EP0306468A1 - Pelle motorisée portative - Google Patents

Pelle motorisée portative Download PDF

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Publication number
EP0306468A1
EP0306468A1 EP88870137A EP88870137A EP0306468A1 EP 0306468 A1 EP0306468 A1 EP 0306468A1 EP 88870137 A EP88870137 A EP 88870137A EP 88870137 A EP88870137 A EP 88870137A EP 0306468 A1 EP0306468 A1 EP 0306468A1
Authority
EP
European Patent Office
Prior art keywords
handle
pole
shovel
frame
articulated
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Withdrawn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
EP88870137A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jules Durieux
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0306468A1 publication Critical patent/EP0306468A1/fr
Withdrawn legal-status Critical Current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
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/425—Drive systems for dipper-arms, backhoes or the like
    • 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
    • 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
    • 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
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/427—Drives for dippers, buckets, dipper-arms or bucket-arms with mechanical drives
    • 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
    • E02F9/02—Travelling-gear, e.g. associated with slewing gears
    • E02F9/024—Travelling-gear, e.g. associated with slewing gears with laterally or vertically adjustable wheels or tracks
    • 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
    • E02F9/20—Drives; Control devices
    • E02F9/2004—Control mechanisms, e.g. control levers

Definitions

  • the present invention relates to a portable motorized shovel of small size suitable for earthworks.
  • Document EP-AO 189 008 discloses a small mechanical shovel pivotally mounted on a rolling chassis and controlled by an articulated arm actuated by hydraulic means, said rolling chassis being equipped with wheels and guided by two handlebars and has a tilting platform for the operator.
  • Document FR-A-2 503 764 discloses a vehicle with hydraulic actuation, in particular a small excavator or loader shovel, comprising a driving lever and at least one crutch consisting of a sole articulated to a support arm, the driving lever being equipped with a Bowden control intended to actuate a hydraulic control console.
  • a mechanical shovel or a mechanism for controlling such a shovel does not describe a mechanical shovel or a mechanism for controlling such a shovel.
  • the present invention aims to provide a portable motorized shovel with a small footprint and reduced weight.
  • the portable motorized shovel comprises a frame equipped with an articulated arm, supporting a motor and provided with handlebars, and is characterized in that said articulated arm consists of a pole secured to said frame and in a shovel handle articulated on the free end of said pole, one end of said handle being equipped with a tiltable pallet and the other end of the handle extending beyond the articulation on the pole being articulated on a nut displaceable on a screw endless powered by said motor.
  • said motor is mounted on a cradle tiltably mounted in said frame along an axis substantially perpendicular to the longitudinal axis of the pole.
  • the motor is an electric motor which can rotate in both directions.
  • the engine consists of an internal combustion engine arranged on said cradle via a support pivotally mounted on an axis essentially perpendicular to the pivot axis of the cradle, the drive shaft being arranged essentially parallel to the axis of the screw and being connected, via a centrifugal clutch to a small pulley and a roller in correspondence with a large pulley provided with a rolling surface, arranged in said cradle and linked to said screw in order to driving it in rotation, Bowden type commands controlling the tilting of said support in order either to tension a belt between the large pulley and the small pulley, or to bring said roller into contact with the running surface of the pulley.
  • said frame is articulated on a platform anchored in the ground and intended for the operator.
  • the pallet housed at the free end of the handle can of course be controlled in a manner known per se in a tilting movement intended for its unloading.
  • said pallet is integral with a lever pivotally mounted on the corresponding end of said handle, the opposite end of which is connected to a first rod, itself linked to a second rod via a pivotable lever on said handle, said second rod being essentially parallel to said pole and actuated in a back-and-forth movement by a lever-shaped pedal articulated on said frame.
  • a return spring is advantageously provided in order to return the pedal to its starting position after each actuation.
  • the device according to the present invention is particularly simple and uses a reduced number of mechanical elements.
  • the arrangement of the motorized shovel according to the invention is essentially different from that of a prior art mechanical shovel.
  • the frame is freely articulated on the platform and that the shovel is, in part, actuated by force of a man, whereas, according to the state of the art, the driving force of the shovel or loading it results only from the installed motive power.
