US3567049A - Mechanical excavator or loader vehicle - Google Patents

Mechanical excavator or loader vehicle Download PDF

Info

Publication number
US3567049A
US3567049A US813090A US3567049DA US3567049A US 3567049 A US3567049 A US 3567049A US 813090 A US813090 A US 813090A US 3567049D A US3567049D A US 3567049DA US 3567049 A US3567049 A US 3567049A
Authority
US
United States
Prior art keywords
turret
jib
mechanical
chassis
machine
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
US813090A
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.)
POCTAIN SA
Sa Poctain
Original Assignee
POCTAIN 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 POCTAIN SA filed Critical POCTAIN SA
Application granted granted Critical
Publication of US3567049A publication Critical patent/US3567049A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • 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
    • E02F3/30—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/302—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom with an additional link
    • 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
    • E02F3/30—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/32—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/18—Counterweights

Definitions

  • This invention relates to a mechanical earthworking machine, such as a mechanical excavator or mechanical loader, of the kind having a rotary turret provided with a jib carrying an earthworking implement, such as a scoop or bucket, and provided with a counterbalancing weight.
  • the counterweight and turret can be used for counterbalancing loads on the jib when raising a loaded bucket or scoop, or for increasing forces on the bucket or scoop when used for excavating purposes or for balancing or trimming the machine as a whole during transportation.
  • the object of the invention is to provide such an arrangement and in accordance with the invention the mechanical earthworking machine comprises a chassis, a turret rotatably mounted on said chassis, a jib articulated to said turret and carrying an earthworking implement such as a bucket or scoop, and a counterweight mounted on said turret, wherein said turret is supported on said chassis by parallel linkage means whereby said turret and the parts carried thereby can be displaced bodily in a direction substantially longitudinally of the jib.
  • FIG. 1 is a diagrammatic side elevation of an earthworking machine or excavator according to the invention
  • FIG. 2 is a perspective view showing one form of parallel linkage for connecting the rotary turret with a platform or like member carried by or forming part of a rotary turntable (not shown) on the machine chassis;
  • FIG. 3 is a view similar to FIG. 1 showing the jib and bucket or scoop in different positions in full and broken lines respectively;
  • FIG. 4 is a view similar to that of FIG. 2 showing a modified form of the parallel linkage mechanism.
  • the machine comprises a wheeled chassis l, a turret support or platform 2 mounted on or forming part of a turntable 12 for rotating a turret 4 about a vertical axis x-x, and parallel linkage means 5, 6 by which the turret is supported on the turret support or platform 2.
  • the counterweight 4a is fixed on the turret 4.
  • a jib 8 Articulated to the turret 4 in any known manner is a jib 8 and pivotally connected to the outer free end of said jib is an arm 9 which at its free end is pivoted an earthworking implement which in the embodiment shown is a scoop or bucket 10. Pivotal movement of the jib 8, arm 9 and scoop or bucket 10 is effected in known manner by suitable rams.
  • the parallel linkage means comprises a pair of parallel arms 5 and 6 each of which is pivotally connected at one of its ends to the turret at 5b and 6b respectively and its other end is pivotally connected at 5a and 6a respectively to the turret sup port or platform 2.
  • the arm 5 of the parallel linkage means one end of a ram 7 is pivoted at 7a whilst the opposite end of said ram is pivotally connected to the turret 4 at 7b.
  • the arm 5 as shown in FIG. 2 is in the form of a relatively wide platelike member to ensure correct guiding and to reduce as far as possible the effects of torsion forces.
  • the other arm 6 is in the form of a rod.
  • the operating ram 7 instead of being connected between the arm 5 of the parallel linkage means and the turret 4 (as in FIG. 3) is connected between the arm 5 and the turret support or platform 2 but in this embodiment ram 7 is pivoted to arm 5 at 7a near the upper end thereof instead of near the lower end as in the embodiment according to FIG. 3.
  • the center of gravity of the machine Assuming the machine is being used, for example, for loading work when a load is to be lifted by the scoop or bucket 10 and the jib is to be advanced as far forward as possible in a substantially horizontal position, to reach the load to be lifted, it is necessary for the center of gravity of the machine to be positioned as far back as possible, that is as far rearwardly as possible relative to the load to be lifted by the scoop or bucket 10, not only to counterbalance the load but to prevent the load causing the machine to tip forwardly when the scoop or bucket 10 is raised by the jib.
  • the ram 7 preferably an hydraulic ram, is operated to cause the parallel linkage means to displace the turret 4 and the counterweight carried thereby, and consequently also the jib 8, arm 9 and scoop or bucket 10, in a direction parallel to the jib into the full line position shown at A in FIG. 3 so that the center of gravity of the machine is shifted rearwardly.
  • the ram 7 is operated to move the turret, counterweight, jib and scoop or bucket bodily into the broken line position shown at B in FIG. 3 whereby maximum weight is applied to the jib to cause suitable excavating penetration of the bucket or scoop 10 into the ground.
  • the ram 7 can be operated to shift the turret 4, and all the parts carried thereby, to a position intermediate positions A and B shown in FIG. 3 so as to distribute the load more evenly between the axles of the wheels of the chassis 1.
  • a mechanical earthworking machine such as a mechanical excavator or loader, comprising a chassis, a turret rotatably mounted on said chassis, a jib articulated to said turret and carrying an earthworking implement such as a bucket or scoop, and a counterweight mounted on said turret, wherein said turret is supported on said chassis by parallel linkage means whereby said turret and the parts carried thereby can be displaced bodily in a direction substantially longitudinally of the jib.
  • said parallel linkage means comprises a pair of parallel arms each pivotally connected at one of its ends to the turret and each connected at its other end! to a turret support rotatably mounted on the machine chassis, and wherein a ram is connected between one of said arms and said turret support.
  • a mechanical earthworking vehicle according to clainii, wherein one of said arms of the parallel linkage means is in the form of a relatively wide platelike member and said ram is connected with said platelike member.

