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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D7/00—Steering linkage; Stub axles or their mountings
  • B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
  • B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
  • B62D7/142—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering specially adapted for particular vehicles, e.g. tractors, carts, earth-moving vehicles, trucks
  • B62D7/144—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering specially adapted for particular vehicles, e.g. tractors, carts, earth-moving vehicles, trucks for vehicles with more than two axles

Definitions

• Steering device for series-connected wheel sets of a chassis in particular a mobile crane
• the invention relates to a common steering device for the wheel sets of a trolley, in particular a trolley for a mobile crane, with the features of the preamble of claim 1.
• chassis which have support beams which can be pivoted symmetrically in relation to the longitudinal axis of the vehicle and are provided with a number of wheel sets
• the lever is generally provided with a plurality of articulation points assigned to the individual positions, into which the articulated articulation points of the steering linkage must be repositioned.
• the invention is therefore based on the object in such a case by simplifying the - 2 -
• the primary advantage of the invention is that there is no need for repositioning, conversion work or an exchange of parts belonging to the steering linkage, the safety for the operating team when converting the wheel sets to the respective adjustment of the support beams is considerably improved, and the adjustment process becomes independent is made possible.
• Fig. 1 shows a support beam of a vehicle crane in three different
• Fig. 2 shows the practical implementation of a
• Fig. 3 shows a lever arrangement of the embodiment according to FIG. 2 in angled view
• Fig. 4 is a view in the direction of
• Arrow IV in Fig. 3, 5 shows another embodiment of a lever arrangement in a vertical section
• FIG. 6 shows a section along the line VI-VI in FIG. 5.
• two support beams 2 are each articulated in a bearing 3 and arranged (in pairs) symmetrically to one another. 1, for the sake of simplicity, only one of the two support beams 2 is shown, with a the position of the support beams 2 oriented in the direction of travel, b a position pivoted outwards by 10 from the longitudinal axis of the vehicle and c a position pivoted outwards by approximately 45 shows.
• the spread angle of the two symmetrical support beams 2 is thus twice as large.
• Each of the two support brackets 2 is provided with wheel sets 5 which can each be pivoted about a vertical axis of rotation 4, the steering levers 6 being arranged in such a way that, in position a, they point backwards as do their associated chassis 5.
• the articulation points adjacent intermediate lever 1 are each connected to one another via a rod 12, while the articulation point of the wheel set 5 adjoining the underframe 1 is connected to a hydraulic steering cylinder 13 which is arranged on the underframe 1 in a vertical axis of rotation 15 "" 4 -
• the wheel sets are shown in the positions a to c only in the straight-ahead driving position, their wheel axes 16 running parallel to one another.
• the cylinder 13 is extended or retracted depending on the desired steering direction.
• each wheel set 5 ' has four coaxial wheels, which are arranged on both sides of their vertical axis of rotation 4'.
• the intermediate levers 10 ' which can be pivoted about the axes of rotation 4' in the same way as in the previous exemplary embodiment, the longitudinal axis 17 of the vehicle faces and symmetrically further lever plates 18, 19 and 20 are fastened, to which, in addition to the steering linkage, there is also a steering auxiliary cylinder 21 is articulated.
• the steering cylinders 13 'pivotally attached to the underframe 1' are with their piston rods 14 'j ' at the middle - 5 ⁇
• Articulated lever disk 19 which has articulation points 22, 23 for the rods 12 'leading to the lever disks 18 and 20. With regard to their articulation points, the lever disks are designed in such a way that a kinematically favorable steering behavior is achieved.
• the steering auxiliary cylinders 21, which are additionally used for the same purpose, are articulated at their other ends to the support bracket 2 ', not shown in FIG. 2.
• the steering levers 6 1 are designed as double levers encompassing the intermediate levers 10 'at the top and bottom.
• the lever 6 ' is firmly connected to the bogie of the associated wheel set, which is mounted on an axle stub flanged to the support frame 2', which can be recognized by the flange connection 24.
• the intermediate lever 10 ' has three notches 7', 8 1 and 9 1 as position elements, which expand radially outwards in relation to the wheel set axis of rotation 4 '.
• the radius of the position elements is smaller than that of the steering lever.
• both parts are arranged approximately opposite one another.
• the steering lever 6 has an articulation point 11" approximately opposite a downward-facing hook-shaped projection 28 which engages in a slot-like curved groove 29 of the loose intermediate lever 30 mounted around the steering lever 6 '.
• the intermediate lever 6 is fastened to a rotary frame 31, which is pivotably mounted on an axle stub 32 flanged to the support bracket 2 about the rotary axis 4.
• the device according to this exemplary embodiment is designed only for two pivot positions of the support bracket , the engagement taking place automatically in that the cam 28 strikes one of the end stops 33 or 34, which forms the groove 29, after which a wedge-shaped latch 35 wedges the cam 28 in its position by an actuator 36 .
• the wedge 35 is divided in its latching position, the groove 29 into two equal portions which are completely filled by the cam 28, respectively.
• the pivot angle is ⁇ in this embodiment according to the Dar ⁇ position of FIG. 6 approximately 40.
• the intermediate lever it is also possible, instead of the intermediate lever, to provide the steering lever with the position elements assigned to the support bracket positions. These position elements can also be distributed over both levers.
• the steering device can thus be easily adapted to the requirements. - 7 -

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
• Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
• Jib Cranes (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6242174

Family Applications (1)

Country Status (4)

Families Citing this family (2)

Citations (4)

Family Cites Families (2)

• 1984
  • 1984-08-02 DE DE19843428470 patent/DE3428470A1/de active Granted
• 1985
  • 1985-07-25 GB GB08607819A patent/GB2175857B/en not_active Expired
  • 1985-07-25 JP JP60503641A patent/JPS61502881A/ja active Pending
  • 1985-07-25 WO PCT/EP1985/000372 patent/WO1986001188A1/de unknown

Patent Citations (4)

Also Published As

Similar Documents

Legal Events