US3645021A - Arrangement in loader buckets and the like provided with digging blades - Google Patents

Arrangement in loader buckets and the like provided with digging blades Download PDF

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Publication number
US3645021A
US3645021A US763850A US3645021DA US3645021A US 3645021 A US3645021 A US 3645021A US 763850 A US763850 A US 763850A US 3645021D A US3645021D A US 3645021DA US 3645021 A US3645021 A US 3645021A
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US
United States
Prior art keywords
spring
shell
drive mechanism
teeth
leaf spring
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
US763850A
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English (en)
Inventor
John Teodor Sonerud
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.)
SVENSKA HYMAS AB
Original Assignee
SVENSKA HYMAS AB
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Filing date
Publication date
Priority claimed from SE13364/67A external-priority patent/SE328529B/xx
Priority claimed from SE06748/68A external-priority patent/SE329814B/xx
Application filed by SVENSKA HYMAS AB filed Critical SVENSKA HYMAS AB
Application granted granted Critical
Publication of US3645021A publication Critical patent/US3645021A/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
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/402—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors
    • E02F3/405—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors using vibrating means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S37/00—Excavating
    • Y10S37/904—Vibration means for excavating tool

Definitions

  • ABSTRACT An arrangement for a loader bucket provided with digging teeth which are reciprocably displaceable in their longitudinal direction to create a picking action of the teeth against the surface to be broken and penetrated.
  • the apparatus includes a leaf-spring arrangement which is in engagement with and actuated by a drive mechanism so as to create an oscillating movement of the teeth in the direction of swing.
  • One end of the spring is connected to hammer means adapted to actuate, by means of impact, one or more digging teeth in a direction of movement'away from the loader bucket.
  • the present invention is concerned with an arrangement in which only a relatively small driving force is required to provide a relatively powerful picking action of one of the teeth or breakers of the bucket, and is mainly characterized in that said arrangement includes a set of leaf springs, the one end of which is connected with a drive mechanism for creating an oscillatory movement in the swinging direction of the end of the spring unit, while the other end of said set of springs is connected to a hammer means, adapted to actuate impactwise one or more bucket teeth in a direction of movement away from the loader bucket.
  • FIG. 1 shows an arrangement according to the invention adapted to a loader bucket seen from the'side and in section
  • FIG. 2 is a plan view, partly in section, of the arrangement in FIG. 1, and
  • FIG. 3 shows in side view another embodiment of the arrangement illustrated in FIG. I.
  • FIG. 1 comprises a loader bucket, generally indicated by the reference numeral 1, and presenting a bucket cavity 2, teeth or breakers 3 and a closed space 4, defined by the outer walls 5 of the bucket and the inner wall 6 of the bucket space 2.
  • Attached to a portion of one outer wall 5 are attachment flanges 7, to facilitate attachment of the loader bucket to a jib or the like.
  • Mounted at the inside of the inner wall 6 within the closed space 4 are two identical groups of leaf springs 8, each of which is anchored in the center thereof to said inner wall through the intermediary of a spring support frame 9.
  • the frame 9 supports centrally arranged transversely extending pins 10 and 11, each of which projects out on its respective side of the support frame, perpendicular to the longitudinal direction of the respective spring units.
  • the pins support ball bearings 12,13 for mounting respective pivot arms 14,15, each of which branches into two legs 14',l4" and 15',15" respectively, the ends of which
  • An alternative embodiment for imparting a picking or hacking movement to the teeth or breakers of a loader bucket whilst, for instance, the bucket digs into the ground, is shown in FIG. 3.
  • This embodiment comprises a loader bucket 32 which is pivotally supported on a jib or arm 33.
  • the digging movements of the bucket are obtained with the assistance of a hydraulic cylinder 34, located between the jib 33 and the front portion of the bucket.
  • the bucket is provided with teeth or breakers 35, arranged on the end of a piston rod 36 which carries a piston 37 at its upper end is capable of sliding between two wall portions, an inner portion 38 and-an outer portion 39.
  • the spring support frame 9 is also provided with bearing means 21,22 for two lever arms 23,24 respectively, which extend parallel with respective sets of springs and are rigidly connected to a bracket 25 at the other end 26 of the respective spring unit 8.
  • the bracket 25 includes a pivot pin 27, by
  • the shaft 30 is driven by a chain 32 of a hydraulic motor '33.
  • the wall portion 39 forms the front, outer restricting wall of the loader bucket and merges into an upper portion 40 which forms the upper outer wall of the bucket.
  • the wall portion 38 merges into a wall portion 41 which extends parallel to the wall portion 40, wherewith the wall portions 38 and 41 from two of the inner defining surfaces of the bucket.