Abstract

In a mechanical excavator or loader vehicle having a rotary turret carrying a counterweight, jib, and scoop or bucket the invention consists in supporting said turret on the vehicle chassis by parallel linkage means whereby said turret and the parts carried thereby can be moved bodily in a direction longitudinally of the jib to vary the position of the center gravity of the vehicle.

Description

United States Patent [72] Inventor Gabriel L. Guinot Le Plessis-Belleville, France [21] Appl. No. 813,090
[22] Filed Apr. 3, 1969 [45] Patented Mar. 2, 1971 [73] Assignee Societe Anonyme Poclain Oise, France [32] Priority Apr. 8, 1969 [3 3] 4 France [54] MECHANICAL EXCAVATOR OR LOADER VEHICLE 3 Claims, 4 Drawing Figs.
[52] U.S.Cl 214/138, 214/142 [51] 1nt.C| E02f3/74 [50] Field of Search 214/142, 138, 127; 212/48,4 9; 280/150 (D), 150 (E) [56] References Cited UNITED STATES PATENTS 2,408,500 10/1946 West 212/49 3,435,961 4/1969 Hamson 212/49 Primary Examiner-Gerald M. Forlenza Assistant Examiner-Frank E. Werner Attorney-Mason, Fenwick & Lawrence ABSTRACT: In a mechanical excavator or loader vehicle having a rotary turret carrying a counterweight, jib, and scoop or bucket the invention consists in supporting said turret on the vehicle chassis by parallel linkage means whereby said turret and the parts carried thereby can be moved bodily in a direction longitudinally of the jib to vary the position of the center gravity of the vehicle.
sum 2 [IF 2 Inventor GABmEL L,Gumo1' MECHANICAL EXCAVATOR OR LOADER VEHICLE This invention relates to a mechanical earthworking machine, such as a mechanical excavator or mechanical loader, of the kind having a rotary turret provided with a jib carrying an earthworking implement, such as a scoop or bucket, and provided with a counterbalancing weight.
It is well known that with such machines it is necessary, for satisfactory operation of the machine, to provide the turret with such counterbalancing weight remote from the bucket or scoop to counterbalance the weight of the jib and the scoop or bucket when the jib is in a substantially horizontal position and the scoop or bucket is filled with earth or other material. Under other conditions, for example when the machine is being used for excavation work in which the scoop or bucket is being drawn rearwardly it is necessary that the counterweight be repositioned nearer to the jib to assist the bucket or scoop to penetrate the material to be excavated. Furthermore when the machine is not in use but being transported from one site to another it is desirable to reposition the counterweight at or nearer the center of the machine, to ensure more even balance of the jib and turret assembly between the axles of the machine.
Having regard to the circumstances above described it is desirable to provide an arrangement whereby the counterweight and turret can be used for counterbalancing loads on the jib when raising a loaded bucket or scoop, or for increasing forces on the bucket or scoop when used for excavating purposes or for balancing or trimming the machine as a whole during transportation.
The object of the invention is to provide such an arrangement and in accordance with the invention the mechanical earthworking machine comprises a chassis, a turret rotatably mounted on said chassis, a jib articulated to said turret and carrying an earthworking implement such as a bucket or scoop, and a counterweight mounted on said turret, wherein said turret is supported on said chassis by parallel linkage means whereby said turret and the parts carried thereby can be displaced bodily in a direction substantially longitudinally of the jib.
In order that the invention may be more clearly understood two particular embodiments of the invention will now be described, by way of example, with reference to the accompanying drawings in which:
FIG. 1 is a diagrammatic side elevation of an earthworking machine or excavator according to the invention;
FIG. 2 is a perspective view showing one form of parallel linkage for connecting the rotary turret with a platform or like member carried by or forming part of a rotary turntable (not shown) on the machine chassis;
FIG. 3 is a view similar to FIG. 1 showing the jib and bucket or scoop in different positions in full and broken lines respectively; and
FIG. 4 is a view similar to that of FIG. 2 showing a modified form of the parallel linkage mechanism.
Referring now to FIGS. 1 and 2 the machine according to the invention comprises a wheeled chassis l, a turret support or platform 2 mounted on or forming part of a turntable 12 for rotating a turret 4 about a vertical axis x-x, and parallel linkage means 5, 6 by which the turret is supported on the turret support or platform 2. The counterweight 4a is fixed on the turret 4.
