High-stability prefabricated concrete stair

Abstract

The utility model discloses a high-stability precast concrete stair, which belongs to the technical field of stairs, and comprises a stair, the left side surface and the right side surface of the stair are fixedly connected with first square plates, and the upper surface of each first square plate is provided with two first rectangular grooves; two second rectangular grooves are formed in the bottom face of each first square plate, two stress springs are fixedly connected to the inner wall of each first square plate, and a clamping block is fixedly connected to the end, close to the stairs, of each stress spring. According to the high-stability prefabricated concrete stair, the clamping blocks are clamped between the rectangular blocks and the first rectangular plate, so that the first rectangular plate and the second rectangular plate can be indirectly connected together, and a roller can be driven to rotate in cooperation with rotation of a rotating shaft in a bearing, so that the friction force borne by the clamping blocks during movement can be reduced; therefore, the problems that when the device is used, the installation process of the stairs is tedious, and certain inconvenience exists are effectively avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of stairs, and in particular relates to a high-stability prefabricated concrete staircase. Background Art

[0002] Stairs are used for transportation between floors and when there is a large height difference. In the current traditional construction process, most of the stairs are constructed using cast-in-place structures. Traditional cast-in-place staircase structures are difficult to support on-site, the quality of construction joints is difficult to control, and the labor and wood consumption are large. With the continuous innovation and development of the construction industry, the market labor price continues to rise, which has led to an increase in construction costs. The construction industry will inevitably gradually develop in the direction of industrialization and factory production. As prefabricated construction technology becomes more and more mature and perfect, the construction industry will use more and more prefabricated models. Prefabricated stairs are an indispensable part of prefabricated structures.

[0003] At present, when the existing prefabricated stairs are installed, it is necessary to open holes on the stairs so that the threaded steel bars implanted in advance inside the platform can pass through the holes on the stairs. After the threaded steel bars pass through the holes, they need to be fastened with bolts to connect the prefabricated building with the platform. After the fastening is completed, the holes on the surface of the prefabricated stairs need to be filled, which causes certain inconveniences.

[0004] To this end, we proposed a high-stability precast concrete staircase to solve the above problems. Utility Model Content

[0005] The purpose of the present application is to solve the problem in the prior art that the installation steps of prefabricated stairs are relatively complicated and thus there are certain inconveniences, and to propose a high-stability prefabricated concrete staircase.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high-stability precast concrete staircase, comprising a staircase, wherein the left side and the right side of the staircase are both fixedly connected with a first square plate, the upper surface of each of the first square plates is provided with two first rectangular grooves, the bottom surface of each of the first square plates is provided with two second rectangular grooves, the inner wall of each of the first square plates is fixedly connected with two force springs, each of the force springs is fixedly connected with a clamping block at one end close to the staircase, the inner wall of each of the clamping blocks is fixedly connected with two groups of fixed plates, the inner wall of each group of the fixed plates is fixedly connected with two bearings, the inner ring of each group of the bearings is commonly fixedly connected with a rotating shaft, the outer surface of each of the rotating shafts is fixedly connected with a roller, the left side and the right side of the staircase are both provided with a second square plate, the upper surface of each of the second square plates is fixedly connected with two rectangular blocks, the left side of each of the rectangular blocks is provided with a clamping groove, the interior of each of the clamping grooves is clamped with the outer surface of the clamping block, and the outer surface of each of the rectangular blocks is slidably connected with the interior of the second rectangular groove.

[0008] Preferably, the inner wall of each of the first square plates is provided with two groups of limiting grooves, and the interior of each group of limiting grooves is slidably connected to a limiting plate.

[0009] Preferably, the upper surface of each of the clamping blocks is fixedly connected to a limiting block, and a side surface of each of the limiting blocks close to the stairs is in contact with the inner wall of the first square plate.

[0010] Preferably, a clamping plate is clamped inside each of the first rectangular grooves, and a bottom surface of each of the clamping plates is in contact with an upper surface of the limiting block.

[0011] Preferably, a groove is formed on the upper surface of each of the clamping plates, and the side surfaces of the two second square plates close to each other are in contact with the left side surface and the right side surface of the stairs respectively.

[0012] Preferably, the side surfaces of the two first square plates that are away from each other are fixedly connected with anti-collision pads, and the outer surface of each of the rollers is in contact with the inner wall of the rectangular block.

