Rotary steel structure stair

Abstract

The utility model relates to a rotary steel structure stair which comprises a fixing base, a first limiting rod is fixedly installed outside a stair board, a movable sleeve is movably installed outside the first limiting rod, an inserting rod is movably installed inside the movable sleeve, and a connecting rod is fixedly installed outside the movable sleeve. And a second limiting rod is movably installed in the connecting rod, a fixing block is fixedly installed at the bottom of the stair plate, a motor is fixedly installed outside the fixing block, and a two-way threaded rod is movably installed outside the fixing block. According to the rotary steel structure stair, the stair plate at the bottommost part outside the supporting rod drives the bidirectional threaded rod to rotate through the motor, so that the threaded block moves and drives the hinge rod to move, and when the hinge rod enables the sliding block to move, the supporting force of the hinge rod enables the supporting plate to be close to the ground until the supporting plate makes contact with the ground; and the stair plate at the bottommost part of the spiral stair can be supported through the supporting plate, and the stability of the spiral stair is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of spiral staircases, in particular to a spiral steel structure staircase. Background Art

[0002] Spiral staircases are usually called spiral or spiral staircases, which are usually arranged around a single column. They are popular due to their beautiful streamlined shape, elegance, and space saving. Spiral staircases are usually arranged around a single column, with a circular plane. Their platforms and steps are both fan-shaped, and the inner width of the steps is very small. In modern home decoration design, spiral staircases are also widely used.

[0003] Most spiral staircases are of integrated structure, and the treads of the staircases cannot be folded and stored, resulting in that the steel structure staircases can only be disassembled for transportation. The rotatable staircases are only supported by the central column, which makes the treads unstable under the load of people. Therefore, a spiral steel structure staircase is proposed to solve the above problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a spiral steel structure staircase having the advantages of supporting a foldable spiral staircase, etc., solving the problem that most spiral staircases are of integrated structure and the treads of the stairs cannot be folded and stored, resulting in the steel structure staircase having to be disassembled for transportation, and the rotatable staircase is only supported by the central column, which makes the treads easily unstable under the load of people.

[0005] To achieve the above object, the utility model provides the following technical solution: a rotating steel structure staircase, comprising a fixed seat, a support rod is arranged on the top of the fixed seat, a connecting ring is arranged outside the support rod, a stair plate is arranged outside the connecting ring, a connecting device is arranged outside the stair plate, and a supporting structure is arranged at the bottom of the stair plate;

[0006] The connecting device comprises a first limiting rod, a movable sleeve, an insertion rod, a connecting rod and a second limiting rod, the first limiting rod is fixedly installed on the outside of the stair tread, the movable sleeve is movably installed on the outside of the first limiting rod, the insertion rod is movably installed inside the movable sleeve, the connecting rod is fixedly installed on the outside of the movable sleeve, and the second limiting rod is movably installed inside the connecting rod;

[0007] The supporting structure includes a fixed block, a motor, a bidirectional threaded rod, a threaded block, a hinged rod, a support plate and a slider. The bottom of the stair plate is fixedly installed with a fixed block, the outside of the fixed block is fixedly installed with a motor, the outside of the fixed block is movably installed with a bidirectional threaded rod, the outside of the bidirectional threaded rod is threadedly connected with a threaded block, the outside of the threaded block is hinged with a hinged rod, the bottom of the fixed block is hinged with a support plate, and the bottom of the hinged rod is hinged with a slider.

[0008] Furthermore, the support rod passes through the connecting ring and is movably connected to the connecting ring, and the connecting ring is fixedly connected to the stair slab.

[0009] Furthermore, the first limiting rod is located at the top of the stair tread, and the second limiting rod is located at the bottom of the stair tread.

[0010] Furthermore, the second limiting rod passes through the connecting rod and is movably connected to the connecting rod, a plug hole is provided on the top of the stair plate, and the plug rod passes through the movable sleeve and is plugged into the plug hole.

[0011] Furthermore, the output shaft of the motor passes through the fixed block and is fixedly connected to the bidirectional threaded rod, and a sliding groove is provided on the outside of the support plate.

[0012] Furthermore, the sliding block is slidably connected to the sliding groove, and the number of the fixing blocks is two, and the two fixing blocks are respectively located on the left and right sides of the bidirectional threaded rod.

