Assembly type steel stair convenient to install

Abstract

The utility model relates to the technical field of steel stairs, and discloses an assembly type steel stair convenient to install, which comprises a main body assembly, a fixing plate and a pedal, and the pedal is fixed on the fixing plate through welding; the supporting assembly is arranged on the fixing plate and comprises a supporting block fixed to the bottom of the pedal and a supporting piece located on one side of the fixing plate. The utility model has the beneficial effects that: by additionally arranging a group of supporting components and a group of supporting pieces, the auxiliary supporting effect on the pedal can be realized, the gravity borne by the pedal can be effectively shared, and meanwhile, the supporting pieces have an adjusting function, so that when the pedal inclines, the angle of the pedal can be accurately adjusted by adjusting the supporting pieces, and the pedal can be conveniently and quickly adjusted. And when the supporting piece is adjusted again after leveling is completed, the horizontal angle reached by the pedal cannot be changed, and therefore the using stability and safety of the stair are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of steel staircase technology, and in particular to a prefabricated steel staircase that is easy to install. Background Technology

[0002] In the field of architectural decoration, creative steel staircases, as vertical transportation facilities that combine functionality and aesthetics, are increasingly favored by designers and homeowners. Currently, there is a design for an easy-to-install creative steel staircase where the treads are welded to a fixed plate, which is then securely connected to a concrete wall using expansion bolts, leaving one side of the staircase suspended. To enhance the load-bearing capacity of the treads, triangular support plates are installed at the bottom of the treads, welded to the fixed plate to provide support. However, during use, because one side of the staircase is suspended, the treads are prone to gradually tilting downwards from the suspended side under frequent foot traffic and gravity. This tilting not only affects the aesthetics of the staircase but, more importantly, reduces safety, increases the risk of accidental falls, and also poses a potential threat to the overall structural stability of the staircase. Utility Model Content

[0003] In view of the problems existing in the above and / or existing easy-to-install prefabricated steel staircases, this utility model is proposed.

[0004] Therefore, the problem that this utility model aims to solve is that the treads of the creative steel staircase tend to tilt downwards from the unsupported side due to one side being suspended during long-term use, frequent stepping, and the influence of gravity, which affects the safety of use.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an easy-to-install prefabricated steel staircase, which includes a main body component, a fixing plate and a tread, wherein the tread is fixed to the fixing plate by welding;

[0006] A support assembly, disposed on the fixed plate, includes a support block fixed to the bottom of the pedal and a support member located on one side of the fixed plate. The support member includes a fixed block, a fixed rod, an extension rod, a sleeve, and a rotating sleeve. The fixed block is fixed to the fixed plate, the fixed rod is rotatably connected to the fixed block, one end of the extension rod is rotatably connected to the bottom of the pedal, the sleeve is sleeved on the outside of the fixed rod and the extension rod, the sleeve is rotatably connected to the fixed rod, the sleeve has a threaded groove, the sleeve is threadedly connected to one end of the extension rod, and the rotating sleeve is sleeved on the outside of the sleeve and rotatably connected to the sleeve.

[0007] As a preferred embodiment of the easy-to-install prefabricated steel staircase of this utility model, the supporting assembly further includes a locking component disposed within the tread, comprising a gravity ball, a lifting plate, an annular plate, and a locking block. The tread has a sliding groove in which the gravity ball slides. The tread also has a moving groove in which the lifting plate slides. The annular plate is disposed on one side of the sleeve, and the locking block is fixed to one side of the annular plate.

[0008] As a preferred embodiment of the easy-to-install prefabricated steel staircase of this utility model, the sleeve is provided with a first slot and the rotating sleeve is provided with a second slot.

[0009] As a preferred embodiment of the easy-to-install prefabricated steel staircase of this utility model, the locking block can engage with the first locking slot and the second locking slot.

[0010] As a preferred embodiment of the easy-to-install prefabricated steel staircase of this utility model, wherein: an auxiliary plate is fixed to one side of the lifting plate, and a first spring is fixed to one side of the auxiliary plate.

[0011] As a preferred embodiment of the easy-to-install prefabricated steel staircase of this utility model, a guide groove is provided on the annular plate, and a guide column is inserted into the guide groove.

[0012] As a preferred embodiment of the easy-to-install prefabricated steel staircase of this utility model, wherein: the guide column is fitted with a second spring, and the two ends of the second spring are respectively fixed to the annular plate and the rotating sleeve.

[0013] As a preferred embodiment of the easy-to-install prefabricated steel staircase of this utility model, the annular plate has a slope.

[0014] As a preferred embodiment of the easy-to-install prefabricated steel staircase of this utility model, the sliding groove has a certain inclination angle.

[0015] As a preferred embodiment of the easy-to-install prefabricated steel staircase of this utility model, there are two guide columns and two second springs.

