The automatic connection device includes a fixed connection plate, that is attached to or integrated with the tool holder and stationary relative to same, a movable connection plate, that is mounted movably on the tool so as to be able to both pivot and slide relative to same, and a centering device provided on the tool holder and the tool such that, when said tool is mounted and assembled mechanically on the tool holder, the connection plates are mutually centered and the electrical, pneumatic and/or hydraulic couplers of same are mutually connected so as to connect at least one of the electrical, pneumatic and/or hydraulic networks of the tool to that of the tool holder.

A compaction unit configured for use in the compaction of a surface in connection with construction, excavation and other earth-working or related activities. The compaction unit may be configured as an attachment that can be interchangeably attached to various types of construction machines, operating machines and equipment (such as, but not limited to excavators, backhoes and the like). The compaction unit may be configured as single compaction device capable of performing any combination of (i) vibratory compaction, (ii) roller compaction, (iii) and plate compaction. These capabilities enable the unit to function as a single attachment that can operate as a roller compaction wheel, a vibrating roller compaction wheel, and a vibratory compaction plate depending on the desired application and requirements of the operator.

A digging attachment undercarriage assembly includes two cross members, a pair of mounting bracket hooks, four stabilizing receivers with two common ratchet straps, a left and a right perpendicular beam and a receiver box mounted on a perpendicular horizontal plane on the underside midpoint on both cross members. This invention attaches as an undercarriage on a front load bucket with a receiver box capable of interchanging various digging and other construction tools.

A system configured to couple an implement to a work vehicle includes a first lock assembly coupled to an arm of the work vehicle, and the first lock assembly includes a first lock, a second lock, and a first actuator configured to drive the first lock and the second lock laterally outwardly to engage respective first openings formed in the implement. The system also includes a second lock assembly coupled to a frame of the work vehicle, and the second lock assembly includes a third lock, a fourth lock, and a second actuator configured to drive the third lock and the fourth lock laterally outwardly to engage respective second openings formed in the implement.

A working tool mounting mechanism for a tractor, includes: an extensible cylinder that is disposed on a tip of a boom of a front loader of the tractor, and comprises a cylinder body and a rod slidable with respect to the cylinder body; engaging parts that are respectively disposed on the cylinder body and the rod, and are each movable between an engagement position and a release position with extension and contraction of the extensible cylinder, the engaging parts each engaging with a working tool detachably attached to the boom at the engagement position, and not engaging with the working tool at the release position; a cover that covers the extensible cylinder from one direction; and a frame that is fixed to the cover and restricts at least one of: movement of the cylinder body and the rod in an extensible direction exceeding a predetermined position with the extension and contraction of the extensible cylinder, and rotation of the extensible cylinder around an axial direction.

The invention relates to an implement coupling device (1) on a working machine (2), which device comprises a coupling means (11) provided with a first shaft (21); an engagement means (12) provided with a second shaft (22) arranged parallel to the first shaft (21); at least one linkage (13, 14) comprising a first portion (23, 24) connected to the first shaft (21) and second portion (25, 26) connected to the second shaft (22), which first and second portions are connected by a pivot joint (27); and a wedge (28) means arranged to be removably mounted between the first and second portions (23, 24; 25, 26), wherein the coupling means (11) and the engagement means (12) are displaceable relative to each other in a direction at right angles to the first and second shafts (21, 22) to attach or release the implement. At least one portion (23, 24; 25, 26) making up a linkage (13, 14) is detachably fixed to its respective shaft (21, 22) by a locking means (31, 32, 33, 34) in a longitudinal recess (41, 42, 43, 44) at right angles to the shaft (21, 22) and engaging with a tangential recess (51, 51′, 51″) in the outer surface of the shaft (21, 22).

The invention relates to a bolt connection with a bearing bolt, in particular for a construction machine, in particular for underground engineering and for a swivel lever, in particular for a construction machine, which connects a first component and a second component pivotably to each other, wherein the bearing bolt extends through at least one first bearing eye on the first component and at least one second bearing eye on the second component, and wherein the bearing bolt can be driven, for releasing the connection, on an exit side out of the first bearing eye and the second bearing eye. At the exit side a protective reception is arranged, which is designed to receive and hold the driven-out bearing bolt.

The coupler is mounted on the end of the boom of a boom-tractor, and provides secure locking-in of a bucket. The coupler having been set to its latched-open condition, the tractor is driven to the bucket so that a bottom-lug of the bucket enters the coupler, whereupon the bucket is picked up and is automatically securely locked into coupler, without any manipulation of the coupler being required of the tractor-driver other than manipulation of the boom. For setting the bucket down on the ground, after use, the driver manually pulls out a slider of the coupler. That action sets the coupler into its slider-held condition, whereby when the tractor is driven away from the bucket, the coupler is automatically left set in the said latched-open condition.

A tool holder includes a locking cylinder provided with two first gripping pins extending laterally from each side of the fixed part thereof, and two second gripping pins extending laterally from each side of the moving part thereof. The tool includes at least two reception assemblies each having a first receiving portion and a second receiving portion the openings of which are each facing and provided to receive one of the first gripping pins and one of the second gripping pins for retaining the tool on the tool holder. The tool is locked on the tool holder by means of the locking cylinder by moving each gripping pin into abutment at the bottom of the associated receiving portion thereof.

A first pinhole is formed in a first member in a section facing a second member. A second pinhole is formed in the second member in a section facing the first member. A connecting pin is inserted into the first pinhole and the second pinhole from the side of the machine center. A coming-off prevention mechanism includes a coming-off prevention lever. The coming-off prevention lever can abut the inner end surface of the connecting pin. The coming-off prevention lever is supported by the second member to be able to move between an abutting position of abutting the inner end surface of the coupling pin and a non-abutting position of not abutting the inner end surface.