EP0524402A1 - Grue montée sur un véhicule - Google Patents

Grue montée sur un véhicule Download PDF

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Publication number
EP0524402A1
EP0524402A1 EP92109063A EP92109063A EP0524402A1 EP 0524402 A1 EP0524402 A1 EP 0524402A1 EP 92109063 A EP92109063 A EP 92109063A EP 92109063 A EP92109063 A EP 92109063A EP 0524402 A1 EP0524402 A1 EP 0524402A1
Authority
EP
European Patent Office
Prior art keywords
piston
counterweight
piston rods
cylinder
proximity switches
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.)
Granted
Application number
EP92109063A
Other languages
German (de)
English (en)
Other versions
EP0524402B1 (fr
Inventor
Wolfgang Weider
Hermann Daum
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.)
Faun GmbH
Original Assignee
Faun 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 Faun GmbH filed Critical Faun GmbH
Publication of EP0524402A1 publication Critical patent/EP0524402A1/fr
Application granted granted Critical
Publication of EP0524402B1 publication Critical patent/EP0524402B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Definitions

  • the invention relates to a crane vehicle according to the preamble of claim 1.
  • Such a crane vehicle is known from DE 39 12 868 C1.
  • Its superstructure has a counterweight plate on its counter jib for the jib, which must be held on the counter jib of the superstructure for load balancing and stability reasons during crane operation of the crane vehicle.
  • the counterweight plate is placed on a shelf on the undercarriage, preferably between the driver's cab of the crane vehicle and its superstructure, as a result of which better load distribution and relief of the slewing ring is achieved.
  • the counterweight plate is lowered and raised by means of a lifting device consisting of two vertical, hydraulic lifting cylinders on the counterjib.
  • the two piston rods of the lifting cylinders can be driven in rotation about their longitudinal axis between a locking position positively connected to the counterweight plate and an unlocking position released from the counterweight plate.
  • the piston rod with its locking element - for example a cross bolt at the free end of the piston rod - must be in a so-called piston rod release position in which the frictional connection between it and the counterweight plate is released.
  • the invention is therefore based on the object of creating a crane vehicle of the generic type which has high operational reliability.
  • a control control device is provided which is coupled to the sensor and / or display device.
  • the crane control can be switched off by means of the control control device if the counterweight has come out of its correct crane operating position. This interrupts, for example, a rotational movement of the superstructure, which means that the superstructure cannot move against an obstacle with the counterweight lowered.
  • the detection and display of the piston rod release position serves to inform the crane operator that the counterweight is in its proper storage position on the undercarriage and that the locking engagement between the locking elements of the piston rods and the counterweight is relieved. In this state, the rotary drive of the piston rods can then be actuated to release their locking with the counterweight.
  • the rotary drive control of the piston rods can be switched off if the piston rods are not in their correct release position. This prevents, for example, that the rotary drive of the piston rods for unlocking against the counterweight is started when the counterweight is in its crane operating position.
  • the display devices in the form of, for example, control lights are, of course, arranged in the field of vision of the crane driver, that is to say, for example, in the dashboard of the uppercarriage cab.
  • a further improvement in operational safety is achieved by the further development of the crane vehicle according to claim 2, according to which the locking or unlocking position of the piston rods is detected and displayed by means of a further display device.
  • the crane operator In connection with the measures specified in claim 1, the crane operator is constantly and completely informed about the operationally relevant positions of the piston rods.
  • the further sensor and control control devices specified in claim 3 also serve to increase the operational safety of the crane vehicle. With them it is basically prevented that the counterweight is not lowered in the desired rotational position of the superstructure relative to the undercarriage for lowering the counterweight on the undercarriage.
