EP0062810A2 - Dispositif de levage - Google Patents

Dispositif de levage Download PDF

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Publication number
EP0062810A2
EP0062810A2 EP82102547A EP82102547A EP0062810A2 EP 0062810 A2 EP0062810 A2 EP 0062810A2 EP 82102547 A EP82102547 A EP 82102547A EP 82102547 A EP82102547 A EP 82102547A EP 0062810 A2 EP0062810 A2 EP 0062810A2
Authority
EP
European Patent Office
Prior art keywords
piston
nut
sleeve
braking device
hoist according
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Withdrawn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
EP82102547A
Other languages
German (de)
English (en)
Other versions
EP0062810A3 (fr
Inventor
Gerhard Fischer
Harald Dipl.-Ing. Berger
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.)
INTERPATENT BV
Original Assignee
INTERPATENT BV
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 INTERPATENT BV filed Critical INTERPATENT BV
Publication of EP0062810A2 publication Critical patent/EP0062810A2/fr
Publication of EP0062810A3 publication Critical patent/EP0062810A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/18—Power-operated hoists

Definitions

  • the invention relates to a hoist, the pulley used in a cylindrical housing, formed from two mutually adjustable sets of cable wheels, the fixed cable wheel set rotatably mounted in an intermediate flange and the adjustable cable wheel set guided in the housing by means of a piston-like component via piston rods with a Adjustment piston which can be acted upon by compressed air and which is arranged in a cylinder fastened to the intermediate flange on the side opposite the adjustable cable wheel set, the adjustment piston being provided with a braking device by means of which the adjustment movement can be braked if a maximum value is exceeded.
  • a hoist of this type is known from DE-GM 7 934 679.
  • the braking device consists of a closed and a liquid attached to the adjusting piston or gaseous medium-filled cylinder, a stationary separating piston used in this, through which the cylinder is divided into a first and a second cylinder space, and a connecting line incorporated into the separating piston between the throttle and shut-off device used between them.
  • malfunctions can nevertheless occur, since over time leakage losses at the separating points of the parts to be sealed against one another are unavoidable, so that sometimes correct functioning is no longer guaranteed over a longer period of time .
  • the braking device consists of a rotatably mounted and axially displaceable nut, which is arranged on one of the piston rods and is connected to this by means of a thread, and a sleeve which supports this and is held stationary, and in that the sleeve has one or more friction surfaces is provided with which the mother cooperates in an axial displacement.
  • a hoist of the aforementioned type is equipped with a braking device designed according to the invention, it is ensured that, even if the load rope is suddenly relieved, the adjusting piston is not displaced into its end position at high speed and the rope thus shoots up.
  • the braking device which is designed in a simple manner and thus can be manufactured economically, enables a continuously adjustable displacement of the adjustment piston in one or both adjustment directions, so that the load rope does not spring up and, as a result, any risk of accidents a certain value, the nut, which is rotatably mounted on one of the piston rods, is carried along by it in the axial direction, since the acceleration of the nut is delayed due to its mass.
  • the hoist shown in Fig. 1 and designated 1 for lifting or lowering a load 3 attached to a load rope 2 consists essentially of a pulley 11, over whose rope pulley sets 12 and 13 formed from individual rope pulleys the load rope 2 is guided, and one of compressed air actable adjustable piston 19 which is rigidly connected via two piston rods 21 to the component 16 carrying the adjustable cable wheel set 13.
