A prefabricated staircase finished product protection and fixing device

Abstract

This utility model discloses a protective and fixing device for prefabricated staircases, relating to the field of prefabricated building construction protection technology. It includes two bottom fixing strips, two top fixing strips, and a prefabricated staircase. Both the bottom and top fixing strips have an L-shaped cross-section. The two bottom fixing strips are connected by a width limiting component, allowing the two plates to partially overlap and be bolted on. The spacing between the two bottom fixing strips matches the width of the prefabricated staircase. The bottom fixing strips are placed on both sides below the prefabricated staircase, allowing their L-shaped grooves to engage with the bottom of the staircase. A hanging rod is then attached to a hook, and rotating the threaded tube causes the hanging rod and top fixing strips to press down until they are fixed. The entire installation process is quick and convenient. The positions of the bottom and top fixing strips are adjustable, enabling installation and protection for prefabricated staircases of various specifications. Furthermore, the components are detachable and recyclable, improving practicality.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated building construction protection technology, specifically relating to a prefabricated staircase finished product protection and fixing device. Background Technology

[0002] With the promotion and use of prefabricated green buildings in the construction industry, prefabricated building structures are gradually replacing cast-in-place concrete building structures. Among them, prefabricated stairs are a type of prefabricated component frequently used in prefabricated buildings. During construction, prefabricated stairs serve as passageways for workers to go up and down, and also bear the responsibilities of material transportation and load-bearing. The prefabricated stair components need to be transported to the site by vehicle for use.

[0003] Currently, the protection of prefabricated stairs mostly uses wooden formwork, which is fixed around the finished stairs for protection. However, the wooden formwork cannot be recycled after removal, which leads to waste of wood and poor practicality. Utility Model Content

[0004] The purpose of this utility model is to provide a prefabricated staircase finished product protection and fixing device to solve the above problems, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This utility model provides a prefabricated staircase protective fixing device, including two bottom fixing strips, two top fixing strips, and a prefabricated staircase. The cross-sections of the two bottom fixing strips and the two top fixing strips are both L-shaped, and the prefabricated staircase is located between the two bottom fixing strips and the two top fixing strips. Several tensioning fixing members are provided between the bottom fixing strips and the top fixing strips to move them closer to each other. Several width limiting members are provided between the two bottom fixing strips and between the two top fixing strips. Several protective strips adapted to the edge of the prefabricated staircase are provided below the two top fixing strips.

[0006] Preferably, the tensioning fastener includes a hook fixedly connected to the side wall of the top fixing strip, the hook being provided with a hanging rod, and the side wall of the bottom fixing strip being provided with a telescopic rod structure for driving the hanging rod to move up and down.

[0007] Preferably, the telescopic rod structure includes a connecting seat fixedly connected to the side wall of the bottom fixing strip, a threaded tube rotatably connected to the connecting seat, a threaded rod threadedly connected to the threaded tube, and a hanging rod fixedly connected to the upper end of the threaded rod.

[0008] Preferably, a hexagonal block is fixedly connected to the middle of the threaded tube.

[0009] Preferably, the width limiting member includes two plates, which are respectively fixedly connected between two bottom fixing strips and two top fixing strips. The two plates are designed to be one above the other and partially overlap, and the ends of the two plates are provided with bolts for fixing their positions to each other.

[0010] Preferably, the bolted connector includes a through hole at one end of the plate, into which a bolt is inserted. The other side of the plate has several positioning holes for bolt insertion, and a nut is threaded onto the bolt.

[0011] Preferably, the upper surfaces of several of the protective strips are fixedly connected with teeth, and the bottom surfaces of the two top fixing strips are fixedly connected with racks that mesh with the teeth.

[0012] Preferably, the bottom surface of the protective strip is provided with a right-angled groove, and the right-angled groove is adapted to the external corner edge of the prefabricated staircase.

[0013] Preferably, anti-slip pads are fixedly connected to the inner sides of both bottom fixing strips.

[0014] Preferably, the tensioning fasteners and the width limiting fasteners are all evenly distributed along the length direction of the bottom fixing strip and the top fixing strip.

[0015] The beneficial effects are: By connecting the two bottom fixing strips with width limiting components, the two plates overlap and are bolted on. At this point, the spacing between the two bottom fixing strips matches the width of the prefabricated staircase. The bottom fixing strips are placed on both sides of the bottom of the prefabricated staircase, so that their L-shaped grooves engage with the bottom of the prefabricated staircase. Then, the hanging rod is hung on the hook and the threaded tube is rotated to drive the hanging rod and the top fixing strip down until they are fixed. The entire installation process is quick and convenient. The positions of the bottom fixing strips and the top fixing strips are adjustable, enabling installation and protection for prefabricated staircases of various specifications. At the same time, the components can be disassembled and recycled, improving practicality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is a split perspective view of the tensioning and fixing component of this utility model; Figure 3 This is a perspective view of the width limiting component of this utility model; Figure 4 This is a partial perspective view of the protective strip of this utility model; Figure 5 This is a split perspective view of this utility model.

