This crane is provided with: a operable functional part that is supported on a pair of lower bases; a driving device; a detection unit that detects information about the attitude of the operable functional part; a target signal generation unit that generates a target signal regarding the moving direction and the moving speed of a suspended load on the basis of information about an operation input for instructing the moving direction and the moving speed of the suspended load; a filter unit that generates a filtering target signal by filtering the target signal; a control signal generation unit that generates a speed control signal for controlling the operation speed of the driving device on the basis of the information about the attitude and the filtering target signal; and a control unit that controls the driving device on the basis of the speed control signal.

A method for open-loop and/or closed-loop control of a vehicle-mounted lifting gear, which lifting gear comprises an articulated crane arm system having a crane and a crane base, includes taking into account a determined position of at least one point of the crane arm system. A deformation of the crane arm system arising under the action of dynamic and/or static forces is taken into account when determining the position of the at least one point. An oblique position of the lifting gear resulting from an inclination of the crane base relative to a predetermined or predeterminable direction in space is determined and taken into account when determining the position of the at least one point.

A solid mast raiser system is disclosed herein. The solid mast raiser system may include a slot configured to house a mast. Further, the slot may be further configured to be inserted in to a predrilled bore in the ground. Further, a length of the slot may be matched to a depth of the predrilled bore in the ground. Further, the solid mast raiser system may include a stanchion configured to be attached to the slot. Further, the stanchion may be concentrically aligned with the slot. Further, the stanchion may rest upon a cable. Further, the solid mast raiser system may include a launcher coupled to the stanchion through a cable. Further, the launcher may be configured to raise and retract the stanchion. Further, the launcher may be configured to be affixed to the ground. Further, the launcher may comprise a first hole concentrically aligned with the slot.

The present invention relates to a telescopic boom having a coupling section at whose lower shell at least one luffing cylinder mount, in particular a bolt mount, is centrally provided for fastening at least one luffing cylinder, wherein at least two closed sheet metal box structures for the load transmission from the luffing cylinder mount into the structure of the telescopic boom are provided at the support metal sheets of the luffing cylinder mount.

A telescoping extendable boom and a foldable telescoping extendable boom for transporting an item, are disclosed. The foldable telescoping extendable boom having tubular elements (12) and (14) and (15, 17, 18, 19) and (20) each arranged with a longitudinally extending track (25, 29) inside the tubular element. Each longitudinally extending track (25, 29) supports a single shuttle (26) and (30) respectively, internally inside its tubular element (17) and (15), respectively, for movement therealong. Each shuttle (26) and (30) is equipped with a clamp (27) and (30) to selectively clamp the item (298). The longitudinally extending tracks (25, 29) of immediately connecting telescoping tubular elements (17) and (15) are located opposite each other. The inner tubular elements inside said telescoping extendable boom are arranged at their near ends to allow their shuttles to access shuttles of outer tubular elements to enable the clamps (27) and (31) thereof to transfer a said item (298) therebetween.

The present invention relates to a telescopic device of single-cylinder latch type and a crane. The telescopic device of single-cylinder latch type is applied to a telescopic boom system and includes: a telescopic cylinder, for driving telescopic boom sections of the telescopic boom system to execute a telescopic action relative to a basic boom section; double boom pin structures, arranged on both sides of the tails of the telescopic boom sections to lock and unlock the telescopic boom sections; an boom pin pulling and plugging mechanism, arranged on the cylinder barrel of the telescopic cylinder to execute pulling and plugging operations on the double boom pin structures; and a cylinder pin structure and a cylinder pin cylinder, both arranged on the cylinder barrel of the telescopic cylinder and to lock and unlock the cylinder barrel of the telescopic cylinder and the telescopic boom sections. In the present invention, the double boom pin structures are arranged on both sides of the tails of the telescopic boom sections, compared with the existing upper boom pin solution, the double boom pin structures in the present invention are arranged on both sides of the telescopic boom sections, so that the stress is more uniform compared with a structure which is singly arranged on the upper side of a telescopic boom, and the influence of flexural deformation of a telescopic boom on the position of a pin hole and the stress of an boom pin is reduced.

A telescopic side arm for a refuse vehicle has an inner and outer boom. A mounting assembly secures the outer boom with a refuse vehicle. A plurality of bearing pads is positioned between the inner and outer booms to provide smooth movement between the inner and outer booms. A plurality of shims is associated with the bearing pads to assure a tight fit between the inner and outer booms.

An extendable needle davit assembly has an extendable beam comprising a fixed beam portion, and a telescopic beam portion slidably receivable within a distal end of the fixed beam portion. An intermediate lateral bracing frame holds the extendable beam at an angle. The fixed beam portion is a single-piece construction, and a proximal end of the fixed beam portion is anchored. An upper end of the bracing frame is attached to a distal attachment point of the fixed beam portion, such that a distal portion of the fixed beam portion extends beyond the bracing frame. A lower portion of the bracing frame is attached to a proximal attachment point of the fixed beam portion by means of a rear brace.

The invention relates to a cylinder head body, a single cylinder bolt system and a crane, wherein, the cylinder head body comprises at least two branch bodies of cylinder head body, a cooperative positioning structure and a fixed connection structure are provided between two adjacent branch bodies of cylinder head body of the at least two branch bodies of cylinder head body, the branch body of cylinder head body has a cylindrical branch body structure, the cylindrical branch body structures of the at least two branch bodies of cylinder head body are cooperatively positioned by means of the cooperative positioning structure and are detachably connected by means of the fixed connection structure to form a barrel. The cylinder head body is composed of at least two branch bodies of cylinder head body in a dismountable way, which are cooperatively positioned and detachably connected by the cooperative positioning structure and the fixed connection structure, respectively, such that the cylinder head body may be dismounted into branch body structures during assembling, assembling manner thereof is not restricted by traditional assembling sequence, thereby improving the assembling efficiency and production efficiency. Moreover, the branch body structure of the cylinder had body is easy to dismount and maintain, which saves maintenance cost.

An aerial work platform is provided with a people-holding cage suitable to be moved by a lifting unit provided with a telescopic arm, which has four section bars that are movable between respective extracted positions and respective retracted positions under the thrust of an actuator cylinder and of two rope operating systems fitted inside the telescopic arm, and is provided with at least one pipe fitted inside the telescopic arm to feed an operating fluid along the telescopic arm.