Compactor

Patent metadata

Field	Value
Publication number	US-11280054-B2
Application number	US-202017000923-A
Country	US
Kind code	B2
Filing date	Aug 24, 2020
Priority date	Aug 26, 2019
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

A compactor includes a compactor structure and at least one roller unit rotatably supported on the compactor structure about a roller axis of rotation. A roller heater is deployed in assignment with at least one roller unit. The roller heater is a liquid fuel-operated heating device with a burner region, a fuel pump for supplying liquid fuel from a fuel tank to the burner region and a combustion air blower for supplying combustion air to the burner region.

First claim

The invention claimed is:

1. A compactor, comprising a compactor structure and at least one roller unit rotatably supported on the compactor structure about a roller axis of rotation, wherein a roller heater is deployed in assignment with at least one roller unit, wherein the roller heater is a liquid fuel-operated heating device with a burner region, a fuel pump for supplying liquid fuel from a fuel tank to the burner region and a combustion air blower for supplying combustion air to the burner region, the roller heater further comprising a heating element absorbing combustion exhaust gas expelled from the burner region and emitting heat in the direction of the roller unit, an exhaust gas flow volume being formed in the heating element with a combustion exhaust gas inlet region for receiving combustion exhaust gas expelled from the burner region and a combustion exhaust gas outlet region for expelling exhaust gas to the outside, the exhaust gas flow volume comprising a flow channel running at least in regions in a meandering manner between the combustion exhaust gas inlet region and the combustion exhaust gas outlet region, the heating element comprising a heat emission surface positioned facing the assigned roller unit and provided at least partially on a heat transfer wall of the heating element limiting the exhaust gas flow volume.

2. The compactor according to claim 1 , wherein a flow of combustion exhaust gas leaving the exhaust gas flow volume is substantially not directed towards the assigned roller unit.

3. The compactor according to claim 1 , wherein the exhaust gas flow volume is delimited on at least one side facing away from the assigned roller unit by an insulation wall of the heating element.

4. The compactor according to claim 1 , wherein at least one roller unit comprises a plurality of rubber wheels which can be rotated about the roller axis of rotation of this roller unit, wherein the roller unit comprising a plurality of rubber wheels is assigned a roller heater, or/and that at least one roller unit comprises a metal jacket, wherein the roller unit comprising a metal jacket is assigned a roller heater.

5. The compactor according to claim 1 , wherein at least one roller heater is disposed on a side of the assigned roller unit facing away from the compactor structure in a longitudinal direction of the compactor.

6. The compactor according to claim 1 , wherein in assignment with at least one roller unit, a temperature detection arrangement for detecting a temperature in the region of a roller surface is deployed, and in that the heating device of the roller heater assigned to this roller unit can be operated on the basis of a roller surface temperature detected by the temperature detection arrangement.

7. The compactor according to claim 1 , wherein at least one overheating sensor is deployed, wherein if a temperature detected by the at least one overheating sensor exceeds an assigned temperature threshold, at least one roller heater deployed in assignment with a roller unit can be deactivated.

8. The compactor according to claim 1 , wherein the flow channel comprises a plurality of adjacent parallel-running channel sections, wherein an exhaust gas flow direction of each one of the channel sections is opposite to the exhaust gas flow direction in an adjacent one of the flow channel portions.

9. The compactor according to claim 8 , wherein a flow cross section of flow channel sections following each other in the exhaust gas flow direction decreases.

10. The compactor according to claim 1 , wherein a drive assembly is deployed on the compactor structure.

11. The compactor according to claim 10 , wherein the drive assembly is designed as an internal combustion engine, and in that the drive assembly and the heating device of the at least one roller heater are fed from the same fuel tank.

12. The compactor according to claim 10 , wherein the drive assembly is designed as an internal combustion engine, and wherein the heating element is arranged for receiving exhaust gas emitted by the drive assembly for the flow of the exhaust gas emitted by the drive assembly through the flow channel.

Assignees

• Hamm Ag

Inventors

• Mahler Gerhard
• Kreger Marco
• Greger Stefan
• Gradl Thomas

Classifications

• E02D3/046 Primary

  by tamping or vibrating, e.g. with auxiliary watering of the soil (E02D3/026, E02D3/08 take precedence; generating or transmitting mechanical vibrations for performing mechanical work in general B06B; tamping or vibrating apparatus for working ballast or railways E01B27/00, for consolidating paving materials E01C19/30, for consolidating concrete in general E04G21/06) · CPC title

• E01C19/238 Primary

  Wetting, cleaning or heating rolling elements, e.g. oiling, wiping, scraping · CPC title

• E01C19/286

  Vibration or impact-imparting means; Arrangement, mounting or adjustment thereof; Construction or mounting of the rolling elements, transmission or drive thereto, e.g. to vibrator mounted inside the roll (E01C19/287 and E01C19/288 take precedence) · CPC title

• E01C19/236

  Construction of the rolling elements, e.g. surface configuration, rolling surface formed by endless track · CPC title

• E01C19/235

  Rolling apparatus designed to roll following a path other than essentially linear, e.g. epicycloidal · CPC title