EP0199116B1 - Schubstapler - Google Patents

Schubstapler Download PDF

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Publication number
EP0199116B1
EP0199116B1 EP86103979A EP86103979A EP0199116B1 EP 0199116 B1 EP0199116 B1 EP 0199116B1 EP 86103979 A EP86103979 A EP 86103979A EP 86103979 A EP86103979 A EP 86103979A EP 0199116 B1 EP0199116 B1 EP 0199116B1
Authority
EP
European Patent Office
Prior art keywords
lifting unit
lever
frame
push frame
lifting mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP86103979A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0199116A1 (de
Inventor
Helmut Alber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wagner Foerdertechnik GmbH and Co KG
Original Assignee
Wagner Foerdertechnik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wagner Foerdertechnik GmbH and Co KG filed Critical Wagner Foerdertechnik GmbH and Co KG
Priority to AT86103979T priority Critical patent/ATE34555T1/de
Publication of EP0199116A1 publication Critical patent/EP0199116A1/de
Application granted granted Critical
Publication of EP0199116B1 publication Critical patent/EP0199116B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/08—Masts; Guides; Chains
    • B66F9/082—Masts; Guides; Chains inclinable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/08—Masts; Guides; Chains
    • B66F9/10—Masts; Guides; Chains movable in a horizontal direction relative to truck

Definitions

  • the invention relates to a push truck with a double-arm lifting mechanism that is tiltably mounted in a push frame.
  • a thrust member in particular a hydraulic cylinder, between the vehicle frame and the thrust frame and a tilting member also formed as a hydraulic cylinder are arranged between the latter and the lower lever arm of the lifting mechanism.
  • the aim is to keep the length of the truck as short as possible in order to achieve a narrow aisle width in the warehouse.
  • the width of the aisle is determined by the length of the vehicle body plus the load length and a safety distance of 2 x 100 mm.
  • the pivotal connection of the thrust member to the push frame takes place via one end of a double-armed, pivotally mounted cross lever on the push frame, the other end of which is pivotally attached to the lower lever arm of the lifting mechanism. If, in this construction, with a fixed thrust member, the lifting mechanism is inclined, then the lifting mechanism takes the end of the transverse lever connected to it and pivots it about its push frame axis. The other end of the lever arm presses off on the fixed pushing element and inevitably moves the pushing frame in the extending direction, so that the distance between the lifting mechanism and the vehicle frame increases or its minimum size is maintained.
  • the articulation of the cross lever on the lifting mechanism takes place at the connection point between the lifting mechanism and the tilt link, so that an additional pivot axis is saved.
  • this pivot axis is expedient to arrange this pivot axis on a coupling rod connected to the frame. This is preferably longitudinally adjustable in order to be able to shift the position of the pivot axis, in particular to compensate for manufacturing tolerances.
  • the extent of the longitudinal adjustment of the push frame when tilting the lifting mechanism depends on the length of the two lever arms of the cross lever. A constant safety distance is obtained when both lever arms are of the same length. It is also advantageous if the height distance of the swivel axis of the lifting mechanism from the connection point with the tilting link is made the same size as the distance from this axis of rotation to the highest, most protruding edge of the vehicle.
  • a push frame 3 On the vehicle frame 1 of the push stacker, a push frame 3 is mounted so as to be longitudinally displaceable via rollers 2, the movements of which are carried out via the piston 4 of a thrust member designed as a hydraulic cylinder 5.
  • the push frame 3 is provided at its front free end on both sides with vertically arranged supports 6, on which the lifting mechanism 7 is mounted tiltable about the axis 8.
  • the tilt angle is set by the piston 9 of a tilt member, which is also designed as a hydraulic cylinder 10.
  • the load suspension device 11 is arranged on the lifting mechanism 7 so that it can be raised and lowered.
  • the vehicle body consists of the driver's seat 12, which is only indicated schematically, and the battery compartment 13 in front of it.
  • the length L 2 of the vehicle body is determined from the length A of the driver's seat 12, the length B of the battery compartment 13 and the width D of the lifting mechanism 7 and the safety distance C, between the hoist 7 and the battery compartment 13. Since the length of the load suspension device 11, and thus also of the vehicle frame 1, is determined by the size of the load to be picked up and is therefore not changeable, a narrow aisle width must be achieved in Bear the length L 2 as short as possible.
  • the safety distance C between the lifting mechanism 7 and the battery space 13 changes in the known embodiments when the lifting mechanism 7 is inclined towards the vehicle body. It must therefore be kept so large that the prescribed dimension is maintained even with an inclined lifting mechanism 7. As a result, it will usually be larger than necessary when the hoist 7 is vertical.
  • the thrust member 4, 5 is connected on the one hand via a bearing block 14 to the vehicle frame 1 and on the other hand via a double-armed transverse lifting device 15 to the lifting mechanism 7, specifically via a bearing block 16.
  • the piston of the tilt member 9, 10 is also articulated, the cylinder 10 of which is connected to the push frame 3 via a bearing block 17.
  • the cross lever 15 is pivotally mounted about the axis 18, which in turn is connected to the push frame 3 via the coupling rod 19 and the bearing block 20.
  • the tilting member 9, 10 is fixed independently of the set tilting angle of the lifting mechanism 7 and the piston 4 of the pushing member 4, 5 is shifted, then the pushing frame 3 moves to the right or left in the plane of the drawing.
  • the push element 4, 5 is fixed, the tilt angle of the lifting mechanism 7 is changed relative to the vertical position according to FIG. 1, then the bearing block 16 moves together with the piston 9, as shown in FIG. 3, in the drawing plane to the right, so that the cross lever 15 is pivoted counterclockwise around the connecting axis 23 on the thrust member 4, 5. Since the push element 4, 5 is fixed, the push frame 3 is moved to the right in the plane of the drawing via the coupling rod 19.
  • the inclination of the lifting mechanism 7 would in itself reduce the safety distance C, but this reduction is in turn compensated for by the corresponding advance of the push frame 3.
  • the safety distance C can be limited to the prescribed minimum with the hoist 7 standing vertically, since this no longer decreases even when the hoist 7 is inclined.
  • the coupling rod 19 is provided with a longitudinal adjustment device 21, so that the pivot axis 18 can thus be shifted to the right or left in the plane of the drawing.
  • the size of the path of the push frame 3 at an inclination of the lifting mechanism 7 results from the ratio of the two lever arms of the cross lever 15. This is 1: 1 in the example shown.
  • a coupling rod 19 has another advantage over a fixed pivot axis 18.
  • the pivot axis 18 can track the movement by means of the pivotable coupling rod 19.
  • the inventive use of the cross lever 15 also results in greater security in the event of a possible breakage of the piston rod 9 of the tilting member 9.10.
  • the lifting mechanism 7 is also held in such a case by the fixed pivot axis 18 and the thrust member 4, 5. This prevents the hoist from tipping back completely.
  • the transverse lever 15 can be designed to be longitudinally adjustable according to a further feature of the invention, not shown in the drawing.
  • This longitudinal adjustment is expediently provided in the lever arm of the transverse lever 15, which has the pivot connection 23 with the thrust member 4, 5. By extending this. Because the lever arm increases the feed, a shortening would be necessary for the other lever arm.
  • the lengthening and shortening of the cross lever 15 can be controlled by the hydraulics of the truck.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP86103979A 1985-04-16 1986-03-22 Schubstapler Expired EP0199116B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86103979T ATE34555T1 (de) 1985-04-16 1986-03-22 Schubstapler.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853513547 DE3513547A1 (de) 1985-04-16 1985-04-16 Schubstapler
DE3513547 1985-04-16

