EP2392537A1 - Tête de verrouillage - Google Patents

Tête de verrouillage Download PDF

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Publication number
EP2392537A1
EP2392537A1 EP11153791A EP11153791A EP2392537A1 EP 2392537 A1 EP2392537 A1 EP 2392537A1 EP 11153791 A EP11153791 A EP 11153791A EP 11153791 A EP11153791 A EP 11153791A EP 2392537 A1 EP2392537 A1 EP 2392537A1
Authority
EP
European Patent Office
Prior art keywords
locking
cylinder
telescopic
bolt
locking head
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
EP11153791A
Other languages
German (de)
English (en)
Other versions
EP2392537B1 (fr
Inventor
Ian Pitson
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.)
Montanhydraulik GmbH
Original Assignee
Montanhydraulik 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 Montanhydraulik GmbH filed Critical Montanhydraulik GmbH
Publication of EP2392537A1 publication Critical patent/EP2392537A1/fr
Application granted granted Critical
Publication of EP2392537B1 publication Critical patent/EP2392537B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/708—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic locking devices for telescopic jibs

Definitions

  • the invention relates to a locking head for telescoping cylinders of a crane telescope comprising a plurality of telescopic sections,
  • the individual telescopic sections of a crane boom of a mobile crane are successively extended by means of a telescoping cylinder and locked together in the extended position.
  • a locking head is required.
  • a telescopic section Before a telescopic section can be moved, it must be coupled with the locking head. For this purpose, two cylinder latch are extended, which come into engagement with the telescopic section. Subsequently, the still coupled with the adjacent telescopic section telescopic arm is unlocked by a corresponding unlocking mechanism is activated. For example, a spring-loaded bolt is pulled by means of an unlocking claw. Now the locking head is displaced by means of the telescoping cylinder, so that the inside lying telescopic shot is extended. In the approached position, the telescopic section must first be locked again with the adjacent telescopic section. For this purpose, the unlocking claw must be returned to its original position.
  • the invention has the object, as small as possible, compact locking head for telescoping a to provide multiple telescopic shots crane boom, which is ensured by means of mechanical systems that the release of a two adjacent telescopic shots summarizing locking bolt is only possible when the cylinder latch are set and the cylinder latch can only be disengaged when the dissolved locking bolt after completed Hub again is set.
  • the locking head according to the invention for telescoping cylinders has in a housing translationally displaceable cylinder latch, which serve to lock the locking head with a telescopic section.
  • the cylinder latches each have a rack portion, which is in meshing engagement with a pinion respectively.
  • the translational displacement of the cylinder bolt is done by actuating the pinion, which must be put into a rotary motion for this purpose. This is done according to the invention via a sprocket, with which the pinion are in meshing engagement.
  • the ring gear surrounds a cylinder receptacle, which serves to receive the Teleskopierzylinders.
  • the particular advantage is that the cylinder latch can be arranged by means of a simple and robust mechanical system in the radial orientation for cylinder reception, which allows a very space-saving, compact and thus lightweight design.
  • the ring gear couples the two cylinder latches with each other by means of the respectively meshing with the ring gear and the associated cylinder latch pinion, so that a rotational movement of the ring gear inevitably leads to a uniform displacement of the preferably diametrically arranged cylinder latch.
  • the rack portion of a bolt is to be arranged opposite to the rack portion of the other bolt.
  • the drive of the ring gear can be done via a drive gear portion which is engaged with a rack portion of a translationally displaceable drive pin.
  • the drive bolt is displaced in particular hydraulically, since hydraulic drives for locking heads are particularly well suited due to the high power density.
  • the drive bolt has a toothed rack section, which translates the sprocket into a rotational movement by translational movement, so that the rotational movement is transmitted to the toothed rack sections of the cylinder locks.
  • the drive bolt is preferably displaceable against the spring force of a return spring.
  • the ring gear next to the drive gear section on another toothed portion which is referred to as a locking toothed portion.
  • the individual gear sections are located in different circumferential segments of the ring gear.
  • the sprocket therefore does not have to be fully interlocked. Since he performs only a limited pivoting movement, it is therefore sufficient to provide only individual sections with a corresponding toothing.
