Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
  • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
  • B66C23/62—Constructional features or details
  • B66C23/72—Counterweights or supports for balancing lifting couples
  • B66C23/78—Supports, e.g. outriggers, for mobile cranes
  • B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
  • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
  • B66C23/62—Constructional features or details
  • B66C23/72—Counterweights or supports for balancing lifting couples
  • B66C23/78—Supports, e.g. outriggers, for mobile cranes

Definitions

• the invention relates to a support for a vehicle crane, in particular telescopic crane, to enlarge its effective footprint, with horizontally in the undercarriage horizontally and transversely to its longitudinal direction , which can be pushed out to the opposite side of the support beam box and accordingly equipped with opposite vehicle sides assigned support feet s nd.
• the standing moment of a mobile crane is determined by the weight and the size of the support base, since the loads are moved outside the standing area. These are based on the extension width of the support beams u and the mutual distance between the orderly support carrier boxes certain contact area of the cranes can no longer be significantly increased according to the level of development achieved here, unless other disadvantages, such as exceeding the permissible dimensions of the crane vehicle, are to be accepted.
• the object of the invention is to improve the support base of mobile cranes by improving the generic crane support in such a way that a further increase in the load capacities is possible without increasing the rake surface itself.
• each support carrier box is guided in a longitudinally displaceable manner in a support carrier box guide and can be pushed out of the support carrier box guide on opposite sides.
• this solution according to the invention offers two possibilities for crane operation.
• the crane can now be supported on one or the other side, transversely to the vehicle, with longer supports to cope with larger loads with corresponding overhangs by extending the support carrier boxes in the load direction.
• the support is increased in the load direction across the mobile crane.
• the center of gravity is shifted against the load direction transversely to the longitudinal axis of the crane.
• the support struts can remain more or less retracted in the support girder boxes in the direction opposite the load, especially when the crane is unloaded transversely to the truck. stuff is maintained on one of the two sides during crane operation.
• the additional weight of the load-bearing parts due to the increased load capacity can be compensated for by cheaper construction methods.
• a box-shaped design of the same area from the support box to the axis of rotation will be desirable, in contrast to the currently prevailing construction with a fork-shaped vehicle frame and i motor in the middle.
• the drive can be relocated to the superstructure or laterally to the longitudinal box of the undercarriage of the crane vehicle.
• the mutual distance between the support beam guides with de support beams in the vehicle longitudinal direction can be changed.
• the support can also be increased further in the longitudinal direction of the mobile crane, whereby the center of gravity can also be shifted in the direction of the longitudinal axis of the crane against the load direction.
• the support carrier box guides on the chassis frame can be arranged displaceably.
• at least one of the support carrier box guides is arranged on a telescopic part which can be pushed out from the undercarriage frame to the front and or to the rear.
• the entire undercarriage frame is preferably telescopic with its full cross section.
• the telescopic part is designed to be telescopic, and the telescopic part is extended with the support carrier guide and the support carrier box, larger loads can be moved in the direction transverse and longitudinally to the vehicle with the crane while the support carrier boxes are pushed out transversely to the chassis frame.
• the support carrier box can be pushed out in the support carrier box guide either to one side or to the other side by a drive unit.
• the drive units of several support bracket guides can be operated together depending on the load direction.
• This measure has the advantage that the position of the undercarriage frame can be changed within the support width specified by the distance between the support legs of the support beams if the respective load direction would lead to critical support conditions while maintaining the position, i.e. if there was no longer a sufficient support length.
• Such a change in position is possible in a particularly advantageous manner even during crane operation.
• crane operation can also be interrupted by appropriate monitoring elements in order to adjust the support by moving the support carrier boxes to the load direction that is to be started. Then crane operation can then to be resumed.
• the invention thereby also enables a continuous Lich or gradual side change of the load direction from a long side of the chassis to the other side. If, for example, the support carrier boxes are pushed out as far as possible on one side of the support carrier box guides, then on the vehicle side, z, which the further extension is directed at, a larger loads can be easily moved over a swivel angle of the crane boom of eg 130 °. If the crane jib swings further over one of the end faces of the undercarriage, the support girder boxes can be pushed in simultaneously or in sections by appropriate control of the drive units. The chassis frame resting on the support feet changes its position within the given support width between the support feet. This change can, if the load-bearing From swings from one long side of the undercarriage over one end face to the other long side is pivoted until the inserted support bracket box is completely pushed out of the other side of its support bracket guide.
• the control of the drive units can e.g. be designed as automatic tik that works depending on the Las direction. Since the angle of rotation of the crane design determines the load direction and, according to the invention, the support is increased in each case by moving the support boxes, the automatic system can be equipped with a measuring device registering the respective angle of rotation. The measuring device can e.g. be electronically linked to the automatic control of the rotary drive and the drive units.