[0016] The beneficial effects of this utility model are as follows: by adding a set of support components, the added support components can play an auxiliary support role for the treads, effectively sharing the weight borne by the treads. At the same time, the support components have an adjustment function. When the treads tilt, the angle of the treads can be precisely adjusted by adjusting the support components to restore them to a horizontal state. When the support components are adjusted again after leveling, the horizontal angle of the treads will not change, thereby ensuring the stability and safety of the stairs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 The overall structural diagram of the prefabricated steel staircase for easy installation.

[0019] Figure 2 A structural diagram of the treads for a prefabricated steel staircase designed for easy installation.

[0020] Figure 3 Prefabricated steel staircases for easy installation Figure 2 Enlarged view of the structure at point A in the middle.

[0021] Figure 4 A cross-sectional view of the extension rod of a prefabricated steel staircase designed for easy installation.

[0022] Figure 5 Prefabricated steel staircases for easy installation Figure 4 Enlarged view of the structure at point B in the middle.

[0023] Figure 6 Prefabricated steel staircases for easy installation Figure 4 Enlarged view of the structure at point C. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0027] Example 1

[0028] Reference Figures 1-6 This is the first embodiment of the present utility model. This embodiment provides an easy-to-install prefabricated steel staircase. The easy-to-install prefabricated steel staircase includes a main component 100, a fixing plate 101 and a tread 102. The tread 102 is fixed to the fixing plate 101 by welding. The fixing plate 101 is connected to the concrete wall by expansion bolts.

[0029] The support assembly 200 is disposed on the fixed plate 101 and includes a support block 201 fixed to the bottom of the pedal 102. The support block 201 is fixed to the fixed plate 101 and the pedal 102 by welding. The support block 201 is triangular. The fixed plate 101, the pedal 102 and the support block 201 together form a triangular stable structure, thereby supporting the pedal 102.

[0030] The support member 202 is located on one side of the fixed plate 101 and is used to provide auxiliary support for the pedal 102, while also facilitating the leveling of the tilted pedal 102.

[0031] The support component 202 includes a fixing block 202a, a fixing rod 202b, an extension rod 202c, a sleeve 202d, and a rotating sleeve 202e. The fixing block 202a is fixed on the fixing plate 101 and supports the fixing rod 202b. The fixing rod 202b is rotatably connected to the fixing block 202a. One end of the extension rod 202c is rotatably connected to the bottom of the pedal 102. The sleeve 202d is sleeved on the outside of the fixing rod 202b and the extension rod 202c. The sleeve 202d is rotatably connected to the fixing rod 202b, and their relative positions will not change, but they can only rotate relative to each other. A threaded groove 202d-1 is opened in the sleeve 202d. The sleeve 202d is threadedly connected to one end of the extension rod 202c. The rotating sleeve 202e is sleeved on the outside of the sleeve 202d and is rotatably connected to the sleeve 202d. The fixing rod 202b, the extension rod 202c, and the sleeve 202d are all coaxial.

[0032] An auxiliary block 202f is fixed to the bottom of the pedal 102. The auxiliary block 202f and the sleeve 202d are rotatably connected through the fixed shaft 202g. Since the auxiliary block 202f is fixed to the pedal 102, the position of the fixed block 202a on the fixed plate 101 is fixed. When the pedal 102 is in a horizontal position, after the overall length of the fixed rod 202b, the extension rod 202c and the sleeve 202d is fixed, the three of them, the pedal 102 and the fixed plate 101 will form a triangle, and the included angle of the triangle will not change. As the pedal 102 is stepped on repeatedly, the fixed plate 101 and the pedal 102 are no longer perpendicular. The welding position between the pedal 102 and the fixed plate 101 may deform, causing the pedal 102 to tend to tilt to the suspended side.

[0033] If the sleeve 202d is rotated at this time, the threaded engagement between the threaded groove 202d-1 and one end of the extension rod 202c will increase the length of the extension rod 202c located outside the sleeve 202d, thereby increasing the overall length of the fixed rod 202b, the extension rod 202c and the sleeve 202d. The angle between the pedal 102 and the three components will change, which can lift the tilted end of the pedal 102, change the angle between the pedal 102 and the ground, and thus make the pedal 102 horizontal again.

[0034] Example 2

[0035] Reference Figures 1-6 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0036] Specifically, the support assembly 200 also includes a locking member 203, which is disposed inside the pedal 102. The locking member 203 is configured to allow the rotating sleeve 202e to rotate the sleeve 202d when the pedal 102 is tilted, while the rotating sleeve 202e will not rotate the sleeve 202d when the pedal 102 is horizontal.