  • the stationary cable wheel set 12 is in this case rotatably mounted on an axis 23 in an intermediate piece 14, which is equipped for this purpose with a rectangular recess 29, to which a housing 15 connected by a cover 17 for receiving the component 16 and a cylinder 18 for Storage of the adjusting piston 19 are attached.
  • the housing 15 and the cylinder 18 are attached to the intermediate piece 14 in an airtight manner.
  • the intermediate piece 14 thus forms an externally closed housing part and the lifting device 1 is a completely sealed, closed structural unit.
  • external tie rods 28 which are supported on the cover 17 and a cover 20 closing the cylinder 18, the individual parts of the lifting device 1 are firmly clamped together.
  • the adjusting piston 19 would be moved very quickly into the right end position, which can be limited by a stop (not shown), since no counterforce is being exerted, and that Load rope 2 would u. U. soar.
  • the adjusting piston 19 is assigned a braking device 31, by means of which its acceleration is limited to a maximum value or by which its adjusting movement is stopped when it is exceeded, so that a sudden tightening of the load 3 is excluded.
  • the braking device 31 with which this can be accomplished, consists, as can be seen in detail in FIG. 2, of a rotatably mounted nut 32 arranged on one of the piston rods 21, as well as a sleeve 33 receiving this, which by means of a Approach 34 and a wedge connection 35 is fixedly connected to the intermediate piece 14.
  • a trapezoidal thread 38 which engages in a mating thread 37 incorporated into the piston rod 21, with this nut 32, which is operatively connected, is rotatably held in the sleeve 33 by means of axial roller bearings 39 and 4o, namely that several compression springs inserted into bores 42 act on the roller bearing 4o 43 a, through which this and the nut 32 and the other roller bearing 39 are pressed against a locking ring 41 inserted into the sleeve 33.
  • the nut 32 Since the threads 37 and 38 are not designed to be self-locking, the nut 32 is rotated by the piston rod 21, which is also displaced in the direction of arrow A, until the adjustable piston 19 accelerates. However, the acceleration of the piston rod 21 rises above the predetermined value Because, for example, when the adjusting piston 19 was loaded, the load 3 was removed and, because there is no corresponding counterforce, the load 3 would suddenly be moved to its end position at an increased speed, the nut 32 will also, since due to its mass this will only move over the Threads 37 and 38 are drivingly connected to the piston rod 21 and cannot be accelerated in the same time, axially entrained.
  • V-shaped friction surfaces 36 are provided, which cooperate with mating surfaces 45 attached to the shoulder 44 of the nut 32, the nut 32 and the piston connected to it in a driving manner rod 21 braked.
  • the adjusting piston 19 is held in this way, so that the load rope 2 is prevented from springing up; rather, it is ensured that the adjustment speed of the adjustment piston does not exceed a maximum value even when the lifting device 1 is suddenly relieved and that relief shocks are thus absorbed.
  • the nut 32 By means of the compression springs 43, the nut 32, as soon as it is no longer carried along by the piston rod 21 in the axial direction, is returned to the operating position shown in FIG. 2, so that the braking effect, since the surfaces 36 and 45 no longer abut one another, is canceled is.
  • the V-shaped or double-conical design of the braking surfaces 36 and 45 ensures that the nut 32 is centered during a braking operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Jib Cranes (AREA)
EP82102547A 1981-04-15 1982-03-26 Dispositif de levage Withdrawn EP0062810A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3115206 1981-04-15
DE3115206A DE3115206C2 (de) 1981-04-15 1981-04-15 Hebezeug

