EP1091049B1 - Hydraulic excavator - Google Patents

Hydraulic excavator Download PDF

Info

Publication number
EP1091049B1
EP1091049B1 EP00121772A EP00121772A EP1091049B1 EP 1091049 B1 EP1091049 B1 EP 1091049B1 EP 00121772 A EP00121772 A EP 00121772A EP 00121772 A EP00121772 A EP 00121772A EP 1091049 B1 EP1091049 B1 EP 1091049B1
Authority
EP
European Patent Office
Prior art keywords
boom
roof supports
roof
cabin
excavator
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
EP00121772A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1091049A3 (en
EP1091049A2 (en
Inventor
Toshiharu Shinko Engineering Co. Ltd. Matsunami
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.)
Kobelco Construction Machinery Co Ltd
Original Assignee
Kobelco Construction Machinery Co Ltd
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 Kobelco Construction Machinery Co Ltd filed Critical Kobelco Construction Machinery Co Ltd
Publication of EP1091049A2 publication Critical patent/EP1091049A2/en
Publication of EP1091049A3 publication Critical patent/EP1091049A3/en
Application granted granted Critical
Publication of EP1091049B1 publication Critical patent/EP1091049B1/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
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/16—Cabins, platforms, or the like, for drivers
    • 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
    • E02F9/16—Cabins, platforms, or the like, for drivers
    • E02F9/163—Structures to protect drivers, e.g. cabins, doors for cabins; Falling object protection structure [FOPS]; Roll over protection structure [ROPS]
    • 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
    • E02F3/325—Backhoes of the miniature type
    • 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
    • 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
    • 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
    • E02F9/2025—Particular purposes of control systems not otherwise provided for
    • E02F9/2033—Limiting the movement of frames or implements, e.g. to avoid collision between implements and the cabin

Definitions

  • the present invention relates to a compact hydraulic excavator.
  • an upper rotating body 2 is mounted on a crawler type traveling body 1 rotatably about a vertical axis, as shown in FIGS. 4 and 5.
  • a cabin 4 is provided in a central portion of the upper surface of the upper rotating body 2.
  • the cabin 4 is provided downward of a seat with an engine and other machineries (not shown) and on both left and right sides with lever type operating devices 5, 5.
  • a handrail 6 is mounted forward of the cabin 4.
  • a work attachment 7 is mounted directly forward of the handrail 6.
  • the work attachment 7 is provided with a boom 8.
  • an arm 9 is mounted at the distal end of the boom 8
  • a bucket 10 is mounted at the distal end of the arm 9.
  • Reference numeral 11 denotes a boom cylinder for raising and lowering the boom 8.
  • Numeral 12 denotes an arm cylinder for operating the arm 9.
  • Numeral 13 denotes a bucket cylinder for operating the bucket 10.
  • the boom 8 is mounted to be swung in a lateral direction about a vertical axis so that groove excavation work can be done easily.
  • the boom 8 is driven by a swing cylinder 14.
  • a front rail 6b is mounted horizontally and formed in an inverted U shape between vertical rails 6a, 6a on both left and right sides.
  • the handrail 6 is used as a railing for supporting the body by hands when an operator leans forward to confirm the excavating part or when the operator gets on and off.
  • the front rail 6b of the handrail 6 interferes with the boom 8 in a stood upright state of the boom 8, as shown by the phantom outline in FIG. 4. Therefore, the maximum upright angle of the boom 8 is limited to an angle smaller than an original angle of the excavator (hereinafter referred to as a specification angle). This poses a problem that the minimum radius R1 of the turning circle of the upper construction body including the work attachment 7 increases.
  • the whole height of the handrail 6 be set to be low so as not to interfere with the boom 8. However, if so, the longitudinal rails 6a, 6a particularly often used are lowered, and the functionality as a railing means decreases.
  • the compact excavator of this kind is normally not provided with a roof.
  • GB 2 184 419 A shows an excavator with a closed front cover (wire mesh) and a sun shade above an operator's seat. Between the sun shade and the front cover, there extends a transparent plate and forms a window screen. The sun shade is supported by a pair of rear support posts arranged rearward of the operators seat.
  • the hydraulic excavator according to the present invention comprises the features according to claim 1.
  • the hydraulic excavator according to the present invention may have the following constitution: a frontal railing and connecting bar provided at an arrangement not to interfere with the boom between the roof supports.
  • Railings and left and right front roof supports 15, 15, and left and right rear roof supports 16, 16 are stood upright on both left and right sides forward of a cabin 4 in an upper rotating body 2 of a excavator body 3, and on both left and right sides rearward of the cabin 4, respectively.
  • a roof 17 for covering the cabin 4 from the top to protect an operator from falling things are mounted over the upper ends of the supports 15, 15, 16, 16.
  • a boom 8 constituting a work attachment 7 swingable to the left and right is fixed centrally forward of the upper rotating body 2. Both roof supports 15, 15 are mounted so as not to interfere with the boom 8 during raising and lowering and at any swing position of the boom 8.
  • a frontal railing and connecting bar 18 is mounted horizontally between both the front roof supports 15, 15.
  • a handrail serving as a railing when one observes the a forward excavating area and gets in and out of the cabin (4) is constituted by both front roof supports 15, 15.
  • the connecting bar 18 is mounted at a vertical position (a position closer to an intermediate lower part) not to interfere with the boom 8 in the whole operation range of the boom 8.
  • the minimum rotating radius R2 of the upper rotating body including the work attachment 7 is reduced as compared with the minimum rotating radius R1 of the conventional excavator shown in FIGS. 4 and 5. Because the boom 8 is stood upright to a specified angle in a state not to interfere with the handrail (front roof supports 15, 15 and connecting bar 18) and being projected on the maximum and rearward (cabin 4 side) of both the roof supports 15, 15.
  • both the roof supports 15, 15 can be used as a vertical railing also which is highly appreciated during operation and at the time of getting on and off, the railing function is not reduced compared to the conventional case where the height of the whole handrail is lowered. Further, it is not necessary to secure separate spaces for the roof supports and the longitudinal railing. Because of this, both of them can be installed naturally in the minimum space.
  • a frontal railing and connecting bar 18 is provided at an arrangement not to interfere with the boom 8 between both roof supports 15, 15. Because of this, the railing function can be strengthened, and the strength of the roof supports 15, 15 can be increased.
  • the connecting bar 18 is provided between both the roof supports 15, 15 as in the above-described embodiment in order to enhance the railing function and the strength of the front roof supports 15, 15.
  • the connecting bar 18 need not be provided, depending on the necessity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Shovels (AREA)
  • Earth Drilling (AREA)
EP00121772A 1999-10-07 2000-10-05 Hydraulic excavator Expired - Lifetime EP1091049B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP28703899A JP3638831B2 (ja) 1999-10-07 1999-10-07 油圧ショベル
JP28703899 1999-10-07

