Powder metallurgy brake lining for CRH5 (China railway high-speed) motor train unit

A technology of powder metallurgy and EMUs, applied in the field of brake pads, can solve problems such as increased material wear, inability to ensure uniform diffusion of heat energy, thermal cracks on the surface of brake pads, etc., to prevent rotation and loosening, complete reliability of braking performance, and reduce The effect of cost of use

Active Publication Date: 2013-12-25
北京浦然轨道交通科技股份有限公司 +1
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Problems solved by technology

However, since the thickness of the steel back is only 3mm, the steel back is easily thermally deformed during welding, and there is still residual stress, which directly affects the uneven friction surface of the brake pad and the brake disc, and the steel back and the brake disc are not flat. There is no clearance adjustment between the friction bodies. When the brake pads are subjected to contact pressure from the rotating brake disc, the force on the

Method used

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  • Powder metallurgy brake lining for CRH5 (China railway high-speed) motor train unit
  • Powder metallurgy brake lining for CRH5 (China railway high-speed) motor train unit
  • Powder metallurgy brake lining for CRH5 (China railway high-speed) motor train unit

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[0025] The present invention will be described in detail below in conjunction with the drawings and embodiments.

[0026] Such as Figure 1 ~ Figure 7 As shown, the present invention includes 5 brake pad friction bodies 1, a dovetail block 2, a steel back plate 3, 5 rivets 4, 5 large washers 5, 5 small washers 6, 5 butterfly shrapnels 7 , 15 split pins 8 and 6 flat head rivets 9.

[0027] Such as Figure 5 , Figure 8 , Picture 9 As shown, the five brake pad friction bodies 1 of the present invention are firmly connected to the front of the steel back plate 3, and each brake pad friction body 1 includes an equilateral triangle friction body skeleton 11 with three arc-shaped chamfers. And a friction body 12 arranged on the upper surface of the friction body skeleton 11 and having the same shape as the friction body skeleton 11. A stepped hole 13 is provided in the center of the friction body frame 11, and a guide hole 14 is provided on the three arc chamfers of the friction body ...

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Abstract

The invention relates to a powder metallurgy brake lining for the CRH5 (China railway high-speed) motor train unit. The powder metallurgy brake lining is characterized by comprising 5 brake lining friction bodies, 1 dovetail block, 1 steel back plate, 5 rivets, 5 large gaskets, 5 small gaskets, 5 butterfly-shaped shrapnels, 15 cotter pins and 6 flush head rivets; the 5 friction brake lining bodies are fastened at the front part of the steel back plate; each brake lining friction body is formed by an equilaterally triangular friction body skeleton with three arc chamfers and a friction body; the section of the dovetail block is in a W-shaped long plate structure; the steel back plate is in an irregular hexagonal plate structure; the back of the steel back plate is connected with the dovetail block; the front part of the steel back plate is riveted with the 5 brake lining friction bodies by the large gaskets, the small gaskets and the butterfly-shaped shrapnels at intervals; all pin joint holes in the steel back plate are respectively connected with one ends of the cotter pins; the other ends of the cotter pins are correspondingly suspended in guide holes in all friction body skeletons. Process holes are formed in the upper, lower and arc edges of the steel back plate.

Description

technical field [0001] The invention relates to a brake pad, in particular to a powder metallurgy brake pad for a CRH5 type EMU capable of friction braking at a speed of 200-250 km / h. Background technique [0002] At present, most of the existing EMU vehicles are used for powder metallurgy brake pad friction bodies with a speed of 200-250km / h. The dovetail blocks are connected by welding process, which is relatively simple and saves cost. However, since the thickness of the steel back is only 3mm, the steel back is easily thermally deformed during welding, and there is still residual stress, which directly affects the uneven friction surface of the brake pad and the brake disc, and the steel back and the brake disc are not flat. There is no clearance adjustment between the friction bodies. When the brake pads are subjected to contact pressure from the rotating brake disc, the force on the contact surface will be uneven, which will affect the stability of the braking perform...

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Application Information

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IPC IPC(8): F16D69/00F16D69/04
Inventor 冯友琴黄启镇
Owner 北京浦然轨道交通科技股份有限公司
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