[0013] Furthermore, the number of the support plates is two, and the two support plates are distributed in a relative state.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. For the spiral steel structure staircase, the stair tread at the bottom of the support rod is driven by a motor to rotate the bidirectional threaded rod, so that the threaded block moves and drives the hinged rod to move. When the hinged rod moves the slider, the support force of the hinged rod will make the support plate close to the ground until the support plate contacts the ground. Then, the support plate can support the stair tread at the bottom of the spiral staircase to maintain the stability of the spiral staircase.

[0016] 2. For the rotating steel structure staircase, when multiple stair treads are unfolded one by one, the position of the second limit rod changes with the movement of the stair treads, so that the connecting rod starts to move. At the same time, the movable sleeve rotates outside the first limit rod to complete the movement of the stair treads. The position of the movable sleeve is fixed by the insert rod, so that the unfolded stair treads are limited. At the same time, the first limit rod, the connecting rod and the second limit rod are used to maintain the stability between the two stair treads and support the pressure on the stair treads. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0018] Figure 2 It is a partial front view of the utility model;

[0019] Figure 3 This is a top view of the connection device of the utility model;

[0020] Figure 4 This is an enlarged view of the support structure of the utility model.

[0021] In the figure: 1. fixed seat; 2. support rod; 3. connecting ring; 4. stair board; 5. connecting device; 501. first limit rod; 502. movable sleeve; 503. plug rod; 504. connecting rod; 505. second limit rod; 6. supporting structure; 601. fixed block; 602. motor; 603. bidirectional threaded rod; 604. threaded block; 605. hinged rod; 606. support plate; 607. slider. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0023] See also Figure 1-4 A rotating steel structure staircase in this embodiment includes a fixed seat 1, a support rod 2 is arranged on the top of the fixed seat 1, a connecting ring 3 is arranged on the outside of the support rod 2, a stair board 4 is arranged on the outside of the connecting ring 3, a connecting device 5 is arranged on the outside of the stair board 4, and a supporting structure 6 is arranged at the bottom of the stair board 4.

[0024] The connecting device 5 includes a first limiting rod 501, a movable sleeve 502, an insertion rod 503, a connecting rod 504 and a second limiting rod 505. The first limiting rod 501 is fixedly installed on the outside of the stair board 4, the movable sleeve 502 is movably installed on the outside of the first limiting rod 501, the insertion rod 503 is movably installed inside the movable sleeve 502, the connecting rod 504 is fixedly installed on the outside of the movable sleeve 502, and the second limiting rod 505 is movably installed inside the connecting rod 504.

[0025] The supporting structure 6 includes a fixed block 601, a motor 602, a bidirectional threaded rod 603, a threaded block 604, a hinged rod 605, a support plate 606 and a slider 607. The fixed block 601 is fixedly installed at the bottom of the stair plate 4, the motor 602 is fixedly installed on the outside of the fixed block 601, the bidirectional threaded rod 603 is movably installed on the outside of the fixed block 601, the external thread connection of the bidirectional threaded rod 603 is connected to the threaded block 604, the external hinged of the threaded block 604 is hinged to the hinged rod 605, the bottom of the fixed block 601 is hinged to the support plate 606, and the bottom of the hinged rod 605 is hinged to the slider 607.

[0026] exist Figure 4 In the figure, the support structure 6 is only located at the bottom of a single stair tread 4 at the bottom of the spiral staircase, and supports the stair tread 4 of the spiral staircase through the support plate 606, thereby enhancing the stability of the stair tread 4.

[0027] exist Figure 3 When the insertion rod 503 is plugged into the insertion hole at the top of the stair tread 4, the movement of the two stair treads 4 can be limited so that the stair treads 4 can remain stable when unfolded.

[0028] exist Figure 2 In the figure, the connecting device 5 is located in the middle of two adjacent stair treads 4. The stair treads 4 at the bottom and top of the spiral staircase do not need to be equipped with a connecting device 5. The first limiting rod 501 is located at the leftmost side of the stair tread 4, and the second limiting rod 505 is located in the middle of the bottom of the stair tread 4.

