A lifting device for use in lifting towable irrigation towers mounted on an all terrain vehicle (ATV). The lifting device having a support frame fitted beneath the ATV, a parallelogram linkage attached to the support frame operable with a hydraulic cylinder between a collapsed and upright position with saddles on an upper rail for lifting an axle of the tower such that the tower wheels can be rotated, a winch for raising and lowering the support frame and a suspension limiter for stopping movement of the support frame in the up position such that the frame does not damage the underside of the ATV.

The present invention provides a double parallelogram vertical lifting device comprising a linkage mechanism and a pushing device. The linkage mechanism comprises a first shaft seat, a second shaft seat, a third shaft seat, an upper support unit movably coupled to the first shaft seat and the second shaft seat on both ends, and a lower support unit movably coupled to the second shaft seat and the third shaft seat on both ends. The upper support unit is provided with a first gear, and the lower support unit is provided with a second gear that meshes with the first gear. The pushing device has one end set on the upper support unit and the other end set on the lower support unit. The invention utilizes the interaction of the first gear and the second gear to generate a reaction force, which enables the lower support unit to cooperate with the upper support unit to move up and down synchronously, and achieves the effect of simple structure and large load capacity.

Engine installation systems and related methods. An engine installation system includes an adapter cradle and a transport dolly. The adapter cradle is configured to support the engine, and the transport dolly is configured to be selectively and operatively coupled to the adapter cradle to support the adapter cradle to facilitate transporting the adapter cradle and the engine across a ground surface. The adapter cradle is configured to be selectively coupled to each of the transport dolly and the vehicle. The adapter cradle is configured to pivot relative to the transport dolly or relative to the vehicle to transition between a transport configuration and an upright configuration. In examples, methods of installing an engine within an engine bay of a vehicle include positioning the engine beneath the engine bay, pivoting the engine relative to the vehicle, and lifting the engine into the engine bay.

A jack assembly and a system for supporting a partially submerged structure. The jack assembly may include a fluid jack including a cylinder and a ram, the cylinder having at least one fluid chamber configured to receive a pressurized fluid to move the ram; and a valve housing removably coupled to the fluid jack for providing fluid communication between the fluid jack and at least one fluid conduit, the valve housing including a link movable from a first position toward a second position, the valve housing being secured to the jack while the link is in the first position, the valve assembly being disconnectable from the jack while the link is in the second position.

The lifting/lowering device (100) includes: a first plate member (51); a second plate member (52) to which the first plate member (51) is rotatably connected; a first expansion and contraction bag (31) which is disposed between the first plate member (51) and the second plate member (52) and is capable of expanding and contracting by gas supply and exhaust; a third plate member (53) to which the second plate member (52) is rotatably connected; a second expansion and contraction bag which is disposed between the second plate member (52) and the third plate member (53) and is capable of expanding and contracting by gas supply and exhaust. The first plate member (51), the first expansion and contraction bag (31), the second plate member (52), the second expansion and contraction bag (32) and the third plate member (53) are disposed so as to overlap in a plan view.

A kit may include at least one frame lifting mechanism configured to be mounted within the support frame. The lifting mechanism may include a movable element configured to be movably mounted to the frame and an extendible member configured to extend between the movable element and a static member mounted on the frame. The movable element includes at least one support portion extending from a lower surface of the movable element when the movable element is mounted to the frame. The extendible member is configured to be movable between a compressed state and an extended state. The movable element is configured to be mounted to the frame such that on extension of the extendible member the movable element is pushed downwards and the at least one support portion moves below a base of the frame and provides a lifting force to the frame.

Engine installation systems and related methods. An engine installation system includes an adapter cradle and a transport dolly. The adapter cradle is configured to support the engine, and the transport dolly is configured to be selectively and operatively coupled to the adapter cradle to support the adapter cradle to facilitate transporting the adapter cradle and the engine across a ground surface.

The adapter cradle is configured to be selectively coupled to each of the transport dolly and the vehicle. The adapter cradle is configured to pivot relative to the transport dolly or relative to the vehicle to transition between a transport configuration and an upright configuration. In examples, methods of installing an engine within an engine bay of a vehicle include positioning the engine beneath the engine bay, pivoting the engine relative to the vehicle, and lifting the engine into the engine bay.

A method and apparatus for lifting a process station from a processing module is described herein. The apparatus includes a lift assembly disposed on the processing module, a lift cage, and one or more guide pins. The lift assembly is disposed to be capable of reaching each of the process stations disposed within the processing module. The lift assembly is used for replacement and maintenance of the process stations and further enables the automated removal and placement of the process stations within the processing module. Maintenance methods enabled by the lift assembly are additionally disclosed herein.

A tractor trailer jacking assembly f includes a plurality of jacks that is each mounted on a bottom of a tractor trailer. Each of the jacks is positionable in an extended position to engage the ground to inhibit the tractor trailer from tipping. A control circuit is mounted on a semi tractor and the control circuit detects the speed of the semi tractor. A gyroscope unit is mounted on the semi tractor to detect a degree and a direction to which the semi tractor is tipping. The control circuit actuates the respective jacks into the deployed position on a corresponding side of the tractor trailer when the gyroscope unit detects the semi tractor has tipped beyond a pre-determined angle of tilt.

A tractor trailer jacking assembly f includes a plurality of jacks that is each mounted on a bottom of a tractor trailer. Each of the jacks is positionable in an extended position to engage the ground to inhibit the tractor trailer from tipping. A control circuit is mounted on a semi tractor and the control circuit detects the speed of the semi tractor. A gyroscope unit is mounted on the semi tractor to detect a degree and a direction to which the semi tractor is tipping. The control circuit actuates the respective jacks into the deployed position on a corresponding side of the tractor trailer when the gyroscope unit detects the semi tractor has tipped beyond a pre-determined angle of tilt.