CN205118081U - High -speed EMUs axle dress brake disc - Google Patents

Abstract

<b>Axle-mounted brake discs for high-speed EMUs, including inner brake discs, outer brake discs and heat dissipation columns. A set of connecting blocks are fixed between the inner brake discs and outer brake discs. The inner ring holes of the outer disk are distributed in a circle, and the gap between the brake inner disk and the brake outer disk forms the supporting area of the heat dissipation column, and several groups of circularly distributed heat dissipation holes are opened on the brake outer disk, and the There is an included angle between the center line of the heat dissipation hole and the surface of the brake outer disc, and a heat dissipation column is welded in the heat dissipation hole, the heat dissipation column is cylindrical, and the two ends of the heat dissipation column are respectively fixed on the brake outer disc and In the cooling hole corresponding to the moving inner disk; the utility model has good braking and heat dissipation performance, and adopts the method of forging and welding to weld the heat dissipation column between the two brake disks, so as to ensure the effective heat dissipation area and improve the metal material of the friction surface. Mechanical properties, thereby improving the overall service life and performance of the brake disc. </b>

Description

Shaft-mounted brake discs for high-speed EMUs

technical field

The utility model belongs to the field of locomotive brakes, in particular to a shaft-mounted brake disk for high-speed train sets.

Background technique

Brake discs are key components of high-speed trains and play an important role in the braking of trains. Due to the complex and harsh working environment and inconvenient maintenance and replacement, brake disc products must have a relatively stable heat dissipation capacity and a long service life. However, the heat of the currently used brake discs is often not dissipated in time, which will cause thermal decay and reduce the braking performance, which directly affects its service life. In addition, the brake discs on the market are often made of casting or simple forging. Or the heat dissipation performance often fails to meet the requirements.

Contents of the invention

The technical problem to be solved by the utility model is to provide a shaft-mounted brake disc for a high-speed EMU, which has good heat dissipation performance, material mechanical properties and long service life in view of the deficiencies of the prior art.

The technical scheme adopted by the utility model to solve the technical problem is: the shaft-mounted brake disc of the high-speed EMU includes a brake inner disc, a brake outer disc and a heat dissipation column, and a fixed brake disc is installed between the brake inner disc and the brake outer disc. A group of connecting blocks, the connecting blocks are distributed along the inner ring hole of the brake outer disc, the gap between the brake inner disc and the brake outer disc forms the supporting area of the heat dissipation column, and there are several groups on the brake outer disc. Annular distribution of heat dissipation holes, the heat dissipation holes correspondingly penetrate the brake inner disc, the number of the heat dissipation holes increases from the center of the ring to the outside, and the centerline of the heat dissipation holes is in line with the surface of the brake outer disc The included angle is 60 degrees, and a heat dissipation column is welded in the heat dissipation hole. The heat dissipation column is cylindrical and its diameter is 18-22mm. The two ends of the heat dissipation column are fixed on the brake outer disc and the brake inner disc respectively. inside the cooling holes.

Two groups of cooling holes distributed in a circular shape are provided on the brake outer disc, one group is provided with 12 cooling holes, and the other group is provided with 6 cooling holes.

The beneficial effects of the utility model are: the shaft-mounted brake disc of the high-speed EMU of the utility model is provided with a number of heat dissipation holes, which reduces the mass of the disc body and has good braking and heat dissipation performance, and adopts the method of forging and welding to integrate the heat dissipation column Welded between the two brake discs to ensure an effective heat dissipation area and improve the mechanical properties of the metal material on the friction surface, thereby improving the overall service life and performance of the brake disc; the connecting block serves as a connection between the inner brake disc and the outer brake disc Reinforcement effect, at the same time, it is convenient to increase the movement of the air when it rotates, enhance the air circulation, and accelerate the heat generated by braking.

Description of drawings

Fig. 1 is the structural representation of the utility model;

FIG. 2 is a schematic diagram of the right view of FIG. 1 . In the picture:

1. Brake inner disc, 2. Brake outer disc, 3. Cooling column, 4. Connecting block, 5. Inner ring hole, 6. Cooling hole.

detailed description

The technical scheme of the utility model is further illustrated below through specific examples.

