Exchangeable milling drum box unit, in particular quick-change milling drum box unit, and ground milling machine comprising a base machine and an exchangeable milling drum box unit

Patent metadata

Field	Value
Publication number	US-12024832-B2
Application number	US-202217714420-A
Country	US
Kind code	B2
Filing date	Apr 6, 2022
Priority date	Apr 6, 2021
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

The present invention relates to a milling drum box unit, in particular a quick-change milling drum box unit, for mounting to a self-propelled base machine to obtain a ground milling machine, the milling drum box unit comprising a part of a fastening device for mounting the milling drum box unit to the base machine, a connection point configured to receive and establish a drive connection to a milling drum rotatable about a rotation axis, on sides of each side wall a lateral shield height-adjustable relative to the side wall, at least two drive energy-consuming consumer elements and/or at least two sensors for detecting an operating parameter.

First claim

What is claimed is:

1. A ground milling machine, comprising:
a base machine with a machine frame, an operator platform, a drive motor and travel units driven by the drive motor;
a milling drum box unit with a milling drum for milling ground material, said milling drum box unit comprising:
an interior configured to accommodate the milling drum and open downward in vertical direction, with a front wall, a rear wall, a top wall and two opposing side walls;
a detachable fastening device with which the milling drum box unit can be detachably fastened to the base machine of the ground milling machine,
a connection point arranged within the interior of the milling drum box unit which is configured to receive and establish a drive connection to the milling drum rotatable about a rotation axis;
a drive energy connection point configured for connection to a drive energy source external to the milling drum box unit, wherein the drive energy connection point is configured as a single plug-in element or a plug-in receiving element;
a complimentary mating counterpart to the single plug-in element or the plug-in receiving element provided on the base machine for establishing a supply connection;
a distributing device or a connection device to a distributing device for hydraulic energy provided on the milling drum box unit, which performs a distribution of hydraulic energy supplied via a common line to at least two hydraulic energy-consuming consumers;
quick coupling devices that automatically cause a line closure when the connection of the drive energy connection point and the drive energy source is released;
a positive and/or non-positive arresting device configured to prevent unintentional disconnection of the single plug-in element or the plug-in receiving element and the complimentary mating counterpart to the single plug-in element or the plug-in receiving element; and
on sides of each side wall, a lateral shield which is height-adjustable relative to the side wall,

wherein the connection point further comprises a mechanical drive gear for driving the milling drum, comprising at least one traction roller for integration into a traction drive for driving the milling drum, and further wherein the distributing device and/or a control unit configured as an electronic module is arranged on the milling drum box unit in a region to be circled by a traction means.

2. The ground milling machine according to claim 1 ,
wherein the distributing device downstream of the drive energy connection point in an energy supply direction further being configured for distributing and allocating drive energy supplied via the drive energy connection point to the at least two hydraulic energy-consuming consumers, and/or
the distributing device has a signal transmission point configured for connection to a signal transmission system external to the milling drum box unit, the control unit being in signal communication with the at least two sensors and a signal connection point, and/or the distributing device has a connector to a CAN bus system of a machine control system of the ground milling machine, wherein signal transmission connections to the at least two sensors originate from this connector.

3. The ground milling machine according to claim 1 ,
wherein the at least two hydraulic energy-consuming consumers consuming hydraulic energy and include at least one of the following features:
the at least two hydraulic energy-consuming consumers are hydraulically actuated linear actuators;
the at least two hydraulic energy-consuming consumers are hydraulically operated motors; and
the at least two hydraulic energy-consuming consumers are configured such that the at least two hydraulic energy-consuming consumers drive an adjusting movement of the lateral shield relative to a side wall and/or of a front flap adjustable relative to the front wall and/or of a stripper flap adjustable relative to the rear wall and/or of a hold-down device relative to the front wall.

4. The ground milling machine according to claim 1 ,
wherein the distributing device includes at least one of the following features:
the distributing device is a distribution device for hydraulic energy and comprises a valve unit with at least two valves controllable between at least two switching positions, one of the valves in each case being assigned to one of the at least two hydraulic energy-consuming consumer elements;
the distributing device is configured as a valve block with at least two valve units;
the distributing device comprises a drive energy supply line and a drive energy discharge line;
the distributing device is arranged outside the milling drum box interior on the milling drum box unit; and
the distributing device comprises all valves required to control hydraulically actuated work functions of the milling drum box unit.

5. The ground milling machine according to claim 1 ,
wherein at least one of the at least two sensors has at least one of the following functions:
the at least one of the at least two sensors is a displacement transducer which monitors an adjusting movement of a linear actuator;
the at least one of the at least two sensors is a pressure sensor that monitors a fluid pressure of a cooling fluid and/or hydraulic fluid;
the at least one of the at least two sensors is a temperature sensor that monitors a temperature of an operating fluid;
the at least one of the at least two sensors is a closing sensor that monitors a flap position and/or a locking position of a locking element;
the at least one of the at least two sensors is an optical sensor; and
the at least one of the at least two sensors is a non-contact distance sensor.

6. The ground milling machine according to claim 1 ,
wherein the control unit fulfills at least one of the following features:
the control unit is in signal communication with the distributing device and controls the distributing device;
the control unit controls all hydraulically driven work functions of the milling drum box unit;
the control unit controls at least one ambient light;
the control unit is connected to a signal transmission point, which is configured for connection to a CAN bus system on a machine side; and
the control unit is configured to receive all sensor data of the milling drum box unit and/or for signal communication via the signal transmission point.

7. The ground milling machine according to claim 1 ,
wherein the drive energy connection point and/or a signal transmission point:
are arranged on the top wall of the milling drum box unit; and/or
are arranged on a side wall of the milling drum box unit.

8. The ground milling machine according to claim 1 ,
wherein the milling drum box unit comprises a connection device for connection to an on-board electrical system of the base machine, for supplying one or more ambient lights of the milling drum box unit.

9. The milling drum box unit according to claim 8 ,
wherein the milling drum box unit has a housing part for enclosing the traction roller, comprising a removable, or pivotable side flap.

10. The ground milling machine according to claim 1 ,
wherein the distributing device or the connection device to the distributing device is provided on the milling drum box unit, which also performs distribution of electrical energy and/or incoming control signals.

Assignees

• Bomag Gmbh

Inventors

• Thelen Thomas

Classifications

• E01C23/127

  rotary, e.g. rotary hammers · CPC title

• E01C23/088 Primary

  Rotary tools, e.g. milling drums {(for forming recesses to receive marking materials E01C23/0946)} · CPC title