Road paver
A road paver includes: a head; a body including a front end and a tail end; a feeding device, disposed in the front end to convey polyurethane concrete, and the feeding device including a stirring device; a stone paving device, disposed on the tail end to spread crushed stone over a road, and the stone paving device including a stone feed bin carrying the crushed stone; and a concrete paving device, disposed between the feeding device and the stone paving device and connected to the stirring device, and used to spread the polyurethane concrete across the road.
1 . A road paver, comprising:
a head;
a body comprising a front end and a tail end;
a feeding device, disposed in the front end to convey polyurethane concrete, and the feeding device comprising a stirring device;
a stone paving device, disposed on the tail end to spread crushed stone over a road, and the stone paving device comprising a stone feed bin carrying the crushed stone; and
a concrete paving device, disposed between the feeding device and the stone paving device and connected to the stirring device, and used to spread the polyurethane concrete across the road;
wherein:
the feeding device further comprises:
a power system disposed on one side of the head of the road paver to power the feeding device;
a transmission system disposed on one side of the stirring device, and being driven by the power system to convey aggregates of the polyurethane concrete through a convey belt;
a collecting system, being connected to the stirring device and the transmission system and guiding the aggregates from the convey belt of the transmission system to the stirring device; and
the collecting system comprises a first open end and a second open end; the first open end is connected to the transmission system and has a greater width than the convey belt of the transmission system; and the second end is connected to the stirring device and has a smaller width than the stirring device;
the concrete paving device comprises:
a feed hopper, disposed below the stirring device to receive the polyurethane concrete from the stirring device;
a concrete feed bin connected to the feed hopper to hold the polyurethane concrete; and
an unloading hopper disposed below the concrete feed bin; and
when in operation, the polyurethane concrete is laid down on the road via the unloading hopper; the unloading hopper comprises a first side close to the feed hopper and a second side close to the stone paving device; a distance between the first side and the road is less than a distance between the second side and the road.
2 . The road paver of claim 1 , wherein the stirring device comprises:
a housing, connected to the feeding device and used to receive the polyurethane concrete from the feeding device;
a rotating member, disposed in the housing;
at least two helical blades, used to stir and transport the polyurethane concrete; and
a stirring member, disposed between the at least two helical blades to stir the polyurethane concrete; and
the at least two helical blades and the stirring member are connected to the rotating member.
3 . The road paver of claim 1 , wherein the concrete paving device further comprises:
a screed, disposed on a rear end of the concrete paving device to flatten the polyurethane concrete; and
a vibrator, disposed in front of the screed to compact the polyurethane concrete.
4 . The road paver of claim 1 , wherein the concrete paving device further comprises a screw conveyor disposed in the concrete feed bin to spread the polyurethane concrete across the road.
5 . The road paver of claim 1 , wherein the concrete paving device further comprises a road grader used to maintain a stable forward movement of the stone paving device.
6 . The road paver of claim 1 , wherein the stone paving device further comprises:
a running gear, disposed at a bottom portion of the stone paving device to carry the stone paving device to move; and
a speed sensor, disposed on the running gear to measure and adjust an operating speed of the running gear.
7 . The road paver of claim 1 , wherein the stone paving device further comprises:
a stone conveyor, disposed in the stone feed bin to drive small rocks to move;
a paving roller, disposed below the stone conveyor to spread the crushed stone into the polyurethane concrete; and
a driving device, disposed on a frame of the stone paving device and connected to the paving roller to drive the rotation of the paving roller.
8 . The road paver of claim 1 , wherein the feeding device further comprises:
a first measuring member, disposed between the power system and the transmission system to hold the aggregates; and the aggregates are transported into the stirring device through the transmission system; and
a second measuring member, disposed between the first measuring member and the power system and comprising at least two measuring boxes used to hold polyurethane; and a certain amount of polyurethane is poured into the stirring device under control of the at least two measuring boxes.