US3891095A - Removable counterweight mounting mechanism - Google Patents

Removable counterweight mounting mechanism Download PDF

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Publication number
US3891095A
US3891095A US462888A US46288874A US3891095A US 3891095 A US3891095 A US 3891095A US 462888 A US462888 A US 462888A US 46288874 A US46288874 A US 46288874A US 3891095 A US3891095 A US 3891095A
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US
United States
Prior art keywords
counterweight
platform
extending
recess
bore
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
US462888A
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English (en)
Inventor
William D Symmank
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.)
Case LLC
Original Assignee
JI Case Co
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 JI Case Co filed Critical JI Case Co
Priority to US462888A priority Critical patent/US3891095A/en
Priority to AU76010/74A priority patent/AU483877B2/en
Priority to ES432798A priority patent/ES432798A1/es
Priority to CA215,985A priority patent/CA1010824A/en
Priority to FR7441201A priority patent/FR2267974B1/fr
Priority to GB5393374A priority patent/GB1443250A/en
Priority to JP14493074A priority patent/JPS544521B2/ja
Priority to BR10545/74A priority patent/BR7410545A/pt
Priority to DE19752500817 priority patent/DE2500817A1/de
Application granted granted Critical
Publication of US3891095A publication Critical patent/US3891095A/en
Assigned to CASE CORPORATION, A CORP. OF DELAWARE reassignment CASE CORPORATION, A CORP. OF DELAWARE CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: J. I. CASE COMPANY, A CORP. OF DELAWARE
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

