EP3565778A1 - Kran mit hubseillastabhängigem lastmomentenausgleich - Google Patents
Kran mit hubseillastabhängigem lastmomentenausgleichInfo
- Publication number
- EP3565778A1 EP3565778A1 EP17823164.3A EP17823164A EP3565778A1 EP 3565778 A1 EP3565778 A1 EP 3565778A1 EP 17823164 A EP17823164 A EP 17823164A EP 3565778 A1 EP3565778 A1 EP 3565778A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- crane
- boom
- counterweight
- assembly
- superstructure
- 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- Withdrawn
Links
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
- B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
- B66C23/76—Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib
-
- 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
- B66C23/06—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 with jibs mounted for jibbing or luffing movements
- B66C23/08—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 with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths
- B66C23/10—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 with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths the paths being substantially horizontal; Level-luffing jib-cranes
-
- 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
- B66C23/18—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 specially adapted for use in particular purposes
- B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/42—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with jibs of adjustable configuration, e.g. foldable
-
- 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
- B66C23/18—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 specially adapted for use in particular purposes
- B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/50—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes mounted on railway vehicles, e.g. breakdown cranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
- B66C2700/0307—Cranes in which it is essential that the load is moving horizontally during the luffing movement of the arm or jib
- B66C2700/0314—Cranes in which it is essential that the load is moving horizontally during the luffing movement of the arm or jib in combination with the movement of the counterweight
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
- B66C2700/0321—Travelling cranes
- B66C2700/0357—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks
- B66C2700/0378—Construction details related to the travelling, to the supporting of the crane or to the blocking of the axles; Outriggers; Coupling of the travelling mechamism to the crane mechanism
Definitions
- the present invention relates to a crane, in particular a mobile crane with a load torque compensation, which varies depending on the Hubseillast the position of the crane counterweights and thus provides a lifting rope load-dependent load torque compensation.
- a load torque compensation which varies depending on the Hubseillast the position of the crane counterweights and thus provides a lifting rope load-dependent load torque compensation.
- the mechanical principles of the transmission effect with those of a mechanical Balanciers according to the invention set in operative connection.
- Cranes with a variable counterweight position are already known from DE 198 57 779 and have the advantage over cranes with a fixed counterweight arrangement that the torque generated by the counterweights can be changed at any time and with relatively little effort. For example, load torque compensation in the desired height can also be provided flexibly during crane operation.
- a problem already known in cranes with a fixed counterweight arrangement continues to apply to these cranes as well: in particular, the sudden lifting and lowering of relatively large loads leads to abrupt changes in the counter-torque provided by the counterweights, which are reacted to in a very short time got to.
- the crane according to the invention comprises a jib rotatably mounted on the crane structure about a bearing point, a counterbalancing arrangement variably positionable with respect to the bearing point, a hoisting rope emanating from a hoist winch and guided by the jib, and a counterweight adjusting device coupled to the counterweight arrangement for variably positioning the counterweight arrangement in dependence on Hubseillast.
- the counterweight adjusting device here comprises a lever element rotatably mounted about a pivot point arranged at the rear to the boom on the crane structure,
- a mechanism is provided by means of which the hoist rope of the crane is integrated into the device for adjusting the counterweight position.
- a first essential element of the counterweight adjustment device according to the invention is formed by a lever rotatably mounted on the crane, hereinafter also referred to as a balancer, from whose pivot point two lever arms extend. While one of the lever arms is coupled to the counterweight assembly, the other lever arm is coupled to the boom via at least one cable loop formed by the hoist rope of the crane.
- one or more cable rollers are arranged both on the boom and on the lever arm of the balancer, over which the hoist rope emanating from the hoist winch of the crane is guided alternately, in order to be subsequently guided further over the crane jib tip.
- the boom is rotatably mounted on the crane structure, so that the distance between the pulleys on the boom and the pulleys on the balancers can be varied by applying a load to the hoisting rope.