Articulated to the turret 4 in any known manner is a jib 8 and pivotally connected to the outer free end of said jib is an arm 9 which at its free end is pivoted an earthworking implement which in the embodiment shown is a scoop or bucket 10. Pivotal movement of the jib 8, arm 9 and scoop or bucket 10 is effected in known manner by suitable rams.
The parallel linkage means comprises a pair of parallel arms 5 and 6 each of which is pivotally connected at one of its ends to the turret at 5b and 6b respectively and its other end is pivotally connected at 5a and 6a respectively to the turret sup port or platform 2. 0n the arm 5 of the parallel linkage means one end of a ram 7 is pivoted at 7a whilst the opposite end of said ram is pivotally connected to the turret 4 at 7b. The arm 5 as shown in FIG. 2, is in the form of a relatively wide platelike member to ensure correct guiding and to reduce as far as possible the effects of torsion forces. The other arm 6 is in the form of a rod.
In a modification of the invention as illustrated in FIG. 4 the operating ram 7 instead of being connected between the arm 5 of the parallel linkage means and the turret 4 (as in FIG. 3) is connected between the arm 5 and the turret support or platform 2 but in this embodiment ram 7 is pivoted to arm 5 at 7a near the upper end thereof instead of near the lower end as in the embodiment according to FIG. 3.
The parallel linkage means for effecting counterbalancing under various conditions and for various reasons operate as follows:
Assuming the machine is being used, for example, for loading work when a load is to be lifted by the scoop or bucket 10 and the jib is to be advanced as far forward as possible in a substantially horizontal position, to reach the load to be lifted, it is necessary for the center of gravity of the machine to be positioned as far back as possible, that is as far rearwardly as possible relative to the load to be lifted by the scoop or bucket 10, not only to counterbalance the load but to prevent the load causing the machine to tip forwardly when the scoop or bucket 10 is raised by the jib. In such circumstances the ram 7, preferably an hydraulic ram, is operated to cause the parallel linkage means to displace the turret 4 and the counterweight carried thereby, and consequently also the jib 8, arm 9 and scoop or bucket 10, in a direction parallel to the jib into the full line position shown at A in FIG. 3 so that the center of gravity of the machine is shifted rearwardly.
Assuming now that the machine is to be used for excavating work the ram 7 is operated to move the turret, counterweight, jib and scoop or bucket bodily into the broken line position shown at B in FIG. 3 whereby maximum weight is applied to the jib to cause suitable excavating penetration of the bucket or scoop 10 into the ground.
In circumstances in which the machine is not being used but merely transported from one site to another the ram 7 can be operated to shift the turret 4, and all the parts carried thereby, to a position intermediate positions A and B shown in FIG. 3 so as to distribute the load more evenly between the axles of the wheels of the chassis 1.
From the above description it will be understood that by virtue of the present invention the center of gravity of the machine can be shifted and the reach of the jib varied in dependence of the conditions under which the machine is used. A further advantage of the invention is that, unlike conventional machines of this type the counterbalancing of the machine is not dependent solely on the position of the counterweight itself but on the suitable positioning of the turret and all the parts carried thereby.
It will be understood that the invention is not limited to the particular embodiments herein described but various modifications can be made without departing from the scope of the invention as defined in the appended claims.
We claim:
1. A mechanical earthworking machine, such as a mechanical excavator or loader, comprising a chassis, a turret rotatably mounted on said chassis, a jib articulated to said turret and carrying an earthworking implement such as a bucket or scoop, and a counterweight mounted on said turret, wherein said turret is supported on said chassis by parallel linkage means whereby said turret and the parts carried thereby can be displaced bodily in a direction substantially longitudinally of the jib.
2. A mechanical earthworking vehicle according to claim 1, wherein said parallel linkage means comprises a pair of parallel arms each pivotally connected at one of its ends to the turret and each connected at its other end! to a turret support rotatably mounted on the machine chassis, and wherein a ram is connected between one of said arms and said turret support.
3. A mechanical earthworking vehicle according to clainii, wherein one of said arms of the parallel linkage means is in the form of a relatively wide platelike member and said ram is connected with said platelike member.