  • a construction machine having a platform rotatable thereon and supporting a boom is disclosed herein.
  • a counterweight is removably secured to the platform by mounting means that includes a pair of bearing hangers received in recesses in the counterweight with removable pins extending through counterbores in the counterweight and openings in the bearing hangers.
  • Adjustable positioning means on the platform engage the counterweight to accurately align the counterbores and the openings.
  • the construction machine also includes hydraulic rams that are carried by the platform and have hooks on extensible elements which receive permanent cross pins located in the recesses so that the hydraulic rams can be utilized to raise and lower the counterweight with respect to the platform.
  • a counterweight is supported on a platform with a minimum number of parts that are readily removable and access to these parts is available from the side of the counterweight so that there is little probability of the counterweight inadvertently falling onto a person while it is being removed.
  • the supporting mechanism for the counterweight includes primary support means consisting of a pair of hangers that are supported on the platform of a construction machine, such as an excavator, having a boom pivoted on the platform or turntable.
  • the respective hangers are received into recesses in the counterweight and the counterweight has counterbores extending from opposite end walls across the recesses while the bearing hangers have openings which are aligned with the counterbores by adjustable positioning means so that support pins can readily be inserted and removed with a minimum amount of effort.
  • the hangers and counterbores are positioned so that the removable pins are located between the platform and the center of gravity for the mass of the counter-weight so that the counterweight tends to swing towards the platform to its finally fixed position.
  • the counterweight can be held in this fixed position by one or more removable bolts.
  • the counterweight can readily be removed from the machine by hydraulic rams that are connected to the platform and have hooks on the ends of the extensible elements which are capable of being received into the recesses and receive permanent pins located in the recesses so that the counterweight can be raised and lowered by the hydraulic rams.
  • the hydraulic rams form no part of the support for the counterweight on the platform.
  • FIG. 1 shows a side elevational view of a construction machine, such as an excavator
  • FIG. 2 is an enlarged end view, as viewed along line 2-2 of FIG. 1 showing the counterweight and part of the support structure;
  • FIG. 3 is a vertical section as viewed along line 3-3 of FIG. 2;
  • FIG. 4 is a fragmentary vertical section as viewed along line 4-4 of FIG. 2;
  • FIG. 5 is a fragmentary sectional along line 5-5 of FIG. 3.
  • FIG. I of the drawings discloses a construction machine 10, such as an excavator, which may have the present invention incorporated therein.
  • the excavator may be of the type disclosed in US. Pat. No. 3,680,722, assigned to the assignee of the present invention.
  • Excavator 10 includes a vehicle or support 12 for supporting a turntable I4, which is rotatable about a vertical axis.
  • Turntable 14 has a boom 16 pivotally supported for movement about horizontal pivot pin 18 and the outer end of boom 16 supports an excavating device 20.
  • the counterweight is removably supported on the platform or turntable in such a manner that it can readily be removed from the platform and lowered onto a transport vehicle so that the counterweight and construction machine can be transported separately.
  • the primary support for the counterweight on the platform consists of a pair of pins that are accessible from the side of the counterweight so that the unit can easily be removed.
  • the pins are positioned so that the weight of the counterweight will tend to swing or pivot the counterweight about the pins towards the platform. Additional secondary securing means may then be used to prevent any swinging movement of the counterweight during use of the implement.
  • platform 14 (FIG. 3) has a substantially verti cal portion 32 defining a substantially vertical wall 34 having a pair of transversely spaced horizontally extending arms 36 at the upper end thereof.
  • a pair of brackets or bearing hangers 38 extend from vertical wall 34 at transversely spaced locations and each of the bearing hangers has an opening 40 therein. Openings 40 may have bushings 42 located therein for supporting a pin that will be described later.
  • Brackets 38 are received into transversely aligned recesses 44 that extend from one corner of counterweight 30.
  • Counterweight 30 also has a pair of bores 46 which extend from the respective end walls 48. As shown in FIG, 5, bores 46 each have an enlarged portion 50 adjacent end wall 48 and a reducing portion 52 which extends across recess 44 and has a tapered portion therebetween.
  • Recesses 44 have outwardly tapering wall portions 45 at the upper ends for a purpose that will be described later.
  • the primary support means for counterweight 30 also includes removable pin means that are received into bores or counterbores 46 and extend through openings 40 in hangers 38.
  • removable pin means 54 are designed to substantially reduce the weight required to be manipulated during removal and attachment of counterweight 30 to turntable 14. It will be appreciated that the size of the pins must be substantial in order to support the large mass that is embodied in the counterweight. For example, the pins may be on the order of two to three inches in diameter so that a long pin. several feet in length, would be extremely heavy and difficult to manipulate.
  • each removable pin means 54 has a first portion or pin 56 that is substantially equal in diameter to the diameter of reduced portion 52 of the counterbore 46 so as to produce a tight fit in counterbore 46 as well as in bushing 42 that forms part of opening 40.
  • the remainder of the removable pin means 54 is substantially smaller in size and acts as a handle portion 58. Since the handle portion 58 does not support any of the weight and thus is not a functional part of the support, handle portion 58 can be formed from a thin rod and have a gripping portion at the outer end thereof.
  • removable pin means 54 is releasably retained in counterbore 46 by suitable latch means (not shown) to prevent inadvertent removal during operation of the vehicle.
  • the primary support means so far described is sufficient to support the entire weight of the counterweight in a substantially fixed position with respect to turntable 14.
