High-phosphorus cast iron brake shoe back for railway passenger car

Abstract

The utility model discloses a high phosphorus cast iron brake shoe back for railway passenger car, including radian steel back body, shoe nose, its characterized in that radian steel back body middle section both sides are equipped with shearing mouth, and the both sides board of shoe nose is placed in shearing mouth, and both ends of shoe nose are located below radian steel back body and are fixedly connected with radian steel back body welding, and the middle part of radian steel back body is equipped with cast iron filling hole in the both sides of shoe nose, and both ends of radian steel back body are equipped with positioning stop cutout. The utility model can avoid that shoe nose is separated from radian steel back body, and improves the gripping force of high phosphorus cast iron friction body, prevents it from falling off, thereby ensures the brake shoe braking effect and operation safety.

Description

Technical Field

[0001] This utility model relates to a cast iron brake pad backing, and more particularly to a high-phosphorus cast iron brake pad backing for railway passenger cars. Background Technology

[0002] High-phosphorus cast iron brake shoes for railway passenger cars are formed by casting and fusing the backing of the brake shoe with high-phosphorus cast iron. They need to withstand greater loads during braking. However, the connection between the nose of the brake shoe and the curved steel backing body in the existing high-phosphorus cast iron brake shoe backing body is not good, and they are prone to separation and failure. The high-phosphorus cast iron is cast on the inner side of the curved steel backing body, and the bonding force between the high-phosphorus cast iron friction body and the curved steel backing body is too small, making it easy to fall off, which affects the braking effect and operational safety of the brake shoe. Summary of the Invention

[0003] The purpose of this utility model is to address the aforementioned shortcomings of the existing technology by providing a high-phosphorus cast iron brake shoe backing for railway passenger cars. This backing can prevent the brake shoe nose from separating from the curved steel backing and improve the gripping force on the high-phosphorus cast iron friction body, preventing it from falling off, thereby ensuring the braking effect and operational safety of the brake shoe.

[0004] To achieve the above objectives, this utility model provides a high-phosphorus cast iron brake pad backing for railway passenger cars, comprising an arc-shaped steel backing body and a pad nose. The arc-shaped steel backing body has shearing openings on both sides of its middle section. The side plates of the pad nose are placed within the shearing openings. The two ends of the pad nose are located below the arc-shaped steel backing body and are welded and fixed to it. Cast iron filling holes are provided in the middle of the arc-shaped steel backing body on both sides of the pad nose. Positioning stop cuts are provided at both ends of the arc-shaped steel backing body.

[0005] This invention places the two side plates of the brake shoe nose inside the shearing opening and welds their ends together below the curved steel backing. The connection strength between the brake shoe nose and the curved steel backing is high, which can prevent the two from separating. When the high-phosphorus cast iron is poured on the inner side of the curved steel backing, the molten iron enters the two cast iron filling holes and the positioning stop cut. After the high-phosphorus cast iron friction body is poured, it has good integrity, high connection strength, and high positioning accuracy of the positioning boss. This can improve the gripping force on the high-phosphorus cast iron friction body and prevent it from falling off, thereby ensuring the braking effect and operational safety of the brake shoe. As a further improvement of this utility model, the cast iron filling hole is an elongated hole with both ends being semi-circular; this can further increase the fusion area between the arc-shaped steel backing and the high-phosphorus cast iron friction body, and improve the gripping force on the friction body. As a further improvement of this utility model, the cast iron filling holes and positioning stop cuts on both sides of the brake shoe nose are symmetrically arranged; this can improve the uniformity of the force on the brake shoe and ensure the braking effect of the brake shoe. In summary, this invention can prevent the brake shoe nose from separating from the curved steel backing and improve the gripping force on the high-phosphorus cast iron friction body, preventing it from falling off, thereby ensuring the braking effect and operational safety of the brake shoe. Attached Figure Description

[0006] Figure 1 This is a front view of an embodiment of the present utility model.

[0007] Figure 2 for Figure 1 AA sectional view.

[0008] Figure 3 for Figure 1 BB cross-sectional view. Detailed Implementation

[0009] The present invention will now be described in further detail with reference to the accompanying drawings.

[0010] like Figures 1 to 3 As shown, this embodiment of a high-phosphorus cast iron brake pad backing for railway passenger cars includes an arc-shaped steel backing body 1 and a pad nose 2. The arc-shaped steel backing body 1 has shearing openings 3 on both sides of its middle section. The side plates of the pad nose 2 are placed within the shearing openings 3. The two ends 4 of the pad nose 2 are located below the arc-shaped steel backing body 1 and are welded and fixed to it. Cast iron filling holes 5 are provided in the middle of the arc-shaped steel backing body 1 on both sides of the pad nose 2. The cast iron filling holes 5 are elongated holes with semi-circular ends. Positioning stop cuts 6 are provided at both ends of the arc-shaped steel backing body 1. The cast iron filling holes 5 and positioning stop cuts 6 on both sides of the pad nose 2 are symmetrically arranged. This invention places the two side plates of the brake shoe nose 2 inside the shearing opening 3, and welds and fixes its two ends 4 to the bottom of the curved steel backing body 1. The shearing opening 3 can limit the position of the brake shoe nose, and the connection strength between the brake shoe nose 2 and the curved steel backing body 1 is high, which can prevent the two from separating. When the high phosphorus cast iron is poured into the inner side of the curved steel backing body 1, the molten iron enters the two cast iron filling holes 5 and the positioning stop cut 6. After the high phosphorus cast iron friction body is poured, the two are fused into one. The elongated hole can increase the fusion area of ​​the two, which has good integrity, high connection strength, and high positioning precision of the positioning boss. It can improve the gripping force on the high phosphorus cast iron friction body and prevent it from falling off. In addition, the cast iron filling holes 5 and positioning stop cut 6 symmetrically arranged on both sides can improve the uniformity of the force on the brake shoe, thereby ensuring the braking effect and operational safety of the brake shoe.

Claims

1. A high-phosphorus cast iron brake pad backing for railway passenger cars, comprising an arc-shaped steel backing body and a pad nose, characterized in that... Both sides of the middle section of the curved steel backing are provided with shearing openings. The two side plates of the tile nose are placed inside the shearing openings. The two ends of the tile nose are located below the curved steel backing and are welded and fixed to the curved steel backing. Cast iron filling holes are provided in the middle of the curved steel backing on both sides of the tile nose. Positioning stop cuts are provided at both ends of the curved steel backing.

2. The high-phosphorus cast iron brake pad backing for railway passenger cars as described in claim 1, characterized in that... The cast iron filling hole is an elongated hole with both ends being semi-circular.

3. The high-phosphorus cast iron brake pad backing for railway passenger cars as described in claim 2, characterized in that... The cast iron filling holes and positioning stop cuts on both sides of the tile nose are symmetrically arranged.

Images