US3881556A - Public works device comprises a body a telescopic jib - Google Patents

Public works device comprises a body a telescopic jib Download PDF

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Publication number
US3881556A
US3881556A US470620A US47062074A US3881556A US 3881556 A US3881556 A US 3881556A US 470620 A US470620 A US 470620A US 47062074 A US47062074 A US 47062074A US 3881556 A US3881556 A US 3881556A
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United States
Prior art keywords
section
pivot
arm
sections
arms
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Expired - Lifetime
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US470620A
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English (en)
Inventor
Michel M Cresp
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Poclain SA
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Poclain SA
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    • 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
    • E02F3/283—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 single arm pivoted directly on the chassis
    • E02F3/286—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 single arm pivoted directly on the chassis telescopic or slidable
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/087—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods by means of a swinging arm

Definitions

  • a public works device comprises a body, a telescopic jib including at least two sections of which a first section is pivotally mounted on the body and a second section is mounted for sliding relative to the first section, first control means for controlling relative sliding of the two sections and connected between the two sectionsfsecond control means for controlling pivoting of the first section relative to the body and which is connected between the first section and the body, and a linkage pivotally connected to the first and second sections and by which a work tool is freely suspended from the jib, wherein the linkage includes a first arm having three aligned and equally spaced pivot points and which is pivotally coupled directly or indirectly by one extreme pivot point to the second section, a second arm having two aligned pivot points spaced apart by a distance equal to that separating adjacent pivot points of the first arm, the second arm being pivotally coupled by one pivot point directly or indirectly to the first section and pivotally connected by the other pivot point to the intermediate pivot point of the
  • a device comprising:
  • a telescopic jib including at least two sections of which a first section is pivotally mounted on the body and a second section is mounted for sliding relative to the first section;
  • first control means for controlling relative sliding of the two sections and connected between the two sections
  • second control means for controlling pivoting of the first section relative to the body and which is connected between the first section and the body
  • the linkage includes a first arm having three aligned and equally spaced pivot points and which is pivotally coupled by one extreme pivot point to the second section, a second arm having two aligned pivot points spaced apart by a distance equal to that separating adjacent pivot points of the first arm, the second arm being pivotally coupled by one pivot point to the first section and by the other pivot point to the intermediary pivot point of the first arm, and the work tool is suspended from the other extreme pivot point of the first arm.
  • a device comprising:
  • a telescopic jib including at least two sections of which a first section is pivotally mounted on the body and a second section is mounted so as to slide relative to the first section;
  • first control means for controlling relative sliding of the two sections and connected between the two sections
  • second controlling means for controlling pivoting of the first section relative to the body and which is connected between the first section and the body
  • the linkage includes a first and further pairs of arms of which each arm is provided with three aligned and equally spaced pivot points, the two arms being connected together by their intermediary pivot points, the arms of the first pair being connected by one of their extreme pivot points to the first and second sections respectively, the first and further pairs of arms being connected together in succession, each arm of each further pair being connected by one of its extreme pivot points to one of the extreme pivot points of the corresponding arm of the preceding pair, and the last pair of arms remote from the first pair carries a first arm which is parallel and identical to that arm of the first pair which is connected to the second section and of which the extreme free pivot point forms the point of suspension of the work too], and a second arm which is parallel to the other arm of the first pair and is provided with two pivot points, the spacing of which is equal to the spacing of the intermediary pivot point from one of the extreme pivot points of the other arm of the first pair, the second arm being connected to one of the arms of the last pair and to the intermediary pivot point of the first arm.
