Foundation braking system for high-speed motor train unit

Abstract

A basic braking system for a high-speed motor train unit comprises a brake disc, the brake disc is provided with a plurality of sets of heat dissipation air channels communicating an outer ring of the brake disc with a center hole of the brake disc, the multiple sets of heat dissipation air channels are symmetrically distributed with the center axis of the brake disc as the center, each set of heat dissipation air channels comprises a main air channel and a plurality of side air channels, and the main air channels are distributed in the radial direction of the brake disc; one end of the main air duct is communicated with an outer ring of the brake disc to form a main air inlet, the other end of the main air duct is communicated with a center hole of the brake disc to form an air outlet, the side air ducts are semi-arc-shaped air ducts, the diameters of the side air ducts are different, the side air ducts are concentrically arranged, and the middles of the side air ducts are communicated with the main air duct. The two ends of the side air channel are communicated with the outer ring of the brake disc to form side air inlets, and the main air inlet of the main air channel is in a horn shape with an inlet larger than an outlet. The air fluidity in the brake disc is greatly improved, heat accumulation generated during braking is prevented, and the heat dissipation performance of the brake disc is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of axle disc brake disc, in particular to a kind of for high-speed train set basic braking system. BACKGROUND

[0002] Braking device is often used on motor vehicle to brake, generally including brake disc and the brake caliper connected with it, the braking force of braking device comes from brake caliper, brake caliper is equipped with brake piston pump in its inside, its outside is a caliper type structure, outside brake pad (also called brake shoe) is fixed in the outside of caliper, the piston in its inside pushes inside brake pad, and simultaneously pulls caliper by reaction force, so that outside brake pad is inwards, and both are pressed to brake disc, and braking force is generated by the friction of brake disc and inside and outside brake pad (brake shoe), brake disc is generally annular disc body, the outer surface of annular disc body is smooth horizontal plane, caliper is arranged at the outside of brake disc and is engagedly connected with brake disc.

[0003] The existing brake disc has the problem that when braking, brake disc is in high-speed rotating state, and a large amount of heat is generated by mutual contact and friction with brake pad, because brake disc and brake pad are in close contact between plane and plane, the heat generated cannot be diffused in time, the heat can make brake disc temperature rise and even overheat, and then the friction coefficient of brake disc is reduced due to the overheating of itself, and then the braking effect of brake disc is affected. SUMMARY

[0004] The utility model solves the deficiency of prior art and provides a kind of for high-speed train set basic braking system of improving heat dissipation performance.

[0005] To realize the above-mentioned purpose, the utility model first proposes a kind of for high-speed train set basic braking system, including brake disc, brake disc is equipped with multiple sets of heat dissipation air ducts that brake disc outer ring is communicated with brake disc center hole, multiple sets of heat dissipation air ducts are symmetrically arranged with brake disc center shaft as center, heat dissipation air duct includes main air duct and multiple side air ducts, the main air duct is arranged along brake disc radial, one end of the main air duct is communicated with brake disc outer ring and forms main air inlet, the other end is communicated with the center hole of brake disc and forms air outlet, the side air duct is semicircular arc air duct, the diameter of multiple side air ducts is different and concentrically arranged, the middle part of side air duct is communicated with main air duct, and the two ends of side air duct are communicated with the outer ring of brake disc and constitute side air inlet, the main air inlet of main air duct is horn type with inlet larger than outlet.

[0006] In the embodiment, the brake disc includes two annular disc bodies, a center hole is arranged in the center of annular disc body, and heat dissipation ribs are symmetrically arranged on the opposite sides of the two annular disc bodies, and the heat dissipation ribs are enclosed in the two annular disc bodies to form the heat dissipation air duct after the two annular disc bodies are connected and fixed.

[0007] In this embodiment, two annular disc-shaped bodies of the brake disc are connected and fixed, and a wind groove in communication with the air outlet of the main air duct is formed in the central hole.