  • An inspection of FIG. 3 reveals that the removable pin means 54, more specifically the pin portion 56, is located adjacent one upper inner corner of the counterweight, as viewed with respect to the turntable 14. This will locate the center of gravity of the counter weight outside or to the right, as viewed in FIG. 1, of support means consisting of brackets or hangers 38 and movable pin means 54.
  • the counterweight will tend to swing or pivot against vertical wall 34 and be held there by the weight or mass of the counterweight.
  • Each releasable bolt means 60 (FIGS. 4 and consists of a bolt 62 which extends through an enlarged opening 64 adjacent the lower end of vertical wall 34 with a nut 66 and a washer 68 at the outer end of bolt 62.
  • Bolt 62 extends through a slot 70 extending from bottom wall 72 of counterweight 30.
  • counterweight mounting means also includes adjustable positioning means to accurately position the counterweight with respect to the platform or turntable.
  • adjustable positioning means to accurately position the counterweight with respect to the platform or turntable.
  • adjustable position means consists of first and second studs 82 and 84 that respectively, extend through a horizontal wall on arm 36 positioned above top wall 76 of counterweight 30 and vertical wall 34 adjacent the upper end thereof. Studs 82 and 84 have lock nuts 86 thereon so that the position of the free end of the respective studs can be accurately controlled.
  • the free ends of the studs are adapted to engage top wall 76 and side wall 74 of counterweight 30 at a location in close proximity to counterbores 46.
  • the mounting means for counterweight 30 also incorporates separate means for raising and lowering counterweight 30 with respect to platform or turntable 14.
  • the counterweight is removed and mounted at a remote location where the only equipment available is the vehicle itself.
  • many of the prior art units have developed elaborate schemes whereby the counterweight may be removed from the platform or turntable and supported on the vehicle frame so that the turntable can be rotated and the boom utilized for removing the counterweight and transferring it to a transport vehicle. These devices have become extremely complicated, adding to the overall cost of a removable counterweight.
  • the mounting means for counterweight 30 also incorporates separate fluid ram means for raising and lowering the counterweight with respect to the turntable.
  • the fluid ram means consists of first and second fluid rams 90 that each have cylinders or first elements 92 mounted by trunions 94 on arms 36 so that the fluid rams are aligned with the respective recesses 44 in counterweight 30.
  • the respective cylinders or first elements have piston rods or second elements 96 movable relative thereto with the free ends of piston rod having hooks 98 supported thereon.
  • fluid rams 90 are aligned with recesses 44 so that at least the piston rods 96 can extend into the recesses.
  • Hooks 98 are adapted to receive pins 100 that extend across recesses 44. These pins are pref erably permanently mounted within the counterweight during the casting operation. Thus, the open hooks 98 and the permanent pins 100 again eliminate the need for accurate alignment of the counterweight with respect to the cylinder before the two can be interconnected.
  • the unique pri mary and secondary support means for the counterweight has a number of advantages.
  • the primary support means consists of two removable pins which are readily accessible from the sides or opposite ends of the counterweight so that these may be removed without the operator being underneath the counterweight.
  • the removable toggle bolts 60 can be loosened and pivoted downwardly before the primary support means are removed. This means that the counterweight is fully supported even after the removable bolt means 60 are removed.
  • the primary and secondary support means are the only support for the unit during the operation of the vehicle so that there is no weight or load placed on the fluid ram 90 except when the counterweight is removed or attached.
  • the adjustable positioning means 80 eliminates the need for any machining operation to insure that the various parts of the counterweight are accurately positioned with respect to platform 14.
  • the relative point contact between the two position adjusting means 80 can easily be adjusted the first time the counterweight is mounted onto platform 14 and thereafter, this accurate alignment for the counterweight with respect to platform 14 remains the same.
  • said bore having an enlarged portion adjacent said one end wall and a reduced portion extending across said recess; and removable pin means received into said bore and extending through said opening in said hanger for supporting said counterweight on said platform, said removable pin means including a pin portion corresponding in size to said reduced portion and a handle portion of a different size connected to said pin portion.
  • said means mounted on said platform includes first and second fluid rams respectively aligned with said recesses, each fluid ram having a first element connected to said platform and a second element, each second element having a hook, said permanent pins being positioned to be received into said hooks on said second elements.
  • each bore has a tapered portion between said enlarged portion and said reduced portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Jib Cranes (AREA)
  • Pivots And Pivotal Connections (AREA)
US462888A 1974-04-22 1974-04-22 Removable counterweight mounting mechanism Expired - Lifetime US3891095A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US462888A US3891095A (en) 1974-04-22 1974-04-22 Removable counterweight mounting mechanism
AU76010/74A AU483877B2 (en) 1974-12-03 Removable counterweight mounting mechanism
ES432798A ES432798A1 (es) 1974-04-22 1974-12-11 Perfeccionamientos en maquinas excavadoras y similares des- tinadas a la construccion.
FR7441201A FR2267974B1 (es) 1974-04-22 1974-12-13
CA215,985A CA1010824A (en) 1974-04-22 1974-12-13 Removable counterweight mounting mechanism
GB5393374A GB1443250A (en) 1974-04-22 1974-12-13 Machines having load-supporting booms
JP14493074A JPS544521B2 (es) 1974-04-22 1974-12-17
BR10545/74A BR7410545A (pt) 1974-04-22 1974-12-17 Mecanismo de montagem de contrapeso removivel
DE19752500817 DE2500817A1 (de) 1974-04-22 1975-01-10 Baumaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US462888A US3891095A (en) 1974-04-22 1974-04-22 Removable counterweight mounting mechanism

