One embodiment of a thumb for an implement of a machine has first and second side plates each having a pivot end for pivotally connecting to a linkage of the machine and an engagement end for engaging with a load. The thumb also has a belly plate extending across a width of the thumb between the first and second side plates and extending along a length of the thumb from the pivot end toward the engagement end. Additionally, the thumb has a thumb support structure disposed closer to the engagement end than to the pivot end. The thumb support structure has a first support plate extending widthwise between the first and second side plates and a second support plate extending widthwise between the first and second side plates and further extending between the first support plate and the belly plate.

To set time difference to the starting time of excavation and scooping by setting the starting of the scooping with a bucket behind the starting of the excavation with a ripper in an excavation machine where the bucket and the ripper are equipped to an arm, and are manipulated to open and close with each other by expansion and contraction of a hydraulic cylinder During the first half of the contracting process at a hydraulic cylinder, a pin mounted on a connecting link where a bucket and a ripper are connected moves through a slot formed on the bucket to make bucket delay in closing, and the bucket and the ripper close at the same time during the latter half of the contracting process.

A detachable thumb assembly for a construction equipment machine includes a mounting bracket for attaching the thumb assembly to a digging apparatus of the machine, a thumb pivotally connected on the mounting bracket, a thumb cylinder including a cylinder body connected to the mounting bracket and a cylinder rod which extends from a front end of the cylinder body and which is connected to the thumb. The body of the thumb cylinder is pivotally connected to the mounting bracket at a connection portion of the body which is distinct from a body back end portion.

A detachable thumb assembly for a construction equipment machine includes a mounting bracket for attaching the thumb assembly to a digging apparatus of the machine, a thumb pivotally connected on the mounting bracket, a thumb cylinder including a cylinder body connected to the mounting bracket and a cylinder rod which extends from a front end of the cylinder body and which is connected to the thumb. The body of the thumb cylinder is pivotally connected to the mounting bracket at a connection portion of the body which is distinct from a body back end portion.

A working machine is disclosed. A boom supports an arm. An upper revolving body supports the boom. A lower traveling body mounts the upper revolving body in a rotatable state. A hydraulic actuator drives a hydraulic oil while relieving the hydraulic oil. A first pump supplies the hydraulic oil to the hydraulic actuator. A pump state detector detects load of the first pump. A controller reduces a flow rate of the hydraulic oil from the first pump to the hydraulic actuator when the pump state detector detects a predetermined state.

A cross-link assembly for a dangling worktool may include a frame configured to connect to a grapple, the frame having spaced apart arms; a pin movably engaged with the spaced apart arms, the pin having an abutment portion; and a lock member movably engaged with the frame. The lock member may be configured to engage with the abutment portion and have a lock portion configured to engage with a lock element provided on the grapple.

A cross-link assembly for a dangling worktool may include a frame configured to connect to a grapple, the frame having spaced apart arms; a pin movably engaged with the spaced apart arms, the pin having an abutment portion; and a lock member movably engaged with the frame. The lock member may be configured to engage with the abutment portion and have a lock portion configured to engage with a lock element provided on the grapple.

An attachment that is configured for attachment to an arm of a piece of heavy construction equipment. The attachment is configured to rotate a section of pipe during break-out (i.e. disconnection or disassembly) from another section of pipe and/or make-up (i.e. connection or assembly) with another section of pipe. The attachment is configured to break the joint or torque the joint, unthread or thread pipe, and lift the pipe under the power of the heavy construction equipment.

A plow system includes a mounting structure configured to mount at a vehicle, with a center plow pivotally attached at the mounting structure. The center plow is pivoted in a first direction responsive to actuation of a first actuator and is pivoted in a second direction responsive to actuation of a second actuator. A first plow wing is pivotally mounted at a first end of the center plow and a second plow wing is pivotally mounted at a second end of the center plow. Responsive to pivoting of the center plow to a first fully pivoted orientation toward a first side of the vehicle, the first and second plow wings both pivot to a forward orientation. Responsive to pivoting of the center plow to a second fully pivoted orientation toward a second side of the vehicle, the first and second plow wings both pivot to a rearward orientation.

A plow system includes a mounting structure configured to mount at a vehicle, with a center plow pivotally attached at the mounting structure. The center plow is pivoted in a first direction responsive to actuation of a first actuator and is pivoted in a second direction responsive to actuation of a second actuator. A first plow wing is pivotally mounted at a first end of the center plow and a second plow wing is pivotally mounted at a second end of the center plow. Responsive to pivoting of the center plow to a first fully pivoted orientation toward a first side of the vehicle, the first and second plow wings both pivot to a forward orientation. Responsive to pivoting of the center plow to a second fully pivoted orientation toward a second side of the vehicle, the first and second plow wings both pivot to a rearward orientation.