[0008] In this embodiment, the side air inlets of the side air ducts with the largest diameter in the adjacent heat dissipation air ducts are in communication with each other.

[0009] In this embodiment, each group of heat dissipation air ducts includes two side air ducts.

[0010] In this embodiment, a plurality of ventilation holes in communication with the heat dissipation air ducts are formed on the brake disc at positions corresponding to the heat dissipation air ducts.

[0011] With the above structure, the utility model has the following advantages:

[0012] 1. The device is provided with a plurality of groups of heat dissipation air ducts on the brake disc, and each group of heat dissipation air ducts includes a main air duct and a plurality of side air ducts, the main air inlet of the main air duct is a horn type with a larger inlet than outlet, and the side air duct is a semicircular arc type, so that when the brake disc rotates, the main air inlet and the side air inlet of the heat dissipation air duct facing the direction of vehicle travel inhale air, due to the horn type of the main air inlet with a larger inlet and a smaller outlet, the air entering the main air duct flows faster to the air outlet, and at the same time, the air in the side air duct flows faster, forming an air suction effect, thereby increasing the rate of air flowing through the brake disc, accelerating the convective heat exchange between the air and the brake disc, and further accelerating the cooling of the brake disc, so that the heat dissipation efficiency is effectively improved, the heat generated during braking is prevented from accumulating, and the service life of the brake disc is prolonged.

[0013] 2. The heat dissipation air duct is composed of heat dissipation ribs, so that the heat generated by the friction between the brake disc and the brake disc is quickly transferred to the heat dissipation ribs, and then dissipated through the rapidly flowing air in the heat dissipation air duct, thereby improving the heat dissipation efficiency.

[0014] 3. The main air inlet of the main air duct is a horn type with a larger inlet than outlet, which helps to guide more cooling air into the heat dissipation system, the side air duct is a semicircular arc, and the diameters of the plurality of side air ducts are different and concentrically arranged, thereby increasing the heat dissipation area and improving the heat dissipation efficiency.

[0015] 4. The heat dissipation air duct further improves the heat dissipation efficiency in cooperation with the ventilation holes on the brake disc.

[0016] In summary, the device greatly improves the air flow in the brake disc, prevents the heat generated during braking from accumulating, and improves the heat dissipation performance of the brake disc. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective view of the utility model.

[0018] Figure 2 It is a structural schematic view of the utility model.

[0019] In the drawings: 1, annular disc body; 2, air groove; 3, main air duct; 4, side air duct; 5, main air inlet; 6, side air inlet; 7, heat dissipation rib; 8, air vent. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] In addition, the technical solutions of the various embodiments of the present application can be combined with each other, but must be based on the fact that they can be realized by those skilled in the art. When the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0022] As shown in Figure 1 , 2 A high-speed motor train unit foundation braking system includes a brake disc, the brake disc includes two annular disc bodies 1, the center of the annular disc body 1 is provided with a center hole, and the two annular disc bodies 1 are symmetrically arranged with heat dissipation ribs 7 on the opposite sides. After the two annular disc bodies 1 are connected and fixed, the heat dissipation ribs 7 form a plurality of groups of heat dissipation air ducts in the enclosure of the two annular disc bodies 1. After the two annular disc bodies 1 of the brake disc are connected and fixed, an air groove 2 is formed in the center hole. The heat dissipation air ducts are in communication with the outer ring of the brake disc and the air groove 2 of the center hole of the brake disc. The plurality of groups of heat dissipation air ducts are symmetrically arranged with the center axis of the brake disc as the center. The heat dissipation air ducts include a main air duct 3 and a plurality of side air ducts 4. The main air duct 3 is arranged radially along the brake disc. One end of the main air duct 3 is in communication with the outer ring of the brake disc to form a main air inlet 5, and the other end is in communication with the center hole of the brake disc to form an air outlet. The side air duct 4 is a semicircular arc air duct. The plurality of side air ducts 4 are concentrically arranged with different diameters. The middle part of the side air duct 4 is in communication with the main air duct 3, and the two ends of the side air duct 4 are in communication with the outer ring of the brake disc to form a side air inlet 6. The main air inlet 5 of the main air duct 3 is a horn type with an inlet larger than an outlet. A plurality of air vents 8 are arranged on the brake disc at positions corresponding to the heat dissipation air ducts and are in communication with the heat dissipation air ducts.

