Spiral stair with rotary folding structure

Abstract

The utility model discloses a spiral stair with a rotary folding structure, which relates to the technical field of stairs and comprises a support rod. A plurality of mounted bearings are arranged on the supporting rod, a rotating ring is connected to each mounted bearing in a matched mode, and steps are fixed to the rotating rings through bolts; each step is provided with a through hole convenient for the locking frame to be inserted and fixed through a nut, and the locking frame is positioned at the bottom of the corresponding step; the bottom of the locking frame is connected with a threaded pipe in a matched mode through threads, and the bottom of the threaded pipe is welded to the adjacent extension plate. According to the utility model, the rotating ring can be rotationally adjusted on the mounted bearing of the supporting rod, the locking frame is in threaded connection with the lower threaded pipe and is locked with the upper step through the nut, and the extension plate can move and be locked in the sleeving frame, so that the distance between the two steps can be adjusted, meanwhile, the pedal is convenient to disassemble, fold and put away, and the use is more convenient.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of stairs, in particular to a spiral staircase with a rotating folding structure. Background Art

[0002] A component used for vertical transportation between floors in a building. It is used for transportation between floors and when there is a large height difference. Stairs should also be installed in multi-story and high-rise buildings that have elevators and escalators as the main means of vertical transportation.

[0003] Chinese utility model publication number CN 208996338 U discloses a spiral staircase, comprising a base for connecting to the ground, a central column formed by at least two central column units plugged in along the vertical direction, and a plurality of treads sleeved on the outer periphery of the central column, one end of the tread is provided with a sleeve for sleeved on the outer periphery of the central column, and the tread is spirally arranged around the central column from the bottom to the top of the central column. The spiral staircase provided by the utility model has a simple structure, is easy to assemble, and improves production efficiency;

[0004] The above-mentioned spiral staircase connects two steps through a step connecting rod, so that the distance between the steps is fixed and cannot be changed. Secondly, there is no protective device on the outside of the steps, so that the user has no handholding device, resulting in a lack of installation sense. For this reason, we provide a spiral staircase with a rotating folding structure, which is connected to the threaded tube below through a locking frame. The extension plate fixed by the threaded tube can slide in the locking frame, so that the distance between the two steps can be adjusted, which has better applicability. Secondly, the outer connecting frame and support plate can play a protective role, effectively compensating for the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a spiral staircase with a rotating and folding structure to solve the problems raised in the background technology.

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

[0007] A spiral staircase with a rotating and folding structure comprises a support rod; a plurality of bearings with seats are arranged on the support rod, and each bearing with seats is matched and connected with a rotating ring, and a step is fixed to the rotating ring by bolts; each step is provided with a through hole for facilitating the insertion of a locking frame, and is fixed by a nut, and the locking frame is located at the bottom of the corresponding step; the bottom of the locking frame is matched and connected with a threaded tube by a thread, and the bottom of the threaded tube is welded to the adjacent extension plate.

[0008] As a further technical solution of the utility model, the outer side of the extension plate is sleeved with an adjacent sleeve frame and fixed by bolts; the sleeve frame is sleeved on a seat bearing on the outer side of the adjacent threaded pipe.

[0009] As a further technical solution of the utility model, the other side of the step is fixed to the connecting frame by bolts.

[0010] As a further technical solution of the utility model, a support plate is fixed to the connecting frame by bolts.

[0011] As a further technical solution of the utility model, both ends of the connecting frame and the support plate are provided with circular holes for facilitating the insertion of the reinforcing rod, and the bottom of the reinforcing rod is fixed to the base plate by bolts.

[0012] As a further technical solution of the utility model, the bottom plate is in a disc shape and is welded to the support rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, the rotating ring can be rotated and adjusted on the seat bearing of the support rod, the locking frame is threadedly connected to the threaded pipe below and locked with the upper step through a nut, and the extension plate can be moved and locked in the sleeve frame, so that the distance between the two steps can be adjusted, and it is convenient to disassemble, fold and put away, and it is more convenient to use;

[0015] 2. In the utility model, the sleeve frame is connected with the threaded pipe below, so as to play a supporting role and ensure the stability of the step;

[0016] 3. In the present invention, the connecting frame cooperates with the supporting plate to play a protective role, and secondly, the connecting frame plays a supporting and fixing role. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 2 This utility model Figure 1 Schematic diagram from another perspective.

[0019] Figure 3 This utility model Figure 2 Schematic diagram from another perspective.

[0020] Figure 4 This utility model Figure 1 A partial enlarged view of point A.

[0021] Figure 5 This utility model Figure 2 A partial enlarged view of point B.

