Rail wagon high-friction-coefficient brake shoe friction body and brake shoe

A high friction coefficient technology for railway wagons, applied in friction linings, other chemical processes, mechanical equipment, etc., can solve problems such as low compressive strength, low bending strength and impact strength, potential safety hazards for vehicles, and reduced wheel protection. Achieve low elastic modulus, less environmental pollution, and inhibit metal embedding

Inactive Publication Date: 2017-05-24
CHONGQING YUHONG RAIL CAR ACCESSORIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the friction bodies in the prior art cannot meet the needs of high-speed driving due to their low compressive strength, bending strength, and impact strength; Its service life, and there is a certain hidden danger to the safe driving of the vehicle; in addition, the damage to the wheel is also relatively large, which reduces the protective effect on the wheel

Method used

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  • Rail wagon high-friction-coefficient brake shoe friction body and brake shoe
  • Rail wagon high-friction-coefficient brake shoe friction body and brake shoe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1) Prepare and weigh the components of the friction body according to the aforementioned mass ratio: 9% nitrile rubber, 7% cashew nut shell oil modified phenolic resin, 6% steel fiber, 15% sepiolite fiber, 25% barium sulfate, iron 20% powder, 6% graphite, 9.4% feldspar powder, 0.7% calcined bauxite, 0.4% accelerator, 0.4% stearic acid, 0.5% zinc oxide, 0.6% sulfur, satisfying the sum of the mass of each component to reach 100% requirements.

[0042] 2) Smelting: Preliminary mixing of phenolic resin, steel fiber, sepiolite fiber, barium sulfate, reduced iron powder, graphite, feldspar powder, calcined bauxite and zinc oxide; mastication of nitrile rubber, plastication Finally, adjust the stick distance and add the chaotic material, add accelerator and stearic acid for a certain period of refining time, and add sulfur in the last 1-3 minutes. Pay attention to the time and temperature of the refining.

[0043] A synthetic brake shoe for railway wagons, including a tile bac...

Embodiment 2

[0047] Prepare and weigh the components of the friction body according to the aforementioned mass ratio: 10% nitrile rubber, 10% cashew nut shell oil modified phenolic resin, 5% steel fiber, 16% sepiolite fiber, 23% barium sulfate, and 19% iron powder %, 5% graphite, 9% feldspar powder, 1.0% calcined bauxite, 0.35% accelerator, 0.45% stearic acid, 0.5% zinc oxide, and 0.7% sulfur, meeting the requirement that the sum of the mass of each component reach 100% .

[0048] 2) Smelting: Preliminarily mix phenolic resin, steel fiber, sepiolite fiber, barium sulfate, reduced iron powder, graphite, feldspar powder, and calcined bauxite, weigh a certain amount of nitrile rubber for plastication, and plasticize After refining, adjust the stick distance and add the chaotic material, add accelerator and stearic acid for a certain period of refining, and add a certain proportion of sulfur in the last 1-3 minutes. Pay attention to the time and temperature of the refining.

[0049] A synthe...

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PUM

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Abstract

The invention discloses a rail wagon high-friction-coefficient brake shoe friction body and brake shoe. The brake shoe friction body is composed of 9%-12% of butyronitrile rubber, 7%-10% of cashew nut shell oil modified phenolic resin, 4%-7% of steel fiber, 15%-23% of sepiolite fiber, 22%-27% of barium sulfate, 19%-22% of reduction iron powder, 5%-9% of graphite, 8%-12% of feldspar powder, 0.4%-1.3% of calcined bauxite, 0.26%-1% of accelerants, 0.3%-1% of stearic acid, 0.4%-1% of zinc oxide and 0.67%-1.2% of sulfur and is obtained through open mill, plastication and crushing. The brake shoe friction body is stable in friction performance, good in abrasion resistance and small in environmental pollution, can be used in rail high-speed heavy-load wagons, has stable friction coefficient and good abrasion resistance, can meet the operating requirements of wagons of which the maximum operating speed is 120 km / h and the axle weight is not larger than 25 t, has high compression strength, bending strength and impact strength as well as low elastic modulus, and can prevent cracking, slag falling, block falling, fracturing and other phenomena.

Description

technical field [0001] The invention belongs to train friction braking accessory parts, in particular to a brake shoe friction body with high friction coefficient for railway wagons and a brake shoe using the brake shoe friction body. Background technique [0002] The "brake pads" used on trains are called "brake shoes". The brake shoes on the train are installed on the front and rear sides of the train wheel tread. When braking is required, the air brake is operated to give way to the two brake shoes at the front and rear of the wheel and clamp the wheel. The friction body of the brake shoe and the The treads of the wheels contact and generate friction. Under the action of friction, the kinetic energy of the train is converted into heat energy and dissipated into the air, which simultaneously slows down or stops the train. [0003] Brake shoes can be divided into cast iron brake shoes and synthetic brake shoes according to their materials. Synthetic brake shoes mainly incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02F16D65/04B29C43/58B29C35/02C09K3/14
CPCF16D69/02B29C35/02B29C43/58B29C2043/5808B29C2043/5816F16D65/04F16D2200/006
Inventor 任昭红巨虹宗赵宏戌邱华
Owner CHONGQING YUHONG RAIL CAR ACCESSORIES CO LTD
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