A support for a steering wheel of an agricultural or construction vehicle to improve working conditions of operators inside cabins and, also, to simplify production lines of the vehicle. A steering wheel support is formed by first and second articulated elements which are connected together and fastened on an installation base, and the first articulated element is pivoted on the installation base, while the second articulated element is connected at an opposite end of the first articulated element through a connector element, and a free end of the second articulated element further sustains a framework for installing a steering box with its respective steering wheel.

A floor mat arranged in a working machine includes a floor portion, a wall portion arranged on a circumferential portion of the floor portion, and an opening portion arranged on a part of a connecting portion of the wall portion, the connecting portion connecting to the floor portion. The floor mat includes a mat main body arranged on the floor portion, a covering portion configured to cover the opening portion, and an connecting portion configured to connect the covering portion flexibly to a circumferential portion of the mat main body.

The subject matter of this specification can be embodied in, among other things, a rotary actuator that includes a housing defining an arcuate chamber comprising a cavity, a rotor arm configured for rotary movement, an arcuate-shaped first piston disposed in said housing for reciprocal movement in the arcuate chamber, where a seal, the cavity, and the piston define a pressure chamber that includes part or all of the arcuate chamber, and a portion of the piston contacts the rotor arm, and a rotor assembly rotatably surrounding said housing and having a rotary output tube about the axis, wherein the rotor arm extends radially outward to the rotary output tube and the rotor arm is coupled to the rotary output tube.

A boom mount device of a construction machine can easily align a boom with an upper frame of the construction machine when mounting the boom on the upper frame. The upper frame includes a center section including one pair of left-and-right vertical plates. The vertical plates include outside surfaces facing outside and guide parts disposed on the outside surfaces and guide holes are formed. An adapter that pivotably connects a base end of the boom and a base end of a boom cylinder is mounted on the base end side of the boom. The adapter includes one pair of left-and-right guide pins. When the boom is mounted on the upper frame, the one pair of left-and-right guide pins is inserted into the guide holes of the one pair of left-and-right guide parts.

An excavator for use on slopes having an incline above 30 degrees, the excavator comprising an undercarriage, a propulsion system and a house rotatably mounted to the undercarriage, wherein a rigid member extends upwardly from the undercarriage, through the house and around which the house rotates, the rigid member supports a cradle to which an engine power pack is mounted within the house, the cradle allowing the engine power pack to tilt within the cradle so that it stays generally horizontal as the excavator travels over a slope.

Provided is a construction machine in which a pair of boss parts (17L, 17R) coupled via a boss pipe (18) are welded to a tip end of an arm (7), a coupling pin (16) is rotatably supported in bushes (20L, 20R) of the respective boss parts (17L, 17R), and brackets (8b) of a bucket (8) are coupled to opposite ends of the coupling pin (16). An inner pipe (25) is fitted onto the coupling pin (16) on an inner circumferential side of the boss pipe (18), and defines a grease passage (26) between the coupling pin (16) and the inner pipe (25). Left and right gaps between the boss pipe (18) and the inner pipe (25) are closed with side plates (27L, 27R), and a pair of grease chambers (28L, 28R) communicating with each other via the grease passage (26) are defined. A grease supply pipe (29, 30) has a base end welded to a center of an outer circumferential surface of the inner pipe (25) in an axis (C) direction, and a tip end opened in a left side plate (7L) of the arm (7), so that a nipple (33) is mounted to the tip end.

A working machine includes: a support bracket provided on a machine body and including a boom pivotal support portion and a cylinder pivotal support portion; a boom pivotally supported by the boom pivotal support portion; a boom cylinder pivotally supported at the cylinder pivotal support portion and the boom, and causing the boom to swing upward and downward; a hydraulic hose extended through the support bracket from the rear of the support bracket to the front of the support bracket and connected to the boom cylinder; a first clamp to retain the hydraulic hose on the support bracket; and a second clamp to retain the hydraulic hose on the boom cylinder. The support bracket includes a through hole through which the hydraulic hose is passed in a fore-and-aft direction. The first clamp is disposed rearward of the through hole and forward of the rear end of the boom shaft.

A support for a steering wheel of an agricultural or construction vehicle to improve working conditions of operators inside cabins and, also, to simplify production lines of the vehicle. A steering wheel support is formed by first and second articulated elements which are connected together and fastened on an installation base, and the first articulated element is pivoted on the installation base, while the second articulated element is connected at an opposite end of the first articulated element through a connector element, and a free end of the second articulated element further sustains a framework for installing a steering box with its respective steering wheel.

An excavator having a rotatable arm is disclosed. The excavator includes: a vehicle body configured to have a hydraulic pump; a boom connected to the vehicle body at one end thereof; a boom cylinder coupled between the vehicle body and the boom, and configured to receive hydraulic energy from the hydraulic pump and operate the boom; an arm connected to the other end of the boom; an arm cylinder coupled between the boom and the arm, and configured to receive hydraulic energy from the hydraulic pump and operate the arm; a bucket connected to an end of the arm; and a bucket cylinder coupled between the arm and the bucket, and configured to receive hydraulic energy from the hydraulic pump and operate the bucket. The arm includes: a first body, a second body, and a rotation module configured to enable the rotational movement of the second body.

An arrangement in an articulated joint of a work machine wherein at least two machine parts are rotatably fastened to each other with a conical sleeve shaft joint in which a conical sleeve is pressed against a conical sleeve shaft by an intermediate plate. This intermediate plate includes members for receiving a channel and for connecting the channel to a lubrication channel. The members are formed on the intermediate plate's outer casing which connects a counter-surface to a pressing surface on the side of the conical sleeve to provide a continuous passage for the conical sleeve shaft of the articulated joint.