Brake cooling system and vehicle

Abstract

The utility model relates to a brake, in order to solve the problem of heat dissipation of a dry brake, the utility model provides a brake cooling system and a vehicle, and the brake cooling system comprises the dry brake, a pressurized air supply device, a control valve and a vortex tube; the vortex tube is arranged beside the dry brake, a cold end exhaust port of the vortex tube faces a brake friction device of the dry brake, and a compressed air inlet of the vortex tube is connected with the pressurized air supply device through an air pipe and a control valve. Cooling air with the temperature lower than the normal temperature is generated through the vortex tube, and brake friction devices of the brake can be cooled more efficiently.

Description

Technical Field

[0001] The utility model relates to a brake, and more particularly to a brake cooling system and a vehicle. Background Art

[0002] Construction machinery such as loaders often use dry axles, on which dry brakes are installed. When the brakes are applied, the friction between the brake disc and the friction pad generates a large amount of heat.

[0003] On loaders, the brake disc and friction pad are usually cooled by natural airflow, which is slow to cool and easily generates high brake temperatures. Long-term braking and high temperature conditions can easily cause the brake disc to overheat, resulting in reduced braking performance or even brake failure.

[0004] Chinese patent document CN 210526507 U discloses an air-cooled brake heat dissipation system. In this technical solution, compressed air is directly sprayed onto the brake for heat dissipation. The compressed air is at room temperature, and the effect of spraying it onto the brake friction device to cool it is poor. Under some extreme working conditions, the brake friction device of the brake generates high temperature due to heavy load and frequent braking of the vehicle. Spraying room temperature air onto the brake friction device is difficult to meet the heat dissipation requirements of the brake, and cannot ensure the safe and efficient operation of the brake. Utility Model Content

[0005] The technical problem to be solved by the utility model is the heat dissipation of a dry brake, and a brake cooling system and a vehicle are provided.

[0006] The utility model provides a technical solution to achieve its purpose: a brake cooling system, comprising a dry brake, a pressurized air supply device, a control valve, and a vortex tube; the vortex tube is arranged beside the dry brake, its cold end exhaust port faces the brake friction device of the dry brake, and its compressed air inlet is connected to the pressurized air supply device through an air pipe and a control valve.

[0007] In the brake cooling system of the utility model, the dry brake is a disc brake. Further, a plurality of vortex tubes are arranged on one side of the brake disc of the disc brake. Or at least one vortex tube is arranged on each side of the brake disc of the disc brake.

[0008] In the brake cooling system of the utility model, the cold end exhaust port of the vortex tube is equipped with an airflow guide nozzle, which guides the flow direction of the cold air discharged from the cold end exhaust port of the vortex tube to blow the cold air to the desired position of the brake friction device.

[0009] In the brake cooling system of the utility model, the hot end exhaust port of the vortex tube faces away from the brake friction device of the dry brake and is communicated with the atmosphere.

[0010] In the brake cooling system of the utility model, the system further comprises a controller, a temperature sensor electrically connected to the controller for detecting the temperature of the brake friction device, and the control valve is a solenoid valve electrically connected to the controller. Further, the pressurized air supply device comprises an air tank, an air compressor connected to the air tank, and the control valve is connected to the air tank.

[0011] The utility model provides a technical solution for achieving the purpose: a vehicle having the above brake cooling system. Further, the vehicle is a loader, and the dry brake is arranged on a driving axle.

[0012] Compared with the prior art, the utility model utilizes the vortex tube to generate cooling air with a temperature lower than normal temperature, so as to cool the brake friction device of the brake more efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the brake cooling system of the utility model.

[0014] Figure 2 The utility model is a schematic diagram of the arrangement structure of the vortex tube and the brake in the brake cooling system.

[0015] Figure 3 This is a schematic diagram of the layout of the vortex tube and the brake in the brake cooling system of the utility model. Figure 2 .

[0016] Parts names and serial numbers in the figure:

[0017] Engine 1 , air compressor 2 , air tank 3 , control valve 4 , vortex tube 5 , air flow guide nozzle 51 , air pipe 52 , disc brake 6 , brake disc 61 . DETAILED DESCRIPTION

[0018] The specific implementation scheme is described below with reference to the accompanying drawings.

[0019] like Figure 1 Figure 2 As shown, the brake cooling system includes a dry brake, a pressurized air supply device, a control valve 4, and a vortex tube 5; the vortex tube 5 is arranged beside the dry brake, and its cold end exhaust port faces the brake friction device of the dry brake, and its compressed air inlet is connected to the pressurized air supply device through the air pipe 52 and the control valve 4.

