US3570691A - Protection device for a control ram - Google Patents

Protection device for a control ram Download PDF

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Publication number
US3570691A
US3570691A US792253*A US3570691DA US3570691A US 3570691 A US3570691 A US 3570691A US 3570691D A US3570691D A US 3570691DA US 3570691 A US3570691 A US 3570691A
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US
United States
Prior art keywords
ram
jib
bars
pair
implement
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
US792253*A
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English (en)
Inventor
Gabriel L Guinot
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.)
Poclain SA
Original Assignee
Poclain SA
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 Poclain SA filed Critical Poclain SA
Application granted granted Critical
Publication of US3570691A publication Critical patent/US3570691A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts

Definitions

  • the present invention relates to a mechanical earthworking machine, such as a mechanical excavator, of the kind comprising a jib articulated to the turret of said machine and having articulated thereto an earthworking implement, such as a mechanical shovel, bucket or scoop, and power operated rams for operating said jib and said implement.
  • a mechanical earthworking machine such as a mechanical excavator
  • an earthworking implement such as a mechanical shovel, bucket or scoop
  • power operated rams for operating said jib and said implement.
  • the object of the present invention is to provide means for protecting the rams of earthworking machine against such damage and with this object in view a mechanical earthworking machine is provided with means for protecting the operating rams, said means comprising a pairof bars pivotally connected together end to end and pivotally connected at their other ends respectively to members to which the two parts of the ram are connected, the arrangement being such that said ram is located between said jib and said pair of bars.
  • the ram protecting means comprises a pair of bars pivotally connected together end to end and pivotally connected at their opposite ends respectively to said jib and to a lever which is articulated to said jib and which effect pivotal movement of said implement under the action of said ram, said pair of bars, lever and jib together defining a polygon within which said ram is located.
  • FIG. l is a side elevation of a mechanical earthworking machine provided with ram protecting means according to the invention, the ram being shown in its extended position;
  • FIG. 2 is a similar view of the jib of the machine showing the ram in its retracted position.
  • a mechanical excavator comprises a jib consisting of two arms 2 and 3 articulated to each other at 4.
  • Arm 2 is articulated to the turret 6 of the machine and is operated by a first power operated ram 5, arranged between the turret 6 and the arm 2, and a second power operated ram 7 arranged between the two arms 2 and 3 of the jib.
  • Pivotally mounted at 9 on the outer free end of arm 3 is an earthworking implement in the form of a bucket 8.
  • the implement is operated by a power operated ram l2, 13 through a lever ll) one end of which is pivotally connected with arm 3 of the jib and the other end is connected with the bucket 8 through a link 10 a.
  • the piston rod 12 of the ram is pivotally connected to lever 10 at its outer end at a point ll'intermediate the ends of said lever and the cylinder 13 of the ram is pivotally connected at 117 to the arm 3 of the jib.
  • the ram 12,13 is protected by means 14 comprising a pair of bars 14a and 14b pivotally connected together end to end at 15 and pivotally connected at Ill and 16 by their other ends to the lever 10 and the arm 3 of the jib respectively.
  • the ram 12,13 is located between the jib arm 3 and the pair of protecting bars 14a, 14b within a polygon defined by said pair of arms, the lever 10 and jib arm 3 and is thereby protected by said pair of bars 14a, 14b against impact with obstacles or extraneous objects beneath ram 12,13 when the jib 2,3 is lowered.
  • the bar 14a is pivotally connected to lever 10 about the same axis H as the piston rod 12 of the ram is connected to said lever and the bar 14b is pivoted to a bracket integral with the arm 3 of the jib about an axis 16 which is parallel and closely adjacent to the axis 17 about which the cylinder'l3 of the ram is pivoted to said jib arm 3.
  • the dimensions and arrangement of the protecting bars 14a and 14b are spch that firstly the space between said pair of bars and the ib arm 3 15 as small as possible whilst enabling operation of the ram between the two limits of its stroke without said ram fouling said pair of bars and secondly the end 18 of the bar 14b serves the additional purpose of forming an abutment or stop for the bucket 8 to limit the pivotal movement of said bucketwhenthe ram 12,13 is fully retracted as illustrated in FIG. 2.
  • FIG. 2 In the embodiment shown in FIG.
  • Means for protecting a control ram having a rod and cylinder respectively pivotally connected to first and second articulated members comprising part of a jib of a mechanical earthworking machine for controlling the operation of said jib or an earthworking implement articulated to said jib, said means comprising a pair of bars pivotally connected together end to end and pivotally connected at their other ends respectively to said first and second articulated members to which said rod and cylinder of the ram are connected, the arrangement being such that said ram is located between said jib and said pair of bars.
  • Means for protecting a ram for controlling the operation of an earthworking implement articulated to the jib of a mechanical earthworking machine wherein said means comprise a pair of bars pivotally connected together end to end and pivotally connected at their opposite ends respectively to said jib and to a lever which is articulated to said jib and which effect pivotal movement of said implement under the action of said ram, said pair of bars, lever and jib together defining a polygon within which said ram is located.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Shovels (AREA)
US792253*A 1968-01-26 1969-01-21 Protection device for a control ram Expired - Lifetime US3570691A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR137578 1968-01-26