Publications (2)

Publication Number Publication Date
EP0199116A1 EP0199116A1 (de) 1986-10-29
EP0199116B1 true EP0199116B1 (de) 1988-05-25

Family

ID=6268125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103979A Expired EP0199116B1 (de) 1985-04-16 1986-03-22 Schubstapler

Country Status (3)

Country Link
EP (1) EP0199116B1 (enrdf_load_stackoverflow)
AT (1) ATE34555T1 (enrdf_load_stackoverflow)
DE (1) DE3513547A1 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2857344B1 (en) * 2013-10-07 2016-04-06 Hyster-Yale Group, Inc. Reach truck
CN112919373A (zh) * 2021-03-15 2021-06-08 山东省科学院自动化研究所 一种物流搬运车及方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1280910A (fr) * 1961-01-26 1962-01-08 Lansing Bagnall Ltd Perfectionnements aux chariots industriels
US3151755A (en) * 1961-05-31 1964-10-06 Yale & Towne Inc Scissor lever with a pivotal link for shifting and tilting the mast on an industriallift truck
US3259257A (en) * 1964-06-12 1966-07-05 Baldwin Lima Hamilton Corp Multiple-purpose fork lift truck
GB1218553A (en) * 1967-08-04 1971-01-06 Matbro Ltd Improvements in fork lift trucks
GB1429478A (en) * 1972-10-03 1976-03-24 Ransomes Sims & Jefferies Ltd Reach trucks
GB2092551A (en) * 1981-02-07 1982-08-18 Coventry Climax Ltd Sideloading industrial truck

Also Published As

Publication number Publication date
DE3513547C2 (enrdf_load_stackoverflow) 1989-06-01
DE3513547A1 (de) 1986-10-16
ATE34555T1 (de) 1988-06-15
EP0199116A1 (de) 1986-10-29

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