[0022] In the figure: 1-base plate, 2-support rod, 3-rotating ring, 4-step, 5-locking frame, 6-sleeve frame, 7-extension plate, 8-threaded pipe, 9-support plate, 10-reinforcement rod, 11-connecting frame. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-5 In an embodiment of the utility model, a spiral staircase with a rotating folding structure includes a support rod 2; a plurality of bearings with seats are arranged on the support rod 2, and each bearing with seats is matched and connected with a rotating ring 3, and a step 4 is fixed to the rotating ring 3 by bolts; each step 4 is provided with a through hole for facilitating the insertion of a locking frame 5, and is fixed by a nut, and the locking frame 5 is located at the bottom of the corresponding step 4; the bottom of the locking frame 5 is matched and connected with a threaded tube 8 by a thread, and the bottom of the threaded tube 8 is welded to the adjacent extension plate 7.

[0025] By adopting the above technical solution, the rotating ring 3 can be rotated and adjusted on the seat bearing of the support rod 2, the locking frame 5 is threadedly connected to the threaded tube 8 below, and is locked with the step 4 above through a nut, and the extension plate 7 can be moved and locked in the socket frame 6, so that the distance between the two steps 4 can be adjusted, and it is convenient to disassemble, fold and put away, and it is more convenient to use.

[0026] In this embodiment, the outer side of the extension plate 7 is sleeved on the adjacent sleeve frame 6 and fixed by bolts; the sleeve frame 6 is sleeved on the seat bearing on the outer side of the adjacent threaded tube 8.

[0027] By adopting the above technical solution, the sleeve frame 6 is connected with the threaded tube 8 below, so as to play a supporting effect and ensure the stability of the step 4.

[0028] In this embodiment, the other side of the step 4 is fixed to the connecting frame 11 by bolts.

[0029] Furthermore, a support plate 9 is fixed to the connecting frame 11 by bolts.

[0030] By adopting the above technical solution, the connecting frame 11 cooperates with the support plate 9 to play a protective role, and secondly, the connecting frame 11 plays a supporting and fixing role.

[0031] In this embodiment, both ends of the connecting frame 11 and the support plate 9 are provided with circular holes for inserting the reinforcing rod 10 , and the bottom of the reinforcing rod 10 is fixed to the bottom plate 1 by bolts.

[0032] Furthermore, the bottom plate 1 is in a disc shape, and the bottom plate 1 is welded to the support rod 2 .

[0033] By adopting the above technical solution, the reinforcing rod 10 plays a role in strengthening the structural strength of the connecting frame 11 and the supporting plate 9, and the bottom plate 1 below plays a supporting role.

[0034] The working principle of the utility model is as follows: the rotating ring 3 can be rotated and adjusted on the seat bearing of the support rod 2, the locking frame 5 is threadedly connected to the threaded tube 8 below, and is locked with the upper step 4 through a nut, and the extension plate 7 can be moved and locked in the sleeve frame 6, so that the distance between the two steps 4 can be adjusted, and it is convenient to disassemble, fold and put away, and it is more convenient to use; the sleeve frame 6 is connected with the threaded tube 8 below, so that it can play a supporting effect and ensure the stability of the step 4; the connecting frame 11 cooperates with the support plate 9 to play a protective role, and secondly, the connecting frame 11 plays a supporting and fixing role; the reinforcing rod 10 plays a role in strengthening the structural strength of the connecting frame 11 and the support plate 9, and the bottom plate 1 below plays a supporting role.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A spiral staircase with a rotating folding structure, Features: The invention comprises a support rod (2); a plurality of bearing seats are arranged on the support rod (2), and each bearing seat is matched and connected with a rotating ring (3), and a step (4) is fixed on the rotating ring (3) by bolts; each step (4) is provided with a through hole for facilitating the insertion of a locking frame (5), and is fixed by a nut, and the locking frame (5) is located at the bottom of the corresponding step (4); the bottom of the locking frame (5) is matched and connected with a threaded tube (8) by a thread, and the bottom of the threaded tube (8) is welded to the adjacent extension plate (7).

2. A spiral staircase with a rotating folding structure according to claim 1, Features: The outer side of the extension plate (7) is sleeved on the adjacent sleeve frame (6) and fixed by bolts; the sleeve frame (6) is sleeved on the seat bearing on the outer side of the adjacent threaded tube (8).

3. A spiral staircase with a rotating folding structure according to claim 1, Features: The other side of the step (4) is fixed to a connecting frame (11) by means of bolts.

4. A spiral staircase with a rotating folding structure according to claim 3, Features: A support plate (9) is fixed to the connecting frame (11) via bolts.

5. A spiral staircase with a rotating folding structure according to claim 4, Features: Both ends of the connecting frame (11) and the supporting plate (9) are provided with circular holes for facilitating the insertion of the reinforcing rod (10), and the bottom of the reinforcing rod (10) is fixed to the bottom plate (1) by bolts.

6. A spiral staircase with a rotating folding structure according to claim 5, Features: The bottom plate (1) is in the shape of a disk, and the bottom plate (1) is welded to the support rod (2).

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