Step for stairs

Abstract

The utility model provides a stair step and relates to the technical field of stairs, the stair step is provided with a supporting frame and a pedal, the pedal is arranged in the supporting frame, connecting lug plates are arranged on the two sides of the pedal, the connecting lug plates are arranged in the vertical direction and attached to the inner side of the supporting frame, and the connecting lug plates are fixedly connected with the supporting frame; the connecting lug plates are arranged on the two sides of the pedal, the connecting mode of the pedal and the supporting frames is changed through the arrangement of the connecting lug plates, the pedal is not erected on the upper surface of the angle iron any more, when the pedal bears the load, downward pressure is converted into pulling force towards the supporting frames on the two sides, and therefore the strength and stability of the pedal are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of stairs, and more particularly to a step for a stair. BACKGROUND

[0002] The stair is a traffic tool with an inclined angle, and the steps are arranged in a ladder shape; the stair can be provided with different inclined angles according to requirements to adapt to different use places; the mobile stair commonly used in the aircraft passenger stair car and other special vehicles needs to meet the requirements of light weight, high strength, easy assembly and transportation.

[0003] The existing step for a stair mainly has the following problems: the step is made of metal material, the metal material is heavy, which increases the load, is not conducive to transportation and transfer, and has a high production cost; the step is generally supported on the angle iron of the stair, and the step is prone to deformation, which results in low maximum bearing capacity and poor strength of the stair. SUMMARY

[0004] The utility model aims at making up for the deficiency of prior art, and provides a step for a stair, and the technical scheme adopted by the application is:

[0005] The step for a stair is provided with a support frame and a step plate, the step plate is arranged in the support frame, the step plate is provided with connecting lug plates on both sides, the connecting lug plates are arranged along the vertical direction and abut against the inner side of the support frame, and the connecting lug plates and the support frame are fixedly connected with each other.

[0006] Optionally, the connecting lug plates are fixedly arranged at the lower end of the step plate.

[0007] Optionally, the step plate is made of carbon fiber material.

[0008] Optionally, the connecting lug plates are provided with angle irons, the upper end surface of the angle iron abuts against the lower end surface of the step plate, and the side surface of the angle iron abuts against the inner side surface of the connecting lug plate.

[0009] Optionally, the step plate is further provided with a connecting plate, the connecting plate is fixedly arranged between adjacent step plates and is integrally formed with the step plate.

[0010] Optionally, a reinforcing rib is further arranged between the step plate and the connecting plate, the upper end surface of the reinforcing rib abuts against the lower side surface of the step plate, and the lower end surface of the reinforcing rib abuts against the rear side surface of the connecting plate.

[0011] Optionally, the reinforcing rib is made of carbon fiber material.

[0012] Optionally, the upper end surface of the step plate is further provided with an anti-skid groove, the anti-skid groove is provided with an anti-skid strip, and the anti-skid strip is made of aluminum alloy material.

[0013] Optionally, the step plate is filled with a core material.

[0014] Optionally, the support frame is provided with side plates and a cross beam, the cross beam is fixed between the side plates; the step plate is arranged between the side plates, and the connecting lug plate is fixed to the inner side of the side plate.

[0015] The utility model has the advantages as follows:

[0016] The connecting lug plate is arranged on both sides of the step plate, the connecting mode of the step plate and the support frame is changed, the step plate is no longer arranged on the upper surface of the angle iron, and when the step plate bears weight, the downward pressure is changed into the lateral pulling force of the support frame, so that the strength and stability of the step plate are improved.

[0017] The connecting lug plate is fixed to the lower end of the step plate, the step plate and the connecting lug plates on the left and right sides form an arch structure, and the step plate can bear greater pressure. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by the drawings without creative labor.

[0019] Figure 1 It is a perspective view of the step;

[0020] Figure 2 It is a structural schematic view of the step;

[0021] Figure 3 It is Figure 2 It is an enlarged view of the step;

[0022] Figure 4 It is a schematic view of the step plate;

[0023] Figure 5 It is a schematic view of the support frame;

[0024] Figure 6 It is a schematic view of the angle iron and the reinforcing rib;

[0025] Figure 7 It is a schematic view of the anti-skid strip;

[0026] Figure 8 It is a schematic view of the core material.

[0027] Explanation of symbols in the drawings:

[0028] 1 is a support frame, 11 is a side plate, and 12 is a cross beam;

[0029] 2 is a step plate, 21 is a connecting lug plate, 211 is a connecting hole, 22 is a connecting plate, and 23 is an anti-skid groove;

[0030] 3 is angle iron;

[0031] 4 is a reinforcing rib;

[0032] 5 represents anti-slip strips;

[0033] 6 represents the core material. Detailed Implementation

[0034] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0035] The stair treads provided in the embodiments of this application will now be described.

[0036] like Figures 1 to 8 As shown:

[0037] A stair tread has a support frame 1 and a tread 2. The tread 2 is located inside the support frame 1. Both sides of the tread 2 are provided with connecting lugs 21. The connecting lugs 21 are arranged vertically and abut against the inner side of the support frame 1. The connecting lugs 21 and the support frame 1 are fixedly connected to each other.

[0038] Both sides of the pedal 2 are provided with connecting ear plates 21. The setting of the connecting ear plates 21 changes the connection method between the pedal 2 and the support frame 1. The pedal 2 is no longer placed on the upper surface of the support frame 1. When the pedal 2 bears the weight, the downward pressure is converted into the pulling force to the support frames 1 on both sides, thereby increasing the strength and stability of the pedal 2.