  • comprehensive operational safety of the crane vehicle is achieved with regard to the mounting and lowering of the counterweight, since all possibilities for incorrect operation are excluded and machine-side malfunctions can be detected at any time.
  • proximity switches based on induction are conventional devices for position monitoring, which can be easily used in electrical circuits for controlling, for example, control lights and corresponding circuits for controlling the crane control or the hydraulic rotary drive for the piston rods.
  • commercially available and therefore particularly inexpensive large series parts can be used for the construction according to the invention.
  • the sensor device for detecting the locking and unlocking position of the piston rods is specified.
  • This also essentially consists of proximity switches, the advantages of which have already been explained.
  • the sensor device can be implemented in a structurally simple manner by means of the specified rotary drive and its coupling to the piston rod via a drive rod and a rotary angle sensor seated thereon, in particular the rotary angle detection of the Piston rod outside the actual stroke range of the piston rod can be arranged at the upper end of the piston-cylinder drive, where there is enough space for the sensor device.
  • the sensor device specified in claims 12 and 13 for detecting the desired rotational position of the uppercarriage relative to the undercarriage for lowering the counterweight on the storage of the undercarriage advantageously makes use of the lock between the uppercarriage and undercarriage, which is already present in known crane vehicles, in this desired rotational position. It only needs to be detected via a contact switch whether a conventional locking bolt between the undercarriage and superstructure is in place. This ensures that the superstructure is in its target rotational position and actuation of the slewing ring is excluded. This also automatically places the counterweight in its correct position on the undercarriage.
  • the electrical arrangement of the contact switch specified in claim 13 ensures that the counterweight can only be lowered when the superstructure is in its desired rotational position. Otherwise the lowering drive is automatically blocked.
  • a crane vehicle according to the invention is shown. It has an undercarriage 1 with a chassis 2, a three-axle chassis 3 and a driver's cab 4. On the top of the chassis 2, behind the driver's cab 4, a stage-like or platform-like storage 5 is provided for a counterweight plate 6, which, in its crane operating position shown in FIG. 1, together with an essentially identical, stationary abutment plate 7 on the rear counter-jib 8 of the Upper car 9 is held.
  • the superstructure 9 itself is rotatably mounted on the undercarriage 1 in a conventional manner via a slewing ring 10 and has a driver's cab 11 and a telescopic boom 12 which is pivotably mounted on the counter jib 8 in the height direction and can be moved via the so-called luffing cylinder 13.
  • the upper carriage 9 is driven by the hydraulic motor 10 ′ on the upper carriage 9.
  • a lifting device is provided on the counter-arm 8, which consists of two vertical hydraulic lifting cylinders 14, 14 'arranged on the side of the arm 12 at the rear, behind the articulation point of the arm 12 Counterjib 8 exists.
  • the counter jib 8 for holding the lifting cylinders 14, 14 ' has a horizontally extending plate 15, which extends laterally on both sides of the counter jib 8, on which the lower holding blocks 17 of each lifting cylinder 14 are located in openings , 14 'are attached.
  • the lifting cylinders 14, 14 'thus protrude above the plate 15.
  • the piston rods 18, 18 ' which emerge downwards from the lifting cylinders 14, 14', reach through the abutment plate 7, which is fixedly connected to the plate 15 by means of screws 19, via its elongated through openings 20 and engage with their free ends 21 in the elongated through openings 22, 22 'in the counterweight plate 6 (Fig. 14).
  • the passage openings 20, 22, 22 ' are cylindrically widened in cross section from the underside of the plates 6, 7, so that in the vertical course of the passage openings 20, 22, 22' a step-shaped shoulder 23 is formed, which is used to lock the counterweight plate 6 (and if necessary, also the abutment plate 7 for its mounting on the superstructure 9) with the piston rods 18, 18 'by the transverse bolts 24 24' at the free ends 21, 21 'of the piston rods 18, 18'.
