A conveying device of the present invention includes a holding unit configured to hold a conveying object, a support member swingably supporting the holding unit, a plurality of hanging members, each distal end of which is connected to the support member so as to hang the holding unit via the support member, reel units to which each proximal end of the plurality of hanging members is connected so as to be capable of feeding and wounding, a base part on which the plurality of reel units are mounted, a guide unit configured to engage with the holding unit, and guide the holding unit to be elevated, and a control unit configured to perform operation control on the reel units so as to feed and wind the hanging member.

A double-reeved lifting device includes a lower reeve block secured to a lifting hook and an upper reeve block, wherein the two reeve blocks include reversible connection means adapted to be reversibly configured between a connected configuration and a disconnected configuration. The reversible connection means include a locking mechanism and a complementary locking structure having a frame securely supporting a bolt. The locking mechanism includes a chassis having a locking channel provided with a mouthpiece through which the bolt is configured to enter and exit and slide in the locking channel respectively upon a relative approach or distancing between the two reeve blocks, and at least one latch pivotally mounted on the chassis so as to pivot inside the locking channel, the latch provided with a free end adapted to engage with the bolt.

A double-reeved lifting device includes a lower reeve block secured to a lifting hook and an upper reeve block, wherein the two reeve blocks include reversible connection means adapted to be reversibly configured between a connected configuration and a disconnected configuration. The reversible connection means include a locking mechanism and a complementary locking structure having a frame securely supporting a bolt. The locking mechanism includes a chassis having a locking channel provided with a mouthpiece through which the bolt is configured to enter and exit and slide in the locking channel respectively upon a relative approach or distancing between the two reeve blocks, and at least one latch pivotally mounted on the chassis so as to pivot inside the locking channel, the latch provided with a free end adapted to engage with the bolt.

A fixing device that fixes a lower end portion of a suspension belt to a holding portion is provided with a shaft-like portion with an axial direction aligned with a horizontal direction; a fixing portion where the lower end portion of the suspension belt is fixed is provided on an outer circumferential surface of the shaft-like portion; a region of the outer circumferential surface on one side of a virtual vertical surface that runs through an axial center of the shaft-like portion is defined as a first region and a region of the outer circumferential surface on the other side of the virtual vertical surface is defined as a second region; the fixing portion is provided in the first region; and the suspension belt extending from the fixing portion is disposed running through a lowest portion of the outer circumferential surface and running along the second region and upward.

A lift unit docking system includes a docking rail, a docking rail adapter, and a locking mechanism. The docking rail is configured to provide ingress and egress of a lift unit to and from an overhead rail, and includes a body defining a channel and an adapter receiving opening within the body. The docking rail adapter is repositionable relative to the adapter receiving opening of the docking rail and is configured to transport the lift unit into and out of the channel of the docking rail. The locking mechanism is repositionable between a locked position and an unlocked position, wherein the locking mechanism extends into the channel to block movement of a mounted lift unit toward the adapter receiving opening of the docking rail when in the locked position.

A lift unit docking system includes a docking rail, a docking rail adapter, and a locking mechanism. The docking rail is configured to provide ingress and egress of a lift unit to and from an overhead rail, and includes a body defining a channel and an adapter receiving opening within the body. The docking rail adapter is repositionable relative to the adapter receiving opening of the docking rail and is configured to transport the lift unit into and out of the channel of the docking rail. The locking mechanism is repositionable between a locked position and an unlocked position, wherein the locking mechanism extends into the channel to block movement of a mounted lift unit toward the adapter receiving opening of the docking rail when in the locked position.

A self-maintaining crane system including a bridge, a trolley, a hoist, and sensors for use within a hostile environment, such as a wastewater treatment facility, is presented. The bridge is movable along a pair of runway rails within the hostile environment. The trolley is movable between the runway rails. The hoist with extendable-retractable cable is movable with the trolley. Bridge sensors separately determine whether the bridge has engaged a bridge home position and a bridge end position. The bridge is movable away from the bridge home position and back toward the bridge end position. Trolley sensors separately determine whether the trolley has engaged a trolley home position and a trolley end position. The trolley is movable away from the trolley home position and back toward the trolley end position. Hoist sensors separately determine whether the cable has engaged a hoist home position and a hoist end position. The cable is extendable away from the hoist home position and retractable toward the hoist end position. Sensors facilitate automated movement of bridge, trolley, and cable so as to minimize functional impairment of the crane system by the hostile environment.

A self-maintaining crane system including a bridge, a trolley, a hoist, and sensors for use within a hostile environment, such as a wastewater treatment facility, is presented. The bridge is movable along a pair of runway rails within the hostile environment. The trolley is movable between the runway rails. The hoist with extendable-retractable cable is movable with the trolley. Bridge sensors separately determine whether the bridge has engaged a bridge home position and a bridge end position. The bridge is movable away from the bridge home position and back toward the bridge end position. Trolley sensors separately determine whether the trolley has engaged a trolley home position and a trolley end position. The trolley is movable away from the trolley home position and back toward the trolley end position. Hoist sensors separately determine whether the cable has engaged a hoist home position and a hoist end position. The cable is extendable away from the hoist home position and retractable toward the hoist end position. Sensors facilitate automated movement of bridge, trolley, and cable so as to minimize functional impairment of the crane system by the hostile environment.

A rope connector connects prepared ends of two rope segments, wherein said prepared ends each include a rope eye. The rope connector includes at least two complementary parts, each being configured with a shaped recess for receiving at least part of said prepared end of a respective rope segment. The complementary parts are detachably mountable to each other to establish a firm connection there between. A rope extension system is disclosed to include such rope connector, and a hoisting system employs such rope extension system.

The present invention addresses the problem of providing a crane capable of detecting a suspension location of a payload, in order to enable accurate positioning of a hook at the suspension location of the payload. This crane comprises: a freely derricking boom provided to a swivel; and a sub-hook block and a sub-hook suspendedly provided from the boom. The crane also comprises: a boom camera capable of imaging a payload that is to be carried by the crane; hook cameras capable of imaging the payload from different viewpoints than the boom camera; and a control device for controlling the crane. The control device acquires images obtained by imaging the payload with the boom camera and the hook cameras, runs image processing on the images, and calculates a suspension location of the payload.