Rotary type locking device for springboard type tail door

Abstract

The invention discloses a rotary type locking device for a springboard type tail door, relating to the field of locking devices. The rotary type locking device comprises a locking support and diagonalwedge blocks arranged at two sides of a vehicle tail door plate, wherein the diagonal wedge blocks are arranged on the outer upper part of a vehicle; each diagonal wedge block has a thin upper end and a thick lower end; the two diagonal wedge blocks are matched with each other and provided with spring bolts; each spring bolt has a thick upper end and a thin lower end; a first mounting hole and asecond mounting hole are respectively formed in one end and middle part of each spring bolt; a first pin shaft and a second pin shaft are asymmetrically arranged at the two ends of the locking support; the spring bolt is arranged on the first pin shaft through the second mounting hole; a power actuator is arranged on the second pin shaft; and the spring bolts are hinged with the power actuators through the first mounting holes. The rotary type locking device is used for locking through double wedge surfaces, is automatically controlled and can improve the locking reliability and sealing reliability of the springboard type tail door.

Description

technical field [0001] The invention relates to the field of locking devices, in particular to a rotary locking device for a springboard type tailgate. Background technique [0002] The springboard tailgate is generally flipped downwards, and the hinge point of the flip is located at the bottom of the special vehicle, which is tightened by control actuators (such as oil cylinders and chains). Due to space constraints, the control actuators are often close to the hinge point, resulting in a small force arm and tight tension. The effect is not good, the tailgate is prone to top gaps, the overall seal is not tight, and the reliability of tensioning is poor. Contents of the invention [0003] The object of the present invention is to solve the above problems and provide a rotary locking device for a springboard tailgate, which locks through double wedge surfaces and adopts automatic control, which can improve the locking reliability and sealing reliability of the springboard t...

AI Technical Summary

Problems solved by technology

[0002] The springboard tailgate is generally flipped downwards, and the hinge point of the flip is located at the bottom of the special vehicle, which is tightened by control actuators (such as oil cylinders and chains). Due to space constraints, the control actuators are often close to the hinge point, resulting in a small force arm and tight tension. The effect is not good, the tailgate is prone to top gaps, the overall seal is not tight, and the reliability of tensioning is poor, etc.

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