Precise seam splicing structure for prefabricated stairs

Abstract

The utility model provides an accurate seam splicing structure of a prefabricated stair, which relates to the technical field of prefabricated stairs and comprises a prefabricated stair main body, and a positioning groove is arranged on one side of the prefabricated stair main body. According to the lifting device, the clamping rods are pulled out of the clamping holes, then the moving blocks are pulled towards the sides close to the first reset springs, and after the moving blocks move to target positions, the clamping rods are inserted into the corresponding clamping holes to lock the moving blocks, so that the subsequent assembly blocks are not hindered from entering the assembly grooves, and when two prefabricated stairs are lifted, the two prefabricated stairs can be conveniently lifted. The positioning rods on one prefabricated stair body are inserted into the positioning grooves in the other prefabricated stair body, then the assembling blocks enter the assembling grooves, then the clamping rods are pulled out of the clamping holes, under the elastic force effect of the first reset springs, the moving blocks drive the clamping blocks to be squeezed into the clamping grooves, and meanwhile the clamping rods are inserted into the corresponding clamping holes; and the connection between the two prefabricated stair main bodies is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated stairs, in particular to a precise joint structure of prefabricated stairs. Background Art

[0002] With the development of the construction industry, prefabricated stairs have been widely used in various construction projects due to their efficient and convenient construction features. In existing buildings, due to the wide width of the stairs used, prefabricated stairs are often used for construction. Prefabricated stairs are increasingly widely used in construction projects due to their advantages such as convenient construction, fast construction speed, easy quality control and high degree of standardization.

[0003] The prefabricated stairs of the prior art still have the following disadvantages during construction and installation. Prefabricated stairs are often prefabricated in a single body in a factory. During on-site installation, they are assembled by hoisting. The connection and construction quality of the joints between the individual prefabricated stairs have a significant impact on the overall construction quality of the prefabricated stairs. If the joints are not stable enough, large gaps may easily appear between the individual prefabricated stairs, thereby greatly reducing the construction quality of the stairs. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that if the joints are not stable enough, large gaps may easily appear between each individual prefabricated staircase, thereby greatly reducing the construction quality of the stairs, and a precise joint structure for prefabricated stairs is proposed.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a prefabricated staircase precision splicing structure, comprising a prefabricated staircase main body, a positioning groove is provided on one side of the prefabricated staircase main body, a positioning rod is fixedly connected to the other side of the prefabricated staircase main body, an assembly groove is provided on one side of the prefabricated staircase main body, an assembly block is fixedly connected to the other side of the prefabricated staircase main body, a clamping groove is provided on one side of the assembly block, a rectangular groove is provided in the assembly groove, a fixing rod is fixedly connected in the rectangular groove, a moving block is sleeved on the outer surface of the fixing rod, a clamping block is fixedly connected to one side of the moving block, a first return spring is sleeved on the outer surface of the fixing rod, a clamping hole is provided in the assembly groove and on the surface of the moving block, and a clamping rod is clamped in the clamping hole.

[0006] Preferably, an insert rod is fixedly connected to one side of the prefabricated staircase body, and a slot is provided on the other side of the prefabricated staircase body.

[0007] Preferably, a limiting hole is provided on the outer surface of the insertion rod, and a sliding groove is provided in the slot.

[0008] Preferably, a second return spring is fixedly connected in the sliding groove, and a limit block is slidably connected in the sliding groove.

[0009] Preferably, one end of the second return spring is fixedly connected to the limit block, and the length of the positioning rod is greater than the length of the insertion rod.

[0010] Preferably, a first mounting column is installed on one side of the prefabricated staircase body, and a second mounting column is installed on the bottom of the prefabricated staircase body.

[0011] Preferably, the prefabricated staircase body is provided with steps, the tops of the steps are provided with anti-slip grooves, and the outer corners of the steps are provided with protective corner strips.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] When the cam is in the position where the first and second cams are in the same position, the cam is pulled out of the slot and the first and second cams are pulled out of the slot, and the cam is then pulled back to the position where the first and second cams are in the same position.

