DE3838975C2 - - Google Patents

Info

Publication number
DE3838975C2
DE3838975C2 DE19883838975 DE3838975A DE3838975C2 DE 3838975 C2 DE3838975 C2 DE 3838975C2 DE 19883838975 DE19883838975 DE 19883838975 DE 3838975 A DE3838975 A DE 3838975A DE 3838975 C2 DE3838975 C2 DE 3838975C2
Authority
DE
Germany
Prior art keywords
mast
boom
mobile crane
length
counterweight
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 - Lifetime
Application number
DE19883838975
Other languages
German (de)
Other versions
DE3838975A1 (en
Inventor
Joachim Dipl.-Ing. 4000 Duesseldorf De Lietzau
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.)
Terex Demag GmbH and Co KG
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Priority to DE19883838975 priority Critical patent/DE3838975C2/de
Publication of DE3838975A1 publication Critical patent/DE3838975A1/en
Application granted granted Critical
Publication of DE3838975C2 publication Critical patent/DE3838975C2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/62Constructional features or details
    • B66C23/72Counterweights or supports for balancing lifting couples
    • B66C23/74Counterweights or supports for balancing lifting couples separate from jib
    • B66C23/76Counterweights 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/18Cranes 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
    • B66C23/36Cranes 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

Description

The invention relates to a mobile crane with the features of Preamble of the main claim.

From DE-OS 23 12 191 is a two-axle mobile crane known who quickly from the driving arrangement in the Working position is convertible. He has a little one Counterweight by a 180 degree swivel of the uppercarriage lifted from the shelf and in the rear Bracket is put down. An adjustable strut it is not intended to increase the counter torque and not necessary with such a small vehicle.

The heavy duty crane according to DE-OS 28 39 665 has none length-adjustable strut for moving the counterweight, but just an articulated arm, the one Can prevent the counterweight from swinging sideways.

Furthermore, DE-OS 30 19 220 is known, the one spread arrangement of the counterweight carrier to Increase the stability, the Counterweight carrier is always supported on the floor.

The mobile hoist according to DE-OS 34 27 689 has one Support column that is at the top with the top of the Counterjib is connected. This support is not Hydraulic cylinder and is not used for fast Raising the mast. This is not the purpose of the articulated drawbar connected to the boom, consequently independent, additional devices are used.

The mobile crane according to DD-PS 73 132 has as an aid to raise the mast and the boom one up directional support that is itself unstable and meets the requirements especially not with larger mobile cranes  justice. The counterweight hangs at approximately vertical mast freely down and is strong The mast inclination is fixed to the superstructure by means of a strut and can only take part in one of the many desired Positions.

Based on the latter prior art, it is hence the object of the invention, a mobile crane like this to design that he takes little time from the Driving arrangement in the working position and during the Working position on different sizes and Loads can be converted.

The first part of the task is solved in that the mast of one resting on the superstructure Hydraulic cylinder is erectable and that the strut is variable in length. The mast can be erected then easily done and can be changed due to the length Strut towards the counterweight so inclined be that he the to cancel or adjust the Take the required position easily can.

The second part of the task, namely upgrading different sizes (versatility of the vehicle) and loads (increase in load torque) solved by the length-adjustable strut that Telescopic extension of the mast and the other at the The articulation point located at the tip is adjustable in length Hanging bar the counterweight for application of the required counter torque in the respectively required Distance to the superstructure is brought and on the other hand, the length-adjustable guy device the direct connection of variable length Produces booms and telescopic masts and thus enables raise the boom more or less at full load or to change the radius. The hanging device can by a rope or chain drive or  a hydraulic cylinder extendable and the strut through a pressure medium cylinder with piston  be extendable, which can be fixed in both directions. At especially large distances between the uppercarriage and the counterweight can hangers and struts extension rods or ropes to have.

There is a fold-down support on the chassis for road travel the mast and a counterweight carrier available. So that the role set of Bracing to reduce the height when driving between the mast spars can be arranged, the hanging device must have a bendable Be attached to the mast. The other end of the hanger is on the counterweight carrier. The superstructure also has one Articulation piece for the boom, a telescopic boom or Lattice boom can be and with large dimensions on one special vehicle is transported to the place of use. To initiate the A hoist is used to raise the jib. A Hydraulic cylinder prevents the boom from kicking back strong wind or when the load suddenly breaks off when the boom is very steep. The cabin for controlling the crane operation is for Swiveling side attached to the superstructure and thus allows a good Accessibility to the articulation piece when the boom is attached.

Several embodiments of the invention are in the drawings shown and explained below. Show it:

1 shows a mobile crane in the driving position,

Fig. 2 shows a mobile crane with a telescopic boom in a shortened working position,

Fig. 3 shows a mobile crane with a lattice boom and slightly pivoted counterweight,

Fig. 4 shows a mobile crane with an extended telescopic mast as well as a telescopic boom and a far-reaching counterweight.

