Prefabricated building prefabricated stair

Abstract

The utility model relates to the technical field of prefabricated stairs, and discloses an assembly type building prefabricated stair which comprises a stair platform and a prefabricated bottom plate connected to the stair platform, a movable sliding groove is formed in the top face of the prefabricated bottom plate, the movable sliding groove is fixedly embedded in the prefabricated bottom plate, and the prefabricated bottom plate is connected with the stair platform. Clamping grooves are evenly formed in the side wall in the movable sliding groove at equal intervals. The fixing block at the bottom of the prefabricated step is aligned with the movable sliding groove and clamped into the movable sliding groove, the clamping block on the fixing block is clamped with the clamping groove in the movable sliding groove, the prefabricated step can be rapidly installed on the prefabricated bottom plate, and then cement paste is injected into the movable sliding groove through the pouring groove in the connecting pipe. When the step and the bottom plate are assembled, the movable sliding groove and the fixed groove are filled with cement paste, and the step and the bottom plate are firmly fixed together after the cement paste is solidified, so that the step and the bottom plate can be fixed together without installing a large number of screws by using professional tools during assembly, and the construction process is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated staircase technology, and in particular to a prefabricated staircase for prefabricated buildings. Background Technology

[0002] Construction engineering refers to the engineering entity formed by the construction of various buildings and their ancillary facilities and the installation of supporting lines, pipelines and equipment. In order to shorten the construction period of building projects, a large number of prefabricated structures are used in the construction process. A common example is the prefabricated staircase structure, which is generally formed by pre-casting the upper and lower staircase platforms with concrete and leaving inclined support plates between the upper and lower staircase platforms.

[0003] An existing type of prefabricated staircase for prefabricated buildings (Announcement No.: CN220133310U) has at least the following drawbacks: In order to facilitate transportation, existing prefabricated staircases are disassembled into two structures, steps and base plate, for transport. When used, the steps and base plate need to be assembled. Assembly requires the use of professional tools to install a large number of screws, which is time-consuming, labor-intensive, and very troublesome. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a prefabricated staircase for prefabricated buildings.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A prefabricated staircase for prefabricated buildings includes a stair platform and a prefabricated base plate connected to the stair platform. A movable groove is provided on the top surface of the prefabricated base plate and is fixedly embedded in it. Evenly spaced slots are provided on the sidewalls of the movable groove. A prefabricated step is provided above the prefabricated base plate, and a fixing frame is embedded in the prefabricated step. A fixing block is fixedly welded to the bottom side of the fixing frame, and locking blocks are fixedly installed on both sides of the fixing block. The locking blocks can movably engage in the slots. A connecting pipe is provided on the top side of the prefabricated base plate, passing through the prefabricated base plate and the movable groove. A casting groove is provided on the connecting pipe corresponding to the position of the movable groove.

[0007] As a further embodiment of this utility model, the precast step is provided with transverse ribs, which are distributed along the right-angled side of the precast step. Connecting ribs are provided on the transverse ribs, which are triangular in shape, and the transverse ribs are welded to the inner side of the connecting ribs.

[0008] As a further embodiment of this utility model, fixing rods are fixedly installed on both sides of the fixing frame, and the fixing rods are welded to the outer side of the bottom edge of the connecting rib.

[0009] As a further embodiment of this utility model, the fixing frame is provided with a connecting groove, the connecting groove is on the opposite side of the fixing block, and the locking block can be locked into the connecting groove.

[0010] As a further embodiment of this utility model, the top of the fixing block can be inserted into the fixing bracket groove, and the two prefabricated steps can be joined together to form a cuboid.

[0011] As a further embodiment of this utility model, a fixing groove is provided at the top of the fixing block.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In this utility model, by aligning the fixing block at the bottom of the precast step with the movable slide groove and inserting it, the fixing block and the slot in the movable slide groove can be engaged to quickly install the precast step on the precast base plate. Then, cement grout is injected into the movable slide groove through the pouring groove on the connecting pipe. The cement grout will fill the movable slide groove and the fixing groove. After the cement grout solidifies, the step and the base plate will be firmly fixed together. Thus, the step and the base plate can be fixed together without the need to use professional tools to install a large number of screws during assembly, making the construction process more convenient.

[0014] 2. In this utility model, by placing the bottoms of two prefabricated steps together, the fixing block on the top prefabricated step is inserted into the fixing frame on the bottom prefabricated step. The two prefabricated steps can be connected together to form a cuboid by the engagement of the locking block and the connecting groove, thereby reducing transportation space and improving transportation efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a prefabricated staircase for prefabricated buildings proposed in this utility model.

[0016] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a schematic diagram of the internal structure of the prefabricated steps of a prefabricated staircase for prefabricated buildings, as proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the transportation and assembly structure of the prefabricated steps in a prefabricated staircase for prefabricated buildings, as proposed in this utility model.

