Steel stair with hidden structure

Abstract

The utility model discloses a steel stair with a hidden structure, which comprises a first support rod, a mounting plate and an extension rod, a plurality of limit grooves are arranged on one side of the first support rod, the limit grooves are distributed at equal intervals, and each limit groove is connected with a limit column; each limiting column is provided with one side of the corresponding second supporting rod. According to the ladder stand, the limiting grooves and the limiting columns are arranged and are connected in a sliding mode, and in the using process, when the ladder stand needs to be used, an operator pushes and pulls the second supporting rods to drive the limiting columns to slide outwards along the limiting grooves; and meanwhile, a second connecting rod at the top of the second supporting rod drives a second hinge to synchronously slide outwards along a sliding groove, so that the distance between the first supporting rod and the second supporting rod is increased, and a crawling ladder capable of climbing is formed.

Description

Technical Field

[0001] The utility model specifically relates to the technical field related to hidden ladders, in particular to a steel staircase with a hidden structure. Background Art

[0002] A concealed ladder is a recessed design that provides a concealed access between floors. This type of ladder is usually mounted on a wall or under the floor and can be completely retracted or hidden when not in use to save space and maintain the consistency of the overall design. Concealed ladders are usually made of retractable materials such as metal or plastic. They use slide rails or telescopic devices, and are unfolded and folded manually or electrically to facilitate the entry and exit of users. This type of ladder is suitable for places where the climbing passage needs to be frequently used but does not want to occupy too much space, such as small houses, loft apartments or offices. The "hidden ladder" disclosed in reference publication number "CN102644438B" includes a ladder main body fixed on the tower body and a plurality of footrests evenly arranged along the height direction of the ladder main body. The footrests are hinged with the ladder main body, and the footrests are connected to a driving mechanism that drives the rotation around the hinge to unfold or fold. The footrests are in an unfolded state when they are perpendicular to the ladder main body, and in a hidden state when the footrests are folded with the ladder main body; the driving mechanism includes a control rope that passes through all the footrests in sequence and a fixed pulley arranged at the top of the pipe tower, the control rope bypasses the fixed pulley, and both ends of the control rope are hooked at the bottom of the ladder main body and the two ends of the control rope are different in the height direction; a toggle member that can toggle the footrest to rotate is fixed on the control rope, and each footrest corresponds to a toggle member. The present invention has the advantages of small space occupation and convenient use.

[0003] The ladders currently used for electric towers are generally external ladders consisting of fixed ladder frames and foot spikes. However, the available space of the electric tower is very small. Such external ladders are generally huge in size, so they occupy a large space outside the tower, affecting the appearance. In addition, unrelated personnel can climb the electric tower at will, which is prone to danger. Therefore, there are disadvantages in use. Utility Model Content

[0004] The utility model aims to provide a steel staircase with a hidden structure to solve the problem that the ladders currently used for power towers mentioned in the above background technology are generally external ladders composed of fixed ladder frames and foot nails, but the available space of the power tower is very narrow, and the size of such external ladders is generally very large, so they occupy a large space outside the tower body, affecting the appearance, and irrelevant personnel can also climb the power tower at will, which is easy to cause danger, so there are disadvantages in use.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A steel staircase with a hidden structure includes a first support rod, a mounting plate and an extension rod. One side of the first support rod is provided with a plurality of limit grooves, and the limit grooves are distributed at equal intervals, and each limit groove is connected to a limit column; each of the limit columns is arranged on one side of the second support rod.

[0007] As a further solution of the utility model: the connection mode between the limiting groove and the limiting column is a sliding connection, and the limiting column cooperates with the second support rod and the limiting groove to form a sliding structure.

[0008] As a further solution of the utility model: a first connecting rod is installed on the top of the first support rod, and the first connecting rod is rotatably connected to the first hinge, and the first hinge is fixedly connected to the mounting plate.

[0009] As a further solution of the utility model: a slide groove is provided on one side of the mounting plate, and the slide groove cooperates with the second hinge and the second support rod to form a sliding structure.

[0010] As a further solution of the utility model: a second connecting rod is installed on the top of the second support rod, and the second connecting rod is rotatably connected to the second hinge, and the second hinge is slidably connected to the sliding groove.