[0020] In this embodiment, when the temperature of the brake friction device is too high, the control valve can be opened, and the pressurized air supplied by the pressurized air supply device flows to the vortex tube 5 through the control valve 4 and the air pipe 52. The cold air flows out of the cold end of the vortex tube 5 and sprays toward the brake friction device of the dry brake, so that the brake friction device is quickly cooled down.

[0021] Optionally, the dry brake is a disc brake 6, and a plurality of vortex tubes 5 are arranged on one side of a brake disc 61 of the disc brake 6; or at least one vortex tube is arranged on each side of the brake disc 61, and the vortex tubes 5 can be arranged in rows or in longitudinal rows, or in an array. The cold end exhaust port of the vortex tube 5 can be directly facing the brake disc 61 (parallel to the axial direction of the brake disc), or the cold air ejected from the cold end exhaust port of the vortex tube 5 can be sprayed obliquely toward the brake disc 61.

[0022] Alternatively, if Figure 3 As shown, the cold end exhaust port of the vortex tube 5 is equipped with an airflow guide nozzle 51. The airflow guide nozzle 51 guides the flow direction of the cold air discharged from the cold end exhaust port of the vortex tube 5 so that the cold air is blown to the desired position of the brake friction device. The airflow guide nozzle can be trumpet-shaped, nozzle-shaped, or elbow-shaped. The airflow guide nozzle 51 is used to change the ejection direction of the cold air, the shape of the cold air flow field after ejection, etc., so that it meets the cooling requirements of the disc brake 6.

[0023] Optionally, the hot end exhaust port of the vortex tube 5 faces away from the brake friction device of the dry brake and communicates with the external atmosphere. In some embodiments, the hot air discharged from the hot end exhaust port of the vortex tube 5 can also be recycled, for example, guided to the cab through a pipeline to heat the cab.

[0024] Optionally, the brake cooling system further comprises a controller, a temperature sensor electrically connected to the controller for detecting the temperature of the brake friction device, and the control valve is a solenoid valve electrically connected to the controller. The pressurized air supply device comprises an air tank 3, an air compressor 2 connected to the air tank 3, and a control valve 4 connected to the air tank 3. Figure 1 As shown, the air compressor 2 is driven by a power device such as an engine 1 or an electric motor. After the power device is started, the air compressor 2 works to charge the air tank 3. When the temperature sensor detects that the temperature of the brake disc 61 (i.e., the brake friction device) of the dry brake reaches a predetermined value, the controller controls the control valve to open, the air tank releases pressurized air, and the vortex tube discharges cold air to cool the brake disc.

[0025] This embodiment also provides a vehicle having the aforementioned brake cooling system. The vehicle may be a transport vehicle, such as a transport truck, wherein the dry brake may be a drum brake. The vehicle may also be a loader, wherein the dry brake is a disc brake, which is arranged on a drive axle.

[0026] In this embodiment, the brake cooling system uses a vortex tube to generate cold air, and the temperature of the cold air can reach below zero. Compared with air at normal temperature, when the cold air is sprayed onto the brake friction device, the brake friction device can be cooled down quickly, and the cooling effect on the brake is more effective.

Claims

1. A brake cooling system, comprising a dry brake, characterized in that: It also includes a pressurized air supply device, a control valve, and a vortex tube; the vortex tube is arranged beside the dry brake, its cold end exhaust port faces the brake friction device of the dry brake, and its compressed air inlet is connected to the pressurized air supply device through an air pipe and a control valve.

2. The brake cooling system according to claim 1, characterized in that: The dry brake is a disc brake.

3. The brake cooling system according to claim 2, characterized in that: A plurality of vortex tubes are arranged on one side of a brake disk of a disk brake.

4. The brake cooling system according to claim 2, characterized in that: At least one vortex tube is arranged on each of the two sides of a brake disk of the disk brake.

5. The brake cooling system according to claim 1, characterized in that: The cold end exhaust port of the vortex tube is equipped with an air flow guide nozzle.

6. The brake cooling system according to claim 2, characterized in that: The hot end exhaust port of the vortex tube faces away from the brake friction device of the dry brake and is connected to the atmosphere.

7. The brake cooling system according to claim 1, characterized in that: The pressurized air supply device includes an air tank and an air compressor connected to the air tank, and the control valve is connected to the air tank.

8. The brake cooling system according to any one of claims 1 to 7, characterized in that: The system also includes a controller and a temperature sensor electrically connected to the controller for detecting the temperature of the brake friction device. The control valve is an electromagnetic valve electrically connected to the controller.

9. A vehicle, characterized in that: A brake cooling system according to any one of claims 1 to 8.

10. The vehicle according to claim 9, characterized in that The vehicle is a loader, and its dry brake is arranged on the drive axle.

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