Prefabricated stair for constructional engineering

Abstract

The utility model relates to the technical field of constructional engineering, in particular to a constructional engineering prefabricated stair which comprises a step, one side of the step is in threaded connection with a first bolt, one side of the first bolt is in threaded connection with a mounting frame, one side of the step is connected with a fixing plate in an inserted mode, and one side of the fixing plate is in threaded connection with a second bolt. A handrail is connected to one side of the step in a buckled mode, and a limiting block is connected to one side of the handrail in a sliding mode. Compared with the prior art, the handrail fixing device has the advantages that according to the working principle, the positioning blocks and the positioning grooves are connected in a matched mode and then fixed through the first bolts, the fixing plates and the steps are matched, a plurality of steps are connected and fixed through the second bolts, and the handrail is fixed through clamping connection of the limiting blocks and the steps; when the steps of a certain part of the stair are damaged, the steps can be easily separated only by loosening the first bolts and the second bolts, the whole stair does not need to be dismantled, and time and labor cost are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering, in particular to a prefabricated staircase for building engineering. Background Art

[0002] Stairs are components used for vertical transportation between floors in a building. They are used for transportation between floors and when there is a large height difference. At present, reinforced concrete stairs are the most commonly used. The construction method of reinforced concrete stairs is to build a template on site and then pour concrete into the template. The stairs cast in this way have better rigidity, but it takes a long time to wait for the concrete to cool, and the construction period is longer. Prefabricated stairs are prefabricated in the factory in advance and can be directly installed at the construction site. There is no need to support the template and water maintenance, which saves water resources and maintenance time, and is conducive to shortening the construction period.

[0003] The existing prefabricated stair slabs are cast in one piece. When a part of the steps is damaged, it needs to be replaced as a whole, resulting in a waste of resources.

[0004] To solve this problem, the utility model provides a prefabricated staircase for construction engineering. Utility Model Content

[0005] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0006] Therefore, one purpose of the present invention is to provide a prefabricated staircase for construction engineering to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, an embodiment of the utility model on one side provides a prefabricated staircase for construction projects, including a step, a first bolt is threadedly connected to one side of the step, a mounting frame is threadedly connected to one side of the first bolt, a fixing plate is inserted into one side of the step, a second bolt is threadedly connected to one side of the fixing plate, a handrail is snap-connected to one side of the step, and a limiting block is slidably connected to one side of the handrail.

[0008] Preferably, any of the above schemes has a positioning block fixedly connected to one side of the step, a first threaded hole is provided on one side of the step, a positioning groove is provided on one side of the mounting frame, a second threaded hole is provided on one side of the positioning groove, the second threaded hole and the first threaded hole are positioned correspondingly, and one side of the first bolt is threadedly connected to one side of the inner surface of the first threaded hole and the second threaded hole.

[0009] Preferably, any of the above schemes is that the outer surface of the positioning block and the inner surface of the positioning groove are matched, and the outer surface of the positioning block and the inner surface of the positioning groove are snap-connected.

[0010] Preferably, any of the above schemes is that a positioning rod is fixedly connected to one side of the step, a positioning hole is provided on one side of the fixing plate, and a third threaded hole is provided on one side of the fixing plate.

[0011] Preferably, any of the above schemes is that the outer surface of the positioning rod and the inner surface of the positioning hole are matched, and the outer surface of the positioning rod and the inner surface of the positioning hole are plug-connected.

[0012] The technical effect achieved by adopting the above solution is that the positioning rod and the positioning hole cooperate with each other to achieve precise positioning, ensuring that the position of the stairs during the assembly process is accurate.

[0013] Preferably, any of the above schemes has a fourth threaded hole on one side of the step, the fourth threaded hole matches the third threaded hole, and one side of the second bolt is threadedly connected to one side of the inner surface of the third threaded hole and the fourth threaded hole.

[0014] Preferably, any of the above schemes is that an inner groove is provided on one side of the step, one side of the handrail is slidably connected to one side of the inner groove, one side of the inner groove is provided with a limiting groove, one side of the handrail is provided with a sliding groove, one side of the sliding groove is fixedly connected to a spring, and one side of the limit block is elastically connected to one side of the spring.

[0015] The technical effect achieved by adopting the above solution is that the sliding connection can prevent shaking or sliding, thereby ensuring the stability and accuracy of the device.