[0013] In summary, the technical effects and advantages of this application are:

[0014] By providing the first rectangular plate, the second rectangular plate, the first rectangular groove, the second rectangular groove, the rectangular block and the card slot, and by covering the second rectangular plate with the first rectangular plate, the rectangular block fixed on the upper surface of the second rectangular plate can be extended into the interior of the first rectangular plate through the second rectangular groove, and then by providing the mutual cooperation between the force spring, the card block, the fixed plate, the bearing, the rotating shaft and the roller, the force spring can push the card block to move, so that the card block is clamped between the rectangular block and the first rectangular plate, thereby indirectly connecting the first rectangular plate and the second rectangular plate together, and cooperating with the rotating shaft to rotate inside the bearing, the roller can be driven to rotate, thereby reducing the friction force on the card block when moving, thereby effectively avoiding the problem that the installation process of the stairs is cumbersome and there are certain inconveniences when the device is in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the high-stability prefabricated concrete staircase of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the first rectangular plate of the utility model;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the card block of the utility model;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the bearing of the utility model.

[0019] In the figure: 1. Stairs; 2. Roller; 3. First square plate; 4. Second square plate; 5. Rectangular block; 6. Anti-collision pad; 7. Clamping plate; 8. Groove; 9. First rectangular groove; 10. Clamping groove; 11. Clamping block; 12. Second rectangular groove; 13. Limiting block; 14. Force spring; 15. Limiting plate; 16. Limiting groove; 17. Fixed plate; 18. Rotating shaft; 19. Bearing. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-4A high-stability precast concrete staircase comprises a staircase 1, the left side and the right side of the staircase 1 are fixedly connected with a first square plate 3, the upper surface of each first square plate 3 is provided with two first rectangular grooves 9, the inner wall of each first square plate 3 is provided with two groups of limiting grooves 16, and the interior of each group of limiting grooves 16 is slidably connected with a limiting plate 15. By setting the limiting grooves 16 and the limiting plates 15, the limiting plates 15 can slide inside the limiting grooves 16, so that the position of the limiting plates 15 can be adjusted upward or downward.

[0022] Two second rectangular grooves 12 are provided on the bottom surface of each first square plate 3, and two force springs 14 are fixedly connected to the inner wall of each first square plate 3. A clamping block 11 is fixedly connected to the end of each force spring 14 close to the stair 1, and a limiting block 13 is fixedly connected to the upper surface of each clamping block 11. A side surface of each limiting block 13 close to the stair 1 is in contact with the inner wall of the first square plate 3. By setting the limiting block 13, the movement of the clamping block 11 can be limited by the limiting block 13, so that the clamping block 11 can connect the first square plate 3 and the second square plate 4 together at a suitable position.

[0023] The inner wall of each clamping block 11 is fixedly connected with two groups of fixing plates 17, and the inner wall of each group of fixing plates 17 is fixedly connected with two bearings 19. A clamping plate 7 is clamped inside each first rectangular groove 9, and the bottom surface of each clamping plate 7 is in contact with the upper surface of the limit block 13. By providing the clamping plate 7, the first rectangular groove 9 can be closed by the clamping plate 7 to prevent dust from entering the interior of the first rectangular groove 9.

[0024] The inner rings of each group of bearings 19 are commonly fixedly connected to a rotating shaft 18, and the outer surface of each rotating shaft 18 is fixedly connected to a roller 2. A second square plate 4 is provided on the left side and the right side of the stair 1, and two rectangular blocks 5 are fixedly connected to the upper surface of each second square plate 4. A card slot 10 is provided on the left side of each rectangular block 5, and the interior of each card slot 10 is carded with the outer surface of the card block 11. A groove 8 is provided on the upper surface of each card plate 7, and the side surfaces of the two second square plates 4 that are close to each other are in contact with the left side and the right side of the stair 1 respectively. By providing the groove 8, the card plate 7 can be pulled out through the groove 8, thereby facilitating the application of pulling force thereto.

[0025] The outer surface of each rectangular block 5 is slidably connected to the inside of the second rectangular groove 12, and the side surfaces of the two first square plates 3 that are away from each other are fixedly connected with anti-collision pads 6. The outer surface of each roller 2 is in contact with the inner wall of the rectangular block 5. By providing the anti-collision pads 6, it can be ensured that the stairs 1 will not have a serious collision with the wall during hoisting.