  • the wall portions 40 and 41 are connected at their outer ends with a short wall 42.
  • the lower ends of the wall portions 38 and 39 are provided with guides 43 and 44, respectively, for slidably guiding the inner portions of the teeth or breakers 35.
  • a coil spring 45 Arranged on the piston rod 35 between the piston 37 and the guides 43, 44 is a coil spring 45.
  • a hammer means 46 Disposed in the same slide path as the piston 37 is a hammer means 46, adapted to actuate the upper surface of piston 37, and thus the teeth or breakers 35, impactwise.
  • the piston 46 is connected by means of a linking member 47 to a strong leaf spring 48, which in practice comprises a set of springs as in the previously described embodiment.
  • the other end of the spring or set of springs 48 is fixed to a fixed bracket 49 attached'to the short wall 42.
  • the spring 48 is adapted to be urged by a stationary abutment 50 against the surface of a rotatable eccentric 51 which is mounted on a drive shaft 52, which in turn is connected to some suitable power source.
  • the spring-mass of the system has a natural frequency. If the arrangement is operated undisturbed at the critical speed of the drive mechanism the amplitude of the hammer means becomes'unlimited, and the spring may finally break. In tests carried out in practice and drive mechanism has been driven at a speed of S00 revolutions per minute. Calculations show that the greatest impact forces are obtained when operating just above the critical speed.
  • the spring should be sufficiently stiff to lift the hammer at the right moment, i.e., upon completion of a hammering stroke.
  • a spring device of the aforementioned type is linear, and hence must be adapted to a mean value of all three conditions. Furthermore, with regard to the desired condition of natural oscillation it has a relatively limited range of speed in which good functioning can be obtained. Practical tests and experiments with the embodiment of FIGS. 1 and 2 have shown that with a spring unit of total length 885 mm. and a length of 412.5 mm. between the engagement point of the hammer means with the center of the spring unit, a largest thickness of I12 mm. a speed of 700 revolutions per minute has been reached as the idealistic speed, with a crank radius of the crank stub 29 of 35 mm., a length of 155 mm. on the connecting rod 29, a hammer means weighing 12.6 kg.
  • the present invention provides an arrangement in loader buckets which, with regard to method of operation and construction, are muchsuperior to hitherto known loader bucket arrangements provided with vibratory, picking teeth.
  • the arrangement is also relatively inexpensive to install, and requires but small space in the bucket.
  • one end of the spring can be actuated by a reciprocating piston-cylinder-arrangement instead of the shown eccentric or crank connecting rod mechanism.
  • the crank connecting rod mechanism can be adapted to actuate the end 26 of the spring unit 8 through some suitable fitting and the hammer means 16 can be attached direct to end 18 of the said spring.
  • the bucket cavity 2 and 32 shown in the drawings can, of course, be made larger or smaller according to requirements.
  • An arrangement in excavating machines having a material moving shell provided with digging teeth which are reciprocatingly displaceable in their longitudinal direction to create picking or hacking action of the teeth against the surface to be broken and penetrated comprising in combination: a drive mechanism, a leaf-spring having a first portion secured at a fixed location on the shell and having a second portion which is in engagement with and actuated by said drive mechanism so as to flex said spring and thereby create an oscillating movement of one end of said spring remote from said first and second portions, and hammer means, said one end of the spring engaging the hammer means, the hammer means being adapted to actuate impactwise one or more of the digging teeth in a direction of movement away from the shell.
  • each pivot arm comprises two leg members, at the ends of which is connected the hammer means.
  • the drive mechanism comprises a crank mechanism, the connecting rod of which is connected with said bracket fitting and adapted to be drive by a suitable motor.
  • An arrangement in a material moving shell for excavating machines provided with digging teeth which are reciprocatingly displaceable in their longitudinal direction with respect to the shell to create picking and hacking action of the teeth against the surface to be broken and penetrated and having a leaf spring means which is in engagement with and actuated by a drive mechanism to create an oscillating movement in the direction of swing of the ends of the leaf spring means, comprising the improvement wherein one end of said leaf spring means is connected to a hammer means adapted to actuate impactwise one or more digging teeth in a direction of movement away from the shell and the other end of said leaf spring means is connected to the drive mechanism, mounting means connected to said spring means at a point disposed between the ends thereof for attaching said spring means to said shell, a lever member pivotally connected between said drive mechanism and said mounting means, one end of said lever member being pivotally connected to said mounting means substantially adjacent said point of attachment, the other end of said lever member being pivotally connected to said drive mechanism, and said other end of said leaf spring means being disposed in engagement with said lever member