[0037] The locking component 203 includes a gravity ball 203a, a lifting plate 203b, an annular plate 203c, and a locking block 203d. The pedal 102 has a sliding groove 102-1, in which the gravity ball 203a slides. The pedal 102 has a moving groove 102-2, in which the lifting plate 203b slides. The annular plate 203c is located on one side of the sleeve 202d, and the locking block 203d is fixed to one side of the annular plate 203c.

[0038] When the pedal 102 is tilted, the gravity ball 203a will move in the direction of the sliding groove 102-1 toward the lifting plate 203b, and the lifting plate 203b will move along the moving groove 102-2 toward the direction of the annular plate 203c, thereby causing the annular plate 203c to drive the locking block 203d to move toward the direction of the rotating sleeve 202e.

[0039] Specifically, the sleeve 202d has a first slot 202d-2, and the rotating sleeve 202e has a second slot 202e-1.

[0040] The first card slot 202d-2 and the second card slot 202e-1 are coaxial and interconnected, and are always coaxial with the card block 203d.

[0041] Specifically, the card block 203d can engage with the first card slot 202d-2 and the second card slot 202e-1.

[0042] The size of the locking block 203d corresponds to the common size of the first locking groove 202d-2 and the second locking groove 202e-1. When the annular plate 203c drives the locking block 203d to move in the direction of the rotating sleeve 202e, the locking block 203d will engage with the first locking groove 202d-2 and the second locking groove 202e-1, so that the rotation of the rotating sleeve 202e can drive the sleeve 202d to rotate.

[0043] When the locking block 203d is not engaged with the first locking slot 202d-2 and the second locking slot 202e-1, even if the rotating sleeve 202e is rotated, the sleeve 202d will not rotate accordingly.

[0044] Specifically, an auxiliary plate 203e is fixed to one side of the lifting plate 203b, and a first spring 203f is fixed to one side of the auxiliary plate 203e. The first spring 203f applies a continuous pushing force to the auxiliary plate 203e for resetting the lifting plate 203b.

[0045] One end of the lifting plate 203b is inclined. When the gravity ball 203a moves toward the lifting plate 203b, it will first contact and press against the inclined surface of the lifting plate 203b, thereby causing the lifting plate 203b to move along the moving groove 102-2 toward the direction of the annular plate 203c. At this time, the first spring 203f is compressed. When the pedal 102 is horizontal, the gravity ball 203a no longer presses against the lifting plate 203b, and the first spring 203f will push the lifting plate 203b back to the initial state and will no longer press against the annular plate 203c.

[0046] Specifically, a guide groove 203c-1 is provided on the annular plate 203c, and a guide post 203g is inserted into the guide groove 203c-1.

[0047] One end of the guide post 203g is fixed to the rotating sleeve 202e. Through the cooperation between the guide post 203g and the guide groove 203c-1, the lifting plate 203b applies pressure to the annular plate 203c, and the annular plate 203c can move smoothly along the direction of the guide post 203g. This allows the annular plate 203c to drive the locking block 203d to move smoothly along the direction of the first locking groove 202d-2 and the second locking groove 202e-1, thereby engaging the locking block 203d with the first locking groove 202d-2 and the second locking groove 202e-1.

[0048] Example 3

[0049] Reference Figures 1-6 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0050] Specifically, the guide post 203g is fitted with a second spring 203h. The two ends of the second spring 203h are fixed to the annular plate 203c and the rotating sleeve 202e, respectively. The second spring 203h is used to push the annular plate 203c to reset. When the lifting plate 203b presses against the annular plate 203c, the second spring 203h will be compressed. When the lifting plate 203b no longer presses against the annular plate 203c, the second spring 203h will push the annular plate 203c to reset, thereby separating the locking block 203d from the first locking groove 202d-2 and the second locking groove 202e-1.

[0051] Specifically, the annular plate 203c has an inclined surface 203c-2.

[0052] The belly of the lifting plate 203b is arc-shaped. When the lifting plate 203b moves along the moving groove 102-2 toward the direction of the annular plate 203c, it will contact the inclined surface 203c-2 and squeeze the inclined surface 203c-2, thereby pushing the annular plate 203c toward the rotating sleeve 202e along the direction of the guide post 203g.

[0053] Specifically, the sliding groove 102-1 has a certain inclination angle.

[0054] The sliding groove 102-1 has an angle of 1 degree with the ground. The end of the sliding groove 102-1 near the fixed plate 101 is lower. When the pedal 102 is horizontal, the gravity ball 203a is located at the lower end of the sliding groove 102-1 and will not squeeze the lifting plate 203b. The bottom of the lifting plate 203b will not squeeze the annular plate 203c.

[0055] Specifically, there are two guide posts 203g and two second springs 203h.