  • To unlock the piston rods 18, 18 ' these are each to be pivoted through 90 ° about their longitudinal axis, so that the transverse bolts 24, 24' can freely pass through the slot-like cross section of the through opening 22, 22 '.
  • the cross bolts 24, 24 ' are pivotable about 5 ° from the horizontal at the free ends 21, 21' of the piston rods 18, 18 '.
  • both the counterweight plate 6 and the abutment plate 7 have an arcuate shape in plan view with mutually parallel, partially circular longitudinal sides 25 and rectilinear, mutually parallel transverse sides 26.
  • a flat rectangular recess 27 is provided on the inner side 25 of the arch, into which a correspondingly shaped elevation 27 ′ on the shelf 5 engages.
  • four cup-shaped depressions 28 are provided, in which, in the lowered position of the counterweight plate 6 shown in FIG. 5, engage frustoconical projections 29 of the tray 5 for securing the position of the counterweight plate 6 when the crane vehicle is in operation.
  • the structure of the lifting cylinder 14 is clear.
  • the second lifting cylinder 14 ' is identical.
  • the cylinder body 30 extends upwards, in which the piston 31, with its piston rod 18 emerging downwards through a sealed passage opening 32, is guided so that it can be driven vertically upwards or downwards by means of hydraulic fluid.
  • the cylinder body 30 is closed by a cover 33, into which the rotary drive 34 and a sensor device 35 for detecting the rotational position of the piston rod 18 are integrated.
  • the hydraulic oil connections 36, 56 of the lifting cylinder 14 are arranged at the lower or upper end of the cylinder body 30. If hydraulic oil is introduced under pressure into the lifting cylinder 14 through the lower connection 36, the piston 31 moves with the piston rod 18 upward, as a result of which oil is pressed out of the cylinder 14 via the upper hydraulic oil connection 56. With the downward movement of the piston 31 and the piston rod 18, the procedure is reversed.
  • sensor devices 37, 38 are provided, each of which is formed on the outside of the lifting cylinder 14 by proximity switches 39, 40 in connection with the flat-iron push rod 41 (FIGS. 6, 7).
  • the push rod 41 runs parallel to the piston rod 18 and is coupled to this in longitudinal movement, for which purpose the lower end of the push rod 41 is designed as a bent fork 42, which seats the free end 21 of the piston rod 18 between two upper and lower sides of the fork 42 on the piston rod 18 Fixing rings 43, 44 engages.
  • the piston rod 18 can be freely rotated relative to the push rod 41, but both components are fixed in the longitudinal direction so as not to be displaceable relative to one another.
  • the proximity switches 39, 40 are held and the push rod 41 is guided via a top-hat rail 45 which is fastened to the outside of the cylinder body 30 via two angle irons 46, 47 with their two equally arranged contact flanges 48, 49.
  • two further small angle irons 52, 53 are fastened, which form the outside guide for the push rod 41.
  • the proximity switches 39, 40 are fastened in slots 55 (FIGS. 4, 5) in such a way that there is sufficient distance between their end faces 60, which form the response area, and form the cylinder body 30, so that the push rod 41 can be passed through the gap. Due to the fastening in the longitudinal slot 55, the proximity switches 39, 40 can be displaced in the direction parallel to the piston rod 18.
  • FIG. 8 shows the sensor device 35 for detecting the rotational position of the piston rod 18.
  • two proximity switches 58, 59 offset from one another by an angle of rotation of 90 °, are arranged with their end faces 60 ′ defining the response range approximately tangentially to a central through-bore 61.
  • a ring 62 is rotatably mounted as an angle encoder, which is connected to a central drive rod 63 in a rotationally fixed manner.
  • the drive rod 63 arranged coaxially with the piston rod 18 in the lifting cylinder 14 measures the entire length of the cylinder body 30 and engages in an axial longitudinal bore 64 of the piston rod 18 with respect to the rotational movement of the two rods 18, 63, while a relative, coaxial longitudinal movement of the two Rods 18, 63 to each other is possible. If the recess 65 on the outer surface of the ring 62 comes into the response range of one of the two proximity switches 58, 59, its response is triggered and thus the rotational position of the drive rod 63 and thus the piston rod 18 are detected.
