Patent ID: 11958557
Assignee: BOMAG GMBH
Field: Transport (Mechanical engineering)
Classification: CPC B  F | IPC B

Claim 0:
1. A construction machine comprising:
an engine;
a machine frame;
a pair of front wheels with at least one right-side front wheel and at least one left-side front wheel in the forward direction of the construction machine, each front wheel being steerable about a separate vertical steering axis;
a steering structure connected to the front wheels for driving and coordinating the steering movement of the front wheels about the vertical steering axes, the steering structure comprising:
a steering actuator mounted on the machine frame and comprising a driven control member that is linearly moveable in a horizontal plane and perpendicular to the forward direction along an adjustment axis in relation to the machine frame, the driven control member comprising link elements at each end on its right and left side with regard to the forward direction of the construction machine, wherein:
the link elements are part of link joints of steering linkages in functional connection with the front wheels for steering purposes;
the link elements of the control member are rigidly connected with each other by a connecting/fastening element that is independent from the control member;
the connecting/fastening element is part of an anti-rotation structure that inhibits a rotational movement of the link elements about the adjustment axis in relation to each other and to the machine frame and thus fixates the rotational position of the link elements about the adjustment axis in relation to the machine frame and to each other;

wherein the right-side front wheel and the left-side front wheel are each part of a tandem axle arrangement, each tandem axle arrangement comprising a tandem axle frame supporting a first and second left-side front wheel and a first and second right-side front wheel, wherein each tandem axle frame is connected to the machine frame via a horizontal tandem axle and each front wheel is steerable around an individual vertical steering axis; and
wherein the first and the second left-side front wheels are connected with each other with a forced coupling comprising a steering rod and that the first and the second right-side front wheels are connected with each other with a forced coupling comprising a further steering rod and that the wheels on each side are mechanically arranged in series with regard to the transmittal of the steering forces exerted by the steering actuator via the respective steering rods.