[0018] The annotations in the attached figures are explained as follows: 1. Bottom fixing strip; 2. Top fixing strip; 3. Tensioning fastener; 301. Hook; 302. Hanging rod; 303. Connecting seat; 304. Threaded pipe; 305. Threaded rod; 4. Width limiting component; 401. Plate; 402. Through hole; 403. Bolt; 404. Nut; 405. Positioning hole; 5. Protective strip; 6. Prefabricated staircase; 7. Rack; 8. Tooth. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] See Figures 1-5 As shown, this utility model provides a prefabricated staircase protective fixing device, including two bottom fixing strips 1, two top fixing strips 2, and a prefabricated staircase 6. The cross-sections of the two bottom fixing strips 1 and the two top fixing strips 2 are both L-shaped, and the prefabricated staircase 6 is located between the two bottom fixing strips 1 and the two top fixing strips 2. Several tensioning fixing members 3 are provided between the bottom fixing strips 1 and the top fixing strips 2 to move them closer to each other. Several width limiting members 4 are provided between the two bottom fixing strips 1 and the two top fixing strips 2. Several protective strips 5 that are adapted to the edge of the prefabricated staircase 6 are provided below the two top fixing strips 2.

[0021] Reference Figure 2As shown, the tensioning fastener 3 includes a hook 301 fixedly connected to the side wall of the top fixing strip 2, with a hanging rod 302 on the hook 301. The side wall of the bottom fixing strip 1 has a telescopic rod structure for moving the hanging rod 302 up and down. The telescopic rod structure includes a connecting seat 303 fixedly connected to the side wall of the bottom fixing strip 1. A threaded tube 304 is rotatably connected to the connecting seat 303, and a threaded rod 305 is threadedly connected to the threaded tube 304. The hanging rod 302 is fixedly connected to the upper end of the threaded rod 305, thus securing the top fixing strip 2. The fixing strip 2 covers several protective strips 5. At this time, the rack 7 and the teeth 8 on the protective strips 5 mesh with each other. Then, the hanging rod 302 is hung on the hook 301 and the threaded tube 304 is rotated. Since the hanging rod 302 and the threaded rod 305 are limited by the hook 301, when the threaded tube 304 rotates, it can drive the hanging rod 302 and the top fixing strip 2 to press down until they are fixed. This allows the bottom fixing strip 1 and the top fixing strip 2 to come closer to each other. It can be adapted to various prefabricated stairs 6 of different specifications and can provide firm protection for the outside of the prefabricated stairs 6.

[0022] Specifically, a hexagonal block is fixedly connected to the middle of the threaded tube 304. The hexagonal block makes it easy to rotate the threaded tube 304 with tools such as wrenches, thereby improving the connection strength.

[0023] Reference Figure 3 As shown, the width limiting component 4 includes two plates 401, which are fixedly connected between two bottom fixing strips 1 and two top fixing strips 2. The two plates 401 are designed with one above the other and partially overlap. The ends of both plates 401 are provided with bolt connectors for fixing their positions to each other. The bolt connectors include through holes 402 opened at the ends of the plates 401, into which bolts 403 are inserted. Several positioning holes 405 are opened on the other side of the plates 401 for inserting the bolts 403. The bolt 403 is threaded with a nut 404. First, the two bottom fixing strips 1 are connected by the width limiting piece 4 (taking the bottom fixing strip 1 as an example, the width of the top fixing strip 2 is fixed in the same way), so that the two plates 401 partially overlap. Then, bolts 403 are installed at both ends of the two plates 401, so that the bolts 403 are inserted into the through hole 402 and the positioning hole 405 at the same time. Then, the nut 404 is rotated and fixed at the end of the bolt 403. At this time, the distance between the two bottom fixing strips 1 is adapted to the width of the prefabricated staircase 6.

[0024] Reference Figure 4As shown, teeth 8 are fixedly connected to the upper surface of several protective strips 5, and racks 7 that mesh with teeth 8 are fixedly connected to the bottom surface of two top fixing strips 2. After the right-angle groove of the protective strip 5 covers the external corner of the step, the top fixing strip 2 is then placed on top of several protective strips 5. At this time, the racks 7 and teeth 8 on several protective strips 5 mesh with each other, which can prevent the prefabricated staircase 6 from shaking between the bottom fixing strip 1 and the top fixing strip 2 after they are fixed close to each other, making the prefabricated staircase 6 more stable and firm between the bottom fixing strip 1 and the top fixing strip 2.

[0025] Furthermore, the bottom surface of each protective strip 5 is provided with a right-angled groove, and the right-angled groove is adapted to the external corner edge of the prefabricated staircase 6. Several protective strips 5 can be placed on the upper step edge of the prefabricated staircase 6 so that the right-angled groove of the protective strip 5 covers the external corner of the step, thereby improving the protection effect on the external corner of the step.