- This caused by the Hubseillast deflection of the balancer is inventively transferred to the counterweight arrangement such that an increase in the load on the hoist leads to a substantially rearward positional change of the counterweights.
- a reduction in the hoist rope load causes a substantially forward position change of the counterweights.
- the present invention thus enables by mechanical means a fully automatic adjustment of the load torque compensation to the currently exerted by the load on the hoist rope force.
- the intrinsic friction and inertia in the mechanics reduce the swinging of the system, up to the avoidance of dynamic
- the counterweight adjustment device according to the invention can be used, on the one hand, in mobile cranes which have a crane superstructure rotatably mounted on a crane undercarriage, and in which the boom is rotatably mounted on the crane superstructure about a bearing point.
- the counterweight adjusting device according to the invention can also be used in stationary or semi-stationary cranes, for example in platform cranes or ring-lift cranes.
- the lever element or the Balancier is rotatably mounted on a Abspannbock (A-Bock), over which the crane boom is finally exhausted.
- A-Bock Abspannbock
- the bracing between the A-Bock and the boom may be non-variable in length such that the boom and A-Bock form a fixed angle therebetween.
- the engagement and disengagement of the boom thus takes place with simultaneous rotation of the A-block relative to the crane structure.
- the lever element or the balancer can also be articulated about a pivot point which is fixed relative to the crane structure, for example on a console belonging to the crane uppercarriage.
- the lever element can have mutually arranged lever arms which are coupled to the deflection roller arrangement for the hoisting cable or to the counterweight arrangement.
- These lever arms can have an arbitrary length ratio to each other, wherein the lever arms can extend starting from the common pivot point at any angle to each other.
- the lever element is formed by a toothed wheel which engages on opposite sides in two toothed racks which can be displaced in translation and parallel to one another in turn coupled to the pulley assembly or to the counterweight assembly are.
- lever element of the present invention is not limited to a simple balancer but also includes equivalent mechanical transmission and transmission elements.
- the coupling element which couples the counterweight arrangement with the lever element is advantageously designed such that it can transmit compressive forces between the lever element and the counterweight arrangement, wherein it is further preferably designed as a pendulum support.
- the crane according to the invention can have a device by means of which the counterweight arrangement during forward retraction and rearward extension is guided on the crane structure, in particular on the crane superstructure.
- the guide device can have a rail guided on rollers of the crane structure, whose rear end is coupled to the counterweight arrangement.
- this guide rail may also have a curvature, so that in the rearward extension of the counterweight arrangement, this is additionally raised in the vertical direction and thereby causes an additional change in the potential energy of the counterweight arrangement.
- a system-inherent energy storage is created whose energy to swing back the counterweight assembly can be used to a location that is closer to the center of rotation of the crane superstructure.
- the friction pairings in the mechanism could be designed such that these system-inherent friction, in conjunction with system-inherent inertia, influence the system swinging up to the point of avoiding dynamic oscillations between the lifting cable deflections, the deflection displacement and the GGW Ausstellmechanismus, or a tainted leadership latter.
- FIG. 1 shows a first embodiment of a mobile crane according to the invention
- Figure 2 shows a second embodiment of an inventive
- FIG. 3 shows a first embodiment of a stationary crane according to the invention.
- FIG. 4 shows a second embodiment of a stationary crane according to the invention.
- the mobile crane according to a first embodiment, which can be seen in FIG. 1, has a crane undercarriage 17 with a chain drive, wherein a crane superstructure 1 is rotatably mounted about a vertical axis on the crane undercarriage 17.
- a crane superstructure 1 On the superstructure 1 include a hoist winch 5 and a pull-in winch 15 are arranged, from which a hoisting rope
- a lattice boom 3 is rotatably connected to the crane uppercarriage 1 via the bearing point 2 so as to descend (the angle ⁇ included between the boom 3 and a horizontal plane passing through the crane uppercarriage 1) is reduced and flipped ( ⁇ is increased) can.