[0029] To sum up, in the spiral steel structure staircase, the stair board 4 at the bottom of the outside of the support rod 2 is driven by the motor 602 to rotate the bidirectional threaded rod 603, so that the threaded block 604 moves and drives the hinged rod 605 to move. When the hinged rod 605 moves the slider 607, the supporting force of the hinged rod 605 will make the support plate 606 close to the ground until the support plate 606 contacts the ground. Then, the stair board 4 at the bottom of the spiral staircase can be supported by the support plate 606 to maintain the stability of the spiral staircase.

[0030] Furthermore, for the rotating steel structure staircase, when multiple stair treads 4 are unfolded one by one, the position of the second limiting rod 505 changes with the movement of the stair treads 4, so that the connecting rod 504 starts to move, and at the same time, the movable sleeve 502 rotates outside the first limiting rod 501 to complete the movement of the stair treads 4. The position of the movable sleeve 502 is fixed by the insertion rod 503, so that the unfolded stair treads 4 are limited. At the same time, the stability between the two stair treads 4 is maintained by the first limiting rod 501, the connecting rod 504 and the second limiting rod 505, and the pressure on the stair treads 4 is supported, which solves the problem that most spiral staircases are of integrated structure and the treads of the stairs cannot be stored and folded, resulting in the steel structure stairs can only be disassembled for transportation, and the rotatable staircase is only supported by the central column, which makes the treads easily unstable under the load of people.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spiral steel structure staircase, comprising a fixing seat (1), characterized in that: A support rod (2) is arranged on the top of the fixing seat (1), a connecting ring (3) is arranged on the outside of the support rod (2), a stair tread (4) is arranged on the outside of the connecting ring (3), a connecting device (5) is arranged on the outside of the stair tread (4), and a supporting structure (6) is arranged on the bottom of the stair tread (4); The connecting device (5) comprises a first limiting rod (501), a movable sleeve (502), an insertion rod (503), a connecting rod (504) and a second limiting rod (505); the first limiting rod (501) is fixedly mounted on the outside of the stair tread (4); the movable sleeve (502) is movably mounted on the outside of the first limiting rod (501); the insertion rod (503) is movably mounted on the inside of the movable sleeve (502); the connecting rod (504) is fixedly mounted on the outside of the movable sleeve (502); and the second limiting rod (505) is movably mounted on the inside of the connecting rod (504); The support structure (6) comprises a fixed block (601), a motor (602), a bidirectional threaded rod (603), a threaded block (604), a hinged rod (605), a support plate (606) and a slider (607); the bottom of the staircase board (4) is fixedly mounted with a fixed block (601); the outside of the fixed block (601) is fixedly mounted with a motor (602); the outside of the fixed block (601) is movably mounted with a bidirectional threaded rod (603); the outside of the bidirectional threaded rod (603) is threadedly connected to a threaded block (604); the outside of the threaded block (604) is hingedly connected with a hinged rod (605); the bottom of the fixed block (601) is hingedly connected with a support plate (606); and the bottom of the hinged rod (605) is hingedly connected with a slider (607).

2. The spiral steel structure staircase according to claim 1, characterized in that: The support rod (2) passes through the connecting ring (3) and is movably connected to the connecting ring (3); the connecting ring (3) is fixedly connected to the stair slab (4).

3. The spiral steel structure staircase according to claim 1, characterized in that: The first limiting rod (501) is located at the top of the stair tread (4), and the second limiting rod (505) is located at the bottom of the stair tread (4).

4. The spiral steel structure staircase according to claim 1, characterized in that: The second limiting rod (505) passes through the connecting rod (504) and is movably connected to the connecting rod (504); a plug hole is provided on the top of the staircase board (4); and the plug rod (503) passes through the movable sleeve (502) and is plugged into the plug hole.

5. The spiral steel structure staircase according to claim 1, characterized in that: The output shaft of the motor (602) passes through the fixed block (601) and is fixedly connected to the bidirectional threaded rod (603), and a sliding groove is provided on the outside of the support plate (606).

6. The spiral steel structure staircase according to claim 5, characterized in that: The sliding block (607) is slidably connected to the sliding groove, and the number of the fixing blocks (601) is two, and the two fixing blocks (601) are respectively located on the left and right sides of the bidirectional threaded rod (603).

7. The spiral steel structure staircase according to claim 5, characterized in that: The number of the support plates (606) is two, and the two support plates (606) are distributed in an opposing state.

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