  • the judicious arrangement of the various mechanical elements in accordance with the invention makes it possible to obtain a simple, light and therefore portable mechanical shovel, advantageously combining the force of the operator, amplified adequately by levers, with a relatively low motive force.
  • the motorized shovel 1 comprises a frame 3 equipped with a pole 5 made integral with it by welding, for example.
  • Said frame 3 is also provided with two handlebars 7 and 7 ′ integral with it but in adjustable angular positions by means of a pivot axis 9 and a latch 11 blocking the handlebars in various angular positions.
  • the articulated arm of the portable motorized shovel according to the invention consists of the pole 5 and a shovel handle 13 which is articulated on the free end of the pole 5 via a pivot 15.
  • One end of said handle 13 carries the pallet 17, preferably tiltable, and the other end situated beyond the pivot point 15 on the pole 5 is connected by a pivot 19 to a nut 21 which can move on a worm screw 23 driven by a motor 25 housed on frame 3.
  • the motor 25 is fixed to a cradle 27 pivotally mounted in the frame 3 via a pivot axis 29.
  • the rotation of the motor 25 and, therefore, the rotation in one direction or the other of the screw implies the corresponding displacement of the nut 21 and, therefore, the pivoting of the handle 13 relative to the pole 5 .
  • the movement transmission member consists of a ball screw and a ball nut.
  • the link between the drive shaft and said ball screw 23 takes place via a connecting sleeve 31 secured to said shaft and guided by one or more ball bearings 33 trapped in said oscillating cradle 27.
  • the rotation of the ball screw 23 is controlled from the handlebars 7, via one or more control levers 35 located near the handles 37.
  • the motor 25 is an electric motor which can rotate in both directions.
  • the control lever 35 consists of a lever with three positions: front, rear, stop.
  • the engine 25 consists of an internal combustion engine 25 (fig. 4) arranged on said cradle 27 via a support 41 pivotally mounted along an axis 43 essentially perpendicular to the pivot axis 29 of the cradle 27 , the drive shaft 43 being arranged essentially parallel to the axis of the screw 23 and being connected, via a centrifugal clutch 45 to a small pulley 47 and a roller 49 in correspondence with a large pulley 51 provided with a rolling surface 53, arranged at said cradle 27 and linked to said screw 23 for the purpose of driving the latter in rotation, controls of the Bowden type 55, 57 starting from the handlebars 7, 7 ′ being connected to said support 41 via springs 59, 61 and controlling the tilting of said support 41 in order either to tension a belt 63 between the large pulley 51 and the small pulley 47, or to bring said roller 49 into contact with the rolling surface 53 of the pulley 51.
  • an internal combustion engine 25 (fig. 4) arranged on said
  • the frame 3 is advantageously articulated on a platform 67 provided with anchoring points 69 in the ground.
  • handlebars 7, 7 ′ integral with said frame 3. It is intended to be able to fold the handlebars against the cover 65 and to provide them with a handle 71 arranged at a suitable point, which allows easy transport of the motorized shovel like a suitcase.
  • the pallet 17 is fixed to the handle 13 by a lever 75 so as to allow it to be well located to penetrate the ground in good conditions or to avoid unloading during the ascent.
  • the lever 75 pivots around the pivot axis 77 and is controlled by a first rod 79 linked to the latter by a pivot axis 81.
  • a lock 83 may be provided for blocking the pallet in a position fixed relative to on the handle, for example in the case of backfilling.
  • a stop 85 is provided to limit the tilting movement of the pallet.
  • Said first rod 79 is connected to a second rod 87 via a lever 89 pivoting on the handle at a pivot point 15.
  • This second rod is actuated by a lever-shaped pedal 91.
  • a spring 93 causes the lever 75 to tilt (fig. 3) which, via the rod 79, raises the pallet 17.
  • an action on the pedal 91 causes the pallet 17 to tilt to empty it and also return it to the working position for the next operation.
  • the ball screw 23 is provided at its upper end with a stop 95 rigidly fixed.
  • the nut 21 of the ball screw 23 is provided with a flexible washer 97 in order to absorb the repeated impact of the stop 95 against the nut 21.
  • Two metal washers 99 and 101 protect this shock absorber 97.
  • a needle stop 103 makes it easier to reverse the direction of travel despite a significant approximation force between the nut and its stops. This device is repeated at the other end of the ball screw 23.
  • the damping washer 97 is then inserted into the hub of the large pulley 51 or into the sheath 31.
  • the power shovel according to the invention is simple and makes it possible to lighten or even eliminate the significant and painful effort provided by an operator when handling a shovel or a pickaxe.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)
  • Operation Control Of Excavators (AREA)
  • Handcart (AREA)
EP88870137A 1987-09-03 1988-08-22 Pelle motorisée portative Withdrawn EP0306468A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE8700991 1987-09-03
BE8700991A BE1000891A4 (fr) 1987-09-03 1987-09-03 Pelle motorisee portative.

