Electric locomotive powder metallurgy brake shoe steel back

Abstract

The utility model discloses a kind of electric locomotive powder metallurgy brake shoe steel back, including the integral connection of the shoe back body of two outer sections and middle section, the shoe nose being fixedly connected in the outer side of shoe back body middle section by outside weld, and the shoe nose is equipped with shoe nose hole;Its characterized in that the outer side surface of the shoe back body two outer sections is fixedly connected with bent positioning baffle by outside weld, the positioning baffle is equipped with outer groove, the outer section of shoe back body in the bottom of positioning baffle is equipped with welding hole, and the outer section of shoe back body is fixedly connected with positioning baffle by inside weld in welding hole, and inside weld does not exceed the inside surface of outer section of shoe back body.The utility model can improve the connecting strength of shoe back body and brake shoe bracket, to ensure brake shoe braking effect and operating safety.

Description

Technical Field

[0001] This utility model relates to a powder metallurgy brake shoe steel backing for electric locomotives. Background Technology

[0002] The powder metallurgy brake shoe backing of existing electric locomotives, such as Figure 1 , Figure 2 As shown, the system includes a backing body 11 with a middle section and two outer sections integrally connected, and a nose 13 fixed to the outer side of the middle section of the backing body via an outer weld 12. The nose 13 is provided with a nose hole. Subsequently, powder metallurgy friction blocks need to be welded to the inner side of the backing body to form a locomotive powder metallurgy brake shoe. The nose 13 is connected to the brake shoe bracket of the electric locomotive to achieve braking of the locomotive wheels. During braking, the steel back of the brake shoe needs to bear a larger load. However, the connection strength between the backing body 11 and the brake shoe bracket, and between the backing body 11 and the nose 13 is insufficient, which affects the braking effect and operational safety of the brake shoe. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned shortcomings of the existing technology by providing a powder metallurgy steel backing for electric locomotive brake shoes. This backing can improve the connection strength between the brake shoe backing and the brake shoe bracket, thereby ensuring the braking effect and operational safety of the brake shoes.

[0004] To achieve the above objectives, this utility model provides a powder metallurgy brake shoe steel backing for electric locomotives, comprising a backing body with a middle section and two outer sections integrally connected, and a nose plate fixed to the outer side of the middle section of the backing body via an outer weld, the nose plate having a nose plate hole; characterized in that a bent positioning baffle is fixed to the outer side of each of the two outer sections of the backing body via an outer weld, the positioning baffle having an outer groove, and the outer section of the backing body at the bottom of the positioning baffle having a weld hole, the outer section of the backing body being fixed to the positioning baffle via an inner weld in the weld hole, the inner weld not exceeding the inner side of the outer section of the backing body.

[0005] This utility model adds positioning baffles to the outer sides of the two outer sections of the brake shoe back body. The positioning baffles are fixed to the brake shoe back body through the outer and inner welds, resulting in high connection strength. When in use, the positioning boss of the brake shoe bracket is placed in the outer groove of the positioning baffle, which can improve the connection strength between the brake shoe back body and the brake shoe bracket, thereby ensuring the braking effect and operational safety of the brake shoe. As a further improvement of this utility model, the inner end of the tile nose is connected to the middle section of the tile back body through two welds, and the inner sides of the two welds do not exceed the inner side of the middle section of the tile back body; this can improve the welding connection strength between the tile back body and the tile nose. As a further improvement of this utility model, the two positioning baffles are symmetrically arranged with respect to the center line of the bearing nose; this can ensure the uniformity of the force on the bearing back body during braking. In summary, this invention can improve the connection strength between the brake shoe back body and the brake shoe bracket, thereby ensuring the braking effect and operational safety of the brake shoe. Attached Figure Description

[0006] Figure 1 This is a front view of the steel backing of powder metallurgy brake shoes for existing electric locomotives.

[0007] Figure 2 for Figure 1 AA section diagram.

[0008] Figure 3 This is a front view of an embodiment of the present utility model.

[0009] Figure 4 for Figure 3 Top view.

[0010] Figure 5 for Figure 4 BB cross-sectional view.

[0011] Figure 6 for Figure 3 CC section view. Detailed Implementation

[0012] The present invention will now be described in further detail with reference to the accompanying drawings.

[0013] like Figures 3 to 6 As shown, this embodiment of a powder metallurgy brake shoe steel backing for an electric locomotive includes a backing body 1 consisting of a middle section and two outer sections integrally connected, and a nose 2 fixed to the outer side of the middle section of the backing body via an outer weld 4. The nose 2 has a nose hole 3, and the inner end of the nose 2 is connected to the middle section of the backing body via two welds 5. The inner sides of the two welds 5 do not exceed the inner side of the middle section of the backing body. Bent positioning baffles 7 are fixed to the outer sides of the two outer sections of the backing body 1 via outer welds 6. The positioning baffles 7 have outer grooves, and the outer sections of the backing body at the bottom of the positioning baffles 7 are provided with weld holes. The outer sections of the backing body are fixed to the positioning baffles 7 via inner welds 8 in the weld holes. The inner welds 8 do not exceed the inner side of the outer sections of the backing body. The two positioning baffles 7 are symmetrically arranged around the center line of the nose 2.

[0014] This utility model adds two positioning baffles 7 to the outer sides of the two outer sections of the brake shoe back body by welding. The positioning baffles 7 are fixed to the brake shoe back body 11 through the outer weld 6 and the inner weld 8, and the connection strength is high. In use, the positioning boss of the brake shoe bracket is placed in the outer groove of the positioning baffle 7, which can improve the connection strength between the brake shoe back body 11 and the brake shoe bracket. The addition of two welds 5 can improve the welding connection strength between the brake shoe back body 11 and the brake shoe nose 2. After the powder metallurgy friction block is welded to the inner side of the brake shoe back body 11, it becomes the powder metallurgy brake shoe of the electric locomotive, thereby ensuring the braking effect and operation safety of the brake shoe. The two positioning baffles 7 are symmetrically arranged around the center line of the bearing nose, which can ensure the uniformity of the force on the bearing back body 11 during braking, which is beneficial to braking.

Claims

1. A powder metallurgy brake shoe steel backing for electric locomotives, comprising a backing body integrally connected to a middle section and two outer sections, and a nose plate fixed to the outer side of the middle section of the backing body via an outer weld, the nose plate having a nose plate opening; characterized in that... Both outer sections of the tile backing body have bent positioning baffles fixed to their outer sides by outer welds. The positioning baffles have outer grooves, and the outer sections of the tile backing body at the bottom of the positioning baffles have weld holes. The outer sections of the tile backing body are fixed to the positioning baffles by inner welds in the weld holes. The inner welds do not extend beyond the inner side of the outer sections of the tile backing body.

2. The powder metallurgy brake shoe backing for electric locomotives as described in claim 1, characterized in that... The inner end of the tile nose is connected to the middle section of the tile back body through two welds, and the inner side of each weld does not exceed the inner side of the middle section of the tile back body.

3. The powder metallurgy brake shoe backing for electric locomotives as described in claim 1 or 2, characterized in that... The two positioning baffles are symmetrically arranged around the center line of the tile nose.

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