[0026] The working principle of the utility model is as follows: when in use, the staircase 1 can be hoisted by a large crane, and then the two rectangular blocks 5 fixed on the upper surface of the second square plate 4 can be extended into the second rectangular groove 12 through the guidance of the staff. When the rectangular block 5 extends into the second rectangular groove 12, it will squeeze and push the card block 11 to squeeze it towards the force spring 14, so that the card block 11 is squeezed into the first rectangular groove 9. When the card block 11 is level with the card groove 10 opened on the left side of the rectangular block 5, the force spring 14 will push the card block 11 to move into the card groove 10 until the card block 11 is completely extended into the card groove 10. At this time, the card block 11 will be between the rectangular block 5 and the first square plate 3, so that the first square plate 3 and the second square plate 4 can be connected together, and When the block 11 moves, the roller 2 will roll under the action of friction, thereby driving the rotating shaft 18 fixed on the inner wall of the roller 2 to rotate inside the bearing 19, thereby reducing the friction force on the block 11 when moving. When the stair 1 needs to be disassembled, the card plate 7 is pulled out through the groove 8, and then the limit block 13 is pulled to move, thereby driving the block 11 to be pulled out from the inside of the card slot 10, and then the limit plate 15 is pulled downward. When the limit block 13 moves to the side of the limit plate 15 away from the stair 1, the limit plate 15 is released. The limit plate 15 will fall downward due to the action of gravity, so that the limit block 13 can be limited, thereby releasing the connection between the first square plate 3 and the second square plate 4, effectively avoiding the problem of complicated procedures during the installation of the stair 1.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-stability precast concrete staircase, comprising a staircase (1), characterized in that: The left side and the right side of the staircase (1) are both fixedly connected with a first square plate (3), the upper surface of each of the first square plates (3) is provided with two first rectangular grooves (9), the bottom surface of each of the first square plates (3) is provided with two second rectangular grooves (12), the inner wall of each of the first square plates (3) is fixedly connected with two force springs (14), the end of each of the force springs (14) close to the staircase (1) is fixedly connected with a clamping block (11), the inner wall of each of the clamping blocks (11) is fixedly connected with two groups of fixed plates (17), and the inner wall of each group of the fixed plates (17) is fixedly connected with Two bearings (19), the inner rings of each group of the bearings (19) are commonly fixedly connected to a rotating shaft (18), the outer surface of each rotating shaft (18) is fixedly connected to a roller (2), the left side surface of the staircase (1) and the right side surface of the staircase (1) are both provided with a second square plate (4), the upper surface of each second square plate (4) is fixedly connected to two rectangular blocks (5), the left side surface of each rectangular block (5) is provided with a slot (10), the interior of each slot (10) is snap-fitted to the outer surface of the block (11), and the outer surface of each rectangular block (5) is slidably connected to the interior of the second rectangular slot (12).

2. A high stability precast concrete staircase according to claim 1, characterized in that: Two groups of limiting grooves (16) are provided on the inner wall of each of the first square plates (3), and the interior of each group of limiting grooves (16) is slidably connected to a limiting plate (15).

3. The high stability precast concrete staircase according to claim 1, characterized in that: The upper surface of each of the clamping blocks (11) is fixedly connected to a limiting block (13), and a side surface of each of the limiting blocks (13) close to the staircase (1) is in contact with the inner wall of the first square plate (3).

4. The high stability precast concrete staircase according to claim 3 is characterized by: A clamping plate (7) is clamped inside each of the first rectangular grooves (9), and the bottom surface of each of the clamping plates (7) is in contact with the upper surface of the limiting block (13).

5. The high stability precast concrete staircase according to claim 4, characterized in that: A groove (8) is provided on the upper surface of each of the clamping plates (7), and the side surfaces of the two second square plates (4) that are close to each other are in contact with the left side surface of the staircase (1) and the right side surface of the staircase (1), respectively.

6. The high stability precast concrete staircase according to claim 1, characterized in that: The side surfaces of the two first square plates (3) that are away from each other are both fixedly connected with anti-collision pads (6), and the outer surface of each of the rollers (2) is in contact with the inner wall of the rectangular block (5).

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