Expressway pavement repair device
A technology for road surface repair and expressway, applied in the direction of road repair, roads, roads, etc., can solve the problems of low work efficiency, troublesome rut repair on asphalt pavement, high repair cost, and achieve the effect of improving service life
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[0026] As an embodiment of the present invention, the protrusion of the flower-shaped cam 8 is provided with an arc-shaped shrapnel 81; the arc-shaped shrapnel 81 is made of high-temperature-resistant rubber; When pressing the arc-shaped shrapnel 81, the arc-shaped shrapnel 81 is depressed after being squeezed, and then fits with the round end surface of the perforated steel needle 9, so that the round end surface of the perforated steel needle 9 will not Sliding relative to the surface of the flower-shaped cam 8, the impact force can be transmitted to the transmission shaft 7, preventing the perforating steel needle 9 from bending due to the inclined force, thereby improving the service life of the perforating steel needle 9.
[0027] As an embodiment of the present invention, a No. 1 through hole 811 is set in the middle of the arc-shaped shrapnel 81; a No. 1 cavity 82 is set on the protrusion of the flower-shaped cam 8; during operation, the round head of the punching steel ...
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