Locomotive composite brake shoe shoe back

Abstract

The utility model discloses a locomotive synthetic brake shoe, including the shoe back body of arc, the arc shoe nose of integrally being located in the middle part of shoe back body, each two rectangular material holes of being located in the both sides of arc shoe nose, two longitudinal locating shoe block of being fixed on the shoe back body outside each side rectangular material hole, the shoe signature hole is equipped with in the both sides of arc shoe nose, be equipped with the reinforcing plate with the inner arc surface fixed connection of arc shoe nose both sides shoe back body below arc shoe nose, the inboard surface fixed connection of reinforcing plate has two above quincunx petal material hole, the shoe back body of arc shoe nose both sides all is equipped with the positioning hole. The utility model can improve the holding force of synthetic friction body material and the connecting strength with brake shoe bracket, thereby prevent the friction body material from falling off, improve the connecting strength of braking system, can guarantee the braking effect and the safety of braking system.

Description

Technical Field

[0001] This utility model relates to a composite brake shoe backing for railway locomotives. Background Technology

[0002] The composite brake shoes of railway locomotives are formed by bonding and pressing the composite brake shoe back and the friction body together. The composite brake shoes are installed on the locomotive brake shoe bracket in the braking system and need to withstand significant loads during braking. Because the friction body material of the composite brake shoe has relatively low bonding strength, gripping holes are required on the composite brake shoe back to prevent the two parts from falling off and to improve load-bearing capacity. Existing locomotive composite brake shoe backs include an arc-shaped back body, an arc-shaped nose located in the middle of the arc-shaped back body, and two noses on each side of the arc-shaped nose. The locomotive has rectangular gripping holes and two longitudinal positioning pads fixed to the outer side of the rectangular gripping holes on the back of the pad. The two sides of the arc-shaped pad nose are provided with pad stick holes. The two longitudinal positioning pads and pad stick holes are connected to the brake shoe bracket of the locomotive braking system. Friction material is embedded in each rectangular gripping hole. However, the gripping force of each rectangular gripping hole on the synthetic friction material is limited and it is easy to fall off. The connection strength and reliability of the positioning pads and pad stick holes with the brake shoe bracket are poor and they are easy to deform, all of which affect the braking effect and the safety of the braking system. Summary of the Invention

[0003] The purpose of this utility model is to address the aforementioned shortcomings of the existing technology by providing a composite brake shoe backing for locomotives. This backing can improve the gripping force on the composite friction material and the connection strength with the brake shoe bracket, thereby preventing the friction material from falling off, improving the connection strength of the braking system, and ensuring braking performance and the safety of the braking system.

[0004] To achieve the above objectives, this utility model provides a composite brake shoe backing for locomotives, comprising an arc-shaped backing body, an arc-shaped nose on the middle of the backing body, two rectangular gripping holes on each side of the arc-shaped nose, and two longitudinal positioning brackets fixed to the backing body outside the rectangular gripping holes on each side. The arc-shaped nose has gripping holes on both sides. The key feature is that a reinforcing plate is provided below the arc-shaped nose and fixed to the inner arc surface of the backing body on both sides of the arc-shaped nose. The inner side of the reinforcing plate has two or more plum blossom-petal gripping holes fixed to it. Positioning holes are provided on the backing body on both sides of the arc-shaped nose.

[0005] This invention improves the gripping force on the synthetic friction material and prevents the friction material from falling off by adding a reinforcing plate with plum petal-shaped material gripping holes below the arc-shaped brake shoe nose; and improves the connection strength of the braking system by adding positioning holes on both sides of the brake shoe back body, which cooperate with the boss on the brake shoe bracket, thereby ensuring the braking effect and the safety of the braking system. As a further improvement of this utility model, each of the outer sides of the positioning hole is fixedly connected with a positioning pin. The outer axial end of the positioning pin is provided with a limiting step that cooperates with the back of the brake shoe. The inner axial end of the positioning pin passes through the inner arc surface of the back of the brake shoe. The positioning pin cooperates with the pin hole on the brake shoe bracket to connect the back of the brake shoe to the brake shoe bracket, which can further improve the connection strength of the braking system. As a further improvement of this utility model, each positioning hole and positioning pin is located on the width center line of the back of the brake shoe, and each rectangular gripping hole and each plum petal gripping hole are symmetrically arranged on both sides of the width center line of the back of the brake shoe; this can further improve the gripping force on the synthetic friction material and the connection strength with the brake shoe bracket. In summary, this invention can improve the gripping force on the synthetic friction material and the connection strength with the brake shoe bracket, thereby preventing the friction material from falling off, improving the connection strength of the braking system, and ensuring the braking effect and the safety of the braking system. 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 Top view.