  • the rotary drive 34 shown in FIGS. 9 and 10 consists of a cylindrical housing part 66, in the interior of which a disk 67 is rotatably mounted coaxially at a distance from the inner walls and is fixedly connected to the drive rod 63. About 3/4 of the circumference of the Disc 67, the spacing gap between the disc 67 and the housing part 66 is closed by a stationary insert ring 68, the free ends of which serve as a stop for a lateral piston extension 69 of the disc 67. At the free end of the piston extension 69, a seal 70 is provided to the inner wall of the housing part 66.
  • FIG. 11 and 12 each show a basic circuit diagram of the hydraulic and electrical control and monitoring device for the lifting device of the counterweight plate 6 in its raised operating position (FIG. 11) or stored driving position (FIG. 12).
  • the two identically designed lifting cylinders 14, 14 'with the parts and attachments assigned to them are found in the two figures. To distinguish the parts and attachments of the two lifting cylinders 14, 14 ', their reference numbers are listed below with or without an apostrophe.
  • 11 and 12 are consequently the piston rods 18, 18 ', the transverse bolts 24, 24', the cylinder bodies 30, 30 ', the pistons 31, 31', the rotary drives 34, 34 ', the drive rods 63, 63' ,
  • the angle of rotation encoder (rings 62, 62 '), the push rods 41, 41' and the various proximity switches 39, 39 ', 40, 40', 58, 58 ', 59, 59' can be seen.
  • the latter are shown in FIGS. 11 and 12 from a combination of a flat, small rectangle to indicate their constructive position on the lifting cylinders 14, 14 'and the electrical circuit symbol for' switch 'to indicate their circuitry position within the control devices.
  • the hydraulic part of the control system is shown schematically in FIGS. 11 to 13 by the thicker lines.
  • the pressure line 74 is connected via a hydraulic pump 75 Hydraulic oil applied.
  • a first branch line 76 leads to the hydraulic elements of the crane operator.
  • a second branch line 77 from the pressure line 74 and a pressure-free return line 78 to the reservoir 73 are connected via an electromagnetically actuated shuttle valve 79 to the two connecting lines 80, 81, each branching in fluidic parallel connection to the hydraulic connections of the rotary drives 34, 34 ' . Due to the alternately possible connection of the branch line 77 and return line 78 to the connecting lines 80, 81, the latter can alternately function as a pressurized flow line or pressure-free return line, with the rotary movement of the rotary drives 34, 34 'for locking and unlocking the piston rod 18, 18 'can be caused.
  • a third branch line 82 from the pressure line 74 and a further return line 83 to the reservoir 73 are alternately connected to the two connecting lines 85, 86 via an electromagnetically actuated shuttle valve 84.
  • the connecting lines 85, 86 can alternately function as a pressurized feed line or as a non-pressurized return line through the alternate connection to the branch line 82 or the return line 83 via the shuttle valve 84, thus driving the piston rods 18, 18 'in the longitudinal direction thereof above and below is possible.
  • the electrical part of the control system shown with thinner lines is composed as follows according to FIGS. 11 and 12: Starting from the positive operating voltage (+) of the crane vehicle, the two upper proximity switches 39, 39 'are electrically connected in parallel via leads 87, 87' and leads 88, 88 '. These two proximity switches 39, 39 'form the first sensor device 37 for monitoring the operating position of the counterweight plate 6 or piston rods 18, 18' shown in FIGS. 4 and 6 (upper part).
  • the control lamp 89 is electrically connected in series with this parallel connection to ground 90.
  • a relay 91 used, the control output of which is connected via the control line 92 to an electromagnetically actuated shut-off valve 93 in the branch line 76 for crane operation.
  • the upper free end of the push rod 41 is in the response range of the two proximity switches 39, 39', with which the latter are open. If one of the two piston rods, e.g. If the rod 18 moves down due to incorrect operation or, for example, a leak in the hydraulic system, the push rod 41 comes out of the response range of the corresponding proximity switch 39, as a result of which the circuit between the positive operating voltage (+) via the proximity switch 39 and the control lamp 89 is closed and the latter lights up. The crane operator is accordingly warned optically. At the same time, the relay 91 responds and closes the shut-off valve 93 in the branch line 76 for crane operation, which means that no crane movement and in particular no rotary movement of the superstructure 9 can be carried out by means of the hydraulic motor 10 '.