The chassis 1 of the mobile crane has a fold-down support 2 behind the driver's cab for supporting the mast 4 during travel and a rotary connection 1.1 for an uppercarriage 3 over the rear axles, to which a crane operating house 3.1 is fastened to the side by means of a pivot axis 3.2 . On the chassis 1 , a counterweight support 8 is also arranged in the front area with an upper attachment point 8.1 for a hanging device 6 , which is articulated on the mast 4 via a bendable end piece 6.1 . Between the spars of the mast 4 is a roller set of a pulley 11 for guying the boom, which is transported while traveling in a special vehicle and can be fastened to a link 19 of the superstructure 3 at the place of use. A strut 7 leading to the counterweight carrier 8 and a hoist cable winch 16 are also arranged on this.

FIG. 2 shows the mobile crane with the telescopic boom 14 retracted, which is connected to the superstructure 3 via the link 19 . The mast 4 was erected with the help of the mast cylinder S and carries the counterweight 9 arranged on the counterweight carrier 8 , which is guided over the strut 7 on the superstructure 3 , via the hanging device 6 with an extendable extension 6.2 . The mast 4 has in the lower area a winch 12 for a rope 10 , which is connected via the pulleys 11 of a block and tackle with a guy 13 for the boom 14 . Its end carries rollers 18 for a hoisting rope 17 of a hoisting winch 16 fastened to the superstructure 3 . Erecting or Nachverstellung the boom 14 is achieved by the pulley. 11 The lifting cylinder 15 supports it.

In the embodiment according Fig. 3 of the vehicle crane has a lattice boom 14.1 and the counterweight 9 is moved to apply a larger load torque over a Ausschiebeverlängerung 7.1 of the strut 7 in the opposite direction of the extension arm 14.1. The support 2 shown in FIG. 1 is folded down.

The use case of Fig. 4, the shortened drawn telescopic boom 14 is fully extended and the bracing 13 was extended to the point of attack on the boom tip by further bracing pieces 13.1. The counterweight 9 is located in front of the cab of the chassis 1 and the strut 7 is connected via an extension rod 7.2 to an extension 6.3 of the suspension device 6 , so that even greater load moments can be realized. The telescopic extension 4.1 of the mast 4 was extended. Instead of the telescopic boom, a lattice boom with several shots according to FIG. 3 can also be used with such a large boom length.

Claims (8)

1. mobile crane with an uppercarriage for a telescopic boom for lifting the load and with a swiveling mast opposite the boom for a counterweight attached to a hanging device, which is connected to the uppercarriage via a strut and with a direct connection between the mast and the boom, characterized in that the mast ( 4 ) can be erected by a mast cylinder ( 5 ) supported on the superstructure ( 3 ) and the strut ( 7 ) can be changed in length and the mast ( 4 ) has a telescopic extension ( 4, 1 ) the tip of which has a pivot point ( 4, 2 ) for the length-adjustable suspension device ( 6 ) and a length-adjustable guy device ( 10, 11, 13 ) for the length-adjustable boom ( 14 ).
2. Mobile crane according to claim 1, characterized in that the variable-length suspension device ( 6 ) has a cable or chain drive.
3. Mobile crane according to claim 1 ,, characterized in that the variable-length suspension device ( 6 ) is a hydraulic cylinder.
4. Mobile crane according to claim 1, characterized in that the length-adjustable strut ( 7 ) is a pressure medium cylinder with a piston.
5. Mobile crane according to claim 2 to 4, characterized in that the hanging device ( 6 ) and strut ( 7 ) have extension rods ( 6.1, 7.1 ).
6. Mobile crane according to claim 1, characterized in that a counterweight carrier ( 8 ) for the counterweight ( 9 ) on the chassis ( 1 ) can be parked, and that the hanging device ( 8 ) attached to an attachment point ( 8,1 ) of the counterweight carrier ( 8 ) 6 ) is articulated to the upper end of the mast ( 4 ) via a bendable end piece ( 6,1 ).
7. Mobile crane according to claim 1, characterized in that a winch ( 12 ) for a rope ( 10 ) a pulley block ( 11 ) for the guying ( 13 ) of the boom ( 14 ) is arranged on the mast ( 4 ) in the vicinity of its articulation point .
8. Mobile crane according to claim 1, characterized in that on the superstructure ( 3 ) on the boom ( 14 ) engaging hydraulic cylinder ( 15 ) is arranged.
DE19883838975 1988-11-14 1988-11-14 Expired - Lifetime DE3838975C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883838975 DE3838975C2 (en) 1988-11-14 1988-11-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883838975 DE3838975C2 (en) 1988-11-14 1988-11-14