  • the tooth geometry may be quite different in the individual gear sections, if required by the individual gear pairings.
  • the locking gear portion of the ring gear is used to engage with a locking pinion, which in turn is engaged with a rack portion of a translationally movable locking bolt.
  • the locking bolt has the function to block a transversely displaceable to the direction of action of the cylinder latch telescopic bolt body of the locking head.
  • the telescopic bolt body serves to actuate the unlocking of successive telescopic shots.
  • the displacement of the telescopic bolt body and thus the unlocking of successive telescopic shots is only permitted if the unlocked telescopic section is held by the cylinder locks.
  • a mechanical dependence must be ensured. This is achieved in that the locking bolt is displaced in the stroke of the telescopic bolt body.
  • the telescopic bolt body may comprise a safety bolt in an advantageous development, which is displaceable in the stroke of the locking bolt or a cylinder bolt. This ensures that the cylinder locks can not be retracted when the telescopic latch body is actuated to unlock successive telescoping shots.
  • the pinion meshing with the locking bolt can not rotate.
  • the sprocket is fixed, which is engaged via further pinion with the cylinder locks. The sprocket with all its rotation-dependent functions can thus not only effect the adjustment of the telescopic bolt, but also prevent it.
  • the telescopic bolt body is mounted on a plurality of circumferentially arranged on the telescopic bolt body guide elements in the building to guide the telescopic bolt body in its translational movement relative to the housing of the locking head. Due to the compact design with the ring gear, the guide elements can run very close to the cylinder bolts. It is even possible to arrange the telescopic bolt body in the same spatial plane as the cylinder latch.
  • the guide elements are preferably arranged diametrically.
  • the guide elements can serve in an advantageous embodiment of the invention at the same time as an external guide of a helical compression spring, via which the telescopic bolt body is supported on the housing.
  • the helical compression springs serve to return the telescopic bolt body to its original position.
  • the displacement of the telescopic bolt body takes place in an advantageous manner by means of hydraulically actuated unlocking pistons, which engage on the opposite side of the helical compression springs on the telescopic bolt body.
  • two unlocking pistons are provided, which are also arranged opposite one another, so that the forces are introduced uniformly in the telescopic bolt body.
  • the guide elements are thus externally marked to guide the telescopic bolt body and take as cup-like hollow body on the inside, the helical compression spring. You have a double function.
  • the sprocket itself is a very flat-building component that can be easily offset in the longitudinal direction of the Telekopierzylinders arranged to the cylinder latch without the length of the locking head would increase significantly.
  • the pinion meshing with the sprocket and at the same time with the cylinder bolts are therefore correspondingly long. As a result, there is still enough space to arrange the necessary guides for the locking bolt and the securing bolt in a plane which is located between the spanned by the cylinder bolts plane and the plane of the ring gear.
  • the sprocket itself is provided only in the individual, necessary for its function segments with individual toothing sections.
  • the toothing is preferably an external toothing.
  • the ring gear can be made smaller in diameter than an internally toothed ring gear. In the context of the invention, however, it is not excluded that the toothed sections once as external teeth and formed in a different area than internal teeth.
  • the sprocket may be coupled as a central element of the locking head with means for position detection. These means for position detection must detect in particular the position of the cylinder latch. This can be read off at the position of the sprocket. It is therefore not necessary to assign each cylinder lock separately means for position detection.
  • FIG. 1 shows a locking head 1 in cross section.
  • the locking head 1 is attached in a manner not shown to a telescopic cylinder of a plurality of telescopic shots comprising crane jib.
  • the locking head 1 comprises a housing 2, in which translationally displaceable cylinder bars 3, 4 are arranged.
  • the cylinder latch 3, 4 are extendable in opposite directions from the housing 2 and serve to lock the locking head 1 with a telescopic arm to carry this when retracting or extending the Teleskopierzylinders.
  • This unit may be referred to as cylinder lock ZV.
  • FIG. 1 shows the two cylinder latch 3, 4 in the extended state, that is, the locking head 1 and thus the telescoping cylinder is locked with a telescopic section.
