Tool for installing a bit on and/or deinstalling a bit from a bit holder system of a milling machine

Patent metadata

Field	Value
Publication number	US-11433520-B2
Application number	US-202017128684-A
Country	US
Kind code	B2
Filing date	Dec 21, 2020
Priority date	Dec 20, 2017
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

The invention relates to a tool for installing a bit on and/or deinstalling a bit from a bit holder system of a milling machine, in particular a road milling machine, having at least one initiator with which installation and/or deinstallation of a bit is initiated. Provision is made that the tool comprises a detection device having at least one counting device; and that the detection device is designed to detect a number of bits deinstalled using the tool and/or a number of bits installed using the tool. The invention also relates to a corresponding bit holder system and to a method for monitoring wear. With the tool and the bit holder system, additional information regarding bit changes that have been carried out is made available to a user.

First claim

What is claimed is:

1. A bit holder system for a milling machine, the bit holder system comprising:
a bit holder coupled to a milling drum of the milling machine, the bit holder comprising at least one bit receptacle for detachable fastening of at least one bit thereon;
wherein at least one noncontact machine-readable data medium is arranged as an identifier on or in the bit holder;
the noncontact machine-readable data medium contains information corresponding to a position of the bit holder on the milling drum; and
a detection device is configured to read out the information corresponding to the position of the bit holder on the milling drum at least in association with installing or deinstalling of a bit thereon,
wherein the position of the at least first bit holder on the milling drum is determined based on the information and the installed or deinstalled bit is correlated with the determined position.

2. The bit holder system of claim 1 , wherein the noncontact machine-readable data medium is arranged in a region of the bit holder system which is protected from abrasion.

3. The bit holder system of claim 1 , wherein the noncontact machine-readable data medium is an electronic data medium.

4. The bit holder system of claim 3 , wherein the electronic data medium is an active or passive RFID transponder.

5. The bit holder system of claim 1 , wherein the position of the bit holder comprises a coordinate proceeding in an axial direction of the milling drum and/or a coordinate proceeding in a circumferential direction of the milling drum.

6. The bit holder system of claim 1 , wherein the noncontact machine-readable data medium contains information corresponding to a point in time at which a bit held in the bit holder system was installed.

7. The bit holder system of claim 1 , wherein the bit holder system comprises a base carrier connected fixedly to the milling drum and a replaceable bit holder detachably connected to the base carrier, and at least one noncontact machine-readable data medium is arranged on or in the base carrier and/or on or in the replaceable bit holder.

8. A method for monitoring a status of replaceable bits and/or bit holders on bit holder systems of a milling drum of a milling machine, the method comprising:
reading out, in noncontact fashion via a detection device, a machine-readable data medium arranged as an identifier on or in at least a first bit holder, wherein the machine-readable data medium contains information corresponding to a position of the at least first bit holder on the milling drum;
determining the position of the at least first bit holder on the milling drum based on the information associated with the machine-readable data medium;
comparing the data read out from the identifier with data stored in the detection device for the position on the milling drum; and
detecting that a replaceable bit at that position has been changed.

9. The method of claim 8 , wherein the position of the at least first bit holder on the milling drum is determined by the detection device.

10. The method of claim 8 , further comprising:
transferring the information associated with the machine-readable medium and read out by the detection device to a control unit via an interface between the detection device and the control unit,
wherein the position of the at least first bit holder on the milling drum is determined by the control unit.

11. The method of claim 8 , wherein the detection device comprises an RFID reading device and the machine-readable data medium is an active or passive RFID transponder.

12. The method of claim 8 , further comprising determining, based on the information associated with the machine-readable data medium, a point in time at which a bit held in the at least first bit holder was installed.

13. The method of claim 12 , further comprising storing information read out from the machine-readable data medium, and/or points in time at which the machine-readable data medium was read out, in a memory associated with the detection device.

14. The method of claim 8 , further comprising transferring data to the identifier of the at least first bit holder via an interface associated with the detection device, wherein the transferred data corresponds to a point in time at which a bit was installed on at least first bit holder.

15. A method for monitoring a status of replaceable bits and/or bit holders on bit holder systems of a milling drum of a milling machine, the method comprising:
reading out, in noncontact fashion via a detection device, a machine-readable data medium arranged as an identifier on or in at least a first bit holder, wherein the machine-readable data medium contains information corresponding to a position of the at least first bit holder on the milling drum;
determining the position of the at least first bit holder on the milling drum based on the information associated with the machine-readable data medium; and
deinstalling the bits from the bit holder system with the aid of a tool comprising the detection device, and/or installing the bit on the bit holder system with the aid of the tool;
wherein the position of the at least first bit holder on the milling drum is determined based on the information associated with the machine-readable data medium and the installed or deinstalled bit is correlated with the determined position.

16. The method of claim 15 , wherein the position of the at least first bit holder on the milling drum is determined by the detection device.

17. The method of claim 15 , further comprising:
transferring the information associated with the machine-readable medium and read out by the detection device to a control unit via an interface between the detection device and the control unit,
wherein the position of the at least first bit holder on the milling drum is determined by the control unit.

18. The method of claim 15 , further comprising determining, based on the information associated with the machine-readable data medium, a point in time at which a bit held in the at least first bit holder was installed.

19. The method of claim 18 , further comprising storing information read out from the machine-readable data medium, and/or points in time at which the machine-readable data medium was read out, in a memory associated with the detection device.

20. The method of claim 15 , further comprising transferring data to the identifier of the at least first bit holder via an interface associated with the detection device, wherein the transferred data corresponds to a point in time at which a bit was installed on at least first bit holder.

Assignees

• Wirtgen Gmbh

Inventors

• Berning Christian
• Brück Matthias
• Schwalbach Lothar
• Barimani Cyrus

Classifications

• B25B23/14 Primary

  Arrangement of torque limiters or torque indicators in wrenches or screwdrivers (couplings for transmitting rotation or clutches F16D; devices for measuring torque per se G01L) · CPC title

• E21C35/18

  Mining picks; Holders therefor (planing knives E21C27/44) · CPC title

• E21C35/19

  Means for fixing picks or holders · CPC title

• G07C5/085

  using electronic data carriers · CPC title

• B25B27/04

  inserting or withdrawing keys · CPC title