A telescopic jib bracing unit for a mobile crane includes a holding frame which is embodied for fastening to the telescopic jib of the mobile crane and exhibits an open cross-section, the cross-sectional opening of which enables the jib to be retracted into the holding frame, and two bracing supports which are connected by the holding frame to form a structural unit. Two frame parts which form the open cross-section of the holding frame are coupled to each other via a coupling point such that they can be moved with respect to each other. A bracing unit transport system, a mobile crane and a fitting method are also provided.

A mobile crane drive assembly axle includes mutually independent suspensions of wheel carriers arranged on both sides of the drive assembly frame of the mobile crane. The suspensions each include at least one transverse control arm which couples the wheel carrier onto the drive assembly frame and is connected to the drive assembly frame such that it can be rotated about an axis which extends substantially parallel to the longitudinal axis of the drive assembly frame.

A crane includes a jib which is mounted on the crane structure so as to be rotatable about a bearing point, a counterweight arrangement which can be positioned variably in relation to the bearing point, and a hoisting cable which runs out from a hoisting winch and is guided via the jib. A counterweight adjustment device, which is coupled to the counterweight arrangement, includes a lever element mounted rotatably about a pivot point, a hoisting cable guide arranged in the course of the hoisting cable between the hoisting winch and an upper jib section, with a first deflecting pulley arrangement mounted on the jib and a second deflecting pulley arrangement mounted on the lever element, wherein the hoisting cable is guided in an alternating manner via the first and the second deflecting pulley arrangement, and a coupling element acting on the lever element and connected to the counterweight arrangement.

A working machine with a crawler includes a lower traveling body having a pair of crawlers, an upper turning body, an extension beam installed rotatably to be parallel in a longitudinal direction of the crawler, a fitting portion opened in a side frame of the crawler, a fixing pin fixing the extension beam to the side frame, a fixing pin insertion hole, a fixing pin fitting hole, and a reinforcement rib, in which the extension beam extends to be inserted into the fitting portion, and the reinforcement rib is provided at a center portion of an opening of the fitting portion, and the fixing pin fitting hole is disposed at a position which is deviated from an imaginary center line extending along a longitudinal direction of the fitting portion from the center portion and does not interfere with the reinforcement rib.

A fire apparatus includes a chassis, a body assembly coupled to the chassis, a front cabin coupled to a front end of the chassis forward of the body assembly, a front axle coupled to the chassis, at least one rear axle coupled to the chassis, a ladder assembly having a proximal end that is coupled to the chassis between the front axle and the at least one rear axle, and a stability system. The stability system includes a pair of front downriggers coupled to the front end of the chassis, a pair of rear downriggers coupled to the rear end of the chassis rearward of the at least one rear axle, and an outrigger assembly coupled to the chassis between the front axle and the at least one rear axle. The outrigger assembly includes a pair of outriggers that are selectively extendable laterally from the body assembly at an angle.

An electrically driven winch device includes a winch drum, a plurality of axial-gap electric motors, and a drive shaft. The winch drum rotates around a drum axis in order to wind or unwind a work rope. The plurality of electric motors are electric motors configured to drive the winch drum to rotate, and are each provided with a stator, and rotors which rotate around a rotation axis and are disposed at an axial distance from the stator. The drive shaft is disposed coaxially with the drum axis and serially connects the rotors of the plurality of electric motors on the rotation axis.

A cabinet includes a crane including an attachment board secured to the cabinet; a receptacle on the attachment board and including threaded holes; a hollow member on the attachment board; an outrigger on bottom of the attachment board and including a slot, a rear sliding tube, a caster mounted to a bottom of a rear end of the sliding tube, and a rod releasably secured to the sliding tube and in the slot; a boom having one end pivotably secured to the hollow member and including threaded holes, an extension extending from the other end and threadedly secured to the boom, a chain at an end of the extension, and two guard members a front portion of the boom; and an adjustable boom hoist having one end releasably secured to the threaded hole of the boom and the other end releasably secured to the threaded hole of the receptacle.

A system for transporting a crane includes a crane which has a boom which is connected to a base, the base has a front end and an opposite rear end. A coupler is connected between a tractor and the front end of the base. A dolly is connected to the rear end of the base. In an embodiment the dolly includes a rear cradle which is shaped and dimensioned to receive and support the boom during transporting. In another embodiment the coupler includes a front cradle which is shaped and dimensioned to receive and support the boom during transporting.

An operator cabin may include a frame; a seat assembly supported by the frame; and one or more operator controls to control one or more components of a pipelayer machine, the operator controls being supported by the frame. The frame includes a front surface; a rear surface opposite the front surface; a first lateral surface; and a second lateral surface opposite the first lateral surface. The front surface may comprise a first front support structure and a second front support structure opposite the first front support structure. The rear surface may comprise a first rear support structure and a second rear support structure opposite the first rear support structure. A first distance between the first rear support structure and the second rear support structure may exceed a second distance between the first front support structure and the second front support structure.

A cabinet includes a crane including an attachment board secured to the cabinet; a receptacle on the attachment board and including threaded holes; a hollow member on the attachment board; an outrigger on bottom of the attachment board and including a slot, a rear sliding tube, a caster mounted to a bottom of a rear end of the sliding tube, and a rod releasably secured to the sliding tube and in the slot; a boom having one end pivotably secured to the hollow member and including threaded holes, an extension extending from the other end and threadedly secured to the boom, a chain at an end of the extension, and two guard members a front portion of the boom; and an adjustable boom hoist having one end releasably secured to the threaded hole of the boom and the other end releasably secured to the threaded hole of the receptacle.