[0014] 2. In the present invention, the positioning rod on one of the prefabricated stair main bodies is first inserted into the positioning groove on the other prefabricated stair main body, and the insertion rod is inserted into the slot at the same time, so that the limit block is squeezed by the insertion rod and slides into the slide groove, and the second return spring is squeezed by the limit block and begins to shrink. When the insertion rod is inserted to the target position, the elastic force of the second return spring drives the limit block to squeeze into the limit hole, thereby limiting and fixing the insertion rod, further improving the stability between the two prefabricated stair main bodies, and making the gap between the two prefabricated stair main bodies smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of the main structure of a prefabricated staircase with precise jointing structure is proposed for this utility model;

[0016] Figure 2 A three-dimensional diagram of the bottom structure of a prefabricated staircase with precise jointing structure is proposed for this utility model;

[0017] Figure 3 The utility model proposes a rear structural stereogram of a prefabricated staircase precision joint structure;

[0018] Figure 4 The utility model proposes a partial cross-sectional structural stereogram of a prefabricated staircase main body in a prefabricated staircase precision joint structure;

[0019] Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0020] Legend: 1. Prefabricated staircase body; 2. Positioning groove; 3. Positioning rod; 4. Assembly block; 5. Clamping groove; 6. Rectangular groove; 7. Fixed rod; 8. Moving block; 9. Clamping block; 10. First return spring; 11. Clamping hole; 12. Clamping rod; 13. Inserting rod; 14. Slot; 15. Limiting hole; 16. Slide groove; 17. Second return spring; 18. Limiting block; 19. First mounting column; 20. Second mounting column; 21. Step; 22. Anti-slip groove; 23. Protective angle strip; 24. Assembly groove. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: Figure 1 - Figure 5 As shown, the utility model provides a prefabricated staircase precision splicing structure, including a prefabricated staircase main body 1, a positioning groove 2 is opened on one side of the prefabricated staircase main body 1, and a positioning rod 3 is fixedly connected to the other side of the prefabricated staircase main body 1, an assembly groove 24 is opened on one side of the prefabricated staircase main body 1, and an assembly block 4 is fixedly connected to the other side of the prefabricated staircase main body 1, a clamping groove 5 is opened on one side of the assembly block 4, a rectangular groove 6 is opened in the assembly groove 24, a fixing rod 7 is fixedly connected in the rectangular groove 6, a moving block 8 is sleeved on the outer surface of the fixing rod 7, a clamping block 9 is fixedly connected to one side of the moving block 8, and a first return spring 10 is sleeved on the outer surface of the fixing rod 7, and a clamping hole 11 is opened in the assembly groove 24 and on the surface of the moving block 8, and a clamping rod 12 is clamped in the clamping hole 11.

[0024] The effect achieved by the entire embodiment 1 is that, by pulling the clamping rod 12 out of the clamping hole 11, and then pulling the moving block 8 toward the side close to the first return spring 10, the moving block 8 drives the clamping block 9 to move, and the first return spring 10 is squeezed by the moving block 8 and begins to shrink. When the moving block 8 moves to the target position, the clamping rod 12 is inserted into the corresponding clamping hole 11 to lock the moving block 8, thereby not hindering the subsequent assembly block 4 from entering the assembly groove 24. Subsequently, the two prefabricated stair bodies 1 are installed by hoisting, so that the positioning rod 3 on one prefabricated stair body 1 is inserted into the other prefabricated stair body. The positioning groove 2 on the main body 1 is conducive to improving the installation accuracy of the two prefabricated stair main bodies 1. Then the assembly block 4 enters the assembly groove 24, and then the clamping rod 12 is pulled out from the clamping hole 11, so that under the elastic force of the first return spring 10, the moving block 8 drives the clamping block 9 to squeeze into the clamping groove 5, which is convenient for contact and fixation of the two prefabricated stair main bodies 1. At the same time, the clamping rod 12 is inserted into the corresponding clamping hole 11 to lock the moving block 8, making the connection between the two prefabricated stair main bodies 1 more stable, avoiding the appearance of a large gap between the two prefabricated stair main bodies 1, convenient operation, and improved construction efficiency.

[0025] Example 2: Figure 1 - Figure 5 As shown, one side of the prefabricated staircase main body 1 is fixedly connected with an insertion rod 13, and the other side of the prefabricated staircase main body 1 is provided with a slot 14. A limiting hole 15 is provided on the outer surface of the insertion rod 13, and a slide groove 16 is provided in the slot 14. A second return spring 17 is fixedly connected in the slide groove 16, and a limiting block 18 is slidably connected in the slide groove 16. One end of the second return spring 17 is fixedly connected to the limiting block 18. The length of the positioning rod 3 is greater than the length of the insertion rod 13. A first mounting column 19 is installed on one side of the prefabricated staircase main body 1, and a second mounting column 20 is installed at the bottom of the prefabricated staircase main body 1. A step 21 is provided on the prefabricated staircase main body 1, and an anti-slip groove 22 is provided on the top of the step 21. A protective corner strip 23 is provided at the positive corner of the step 21.

