Side wall waist rest split structure

Abstract

The utility model provides a split structure of a side wall and a waist rest, which comprises an upper side wall, a waist rest, a lower side wall and a waist rest connecting seat, the upper part of the upper side wall is fixed on a vehicle body structure through a bolt, the lower part of the upper side wall is connected with the waist rest in an inserting way, the upper side and the lower side of the lower side wall are fixed on the vehicle body structure through bolts, and the waist rest connecting seat is connected with the waist rest connecting seat. The waist rest is connected with the vehicle body structure through the waist rest connecting seat; the waist rest connecting seats are pasted on the glass fiber reinforced plastic waist rest main body through three layers of fiber sheets, and the waist rest connecting seats are respectively distributed at the upper part and the lower part of the rear side of the waist rest main body; by adopting the side wall and the waist rest which are designed in a split manner, the weight is reduced by 25% compared with the original scheme, the cost is reduced, taking the Xiamen subway line 6 project as an example: the weight of one train is reduced by 120kg, the cost is reduced by about 1200yuan per column, the cost of 28 trains in the whole project is reduced by about 3360,000 yuan, the side wall and the waist rest are mounted on the side wall of a train body, the maintenance can be changed from daily inspection to monthly inspection, the maintenance labor cost is reduced, and the maintenance efficiency is improved. And the potential safety hazard caused by loosening basically does not exist.

Description

Technical Field

[0001] The utility model relates to a rail vehicle body structure, in particular to a side wall waist support split structure. Background Art

[0002] In the previous rail vehicle design process, the side wall adopts an integral structure, and the lumbar support is directly installed on the side wall. Since the lumbar support is a load-bearing component, the strength of the installation structure is required to be high. The back of the side wall is bonded with an integral welded frame, which increases the cost and does not conform to the current vehicle lightweight design concept. In addition, during the long-term operation of the vehicle, the side wall is easily damaged, resulting in varying degrees of looseness of the lumbar support and side wall, which increases the daily maintenance cost and also poses a safety hazard. Utility Model Content

[0003] The utility model aims to reduce the weight of a single side wall, reduce the cost of the material itself and the vehicle operation and maintenance cost, and avoid potential safety hazards caused by the looseness of the waist support and the side wall.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a side wall lumbar support split structure, comprising an upper side wall, a lumbar support, a lower side wall and a lumbar support connecting seat, the upper part of the upper side wall is fixed to the vehicle body structure by bolts, the lower part of the upper side wall is plug-connected and installed with the lumbar support, the upper and lower sides of the lower side wall are fixed to the vehicle body structure by bolts, and the lumbar support is connected to the vehicle body structure through the lumbar support connecting seat.

[0005] Furthermore, the lumbar support connecting seat is pasted onto the fiberglass lumbar support body through three layers of fiber sheets, and the lumbar support connecting seat is respectively distributed at the upper part and the lower rear part of the lumbar support body.

[0006] Furthermore, the lumbar support is provided with a lumbar support frame, and a gap for inserting the upper side wall is reserved between the lumbar support frame and the upper lumbar support connecting seat. The mounting hole of the upper lumbar support connecting seat is higher than the lumbar support frame and is located behind the upper side wall. Three lower lumbar support connecting seats are arranged and are respectively located behind the lumbar support frame.

[0007] Furthermore, the lumbar support connecting seat is connected to the vehicle body structure by bolts, and thread locking glue and anti-loosening marks are applied to the fasteners.

[0008] The split-type design of the side walls and lumbar support reduces weight by 25% compared to the original solution, and reduces costs. Take the Xiamen Metro Line 6 project as an example: one train loses 120kg, and the cost is reduced by about RMB 1,200 per train. For the entire project with 28 trains, the cost is reduced by about RMB 33,600. Since they are installed on the side walls of the car body, maintenance can be changed from daily inspection to monthly inspection, reducing maintenance labor costs, and there are basically no safety hazards caused by looseness. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1Schematic diagram of split side wall structure;

[0010] Figure 2 Lumbar support front view;

[0011] Figure 3 View of the connection between the lumbar support and the vehicle body structure. DETAILED DESCRIPTION

[0012] The entire split structure mainly includes an upper side wall 1, a lumbar support 2, a lower side wall 3, a lumbar support connecting seat 4 and a lumbar support frame 5. During installation, the upper side wall 1 and the lower side wall 3 can be installed at the same time and fixed to the vehicle body structure by bolts. The lower part of the upper side wall 1 is plugged and installed with the lumbar support 2. After the installation is completed, the lumbar support 2 is connected to the vehicle body structure through the lumbar support connecting seat 4 with bolts, and thread locking glue and anti-loosening marks are applied to the fasteners.

[0013] The waist support connection seat 4 is pasted onto the main body of the glass fiber reinforced plastic waist support 2 through three layers of fiber sheets, and the waist support connection seat 4 is respectively distributed at the upper part and the lower rear part of the main body of the waist support 2.

[0014] The lumbar support 2 is provided with a lumbar support frame 5, and a gap for inserting the upper side wall 1 is reserved between the lumbar support frame 5 and the upper lumbar support connecting seat 4. The mounting hole of the upper lumbar support connecting seat 4 is higher than the lumbar support frame 5 and is located behind the upper side wall 1. Three lower lumbar support connecting seats 4 are arranged and are respectively located behind the lumbar support frame 5.

[0015] A split side wall and lumbar support solution is designed. The side wall adopts an upper and lower split structure, and the lumbar support 2 is directly installed on the vehicle body frame. After the change, the upper and lower side walls are the same as other side walls in the non-lumbar support area, which are only decorative parts and do not require a reinforcing structure for the overall back frame. Since the lumbar support 2 is directly installed on the vehicle body structure, the strength is reliable, and the side walls and lumbar support will not loosen during daily operation.

Claims

1. A side wall waist support split structure, characterized in that: It comprises an upper side wall, a lumbar support, a lower side wall and a lumbar support connecting seat. The upper part of the upper side wall is fixed to the vehicle body structure by bolts, the lower part of the upper side wall is plugged and installed with the lumbar support, the upper and lower sides of the lower side wall are fixed to the vehicle body structure by bolts, and the lumbar support is connected to the vehicle body structure through the lumbar support connecting seat.

2. The side wall waist support split structure according to claim 1, characterized in that: The waist support connecting seat is pasted onto the glass fiber reinforced plastic waist support body through three layers of fiber sheets, and the waist support connecting seat is respectively distributed at the upper part and the lower rear part of the waist support body.

3. The side wall waist support split structure according to claim 1, characterized in that: The lumbar support is provided with a lumbar support frame, and a gap for inserting the upper side wall is reserved between the lumbar support frame and the upper lumbar support connecting seat. The mounting hole of the upper lumbar support connecting seat is higher than the lumbar support frame and is located behind the upper side wall. Three lower lumbar support connecting seats are arranged and are respectively located behind the lumbar support frame.

4. The side wall waist support split structure according to claim 1, characterized in that: The waist support connecting seat is connected to the vehicle body structure by bolts, and thread locking glue and anti-loosening marks are applied on the fasteners.

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