An exhaust system of a work machine is equipped with a first exhaust system, a second exhaust system, and a third exhaust system. The first exhaust system and the third exhaust system are arranged to be in parallel with respective one ends directed in the same direction. In a plan view, the second exhaust system is arranged with the other end side directed in the same direction as the one end sides of the first exhaust system and the third exhaust system to be in parallel with the first exhaust system and the third exhaust system between the first exhaust system and the third exhaust system and, in a side view, is arranged above the first exhaust system and the third exhaust system.

A controller disables the motion of a steering cylinder brought about by a steering lever when an enabled state is selected via a lever switch and an instruction to start an engine is issued via a main switch.

An oxidation catalyst device is placed so that a central axis of the oxidation catalyst device may be oriented along a right and left direction of a work vehicle; a reducing agent injection device is placed so that a central axis of the reducing agent injection device may be oriented along a front and rear direction of the work vehicle; and a selective catalytic reduction device is placed so that a central axis of the selective catalytic reduction device may be oriented along the front and rear direction of the work vehicle, in which the oxidation catalyst device, the reducing agent injection device, and the selective catalytic reduction device are arranged so as to have a relationship that the central axes thereof become the same in height, and the central axis of the selective catalytic reduction device is placed so as to pass through the oxidation catalyst device.

Power machines, control systems and methods that adjust engine speed based upon actuation of user input controls that control other power machine functions such as travel functions and lift arm functions. By controlling engine speed at least partially in response to the user input devices controlling other machine functions, more optimal engine speeds can be achieved.

Disclosed herein is an attachment and vehicle that includes a left loader arm, a right loader arm, and a boom arm operatively attached to the left loader arm and the right loader arm. The boom arm extends in substantially the same direction that both the left loader arm and the right loader arm extends, is positioned between the left loader arm and the right loader arm, and includes a rotating mechanism at a first end for attaching and rotating a vertical column for installation in the ground. The attachment includes a first hydraulic cylinder attaching the left loader arm with the boom arm and a second hydraulic cylinder attaching the right loader arm with the boom arm. The first and second hydraulic cylinders exact rotation on the boom arm, and the first and second hydraulic cylinders extend at least substantially perpendicular to the plane of rotation of the boom arm.

A method of operating a digging machine, including damping the response of a boom hydraulic cylinder operationally connected to a boom arm and actuating a bucket hydraulic cylinder operationally connected to a bucket.

A work vehicle has an operator cabin and an adjustable seat, which is supported by a seat mount surface located within the operator cabin. An elongated opening opens to the interior of the cabin. A mechanical control system may include an operator input device, such as a joystick device, which is mounted to the adjustable seat and which moves therewith as the adjustable seat is slid along a first axis. The mechanical control system includes a port, which is located beneath the seat mount surface and spaced from the elongated opening. A mechanical linkage, such as a push-pull cable, extends from the operator input device, through the elongated opening and the port, and to the exterior of the operator cabin.

Provided is a work vehicle including a cabin and a loader work device. The work vehicle includes: a vehicle main body; a main body rear; front and rear wheels; a bucket; a lifting arm connected to the bucket to lift the bucket; a boom support connected to the lifting arm; a rear link having one end coupled to a first boom support hinge part of the boom support and an opposite end coupled to a rear hinge part of the main body rear; a boom cylinder having one end coupled to a second boom support hinge part of the boom support to rotate the boom support; and a rotation link having one end coupled to a third boom support hinge part of the boom support and an opposite end coupled to a front hinge part of the vehicle main body.

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.

Disclosed are power machines with an operator seat proximal to the rear or back of the power machine, hand grip operator supports which can have user input devices positioned thereon, and foot supports configured to comfortably allow an operator to operate the power machine from both seated and standing positions.