Hydraulic pushing device

摘要

A hydraulic pushing device, including: a hydraulic unit, a rear seat, a front seat, a prying mechanism, an automatic adjustment mechanism, and a zero-torque pushing mechanism. The hydraulic unit and the rear seat are disposed on a platform. The zero-torque pushing mechanism includes two hydraulic cylinders, one end of each of the two hydraulic cylinders is hinged to the rear seat via a third hinge pin, and the other end of each of the two hydraulic cylinders is hinged to the front seat via a second hinge pin. The automatic adjustment mechanism includes a control lever and two locating pieces. One end of the control lever is in a fixed connection to the front seat, and the other end of the control lever is clamped by the two locating pieces. The prying mechanism includes two pawls, a pawl shaft, two prying guides, and two rows of equidistantly-disposed stop pieces.

主权项

1. A hydraulic pushing device, the hydraulic pushing device moving on a lower slide rail to push an upper slide plate disposed on the lower slide rail to shift, the hydraulic pushing device comprising:
1) a hydraulic unit; 2) a rear seat; 3) a front seat; 4) a prying mechanism; 5) an automatic adjustment mechanism; and 6) a zero-torque pushing mechanism;wherein
the hydraulic unit and the rear seat are disposed on a platform; the front seat is in a fixed connection to the upper slide plate via a connecting flange; the zero-torque pushing mechanism comprises two hydraulic cylinders, one end of each of the two hydraulic cylinders is hinged to the rear seat via a third hinge pin, and the other end of each of the two hydraulic cylinders is hinged to the front seat via a second hinge pin; the automatic adjustment mechanism comprises a control lever and two locating pieces, one end of the control lever is in a fixed connection to the front seat, and the other end of the control lever is clamped by the two locating pieces which are fixed on the rear seat; the prying mechanism comprises two pawls, a pawl shaft, two prying guides, and two rows of equidistantly-disposed stop pieces; the pawl shaft is disposed between a baffle plate and a front round block leaning against the rear seat; the two pawls are interlocked with two ends of the pawl shaft, respectively; a middle part of each pawl is hinged to the prying guide straddling the stop pieces via a first hinge pin; when the hydraulic cylinders lift, the pawls grasp the stop pieces tightly, and the hydraulic cylinders push the upper slide plate to move forward; and when the hydraulic cylinders contract, the platform moves forward, under the drive of the pawl shaft, the pawls and the prying guide lean against the stop pieces and move forward until the pawls grasp next stop pieces for next cycle of pushing.