Fabricated stair

Abstract

The utility model provides an assembly type staircase, which belongs to the technical field of building construction and comprises a staircase body, protective plates, second connecting pieces and a fixing frame, the two sides of the staircase body are respectively provided with the first connecting pieces, the protective plates are respectively arranged on the two sides of the staircase body, and the protective plates are provided with first through holes opposite to the first connecting pieces. The second connecting piece is arranged at the first through hole of the protection plate, one of the first connecting piece and the second connecting piece penetrates through the first through hole and is in threaded connection with the other one, and the fixing frame is installed on the protection plate; the protective plate and the staircase body can be connected together through threaded connection of the first connecting piece and the second connecting piece, the fixing frame is connected with the second connecting piece in an inserted mode, the second connecting piece can be limited, the second connecting piece is prevented from rotating under the influence of vibration, and the safety of the staircase is improved. Therefore, stable connection between the protection plate and the stair body is ensured, and the fabricated stair has good stability and safety.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to an assembled staircase. Background Art

[0002] Prefabricated stairs are a type of staircase system made of aluminum alloy, which is assembled and adjustable. It is often used in construction sites or temporary places to provide workers with safe and convenient up and down passages. Prefabricated stairs have edge protection devices and are used at construction sites to provide safety protection for the edges of the stairs to prevent people from falling.

[0003] The assembled staircase consists of a staircase body and protective plates installed on both sides of the staircase body. The protective plates serve as edge protection. There are threaded rods on both sides of the staircase body. During installation, the threaded rods are passed through the protective plates and nuts are connected to the outside of the protective plates to fix the protective plates to the staircase body.

[0004] However, when workers walk on the stair body, vibrations will be generated, and the nuts will easily loosen under the influence of the vibrations, resulting in an unstable connection between the stair body and the guard plate, which in turn affects the stability and safety of the assembled staircase. Utility Model Content

[0005] Therefore, the technical problem to be solved by the utility model is to overcome the defect in the prior art that the nuts are easily loosened under the influence of vibration, resulting in an unstable connection between the stair body and the protective plate, thereby providing an assembled staircase.

[0006] In order to solve the above technical problems, the utility model provides an assembled staircase, comprising: a staircase body, wherein both sides of the staircase body are respectively provided with a first connecting member;

[0007] A protective plate, respectively installed on both sides of the staircase body, the protective plate having a first through hole opposite to the first connecting member;

[0008] A second connecting member, disposed at the first through hole of the protective plate, wherein one of the first connecting member and the second connecting member passes through the first through hole and is threadedly connected to the other;

[0009] A fixing frame is installed on the protective plate, and the fixing frame is plug-connected with the second connecting piece.

[0010] Optionally, the fixing frame is slidably mounted on the protective plate, and a driving member for pushing the fixing frame to move toward the second connecting member is connected to the protective plate.

[0011] Optionally, a protective tube is connected to the protective plate, the driving member is a screw rod rotatably arranged in the protective tube, a transmission rod is threadedly connected to the surface of the screw rod, and the transmission rod extends out of the protective tube and is connected to the fixing frame.

[0012] Optionally, the protective cylinder is a circular cylinder, and a limiting rod parallel to the screw rod is provided between the inner walls on both sides of the protective cylinder, and the limiting rod passes through the transmission rod.

[0013] Optionally, the transmission rod includes a rod body and a circular disc protruding radially outward, and the circular disc has a second through hole for passing the transmission rod.

[0014] Optionally, there are a plurality of the first connecting members and the second connecting members that are spaced apart, and the fixing frame is plug-connected to the plurality of the second connecting members at the same time.

[0015] Optionally, the first connecting member is a threaded rod, and the second connecting member is a nut.

[0016] Optionally, the fixing frame has a latch extending outward, and the second connecting member has a slot matching the latch.

[0017] Optionally, there are a plurality of slots distributed along the circumferential direction.

[0018] Optionally, the latch has an outwardly protruding bite reinforcement portion, and the bite reinforcement portion has a plurality of portions distributed along the circumferential direction.