Publications (2)

Publication Number Publication Date
DE3838975A1 DE3838975A1 (en) 1990-05-17
DE3838975C2 true DE3838975C2 (en) 1991-02-28

Family

ID=6367383

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883838975 Expired - Lifetime DE3838975C2 (en) 1988-11-14 1988-11-14

Country Status (1)

Country Link
DE (1) DE3838975C2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19730361B4 (en) * 1996-08-23 2006-10-05 Liebherr-Werk Ehingen Gmbh Mobile crane
US7137518B2 (en) 1999-06-28 2006-11-21 Terex-Demag Gmbh & Co. Kg Telescopic crane
DE10022600B4 (en) * 1999-06-28 2007-09-27 Terex-Demag Gmbh & Co. Kg Telescopic crane
US8985353B2 (en) 2006-10-27 2015-03-24 Manitowoc Crane Companies, Llc Mobile lift crane with variable position counterweight
US9278834B2 (en) 2009-08-06 2016-03-08 Manitowoc Crane Group, LLC Lift crane with moveable counterweight

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9114464U1 (en) * 1991-11-21 1993-03-25 Krupp Industrietechnik Gmbh, 4100 Duisburg, De
DE19606109A1 (en) * 1995-12-12 1997-06-19 Liebherr Werk Ehingen Mobile crane
GB2316383B (en) * 1996-08-23 2000-04-05 Liebherr Werk Ehingen Mobile crane
DE19814636A1 (en) * 1998-03-26 1999-09-30 Mannesmann Ag Ring lift crane
DE29816385U1 (en) * 1998-09-11 1999-04-08 Liebherr Werk Ehingen Crane, preferably derrick
DE19944927C2 (en) * 1999-09-13 2001-10-25 Atecs Mannesmann Ag Port crane, in particular mobile harbor crane for normal and heavy load operation
US7546928B2 (en) 2006-10-27 2009-06-16 Manitowoc Crane Companies, Inc. Mobile lift crane with variable position counterweight
MX2008004549A (en) * 2008-01-31 2009-07-30 Monitowoc Crane Companies Inc Mobile lift crane with variable position counterweight.
JP5276867B2 (en) * 2007-04-09 2013-08-28 マニタウォック クレイン カンパニーズ インコーポレイテッド Self-propelled lift crane equipped with variable position counterweight unit and its operating method
US7762412B2 (en) * 2007-04-26 2010-07-27 Manitowoc Crane Companies, Llc Mast raising structure and process for high-capacity mobile lift crane
DE102009048846A1 (en) 2009-10-09 2011-04-21 Liebherr-Werk Ehingen Gmbh crane
DE202013011183U1 (en) 2013-12-10 2014-01-29 Terex Cranes Germany Gmbh Telescopic super lift mast
WO2015113048A1 (en) 2014-01-27 2015-07-30 Manitowoc Crane Companies, Llc Lift crane with improved movable counterweight
WO2015113032A1 (en) 2014-01-27 2015-07-30 Manitowoc Crane Companies, Llc Height adjustment mechanism for an auxiliary member on a crane

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD73132A (en) *
DE2312191A1 (en) * 1973-03-12 1974-09-12 Erich Sennebogen mobile crane
DE2839665C2 (en) * 1978-09-12 1985-06-27 Liebherr-Werk Ehingen Gmbh, 7930 Ehingen, De
US4258852A (en) * 1979-05-25 1981-03-31 Harnischfeger Corporation Auxiliary counterweight arrangement for mobile crane
IT1160249B (en) * 1983-12-27 1987-03-04 Cdf Ss A self-propelled lifting apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19730361B4 (en) * 1996-08-23 2006-10-05 Liebherr-Werk Ehingen Gmbh Mobile crane
US7137518B2 (en) 1999-06-28 2006-11-21 Terex-Demag Gmbh & Co. Kg Telescopic crane
DE10022600B4 (en) * 1999-06-28 2007-09-27 Terex-Demag Gmbh & Co. Kg Telescopic crane
DE10022658B4 (en) * 1999-06-28 2007-10-04 Terex-Demag Gmbh & Co. Kg Telescopic crane
US8985353B2 (en) 2006-10-27 2015-03-24 Manitowoc Crane Companies, Llc Mobile lift crane with variable position counterweight
US9278834B2 (en) 2009-08-06 2016-03-08 Manitowoc Crane Group, LLC Lift crane with moveable counterweight

Also Published As

Publication number Publication date
DE3838975A1 (en) 1990-05-17

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: TEREX-DEMAG GMBH & CO. KG, 66482 ZWEIBRÜCKEN, DE