As shown in Figure 1-2: high-speed EMU axle-mounted brake discs, including brake inner disc 1, brake outer disc 2 and heat dissipation column 3, the brake inner disc 1 and brake outer disc 2 are formed by forging; A group of connection blocks 4 are fixed between the brake inner disk 1 and the brake outer disk 2, and the connection blocks 4 are distributed along the inner ring hole 5 of the brake outer disk 2; the cross section of the connection block 4 can be rectangular Or isosceles trapezoidal; the use of the connecting block 4, on the one hand, plays a role in strengthening the connection between the brake inner disc 1 and the brake outer disc 2, and on the other hand increases the contact area with the air, which is convenient for increasing the movement of the air when it rotates , Enhance the air circulation, accelerate the discharge of heat generated by braking, and reduce the heat transferred to the hub.

The gap between the brake inner disc 1 and the brake outer disc 2 forms the supporting area of the heat dissipation column 3, and several groups of circularly distributed heat dissipation holes 6 are opened on the brake outer disc 2, and the heat dissipation holes 6 correspond to Through the brake inner disc 1, the number of the heat dissipation holes 6 increases sequentially from the center of the ring to the outside. For better heat dissipation, two groups of heat dissipation holes in a circular distribution are opened on the brake outer disc 2 6. One group has 12 cooling holes 6, and the other group has 6 cooling holes.

In order to be more conducive to heat dissipation, there is an angle between the center line of the heat dissipation hole 6 and the surface of the brake outer disc 2, and the angle is 60 degrees. A heat dissipation column 3 is welded in the heat dissipation hole 6. The utility model The shaft-mounted brake disc of high-speed EMU adopts the combination of forging and welding, and the heat dissipation column 3 is welded between the outer brake disc 2 and the inner brake disc 1, which increases the effective heat dissipation area and improves the mechanical properties of the metal material on the friction surface. Thus improving the overall service life and performance of the brake disc.

The heat dissipation column 3 is cylindrical, and its diameter is 18-22mm. An air flow channel is formed between the pillars 3 to facilitate the discharge of heat generated during braking.

The shaft-mounted brake disc of the high-speed EMU of the utility model is provided with a number of heat dissipation holes 6, which reduces the mass of the disc body, makes the brake disc light and durable, and has good braking and heat dissipation performance. The column is welded between the two brake discs to ensure an effective heat dissipation area and improve the mechanical properties of the metal material on the friction surface, thereby improving the overall service life and performance of the brake disc.

Except for the technical features described in the description, all are technologies known to those skilled in the art.

Claims (2)

1. Axle-mounted brake discs for high-speed EMUs, including inner brake discs, outer brake discs and cooling columns, characterized in that a set of connecting blocks are fixed between the inner brake disc (1) and the outer brake disc (2) (4), the connecting blocks (4) are distributed along the inner ring hole of the brake outer disc (2), and the gap between the brake inner disc (1) and the brake outer disc (2) forms the heat dissipation column (3 ), there are several sets of cooling holes (6) distributed in a ring on the brake outer disc (2), and the cooling holes (6) correspondingly penetrate through the brake inner disc (1), so The number of the cooling holes (6) increases sequentially from the center of the ring outward, and the angle between the center line of the cooling holes (6) and the surface of the outer brake disc (2) is 60 degrees, and the inner diameter of the cooling holes (6) Weld a heat dissipation column (3), the heat dissipation column (3) is cylindrical, and its diameter is 18-22mm, and the two ends of the heat dissipation column (3) are respectively fixed on the brake outer disc (2) and the brake inside the corresponding cooling holes of the inner plate (1). 2. The shaft-mounted brake disc of high-speed EMU according to claim 1, characterized in that: two sets of cooling holes (6) distributed in a ring are opened on the outer brake disc (2), and one set is provided with 12 cooling holes (6), and another group is provided with 6 cooling holes (6).