Easily-folded sleeve

Abstract

A sleeve body of the sleeve is composed of a base section and a lamp pole inserting section, the bottom of the base section is of a fastening structure, the base section is inserted into an inserting hole in the ground surface and fixed through the fastening structure, a base table is arranged above the fastening structure, the base table covers the opening edge portion of the inserting hole, and the lamp pole inserting section is arranged on the base table. A stress concentration notch is formed in the position, above the base table, of the connecting portion of the base section and the lamp pole inserting section, and the lamp pole inserting section is connected with the base section through the stress concentration notch. According to the utility model, the sleeve body is easy to break when encountering external force, the fracture can be stably positioned at the connecting part of the base station and the lamp post inserting section, the fracture is neat and low in height, and the risk of secondary injury can be reduced as much as possible.

Description

Technical Field

[0001] The utility model relates to an easily foldable sleeve in the field of airport construction. Background Art

[0002] Airport runway lights are installed within mounting base sleeves, located on either side of the runway. If an aircraft veers off the runway and its wing strikes a runway light, the runway light pole sleeve must immediately break to minimize damage. Existing mounting base sleeves often have a breakable portion several tens of centimeters above the ground, and the fractured portion is prone to irregular, sharp surfaces. This can cause secondary damage to passing aircraft, vehicles, and personnel. Excessive impact can even knock the mounting base sleeve out of its original mounting position, posing a significant safety hazard. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide an easily foldable sleeve with higher safety and reliability.

[0004] A technical solution to achieve the above object is: a foldable sleeve, comprising a sleeve body;

[0005] The sleeve body consists of a base section and a lamp pole plug-in section. The bottom of the base section is a fastening structure. The base section is plugged into the plug-in hole on the ground and fixed by the fastening structure. Above the fastening structure is the base. The base covers the edge of the plug-in hole. Above the base, a stress concentration notch is provided at the connection between the base section and the lamp pole plug-in section. The lamp pole plug-in section is connected to the base section through the stress concentration notch.

[0006] Furthermore, a snap-in groove matching the plug-in hole is provided on the fastening structure.

[0007] Furthermore, an external thread is provided on the outer circumferential surface of the fastening structure, an internal thread connector is provided in the plug hole, and the fastening structure is threadedly connected to the internal thread connector.

[0008] Furthermore, the inner diameter of the base section is smaller than the inner diameter of the lamp pole plug-in section, and the outer diameter of the base is larger than the outer diameter of the fastening structure.

[0009] Furthermore, the outer diameter of the base section decreases uniformly from the upper surface of the base to the point where the outer diameter of the stress concentration notch is the smallest. The angle of the stress concentration notch is 45°, and the angle between the upper surface of the base and the horizontal direction is 15°. The outer diameter of the stress concentration notch smoothly transitions to the outer diameter of the lamp pole connection section.

[0010] Furthermore, the side wall thickness at the minimum outer diameter of the stress concentration notch is 2 mm.

[0011] Furthermore, the ratio of the height of the lamp pole plug-in section to the inner diameter of the base section is at least 2:1.

[0012] Furthermore, the sleeve body is formed by extrusion of aluminum alloy.

[0013] This utility model provides a breakable sleeve consisting of a base section and a lamp pole plug-in section. The base section is buried in a plug-in hole in the ground. A relatively low base along the plug-in hole is used to fix and support the structure. Above the base, a stress concentration notch is used to connect the lamp pole plug-in section. When the lamp pole plug-in section is broken by contact, the fastening structure of the base section can ensure that the base section is firmly connected to the plug-in hole. The base can also play a role in limiting and fixing. The stress concentration notch ensures that the fracture of the lamp pole plug-in section can be stably located at the connection between the base and the lamp pole plug-in section. The fracture is neat and low in height, which can minimize the risk of secondary injury. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of an easily foldable sleeve of the present utility model. DETAILED DESCRIPTION

[0015] In order to better understand the technical solution of the present invention, the following is a detailed description through specific embodiments:

[0016] See also Figure 1 The utility model discloses an easily foldable sleeve, whose sleeve body is composed of a base section 1 and a lamp pole plug-in section 2.

[0017] The base section 1 is used to install and fix the sleeve body. The bottom of the base section 1 is a fastening structure 11. The base section 1 is inserted into the insertion hole on the ground and is fixed by the fastening structure 11.

