When pressurized fluid is not supplied into or discharged from the first channel 28a of the piston rod 28, that is, when the first channel 28a is isolated from the outside, the cylinder tube 22 is in a stopped state. At this time, fluid inside the first cylinder chamber 36a is compressed, and the pressure is increased accordingly to match the sum of the weights of the cylinder tube 22, the table 18, and the workpiece W.

An intake-exhaust transport apparatus, a mobile power generation system and an assembling method thereof are provided. The assembling method includes: roughly adjusting a position of the intake-exhaust system in a second direction with respect to the power generation apparatus by the second conveyance; jacking up the intake assembly and the exhaust duct as a whole, to be higher than a height of the power generation apparatus by the lifting mechanism; moving the power generation apparatus to a region under the intake-exhaust system by the first conveyance and adjusting a position of the power generation apparatus in the first direction with respect to the intake-exhaust system; and connecting the intake assembly and the exhaust duct to a top of the power generation apparatus.

An intake-exhaust transport apparatus, a mobile power generation system and an assembling method thereof are provided. The assembling method includes: roughly adjusting a position of the intake-exhaust system in a second direction with respect to the power generation apparatus by the second conveyance; jacking up the intake assembly and the exhaust duct as a whole, to be higher than a height of the power generation apparatus by the lifting mechanism; moving the power generation apparatus to a region under the intake-exhaust system by the first conveyance and adjusting a position of the power generation apparatus in the first direction with respect to the intake-exhaust system; and connecting the intake assembly and the exhaust duct to a top of the power generation apparatus.

Pool protection systems are disclosed. In one particular embodiment, a pool protection system may include a platform fitted in a pool, oriented substantially parallel to a surface of water in the pool, and configured to move vertically in the pool; one or more motors mechanically connected to the platform; and a controller in communication with the one or more motors.

A system is used for lifting a heavy oversized structural element. At least two opposing lifts are placement adjacent opposing sides of the element. Each lift includes a base, a tower, an elevator, and an actuator. The tower extending vertically from the base, and the elevator is disposed on the tower. A support extends from the elevator outward from the tower to engage a point on the element. A guide of the elevator is configured to ride along a rail of the tower. The actuator is connected to the elevator and is configured to move with the elevator vertically along the tower. The actuator can include a strand jack disposed on the elevator. Hydraulic operation of the stand jack moves the jack and elevator along a strand extending along the tower. The arrangements of the lifts leave space below the raised element free for access to other operations.

A set of lift controls may be configured to determine the load on the motor (112) by a vehicle of an unknown weight during operation at a standard lift speed and use such information to determine a potential speed that the motor may raise the vehicle at while staying within safe operational levels for the motor. One or more of a magnitude of electrical power drawn, a pressure generating by a hydraulic lifting, or a sensed vehicle weight may be used to provide an indication of load on the motor and/or a higher potential speed.

A set of lift controls may be configured to determine the load on the motor (112) by a vehicle of an unknown weight during operation at a standard lift speed and use such information to determine a potential speed that the motor may raise the vehicle at while staying within safe operational levels for the motor. One or more of a magnitude of electrical power drawn, a pressure generating by a hydraulic lifting, or a sensed vehicle weight may be used to provide an indication of load on the motor and/or a higher potential speed.

The present invention relates generally to a DEF tank hydraulic jack adapter plate. The adapter can be fixedly or removably attached to the top surface of an existing hydraulic jack such that the jack can be used to remove or replace a DEF tank from a diesel vehicle. Accordingly, the adapter secures a tank to the plate body of the adapter via a plurality of frame arms which attach to the vertical plates of the plate body. The adapter ensures the tank is retained upon the adapter and subsequently on the jack.

The present invention relates generally to a DEF tank hydraulic jack adapter plate. The adapter can be fixedly or removably attached to the top surface of an existing hydraulic jack such that the jack can be used to remove or replace a DEF tank from a diesel vehicle. Accordingly, the adapter secures a tank to the plate body of the adapter via a plurality of frame arms which attach to the vertical plates of the plate body. The adapter ensures the tank is retained upon the adapter and subsequently on the jack.

The invention provides a mechanically unlocked automobile lifter includes a power device, oil cylinders and lifting platform devices. The lifting platform devices include two lifting platform devices having a same structure. Each lifting platform device includes an upper table and a lower plate having a scissor-type support arm disposed therebetween. The scissor-type support arm includes first and second support arms, ends of the first support arm are respectively slidably connected with the upper table and fixedly connected with the lower plate, ends of the second support arm are respectively fixedly connected with the upper table and slidably connected with the lower plate. The lower plates have first and second beams disposed therebetween. The oil cylinders are disposed on the scissor-type support arms of the two lifting platform devices, and the power device is connected with the oil cylinders. Each lower plate is disposed with a mechanical safe locking device.