Publications (1)

Publication Number Publication Date
US3891095A true US3891095A (en) 1975-06-24

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ID=23838140

Family Applications (1)

Application Number Title Priority Date Filing Date
US462888A Expired - Lifetime US3891095A (en) 1974-04-22 1974-04-22 Removable counterweight mounting mechanism

Country Status (8)

Country Link
US (1) US3891095A (es)
JP (1) JPS544521B2 (es)
BR (1) BR7410545A (es)
CA (1) CA1010824A (es)
DE (1) DE2500817A1 (es)
ES (1) ES432798A1 (es)
FR (1) FR2267974B1 (es)
GB (1) GB1443250A (es)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4081081A (en) * 1975-10-23 1978-03-28 The Manitowoc Company, Inc. Demountable gantry, boom hoist and counterweight
US4363412A (en) * 1980-08-14 1982-12-14 Kidde, Inc. Crane counterweight and handling method
US4402413A (en) * 1981-11-19 1983-09-06 J. I. Case Company Counterweight arrangement
US4679336A (en) * 1984-12-01 1987-07-14 J. C. Bamford Excavators Limited Earth moving machine
DE3611593A1 (de) * 1986-04-07 1987-10-08 Harnischfeger Gmbh Verfahren zum selbsttaetigen anhaengen und ablegen eines ausleger-gegengewichtes von hydraulik-fahrzeugkranen und einrichtung zum durchfuehren des verfahrens
FR2648449A1 (es) * 1989-06-19 1990-12-21 Caterpillar Mitsubishi Ltd
US5141195A (en) * 1989-06-19 1992-08-25 Shin Caterpillar Mitsubishi Ltd. Counterweight removal device
US5199583A (en) * 1991-07-20 1993-04-06 Faun Gmbh Crane truck
WO1994021549A1 (en) * 1993-03-18 1994-09-29 American Crane Corporation Apparatus and method for handling a counterweight
US5524777A (en) * 1994-02-23 1996-06-11 Fried. Krupp Ag Hoesch-Krupp Lifting apparatus for a transfer device
US6050430A (en) * 1997-10-31 2000-04-18 Grove U.S. L.L.C. Automatic leveling and synchronization system for counterweight removal and installation
US20070221600A1 (en) * 2003-03-11 2007-09-27 Davis Daniel E Pipelayer and method of loading pipelayer or excavator for transportation
US20080253875A1 (en) * 2007-04-04 2008-10-16 Hitachi Sumitomo Heavy Industries Construction Crane Co., Ltd. Installation Device for Counterweight
EP2423150A1 (de) * 2010-08-24 2012-02-29 Manitowoc Crane Group France SAS Einstellbares Fußlager
US20130001492A1 (en) * 2011-06-30 2013-01-03 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit for counterweight attaching/detaching device
US20180195253A1 (en) * 2015-06-18 2018-07-12 Caterpillar Sarl Counterweight supporting structure for construction machine
US20190169001A1 (en) * 2016-05-04 2019-06-06 Liebherr-Werk Ehingen Gmbh Mobile crane comprising a ballast receiving device and method for ballasting a mobile crane
US10343876B2 (en) * 2016-06-13 2019-07-09 Liebherr-Werk Ehingen Gmbh Mobile crane
CN112407251A (zh) * 2020-10-28 2021-02-26 成都飞机工业（集团）有限责任公司 一种火箭弹射无人机配重重心调整方法
US11542682B2 (en) 2020-04-14 2023-01-03 Deere & Company Counterweight removal protection system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2325089A (en) * 1941-09-08 1943-07-27 Thew Shovel Co Removable counterweight for excavating and load handling machines
US3135404A (en) * 1962-06-27 1964-06-02 Ware Machine Works Inc Tractor mounted counterweight
US3251479A (en) * 1964-02-17 1966-05-17 Bucyrus Erie Co Removable counterweight apparatus
US3278045A (en) * 1964-03-09 1966-10-11 American Hoist & Derrick Co Counterweight support mechanism
US3375048A (en) * 1966-11-21 1968-03-26 Link Belt Co Counterweight mounting mechanism
US3375021A (en) * 1966-05-20 1968-03-26 Bucyrus Erie Co Counterweight removal device
US3533524A (en) * 1968-10-28 1970-10-13 Bucyrus Erie Co Counterweight removal arrangement for hydraulic excavators or the like

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2325089A (en) * 1941-09-08 1943-07-27 Thew Shovel Co Removable counterweight for excavating and load handling machines
US3135404A (en) * 1962-06-27 1964-06-02 Ware Machine Works Inc Tractor mounted counterweight
US3251479A (en) * 1964-02-17 1966-05-17 Bucyrus Erie Co Removable counterweight apparatus
US3278045A (en) * 1964-03-09 1966-10-11 American Hoist & Derrick Co Counterweight support mechanism
US3375021A (en) * 1966-05-20 1968-03-26 Bucyrus Erie Co Counterweight removal device
US3375048A (en) * 1966-11-21 1968-03-26 Link Belt Co Counterweight mounting mechanism
US3533524A (en) * 1968-10-28 1970-10-13 Bucyrus Erie Co Counterweight removal arrangement for hydraulic excavators or the like

