Abstract: An earth levelling blade assembly for mounting on the lift arms of a loader includes a laterally extending main blade and two shoes supported at opposing ends of the main blade for sliding engagement along the ground. The shoes are supported for movement between a forward position ahead of the main blade and a rearward position behind the main blade, as well as being adjustable in height relative to a bottom cutting edge of the main blade. A coupling arrangement between a first mounting frame on the lift arms of the loader and a second mounting frame on the rear mounting face of the main blade (i) supports the second mounting frame to be freely pivotal about a forward axis relative to the first mounting frame in which the forward axis is oriented in the forward working direction of the loader and (ii) supports the second mounting frame to freely translate relative to the first mounting frame along an upright axis.

Abstract: A coupling assembly for a machine includes a work implement having a float mode, in which the work implement moves relative to the machine, and a lock mode, in which the work implement has a fixed position relative to the machine. A pin assembly connects the work implement to the machine and itself is movable between a float position, in which the pin assembly supports the work implement in the float mode, and a lock position, in which the pin assembly supports the work implement in a lock mode. A retainer has a float assembly configuration, in which the retainer holds the pin assembly in the float position, and a lock assembly configuration, in which the retainer holds the pin assembly in the lock position, thereby facilitating adjustment of the work implement between float and lock modes.

Abstract: A pivot mechanism for adjusting a blade on a work vehicle is provided. The pivot mechanism includes a bushing bolt fastened to a mounting bracket on the blade. The bushing bolt has a spherical portion fixedly positioned between coupling ends and configured to receive a bushing. The pivot mechanism further includes a cylinder coupled to the bushing bolt for controlling the position of the blade.

Abstract: A mounting assembly (6) for mounting a bulldozer blade (2) to a vehicle (4) is disclosed. The assembly comprises a lower link (8) adapted to be mounted to a vehicle, a pair of first actuators (16, 18) adapted to be pivotably mounted to the blade, and to a pair of link plates (24, 26) via respective pin joints (28, 30), and a pair of second actuators (36, 38) adapted to adjust the position of respective pin joints (28, 30) relative to the lower link to adjust the orientation of the blade relative to the vehicle.

Abstract: A blade control system of the present invention includes an angle obtaining part, an open ratio setting part and a lift cylinder controlling part. The angle obtaining part is configured to obtain an angle of a lift frame with respect to a designed surface. The open ratio setting part is configured to set an open ratio based on the angle. The lift cylinder controlling part is configured to open a proportional control valve at the open ratio for elevating the blade when a distance between the designed surface and an edge of a blade is determined to be less than or equal to a threshold.

Abstract: A blade (3) meant to work in the curved form of a snow plough and attached from its lower edge to a rigid beam, the upper edge of which is supported by means of upper beam (12) or similar, and said blade is of flexible material, as plastic sheet. The blade is from its upper beam (12), essentially from its middle, supported by suspension means (9), which due to the ploughing load allows upper beam (12) and blade (3) upper edge to tilt and blade (3) to change the radius of curvature at least from the suspension spot on the blade area toward the blade point.

Abstract: A swivel work machine comprises: a travel device; a swivel base provided on the travel device; a swivel base provided in the front of the travel device; a dozer provided to the travel device; a swing control; a dozer control; a tilt control member provided to the dozer control, an actuation of the tilt control member causing the dozer to be pivoted about the tilt pivot shaft; a controller having a swing control mode in which an actuation of the swing control causes the implement to be pivoted laterally, and an angle control mode in which an actuation of the swing control causes the dozer to be pivoted about the angle pivot shaft; and a mode change-over portion for switching a control mode of the controller between the swing control mode and the angle control mode.

Abstract: A blade mounting structure of a bulldozer capable of enhancing visibility and operability of a blade is provided. A left portion and a right portion of a blade and a vehicle main body are swingably connected with a set of left and right straight frames. The straight frames and the blade are swingably connected respectively by a hydraulic cylinder and a support member. The blade mounting structure includes an arm for connecting a single one of the straight frames and the blade to be swingable up and down and to the left and the right. A connecting point of the arm and the blade is provided on an axis line connecting horizontal axes of rotation of connecting points of the set of left and right straight frames and the blade in plane view.

Abstract: A bulldozer blade mounting structure is disclosed. The mounting structure includes a first pivot arm having a first end adapted for pivotal attachment to a tractor and a second end coupled to a bulldozer blade, and a second pivot arm having a first end adapted for pivotal attachment to a tractor and a second end coupled to a bulldozer blade. The mounting structure also includes a first coupling joint coupling the second end of the first pivot arm to the bulldozer blade, wherein the first coupling joint permits the bulldozer blade to rotate about a longitudinal axis of the first pivot arm and to rotate about an axis substantially perpendicular to the longitudinal axis of the first pivot arm.

Abstract: A deformable plow operates off of at least one hydraulic cylinder that extends from a post on the plow frame to a guide bar positioned along the upper edge of a plastic or deformable moldboard.

Abstract: The caterpillar track attachment is provided for a vehicle having a drive shaft and a steering mechanism. The attachment comprises a pair of endless caterpillar tracks for propelling the vehicle, a frame for supporting the vehicle, drive devices to be operatively connected to the drive shaft and engaging the tracks for transmitting motive power from the drive shaft to the tracks, and a hydraulic device to be coupled to the steering mechanism for providing at least one hydraulic fluid outlet controlled by commands from the steering mechanism. The frame has securing devices for connecting the vehicle onto the frame, and a pair of spaced apart elongated side members around which the tracks are respectively mounted. Each of the members has front and rear sets of wheels located substantially at its front and rear extremities for guiding therearound the corresponding track, and straight slides located at its lower portion between the corresponding rear and front sets of wheels for guiding the corresponding track.

Abstract: A slide rail assembly (18) and slide plate (20) are used, for example, to position an implement (14) of a work vehicle (10), such as a bulldozer (14), at various angles. The bulldozer connected slide plate (20) moves along a vehicle connected rail (22) of the rail assembly (18) to a desired position of the bulldozer (14). A pin (50) is positioned through openings (48,52) in the rail (22) and slide plate (20) to maintain the position. The pin (50) or rail (22) can sometimes fail owing to working loads exerted on the bulldozer (14). Support members (54) each having pin receiving openings (56) in register with respective rail openings (48) are connected to the rail assembly (18) to increase bearing support area of the pin (50) and to strengthen the rail assembly (18). The support members (54) also each have openings (58) aligned with openings (44,46) in the rail assembly (18) for relief of material packed into the rail (22) and into the pin receiving openings (48,56).