45results about How to "Change height position" patented technology

The utility model discloses an asphalt pavement crack sealing machine, relates to the technical field of crack sealing machines, and solves the technical problem that a discharge pipe is easy to deform and deviate when an asphalt spray gun moves in a rugged place in the use process. Comprising an asphalt tank, a discharging pipe is arranged on the right side of the asphalt tank, and an asphalt spray head is connected below the right end of the discharging pipe; the telescopic adjusting mechanism is mounted between the discharging pipe and the asphalt spray head, the telescopic adjusting mechanism comprises mounting circular plates which are respectively arranged on the discharging pipe and the asphalt spray head in a sleeving manner, a metal telescopic pipe is arranged between the two mounting circular plates, and a lower pressing plate is arranged on the asphalt spray head in a sleeving manner; through the designed telescopic adjusting mechanism, on the premise that normal discharging of asphalt melt materials is not affected, automatic telescopic and angle adjustment can be conducted on a rugged road surface, the angle and the height position of the asphalt spray head are changed, even if the rugged road surface is met, deformation and deviation cannot occur, and it is guaranteed that asphalt is stably poured into cracks through the asphalt spray head.