[0026] Specifically, anti-slip pads are fixedly connected to the inner sides of both bottom fixing strips 1, which increases the friction between the bottom fixing strip 1 and the bottom of the prefabricated staircase 6 after the bottom fixing strip 1 and the top fixing strip 2 are close to each other and fixed to the prefabricated staircase 6, making the fixing of the prefabricated staircase 6 more stable.

[0027] Specifically, several tensioning fasteners 3 and several width limiting fasteners 4 are evenly distributed along the length of the bottom fixing strip 1 and the top fixing strip 2, which makes the force around the prefabricated staircase 6 more stable after the bottom fixing strip 1 and the top fixing strip 2 are connected and fixed.

[0028] During installation, first connect the two bottom fixing strips 1 using the width limiting piece 4 (taking the bottom fixing strip 1 as an example, the width of the top fixing strip 2 is fixed in the same way), so that the two plates 401 partially overlap, and install bolts 403 at both ends of the two plates 401, so that the bolts 403 are simultaneously inserted into the through hole 402 and the positioning hole 405, and then rotate the fixing nut 404 at the end of the bolt 403. At this time, the distance between the two bottom fixing strips 1 is adapted to the width of the prefabricated staircase 6, and the bottom fixing strips 1 are placed on both sides below the prefabricated staircase 6. Make its L-shaped groove engage with the bottom of the prefabricated staircase 6, and then place several protective strips 5 on the upper step edge of the prefabricated staircase 6 so that the right-angled grooves of the protective strips 5 cover the external corners of the steps. Then cover the top fixing strip 2 on top of the protective strips 5. At this time, the rack 7 and the teeth 8 on the protective strips 5 mesh with each other. Then hang the hanging rod 302 on the hook 301 and rotate the threaded tube 304. Since the hanging rod 302 and the threaded rod 305 are limited by the hook 301, when the threaded tube 304 rotates, it can drive the hanging rod 302 and the top fixing strip 2 down until they are fixed.

[0029] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A fabricated stair finished product protection fixture, characterized by: It includes two bottom fixing strips (1), two top fixing strips (2) and a prefabricated staircase (6). The cross-sections of the two bottom fixing strips (1) and the two top fixing strips (2) are both L-shaped. The prefabricated staircase (6) is located between the two bottom fixing strips (1) and the two top fixing strips (2). Several tensioning fasteners (3) are provided between the bottom fixing strips (1) and the top fixing strips (2) to move them closer to each other. Several width limiting fasteners (4) are provided between the two bottom fixing strips (1) and between the two top fixing strips (2). Several protective strips (5) that are adapted to the edge of the prefabricated staircase (6) are provided below the two top fixing strips (2).

2. The assembled stair finished product protection fixture of claim 1, wherein: The tensioning fastener (3) includes a hook (301) fixedly connected to the side wall of the top fixing strip (2), and a hanging rod (302) is provided on the hook (301). The side wall of the bottom fixing strip (1) is provided with a telescopic rod structure for driving the hanging rod (302) to move up and down.

3. The assembled stair finished product protection fixture of claim 2, wherein: The telescopic rod structure includes a connecting seat (303) fixedly connected to the side wall of the bottom fixing strip (1), a threaded tube (304) rotatably connected to the connecting seat (303), a threaded rod (305) threadedly connected to the threaded tube (304), and a hanging rod (302) fixedly connected to the upper end of the threaded rod (305).

4. The assembled stair finished product protection fixture of claim 3, wherein: A hexagonal block is fixedly connected to the middle of the threaded tube (304).

5. The assembled stair finished product protection fixture of claim 1, wherein: The width limiting member (4) includes two plates (401), which are fixedly connected between two bottom fixing strips (1) and two top fixing strips (2). The two plates (401) are designed with one above the other and have partial overlap. The ends of the two plates (401) are provided with bolts for fixing their positions to each other.

6. The assembled stair finished product protection fixture of claim 5, wherein: The bolted connector includes a through hole (402) at the end of the plate (401), into which a bolt (403) is inserted. On the other side of the plate (401), there are several positioning holes (405) for inserting the bolt (403). A nut (404) is threaded onto the bolt (403).

7. The prefabricated staircase finished product protection and fixing device according to claim 1, characterized in that: The upper surfaces of several of the protective strips (5) are fixedly connected with teeth (8), and the bottom surfaces of the two top fixing strips (2) are fixedly connected with racks (7) that mesh with the teeth (8).

8. The assembled stair finished product protection fixture of claim 1, wherein: The bottom surface of each protective strip (5) is provided with a right-angled groove, and the right-angled groove is adapted to the external corner edge of the prefabricated staircase (6).

9. The assembled stair finished product protection fixture of claim 1, wherein: Anti-slip pads are fixedly connected to the inner sides of both bottom fixing strips (1).

10. The assembled stair finished product protection fixture of claim 1, wherein: Several of the tensioning fasteners (3) and several of the width limiting fasteners (4) are evenly distributed along the length direction of the bottom fixing strip (1) and the top fixing strip (2).

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