Aluminum alloy overpass step stairway structure

Abstract

According to the aluminum alloy overpass step stairway structure, the two ends of a stairway profile with a triangular section are fixedly connected with the side face of a longitudinal beam profile, and an anti-slip strip profile is installed at the edge corner of one end of the upper plane of the section of the stairway profile; the lower end of the section of the stairway section is inserted into the adjacent stairway section, and the edge of the other end of the upper plane of the section of the last stairway section is inserted into the bridge deck slab section. According to the stairway profile, the anti-slip strip profile is additionally arranged on the edge of the stairway profile, so that the safety of pedestrians is improved, and the heavy load and impact bearing capacity of the stairway is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy overpasses, in particular to an aluminum alloy overpass step ladder structure. Background Art

[0002] Aluminum alloy pedestrian overpasses have become a common form of overpass in urban areas in recent years. They are constructed primarily of aluminum profiles, with the profile members connected through fastenings and bolting. The steps and stairways of these overpasses can be made of aluminum profiles, with each step consisting of a single aluminum profile. The stairway profiles are mounted on the sides of the longitudinal beams via aluminum angle supports at both ends. For details on their structure, see the published patent application: "An Aluminum Alloy Pedestrian Bridge Stairway Connection Structure" (Application Number CN202011511535.7).

[0003] However, the above-mentioned existing aluminum alloy pedestrian bridge step ladder structure still has the following shortcomings: 1. The stress environment at the edge of the existing ladder profile section is relatively harsh, and it is frequently hit and subjected to heavy loads, resulting in serious damage to the profile surface at the edge of the profile section. 2. The stress environment at the angle aluminum where the ladder profile is connected to the longitudinal beam is relatively harsh. After long-term use, the bolt structure of the connection is deformed and damaged by the long-term shear force at the bolt hole, causing the ladder structure to loosen, affecting pedestrian walking safety. 3. Although the ladder surface is provided with anti-slip grooves, the anti-slip effect is still insufficient due to the smooth surface of the aluminum profile. Summary of the Invention

[0004] In response to the above problems, the utility model provides an aluminum alloy overpass step ladder structure, which adds anti-slip strip profiles to the edges of the ladder profiles, which not only improves the safety of pedestrians, but also improves the ladder's ability to withstand heavy loads and impacts.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] An aluminum alloy overpass step ladder structure, wherein the two ends of a ladder profile with a triangular cross-section are fixedly connected to the side of a longitudinal beam profile, and an anti-slip strip profile is installed at the corner of the edge of one end of the plane on the cross-section of the ladder profile; the lower end of the ladder profile cross-section is plugged into the adjacent ladder profile, and the other end edge of the plane on the cross-section of the last ladder profile is plugged into the bridge deck profile.

[0007] A groove is provided on the upper surface of the anti-slip strip profile, and an anti-slip rubber strip is installed in the groove.

[0008] The structure of anti-slip strip profile + anti-slip rubber strip improves the anti-slip performance of the stairway, greatly reduces the chance of pedestrians slipping, and improves pedestrian safety; on the other hand, the anti-slip strip profile wrapped around the corners of the stairway cross-section improves the stairway's ability to withstand heavy loads and impacts, which is equivalent to thickening the local profile thickness of the stairway profile.

[0009] A protruding support portion is provided on the inner side of the longitudinal beam profile, and an upper plane of the protruding support portion supports the bottom surfaces of both ends of the ladder profile.

[0010] When the longitudinal beam profile is at the side of the bridge deck profile, the upper plane of the protruding support portion supports the bottom surfaces of both ends of the bridge deck profile.

[0011] Compared with the original design that used angle aluminum + bolts to support the stairway profile and bridge deck profile, this structure combines the supporting structure and the longitudinal beam into one integral structure, avoiding shear damage to the profile bolt holes by steel bolts, thereby increasing the overall life of the overpass; it also reduces the installation process and improves installation efficiency.

[0012] Advantages of this utility model:

[0013] 1. The utility model adds the structure of anti-slip strip profile + anti-slip rubber strip, which improves the anti-slip performance of the stairway, greatly reduces the chance of pedestrians slipping, improves pedestrian safety; and improves the ability of the stairway to withstand heavy loads and impacts.

[0014] 2. The utility model provides a protruding support portion on the longitudinal beam, combining the support structure and the longitudinal beam into an integral structure, avoiding shear damage to the profile bolt holes by steel bolts, thereby increasing the overall life of the overpass; and also reducing the installation process and improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the structural diagram of the combination of stairway profile and bridge deck profile;

[0016] Figure 2 This is the cross-sectional structure diagram of the anti-slip strip profile;

[0017] Figure 3 This is a schematic diagram of the installation position of the stairway profile and the longitudinal beam profile;

[0018] Figure 4 It is the cross-sectional structure diagram of the longitudinal beam profile;

[0019] The serial numbers in the figure are marked as: 1-stairway profile; 2-bridge deck profile; 3-anti-slip strip profile; 31-anti-slip rubber strip; 4-longitudinal beam profile; 41-protruding support part. DETAILED DESCRIPTION Example 1

[0020] An aluminum alloy overpass step ladder structure, wherein the two ends of a ladder profile 1 with a triangular cross-section are fixedly connected to the side surfaces of a longitudinal beam profile 4, and an anti-slip strip profile 3 is installed at the corner of the edge of one end of the plane on the cross-section of the ladder profile 1; the lower end of the cross-section of the ladder profile 1 is plugged into the adjacent ladder profile 1, and the other end edge of the plane on the cross-section of the last ladder profile 1 is plugged into the bridge deck profile 2.

[0021] A groove is provided on the upper surface of the anti-slip strip profile 3, and an anti-slip rubber strip 31 is installed in the groove.

[0022] A protruding support portion 41 is provided on the inner side of the longitudinal beam profile 4 , and the upper plane of the protruding support portion 41 supports the bottom surfaces of both ends of the ladder profile 1 .

[0023] When the longitudinal beam profile 4 is located at the side of the bridge deck profile 2 , the upper plane of the protruding support portion 41 supports the bottom surfaces of both ends of the bridge deck profile 2 .

Claims

1. An aluminum alloy overpass step ladder structure, characterized in that: The two ends of the ladder profile (1) with a triangular cross section are fixedly connected to the side of the longitudinal beam profile (4), and the anti-slip strip profile (3) is installed at the corner of the edge of one end of the plane of the ladder profile (1); the lower end of the ladder profile (1) is plugged into the adjacent ladder profile (1), and the other end of the plane of the ladder profile (1) is plugged into the bridge deck profile (2).

2. The aluminum alloy overpass step structure according to claim 1 is characterized in that: A groove is provided on the upper surface of the anti-slip strip profile (3), and an anti-slip rubber strip (31) is installed in the groove.

3. The aluminum alloy overpass step structure according to claim 1 is characterized in that: A protruding support portion (41) is provided on the inner side of the longitudinal beam profile (4), and the upper plane of the protruding support portion (41) supports the bottom surfaces of both ends of the ladder profile (1).

4. The aluminum alloy overpass step structure according to claim 3 is characterized in that: When the longitudinal beam profile (4) is located at the side of the bridge deck profile (2), the upper plane of the protruding support portion (41) supports the bottom surfaces of both ends of the bridge deck profile (2).

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