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Wearing pad for axle box of railway wagon

A technology for railway freight cars and wear-resistant pads, applied in the field of wear-resistant pads, can solve the problems of reduced service life, large friction coefficient, and large friction loss between side frames and bearing saddles, so as to reduce maintenance costs, prolong service life, reduce The effect of the coefficient of friction

Active Publication Date: 2011-09-28
HEBEI XINJI TENGYUE INDAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bearing saddle of this kind of axle box is in direct contact with the side frame, and the friction coefficient is relatively large, which makes the vehicle inflexible and slow when turning
Moreover, the side frame and the bearing saddle wear a lot, which reduces the service life of the two, which leads to the need to repair or replace the bearing saddle or side frame after the vehicle has been running for a certain period of time, and the cost is relatively high

Method used

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  • Wearing pad for axle box of railway wagon
  • Wearing pad for axle box of railway wagon
  • Wearing pad for axle box of railway wagon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: the preparation process of this wear-resistant pad is:

[0022] (1) The raw materials of the wear-resistant material are dried at 165°C for 120 hours, cooled, and then mixed evenly; the wear-resistant material uses the following weight raw materials: sepiolite fiber 30kg, glass fiber 3kg, kaolin 8kg, wollastonite fiber 5kg, graphite grain 16kg, red copper cotton 2kg, titanium dioxide 1kg, phosphorus flake graphite 5kg.

[0023] (2) Preheat the dried wear-resistant raw materials at 75°C for 45 minutes, and then at 80°C for 45 minutes.

[0024] (3) Add the raw materials of pre-impregnated resin glue glass cloth, impregnated chopped fiber and preheated wear-resistant material in sequence in the mold cavity, and press the mold; demoulding can obtain the pad main body;

[0025] During the molding process, mold temperature control: upper mold 230°C, lower mold 200°C;

[0026] Pressure control: 25Mpa;

[0027] Holding time: 50 minutes.

[0028] Then, put the ...

Embodiment 2

[0030] Embodiment 2: the preparation process of this wear-resistant pad is:

[0031] (1) The raw materials of the wear-resistant material are dried at 160°C for 25 hours, cooled, and then mixed evenly; the wear-resistant material uses the following weight raw materials: sepiolite fiber 25kg, glass fiber 2.5kg, kaolin 10kg, wollastonite Fiber 4kg, graphite grain 19kg, red copper cotton 2.5kg, titanium dioxide 1.5kg, phosphorus flake graphite 4kg.

[0032] (2) Preheat the raw material of the wear-resistant material after drying at 65° C. for 50 minutes, and then at 85° C. for 40 minutes.

[0033] (3) Add the raw materials of pre-impregnated resin glue glass cloth, impregnated chopped fiber and preheated wear-resistant material in sequence in the mold cavity, and press the mold; demoulding can obtain the pad main body;

[0034] During the molding process, mold temperature control: upper mold 220°C, lower mold 190°C;

[0035] Pressure control: 25Mpa;

[0036] Holding time: 60 m...

Embodiment 3

[0039] Embodiment 3: the preparation process of this wear-resistant pad is:

[0040] (1) The raw materials of the wear-resistant material are dried at 170°C for 15 hours, cooled, and then mixed evenly; the wear-resistant material uses the following weight raw materials: sepiolite fiber 35kg, glass fiber 3.5kg, kaolin 6kg, wollastonite Fiber 6kg, graphite grain 13kg, red copper cotton 1.5kg, titanium dioxide 0.5kg, phosphorus flake graphite 6kg.

[0041] (2) Preheat the dried wear-resistant raw materials at 85°C for 40 minutes, and then at 75°C for 50 minutes.

[0042] (3) Add the raw materials of pre-impregnated resin glue glass cloth, impregnated chopped fiber and preheated wear-resistant material in sequence in the mold cavity, and press the mold; demoulding can obtain the pad main body;

[0043] During the molding process, mold temperature control: upper mold 240°C, lower mold 210°C;

[0044] Pressure control: 20Mpa;

[0045] Holding time: 40 minutes.

[0046] Then, put...

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Abstract

The invention discloses a wearing pad for an axle box of a railway wagon. The wearing pad is used between a carrying saddle and a side frame of the axle box and comprises a pad main body, wherein the pad main body comprises a base plate and projecting flanges on both sides of the base plate; the length of the base plate between the two flanges is adapted to the width of the carrying saddle, and the width of the base plate is adapted to that of the side frame; and the base plate of the pad main body is provided with a conductive copper pillar which passes through the base plate. The wearing pad prevents direct friction between the side frame and the carrying saddle so as to reduce friction coefficient and enable a vehicle to make a turn rapidly and flexibly, so that the wearing pad has a certain function of accelerating the speed of a train and improves the safety of speed acceleration of the vehicle. Secondly, the side frame is not directly contacted with the carrying saddle but is infriction with the wearing pad, so the abrasion losses of the side frame and the carrying saddle are reduced, the service lives of the side frame and the carrying saddle are greatly prolonged and the maintenance cost of the vehicle is lowered.

Description

technical field [0001] The invention relates to a wear-resistant pad, in particular to a wear-resistant pad used for the axle box of a railway freight car. Background technique [0002] The railway freight car bogie is installed on the two wheel sets, and is mainly composed of three major parts such as two side frames and a bolster. The two side frames are respectively installed on the two wheel axles through the two axle boxes. The axle box is a component that is sleeved on the journal to connect the wheel set and the bogie frame or the body of the two-axle vehicle. Its function is to transfer the weight and load of the vehicle body to the wheel set, lubricate the journal, reduce friction, and reduce running resistance. According to the type of bearing used, the axle box device is divided into two types: sliding bearing axle box device and rolling bearing axle box device. The early rolling stock used the sliding bearing axle box device, and the rolling bearing axle box de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61F5/26B32B3/28B32B17/04B32B17/06C04B30/02
Inventor 刘占峰
Owner HEBEI XINJI TENGYUE INDAL