[0023] In the present embodiment, each group of heat dissipation air ducts includes a first side air duct and a second side air duct. The diameter of the second side air duct is greater than that of the first side air duct. The side air inlets of the second side air ducts in adjacent heat dissipation air ducts are in communication with each other, thereby improving the air inlet amount of the side air duct.

[0024] The working process of the brake disc: before braking, the brake disc is in a high-speed rotating state; when braking starts, the brake cylinder pushes the brake pad to contact the brake disc, thereby generating friction, and a large amount of heat is generated by the friction; when the brake disc rotates, the main air inlet and the side air inlet facing the direction of vehicle travel intake air; since the main air inlet is a horn type, the inlet is large and the outlet is small, so that the air entering the main air duct accelerates to flow out of the air outlet, at the same time, the air in the side air duct is accelerated to flow, forming an air suction effect, thereby increasing the rate of air flowing through the brake disc, accelerating the air and the brake disc against heat, thereby accelerating the cooling of the brake disc, effectively improving the heat dissipation efficiency, preventing the accumulation of heat generated during braking, and prolonging the service life of the brake disc.

[0025] The above is only the preferred embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structural transformation, direct / indirect application in other related technical fields within the concept of the present application, and the contents of the present application are included in the patent protection range of the present application.

Claims

1. A high speed train foundation brake system comprising a brake disc, characterized in that: The brake disc is provided with a plurality of groups of heat dissipation air ducts which are symmetrically arranged around the central shaft of the brake disc and which are in communication with the outer ring of the brake disc and the central hole of the brake disc, each group of heat dissipation air ducts comprising a main air duct (3) and a plurality of side air ducts (4), the main air duct (3) being arranged along the radial direction of the brake disc, one end of the main air duct (3) being in communication with the outer ring of the brake disc to form a main air inlet (5), and the other end being in communication with the central hole of the brake disc to form an air outlet, the side air ducts (4) being semicircular air ducts, the plurality of side air ducts (4) being arranged concentrically and having different diameters, the middle part of each side air duct (4) being in communication with the main air duct (3), and both ends of each side air duct (4) being in communication with the outer ring of the brake disc to form a side air inlet (6), the main air inlet (5) of the main air duct (3) being a horn type with the inlet being larger than the outlet.

2. The foundation brake system for high speed train according to claim 1, characterized in that: The brake disc comprises two annular disc-shaped bodies (1), the central part of each annular disc-shaped body (1) being provided with a central hole, and the two annular disc-shaped bodies (1) being symmetrically arranged with respect to one side and provided with heat dissipation ribs (7), the heat dissipation ribs (7) being enclosed in the two annular disc-shaped bodies (1) after the two annular disc-shaped bodies (1) are connected and fixed to form the heat dissipation air ducts.

3. The foundation brake system for high speed train according to claim 2, characterized in that: The two annular disc-shaped bodies (1) of the brake disc are connected and fixed, and a wind groove (2) is formed in the central hole and in communication with the air outlet of the main air duct (3).

4. The high speed train foundation brake system of claim 1, wherein: The side air inlets (6) of the side air ducts (4) with the largest diameters in the adjacent heat dissipation air ducts are in communication with each other.

5. The foundation brake system for high speed train according to claim 4, characterized in that: Each group of heat dissipation air ducts comprises two side air ducts (4).

6. The foundation brake system for high speed train according to any one of claims 1 to 5, characterized in that: A plurality of ventilation holes (8) are formed in the brake disc and in communication with the heat dissipation air ducts.

Images