[0039] The connecting ear plate 21 is fixedly installed at the lower end of the pedal 2. The pedal 2 and the connecting ear plates 21 on the left and right sides together form an arched structure, allowing the pedal 2 to withstand greater pressure.

[0040] Step 2 is made of carbon fiber, which makes full use of the high tensile strength of carbon fiber, further increasing the strength and stability of step 2. Step 2 is made of carbon fiber, which is lightweight and can reduce the overall weight of the steps, making it easy to transport and transfer. It can be used in mobile staircases for aircraft passenger boarding stairs or other special vehicles.

[0041] An angle iron 3 is provided inside the connecting lug 21. The upper end face of the angle iron 3 abuts against the lower end face of the pedal 2, and the side face of the angle iron 3 abuts against the inner side face of the connecting lug 21. The connecting lug 21 is provided with a connecting hole 211. The angle iron can prevent the connecting hole 211 from wearing out due to vibration and friction during long-term use, thereby avoiding loosening of the connection between the connecting lug 21 and the support frame 1. In this embodiment, the angle iron 3 is made of aluminum alloy.

[0042] In the embodiment, the connecting lug 21 and the inner side of the support frame 1 are connected by bolt connection, and the support frame 1 is made of metal. The connecting lug 21 and the inner side of the support frame 1 can also be connected by bonding, and the support frame 1 can also be made of composite material.

[0043] The tread plate 2 is also provided with a connecting plate 22, which is fixed between adjacent tread plates 2 and is integrally formed with the tread plate 2, further increasing the structural strength of the tread plate 2. In the embodiment, the tread plate 2 is arranged transversely, and the connecting plate 22 is arranged vertically, and the included angle between the tread plate 2 and the connecting plate 22 is close to 90 degrees.

[0044] The stair step is also provided with a reinforcing rib 4, which is arranged between the tread plate 2 and the connecting plate 22, and the upper end surface of the reinforcing rib 4 abuts against the lower side surface of the tread plate 2, and the lower end surface abuts against the rear side surface of the connecting plate 22.

[0045] The tread plate 2, the connecting plate 22 and the reinforcing rib 4 together form a hollow triangle, which is stable in structure. When a person steps on the tread plate 2, the connection between the tread plate 2 and the connecting plate 22 is the main bearing point. The arrangement of the reinforcing rib 4 can effectively disperse the pressure and improve the maximum bearing capacity of the tread plate 2.

[0046] In the embodiment, the reinforcing rib 4 is made of carbon fiber material, which is strong and light in weight.

[0047] The upper end surface of the tread plate 2 is also provided with an anti-skid groove 23, and the anti-skid groove 23 is provided with an anti-skid strip 5, which can enhance the structural strength of the tread plate 2. In the embodiment, the anti-skid strip 5 is made of aluminum alloy material, and the tread plate 2 is made of carbon fiber material. The carbon fiber material is not wear-resistant, and the arrangement of the anti-skid strip 5 can improve the wear resistance of the tread plate 2. Moreover, the cost of replacing the anti-skid strip 5 is low, which can reduce the maintenance cost of the subsequent stair step.

[0048] The tread plate 2 is filled with a core material 6, and a plurality of glue filling holes are arranged on the core material 6. The glue filling holes are filled with adhesive, which bonds the tread plate 2 together to form a sandwich structure with the core material 6 inside and the carbon fiber material outside, further increasing the rigidity of the tread plate 2. In the embodiment, the core material 6 is made of PVC material.

[0049] The support frame 1 is provided with side plates 11 and cross beams 12, and the cross beams 12 are fixed between the side plates 11. The tread plate 2 is arranged between the side plates 11, and the connecting lug 21 is fixed to the inner side of the side plate 11.

[0050] The above description is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A stair step provided with a support frame and a tread, said tread being provided within said support frame, characterized in that, Both sides of the pedal are provided with connecting lug plates, which are arranged along the vertical direction and abut against the inner side of the support frame, and are fixedly connected with the support frame; an angle iron is arranged in the connecting lug plate, the upper end surface of the angle iron abuts against the lower end surface of the pedal, and the side surface of the angle iron abuts against the inner side surface of the connecting lug plate.

2. The stair step of claim 1, wherein: The connecting lug plate is fixedly arranged at the lower end of the pedal.

3. A stair step according to claim 2, wherein: The pedal is made of carbon fiber material.

4. A stair step according to any one of claims 1 to 3, characterized in that: The pedal is further provided with a connecting plate, which is fixedly arranged between adjacent pedals and is integrally formed with the pedals.

5. The stair step of claim 4, wherein: A reinforcing rib is further arranged between the pedal and the connecting plate, the upper end surface of the reinforcing rib abuts against the lower side surface of the pedal, and the lower end surface of the reinforcing rib abuts against the rear side surface of the connecting plate.

6. A stair step according to claim 5, wherein: The reinforcing rib is made of carbon fiber material.

7. A stair step according to any one of claims 1 to 3, wherein: The upper end surface of the pedal is further provided with an anti-skid groove, and an anti-skid strip is arranged in the anti-skid groove.

8. A stair step according to any one of claims 1 to 3, wherein: The pedal is filled with a core material.

9. A stair step according to any one of claims 1 to 3, wherein: The support frame is provided with side plates and cross beams, the cross beams are fixedly arranged between the side plates; the pedal is arranged between the side plates, and the connecting lug plates are fixedly arranged at the inner side of the side plates.

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