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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)
  • Earth Drilling (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Shovels (AREA)
US763850A 1967-09-28 1968-09-30 Arrangement in loader buckets and the like provided with digging blades Expired - Lifetime US3645021A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE13364/67A SE328529B (de) 1967-09-28 1967-09-28
SE06748/68A SE329814B (de) 1968-05-17 1968-05-17

Publications (1)

Publication Number Publication Date
US3645021A true US3645021A (en) 1972-02-29

Family

ID=26654725

Family Applications (1)

Application Number Title Priority Date Filing Date
US763850A Expired - Lifetime US3645021A (en) 1967-09-28 1968-09-30 Arrangement in loader buckets and the like provided with digging blades

Country Status (9)

Country Link
US (1) US3645021A (de)
BE (1) BE721577A (de)
CH (1) CH501784A (de)
DE (1) DE1784870B1 (de)
DK (1) DK118598B (de)
FR (1) FR1585990A (de)
GB (1) GB1211462A (de)
NL (1) NL6813888A (de)
NO (1) NO120729B (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770322A (en) * 1971-04-12 1973-11-06 Caterpillar Tractor Co Apparatus for fracture of material in situ with stored inertial energy
US3896568A (en) * 1974-02-08 1975-07-29 Clark Equipment Co Scaper blade having adjustable section
US3897975A (en) * 1971-04-12 1975-08-05 Caterpillar Tractor Co Method for fracture of material in situ with stored inertial energy
EP0039373A2 (de) * 1980-05-02 1981-11-11 Resonant Technology Company Kompakter Resonanzantrieb für Vorrichtungen zur Bodenbewegung
US4379595A (en) * 1981-02-17 1983-04-12 Caterpillar Tractor Co. Ripper with offset impacting means and slotted shank
US4454666A (en) * 1980-03-31 1984-06-19 Resonant Technology Company Resonance aided front end loader
US4467539A (en) * 1981-10-20 1984-08-28 Resonant Technology Company Resonance aided front end loader
WO1985002427A1 (en) * 1983-11-29 1985-06-06 Drazil, Jaromir, Vaclav A material working machine
US4703838A (en) * 1980-05-27 1987-11-03 Caterpillar Tractor Co. Recoil damper for a reciprocating member
US4726430A (en) * 1983-11-24 1988-02-23 Skil Corporation Device for driving a drilling and/or impacting tool
US4821808A (en) * 1988-02-04 1989-04-18 Resonant Technology Company Resonantly driven earth moving blade
US5269382A (en) * 1992-05-08 1993-12-14 Esco Corporation Impact device
WO1996032545A1 (en) * 1995-04-13 1996-10-17 Takope Oy Vibration bucket arrangement
US6460276B1 (en) * 1996-09-18 2002-10-08 3786111 Canada Inc. Excavation bucket incorporating an impact actuator assembly
US6574891B1 (en) * 1998-03-10 2003-06-10 3786111 Canada Inc. Excavation bucket incorporating an impact actuator assembly
US20050268500A1 (en) * 2002-09-02 2005-12-08 Kazuya Imamura Vibration damping device and bucket for construction machine
US20080313934A1 (en) * 2007-06-19 2008-12-25 Doug Smoljo Earthworking implement
US11492776B1 (en) * 2020-03-17 2022-11-08 Ralph Antonelli Excavator bucket with retractable teeth

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109269745B (zh) * 2018-10-30 2021-01-19 湖南科技大学 基于托辊激振法的大型斗轮机悬臂低频振动测试方法
CN112726699A (zh) * 2020-12-24 2021-04-30 山东水利职业学院 一种沟渠挖掘用设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1067375A (en) * 1908-08-18 1913-07-15 Olin S Proctor Rock-breaking shovel.
US1945322A (en) * 1932-12-29 1934-01-30 Jr Alphonse Joseph Lafayette Coal pinning and breaking machine
US2228445A (en) * 1938-10-12 1941-01-14 Velbiss Charles Dudley De Excavating bucket
US3269039A (en) * 1963-11-27 1966-08-30 Albert G Bodiue Sonic earth moving machine
US3293778A (en) * 1964-03-05 1966-12-27 William H Mcauliff Maul impacting device for excavating buckets
US3478450A (en) * 1967-10-18 1969-11-18 Ernest R Cunningham Earth moving apparatus with vibrating cutting edge

