Apparatus and methods for lifting loads are described. The load lift includes a support frame and a lift assembly with main cylinder and at least one standby cylinder connecting a rotatable cross beam with a clamp plate. A rotary actuator assembly is connected to the lift beam to move the lift assembly out of the way while not in use by rotating the lift assembly from a lift position to a standby position.

Apparatus and methods for lifting loads are described. The load lift includes a support frame and a lift assembly with main cylinder and at least one standby cylinder connecting a rotatable cross beam with a clamp plate. A rotary actuator assembly is connected to the lift beam to move the lift assembly out of the way while not in use by rotating the lift assembly from a lift position to a standby position.

A chamber conveyor belt machine having a machine frame, a chamber cover with two or more columns and a lifting device for lifting the chamber cover. The lifting device may include a safety system that includes a latching rail that cooperates with a latching hook disposed on at least one of the two columns. The safety system may include one or more sensors for determining whether the lifting device is working correctly or is in a failure condition. The safety system may prevent the chamber conveyor belt machine from operating if a failure condition is sensed.

A chamber conveyor belt machine having a machine frame, a chamber cover with two or more columns and a lifting device for lifting the chamber cover. The lifting device may include a safety system that includes a latching rail that cooperates with a latching hook disposed on at least one of the two columns. The safety system may include one or more sensors for determining whether the lifting device is working correctly or is in a failure condition. The safety system may prevent the chamber conveyor belt machine from operating if a failure condition is sensed.

A hydraulic lifting device for a chassis of a mobile device has a valve block, a pump, a tank, a first cylinder device and a second cylinder device. The first cylinder device and the second cylinder device can be selectively pressurized by the pump or connected to tank via the valve block. The first cylinder device is connected to the pump via at least one primary non-return valve disposed in the valve block. The second cylinder device is connected to the pump via at least one secondary non-return valve disposed in the valve block. The valve block has at least one pressure accumulator downstream of the at least one secondary non-return valve in the flow direction from the pump to the second cylinder device. Furthermore, a chassis with such a lifting device and to a mobile device with a chassis is provided.

A hydraulic lifting device for a chassis of a mobile device has a valve block, a pump, a tank, a first cylinder device and a second cylinder device. The first cylinder device and the second cylinder device can be selectively pressurized by the pump or connected to tank via the valve block. The first cylinder device is connected to the pump via at least one primary non-return valve disposed in the valve block. The second cylinder device is connected to the pump via at least one secondary non-return valve disposed in the valve block. The valve block has at least one pressure accumulator downstream of the at least one secondary non-return valve in the flow direction from the pump to the second cylinder device. Furthermore, a chassis with such a lifting device and to a mobile device with a chassis is provided.

A jack, comprising: a top plate adapted to contact a load; a base plate positioned below the top plate; at least one actuator coupled perpendicularly between the base plate and the top plate; wherein the at least one actuator is operable to move the top plate between a lowered position and a raised position to thereby lower and raise the load; and, at least one locking assembly adapted to lock the top plate in the raised position.

A jack, comprising: a top plate adapted to contact a load; a base plate positioned below the top plate; at least one actuator coupled perpendicularly between the base plate and the top plate; wherein the at least one actuator is operable to move the top plate between a lowered position and a raised position to thereby lower and raise the load; and, at least one locking assembly adapted to lock the top plate in the raised position.

The present disclosure provides a hydraulic jack, including a base as a carrier for mounting other components; an inner cylinder barrel vertically fixed to the base, a sliding cavity being formed in the inner cylinder barrel; an outer cylinder barrel vertically and slidably fitted outside the inner cylinder barrel; a valve plug assembly slidably fitted in the sliding cavity, and the valve plug assembly being rigidly connected to the outer cylinder barrel via a valve plug rod and being able to slide synchronously with the outer cylinder barrel; a valve plug driving assembly mounted on the outer cylinder barrel; and a supporting component mounted on the side wall of the outer cylinder barrel in an up-down adjustable mode. The hydraulic jack of the present disclosure is compact in structure, high in strength, high in load capacity, long in stroke, and safe and reliable in use.

The present disclosure provides a hydraulic jack, including a base as a carrier for mounting other components; an inner cylinder barrel vertically fixed to the base, a sliding cavity being formed in the inner cylinder barrel; an outer cylinder barrel vertically and slidably fitted outside the inner cylinder barrel; a valve plug assembly slidably fitted in the sliding cavity, and the valve plug assembly being rigidly connected to the outer cylinder barrel via a valve plug rod and being able to slide synchronously with the outer cylinder barrel; a valve plug driving assembly mounted on the outer cylinder barrel; and a supporting component mounted on the side wall of the outer cylinder barrel in an up-down adjustable mode. The hydraulic jack of the present disclosure is compact in structure, high in strength, high in load capacity, long in stroke, and safe and reliable in use.