A central column allowing a 360 rotation on its central axis comprises mechanical safety locks and load sensors for safe operation in vertical and horizontal movements. The central rotating column may be part of a mounting and dismounting system for mining truck dump bodies and water truck bodies, providing two adjacent working areas. The lifting system for dump bodies of mining trucks and bodies of water trucks comprises a vertically adjustable mechanical lock; a spring-actuated automatic lock horizontally holding the column in position; an automatic rotation lock preventing the column from rotating while in operation; a toothed crown and pinion assembly integrated to the rotating base and allowing a 360 movement, and a load sensor preventing the horizontal movement of the column under load.

A central column allowing a 360 rotation on its central axis comprises mechanical safety locks and load sensors for safe operation in vertical and horizontal movements. The central rotating column may be part of a mounting and dismounting system for mining truck dump bodies and water truck bodies, providing two adjacent working areas. The lifting system for dump bodies of mining trucks and bodies of water trucks comprises a vertically adjustable mechanical lock; a spring-actuated automatic lock horizontally holding the column in position; an automatic rotation lock preventing the column from rotating while in operation; a toothed crown and pinion assembly integrated to the rotating base and allowing a 360 movement, and a load sensor preventing the horizontal movement of the column under load.

The invention provides for a hydraulic cylinder position sensing and locking system that automatically maintains the position of a lock nut (36) that engages a plunger (16) on a hydraulic actuator such that if hydraulic pressure is lost, the lock nut prevents retraction of the plunger into the hydraulic cylinder (14). The hydraulic cylinder position sensing and locking system also provides for a position sensing feature that allows for the calculation of the axial stroke position of the plunger based on rotary movement of the lock nut. In addition, the invention provides for a synchronous hydraulic cylinder position sensing and locking system and methods of using both the hydraulic cylinder position sensing and locking system as well as the synchronous hydraulic cylinder position sensing and locking system.

The invention provides for a hydraulic cylinder position sensing and locking system that automatically maintains the position of a lock nut (36) that engages a plunger (16) on a hydraulic actuator such that if hydraulic pressure is lost, the lock nut prevents retraction of the plunger into the hydraulic cylinder (14). The hydraulic cylinder position sensing and locking system also provides for a position sensing feature that allows for the calculation of the axial stroke position of the plunger based on rotary movement of the lock nut. In addition, the invention provides for a synchronous hydraulic cylinder position sensing and locking system and methods of using both the hydraulic cylinder position sensing and locking system as well as the synchronous hydraulic cylinder position sensing and locking system.

The invention provides for a hydraulic cylinder position sensing and locking system that automatically maintains the position of a lock nut (36) that engages a plunger (16) on a hydraulic actuator such that if hydraulic pressure is lost, the lock nut prevents retraction of the plunger into the hydraulic cylinder (14). The hydraulic cylinder position sensing and locking system also provides for a position sensing feature that allows for the calculation of the axial stroke position of the plunger based on rotary movement of the lock nut. In addition, the invention provides for a synchronous hydraulic cylinder position sensing and locking system and methods of using both the hydraulic cylinder position sensing and locking system as well as the synchronous hydraulic cylinder position sensing and locking system.

The invention provides for a hydraulic cylinder position sensing and locking system that automatically maintains the position of a lock nut (36) that engages a plunger (16) on a hydraulic actuator such that if hydraulic pressure is lost, the lock nut prevents retraction of the plunger into the hydraulic cylinder (14). The hydraulic cylinder position sensing and locking system also provides for a position sensing feature that allows for the calculation of the axial stroke position of the plunger based on rotary movement of the lock nut. In addition, the invention provides for a synchronous hydraulic cylinder position sensing and locking system and methods of using both the hydraulic cylinder position sensing and locking system as well as the synchronous hydraulic cylinder position sensing and locking system.

The present invention, in one or more embodiments, provides a jack-positioning device of jack including a seating bottom and a loading table, where the jack-positioning device includes a base portion to support the seating bottom of the jack, an arm portion to connect the base portion, and a top portion to press against the loading table of the jack, and where the top portion along with the arm portion is to position the jack at a holding position, and the arm portion is rotatable relative to the base portion and the top portion. The jack-positioning device of the present invention may be employed to position the jack within a tight space in a relatively time efficient manner.

The present disclosure relates to a jacking device. A device base provided with a jacking channel. The jacking channel extends in a longitudinal direction of the device base. A jacking body member is movably mounted inside the jacking channel in the longitudinal direction of the device base. A jacking power member is disposed on the device base. The jacking power member is drivingly connected to the jacking body member and configured to apply jacking driving force to the jacking body member. The jacking driving force is configured to drive the jacking body member to move upward along the jacking channel. A locking mechanism is disposed on one of the device base and the jacking body member. The locking mechanism is configured to lock the jacking body member in any position of the jacking channel.

The present disclosure relates to a jacking device. A device base provided with a jacking channel. The jacking channel extends in a longitudinal direction of the device base. A jacking body member is movably mounted inside the jacking channel in the longitudinal direction of the device base. A jacking power member is disposed on the device base. The jacking power member is drivingly connected to the jacking body member and configured to apply jacking driving force to the jacking body member. The jacking driving force is configured to drive the jacking body member to move upward along the jacking channel. A locking mechanism is disposed on one of the device base and the jacking body member. The locking mechanism is configured to lock the jacking body member in any position of the jacking channel.

A modular system for the shelter, transport, positioning and elevation of sensors including a first module (A, I) and a second module (B, II) side by side and cooperating with each other. The first module operates as a functional block with vertical translation and the second module operates as a functional block with rotation/horizontal translation. Each module comprises a lifting means and together the two modules enable a sequential lifting of the sensor means in two phases. In one embodiment, there is also a third interfacing module (C) responsible for the switching of functional blocks included in the first and/or second module.