Publications (1)

Publication Number Publication Date
EP0306468A1 true EP0306468A1 (fr) 1989-03-08

Family

ID=3882843

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88870137A Withdrawn EP0306468A1 (fr) 1987-09-03 1988-08-22 Pelle motorisée portative

Country Status (4)

Country Link
US (1) US4843743A (ja)
EP (1) EP0306468A1 (ja)
JP (1) JPH0194124A (ja)
BE (1) BE1000891A4 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5127172A (en) * 1991-08-28 1992-07-07 Kenneth Lund Guard rail cleanout device
US7096970B1 (en) 2000-02-02 2006-08-29 Porter Roger D Compact bed edging machine
US7819345B2 (en) * 2007-09-17 2010-10-26 Shoap Stephen D Method and system for fluid transmission along significant distances
US7942350B2 (en) * 2008-09-16 2011-05-17 Shoap Stephen D Method and system for fluid transmission along significant distances
CN104153405A (zh) * 2013-12-13 2014-11-19 中北大学 一种混合驱动可控并联挖掘机构
CN106482976B (zh) * 2016-12-08 2023-03-14 合肥工业大学 一种多功能便捷取土装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2503764A1 (fr) * 1981-04-13 1982-10-15 Kiefer Gmbh Vehicule a actionnement hydraulique, en particulier petite pelle excavatrice
EP0189008A1 (en) * 1984-12-12 1986-07-30 Beltrami, Osmano Trolley-mounted, hand propelled backhoe

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US887874A (en) * 1908-03-12 1908-05-19 Hugh T Toy Street-scraper.
US1474314A (en) * 1922-11-27 1923-11-13 Burke Paul Excavator
US1822338A (en) * 1929-09-03 1931-09-08 Clinton A Clemens Excavator
US2416826A (en) * 1945-12-03 1947-03-04 William J Gallaher Excavator apparatus
US2590143A (en) * 1949-12-16 1952-03-25 Fmc Corp Snowplow construction
GB776848A (en) * 1955-05-24 1957-06-12 Cumbrian Implement Company Ltd An improved device for digging or cleaning ditches
AU6433365A (en) * 1965-09-21 1967-03-23 Richard Smalley (Engineering) Limited An eccavating and/or loading device
AT275424B (de) * 1968-06-10 1969-10-27 Menzi Ag Ernst Unterstützungskonstruktion für einen Bagger
FR2324810A1 (fr) * 1975-09-17 1977-04-15 Scip Pelle motorisee a entrainement pneumatique
US4302894A (en) * 1978-02-08 1981-12-01 Emma Sam F Manual shovelling and dumping devices

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2503764A1 (fr) * 1981-04-13 1982-10-15 Kiefer Gmbh Vehicule a actionnement hydraulique, en particulier petite pelle excavatrice
EP0189008A1 (en) * 1984-12-12 1986-07-30 Beltrami, Osmano Trolley-mounted, hand propelled backhoe

Also Published As

Publication number Publication date
US4843743A (en) 1989-07-04
BE1000891A4 (fr) 1989-05-09
JPH0194124A (ja) 1989-04-12

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