| 摘要 |
The invention relates to an emergency brake device for additional supporting vehicle load when the tire experiences deflation. The emergency brake device comprises sets of rotatable supporting framework to be fixed on the vehicle chassis. The supporting framework comprises a hydraulic pressure device and a brake treaded pad. When the tire has undergone deflation and/or the vehicle brake system is failure, the hydraulic pressure device is controlled by a hydraulic pressure control device, and friction contact is made between the brake treaded pad and the ground, and the vehicle can be emergency applied the brake, and the supporting framework additional supports vehicle load.
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