Publications (3)

Publication Number Publication Date
EP1091049A2 EP1091049A2 (en) 2001-04-11
EP1091049A3 EP1091049A3 (en) 2002-04-03
EP1091049B1 true EP1091049B1 (en) 2004-01-14

Family

ID=17712252

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00121772A Expired - Lifetime EP1091049B1 (en) 1999-10-07 2000-10-05 Hydraulic excavator

Country Status (5)

Country Link
EP (1) EP1091049B1 (ko)
JP (1) JP3638831B2 (ko)
KR (1) KR100406854B1 (ko)
AT (1) ATE257875T1 (ko)
DE (1) DE60007703T2 (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4742195B2 (ja) * 2004-03-22 2011-08-10 ヤンマー建機株式会社 バックホー
NL2004954C2 (nl) * 2010-05-31 2011-12-01 Hudson Bay Holding B V Mobiele inrichting.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963131A (en) * 1975-01-06 1976-06-15 Hydra-Mac, Inc. Front-end skid steer loader
JPS57170320U (ko) * 1981-04-21 1982-10-27
JPS62148725A (ja) * 1985-12-23 1987-07-02 Kubota Ltd 全旋回型バックホウ作業車
JPS62202130A (ja) * 1986-02-28 1987-09-05 Kubota Ltd バックホウ
JPH054414Y2 (ko) * 1987-01-22 1993-02-03
JPH0635824Y2 (ja) * 1988-07-20 1994-09-21 セイレイ工業株式会社 移動作業車におけるキャノピーの支持装置
JP2668987B2 (ja) * 1988-09-30 1997-10-27 松下電器産業株式会社 データ処理装置
JP2895284B2 (ja) * 1991-10-31 1999-05-24 ヤンマーディーゼル株式会社 旋回作業車
JP2812417B2 (ja) * 1993-01-20 1998-10-22 ヤンマーディーゼル株式会社 旋回型掘削作業車
JP2001090116A (ja) * 1999-09-22 2001-04-03 Hitachi Constr Mach Co Ltd 旋回式建設機械

Also Published As

Publication number Publication date
JP3638831B2 (ja) 2005-04-13
EP1091049A3 (en) 2002-04-03
DE60007703D1 (de) 2004-02-19
JP2001107389A (ja) 2001-04-17
ATE257875T1 (de) 2004-01-15
EP1091049A2 (en) 2001-04-11
DE60007703T2 (de) 2004-12-02
KR20010039982A (ko) 2001-05-15
KR100406854B1 (ko) 2003-11-21

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