Multipurpose compactor and method for operating the multipurpose compactor

• US 8,672,582 B2
• Filed: 04/23/2010
• Issued: 03/18/2014
• Est. Priority Date: 04/23/2009
• Status: Active Grant

• Current Assignee: Bomag GmbH (FAYAT SAS)
• Original Assignee: Bomag GmbH (FAYAT SAS)
• Inventors: Loew, Timo, Hehner, Alexander
• Primary Examiner(s): HARTMANN, GARY S
• Application Number:
  US12/766,466
• Publication Number:
  US 20100272512A1
• Time in Patent Office: 1,425 Days
• Field of Search: 404/84.05, 404/84.1, 404/117, 404/133.05, 404/128, 405/271, 701/2, 340/901
• US Class Current: 404/84.1
• CPC Class Codes: E01C 19/262 pedestrian-controlled, e.g. with safety arrangements for operator
• 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

Abstract

A multipurpose compactor with an automatic safety system is provided. The automatic safety system comprises at least one transmitter and one receiver. The transmitter is coupled mechanically fixed to the multipurpose compactor and/or to a unit movable relative to the multipurpose compactor. The receiver is coupled fixedly to the movable unit and/or the multipurpose compactor.

Claims

1. An automatic safety system comprising:

a multipurpose compactor including at least one transmitter fixedly coupled thereto; and

a movable unit including a transceiver configured to transmit an identification code at a time interval fixedly coupled thereto, wherein the transceiver utilizes radio-frequency identification (RFID) technology to communicate with the at least one transmitter and causes the multipurpose compactor to stop when the identification code is not transmitted;

wherein the at least one transmitter is adapted to emit a spherical propagation of a protective field for a direction independent protection of an operator, and

wherein an identification code fault command is generated which is representative of the fact that the identification code of the movable unit is not transmitted correctly or is not received correctly, whereby a first and a second drive stop command is generated to stop the drives in both drive directions via a second shutdown pathway.

2. The automatic safety system according to claim 1, wherein the movable unit relative to the multipurpose compactor comprises a remote control of the multipurpose compactor.

3. The automatic safety system according to claim 1, wherein the at least one transmitter is coupled to at least one transmitting antenna, and the at least one transmitter and the at least one transmitting antenna emit a protective field that has a predefined radius.

4. The automatic safety system according to claim 3, wherein the at least one transmitter is coupled to two transmitting antennas that are situated in a front or rear area, respectively, of the multipurpose compactor in a main travel direction of the multipurpose compactor.

5. The automatic safety system according to claim 4, wherein at least one the transmitter is provided for each of the two transmitting antennas.

6. The automatic safety system according to claim 3, wherein the transceiver is coupled to a receiving antenna—

that receives the protective field independently of location and/or orientation.

7. The automatic safety system according to claim 1, wherein the automatic safety system is electronically coupled to a control unit of the multipurpose compactor so that a drive of the multipurpose compactor can be shut down as a function of a safety signal of the automatic safety system, or the automatic safety system is directly coupled to the drive of the multipurpose compactor so that the drive of the multipurpose compactor can be shut down directly as a function of the safety signal independently of the control unit.