[0019] The technical solution of the utility model has the following advantages:

[0020] 1. The assembled staircase provided by the utility model can connect the guard plate and the staircase body together through the threaded connection of the first connecting piece and the second connecting piece. The fixing frame is plug-connected with the second connecting piece, which can limit the second connecting piece and prevent the second connecting piece from rotating under the influence of vibration, thereby ensuring a firm connection between the guard plate and the staircase body, so that the assembled staircase has good stability and safety.

[0021] 2. In the assembled staircase provided by the utility model, the protective plate moves toward the fixing frame under the action of the driving member, thereby making the connection between the protective plate and the fixing frame more stable, and the two are not easily separated, further improving the stability of the connection between the protective plate and the staircase body.

[0022] 3. The assembled staircase provided by the utility model adopts a screw rod as the driving part. Since the screw rod is threadedly connected to the transmission rod, the threaded connection has self-locking properties, which has a better fixing effect on the fixing frame, and the fixing performance will not be attenuated due to the influence of other factors, and the use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A front view of an assembled staircase provided in a first embodiment of the utility model;

[0025] Figure 2 for Figure 1 Enlarged view of the middle guard plate;

[0026] Figure 3 for Figure 2 A magnified image of area A;

[0027] Figure 4 for Figure 3 Exploded diagram.

[0028] Description of reference numerals:

[0029] 1. Staircase body; 2. First connecting member; 3. Protective plate; 4. First through hole; 5. Second connecting member; 6. Fixed frame; 7. Driving member; 8. Protective tube; 9. Transmission rod; 10. Limit rod; 11. Rod body; 12. Disc; 13. Second through hole; 14. Pin; 15. Slot; 16. Occlusal reinforcement part. DETAILED DESCRIPTION

[0030] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] like Figure 1 , Figure 2 As shown, a specific implementation of the assembled staircase provided in this embodiment includes: a staircase body 1, a guard plate 3, a second connecting member 5 and a fixing frame 6. The staircase body 1 has first connecting members 2 on both sides, and the guard plates 3 are respectively installed on both sides of the staircase body 1. The guard plate 3 has a first through hole 4 opposite to the first connecting member 2. The second connecting member 5 is arranged at the first through hole 4 of the guard plate 3. One of the first connecting member 2 and the second connecting member 5 passes through the first through hole 4 and is threadedly connected to the other. The fixing frame 6 is installed on the guard plate 3, and the fixing frame 6 is plug-connected with the second connecting member 5. The first connecting member 2 is fixed on the staircase body 1, and can be welded, clamped, etc. The first connecting member 2 and the second connecting member 5 clamp the guard plate 3 in the middle, and the clamping force is used to fix the guard plate 3 and the staircase body 1 together.

[0035] The assembled staircase provided in this embodiment can connect the guard plate 3 and the stair body 1 together through the threaded connection of the first connecting member 2 and the second connecting member 5. The fixing frame 6 is plug-connected to the second connecting member 5, which can limit the second connecting member 5 and prevent the second connecting member 5 from rotating under the influence of vibration, thereby ensuring a firm connection between the guard plate 3 and the stair body 1, so that the assembled staircase has good stability and safety.

[0036] like Figure 2 , Figure 3 As shown, in the assembled staircase provided in this embodiment, the fixing frame 6 is slidably installed on the protective plate 3, and the protective plate 3 is connected with a driving member 7 for pushing the fixing frame 6 to move toward the second connecting member 5. Specifically, the sliding direction of the fixing frame 6 is up and down. It slides downward to be plugged into the second connecting member 5, and slides upward to be disconnected from the second connecting member 5. The protective plate 3 moves toward the fixing frame 6 under the action of the driving member 7, thereby making the plug-in connection between the protective plate 3 and the fixing frame 6 more stable, and the two are not easy to separate, further improving the stability of the connection between the protective plate 3 and the stair body 1.

[0037] In addition, as a replaceable embodiment, the fixing frame 6 can also be rotatably installed on the protective plate 3, and be plugged and connected with the second connecting member 5 when rotating toward the direction close to the second connecting member 5, and be disconnected from the second connecting member 5 when rotating toward the direction away from the second connecting member 5. The driving member 7 can be a torsion spring, which has a torque to rotate the fixing frame 6 toward the second connecting member 5.