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305953A (en) * 1963-08-15 1967-02-28 Mehren Oswald Von Pneumatic tooth for earth excavator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1067375A (en) * 1908-08-18 1913-07-15 Olin S Proctor Rock-breaking shovel.
US1945322A (en) * 1932-12-29 1934-01-30 Jr Alphonse Joseph Lafayette Coal pinning and breaking machine
US2228445A (en) * 1938-10-12 1941-01-14 Velbiss Charles Dudley De Excavating bucket
US3269039A (en) * 1963-11-27 1966-08-30 Albert G Bodiue Sonic earth moving machine
US3293778A (en) * 1964-03-05 1966-12-27 William H Mcauliff Maul impacting device for excavating buckets
US3478450A (en) * 1967-10-18 1969-11-18 Ernest R Cunningham Earth moving apparatus with vibrating cutting edge

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897975A (en) * 1971-04-12 1975-08-05 Caterpillar Tractor Co Method for fracture of material in situ with stored inertial energy
US3770322A (en) * 1971-04-12 1973-11-06 Caterpillar Tractor Co Apparatus for fracture of material in situ with stored inertial energy
US3896568A (en) * 1974-02-08 1975-07-29 Clark Equipment Co Scaper blade having adjustable section
US4454666A (en) * 1980-03-31 1984-06-19 Resonant Technology Company Resonance aided front end loader
EP0039373A2 (de) * 1980-05-02 1981-11-11 Resonant Technology Company Kompakter Resonanzantrieb für Vorrichtungen zur Bodenbewegung
EP0039373A3 (en) * 1980-05-02 1982-12-01 Resonant Technology Company Compact resonance drive for earth-working equipment
US4703838A (en) * 1980-05-27 1987-11-03 Caterpillar Tractor Co. Recoil damper for a reciprocating member
US4379595A (en) * 1981-02-17 1983-04-12 Caterpillar Tractor Co. Ripper with offset impacting means and slotted shank
US4467539A (en) * 1981-10-20 1984-08-28 Resonant Technology Company Resonance aided front end loader
US4726430A (en) * 1983-11-24 1988-02-23 Skil Corporation Device for driving a drilling and/or impacting tool
USRE33733E (en) * 1983-11-24 1991-11-05 Device for driving a drilling and/or impacting tool
WO1985002427A1 (en) * 1983-11-29 1985-06-06 Drazil, Jaromir, Vaclav A material working machine
US4679337A (en) * 1983-11-29 1987-07-14 Jaromir Vaclav Drazil Material working machine with vibrating tool carrier
US4821808A (en) * 1988-02-04 1989-04-18 Resonant Technology Company Resonantly driven earth moving blade
US5269382A (en) * 1992-05-08 1993-12-14 Esco Corporation Impact device
WO1996032545A1 (en) * 1995-04-13 1996-10-17 Takope Oy Vibration bucket arrangement
US5946832A (en) * 1995-04-13 1999-09-07 Takope Oy Vibration bucket arrangement
US6460276B1 (en) * 1996-09-18 2002-10-08 3786111 Canada Inc. Excavation bucket incorporating an impact actuator assembly
US6574891B1 (en) * 1998-03-10 2003-06-10 3786111 Canada Inc. Excavation bucket incorporating an impact actuator assembly
US20100218403A1 (en) * 2002-09-02 2010-09-02 Kazuya Imamura Vibration damping device and bucket for construction machine
US20080222928A1 (en) * 2002-09-02 2008-09-18 Kazuya Imamura Vibration damping device and bucket for construction machine
US7681689B2 (en) * 2002-09-02 2010-03-23 Komatsu Ltd. Vibration damping device and bucket for construction machine
US7743881B2 (en) 2002-09-02 2010-06-29 Komatsu Ltd. Vibration damping device and bucket for construction machine
US20050268500A1 (en) * 2002-09-02 2005-12-08 Kazuya Imamura Vibration damping device and bucket for construction machine
US8438759B2 (en) 2002-09-02 2013-05-14 Komatsu, Ltd. Vibration damping device and bucket for construction machine
US20080313934A1 (en) * 2007-06-19 2008-12-25 Doug Smoljo Earthworking implement
US7891121B2 (en) * 2007-06-19 2011-02-22 Doug Smoljo Earthworking implement
US11492776B1 (en) * 2020-03-17 2022-11-08 Ralph Antonelli Excavator bucket with retractable teeth

Also Published As

Publication number Publication date
DE1784870B1 (de) 1971-12-30
DK118598B (da) 1970-09-07
NO120729B (de) 1970-11-23
FR1585990A (de) 1970-02-06
BE721577A (de) 1969-03-27
NL6813888A (de) 1969-04-01
CH501784A (de) 1971-01-15
GB1211462A (en) 1970-11-04

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