Claims (3)

1. A mechanical earthworking machine, such as a mechanical excavator or loader, comprising a chassis, a turret rotatably mounted on said chassis, a jib articulated to said turret and carrying an earthworking implement such as a bucket or scoop, and a counterweight mounted on said turret, wherein said turret is supported on said chassis by parallel linkage means whereby said turret and the parts carried thereby can be displaced bodily in a direction substantially longitudinally of the jib.
2. A mechanical earthworking vehicle according to claim 1, wherein said parallel linkage means comprises a pair of parallel arms each pivotally connected at one of its ends to the turret and each connected at its other end to a turret support rotatably mounted on the machine chassis, and wherein a ram is connected between one of said arms and said turret support.
3. A mechanical earthworking vehicle according to claim 2, wherein one of said arms of the parallel linkage means is in the form of a relatively wide platelike member and said ram is connected with said platelike member.
US813090A 1968-04-08 1969-04-03 Mechanical excavator or loader vehicle Expired - Lifetime US3567049A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR147346 1968-04-08

Publications (1)

Publication Number Publication Date
US3567049A true US3567049A (en) 1971-03-02

Family

ID=8648693

Family Applications (1)

Application Number Title Priority Date Filing Date
US813090A Expired - Lifetime US3567049A (en) 1968-04-08 1969-04-03 Mechanical excavator or loader vehicle

Country Status (4)

