| 摘要 |
A flat tire emergency truck is comprised of a steel cradle provided with a pair of rear wheels supported on a rear axle and a central swiveling front wheel. The cradle has a bottom wall and opposed spaced parallel side walls to receive a vehicle wheel therein. A pivotal rear ramp is secured to the rear axle and has a first inclined ramp section to permit the vehicle wheel to enter the cradle. The rear ramp also has a second ramp section which is actuable by the load of the vehicle wheel to cause the first plate section to pivot upward to an arresting position. A toggle assembly is secured under the first inclined ramp section and cooperates with the cradle bottom support wall to wedge the rear wheels above a ground support surface when the first inclined ramp section is placed at the loading position. An automatically actuable front gate is secured to the cradle in a forward portion thereof behind the front wheel and is automatically actuable when a vehicle wheel enters the cradle whereby the vehicle wheel is arrested between the front gate and the second plate section which has been automatically positioned to its arresting position.
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