Self-propelled construction device, in particular a soil compactor

• US 9,822,736 B2
• Filed: 03/07/2012
• Issued: 11/21/2017
• Est. Priority Date: 03/09/2011
• Status: Active Grant

• Current Assignee: Hamm AG (Deere & Company)
• Original Assignee: Hamm AG (Deere & Company)
• Inventors: Roehr, Andreas, Bletscher, Thomas, Zimmerer, Michael
• Primary Examiner(s): Matthias, Jonathan
• Application Number:
  US13/983,128
• Publication Number:
  US 20130305717A1
• Time in Patent Office: 2,085 Days
• CPC Class Codes: E01C 19/26 self-propelled or fitted to road vehicles E01C19/231, E01C19/235 , E01C19/27 - E01C19/29 take precedence
• CPC Class Codes: E01C 19/282 self-propelled, e.g. with an own traction-unit E01C19/285 - E01C19/288 take precedence
• CPC Class Codes: E02D 3/02 Improving by compacting E02D3/11 takes precedence; compacting soil locally before or while forming foundations E02D27/26, E02D27/28
• CPC Class Codes: E02D 3/026 by rolling with rollers usable only for or specially adapted for soil compaction, e.g. sheepsfoot rollers rollers for soil working in agriculture A01B29/00; rollers for road paving, such rollers usable also for compacting soil E01C19/23
• CPC Class Codes: E02D 3/032 Trench rollers
• CPC Class Codes: E02D 3/046 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 Class Codes: F01P 2003/182 with multiple heat-exchangers
• CPC Class Codes: F01P 2005/025 using two or more air pumps
• CPC Class Codes: F01P 2060/02 Intercooler
• CPC Class Codes: F01P 5/02 Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
• CPC Class Codes: F02B 29/0456 Air cooled heat exchangers
• CPC Class Codes: F02B 29/0475 the intake air cooler being combined with another device, e.g. heater, valve, compressor, filter or EGR cooler, or being assembled on a special engine location
• CPC Class Codes: F02M 26/13 Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A self-propelled construction device, in particular a soil compactor, includes a turbocharged diesel engine with a first radiator arrangement for cooling charge air and a second radiator arrangement for cooling a cooling liquid and/or hydraulic oil, with a first radiator fan being allocated to the first radiator arrangement and a second radiator fan being allocated to the second radiator arrangement and the first radiator fan and the second radiator fan being able to be operated essentially independently from each other.

Claims

1. A self-propelled construction device comprising:

a turbocharged diesel engine with a first radiator arrangement to cool charge air and a second radiator arrangement to cool coolant and/or hydraulic oil, with a first radiator fan being allocated to the first radiator arrangement and a second radiator fan being allocated to the second radiator arrangement and the first radiator fan and the second radiator fan being able to be operated independently from each other;

wherein the first radiator arrangement and the second radiator arrangement are arranged at a secondary energy take-off side of the diesel engine;

wherein the first radiator arrangement is arranged such that a radiator level thereof is oriented vertically for obtaining a horizontal flow of cooling air; and

wherein the second radiator arrangement, starting from its area near the first radiator arrangement, extends diagonally downward and in the direction away from the secondary energy take-off side of the diesel engine, such that a radiator level thereof extends diagonally in reference to a vertical line.

2. The self-propelled construction device according to claim 1, wherein the first radiator fan can be driven by a secondary energy take-off of the diesel engine.

3. The self-propelled construction device according to claim 2, wherein a clutch arrangement is allocated to the first radiator fan to adjust the flow rate.

4. The self-propelled construction device according to claim 3, wherein the clutch arrangement comprises a visco-clutch.

5. The self-propelled construction device according to claim 1, wherein a fan drive unit is allocated to the second radiator fan.

6. The self-propelled construction device according to claim 5, wherein the fan drive unit comprises a hydraulic engine.

7. The self-propelled construction device according to claim 1, wherein the second radiator arrangement is inclined in reference to a vertical line and cooling air can flow through it in the cooling mode from the bottom to the top.

8. The self-propelled construction device according to claim 1, wherein the second radiator arrangement is provided in the vertical direction underneath the first radiator arrangement.

9. The self-propelled construction device according to claim 1, wherein the first radiator arrangement and the second radiator arrangement are combined to a preassembly, fixed at the diesel engine.

10. The self-propelled construction device according to claim 9, wherein the preassembly further comprises one or more of:

an air-conditioning condenser;

an exhaust gas treatment unit; and

the second radiator fan.

11. The self-propelled construction device according to claim 9, wherein the diesel engine is fixed with the pre-assembly fastened thereat as one unit at a construction device frame.