Country Link
US (1) US3567049A (en)
BE (1) BE770529Q (en)
FR (1) FR1580903A (en)
GB (1) GB1222797A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851776A (en) * 1972-04-18 1974-12-03 Poclain Le Plessis Belleville Vehicle with counter weight turrent lock
US3933262A (en) * 1972-07-03 1976-01-20 Poclain Method of handling a pivoting cab of a public works machine and a public works machine applying said method
WO1980001268A1 (en) * 1978-12-12 1980-06-26 Caterpillar Tractor Co Apparatus for shifting center of gravity of a work vehicle
US4230199A (en) * 1978-12-12 1980-10-28 Caterpillar Tractor Co. Apparatus for shifting center of gravity of a work vehicle
US20040188166A1 (en) * 2003-03-24 2004-09-30 Komatsu Ltd. Counterweight for hydraulic shovel
US20070068051A1 (en) * 2005-09-26 2007-03-29 Matt Mills Machine with adapter frame for weight stabilization, and related method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8430389D0 (en) * 1984-12-01 1985-01-09 Bamford Excavators Ltd Earth moving machine
DE3911571A1 (en) * 1989-04-08 1990-10-11 Orenstein & Koppel Ag TOP DRIVE OF A EXCAVATOR WITH A CENTRAL FRAME

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2408500A (en) * 1944-09-13 1946-10-01 Maxwell A West Automatic counterbalance for boom derricks
US3435961A (en) * 1967-01-23 1969-04-01 Frank C Hamson Vehicular boom hoist

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2408500A (en) * 1944-09-13 1946-10-01 Maxwell A West Automatic counterbalance for boom derricks
US3435961A (en) * 1967-01-23 1969-04-01 Frank C Hamson Vehicular boom hoist

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851776A (en) * 1972-04-18 1974-12-03 Poclain Le Plessis Belleville Vehicle with counter weight turrent lock
US3933262A (en) * 1972-07-03 1976-01-20 Poclain Method of handling a pivoting cab of a public works machine and a public works machine applying said method
WO1980001268A1 (en) * 1978-12-12 1980-06-26 Caterpillar Tractor Co Apparatus for shifting center of gravity of a work vehicle
US4230199A (en) * 1978-12-12 1980-10-28 Caterpillar Tractor Co. Apparatus for shifting center of gravity of a work vehicle
US20040188166A1 (en) * 2003-03-24 2004-09-30 Komatsu Ltd. Counterweight for hydraulic shovel
US7188865B2 (en) * 2003-03-24 2007-03-13 Komatsu Ltd. Counterweight for hydraulic shovel
US20070068051A1 (en) * 2005-09-26 2007-03-29 Matt Mills Machine with adapter frame for weight stabilization, and related method
US7523571B2 (en) * 2005-09-26 2009-04-28 Vermeer Manufacturing Company Machine with adapter frame for weight stabilization
US20090183399A1 (en) * 2005-09-26 2009-07-23 Vermeer Manufacturing Company Machine with adapter frame for weight stabilization and related method

Also Published As

Publication number Publication date
GB1222797A (en) 1971-02-17
DE1917434A1 (en) 1969-11-13
FR1580903A (en) 1969-09-12
DE1917434B2 (en) 1977-06-16
BE770529Q (en) 1971-12-01

Similar Documents

Publication Publication Date Title
US3952890A (en) Hydraulically operated shovels
US4679336A (en) Earth moving machine
US3862697A (en) Front loading hydraulic excavator
US3411647A (en) Boom assembly for tractor loader
US4103791A (en) Shovel attachment means for hydraulic excavator
US3231116A (en) Excavating machine
US3586195A (en) Digging and lifting device
US3872991A (en) Vehicle loader linkage means
US3501034A (en) Power shovel
US3567049A (en) Mechanical excavator or loader vehicle
US3349932A (en) Side dump loader
US3653131A (en) Excavating apparatus
US4808061A (en) Single arm backhoe
US2439139A (en) Power scoop
US3606048A (en) Vehicle having front,central and rear implements
US3658202A (en) Loader with improved stability and increased reach
US4268214A (en) Excavator front end
US3648863A (en) Dipper pitch control for shovels
US3575307A (en) Earthworking machines
US3786953A (en) Loader linkage
US5533856A (en) Combined loaded self-leveling and implement tilt linkages for effecting true level and enhanced roll back and dump characteristics throughout lift range of loader
US3666124A (en) Lifting and excavating apparatus
US4329796A (en) Multi-use excavating and load handling machine
US3734320A (en) Support means for boom ram
US3094229A (en) Hydraulic back hoe