed cylinders (14) are fixedly connected to the inner side of the stair member (3); the sliding cylinder (15) is provided with two groups, and the two groups of sliding cylinders (15) are respectively slidably connected to the inner sides of the two groups of fixed cylinders (14), and the lower end of the sliding cylinder (15) is trumpet-shaped.

5. The prefabricated stair slab structure according to claim 1, characterized in that: The limiting mechanism comprises: a worm (16), an operating member (17) and a worm wheel (18); two worms (16) are provided, and the two worms (16) are both rotatably connected to the inner side of the stair member (3); two operating members (17) are provided, and the two operating members (17) are respectively fixedly connected to the upper end surfaces of the two worms (16); two groups of worm wheels (18) are provided, and the two groups of worm wheels (18) are both rotatably connected to the inner side of the stair member (3), and the two groups of worm wheels (18) are meshed with the two worms (16).

6. A prefabricated stair slab structure as claimed in claim 5, characterized in that: The limiting mechanism further comprises: a threaded barrel (19), a threaded rod (20) and a fixing plate (21); the threaded barrel (19) is provided with two groups, and the two groups of threaded barrels (19) are respectively fixedly connected to the outer sides of the two groups of worm wheels (18); the threaded rod (20) is provided with two groups, and the two groups of threaded rods (20) are respectively threadedly connected to the inner sides of the two groups of threaded barrels (19); Two fixing plates (21) are provided, and the two fixing plates (21) are respectively fixedly connected to the outer sides of the two groups of threaded rods (20).

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