Process control for a paving operation is facilitated by obtaining paving material conveyance information for a time period during which paving material is delivered to a screed of a paver by a material conveyance system and distributed over a surface to be paved. The paving material conveyance information includes data indicating incremental advance of the paving material to the screed of the paver during the period of time and data indicating incremental quantity of the paving material at one or more points of the material conveyance system, both of which are correlated to points in time during the time period at which the data is acquired. Incremental quantity of paving material delivered to the screed is determined to facilitate process control in the paving operation.

Integrated paving process control for a paving operation

The invention discloses a method and a system for monitoring paving thickness of a high-level highway pavement in real time, belonging to the field of road construction quality control The method comprises the following steps: erecting an automatic tracking total station nearby a paving site, determining the position of an erection point through a resection survey method according to the known point coordinate, positioning and tracking a 360-degree prism according to enough short time interval by utilizing the automatic tracking total station, measuring the inclination angles of a transverse beam and a longitudinal beam of a platform trolley in the device by adopting an inclinometer, and measuring the distance from the transverse beam to the paved pavement by adopting a laser distance measuring sensor arranged on the transverse beam; calculating three-dimensional coordinates (x, y, z) of the position points of the paved pavement measured by each laser distance measuring sensor according to a spatial geometrical relation between each laser distance measuring sensor and the prism; projecting to obtain elevation z0 of the position point on a datum plane before paving; solving the difference between elevations z and elevation z0 to obtain the paving thickness; and judging whether the paving thickness at the position point accords with the control standard, otherwise, transmitting alarm information The method is mainly applied to road construction quality control

Method and system for monitoring paving thickness of high-level highway pavement in real time

In a method for laying down a pavement consisting of paving material with a screed of a road paver, in which a compaction unit, particularly a tamper, pre-compacts the paving material at cyclical work cycles with selectable stroke and selectable frequency while the pavement having a selectable pavement thickness) is in the process of being laid down at a selectable paving speed, at least the stroke is automatically adjustable in response to paving parameters, such as at least the paving speed and/or the pavement thickness, along a characteristic curve or in a characteristic map. In the screed the compaction unit comprises an adjusting mechanism which is operable during the ongoing paving work for adjusting the stroke of the compaction unit.

Method for laying down a pavement, a screed and a road paver

Method for laying down a pavement with a road paver, in which machine parameters are coordinated at least with paving requirements of the pavement by means of a controller and in which at least one machine parameter set is created and stored in advance for a paving requirement determined before the paving, the parameter set allowing a high level of machine efficiency and pavement quality to be expected and/or has already produced the same for an at least similar earlier paving requirement of an already laid down pavement, and the pavement on the basis of the parameter set created in advance. The road paver has a controller with an on-board computer connected to a sensor system and an actuating system, and includes memories and a retrieval and/or comparison section for triggering the actuating system for implementing the machine parameters of the parameter set created in advance.

Method and road paver for laying down a pavement

The invention discloses a road asphalt laying device for municipal use. The road asphalt laying device comprises a traction bracket, a bottom plate, a dust suction device, a stirring cavity, a cylinder body, a trowelling plate, a vibrating tamper and a ramming wheel, wherein the dust suction device is arranged on the bottom plate; the cylinder body is arranged at the right side of the dust suctiondevice; the stirring cavity is formed in the upper end of the cylinder body; a feed hopper is mounted at the upper end of the stirring cavity; a first motor is arranged at the right side of the feedhopper; the output end of the first motor is fixedly connected with a first rotating shaft; the lower end of the stirring cavity is connected with and communicates with the cylinder body through a liquid guide pipe; the lower end of a rotating shaft is fixedly connected with a blade; a refrigerating device is arranged at the lower end of the blade; the left side of the cylinder body is connected with a discharge pipe; the vibrating tamper is also arranged at the lower end of the bottom plate; a trowelling wheel and the ramming wheel are mounted at the lower end of an upright rod of an L-shapedrod. The road asphalt laying device disclosed by the invention has dust removal and cooling functions, is high in working efficiency and good in laying effect, can meet laying requirements of different thicknesses, and has a wide range of application.

Road asphalt laying device for municipal use

The invention relates to a self-propelling machine for processing bituminous or concrete pavement material, in particular a road finisher or a feeder. The machine comprises an internal combustion engine as a primary drive source, a controller for the engine, said controller receiving control signals, at least one additional drive unit for functional and operational components of the machine as well as at least one hydraulic circuit comprising a hydraulic medium reservoir. The invention is characterized in that the controller is configured for automatically causing starting and/or stopping of the engine in response to receipt of at least one specific control signal.

Road finisher with automatic engine controller

A method and a system for applying a road surface using a mixing plant for producing laying material, a road finishing machine processing the laying material to a road surface, and a supply chain transporting the laying material from the mixing plant to the road finishing machine. Request commands are transmitted from the road finishing machine to the mixing plant and/or to the supply chain, and, depending on these request commands, the production rate of the laying material in the mixing plant, the temperature of the laying material produced in the mixing plant, and/or the mass flow of laying material supplied to the road finishing machine per time unit by means of the supply chain are adjusted.

Method and system for applying a road surface

In a screed with a basic screed and at least one extendable screed movable relative to the basic screed with a hydraulic cylinder and an electro-hydraulic control comprising a magnet-actuated directional control valve for at least controlling the direction of the hydraulic cylinder, the directional control valve for changing the rate of motion of the hydraulic cylinder is guided by an operator or automatically and is a proportional directional control valve (W) with proportional-electric direct actuation or proportional-electric-hydraulic pilot control The proportional directional control valve for the hydraulic cylinder is connected on the actuation side with an electro-hydraulic control of a hydraulic system of the road finishing machine

Achim Eul

Papers

Method for laying down a pavement, a screed and a road paver

Road finisher with automatic engine controller

Method and road paver for laying down a pavement

Method and system for applying a road surface

Screed for road finishing machine