[0016] Preferably, any of the above schemes is that the outer surface of the limit block and the inner surface of the limit groove are matched, the outer surface of the limit block and the limit groove are snap-connected, and a connecting buckle is provided between the handrails.

[0017] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0018] The working principle of the utility model is that firstly, the cooperation connection of the positioning block and the positioning groove can maintain the relative stability of the step and the mounting frame without the fixation of the first bolt, and then fix them by the first bolt, and through the cooperation of the fixing plate and the step, use the second bolt to connect and fix multiple steps, and the handrail is fixed by the clamping connection of the limit block and the step. The clamping method makes the installation simpler and faster, and improves the construction efficiency. When a part of the step is damaged, only the first bolt and the second bolt need to be loosened to easily separate the steps. In this way, when a step needs to be replaced or repaired, it can be handled separately without dismantling the entire staircase, saving time and labor costs.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is a schematic diagram of the structure according to an embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of a three-dimensional structure according to an embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the handrail according to an embodiment of the utility model;

[0024] Figure 4 It is a schematic diagram of a three-dimensional structure of a step according to an embodiment of the utility model;

[0025] Figure 5 It is a schematic diagram of a three-dimensional structure of a step according to an embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of the mounting frame according to an embodiment of the utility model;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the fixing plate according to an embodiment of the utility model.

[0028] In the figure: 1-step, 2-first bolt, 3-mounting frame, 4-fixing plate, 5-second bolt, 6-handrail, 7-limiting block, 11-positioning block, 12-first threaded hole, 13-positioning rod, 14-fourth threaded hole, 15-inner groove, 16-limiting groove, 31-positioning groove, 32-second threaded hole, 41-positioning hole, 42-third threaded hole, 61-sliding groove, 62-spring, 63-connecting buckle. DETAILED DESCRIPTION

[0029] like Figures 1 to 7 As shown, a prefabricated staircase for construction projects includes a step 1, a first bolt 2 is threadedly connected to one side of the step 1, a mounting frame 3 is threadedly connected to one side of the first bolt 2, a fixing plate 4 is inserted into one side of the step 1, a second bolt 5 is threadedly connected to one side of the fixing plate 4, a handrail 6 is snap-connected to one side of the step 1, and a limiting block 7 is slidably connected to one side of the handrail 6.

[0030] A positioning block 11 is fixedly connected to one side of the step 1, a first threaded hole 12 is opened on one side of the step 1, a positioning groove 31 is opened on one side of the mounting frame 3, a second threaded hole 32 is opened on one side of the positioning groove 31, and the second threaded hole 32 and the first threaded hole 12 correspond in position. One side of the first bolt 2 is threadedly connected to one side of the inner surface of the first threaded hole 12 and the second threaded hole 32, and the lower end of the positioning block 11 on one side of the step 1 is spliced ​​corresponding to the position in the positioning groove 31 on one side of the mounting frame 3, and then the step 1 and the mounting frame 3 are fixedly connected by rotating the first bolt 2.

[0031] The outer surface of the positioning block 11 and the inner surface of the positioning groove 31 are matched, and the outer surface of the positioning block 11 and the inner surface of the positioning groove 31 are snap-connected.

[0032] A positioning rod 13 is fixedly connected to one side of the step 1 , a positioning hole 41 is opened on one side of the fixing plate 4 , and a third threaded hole 42 is opened on one side of the fixing plate 4 .

[0033] The outer surface of the positioning rod 13 and the inner surface of the positioning hole 41 are matched, and the outer surface of the positioning rod 13 and the inner surface of the positioning hole 41 are plug-connected.

[0034] A fourth threaded hole 14 is opened on one side of the step 1, and the fourth threaded hole 14 is adapted to the third threaded hole 42. One side of the second bolt 5 is threadedly connected to the third threaded hole 42 and one side of the inner surface of the fourth threaded hole 14. The fixing plate 4 is first threadedly connected to the fourth threaded hole 14 of the step 1 by rotating the second bolt 5, and then the positioning hole 41 is connected by the positioning rod 13 to fix the two adjacent steps 1.

[0035] An inner groove 15 is provided on one side of the step 1, and one side of the handrail 6 is slidably connected to one side of the inner groove 15. A limiting groove 16 is provided on one side of the inner groove 15, and a sliding groove 61 is provided on one side of the handrail 6. A spring 62 is fixedly connected to one side of the sliding groove 61, and one side of the limiting block 7 is elastically connected to one side of the spring 62. The handrail 6 and the inner groove 15 are pressed down in coordination so that the limiting block 7 compresses the spring 62 and slides in the sliding groove 61. When the limiting block 7 slides to one side of the limiting groove 16, the spring 62 is used to reset the limiting block 7 and push it out of the limiting groove 16 to cooperate with the connection.

