EP2574588A1 - Câble-grue - Google Patents

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Publication number
EP2574588A1
EP2574588A1 EP12006002A EP12006002A EP2574588A1 EP 2574588 A1 EP2574588 A1 EP 2574588A1 EP 12006002 A EP12006002 A EP 12006002A EP 12006002 A EP12006002 A EP 12006002A EP 2574588 A1 EP2574588 A1 EP 2574588A1
Authority
EP
European Patent Office
Prior art keywords
cable
trolley
crane according
traction
cable crane
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.)
Withdrawn
Application number
EP12006002A
Other languages
German (de)
English (en)
Inventor
Rudolf Pretzier
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.)
Prisys GmbH
Original Assignee
Prisys GmbH
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 Prisys GmbH filed Critical Prisys GmbH
Publication of EP2574588A1 publication Critical patent/EP2574588A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C21/00—Cable cranes, i.e. comprising hoisting devices running on aerial cable-ways
    • B66C21/04—Cable cranes, i.e. comprising hoisting devices running on aerial cable-ways with cable-ways supported at one end or both ends on bodily movable framework, e.g. framework mounted on rail track

Definitions

  • the invention relates to a cable crane for use in steep terrain according to the preamble of claim 1.
  • Cable cranes are transport devices that are known in many embodiments.
  • a cable crane is composed of a drive station, a support cable on which a trolley is moved on rollers, and a pull rope, one end of which is connected to the trolley and the other end is wound, for example, on a winch drum is arranged in the drive station.
  • the traction cable end is guided over a deflection roller and attached thereto a load attachment harness.
  • the trolley can be stopped at any point and held by means of jaws on the carrying cable, then to lower the pull cable from the drive station, so that it can be pulled out to the load to be attached.
  • the pull rope After attaching the load, the pull rope is moved in reverse and the load is pulled up until the harness abuts the landing gear. Now the jaws of the chassis can be released and simultaneously the traction cable is clamped in the landing gear, whereupon the landing gear is driven to its next stop.
  • the load can be driven by its own weight to the valley-side crane end. In principle, however, it is also possible with such cable cranes to use a return rope in addition to the pull rope.
  • the basic function of the rope crane system thus includes a tensioned, firmly anchored suspension cable and a moving on this means of the traction cable trolley.
  • the trolley on the carrying cable must be fixable in any position in order to pull out the pull rope on can.
  • the pull rope is pulled down by the dead weight of the trolley and thus pretensioned accordingly. Now, if the trolley clamped to the support cable you can pull the pull cable out of the trolley on further extension of the cable crane system.
  • an additional rope a so-called auxiliary rope, which acts counter to or in the direction of the pull rope, is provided, this auxiliary rope in the trolley actuates a take-out drive, which unwinds the pull rope from the trolley.
  • This solution has the disadvantage that in addition to the support cable and the pull rope, the auxiliary rope must be provided as a further third rope.
  • the object of the invention is therefore to provide a Ausspul Anlagen for a cable crane to the hand, which simplifies the unwinding of the pull rope in the simplest possible way effectively.
  • a cable crane with the features of claim 1.
  • a rope crane for use in steep terrain with a trolley is given to the hand, by means of which it is movable on a support cable.
  • a pull rope is added, wherein the trolley via a clamping device on the support cable can be fixed, so that a load-receiving means on the at least one lifting roller running pull rope is movable up and down.
  • the traction cable can be fixed in the trolley via a clamping device, so that the trolley can be moved along the carrying cable by means of the clamped traction cable.
  • the pull cable can be guided in the trolley via at least one, preferably two deflection rollers or lifting rollers.
  • this is pressed according to another advantageous embodiment of the invention via pressure rollers to the at least one or in the case of several to the Ausspul workede pulley with fixed or load-dependent bias.
  • load-dependent preload of the pressure rollers the pressure rollers can be pressed on the current hydraulic pressure in the storage system. This has the advantage that the pressure rollers are pressed depending on the load only during unwinding or during charging.
  • the at least one deflection roller is connected via power transmission means, preferably chain drives, to the hydraulic motor.
  • the hydraulic storage system comprises a pump, which is also connected via power transmission means, preferably a chain drive, to the hydraulic motor.
  • Both the hydraulic motor and the pump can each be unlocked via freewheels.
  • a Switzerlandseilklemmvoroplasty and a suspension cable clamping device may be present, which are preferably controlled hydraulically driven by solenoid valves.
  • a control unit can be arranged in the trolley, which can be controlled via a radio remote control.
  • a generator can be integrated in the trolley or in one of its carrying stations, which generates electrical energy during the ascent and descent.
  • the cable crane preferably has a signal generator for generating an alarm signal in the event that disturbances, in particular disturbances of the trolley, must be reported to the operator.
  • FIG. 1 the essential part of a rope crane 10 is shown.
  • a trolley 14 On a carrying cable 12 moves a trolley 14.
  • the trolley 14 is guided over two support stations 16 along the support cable.
  • the respective support stations 16 impellers 18 (see. FIG. 2 ).
  • a pull rope 20 runs.
  • the trolley 14 For ascending and descending the trolley 14 is freely movable on the support cable 10 via its support stations 16, since one arranged in the support stations 16 supporting cable clamp 22 is open.
  • the pull cable 20, which can be secured in the trolley 14 via a traction cable clamp 24 arranged inside the trolley 14, can be pulled up during the uphill journey.
  • the trolley can run downwards due to its own weight, whereby the speed can be controlled via the traction cable.
  • the trolley 14 In order to be able to perform a lifting task with the cable crane, the trolley 14 is fixed to the supporting cable 12 in that the supporting cable clamps 22 are closed.
  • the traction cable 14 can now be actively unrolled after the Switzerlandseilklemme 24 is open.
  • Via a hydraulic drive 26 (FIG. FIG. 3 ), the pull rope 20 can now be driven out.
  • a load-receiving means at the end of the traction cable (not shown here) can be lowered.
  • To expel the pull rope 14 in the direction of arrow A according to FIG. 1 two pulleys or lifting rollers 28 via the hydraulic drive 26, with which they are connected by means of chain drives 30, driven.
  • the pull rope During the unwinding of the pull rope 20 from the trolley 14 of the ground station of the crane system (not shown here), the pull rope extended accordingly.
  • the traction cable with pressure rollers 32 is pressed on the take-off-side deflection roller or lifting roller 28.
  • the pressure rollers 32 are biased by the force of a tension spring 34.
  • the load-dependent bias of the pressure rollers can be pressed on the currently applied hydraulic pressure in the memory of the hydraulic drive. This has the advantage that the pressure rollers 32 are pressed depending on the load only during unwinding or during charging.
  • the two pulleys 28 are driven by the chain drive 30 from the hydraulic drive 26. If now larger cable lengths on the Ausspulkapazmaschine the storage system needed, the pull cable 20 can be further pulled out with muscle power. In this case, the hydraulic motor shaft of the hydraulic drive is released via freewheels (not shown here in detail), in order to provide no additional Ausspulwiderstand.
  • a pump 36 is thereby driven via the corresponding pulleys 28 and the chain drive 30, via which the hydraulic oil is pumped into a corresponding hydraulic accumulator for charging the hydraulic drive.
  • This hydraulic pump is released in the above-mentioned unwinding of the hawser 20 from the trolley 14 via freewheels, to make no additional resistance here.
  • the traction cable 20 is retracted by not shown here winds of the crane system by the trolley 14 with closed suspension cable clamps 22 and so can fix the fixed to the load receiving means not shown here, for example, tree trunks, towards the trolley.
  • the hydraulic pump 36 can be activated in order to feed the hydraulic oil consumed during the rewinding from the hydraulic storage system into this again.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP12006002A 2011-09-30 2012-08-22 Câble-grue Withdrawn EP2574588A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202011106249U DE202011106249U1 (de) 2011-09-30 2011-09-30 Seilkran