[0056] When in use, when the pedal 102 is tilted, the gravity ball 203a will move from the sliding groove 102-1 toward the lifting plate 203b. The lifting plate 203b will move along the moving groove 102-2 toward the direction of the annular plate 203c. At the same time, the tilt of the pedal 102 itself will also cause the lifting plate 203b to approach the annular plate 203c, contact the inclined surface 203c-2 and squeeze the inclined surface 203c-2, thereby pushing the annular plate 203c toward the rotating sleeve 202e along the direction of the guide post 203g. When the annular plate 203c drives the locking block 203d to move toward the rotating sleeve 202e, the locking block 203d will engage with the first locking groove 202d-2 and the second locking groove 202e-1, so that the rotation of the rotating sleeve 202e can drive the sleeve 202d to rotate.

[0057] At this time, rotating the rotating sleeve 202e will drive the sleeve 202d to rotate. Under the threaded engagement between the threaded groove 202d-1 and one end of the extension rod 202c, the length of the extension rod 202c located outside the sleeve 202d will increase, thereby increasing the overall length of the fixed rod 202b, the extension rod 202c and the sleeve 202d. This will allow the inclined end of the pedal 102 to be lifted up, so that the pedal 102 will be horizontal again.

[0058] When the pedal 102 is horizontal, under the action of gravity, the gravity ball 203a is located at the lower end of the sliding groove 102-1 and will not squeeze the lifting plate 203b. The bottom of the lifting plate 203b will not squeeze the annular plate 203c. The second spring 203h will push the annular plate 203c to reset, thereby separating the locking block 203d from the first locking groove 202d-2 and the second locking groove 202e-1. At this time, rotating the rotating sleeve 202e will not drive the sleeve 202d, thus ensuring that the pedal 102 is in a horizontal state.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A prefabricated steel staircase that is easy to install, characterized in that: include, The main component (100), the fixing plate (101) and the pedal (102) are fixed to the fixing plate (101) by welding; A support assembly (200), disposed on the fixed plate (101), includes a support block (201) fixed to the bottom of the pedal (102), and a support member (202) located on one side of the fixed plate (101). The support member (202) includes a fixed block (202a), a fixed rod (202b), an extension rod (202c), a sleeve (202d), and a rotating sleeve (202e). The fixed block (202a) is fixed to the fixed plate (101), and the fixed rod (202b) is rotatably connected to the fixed block (202a). One end of the extension rod (202c) is rotatably connected to the bottom of the pedal (102). The sleeve (202d) is sleeved on the outside of the fixed rod (202b) and the extension rod (202c). The sleeve (202d) is rotatably connected to the fixed rod (202b). A threaded groove (202d-1) is opened in the sleeve (202d). The sleeve (202d) is threadedly connected to one end of the extension rod (202c). The rotating sleeve (202e) is sleeved on the outside of the sleeve (202d) and rotatably connected to the sleeve (202d).

2. The prefabricated steel staircase for easy installation as described in claim 1, characterized in that: The support assembly (200) further includes a locking element (203) disposed within the pedal (102), comprising a gravity ball (203a), a lifting plate (203b), an annular plate (203c), and a locking block (203d). The pedal (102) has a sliding groove (102-1), in which the gravity ball (203a) slides. The pedal (102) also has a moving groove (102-2), in which the lifting plate (203b) slides. The annular plate (203c) is disposed on one side of the sleeve (202d), and the locking block (203d) is fixed to one side of the annular plate (203c).

3. The prefabricated steel staircase for easy installation as described in claim 2, characterized in that: The sleeve (202d) has a first slot (202d-2), and the rotating sleeve (202e) has a second slot (202e-1).

4. The prefabricated steel staircase for easy installation as described in claim 3, characterized in that: The card block (203d) can engage with the first card slot (202d-2) and the second card slot (202e-1).

5. The easily installable prefabricated steel staircase as described in claim 3 or 4, characterized in that: An auxiliary plate (203e) is fixed to one side of the lifting plate (203b), and a first spring (203f) is fixed to one side of the auxiliary plate (203e).

6. The prefabricated steel staircase for easy installation as described in claim 5, characterized in that: The annular plate (203c) is provided with a guide groove (203c-1), and a guide post (203g) is inserted into the guide groove (203c-1).

7. The prefabricated steel staircase for easy installation as described in claim 6, characterized in that: The guide post (203g) is fitted with a second spring (203h), and the two ends of the second spring (203h) are fixed to the annular plate (203c) and the rotating sleeve (202e), respectively.

8. The prefabricated steel staircase for easy installation as described in claim 7, characterized in that: The annular plate (203c) has an inclined surface (203c-2).

9. The easily installable prefabricated steel staircase as described in claim 7 or 8, characterized in that: The sliding groove (102-1) has a certain tilt angle.

10. The easily installable prefabricated steel staircase as described in claim 9, characterized in that: There are two of the guide posts (203g) and the second spring (203h).

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