  • a device comprising:
  • a telescopic jib including at least two sections of which a first section is pivotally mounted on the body and a second section is mounted to slide relative to the first section;
  • first control means for controlling relative sliding of the two sections and connected between the two sections
  • second control means for controlling pivoting of the first section relative to the body and which is connected between the first section and the body
  • first link being connected to the first section by a first pivot
  • second link being connected to the second section by a second pivot and the two links being connected together by a third pivot
  • FIGS. 1 and 2 are views in elevation of a first embodiment of a device according to the invention, in which the working equipment is disposed respectively in a first configuration before the completion of a hole and in a second configuration after completion of the hole;
  • FIG. 3 is a view in elevation of part of a second embodiment of a device according to the invention.
  • the device shown in FIG. 1 comprises a chassis l, fitted with wheels 2 and a turret 3, which is mounted to rotate on chassis 1 about an axis 4.
  • the chassis l is equipped with stabilisation jacks 5 which, in use, rest on the ground 6.
  • a section 8 of a telescopic jib 7a is connected to the turret 3 at pivot 9.
  • This section is, as shown, arranged horizontally parallel to the direction of telescoping.
  • the second section 11a of the jib 7a is completely extended from section 8; a ram 12a connected between the two sections for regulating their relative position is also completely extended.
  • Section 11a is provided with a jib-head 13a, which is equipped in the normal way with a pulley 14a mounted to rotate round pivot 15a.
  • a first link 17a formed by an arm with a length l, is connected to lugs 16 on section 8 by pin 18, and a second link 19a formed by an arm with a length 21, is coupled to the pivot 15a.
  • the second link 19a has two other pivots 20a and 21a, which are equally spaced apart by a distance equal to length 1.
  • first link 17a is connected to the second link 19a at the pivot
  • support 22a of a borer 23a is suspended from the second link 19a by the extreme pivot pin 21a
  • the hydraulic motor 24a for driving the borer is itself suspended from the support 22a by means of a pivot pin 25a orthogonal to the pivot 21a.
  • the end of the borer 23a is positioned on the vertical axis 27 of the hole 26 to be dug.
  • the jib has taken up its fully retracted position 7b, the section 8 remaining horizontal, the other section having been completely retracted to 11b in the interior of section 8, by the action of the ram 12b.
  • the jib-head 13b and the lugs 16 have come together so that the pivots 18 and b are near to each other.
  • the arms 17b and 19b are now lower, still linked at the pivot 20b.
  • the extreme pivot of the arm 19b has arrived at 21b, the borer 23b and its driving motor 24b being suspended there. It should be noted that the hole 26 has now been bored out, and the excavated soil has been deposited at 28 around the orifice.
  • a multiplicity of identical arms 29 forms the linkage.
  • Each arm 29 bears three pivots equally spaced apart by a distance L.
  • These arms are grouped two by two, linked at their intermediate pivot points 30.
  • a pair of arms 29 is coupled to the preceding pair by the connecting of each of its arms to one of the arms of the preceding pair at the extreme pivots 31 of the arms.
  • One of the extreme pivots of the two first arms coincides with the pivots 18 and 15a respectively.
  • an arm 29c identical to arms 29, is linked by one of its extreme pivots to the next to last arm 29 which is parallel to the arm linked at pivot 18, whilst an arm 29d bearing two pivots spaced apart by distance L is linked to the next to last arm which is parallel to the arm 29 linked at pivot 15a and to the arm 29c at its intermediate pivot 30c.
  • the extreme pivot pin 31c of the arm 29c acts as the suspension for the support 22a.
  • the pivots 18, 15a and 21a are at the apices of a right angle triangle, of which the apex at the right angle is formed by the pivot 18.
  • the median l8 20a (18 20b) of the base 15a 21a (15b 21b) has a length equal to 1, that is, half the length of the base which is a geometrical characteristic of a right angle triangle.