  • Transverse to the cylinder bolts 3, 4 is a telescopic bolt body 5 within the housing 2 displaced.
  • the telescopic bar body 5 serves not one To shift the unlocking pin shown closer and to pull in the direction of the housing 2.
  • the telescoping bolt body 5 is configured as a claw that can grasp behind a provided with an undercut head of a Entriegelungsbolzens.
  • the telescopic bolt body 5 is part of the so-called telescopic lock TV. In the illustrated position, the telescopic bolt body 5 is at its top dead center, that is, the release bolt, not shown, could be displaced downwards due to the set cylinder latch 3, 4 in the image plane.
  • the ring gear 6 is so large that a center of the housing 2 arranged cylinder receptacle 7, which serves to receive the Teleskopierzylinders not shown, is completely surrounded by the ring gear 6. From the representation of the center lines can be seen that the central longitudinal axis of the cylinder latch 3, 4 and the central longitudinal axis of the telescopic bolt body intersect at a point. This is, on the one hand, the center of the cylinder receptacle 7, but on the other hand, the center of the ring gear. 6
  • the mounted in the housing 2 ring gear 6 has a plurality of toothing sections.
  • the ring gear is driven via a drive gear section 8, which engages with a rack section 9 of a translationally displaceable drive pin 10.
  • the drive pin 10 is hydraulically displaceable counter to a spring force of a return spring 11, If no hydraulic pressure is applied to the drive pin 10, the drive pin 10 is in the position shown. That is, the cylinder latch 3, 4 are set. When pressure is applied, the drive pin 10 moves to the right, so that the ring gear 6 moved from this direction according to the arrow in the counterclockwise direction.
  • the ring gear 6 serves to actuate the two cylinder latch 3, 4.
  • each gear teeth sections 12, 13 are provided on the ring gear 6, which are in engagement with pinion 14, 15, which rotate in accordance with the arrows.
  • the pinions 14, 15 are in turn with rack sections 16, 17 of the cylinder latch 3, 4 in engagement, so that they would shift according to the arrows, that would be retracted in this case.
  • the two cylinder latch 3, 4 are thus in a dependency. When the one cylinder latch 3 retracts, inevitably the other cylinder latch 4 must retract and vice versa.
  • FIG. 1 also shows a third gear section. This is referred to as Sperrveriereungsabêt 18 and communicates with a locking pinion 19 in meshing engagement.
  • the locking pinion 19 in turn serves to displace a translationally displaceable locking bolt 20, which has a rack portion 21 for this purpose.
  • a helical compression spring 25 On the opposite side of the collar 24 is a helical compression spring 25, so that the displacement of the telescopic bolt body 5 is against a spring force of the helical compression spring 25.
  • a plurality of helical compression springs 25 are provided in particular in a diametrical arrangement in order to allow a uniform application of force to the collar 24 and thus of the telescopic locking bolt body 5.
  • a special feature of the locking head 1 according to the invention is also the type of leadership of the telescopic bolt body 5.
  • Above the locking pin 22 is located on the side opposite the collar 24 a hollow pin-shaped or cup-shaped effetselenlent 26 which is mounted in the housing 2.
  • the guide element 26 is located in the immediate vicinity of the telescopic bolt body, so that act on the guide only very low bending moments.
  • a second, not shown in detail guide member 26 is located in diametrical relationship to the illustrated guide element 26, as shown in FIG. 2 can be seen.
  • the securing bolt 22 also has a guiding function for the telescopic bolt body 5.
  • FIG. 2 it can be seen how short the locking head 1 according to the invention builds.
  • the cylinder bolts 3, 4 are together with the telescopic bolt body 5 in the same spatial plane, which is referred to here as a sectional plane A - A.
  • the pinions 14, 15 In the longitudinal direction offset to the sectional plane A - A is the ring gear 6.
  • the pinions 14, 15 have a correspondingly large longitudinal extent, as they naturally have to extend from the ring gear 6 into the area of the cylinder latches 3, 4. Due to the relatively large diameter of the cylinder latches 3, 4, it is not necessary for the pinions 14, 15 to extend over the entire width of the cylinder latches 3, 4.
  • the pinions 14, 15 are also in use only with slightly more than half of the toothing width of the corresponding toothed rack sections 16, 17 of the cylinder latches 3, 4.
  • the helical compression springs 25 lie exactly below / within the guide elements 26 in the image plane. Between the two guide elements 26 and helical compression springs 26 on one side, the respective unlocking piston 23 and below it are located exactly in the middle the other side of the collar 24, the safety pin 22nd

