RU105307U1 - ASPHALT AUTOMATIC CONTROL SYSTEM - Google Patents

Abstract

 An automatic control system for an asphalt paver, comprising an angle sensor having an error indicator and stabilizer angle adjuster switches, a height sensor with an error indicator, a strain gauge force transducer in the tamper metal structure, a control unit, discrete hydraulic drives, characterized in that it further comprises a temperature sensor in the storage hopper, automatically controlling the temperature of the asphalt mix and changing the flow of asphalt concrete mixture for the compacting working body of the paver.

Description

The invention relates to a technique for laying pavement and automatic control of the compaction of pavement.

A known automatic control system for the position of the screed plate, containing an angle sensor, a height sensor, a control unit and hydraulic actuators, a capacitive sensor is used in the height sensor, and the controls are located on the sensors (utility model of the Russian Federation No. 6567, priority date 21.05. 1997, publication date 05.16.1998, authors: Bezzub A.I. et al., RU, prototype).

A disadvantage of the known system is its low efficiency, since the limits of automatic control of the paver are limited, and the system is not adapted to control the temperature of the stacked layer and change the operating modes of the paver.

As a prototype, an automatic control system for an asphalt paver working body was adopted, which contains an angle sensor, a height sensor, a strain gauge transducer (sensor), a control unit and hydraulic drives (utility model of the Russian Federation No. 95688, priority date 02.24.2010, publication date 10.07.2010, Authors: Klimov A.S. et al., RU, prototype).

The disadvantage of the prototype is the low efficiency of the automatic control system, due to the fact that when compacting the asphalt mix the operator-operator has to perform a large number of operations to ensure high-quality pavement, in addition, the system is not adapted to use the temperature sensor in the storage hopper to control the temperature of the asphalt mix and changes in the supply of asphalt mix for the compacting working body of the paver, which leads to a long Processes sealing of pavement and poor performance of road construction works.

The objective of the utility model is to increase the efficiency of automatic control of the paver due to the use of a temperature sensor in the storage hopper, which provides temperature control of the asphalt concrete mix and changes the flow of the asphalt mix for the compacting working body of the paver without directly participating in the control of the compaction process of the operator-operator, as well as increasing productivity and efficiency road construction works.

To solve this problem, an automatic paver control system containing an angle sensor, having an error indicator and stabilizer angle adjuster switches, a height sensor with an error indicator, a strain gauge force transducer in the tamper metal structure, a control unit, discrete hydraulic drives, according to a utility model, is additionally contains a temperature sensor in the storage hopper that automatically controls the temperature of the asphalt concrete and changing the impurity supplying asphalt mixture for sealing the working body paver.

The drawing shows a functional arrangement of the blocks of the automatic control system of the paver.

The automatic control system of the paver is installed on the paver with tamper bars and contains an angle sensor 1, which has an error indicator and stabilizer angle adjuster switches, a height sensor 2 with an error indicator, strain gauge transducer (sensor) 3, temperature sensor 4, control unit 5 and discrete hydraulic drives 6. Angular position sensor 1 generates an error signal proportional to the deviation of the working body of the paver from gravity vertical. The error signal comes from the output of the angle sensor 1 to the first input of the control unit 5. The high-altitude sensor 2 generates an error signal proportional to the deviation of the working body from the position specified by the copier. The error signal comes from the output of the altitude position sensor 2 to the second input of the control unit 5. The strain gauge (sensor) 3 generates a signal proportional to the force in the metal structure of the tamper, which comes from the output of the strain gauge (sensor) 3 to the third input of the control unit 5. Sensor temperature 4 generates an error signal proportional to the deviation of the temperature of the asphalt mixture from the specified optimal values. An error signal is received from the output of the temperature sensor 4 to the fourth input of the control unit 5. The control unit 5 generates control signals for the discrete hydraulic actuators 6 to reduce the current errors to zero. The duration and frequency of the control signals depends on the magnitude of the error.

The advantage of the proposed technical solution is to increase the efficiency of the automatic control of the paver due to the continuous compaction process, by using a temperature sensor in the storage hopper, which controls the temperature of the asphalt mix and changes the flow of the asphalt mix for the compacting working body of the paver without directly participating in the control of the compaction process of the operator-operator , which generally indicates an increase in production the effectiveness and efficiency of road construction works.

Claims (1)

An automatic control system for an asphalt paver, comprising an angle sensor having an error indicator and stabilizer angle adjuster switches, a height sensor with an error indicator, a strain gauge force transducer in the tamper metal structure, a control unit, discrete hydraulic drives, characterized in that it further comprises a temperature sensor in the storage hopper, automatically controlling the temperature of the asphalt mix and changing the flow of asphalt concrete mixture for the compacting working body of the paver.