Forward-extending platform capable of adjusting distance to cab ceiling automatically

Abstract

A forward-extending platform capable of adjusting the distance to a cab ceiling automatically comprises a motor tractor, a chassis, a vehicle body and a hydraulic station. The motor tractor is hinged to the chassis, the vehicle body is fixedly connected with the chassis, and two hollow columns are fixedly connected with two sides of the front end of the vehicle body symmetrically. The forward-extending platform is characterized by further comprising a distance remote sensor, a lifting execution unit, the forward-extending platform, a lifting control unit and a protection pull rod. The distance remote sensor is fixedly connected on the cab ceiling, and two ends of the lifting execution unit are fixedly connected with two sides of the front end of the vehicle body. When the forward-extending platform does not work, the forward-extending platform is vertically arranged at the front end of the vehicle body and hinged to the bottom of a sliding block of the lifting execution unit. During work, the forward-extending platform is turned and unfolded to reach the horizontal position and arranged above a cab. The output end of the lifting control unit is fixedly connected with the lifting execution unit and the forward-extending platform, the input end of the lifting control unit is electrically connected with the distance remote sensor, one end of the protection pull rod is hinged to the forward-extending platform, and the other end of the protection pull rod is hinged to the sliding block.

Description

technical field [0001] The invention relates to a vehicle transport semi-trailer. It is a front platform that can automatically adjust the distance from the cab roof for the vehicle transport semi-trailer. Background technique [0002] At present, domestic vehicle transport semi-trailers are designed to load passenger cars behind the rear wall of the cab. One of the reasons is that there is both horizontal rotation and longitudinal relative rotation between the tractor and the semi-trailer, especially when going up and down a ferry or going up and down a steep slope, the relative movement is greater, such as a steep slope with a slope exceeding 8°. In working conditions, danger is very likely to occur. Another reason is that the front platform of the prior art is fixed on the carriage, and the distance between the front platform and the cab roof is a fixed value H. If the H value is reserved for a small value, The cab and the front platform are likely to collide when the c...

AI Technical Summary

Problems solved by technology

One of the reasons is that there is both horizontal rotation and longitudinal relative rotation between the tractor and the semi-trailer, especially when going up and down a ferry or going up and down a steep slope, the relative movement is greater, such as a steep slope with a slope exceeding 8°. In working conditions, danger is very likely to occur. Another reason is that the front platform of the prior art is fixed on the carriage, and the distance between the front platform and the cab roof is a fixed value H. If the H value is reserved for a small value, The cab and the front platform are likely to collide when the car is climbing. If the H value is large, although the collision cannot occur when climbing, the car is super high when driving on flat roads.

Images