  • pivot 21a (21b) is always perpendicular to the straight line 18 15a (18 15b) passing through pivot 18.
  • the straight line 18 15a being permanently horizontal, the pivot 21b is positioned on the vertical line 27 passing through the pivot l8.
  • a clam-shell bucket may be suspended from the arm 19a (19b) at the pivot 21a (21b).
  • the jib have at least two sections and that the arms 17a and 19a should be linked to two distinct sections, one of these (8) being fixed in relation to the turret 3.
  • the jib may, however, have more than two sections, the arm 19a being linked to one or other of the sliding sections.
  • the various arms 29, 29c and 29d are connected in a manner to form a succession of rhombs connected to each other at common apices, and having equal and opposite angles at the apices.
  • the pivot 31c is disposed permanently on a straight line through pivot 18 perpendicular to the straight line passing through the pivots 18 and 15a.
  • the straight line 18 15a being permanently horizontal, the pivot 31c is permanently disposed on the vertical 27, coinciding with the axis of the hole, and displaced along this vertical as a function of the extension of the rhombs. This extension is itself controlled by the retraction of section 11a into section 8.
  • the means for adapting an existing crane are formed purely by linked arms, and do not include any costly motors, hydraulic or other.
  • the displacement of the tool is obtained by using the ram 12a of the existing telescopic jib, or any other motorised device for controlling the telescoping of the jib.
  • the invention allows for a viable and inexpensive adaptation, and eliminates the need for having recourse to specialised devices, borer supports or other similar equipment.
  • a device comprising:
  • a telescopic jib including at least two sections of which a first section is pivotally mounted on the body and a second section is mounted for sliding relative to the first section;
  • the linkage includes a first arm having three v aligned and equally spaced pivot points and which is pivotally coupled by one extreme pivot point to the second section, a second arm having two aligned pivot points spaced apart by a distance equal to that separating adjacent pivot points of the first arm, the second arm being pivotally coupled by one pivot point to the first section and by the other pivot point to the intermediary pivot point of the first arm, and the work tool is suspended from the other extreme pivot point of the first arm.
  • first and second arms are pivotally coupled to the second and first sections respectively by at least one pair of arms of which each is provided with three aligned and equally spaced pivot points, the arms of the pair of arms being connected together by their intermediary pivot points and being connected to the first and second arms and to the second and first sections by their extreme pivot points.
  • a device comprising:
  • a telescopic jib including at least two sections of which a first section is pivotally mounted on the body and a second section is mounted so as to slide relative to the first section;
  • the linkage includes a first and further pairs of arms of which each arm is provided with three aligned and equally spaced pivot points, the two arms being connected together by their intermediary pivot points, the arms of the first pair being connected by one of their extreme pivot points to the first and second sections respectively, the first and further pairs of arms being connected together in succession, each arm of each further pair being connected by one of its extreme pivot points to one of the extreme pivot points of the corresponding arm of the preceding pair, and the last pair of arms remote from the first pair carries a first arm which is parallel and identical to that arm of the first pair which is connected to the second section and of which the extreme free pivot point forms the point of suspension of the work tool, and a second arm which is parallel to the other arm of the first pair and is provided with two pivot points, the spacing of which is equal to the spacing of the intermediary pivot point from one of the extreme pivot points of the other arm of the first pair, the second arm being connected to one of the arms of the last pair and to the intermediary pivot point of the first arm.
  • a device comprising: a body; a telescopic jib including at least two sections of which a first section is pivotally mounted on the body and a second section is mounted to slide relative to the first section;
  • first link being connected to the first section by a first pivot
  • second link being connected to the second section by a second pivot and the two links being connected together by a third pivot

