A work vehicle includes: a vehicle body that travels; a boom attached to the vehicle body to be vertically swingable; a work tool mounted to a front portion of the boom; a first illumination lamp that is disposed in the vehicle body and emits an illumination light forward; a second illumination lamp that is disposed in the boom and emits an illumination light toward the work tool; and an illumination controller that controls the first illumination lamp and the second illumination lamp, the illumination controller executing a lighting restriction of automatically turning off or dimming the first illumination lamp while the second illumination lamp is turned on.

A includes a control arm comprising a first link and a second link, a lift arm articulately connected to the first link by a first joint and a first actuating means articulately connected to the first link by the second joint. The second link and the lift arm are adapted to permit a pivotal connection with a loading means by a third joint and a fourth joint, wherein the lift arm is adapted to lift and lower the loading means and the first actuating means is adapted for actuating the control arm, by acting on the first link in at least a direction from the first actuating means, to achieve a rotational movement of the loading means around said fourth joint, when the loading means is connected to the control arm and to the lift arm. During action of the first actuating means on the first link in the direction from the first actuating means a decrease of a distance between the second joint and the third joint is achieved.

A front loader comprises an arm, a work implement supported to a tip portion of the arm, and an angle display device. The angle display device includes a gauge member, an indicator, a shaft member, and a conversion mechanism. The gauge member has a scale indicating an angle of the work implement relative to the arm. The indicator is movable relative to the gauge member according to variations of the angle of the work implement. The shaft member is movable along the arm according to variations of the angle of the work implement. The conversion mechanism changes a relative position of the gauge member and the indicator according to the movement of the shaft member. The conversion mechanism is configured so as to cause the indicator to rotate relative to the gauge member around a rotation axis being parallel to an axis of the shaft member in one direction or another direction according to the movement of the shaft member.

A quick joint of a front loader, the quick joint includes: a coupling member (30) having a hook shape and pivotally connected to a first pivot point (P1) of a boom post (20) through a first pivot shaft (31); a spring member (32) for applying an elastic force in a direction of releasing the coupling member (30) from a coupling target shaft (14) disposed on a boom post support (10) which is attached to a tractor (1); a lock unit (34) having a part making contact with the coupling member (30), and provided with a lock pin (36) for restraining behavior of the coupling member (30) at a coupling position (A1); and a guide slot (38) having an arc shape and formed in the boom post (20) to define a moving path of the lock pin (36) when the lock unit (34) rotates.

The invention relates to a method of controlling a working machine. The method includes monitoring a detection region behind the working machine by means of a rear detection device; and determining whether the working machine is traveling forward or in reverse. The method further includes disregarding an object in the detection region detected by the rear detection device when the working machine is traveling forward. The invention also relates to a control system for controlling a working machine having a rear detection device arranged to monitor a detection region behind the working machine. The invention also relates to a working machine.

The invention relates to a front loader (10) comprising: at least one fastening arrangement (12) connectable to a working vehicle (1); at least one loader arm (20) with a first part (21) and a second part (22) connected via a knee section (23), the first part (21) being pivotally connected to the fastening arrangement (12) at a pivot point (P1); a tool attachment (14) device connected to the second part (22) of the at least one loader arm (20); at least one tilting cylinder (16) connected to the tool attachment device (14) and to a knee link (30) arranged at the knee section (23), wherein the knee link (30) comprises a first attachment point (31) for connection with the tilting cylinder (16), a second attachment point (32) for connection with the loader arm (20), and a third attachment point (33) for connection to a mechanical self-levelling device (50), wherein the knee link (30) is arranged at the knee section (23), such that the first attachment point (31) is essentially aligned with or below an upper end (24) of the first part (21) of the loader arm (20).

Disclosed embodiments include power machines, such as front-end loaders and utility vehicles, with a lift arm and a bucket leveling system utilizing four-bar linkages which mechanically level an attached implement as the lift arm is raised and lowered.

A quick joint of a front loader, the quick joint includes: a coupling member (30) having a hook shape and pivotally connected to a first pivot point (P1) of a boom post (20) through a first pivot shaft (31); a spring member (32) for applying an elastic force in a direction of releasing the coupling member (30) from a coupling target shaft (14) disposed on a boom post support (10) which is attached to a tractor (1); a lock unit (34) having a part making contact with the coupling member (30), and provided with a lock pin (36) for restraining behavior of the coupling member (30) at a coupling position (A1); and a guide slot (38) having an arc shape and formed in the boom post (20) to define a moving path of the lock pin (36) when the lock unit (34) rotates.

A multi-backhoe linkage mechanism, operable for rotating an output link around an output axis of rotation of an output joint at a base, includes a first closed kinematic chain, including the output link, a connecting link, and an input link. The output link is connected via the output joint to the base and via a connecting joint to the connecting link. The connecting link is connected via a bridging joint to the input link. The first closed kinematic chain additionally includes a base link connected to the base and to the input link. One or more additional closed kinematic chains are connected in a series after the first closed kinematic chain. Each additional closed kinematic chain is connected to the previous closed kinematic chain such that actuation of the additional closed kinematic chain amplifies the angle of rotation of the output link around the output axis of rotation.

A lifting arrangement for a construction machine includes a frame arrangement with a front frame portion and a rear frame portion. The lifting arrangement is mountable to the front frame portion and comprises a main arm including a pivot connector and an equipment connector and a main arm support means for pivotably supporting the pivot connector. The main arm support means is movable in a front-rear direction with respect to the frame arrangement. The equipment connector, upon pivoting the main arm between a lowered position and a lifted position, follows a substantially vertical path. The lifting arrangement comprises a tilting arrangement for tilting an equipment mounted to the equipment connector. The tilting arrangement comprises a kinematic chain for attachment to a tilting connector of the equipment mounted to the equipment connector. The kinematic chain comprises a tilting link and a connecting link pivotably connected to each other.