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4081081A (en) * 1975-10-23 1978-03-28 The Manitowoc Company, Inc. Demountable gantry, boom hoist and counterweight
US4363412A (en) * 1980-08-14 1982-12-14 Kidde, Inc. Crane counterweight and handling method
US4402413A (en) * 1981-11-19 1983-09-06 J. I. Case Company Counterweight arrangement
US4679336A (en) * 1984-12-01 1987-07-14 J. C. Bamford Excavators Limited Earth moving machine
DE3611593A1 (de) * 1986-04-07 1987-10-08 Harnischfeger Gmbh Verfahren zum selbsttaetigen anhaengen und ablegen eines ausleger-gegengewichtes von hydraulik-fahrzeugkranen und einrichtung zum durchfuehren des verfahrens
EP0240652A1 (de) * 1986-04-07 1987-10-14 Harnischfeger GmbH Vorrichtung zum Anhängen und Ablegen eines Ausleger-Gegengewichtes von Hydraulik-Fahrzeugkranen
FR2648449A1 (es) * 1989-06-19 1990-12-21 Caterpillar Mitsubishi Ltd
US5141195A (en) * 1989-06-19 1992-08-25 Shin Caterpillar Mitsubishi Ltd. Counterweight removal device
US5199583A (en) * 1991-07-20 1993-04-06 Faun Gmbh Crane truck
WO1994021549A1 (en) * 1993-03-18 1994-09-29 American Crane Corporation Apparatus and method for handling a counterweight
US5598935A (en) * 1993-03-18 1997-02-04 American Crane Corporation Frame structure for lift crane machinery
US5524777A (en) * 1994-02-23 1996-06-11 Fried. Krupp Ag Hoesch-Krupp Lifting apparatus for a transfer device
US6050430A (en) * 1997-10-31 2000-04-18 Grove U.S. L.L.C. Automatic leveling and synchronization system for counterweight removal and installation
US20070221600A1 (en) * 2003-03-11 2007-09-27 Davis Daniel E Pipelayer and method of loading pipelayer or excavator for transportation
US20080253875A1 (en) * 2007-04-04 2008-10-16 Hitachi Sumitomo Heavy Industries Construction Crane Co., Ltd. Installation Device for Counterweight
JP2008254860A (ja) * 2007-04-04 2008-10-23 Hitachi Sumitomo Heavy Industries Construction Crane Co Ltd カウンタウエイトの取付装置
US7658293B2 (en) * 2007-04-04 2010-02-09 Hitachi Sumitomo Heavy Industries Construction Crane Co., Ltd. Installation device for counterweight
WO2008141095A1 (en) * 2007-05-09 2008-11-20 Davis Daniel E Pipelayer and method of loading pipelayer or excavator for transportation
EP2423150A1 (de) * 2010-08-24 2012-02-29 Manitowoc Crane Group France SAS Einstellbares Fußlager
CN102381629A (zh) * 2010-08-24 2012-03-21 马尼托沃克起重机集团（法国）公司 可调节基脚支承
CN102381629B (zh) * 2010-08-24 2014-07-02 马尼托沃克起重机集团（法国）公司 可调节基脚支承
US20130001492A1 (en) * 2011-06-30 2013-01-03 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit for counterweight attaching/detaching device
US8702061B2 (en) * 2011-06-30 2014-04-22 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit for counterweight attaching/detaching device
US20180195253A1 (en) * 2015-06-18 2018-07-12 Caterpillar Sarl Counterweight supporting structure for construction machine
US10590626B2 (en) * 2015-06-18 2020-03-17 Caterpillar Sarl Counterweight supporting structure for construction machine
US20190169001A1 (en) * 2016-05-04 2019-06-06 Liebherr-Werk Ehingen Gmbh Mobile crane comprising a ballast receiving device and method for ballasting a mobile crane
US10850951B2 (en) * 2016-05-04 2020-12-01 Liebherr-Werk Ehingen Gmbh Mobile crane comprising a ballast receiving device and method for ballasting a mobile crane
US10343876B2 (en) * 2016-06-13 2019-07-09 Liebherr-Werk Ehingen Gmbh Mobile crane
US11542682B2 (en) 2020-04-14 2023-01-03 Deere & Company Counterweight removal protection system
CN112407251A (zh) * 2020-10-28 2021-02-26 成都飞机工业（集团）有限责任公司 一种火箭弹射无人机配重重心调整方法
CN112407251B (zh) * 2020-10-28 2023-01-10 成都飞机工业（集团）有限责任公司 一种火箭弹射无人机配重重心调整方法

Also Published As

Publication number Publication date
DE2500817A1 (de) 1975-11-06
BR7410545A (pt) 1976-06-22
AU7601074A (en) 1976-06-03
FR2267974B1 (es) 1978-11-03
FR2267974A1 (es) 1975-11-14
JPS544521B2 (es) 1979-03-07
CA1010824A (en) 1977-05-24
ES432798A1 (es) 1977-03-01
JPS50139501A (es) 1975-11-07
GB1443250A (en) 1976-07-21

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AS Assignment

Owner name: CASE CORPORATION, A CORP. OF DELAWARE

Free format text: CHANGE OF NAME;ASSIGNOR:J. I. CASE COMPANY, A CORP. OF DELAWARE;REEL/FRAME:005741/0138

Effective date: 19891229