[0011] As a further solution of the utility model: there are two extension rods, and the two extension rods are slidably connected to the bottom of the first support rod and the bottom of the second support rod respectively, and at the same time, the two extension rods and the bottom of the first support rod and the bottom of the second support rod are provided with limiting holes.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a limit groove and a limit column, and the connection mode of the limit groove and the limit column is a sliding connection. During use, when the ladder needs to be used, the operator pushes and pulls the second support rod to drive the limit column to slide outward along the limit groove. At the same time, the second connecting rod on the top of the second support rod drives the second hinge to slide outward along the slide groove synchronously, thereby increasing the distance between the first support rod and the second support rod to form a climbable ladder; after use, the first support rod is pushed inward again to slide inward, shortening the distance between the first support rod and the second support rod, so that they are merged together, reducing the occupied space, and avoiding the large size affecting the appearance.

[0014] 2. The utility model is provided with a first hinge and a second hinge, and the first support rod and the second support rod are rotatably connected to the first hinge and the second hinge respectively. Therefore, during use, the first support rod and the second support rod can be rotatably connected around the first hinge and the second hinge to adjust the angle, thereby improving the applicability of the ladder.

[0015] 3. The utility model is provided with an extension rod. When the first support rod and the second support rod need to be rotated around the first hinge and the second hinge respectively to adjust the angle, because the angle between the first support rod and the second support rod and the mounting plate is increased, the length of the first support rod and the second support rod needs to be increased so that they can contact the ground to stabilize the ladder. Then, the extension rod can be used to increase the length of the first support rod and the second support rod to solve the problem of insufficient length for angle adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 This utility model Figure 1 Side view of.

[0018] Figure 3 It is a plan front view structural schematic diagram of the utility model.

[0019] Figure 4 It is a schematic diagram of the planar side view structure of the utility model.

[0020] Figure 5 This utility model Figure 1 A partial enlarged schematic diagram of .

[0021] In the figure: 1-first support rod, 2-limiting groove, 3-second support rod, 4-limiting column, 5-first connecting rod, 6-first hinge, 7-second connecting rod, 8-second hinge, 9-slide groove, 10-mounting plate, 11-extension rod, 12-limiting hole, 13-latch pin. 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 1-5 In an embodiment of the utility model, a steel staircase with a hidden structure includes a first support rod 1, a mounting plate 10 and an extension rod 11. One side of the first support rod 1 is provided with a plurality of limit grooves 2, and the limit grooves 2 are distributed at equal intervals, and each limit groove 2 is connected to a limit column 4; each of the limit columns 4 is arranged on one side of the second support rod 3.

[0024] More specifically, each limiting groove 2 corresponds to a limiting column 4 one by one, and each limiting groove 2 and a limiting column 4 form a step of a ladder.

[0025] As a further illustration of this embodiment, the first support rod 1 and the second support rod 3 have the same length, and the first support rod 1 and the second support rod 3 are parallel to each other.

[0026] In this embodiment, the connection between the limiting groove 2 and the limiting column 4 is a sliding connection, and the limiting column 4 cooperates with the second support rod 3 and the limiting groove 2 to form a sliding structure.

[0027] More specifically, the limiting groove 2 and the first support rod 1 are connected by welding, and the transverse axis of the limiting groove 2 is perpendicular to the side surface of the first support rod 1 .

[0028] As a further description of this embodiment, the limiting column 4 and the second support rod 3 are connected by welding, and the transverse axis of the limiting column 4 is perpendicular to the side surface of the second support rod 3 .

[0029] In this embodiment, a first connecting rod 5 is installed on the top of the first support rod 1 , and the first connecting rod 5 is rotatably connected to the first hinge 6 , while the first hinge 6 is fixedly connected to the mounting plate 10 .

[0030] More specifically, the first hinge 6 and the mounting plate 10 are connected by flange connection, which improves the convenience of disassembly.

[0031] As a further illustration of this embodiment, when in use, the mounting plate 10 is fixed to the outside of the power tower, and the angle is adjusted through the first hinge 6 .

[0032] In this embodiment, a slide groove 9 is provided on one side of the mounting plate 10 , and the slide groove 9 cooperates with the second hinge 8 and the second support rod 3 to form a sliding structure.

[0033] More specifically, the slide groove 9 is slidably connected to the second hinge 8 , and the second hinge 8 is embedded in the slide groove 9 .

[0034] As a further illustration of this embodiment, when in use, pushing and pulling the second support rod 3 drives the second hinge 8 to slide along the slide groove 9, thereby changing the distance between the second support rod 3 and the first support rod 1.

