Screed assembly for a paving machine

• US 10,316,476 B2
• Filed: 04/11/2016
• Issued: 06/11/2019
• Est. Priority Date: 04/11/2016
• Status: Active Grant

• Current Assignee: Caterpillar Paving Products Inc (Caterpillar Incorporated)
• Original Assignee: Caterpillar Paving Products Inc (Caterpillar Incorporated)
• Inventors: Marsolek, John L., Graham, Luke E.
• Primary Examiner(s): Will, Thomas B
• Assistant Examiner(s): Chu, Katherine J
• Application Number:
  US15/095,639
• Publication Number:
  US 20170292232A1
• Time in Patent Office: 1,156 Days
• Field of Search: 404 841, 404118
• CPC Class Codes: E01C 19/23 Rollers therefor; Such rollers usable also for compacting soil E01C19/41, E01C19/43, E01C19/52, E01C23/065 take precedence; specially adapted for agricultural purposes A01B29/00; garden rollers A01G20/35; making or maintaining surfaces of snow or ice E01H4/00; solely for soil compaction E02D3/026
• CPC Class Codes: E01C 19/48 for laying-down the materials and consolidating them, or finishing the surface , e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ E01C19/002, E01C23/065 take precedence; devices for guiding or controlling the machines along a predetermined path E01C19/004
• CPC Class Codes: E01C 19/488 with rollers for consolidating or finishing combined with tamping, vibrating, pressing or smoothing consolidation or finishing means E01C19/4886 takes precedence
• CPC Class Codes: E01C 23/01 Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports form rails E01C19/50; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs E01C23/07 takes precedence; measuring roughness or irregularity in general G01B
• CPC Class Codes: E01C 23/14 for heating or drying foundation, paving, or materials thereon, e.g. paint E01C23/03 takes precedence; heating or drying devices incorporated in the paving E01C11/26; surface soil stabilisation by fusing, calcining or burning soil in situ E01C21/02; for street cleaning E01H1/08; melting snow or ice on surfacing E01H5/10
• CPC Class Codes: E01C 2301/10 Heated screeds

Abstract

A screed assembly for a paving machine is disclosed. The screed assembly includes a screed plate having a front edge, a first plate positioned in front of the front edge of the screed plate. The first plate defining having a first thickness. A temperature sensor is coupled to the first plate. The temperature sensor is configured to determine a temperature of a paving material, whereby the temperature of the paving material is measured before the paving material comes into contact with the screed plate.

Claims

1. A screed assembly for a paving machine comprising:

a screed plate having a front edge;

a first plate positioned in front of the front edge, the first plate having a first thickness;

a second plate disposed between the first plate and the screed plate, the second plate having a second thickness;

a temperature sensor provided within the second plate, the temperature sensor having an end face provided between the screed plate and an angled surface of the first plate and configured to determine a temperature of a paving material, whereby the temperature of the paving material is measured before the paving material comes into contact with the screed plate.

2. The screed assembly of claim 1, wherein the temperature sensor is communicably coupled to a controller, the controller configured to control a temperature of the screed plate based on a temperature data received from the temperature sensor.

3. The screed assembly of claim 1, wherein the temperature sensor is communicably coupled to a controller, the controller configured to control a compactor based on a temperature data received from the temperature sensor.

4. The screed assembly of claim 1, wherein a heat map is generated, by a controller, based on a temperature data received from the temperature sensor.

5. The screed assembly of claim 1, wherein the second plate defines a surface profile, the temperature sensor defining an outer surface profile, the outer surface profile of the temperature sensor substantially flush with the surface profile of the second plate.

6. The screed assembly of claim 1, further comprising:

an extender plate having an edge;

a third plate positioned in front of the edge of the extender plate;

a third plate temperature sensor partly positioned within a third thickness of the third plate; and

a position detector coupled to the third plate.

18. The screed assembly of claim 1, wherein the angled surface of the first plate includes a curved surface.

7. A paving system comprising:

a compactor configured to apply a variable compaction effort to a paving material; and

a paving machine comprising;

a screed plate having a front edge;

a first plate positioned in front of the front edge, the first plate having a first thickness;

a second plate positioned to contact the paving material before the screed plate, the second plate having a second thickness;

a temperature sensor disposed within the first plate and positioned at least partly within the first thickness, the temperature sensor having an angled end face substantially flush with an angled surface of the first plate, the temperature sensor configured to determine a temperature of the paving material, whereby the temperature of the paving material is measured before the paving material comes into contact with the screed plate; and

a controller communicably coupled to the temperature sensor and configured to;

receive a temperature data from the temperature sensor; and

control the variable compaction effort of the compactor based on the temperature data.

8. The paving system of claim 7, wherein the controller further receives a position data associated with the temperature data from a position detector and controls the variable compaction effort based on the position data and the associated temperature data.

9. The paving system of claim 7, wherein the controller is configured to generate a heat map of a ground surface.

10. The paving system of claim 7, wherein the temperature sensor is positioned so as to extend beyond the first thickness of the first plate in a direction away from the angled surface of the first plate.

11. The paving system of claim 7, further comprising:

an extender plate having a front edge;

a third plate in front of an edge of the extender plate; and

a third plate temperature sensor partly positioned within a third thickness of the third plate; and

a position detector coupled to the third plate.

19. The screed assembly of claim 7, wherein the angled surface of the first plate includes a curved surface that extends from a substantially flat front surface of the first plate.

12. A screed assembly for a paving machine comprising:

a screed plate having a front edge;

a first plate positioned in front of the front edge, the first plate forming a nose bar;

a second plate disposed between the first plate and the screed plate, the second plate having a second thickness;

an extender plate having an edge;

a third plate in front of the edge of the extender plate, the third plate having a third thickness;

a first temperature sensor positioned in the second plate to be flush with a bottom surface of the second plate to contact a paving material during use to determine a first temperature of the paving material, whereby the first temperature of the paving material is measured before the paving material comes into contact with the screed plate; and

a second temperature sensor positioned in the third thickness of the third plate, the second temperature sensor configured to determine a second temperature of the paving material before the paving material comes into contact with the extender plate.

13. The screed assembly of claim 12, wherein the first plate is secured to the second plate, and the second plate is secured to the screed plate.

14. The screed assembly of claim 12, wherein the screed plate comprises heating elements, and wherein the heating elements, the first temperature sensor, and the second temperature sensor are communicably coupled to a controller, the controller configured to control a temperature of the heating elements based on a temperature data received from the first temperature sensor and the second temperature sensor.

15. The screed assembly of claim 12, wherein the first temperature sensor and the second temperature sensor are communicably coupled to a controller, the controller configured to control a compactor based on a temperature data received from the first temperature sensor and the second temperature sensor.

16. The screed assembly of claim 12, further comprising a position detector, wherein the first temperature sensor, the second temperature sensor, and the position detector are communicably coupled to a controller, the controller configured to formulate a heat map of a ground surface.

17. The screed assembly of claim 16, wherein the position detector is coupled to the first plate.