Publications (1)

Publication Number Publication Date
US3570691A true US3570691A (en) 1971-03-16

Family

ID=8645159

Family Applications (1)

Application Number Title Priority Date Filing Date
US792253*A Expired - Lifetime US3570691A (en) 1968-01-26 1969-01-21 Protection device for a control ram

Country Status (4)

Country Link
US (1) US3570691A (enrdf_load_stackoverflow)
ES (1) ES362919A1 (enrdf_load_stackoverflow)
FR (1) FR1568877A (enrdf_load_stackoverflow)
GB (1) GB1234173A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952890A (en) * 1974-03-12 1976-04-27 Hy-Mac Limited Hydraulically operated shovels
US4043469A (en) * 1975-12-29 1977-08-23 Lewis Daniel D Apparatus for protecting overhead cables
US4044903A (en) * 1975-03-19 1977-08-30 Marion Power Shovel Company, Inc. Specific linkage arrangement for bucket control
US4074820A (en) * 1974-11-08 1978-02-21 Caterpillar Tractor Co. Shovel linkage for a hydraulic excavator
US5015148A (en) * 1989-01-23 1991-05-14 Ford New Holland, Inc. Loader mounting frame

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4381167A (en) * 1981-04-27 1983-04-26 Deere & Company Excavator bucket linkage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2742162A (en) * 1950-09-21 1956-04-17 Mandt Mfg Company Loading machine
US2746625A (en) * 1951-08-09 1956-05-22 Eimco Corp Pivoted bucket loader
US3243063A (en) * 1965-01-07 1966-03-29 Bucyrus Erie Co Variable pitch excavator dipper mounting

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2742162A (en) * 1950-09-21 1956-04-17 Mandt Mfg Company Loading machine
US2746625A (en) * 1951-08-09 1956-05-22 Eimco Corp Pivoted bucket loader
US3243063A (en) * 1965-01-07 1966-03-29 Bucyrus Erie Co Variable pitch excavator dipper mounting

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952890A (en) * 1974-03-12 1976-04-27 Hy-Mac Limited Hydraulically operated shovels
US4074820A (en) * 1974-11-08 1978-02-21 Caterpillar Tractor Co. Shovel linkage for a hydraulic excavator
US4044903A (en) * 1975-03-19 1977-08-30 Marion Power Shovel Company, Inc. Specific linkage arrangement for bucket control
US4043469A (en) * 1975-12-29 1977-08-23 Lewis Daniel D Apparatus for protecting overhead cables
US5015148A (en) * 1989-01-23 1991-05-14 Ford New Holland, Inc. Loader mounting frame

Also Published As

Publication number Publication date
FR1568877A (enrdf_load_stackoverflow) 1969-05-30
DE1903669B2 (de) 1977-05-05
GB1234173A (enrdf_load_stackoverflow) 1971-06-03
ES362919A1 (es) 1970-11-16
DE1903669A1 (de) 1970-01-29

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