- the rocking and luffing of the boom 3 is effected in the embodiment shown in Figure 1 by the rope of the retracting 16 is trimmed from the retracting winch 15, and thereby the remote from the bearing point 2 end of the A-block 18 is moved away from the crane superstructure 1 or to the crane superstructure 1 out.
- a counterweight assembly 4 is provided, which is braced by the tip of the A-block 18 and thus counteracts a tilting moment about the bearing point 2, which is caused by the boom 3 and an optionally attached thereto load.
- the counterweight assembly 4 is moved rearwardly, it is also raised by a certain amount in the vertical direction due to its non-variable suspension at the top of the guy trestle 18.
- a restoring torque is generated, which endeavors to move the counterweight assembly 4 forward again into a position. to move on less potential energy.
- reducing the cable force in the hoist rope 6 will cause the counterweight assembly 4 to be moved forward again. Since the bracing trestle 18 and the boom 3 enclose a constant angle ⁇ , the mechanics of the counterweight adjusting device 7 remain uninfluenced by the size of the rocking angle ⁇ .
- FIG. 2 shows a further embodiment of the crane according to the invention, which essentially differs from the crane shown in FIG. 1 only by another embodiment of the counterweight adjustment device 7.
- the lever element 9 is now arranged to be rotatable about a fixed point relative to the crane platform 1, namely by being mounted on a bracket 1a of the crane superstructure 1 about a pivot point 8.
- This has the consequence that a variable by rocking the boom 3 Lastmoment variable by the counterweight assembly 4 can be compensated.
- the position of the counterweight assembly 4 is not only ab- dependent on the hoist rope load, but also on the load radius or on the
- the boom bracing 19 present in the crane of FIG. 1 can thus be dispensed with, since the bracing forces are now provided by the hoisting cable loop (s) formed between the deflection roller assemblies 12 and 13, the lever element 9, the pendulum support 14, the bracing (21) of the counterweight assembly 4 at the A-Bock tip, and the A-Bock 18 are manufactured.
- the bracing (21) coupling the A-Bock tip to the counterweight assembly 4 must be designed so that it can transmit compressive forces.
- the force then acts on the lever member 9 and pushes by means of the pendulum support 14, the counterweight assembly 4, the counterweight radius in the horizontal direction increasing, to the rear.
- the counterweight assembly 4 is raised in the arc of its suspension, which generates a restoring force on the pendulum support 14 in the lever member 9.
- FIG. 3 and 4 show stationary cranes, the lever member is also articulated as in the crane of Figure 2 to a bracket 1 a of the crane structure 1. While in the crane of Figure 3, the counterweight assembly 4 is carried as already in the cranes of Figures 1 and 2 from the guy trestle 18, at the top of which it is attached, the crane points from Figure 4 in addition to a guide 20 for the counterweight 4.
- This guide 20 comprises an arcuate and coupled to the counterweight assembly 4 guide rail, which is guided by means not further designated rollers on the crane structure.
- the guide 20 offers an additional safety function with respect to the embodiment shown in FIG.
- the counterweight assembly 4 controlled to be returned to a position with a lower counterweight moment, while avoiding undamped overshoot of attached to the A-Bock tip counterweights 4.