Publications (2)

Publication Number Publication Date
EP0062810A2 true EP0062810A2 (fr) 1982-10-20
EP0062810A3 EP0062810A3 (fr) 1983-06-22

Family

ID=6130200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102547A Withdrawn EP0062810A3 (fr) 1981-04-15 1982-03-26 Dispositif de levage

Country Status (11)

Country Link
US (1) US4455013A (fr)
EP (1) EP0062810A3 (fr)
JP (1) JPS57180592A (fr)
AU (1) AU8213682A (fr)
BR (1) BR8202159A (fr)
CA (1) CA1174228A (fr)
CS (1) CS235093B2 (fr)
DE (1) DE3115206C2 (fr)
ES (1) ES511412A0 (fr)
YU (1) YU78482A (fr)
ZA (1) ZA822565B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110255335A (zh) * 2019-06-25 2019-09-20 丁治龙 一种液压自锁制动的升降工具

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5330011A (en) * 1992-10-13 1994-07-19 The George E. Failing Company Free fall stroker apparatus and method
US5415379A (en) * 1993-03-19 1995-05-16 Hoyt; Reed W. Pneumatic winch
US5984276A (en) * 1998-09-29 1999-11-16 Tri-Motion Industries, Inc. Cable retraction speed limiter for air balancing hoist
JP3437167B2 (ja) 2000-12-05 2003-08-18 株式会社遠藤製餡 小豆を原料とする健康飲料及びその製造方法
SE0004747D0 (sv) * 2000-12-20 2000-12-20 Mtm I Aarjaeng Ab Lyftanordning
US6996911B1 (en) 2004-03-05 2006-02-14 Dinius Michael J Combination level and squaring tool
US7300036B2 (en) * 2004-03-05 2007-11-27 Dinius Michael J Pulley and hoist adapter for bolts all-thread rods
US20080023430A1 (en) * 2004-05-21 2008-01-31 Kjell Andreasson Lifter Provided with a Safety Stop
US9199830B2 (en) 2013-04-10 2015-12-01 Tony O'Brien Hoisting apparatus and method of use
US10059573B2 (en) * 2014-05-05 2018-08-28 Tri-Motion Industries, Inc. Double movable pulley load balancing hoist
EP3383786A4 (fr) * 2015-12-06 2019-08-07 Cameron Technologies Limited Système de levage mobile

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE808277C (de) * 1948-09-23 1951-07-12 Donald Philipps Smallpei Cosby Hydraulisch betaetigtes Hebezeug
US2772085A (en) * 1954-09-07 1956-11-27 Adiel Y Dodge Shock absorber
GB777963A (en) * 1954-07-30 1957-07-03 Campbell & Isherwood Ltd Improvements in or relating to hoists and like lifting or lowering apparatus
US3286989A (en) * 1965-10-19 1966-11-22 Ingersoll Rand Co Balancing hoist
US3368796A (en) * 1967-03-09 1968-02-13 Ingersoll Rand Co Control apparatus for balancing hoists
US3669411A (en) * 1970-03-26 1972-06-13 Lorne J Mckendrick Load balancer
US3675899A (en) * 1970-05-27 1972-07-11 Lorne J Mckendrick Hoist and balancing apparatus
FR2359065A1 (fr) * 1976-07-20 1978-02-17 Mifago Ag Appareil de levage
DE7934679U1 (de) * 1979-12-10 1980-04-30 Fischer, Gerhard, 7758 Meersburg Hebezeug

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537686A (en) * 1968-05-31 1970-11-03 Lorne J Mckendrick Hoist and balancing apparatus
US4194598A (en) * 1978-12-11 1980-03-25 Suozzo Leonard S Mechanical shock and sway arrestor
JPS5849742B2 (ja) * 1979-02-14 1983-11-07 日本発条株式会社 摩擦制振装置

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE808277C (de) * 1948-09-23 1951-07-12 Donald Philipps Smallpei Cosby Hydraulisch betaetigtes Hebezeug
GB777963A (en) * 1954-07-30 1957-07-03 Campbell & Isherwood Ltd Improvements in or relating to hoists and like lifting or lowering apparatus
US2772085A (en) * 1954-09-07 1956-11-27 Adiel Y Dodge Shock absorber
US3286989A (en) * 1965-10-19 1966-11-22 Ingersoll Rand Co Balancing hoist
US3368796A (en) * 1967-03-09 1968-02-13 Ingersoll Rand Co Control apparatus for balancing hoists
US3669411A (en) * 1970-03-26 1972-06-13 Lorne J Mckendrick Load balancer
US3675899A (en) * 1970-05-27 1972-07-11 Lorne J Mckendrick Hoist and balancing apparatus
FR2359065A1 (fr) * 1976-07-20 1978-02-17 Mifago Ag Appareil de levage
DE7934679U1 (de) * 1979-12-10 1980-04-30 Fischer, Gerhard, 7758 Meersburg Hebezeug

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110255335A (zh) * 2019-06-25 2019-09-20 丁治龙 一种液压自锁制动的升降工具

Also Published As

Publication number Publication date
BR8202159A (pt) 1983-12-20
AU8213682A (en) 1982-10-21
CA1174228A (fr) 1984-09-11
DE3115206A1 (de) 1982-11-18
DE3115206C2 (de) 1983-03-17
ES8303239A1 (es) 1983-02-16
YU78482A (en) 1986-12-31
EP0062810A3 (fr) 1983-06-22
JPS57180592A (en) 1982-11-06
ZA822565B (en) 1983-03-30
CS260282A2 (en) 1984-06-18
CS235093B2 (en) 1985-04-16
ES511412A0 (es) 1983-02-16
US4455013A (en) 1984-06-19

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19851001

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FISCHER, GERHARD

Inventor name: BERGER, HARALD, DIPL.-ING.