[0008] Figure 3 for Figure 1 AA 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 locomotive composite brake shoe backing includes an arc-shaped backing body 1, an arc-shaped brake nose 2 integrally fixed in the middle of the backing body, two rectangular material-grabbing holes 3 on each side of the arc-shaped brake nose 2, and two longitudinal positioning brake supports 4 welded and fixed to the outer sides of the brake backing body 1 of each side rectangular material-grabbing hole 3. Brake stick holes 5 are provided on both sides of the arc-shaped brake nose 2. A reinforcing plate 6 is provided below the arc-shaped brake nose 2 and welded and fixed to the inner arc surface of the brake backing body 1 on both sides of the arc-shaped brake nose. The inner surface of the reinforcing plate 6 is welded and fixed. There are two plum blossom petal-shaped material grabbing holes 7; the back body 1 on both sides of the arc-shaped tile nose 2 is provided with positioning holes 8, and a positioning pin 9 is welded and fixed to the back body 1 outside each positioning hole 8. The outer axial end of the positioning pin 9 is provided with a limiting step that cooperates with the back body 1, and the inner axial end of the positioning pin 9 passes through the inner arc surface of the back body; each positioning hole 8 and positioning pin 9 is located on the width center line of the back body 1, and each rectangular material grabbing hole 3 and each plum blossom petal-shaped material grabbing hole 7 are symmetrically arranged on both sides of the width center line of the back body.

[0011] This invention adds a reinforcing plate 6 with plum blossom petal-shaped gripping holes 7 below the arc-shaped brake shoe nose 2. The rectangular gripping holes 3 and the two plum blossom petal-shaped gripping holes 7 work together to improve the gripping force on the synthetic friction material and prevent the friction material from falling off. Positioning holes 8 and positioning pins 9 are added to both sides of the brake shoe back 1. They cooperate with the bosses and pin holes on the brake shoe bracket to connect the brake shoe back 1 to the brake shoe bracket, which can improve the connection strength of the braking system. In addition, all positioning holes 8 and positioning pins 9 are located on the width center line of the brake shoe back 1, and all rectangular gripping holes 3 and plum blossom petal-shaped gripping holes 7 are symmetrically arranged on both sides of the width center line of the brake shoe back 1, so that the gripping force area is large and the force is uniform, which further improves the gripping force on the synthetic friction material and the connection strength with the brake shoe bracket, thereby ensuring the braking effect and the safety of the braking system.

Claims

1. A composite brake shoe backing for locomotives, comprising an arc-shaped backing body, an arc-shaped nose on the center of the backing body, two rectangular gripping holes on each side of the arc-shaped nose, and two longitudinal positioning brackets fixed to the backing body outside the rectangular gripping holes on each side; the arc-shaped nose has gripping holes on both sides; characterized in that... Below the arched tile nose, there is a reinforcing plate that is fixedly connected to the inner arc surface of the tile back on both sides of the arched tile nose. The inner side of the reinforcing plate is fixedly connected to two or more plum petal-shaped material grabbing holes. The tile back on both sides of the arched tile nose is provided with positioning holes.

2. The composite brake shoe backing of a locomotive as described in claim 1, characterized in that... Each of the positioning holes has a positioning pin fixed to the outer side of the tile back body. The outer axial end of the positioning pin is provided with a limiting step that cooperates with the tile back body, and the inner axial end of the positioning pin passes through the inner arc surface of the tile back body.

3. The composite brake shoe backing of a locomotive as described in claim 2, characterized in that... Each positioning hole and positioning pin is located on the center line of the width of the tile back body, and each rectangular material grabbing hole and each plum petal material grabbing hole are symmetrically arranged on both sides of the center line of the width of the tile back body.

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