- the guide 20 a Both in the figure 3 and in the figure 4 can be clearly seen that the counterweight assembly 4 in the rearwardly deflected state occupies a higher level of storage energy that when re-entering the counterweight assembly 4 is dismantled towards the center of the crane.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017100046.1A DE102017100046B4 (de) | 2017-01-03 | 2017-01-03 | Kran mit hubseillastabhängigem Lastmomentenausgleich |
PCT/EP2017/084554 WO2018127439A1 (de) | 2017-01-03 | 2017-12-22 | Kran mit hubseillastabhängigem lastmomentenausgleich |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3565778A1 true EP3565778A1 (de) | 2019-11-13 |
Family
ID=60915536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17823164.3A Withdrawn EP3565778A1 (de) | 2017-01-03 | 2017-12-22 | Kran mit hubseillastabhängigem lastmomentenausgleich |
Country Status (5)
Country | Link |
---|---|
US (1) | US11186467B2 (de) |
EP (1) | EP3565778A1 (de) |
CN (1) | CN110177753A (de) |
DE (1) | DE102017100046B4 (de) |
WO (1) | WO2018127439A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019116759A1 (de) * | 2019-06-21 | 2020-12-24 | Tadano Demag Gmbh | Verfahren zum Betrieb eines Fahrzeugkrans |
DE102019117178B3 (de) * | 2019-06-26 | 2020-09-24 | Liebherr-Werk Ehingen Gmbh | Kran mit verstellbarem Schwebeballast |
US11465888B2 (en) * | 2020-10-19 | 2022-10-11 | Jason Laidler | System for a vehicle with a detachable hoist |
CN113291974B (zh) * | 2021-05-24 | 2023-06-02 | 中建三局集团华南有限公司 | 一种安全便利的撑下桩笼竖直及滑动吊放装置 |
CN113307140B (zh) * | 2021-07-01 | 2022-03-25 | 张续伟 | 一种可远程操控的履带式起重机 |
CN115402950A (zh) * | 2022-07-22 | 2022-11-29 | 蔡玉芹 | 一种建筑安装用支吊架防倾斜平衡装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE557993C (de) * | 1932-08-31 | Pohlig Akt Ges J | Wippkran | |
DE283876C (de) * | ||||
DE7232092U (de) * | 1973-11-08 | Rheinstahl Ag | Fahrzeugkran mit Teleskopausleger | |
US1344659A (en) * | 1919-12-26 | 1920-06-29 | Whiting Foundry Equipment Comp | Counterbalanced crane |
DE436668C (de) * | 1924-05-15 | 1926-11-08 | Martin Pape Dr Ing | Kran mit wippbarem Ausleger |
DE436688C (de) | 1924-09-03 | 1926-11-05 | Elisabeth Fritz Geb Loist | Einrichtung zur Regelung der Abstaende der Sae- und Legestellen bei Kartoffelleg- und Saemaschinen |
US2408500A (en) * | 1944-09-13 | 1946-10-01 | Maxwell A West | Automatic counterbalance for boom derricks |
FR1413966A (fr) * | 1964-08-27 | 1965-10-15 | Grue à bras en porte-à-faux, munie d'un contrepoids sur bras mobile dont la position est fonction de la charge à soulever | |
US3266636A (en) * | 1965-06-30 | 1966-08-16 | Arrow Mfg Company | Automatically counterbalanced tractor side-boom crane |
DE2917829A1 (de) * | 1979-05-03 | 1980-11-13 | Gottwald Kg Leo | Fahrzeugkran mit teleskopausleger |
DE19857779A1 (de) | 1998-12-04 | 2000-06-15 | Mannesmann Ag | Kran, insbesondere Fahrzeugkran |
-
2017
- 2017-01-03 DE DE102017100046.1A patent/DE102017100046B4/de active Active
- 2017-12-22 CN CN201780081772.4A patent/CN110177753A/zh active Pending
- 2017-12-22 EP EP17823164.3A patent/EP3565778A1/de not_active Withdrawn
- 2017-12-22 WO PCT/EP2017/084554 patent/WO2018127439A1/de active Search and Examination
- 2017-12-22 US US16/475,660 patent/US11186467B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US11186467B2 (en) | 2021-11-30 |
US20190367339A1 (en) | 2019-12-05 |
WO2018127439A1 (de) | 2018-07-12 |
DE102017100046A1 (de) | 2018-07-05 |
DE102017100046B4 (de) | 2019-06-19 |
CN110177753A (zh) | 2019-08-27 |
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