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP20110153791 2010-06-07 2011-02-09 Tête de verrouillage Not-in-force EP2392537B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010022867 DE102010022867B4 (de) 2010-06-07 2010-06-07 Verriegelungskopf

Publications (2)

Publication Number Publication Date
EP2392537A1 true EP2392537A1 (fr) 2011-12-07
EP2392537B1 EP2392537B1 (fr) 2012-12-19

Family

ID=44510659

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110153791 Not-in-force EP2392537B1 (fr) 2010-06-07 2011-02-09 Tête de verrouillage

Country Status (3)

Country Link
EP (1) EP2392537B1 (fr)
DE (1) DE102010022867B4 (fr)
ES (1) ES2401492T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104340883A (zh) * 2013-08-09 2015-02-11 马尼托沃克起重机集团（法国）公司 机械锁定头
WO2017189439A1 (fr) * 2016-04-25 2017-11-02 Manitowoc Crane Companies, Llc Grue dotée d'un mécanisme de verrouillage rotatif

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011009408B3 (de) * 2011-01-25 2012-05-03 Montanhydraulik Gmbh Verriegelungskopf
DE102012002122B4 (de) 2012-02-03 2019-10-10 Liebherr-Werk Ehingen Gmbh Verriegelungsvorrichtung für einen Teleskopausleger

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0754646B1 (fr) 1995-07-17 2000-05-10 Montanhydraulik GmbH Système de télescopage
DE202005003906U1 (de) 2005-03-09 2005-05-25 Montanhydraulik Gmbh Vorrichtung zum Betätigen von Verriegelungen
DE102007006873B3 (de) * 2007-02-07 2008-01-03 Montanhydraulik Gmbh Verriegelungskopf
EP2218672A2 (fr) * 2009-02-12 2010-08-18 Montanhydraulik GmbH Tête de verrouillage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0754646B1 (fr) 1995-07-17 2000-05-10 Montanhydraulik GmbH Système de télescopage
DE202005003906U1 (de) 2005-03-09 2005-05-25 Montanhydraulik Gmbh Vorrichtung zum Betätigen von Verriegelungen
DE102007006873B3 (de) * 2007-02-07 2008-01-03 Montanhydraulik Gmbh Verriegelungskopf
EP2218672A2 (fr) * 2009-02-12 2010-08-18 Montanhydraulik GmbH Tête de verrouillage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104340883A (zh) * 2013-08-09 2015-02-11 马尼托沃克起重机集团（法国）公司 机械锁定头
WO2017189439A1 (fr) * 2016-04-25 2017-11-02 Manitowoc Crane Companies, Llc Grue dotée d'un mécanisme de verrouillage rotatif
US10457529B2 (en) 2016-04-25 2019-10-29 Manitowoc Crane Companies, Llc Crane with rotary locking mechanism

Also Published As

Publication number Publication date
DE102010022867A1 (de) 2011-12-08
EP2392537B1 (fr) 2012-12-19
ES2401492T3 (es) 2013-04-22
DE102010022867B4 (de) 2012-03-29

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