[0018] In one embodiment, a snap-in groove 12 matching the plug hole is formed on the fastening structure 11 .

[0019] In another embodiment, the outer circumference of the fastening structure 11 is provided with an external thread, and the insertion hole is provided with an internal thread connector, and the fastening structure and the internal thread connector are threadedly connected. This connection form makes the replacement of the sleeve body convenient and efficient.

[0020] Above the fastening structure 11 is a base 13. This base 13 has an external hexagonal shape and is used for fastening. It covers the rim of the socket and contacts the ground. Its cross-sectional area is larger than that of the fastening structure 11, enhancing structural stability. If the sleeve is subjected to a lateral impact and threatens to topple, the base 13 ensures that the base segment 1 remains within the socket and does not fly out.

[0021] The stress concentration notch 14 is above the base 13, which is located at the connecting part of the base section 1 and the lamp pole inserting section 2. The outer diameter of the base section 1 uniformly decreases from the upper surface of the base 13 to the minimum outer diameter of the stress concentration notch 14. The angle of the stress concentration notch a is 45°, the angle b between the upper surface of the base 13 and the horizontal direction is 15°, and the outer diameter of the stress concentration notch smoothly transitions to the outer diameter of the lamp pole inserting section 2. The inner diameter of the base section 1 is smaller than the inner diameter of the lamp pole inserting section 2, and the outer diameter of the base 13 is larger than the outer diameter of the fastening structure. The side wall thickness of the minimum outer diameter of the stress concentration notch is 2mm. The ratio of the height of the lamp pole inserting section to the inner diameter of the base section is at least 2:1.

[0022] The above structure ensures that the sleeve body is easy to break after receiving external force impact, and the fracture is stably located on the upper surface of the base, so that the height of the fracture is low, and the fracture shape is controllable.

[0023] In order to ensure that the sleeve body has certain structural strength to meet the daily use, and also to ensure that it can be broken at one touch in case of accident, the finished product is made of aluminum alloy extrusion, the strength of the material is improved through heat treatment, and the stress concentration notch is processed to meet the use requirements.

[0024] Those skilled in the art in the technical field should recognize that the above embodiments are only used to illustrate the present application, and are not used as a limitation of the present application. As long as the changes and modifications of the above described embodiments are within the scope of the essential spirit of the present application, they will fall within the scope of the claims of the present application.

Claims

1. A foldable sleeve, comprising a sleeve body, characterized in that: The sleeve body consists of a base section and a lamp pole plug-in section. The bottom of the base section is a fastening structure. The base section is plugged into the plug-in hole on the ground and fixed by the fastening structure. Above the fastening structure is the base. The base covers the edge of the plug-in hole. Above the base, a stress concentration notch is provided at the connection between the base section and the lamp pole plug-in section. The lamp pole plug-in section is connected to the base section through the stress concentration notch.

2. The foldable sleeve according to claim 1, characterized in that: The fastening structure is provided with a snap-in groove matching the plug-in hole.

3. The foldable sleeve according to claim 1, characterized in that: An external thread is provided on the outer circumferential surface of the fastening structure, an internal thread connector is provided in the plug hole, and the fastening structure is threadedly connected to the internal thread connector.

4. The foldable sleeve according to claim 1, characterized in that: The inner diameter of the base section is smaller than the inner diameter of the lamp pole plug-in section, and the outer diameter of the base is larger than the outer diameter of the fastening structure.

5. The foldable sleeve according to claim 1, characterized in that: The outer diameter of the base section decreases evenly from the upper surface of the base to the point where the outer diameter of the stress concentration notch is the smallest. The angle of the stress concentration notch is 45°, and the angle between the upper surface of the base and the horizontal direction is 15°. The outer diameter of the stress concentration notch smoothly transitions to the outer diameter of the lamp pole connection section.

6. The foldable sleeve according to claim 5, characterized in that: The side wall thickness at the smallest outer diameter of the stress concentration notch is 2 mm.

7. The foldable sleeve according to claim 1, characterized in that: The ratio of the height of the lamp pole plug-in section to the inner diameter of the base section shall be at least 2:

1.

8. The foldable sleeve according to claim 1, characterized in that: The sleeve body is made of extruded aluminum alloy.

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