Publications (1)

Publication Number Publication Date
EP2574588A1 true EP2574588A1 (fr) 2013-04-03

Family

ID=46796243

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12006002A Withdrawn EP2574588A1 (fr) 2011-09-30 2012-08-22 Câble-grue

Country Status (2)

Country Link
EP (1) EP2574588A1 (fr)
DE (1) DE202011106249U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115947249A (zh) * 2023-01-03 2023-04-11 广西建工集团建筑机械制造有限责任公司 一种钢丝绳预紧机构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019045577A1 (fr) * 2017-09-04 2019-03-07 Ap Hydraulics Limited Perfectionnements apportés ou se rapportant à des chariots d'exploitation forestière
CN111924719B (zh) * 2020-07-31 2022-05-06 哈尔滨工业大学 一种用于fast缆索检测的被动行走检测装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127197A (en) * 1977-03-24 1978-11-28 Dumont Eston A Dual-purpose skyline log-yarding carriage
US4238038A (en) * 1978-10-10 1980-12-09 said Dana W. Meeks Log yarding skyline carriage
US4515281A (en) * 1982-07-21 1985-05-07 William Maki Radio-controlled skyline carriage
AT381686B (de) * 1983-12-07 1986-11-10 Hinteregger R Masch Hydraulischer seilausspulantrieb fuer einen seilkran
CH664145A5 (de) 1984-04-13 1988-02-15 Baco Ag Seilbahnen Und Aufzueg Seilkran.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127197A (en) * 1977-03-24 1978-11-28 Dumont Eston A Dual-purpose skyline log-yarding carriage
US4238038A (en) * 1978-10-10 1980-12-09 said Dana W. Meeks Log yarding skyline carriage
US4515281A (en) * 1982-07-21 1985-05-07 William Maki Radio-controlled skyline carriage
AT381686B (de) * 1983-12-07 1986-11-10 Hinteregger R Masch Hydraulischer seilausspulantrieb fuer einen seilkran
CH664145A5 (de) 1984-04-13 1988-02-15 Baco Ag Seilbahnen Und Aufzueg Seilkran.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115947249A (zh) * 2023-01-03 2023-04-11 广西建工集团建筑机械制造有限责任公司 一种钢丝绳预紧机构

Also Published As

Publication number Publication date
DE202011106249U1 (de) 2013-01-07

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