[0038] like Figure 2 , Figure 3 As shown, in the assembled staircase provided by this embodiment, a protective tube 8 is connected to the protective plate 3, and the protective tube 8 can be welded to the protective plate 3. The driving member 7 is a screw rod rotatably arranged in the protective tube 8. The surface of the screw rod is threadedly connected with a transmission rod 9, and the transmission rod 9 is also arranged in the protective tube 8 and can slide up and down in the protective tube 8. The transmission rod 9 extends out of the protective tube 8 and is connected to the fixed frame 6. The driving member 7 adopts a screw rod. Since the screw rod and the transmission rod 9 are threadedly connected, the threaded connection has self-locking properties, which has a better fixing effect on the fixed frame 6, and the fixing performance will not be attenuated due to the influence of other factors, and the use effect is better.

[0039] In addition, as an alternative embodiment, the driving member 7 can also be a spring, one end of which abuts against the inner wall of the protective tube 8, and the other end abuts against the transmission rod 9. Under the push of the spring, the transmission rod 9 drives the fixing frame 6 to move toward the second connecting member 5.

[0040] like Figure 3 As shown, in the assembled staircase provided in this embodiment, the protective cylinder 8 is a circular cylinder, and a limit rod 10 parallel to the screw rod is provided between the inner walls on both sides of the protective cylinder 8. The limit rod 10 passes through the transmission rod 9. The limit rod 10 can limit the transmission rod 9 so that the transmission rod 9 can only slide up and down along the protective cylinder 8, thereby ensuring that the transmission rod 9 pushes the fixed frame 6 to move.

[0041] In addition, as an alternative implementation, the protective tube 8 can also be a rectangular tube, the transmission rod 9 is also a rectangular rod accordingly, and the limiting rod 10 can be omitted. The rectangular protective tube 8 can limit the transmission rod 9.

[0042] like Figure 3 As shown, in the assembled staircase provided in this embodiment, the transmission rod 9 includes a rod body 11 and a disc 12 protruding radially outward, and the disc 12 is provided with a second through hole 13 for passing the transmission rod 9. The diameter of the disc 12 is larger than the diameter of the rod body 11, and the disc 12 contacts with the inner wall of the protective tube 8, reducing the contact area, thereby reducing the friction. At the same time, only the second through hole 13 is provided on the disc 12, and the thickness of the disc 12 is small, so the production and manufacturing is more convenient.

[0043] In addition, as an alternative implementation, the transmission rod 9 may also be a round rod, and the second through hole 13 passes through the transmission rod 9 .

[0044] like Figure 1 As shown, in the assembled staircase provided in this embodiment, there are a plurality of first connecting members 2 and second connecting members 5 arranged at intervals, and the fixing frame 6 is plug-connected with the plurality of second connecting members 5 at the same time. The plurality of first connecting members 2 and second connecting members 5 can increase the contact area and achieve a better connection effect, thereby making the connection between the guard plate 3 and the stair body 1 more stable.

[0045] like Figure 1 As shown, in the assembled staircase provided in this embodiment, the first connecting member 2 is a threaded rod, and the second connecting member 5 is a nut. During installation, the threaded rod passes through the first through hole 4, and then the nut is installed on the threaded rod until the protective plate 3 is clamped between the nut and the staircase body 1. It is more convenient to rotate the nut from the outside.

[0046] In addition, as a replaceable embodiment, the first connecting member 2 can also be a nut. A mounting groove is opened in the stair body 1, and the nut is placed in the mounting groove. The mounting groove and the nut are both hexagonal in shape, which can prevent the nut from rotating in the mounting groove. The second connecting member 5 is a bolt, which passes through the first through hole 4 and is threadedly connected to the nut.

[0047] like Figure 4 As shown, in the assembled staircase provided in this embodiment, the fixing frame 6 has a pin 14 extending outward, and the second connecting member 5 has a slot 15 that matches the pin 14 and extends downward. Its shape is circular, and after being inserted into the slot 15, the second connecting member 5 can be restricted to prevent the second connecting member 5 from rotating.