[0036] The outer surface of the limit block 7 is matched with the inner surface of the limit groove 16, and the outer surface of the limit block 7 and the limit groove 16 are snap-connected. A connecting buckle 63 is provided between the armrests 6. Multiple armrests 6 are interconnected by the connecting buckle 63, so that the armrests 6 can be disassembled quickly and easily, and it is very convenient for later maintenance and replacement.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The working principle of the utility model is that firstly, through the cooperation connection of the positioning block 11 and the positioning groove 31, the relative stability of the step 1 and the mounting frame 3 can be maintained without the fixation of the first bolt 2, and then fixed by the first bolt 2, through the cooperation of the fixing plate 4 and the step 1, the plurality of steps 1 are connected and fixed by the second bolt 5, and the handrail 6 is fixed by the clamping connection of the limit block 7 to the step 1. The clamping method makes the installation simpler and faster, and improves the construction efficiency. When a part of the step 1 is damaged, it only needs to loosen the first bolt 2 and the second bolt 5 to easily separate the step 1 from the step 1. In this way, when a certain step 1 needs to be replaced or repaired, it can be handled separately without dismantling the entire staircase, saving time and labor costs.

Claims

1. A prefabricated staircase for construction engineering, characterized in that: The invention comprises a step (1), a first bolt (2) being threadedly connected to one side of the step (1), a mounting frame (3) being threadedly connected to one side of the first bolt (2), a fixing plate (4) being inserted into one side of the step (1), a second bolt (5) being threadedly connected to one side of the fixing plate (4), a handrail (6) being snap-connected to one side of the step (1), and a limiting block (7) being slidably connected to one side of the handrail (6).

2. A prefabricated staircase for construction engineering according to claim 1, characterized in that: A positioning block (11) is fixedly connected to one side of the step (1); a first threaded hole (12) is provided on one side of the step (1); a positioning groove (31) is provided on one side of the mounting frame (3); a second threaded hole (32) is provided on one side of the positioning groove (31); the second threaded hole (32) and the first threaded hole (12) are located correspondingly; and one side of the first bolt (2) is threadedly connected to one side of the inner surface of the first threaded hole (12) and the second threaded hole (32).

3. A prefabricated staircase for construction engineering according to claim 2, characterized in that: The outer surface of the positioning block (11) and the inner surface of the positioning groove (31) are matched, and the outer surface of the positioning block (11) and the inner surface of the positioning groove (31) are snap-connected.

4. A prefabricated staircase for construction engineering according to claim 3, characterized in that: A positioning rod (13) is fixedly connected to one side of the step (1), a positioning hole (41) is opened on one side of the fixing plate (4), and a third threaded hole (42) is opened on one side of the fixing plate (4).

5. The prefabricated staircase for construction engineering according to claim 4, characterized in that: The outer surface of the positioning rod (13) and the inner surface of the positioning hole (41) are matched, and the outer surface of the positioning rod (13) and the inner surface of the positioning hole (41) are plug-connected.

6. The prefabricated staircase for construction engineering according to claim 5, characterized in that: A fourth threaded hole (14) is provided on one side of the step (1), the fourth threaded hole (14) and the third threaded hole (42) are matched, and one side of the second bolt (5) is threadedly connected to one side of the inner surface of the third threaded hole (42) and the fourth threaded hole (14).

7. The prefabricated staircase for construction engineering according to claim 6, characterized in that: An inner groove (15) is provided on one side of the step (1), one side of the handrail (6) is slidably connected to one side of the inner groove (15), one side of the inner groove (15) is provided with a limiting groove (16), one side of the handrail (6) is provided with a sliding groove (61), one side of the sliding groove (61) is fixedly connected to a spring (62), and one side of the limiting block (7) is elastically connected to one side of the spring (62).

8. The prefabricated staircase for construction engineering according to claim 7, characterized in that: The outer surface of the limit block (7) and the inner surface of the limit groove (16) are matched, the outer surface of the limit block (7) and the limit groove (16) are snap-connected, and a connecting buckle (63) is provided between the handrails (6).

Images