[0035] In this embodiment, a second connecting rod 7 is installed on the top of the second support rod 3, and the second connecting rod 7 is rotatably connected to the second hinge 8, and the second hinge 8 is slidably connected to the slide groove 9.

[0036] More specifically, the second connecting rod 7 and the second supporting rod 3 are connected by welding, and the transverse axis of the second connecting rod 7 is perpendicular to the side surface of the second supporting rod 3 .

[0037] As a further illustration of this embodiment, when in use, the second support rod 3 drives the second connecting rod 7 to drive the second hinge 8 to move.

[0038] In this embodiment, two extension rods 11 are provided, and the two extension rods 11 are slidably connected to the bottom of the first support rod 1 and the bottom of the second support rod 3 respectively. At the same time, limiting holes 12 are provided at the bottom of the two extension rods 11 and the bottom of the first support rod 1 and the bottom of the second support rod 3.

[0039] More specifically, when in use, the two extension rods 11 slide along the bottom of the first support rod 1 and the bottom of the second support rod 3 , thereby changing the length of the first support rod 1 and the second support rod 3 .

[0040] As a further explanation of this embodiment, the two extension rods 11 are synchronously moved to appropriate positions, and the two extension rods 11 are respectively fixed along the limiting holes 12 using the latches 13 .

[0041] The working principle of the utility model is as follows: when in use, the mounting plate 10 is first fixed on the electric tower. At this time, the initial state of the ladder is that the first support rod 1 and the second support rod 3 are combined together, occupying a relatively small space; then the operator pushes and pulls the second support rod 3 to drive the limiting column 4 to slide outward along the limiting groove 2 on the first support rod 1. At the same time, the connecting rod 7 at the top of the second support rod 3 drives the second hinge 8 to slide outward synchronously along the sliding groove 9, thereby increasing the distance between the first support rod 1 and the second support rod 3, and each limiting column 4 and limiting groove 3 form a pedal, and then the first support rod 1 and the second support rod 3 are synchronously moved around the first hinge 6 and the second hinge as needed. The chain 8 is adjusted to a suitable position, and then the two extension rods 11 at the bottom of the first support rod 1 and the second support rod 3 are extended outward until they touch the ground, and the two extension rods 11 are fixed along the limiting holes 12 using the latch 13, and the steps of using the ladder are completed; after use, the latch 13 is pulled out to retract the two extension rods 11, and the second support rod 3 is pushed and pulled to drive the limiting column 4 to slide along the limiting groove 2. At the same time, the second hinge 8 at the top of the second support rod 3 slides along the slide groove 9 toward the direction of the first hinge 6 until the second support rod 3 and the first support rod 1 are merged together. At this time, the ladder is retracted together to avoid space occupation and reduce the impact on aesthetics.

[0042] 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.

[0043] 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 steel staircase with a hidden structure, characterized in that: The invention comprises a first support rod (1), a mounting plate (10) and an extension rod (11); a plurality of limit grooves (2) are arranged on one side of the first support rod (1), and the limit grooves (2) are distributed at equal intervals, and each limit groove (2) is connected to a limit column (4); each limit column (4) is arranged on one side of the second support rod (3).

2. The steel staircase with a hidden structure according to claim 1, characterized in that: The connection mode between the limiting groove (2) and the limiting column (4) is a sliding connection, and the limiting column (4) cooperates with the second support rod (3) and the limiting groove (2) to form a sliding structure.

3. The steel staircase with a hidden structure according to claim 1, characterized in that: A first connecting rod (5) is installed on the top of the first support rod (1), and the first connecting rod (5) is rotatably connected to the first hinge (6), while the first hinge (6) is fixedly connected to the mounting plate (10).

4. The steel staircase with a hidden structure according to claim 1, characterized in that: A sliding groove (9) is provided on one side of the mounting plate (10), and the sliding groove (9) cooperates with the second hinge (8) and the second support rod (3) to form a sliding structure.

5. The steel staircase with a hidden structure according to claim 1, characterized in that: A second connecting rod (7) is installed on the top of the second support rod (3), and the second connecting rod (7) is rotatably connected to the second hinge (8), while the second hinge (8) is slidably connected to the slide groove (9).

6. The steel staircase with a hidden structure according to claim 1, characterized in that: The extension rods (11) are provided with two, and the two extension rods (11) are slidably connected to the bottom of the first support rod (1) and the bottom of the second support rod (3) respectively, and the two extension rods (11) and the bottom of the first support rod (1) and the bottom of the second support rod (3) are all provided with limiting holes (12).

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