[0048] In addition, as an alternative implementation, a slot 15 may be provided on the fixing frame 6 , and a plug 14 extending outward may be provided on the second connecting member 5 .

[0049] like Figure 4 As shown, in the assembled staircase provided in this embodiment, there are multiple slots 15 distributed along the circumferential direction, and the pin 14 can cooperate with the multiple slots 15. When the second connecting member 5 is rotated to different angles, it can be plugged and connected with the fixing frame 6, and the connection range is wider.

[0050] like Figure 4 As shown, in the assembled staircase provided in this embodiment, the latch 14 has an outwardly extending bite reinforcement portion 16, and the bite reinforcement portion 16 has multiple bite reinforcement portions 16 distributed along the circumferential direction. The bite reinforcement portions 16 are umbrella-shaped, which can make the connection between the latch 14 and the slot 15 more stable.

[0051] The installation steps of the assembled staircase provided in this embodiment are as follows:

[0052] First, make the threaded rod pass through the first through hole 4, and then push the protective plate 3 toward the stair body 1 until it abuts against the stair body 1, and then connect the nut to the threaded rod, the nut presses the protective plate 3, so that the protective plate 3 and the stair body 1 are connected together, and then rotate the screw rod, the screw rod drives the transmission rod 9 to move downward, and the transmission rod 9 drives the fixing frame 6 to move downward until the pin 14 is inserted into the slot 15, and the assembly is completed.

[0053] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the present utility model.

Claims

1. An assembled staircase, characterized in that: include: A staircase body (1), wherein both sides of the staircase body (1) are respectively provided with first connecting members (2); A protective plate (3) is respectively installed on both sides of the staircase body (1), and the protective plate (3) has a first through hole (4) opposite to the first connecting member (2); A second connecting member (5) is arranged at the first through hole (4) of the protective plate (3), wherein one of the first connecting member (2) and the second connecting member (5) passes through the first through hole (4) and is threadedly connected to the other; A fixing frame (6) is mounted on the protective plate (3), and the fixing frame (6) is plug-connected to the second connecting member (5).

2. The assembled staircase according to claim 1, characterized in that: The fixing frame (6) is slidably mounted on the protection plate (3), and a driving member (7) is connected to the protection plate (3) for pushing the fixing frame (6) to move toward the second connecting member (5).

3. The assembled staircase according to claim 2, characterized in that: The protective plate (3) is connected to a protective tube (8); the driving member (7) is a screw rod rotatably arranged in the protective tube (8); a transmission rod (9) is threadedly connected to the surface of the screw rod; the transmission rod (9) extends out of the protective tube (8) and is connected to the fixing frame (6).

4. The assembled staircase according to claim 3, characterized in that: The protective cylinder (8) is a circular cylinder. A limiting rod (10) parallel to the screw rod is provided between the inner walls on both sides of the protective cylinder (8). The limiting rod (10) passes through the transmission rod (9).

5. The assembled staircase according to claim 4, characterized in that: The transmission rod (9) comprises a rod body (11) and a disc (12) protruding radially outward, and the disc (12) is provided with a second through hole (13) for passing the transmission rod (9).

6. The assembled staircase according to claim 1, characterized in that: The first connecting member (2) and the second connecting member (5) are provided in plurality and arranged at intervals, and the fixing frame (6) is plug-connected to the plurality of the second connecting members (5) at the same time.

7. The assembled staircase according to claim 1, characterized in that: The first connecting member (2) is a threaded rod, and the second connecting member (5) is a nut.

8. The assembled staircase according to any one of claims 1 to 7, characterized in that: The fixing frame (6) has a latch pin (14) extending outward, and the second connecting member (5) has a slot (15) matching the latch pin (14).

9. The assembled staircase according to claim 8, characterized in that: The slots (15) are multiple and distributed along the circumferential direction.

10. The assembled staircase according to claim 8, characterized in that: The latch pin (14) is provided with an outwardly protruding bite reinforcement portion (16), and the bite reinforcement portion (16) has a plurality of portions distributed along the circumferential direction.

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