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Civil Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Jib Cranes (AREA)
US470620A 1973-05-22 1974-05-16 Public works device comprises a body a telescopic jib Expired - Lifetime US3881556A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7318585A FR2230809B1 (it) 1973-05-22 1973-05-22

Publications (1)

Publication Number Publication Date
US3881556A true US3881556A (en) 1975-05-06

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ID=9119769

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US470620A Expired - Lifetime US3881556A (en) 1973-05-22 1974-05-16 Public works device comprises a body a telescopic jib

Country Status (10)

Country Link
US (1) US3881556A (it)
JP (1) JPS5710274B2 (it)
AR (1) AR205709A1 (it)
BE (1) BE815356A (it)
BR (1) BR7403956D0 (it)
DE (1) DE2424586A1 (it)
ES (1) ES426582A1 (it)
FR (1) FR2230809B1 (it)
GB (1) GB1455516A (it)
IT (1) IT1014226B (it)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0002291A2 (de) * 1977-11-16 1979-06-13 VANDAELE GEBROEDERS personenvennootschap met beperkte aansprakelijkheid Hydraulische Kernbohrvorrichtung
EP0192253A1 (en) * 1985-02-21 1986-08-27 Construction Robotics, Inc. Boom assembly
EP1407114A1 (en) * 2001-06-18 2004-04-14 Russell Mineral Equipment Pty. Ltd. Rock-bolting apparatus and method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2349533A1 (fr) * 1976-04-28 1977-11-25 Harnischfeger Gmbh Grue hydraulique montee sur vehicule
JPS53108104U (it) * 1977-02-04 1978-08-30
FR2449749A1 (fr) * 1979-02-26 1980-09-19 Lignones Hubert Support articule d'outil agricole
JPS58203854A (ja) * 1982-05-12 1983-11-28 雪印乳業株式会社 トレ−収容物の包装方法
CA1229333A (en) * 1984-09-07 1987-11-17 Bernard L. Gien Truck mounted drilling machine
JP2562811Y2 (ja) * 1991-05-22 1998-02-16 塩野義製薬株式会社 カプセル剤秤量選別装置
CN112470606B (zh) * 2020-12-19 2021-09-28 苏州础润环境修复科技有限公司 一种用于生态树池的自动挖坑装置及其工作方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771273A (en) * 1952-06-06 1956-11-20 Chicago Pneumatic Tool Co Roof bolting drill
US2927705A (en) * 1956-03-07 1960-03-08 Girardi Antonio Lawrence Orchard apparatus
US3095061A (en) * 1960-07-15 1963-06-25 Louie E Gregory Hydraulically operated lazy tongs structure
US3295800A (en) * 1963-10-31 1967-01-03 Atlas Copco Ab Positioning device for rock drills
US3306374A (en) * 1964-04-23 1967-02-28 Atlas Copco Ab Polar positioning device for rock drills
US3470981A (en) * 1967-07-20 1969-10-07 Agri Craft Inc Stress-compensated boom structure
US3476193A (en) * 1967-06-22 1969-11-04 Atlas Copco Ab Drill boom with parallel motion linkage means

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771273A (en) * 1952-06-06 1956-11-20 Chicago Pneumatic Tool Co Roof bolting drill
US2927705A (en) * 1956-03-07 1960-03-08 Girardi Antonio Lawrence Orchard apparatus
US3095061A (en) * 1960-07-15 1963-06-25 Louie E Gregory Hydraulically operated lazy tongs structure
US3295800A (en) * 1963-10-31 1967-01-03 Atlas Copco Ab Positioning device for rock drills
US3306374A (en) * 1964-04-23 1967-02-28 Atlas Copco Ab Polar positioning device for rock drills
US3476193A (en) * 1967-06-22 1969-11-04 Atlas Copco Ab Drill boom with parallel motion linkage means
US3470981A (en) * 1967-07-20 1969-10-07 Agri Craft Inc Stress-compensated boom structure

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0002291A2 (de) * 1977-11-16 1979-06-13 VANDAELE GEBROEDERS personenvennootschap met beperkte aansprakelijkheid Hydraulische Kernbohrvorrichtung
EP0002291A3 (de) * 1977-11-16 1979-07-25 VANDAELE GEBROEDERS personenvennootschap met beperkte aansprakelijkheid Hydraulische Kernbohrvorrichtung
EP0192253A1 (en) * 1985-02-21 1986-08-27 Construction Robotics, Inc. Boom assembly
US4645084A (en) * 1985-02-21 1987-02-24 Construction Robotics, Inc. Robot arm
EP1407114A1 (en) * 2001-06-18 2004-04-14 Russell Mineral Equipment Pty. Ltd. Rock-bolting apparatus and method
EP1407114A4 (en) * 2001-06-18 2006-06-28 Rme Underground Pty Ltd APPARATUS AND METHOD FOR INSTALLING ANCHOR BOLTS

Also Published As

Publication number Publication date
FR2230809A1 (it) 1974-12-20
AR205709A1 (es) 1976-05-31
GB1455516A (en) 1976-11-10
FR2230809B1 (it) 1976-04-23
BE815356A (fr) 1974-09-16
IT1014226B (it) 1977-04-20
BR7403956D0 (pt) 1974-12-31
ES426582A1 (es) 1976-07-01
JPS5710274B2 (it) 1982-02-25
JPS5020507A (it) 1975-03-04
DE2424586A1 (de) 1974-12-12

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