• a drive unit provided for the support according to the invention for displacing a support carrier box can comprise an arrangement in which the support box guide has a cable drive with an drive wheel arranged outside the support box guide and on both sides and outside of the Stützzanka ⁇ least on the side portions of the support bracket box an ⁇ parent guide wheels, said cable wheel on the drive input and out the ⁇ guide wheels and each nchen- the rope ends with the sides of the box support beams ver ⁇ is prevented.
• the drive wheel can be actuated by controlled actuation means, e.g. Hydraulic motors or the like are driven. It is also conceivable to replace the drive wheel with working cylinders pulling alternately at the rope ends or to drive the drive wheel via a rack and pinion drive which can be actuated by means of a working cylinder.
• controlled actuation means e.g. Hydraulic motors or the like are driven. It is also conceivable to replace the drive wheel with working cylinders pulling alternately at the rope ends or to drive the drive wheel via a rack and pinion drive which can be actuated by means of a working cylinder.
• two hydraulic cylinders with piston rods which can be pushed out in opposite directions can be provided for pushing the support beams out of the support beam box.
• This arrangement can furthermore be used to push out the support carrier box.
• a blocking device which optionally inhibits the hydraulically effected extension movement of each of the support beams, is then provided. If the hydraulics for pushing out the support beams are switched on and at the same time the pushing out of the one support beam out of the support beam box is prevented while switching on the mechanical blocking device, for example, this has the consequence that when the two support beams are pushed out of the support beam box, the support beam box itself from the support beam guide in the direction of other support beam is pushed out.
• Embodiments of the crane support according to the invention are shown schematically in the drawing. Show it:
• FIG. 2 shows a vertical section through the representation according to FIG. 1
• FIG. 3 shows the crane support with extended support beams
• Fig. 5 shows a further embodiment of the crane support in plan view
• FIG. 6 is a top view of a crane support according to FIG. 5, in which the support support boxes are in a shifted position compared to FIG. 5.
• Fig. 1 shows a support beam box 1, which leads to a support beam box guide la can be pushed out g on both sides.
• the pushing out of the support beam box 1 a of the support beam box guide la takes place in the exemplary embodiment with the aid of a cable drive.
• the cable drive has a cable 10, d is guided over a drive wheel 11 arranged above the support carrier box guide la a and over side and outside half of the support carrier box 1 arranged deflection wheels 12a, 12b and its free ends, crossing one another, near the ends of the support carrier box associated with this sem.
• a support beam 2 is inserted into the support beam box 1 from the right, and a support beam 3 with a somewhat smaller transverse cut inserted.
• the support beams 2 and 3 each have a crane support 2a and 3a, each with a support foot.
• a support bearing 4 is slidably arranged in the support beam box 1.
• the support bracket 2 When the support bracket 2 is pushed out, it initially takes the support bearing 4 with it until it has reached a distance from the end of the support bracket box 1 (FIG. 3), which is sufficient for supporting the support bracket 3. Then the support beam 2, which is guided exclusively in the support beam box 1, is moved on until it has reached its support position. At the same time or subsequently, the support bracket 3 is pushed out to the other side of the vehicle. It is guided in the end of the support beam box 1, which is designed as a bearing 5 on this side, and at its rear end initially in the support beam 2. Then the support bearing 4 takes over its leadership. The insertion takes place in reverse.
• the support beams 2 and 3 are pushed out with the aid of two hydraulic cylinders 14 arranged in the support beam box 1 with piston rods 14a and 14b which can be pushed out on both sides and are connected to the crane supports 2a and 2b.
• the support beam box 1 can be pushed out to the right or left in the support beam guide 1a.
• Fig. 4 shows an example of an extension of the support beam box 1 to the right.
• the support beams 2 and 3 previously pulled out according to FIG. 3 preferably remain in the unchanged position.
• the support carrier box 1 is pushed out with the aid of the cable drive 10, 11, 12a and 12b.
• Fig. 5 shows a schematic plan view of the box shaped chassis frame 15 of a mobile crane.
• a first support carrier guide la is arranged with a support carrier box 1 'which can be moved therein.
• a telescopic part 16 can be pushed out to the front, and at the free end of the telescopic part 16, the second support carrier box guide 1b with the support carrier box 1 '* is arranged.
• the angular range 0- is arranged in the size of, for example, 130 °, in which, when the support carrier guide 16 is telescoped forward and support boxes pushed out on one side, support boxes 1 'and 1 *' have greater loads from one side of the vehicle after the Front of the vehicle can be moved in reverse.
• Fig. 6 shows once again a top view corresponding to Fig. 5, but the support carrier boxes are in egg ner to Fig. 5 different and in the direction of the double arrow also changeable shift position. Dabe are, also different from Fig. 5, the support carrier pushed out on both sides of the support carrier boxes, as shown for example in Fig. 3. Is the Fahrzeu supported on the supporting feet, the Fahrtechniksrahme 15 can by means of the then opposite the support beam boxes 1 and 1 - ⁇ Drainiebbeweglichen support bracket boxdatede la and lb its position within the limits of the Abstan between the support legs support width B countries changed. As a result, the crane can be operated on both long sides of the vehicle with larger loads, ie in all load directions.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Jib Cranes (AREA)

Applications Claiming Priority (4)

Publications (1)

Family

ID=25883842

Family Applications (1)

Country Status (2)

Cited By (2)

Families Citing this family (2)

Citations (8)

Family Cites Families (1)

• 1989
  • 1989-12-08 DE DE19893940798 patent/DE3940798A1/de active Granted
• 1990
  • 1990-08-04 WO PCT/DE1990/000602 patent/WO1991001937A1/de unknown

Patent Citations (8)

Non-Patent Citations (1)

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