  • the lower proximity switches 40, 40 'of the two lifting cylinders 14, 14' as well as the indicator lamp 95 and further a changeover switch 96 are in series with the electromagnetically actuatable via a connecting line designated 94 as a whole Shuttle valve 79 switched.
  • the two proximity switches 40, 40 'thus form the second sensor device 38 and the control lamp 95 a display device, by means of which the release piston rod position to be assumed for relieving the locking engagement between the piston rods 18, 18' and the counterweight plate 6 in their storage position can be detected and displayed is.
  • the two connecting lines 80, 81 can be connected to the pressure line 74 and the reservoir 73, respectively, by means of a corresponding actuation of the changeover switch 96 and the associated activation of the electromagnetic changeover valve 79, via the closed circuit which represents the control control device for the rotary drive control Rotation of the rotary drives 34, 34 'and thus the piston rods 18, 18' can take place from their locked position (FIG. 11) into their unlocked position (FIG. 12).
  • Proximity switches 58, 58 ', 59, 59' are provided in the area of the rotary drives 34, 34 'for detecting and displaying the respective rotational position of the piston rods 18, 18'.
  • the one proximity switches 58, 58 'of the two rotary drives 34, 34' are connected in series with a control lamp 98 against ground 90, starting from the positive operating voltage (+) of the crane vehicle, via a connecting line designated 97 as a whole.
  • the two proximity switches 58, 58 ' are closed in the locking position of the piston rods 18, 18' (FIG. 11) due to the ring 62 acting as an angle encoder, and the corresponding indicator lamp 98 for indicating the locking position lights up. If the piston rods 18, 18 'are extended downward into their release position, which is detected by the proximity switches 40, 40', then the rotary drives 34, 34 'for rotating the piston rods 18, 18' can be actuated by the changeover valve 79 controlled by the changeover switch 96. from the locked to the unlocked position (Fig. 12). After leaving the locking position, the two proximity switches 58, 58 'open and the control lamp 98 goes out.
  • the crane operator can now move the piston rods 18, 18 'upwards again by actuating the lifting device again and spend the superstructure 9, for example, from the crane operating position shown in FIG. 1 by 180 ° into the driving position shown in FIG. 2.
  • the hydraulic and electrical control for the counterweight storage shown in FIG. 13 is shown analogously to FIG. 12 in the unlocked release position of the piston rods 18, 18 '. It largely corresponds to the control shown in FIGS. 11 and 12, so that corresponding components are provided with identical reference numerals and a corresponding description is unnecessary. It differs only in the additional sensor and control control device described below for detecting the desired rotational position of the superstructure 9 relative to the undercarriage 1 for switching off the lowering drive of the lifting cylinders 14, 14 '.
  • the uppercarriage 9 of a crane vehicle with the undercarriage 1 is usually fixable in the desired rotational position of the uppercarriage 9 shown in FIG. 1 relative to the undercarriage 1 for lowering the counterweight plate 6 by means of a plug pin 101, which in two aligned openings 102, 103 can be inserted.
  • a plug pin 101 which in two aligned openings 102, 103 can be inserted.
  • a contact switch 104 is provided as a sensor device for detecting this desired rotational position in the plug-in area of the plug pin 101, which is labeled 106 as a whole Connection line in series with an actuation switch 105 between the positive operating voltage (+) and the electromagnetically actuated shuttle valve 84 is connected.
  • the second control input of the electromagnetic shuttle valve 84 is connected to the positive operating voltage (+) via a further connecting line 107.
  • the shuttle valve 84 is controlled so that the actuating switch 105 actuates the lifting cylinders 14, 14 'hydraulically in order to lower the piston rods 18, 18'. This is only possible if the plug pin 101 is in its intended position, since otherwise the contact switch 104 is open and energization of the shuttle valve 84 is prevented.
  • the piston rods 18, 18 ' can be raised at any time by actuating the actuation switch 108.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Vehicle Body Suspensions (AREA)
EP92109063A 1991-07-20 1992-05-29 Grue montée sur un véhicule Expired - Lifetime EP0524402B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4124173A DE4124173A1 (de) 1991-07-20 1991-07-20 Kranfahrzeug
DE4124173 1991-07-20