[0019] In the diagram: 1. Staircase platform; 2. Precast base slab; 3. Precast steps; 4. Movable slide; 5. Slot; 6. Connecting pipe; 7. Casting trough; 8. Fixing frame; 9. Fixing block; 10. Slot; 11. Connecting slot; 12. Transverse rib; 13. Connecting rib; 14. Fixing rod; 15. Fixing slot. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Reference Figure 1 - Figure 4A prefabricated staircase for prefabricated buildings includes a stair platform 1 and a prefabricated base plate 2 connected to the stair platform 1. A movable groove 4 is provided on the top surface of the prefabricated base plate 2, and the movable groove 4 is fixedly embedded in the prefabricated base plate 2. Evenly spaced slots 5 are provided on the side walls of the movable groove 4. A prefabricated step 3 is provided above the prefabricated base plate 2, and a fixing frame 8 is embedded in the prefabricated step 3. A fixing block 9 is fixedly welded to the bottom side of the fixing frame 8, and locking blocks 10 are fixedly installed on both sides of the fixing block 9. The locking blocks 10 can movably engage in the slots 5. A connecting pipe 6 is provided on the top side of the prefabricated base plate 2, connecting the prefabricated base plate 2 and the movable groove. The connecting pipe 6 has a pouring groove 7 at the position corresponding to the movable slide 4, and the top of the fixing block 9 has a fixing groove 15. The fixing block 9 at the bottom of the precast step 3 is aligned with the movable slide 4 and inserted, so that the locking block 10 on the fixing block 9 and the locking groove 5 in the movable slide 4 can be engaged with each other, so that the precast step 3 can be quickly installed on the precast base plate 2. After all the precast steps 3 are installed, cement grout is injected into the connecting pipe 6. The cement grout can be introduced into the movable slide 4 through the pouring groove 7 on the connecting pipe 6. The cement grout will fill the movable slide 4 and the fixing groove 15. After the cement grout solidifies, the step and the base plate will be firmly fixed together.

[0024] In this embodiment, transverse ribs 12 are provided inside the precast step 3. The transverse ribs 12 are distributed along the right-angled side of the precast step 3. Connecting ribs 13 are provided on the transverse ribs 12. The connecting ribs 13 are triangular. The transverse ribs 12 are welded to the inner side of the connecting ribs 13. Fixing rods 14 are fixedly installed on both sides of the fixing frame 8. The fixing rods 14 are welded to the outer side of the bottom edge of the connecting ribs 13. Multiple transverse ribs 12 are welded to the inner side of the connecting ribs 13 to form a stable frame. Then the fixing frame 8 is welded to the fixing rods 14. Then, the precast step 3 is cast.

[0025] In this embodiment, the fixing frame 8 is provided with a connecting groove 11, which is on the opposite side of the fixing block 9. The locking block 10 can be inserted into the connecting groove 11, and the top of the fixing block 9 can be inserted into the groove of the fixing frame 8. The two prefabricated steps 3 can be spliced ​​together to form a cuboid. The fixing block 9 on the top prefabricated step 3 is inserted into the fixing frame 8 on the bottom prefabricated step 3. The two prefabricated steps 3 can be fixed together to form a cuboid by the locking block 10 and the connecting groove 11, which is convenient for transportation.

[0026] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: In use, multiple transverse ribs 12 are welded to the inner side of the connecting ribs 13 to form a stable frame, and then the fixing frame 8 is welded to the fixing rod 14, and then a solid precast step 3 is obtained by casting.

[0027] During installation, align the fixing block 9 at the bottom of the precast step 3 with the movable slide 4 and insert it so that the locking block 10 on the fixing block 9 and the locking groove 5 in the movable slide 4 can be engaged to quickly install the precast step 3 on the precast base plate 2. After all the precast steps 3 are installed, inject cement grout into the connecting pipe 6. The cement grout can be introduced into the movable slide 4 through the pouring groove 7 on the connecting pipe 6. The cement grout will fill the movable slide 4 and the fixing groove 15. After the cement grout solidifies, the steps and the base plate will be firmly fixed together.

[0028] During transportation, the bottoms of the two prefabricated steps 3 are placed together, and the fixing block 9 on the top prefabricated step 3 is inserted into the fixing frame 8 on the bottom prefabricated step 3. The two prefabricated steps 3 can be fixed together to form a cuboid by the engagement of the locking block 10 and the connecting groove 11, which facilitates transportation.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A prefabricated staircase for prefabricated buildings, comprising a stair platform (1) and a prefabricated base plate (2) connected to the stair platform (1), characterized in that, The top surface of the precast base plate (2) is provided with a movable slide groove (4), which is fixedly embedded in the precast base plate (2). The side wall of the movable slide groove (4) is provided with slots (5) evenly spaced. The top of the precast base plate (2) is provided with a precast step (3), and a fixing frame (8) is embedded in the precast step (3). A fixing block (9) is fixedly welded to the bottom side of the fixing frame (8). The fixing blocks (10) are fixedly installed on both sides of the fixing blocks (9). The fixing blocks (10) can be movably engaged in the slots (5). A connecting pipe (6) is provided on the top side of the precast base plate (2). The connecting pipe (6) passes through the precast base plate (2) and the movable slide groove (4). A casting groove (7) is provided on the connecting pipe (6) at the position corresponding to the movable slide groove (4).

2. The prefabricated stair of the assembled building according to claim 1, characterized in that, The precast step (3) is provided with transverse ribs (12), which are distributed along the right-angled side of the precast step (3). Connecting ribs (13) are provided on the transverse ribs (12), which are triangular in shape. The transverse ribs (12) are welded to the inner side of the connecting ribs (13).

3. The prefabricated stair of the assembled building according to claim 1, characterized in that, Fixing rods (14) are fixedly installed on both sides of the fixing frame (8), and the fixing rods (14) are welded to the outside of the bottom edge of the connecting rib (13).

4. The prefabricated stair of the assembled building according to claim 1, characterized in that, The fixing frame (8) is provided with a connecting groove (11), which is on the opposite side of the fixing block (9), and the locking block (10) can be locked into the connecting groove (11).

5. The prefabricated stair of the assembled building according to claim 1, characterized in that, The top of the fixing block (9) can be inserted into the groove of the fixing frame (8), and the two prefabricated steps (3) can be joined together to form a cuboid.

6. The prefabricated stair of the assembled building according to claim 1, characterized in that, The top of the fixing block (9) is provided with a fixing groove (15).

Images