[0026] The effect achieved by the entire embodiment 2 is that the positioning rod 3 on one of the prefabricated stair main bodies 1 is first inserted into the positioning groove 2 on the other prefabricated stair main body 1, and the insertion rod 13 is inserted into the slot 14 at the same time, so that the limit block 18 is squeezed by the insertion rod 13 and slides into the slide groove 16, and the second return spring 17 is squeezed by the limit block 18 and begins to shrink. When the insertion rod 13 is inserted to the target position, the elastic force of the second return spring 17 drives the limit block 18 to squeeze into the limit hole 15, thereby limiting and fixing the insertion rod 13, further improving the stability between the two prefabricated stair main bodies 1, and making the gap between the two prefabricated stair main bodies 1 smaller. When the prefabricated stair main body 1 is installed, the first installation column 19 and the second installation column 20 are plugged into the appropriate position, so that the prefabricated stair main body can be accurately installed to prevent its installation position from deviation, and it is also convenient for the hoisting of the prefabricated stair main body 1. The anti-slip groove 22 is provided to increase the friction of the stairs and play an anti-slip role. The protective angle strip 23 provided has a protective effect on users.

[0027] Working principle: When in use, by pulling out the clamping rod 12 from the clamping hole 11, and then pulling the moving block 8 toward the side close to the first return spring 10, the moving block 8 drives the clamping block 9 to move, and the first return spring 10 is squeezed by the moving block 8 and begins to shrink. When the moving block 8 moves to the target position, the clamping rod 12 is inserted into the corresponding clamping hole 11 to lock the moving block 8, thereby not hindering the subsequent assembly block 4 from entering the assembly groove 24. When installing the prefabricated stair main body 1, the first mounting column 19 and the second mounting column 20 are plugged into the appropriate position, the prefabricated stair main body 1 can be accurately installed to prevent its installation position from deviation, and it is also convenient for the hoisting of the prefabricated stair main body 1. When two prefabricated stair main bodies 1 are hoisted and installed, the positioning rod 3 on one of the prefabricated stair main bodies 1 is inserted into the positioning rod 3 on the other prefabricated stair main body 1. The second return spring 17 is squeezed by the limit block 18 and begins to shrink. When the rod 13 is inserted into the target position, the second return spring 17 drives the limit block 18 to squeeze into the limit hole 15, thereby limiting and fixing the rod 13, improving the stability between the two prefabricated stair bodies 1. Then, the clamping rod 12 is pulled out from the clamping hole 11, so that under the elastic action of the first return spring 10, the moving block 8 drives the clamping block 9 to squeeze into the clamping groove 5, and at the same time, the clamping rod 12 is inserted into the corresponding clamping hole 11 to lock the moving block 8, making the connection between the two prefabricated stair bodies 1 more stable, convenient to operate, and improving construction efficiency.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A prefabricated staircase precision joint structure, comprising a prefabricated staircase body (1), characterized in that: A positioning groove (2) is provided on one side of the prefabricated staircase main body (1), and a positioning rod (3) is fixedly connected to the other side of the prefabricated staircase main body (1). An assembly groove (24) is provided on one side of the prefabricated staircase main body (1), and an assembly block (4) is fixedly connected to the other side of the prefabricated staircase main body (1). A clamping groove (5) is provided on one side of the assembly block (4). A rectangular groove (6) is provided in the assembly groove (24), and a fixing rod (7) is fixedly connected in the rectangular groove (6). A moving block (8) is sleeved on the outer surface of the fixing rod (7), and a clamping block (9) is fixedly connected to one side of the moving block (8). A first return spring (10) is sleeved on the outer surface of the fixing rod (7). A clamping hole (11) is provided in the assembly groove (24) and on the surface of the moving block (8), and a clamping rod (12) is clamped in the clamping hole (11).

2. The prefabricated staircase precision joint structure according to claim 1, characterized in that: One side of the prefabricated staircase body (1) is fixedly connected with an insertion rod (13), and the other side of the prefabricated staircase body (1) is provided with a slot (14).

3. The prefabricated staircase precision joint structure according to claim 2, characterized in that: A limiting hole (15) is provided on the outer surface of the inserting rod (13), and a sliding groove (16) is provided in the slot (14).

4. The prefabricated staircase precision joint structure according to claim 3, characterized in that: A second return spring (17) is fixedly connected in the sliding groove (16), and a limiting block (18) is slidably connected in the sliding groove (16).

5. The prefabricated staircase precision joint structure according to claim 4, characterized in that: One end of the second return spring (17) is fixedly connected to the limit block (18), and the length of the positioning rod (3) is greater than the length of the insertion rod (13).

6. The prefabricated staircase precision joint structure according to claim 1, characterized in that: A first mounting column (19) is installed on one side of the prefabricated staircase body (1), and a second mounting column (20) is installed on the bottom of the prefabricated staircase body (1).

7. The prefabricated staircase precision joint structure according to claim 1, characterized in that: The prefabricated staircase body (1) is provided with a step (21), the top of the step (21) is provided with an anti-slip groove (22), and the outer corner of the step (21) is provided with a protective corner strip (23).

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