Publications (2)

Publication Number Publication Date
EP0524402A1 true EP0524402A1 (fr) 1993-01-27
EP0524402B1 EP0524402B1 (fr) 1996-03-06

Family

ID=6436678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92109063A Expired - Lifetime EP0524402B1 (fr) 1991-07-20 1992-05-29 Grue montée sur un véhicule

Country Status (6)

Country Link
US (1) US5199583A (fr)
EP (1) EP0524402B1 (fr)
JP (1) JPH05186188A (fr)
AT (1) ATE134978T1 (fr)
DE (2) DE4124173A1 (fr)
ES (1) ES2087340T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597334A1 (fr) * 1992-11-07 1994-05-18 Fried. Krupp AG Hoesch-Krupp Dispositif de transfert
EP1607364A2 (fr) * 2004-06-16 2005-12-21 Liebherr-Werk Ehingen GmbH Systeme de contrepoids d'une grue

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4405780A1 (de) * 1994-02-23 1995-08-24 Krupp Ag Hoesch Krupp Hubeinrichtung für eine Umsetzvorrichtung
US5833268A (en) * 1996-12-06 1998-11-10 Aldrovandi; Louis Counterweight hoisting mechanism
US5941401A (en) * 1997-01-29 1999-08-24 Manitowoc Crane Group, Inc. Counterweight handling system for ring supported cranes
CA2252446C (fr) * 1997-10-31 2003-06-10 Grove U.S. L.L.C. Systeme automatique de mise a niveau et de synchronisation pour l'installation et l'enlevement d'un contrepoids
IT1311436B1 (it) * 1999-12-17 2002-03-12 New Holland Italia Spa Macchina movimento terra.
US7967158B2 (en) 2006-10-27 2011-06-28 Manitowoc Crane Companies, Llc Mobile lift crane with variable position counterweight
DE202006019421U1 (de) * 2006-12-22 2008-04-30 Liebherr-Werk Ehingen Gmbh Kranfahrzeug
US7852229B1 (en) * 2008-09-15 2010-12-14 Gohl Russell R Excavation equipment alarm system
AT507333B1 (de) * 2008-10-09 2011-09-15 Hans Kuenz Ges M B H Portalkran
US9278834B2 (en) 2009-08-06 2016-03-08 Manitowoc Crane Group, LLC Lift crane with moveable counterweight
CN102849624B (zh) * 2011-06-29 2016-12-21 利勃海尔爱茵根有限公司 操作起重机的方法和起重机
CN110255402B (zh) 2014-01-27 2022-02-18 马尼托瓦克起重机有限责任公司 带有改进的可动配重的吊升起重机
US10183848B2 (en) * 2014-01-27 2019-01-22 Manitowoc Crane Companies, Llc Height adjustment mechanism for an auxiliary member on a crane
BR112016027708B1 (pt) * 2014-05-26 2021-08-31 Xuzhou Heavy Machinery Co., Ltd Dispositivo e método de engate de contrapeso combinado e estrutura de montagem de contrapeso
DE202014008661U1 (de) * 2014-10-31 2014-12-02 Liebherr-Werk Ehingen Gmbh Mobilkran mit Ballastaufnahmevorrichtung
US11097927B1 (en) * 2016-04-20 2021-08-24 Link-Belt Cranes, L.P., Lllp Lifting machine with counterweight sensing system and related methods
DE102016005505A1 (de) * 2016-05-04 2017-11-09 Liebherr-Werk Ehingen Gmbh Mobilkran mit Ballastaufnahme sowie Verfahren zur Ballastierung eines Mobilkrans
DE102016008822B4 (de) * 2016-07-19 2021-05-20 Liebherr-Werk Ehingen Gmbh Mobilkran mit verstellbarer Ballastaufnahmevorrichtung
DE102016010365B4 (de) * 2016-08-26 2019-05-16 Liebherr-Werk Ehingen Gmbh Kran und Gegenballastträgerplatte
JP6898111B2 (ja) * 2017-02-28 2021-07-07 住友重機械建機クレーン株式会社 カウンタウエイト装置及び建設機械
US10822212B1 (en) * 2020-06-11 2020-11-03 Altec Industries, Inc. Counterweight attachment mechanism for a crane

Citations (4)

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Publication number Priority date Publication date Assignee Title
FR1440141A (fr) * 1965-04-16 1966-05-27 Appareil à flèche équilibrée à dispositif de sécurité
US3278045A (en) * 1964-03-09 1966-10-11 American Hoist & Derrick Co Counterweight support mechanism
EP0240652A1 (fr) * 1986-04-07 1987-10-14 Harnischfeger GmbH Dispositif pour monter et démonter un contre-poids d'une flèche de grue hydraulique mobile
DE3912868C1 (de) * 1989-02-20 1990-08-16 Liebherr Werk Ehingen Kranfahrzeug mit mindestens einer auf diesem ablebaren und an dessen Oberwagen ankuppelbaren Gegengewichtsplatte

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Publication number Priority date Publication date Assignee Title
US3375048A (en) * 1966-11-21 1968-03-26 Link Belt Co Counterweight mounting mechanism
US3891095A (en) * 1974-04-22 1975-06-24 Case Co J I Removable counterweight mounting mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3278045A (en) * 1964-03-09 1966-10-11 American Hoist & Derrick Co Counterweight support mechanism
FR1440141A (fr) * 1965-04-16 1966-05-27 Appareil à flèche équilibrée à dispositif de sécurité
EP0240652A1 (fr) * 1986-04-07 1987-10-14 Harnischfeger GmbH Dispositif pour monter et démonter un contre-poids d'une flèche de grue hydraulique mobile
DE3912868C1 (de) * 1989-02-20 1990-08-16 Liebherr Werk Ehingen Kranfahrzeug mit mindestens einer auf diesem ablebaren und an dessen Oberwagen ankuppelbaren Gegengewichtsplatte

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597334A1 (fr) * 1992-11-07 1994-05-18 Fried. Krupp AG Hoesch-Krupp Dispositif de transfert
EP1607364A2 (fr) * 2004-06-16 2005-12-21 Liebherr-Werk Ehingen GmbH Systeme de contrepoids d'une grue
EP1607364A3 (fr) * 2004-06-16 2006-08-09 Liebherr-Werk Ehingen GmbH Systeme de contrepoids d'une grue

Also Published As

Publication number Publication date
ATE134978T1 (de) 1996-03-15
US5199583A (en) 1993-04-06
DE59205548D1 (de) 1996-04-11
EP0524402B1 (fr) 1996-03-06
DE4124173A1 (de) 1993-01-21
JPH05186188A (ja) 1993-07-27
ES2087340T3 (es) 1996-07-16

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