一种带有胀紧补强功能的新型分体侧顶连接结构

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By adopting a connection design between the upper and lower side roofs in the interior side roof structure of rail transit vehicles, and using expansion nuts and rivets for fixing, the problem of insufficient rigidity of the side roof structure under space constraints is solved, achieving a stable connection without external reinforcing ribs, improving vibration and torsional resistance, and reducing weight and cost.

CN224511117UActive Publication Date: 2026-07-17JIANGSU MINGXIN TRANSPORTATION EQUIPMENT CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: JIANGSU MINGXIN TRANSPORTATION EQUIPMENT CO LTD
Filing Date: 2025-09-24
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

The interior side and roof structures of existing rail transit subway and high-speed rail vehicles lack sufficient reinforcement due to space constraints, resulting in insufficient rigidity, easy deformation, affecting aesthetics and posing safety hazards.

Method used

The design employs a connection structure with upper and lower side tops. By combining the inner groove plate, the expansion nut receiving groove, and the rivet extension plate, a complete circular groove is formed. The connection point without external reinforcing ribs is strengthened by using expansion nuts and set screws. Combined with multiple rows of rivets for fixing, it enhances vibration and torsional resistance.

Benefits of technology

Without the need for external reinforcement or stiffeners, the stability and reliability of the side and top structure are improved, deformation is avoided, aesthetics and flatness are maintained, and weight and material costs are reduced.

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Abstract

本实用新型涉及轨道交通的技术领域，尤其涉及一种带有胀紧补强功能的新型分体侧顶连接结构；包括上部侧顶和下部侧顶；连接内凹槽板面与连接外凹槽板面上的凹槽和凸槽位置结构相适应，并且内部设置有膨胀螺母；上部拉铆延伸板面与下部拉铆延伸板面上下贴合并拉铆连接的结构，达到能够取消侧顶背部加强筋的使用，降低了整体结构的重量与材料成本，并在无需外部加强筋的条件下，仍能有效保障侧顶轮廓的长期稳定，避免发生变形，同时侧顶连接结构具有优异的抗振动和抗扭转性能，能够适应车辆运营中的各种动态载荷，提高可靠性，消除了因变形导致的表面错台问题，保持了车辆内饰的美观性与平整度的效果。

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Claims

1. A novel split-type side-top connection structure with expansion and tightening reinforcement function, characterized in that: It includes the upper side top (1) and the lower side top (2); The upper side top (1) is provided with a connecting inner groove plate surface (1-1), a first expansion nut receiving groove (1-2), and an upper riveting extension plate surface (1-3). The connecting inner groove plate surface (1-1) is vertically arranged on the upper side top (1), and the upper riveting extension plate surface (1-3) is horizontally arranged on the top of the connecting inner groove plate surface (1-1) and extends outward. The first expansion nut receiving groove (1-2) is arranged below the upper riveting extension plate surface (1-3). The lower side top (2) is provided with a connecting outer groove plate surface (2-1), a second expansion nut receiving groove (2-2), and a lower riveting extension plate surface (2-3). The connecting outer groove plate surface (2-1) is vertically arranged on the outer side of the end of the lower side top (2). The lower riveting extension plate surface (2-3) is arranged on the lower side top (2) and extends inward. The second expansion nut receiving groove (2-2) is arranged above the lower side top (2) at a position between the connecting outer groove plate surface (2-1) and the lower riveting extension plate surface (2-3). The groove and protrusion positions of the inner groove plate (1-1) and the outer groove plate (2-1) are adapted to each other. The circular groove formed by the first expansion nut receiving groove (1-2) and the second expansion nut receiving groove (2-2) is surrounded by the outer groove plate (2-1), the lower riveting extension plate (2-3), the lower side top (2) and the upper riveting extension plate (1-3), and an expansion nut (3) is provided inside. The upper riveted extension plate (1-3) and the lower riveted extension plate (2-3) are attached and riveted together.

2. The novel split side-top connection structure with the expansion reinforcement function according to claim 1, characterized in that, The upper riveting extension plate (1-3) and the lower riveting extension plate (2-3) are provided with rivet fixing holes (5) on their upper and lower mating surfaces, and rivets are provided in the rivet fixing holes (5).

3. The new split side-top connection structure with the expansion reinforcement function according to claim 2, characterized in that, The rivet fixing holes (5) and the rivets are arranged in multiple rows.

4. A novel split-type side-top connection structure with expansion and tightening reinforcement function according to claim 1, characterized in that, The expansion nut (3) is screwed into the set screw (4), and the expansion nut (3) is tightened in the circular groove formed by the first expansion nut receiving groove (1-2) and the second expansion nut receiving groove (2-2).

5. The new split side-top connection structure with the expansion reinforcement function according to claim 1, characterized in that, The first expansion nut receiving groove (1-2) is a semi-circular groove, and the groove direction corresponds to the connecting inner groove plate surface (1-1).

6. The new split side-top connection structure with the expansion reinforcement function according to claim 1, characterized in that, The second expansion nut receiving groove (2-2) is a semi-circular groove, and the groove direction corresponds to the lower riveting extension plate surface (2-3).