EP0892115A1 - Schaufelbagger - Google Patents

Schaufelbagger Download PDF

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Publication number
EP0892115A1
EP0892115A1 EP97305346A EP97305346A EP0892115A1 EP 0892115 A1 EP0892115 A1 EP 0892115A1 EP 97305346 A EP97305346 A EP 97305346A EP 97305346 A EP97305346 A EP 97305346A EP 0892115 A1 EP0892115 A1 EP 0892115A1
Authority
EP
European Patent Office
Prior art keywords
link
excavator
rotary section
section
power shovel
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Withdrawn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
EP97305346A
Other languages
English (en)
French (fr)
Inventor
Rinta c/o K.K. Takeuchi Seisakusho Denda
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.)
Takeuchi Manufacturing Co Ltd
Original Assignee
Takeuchi Manufacturing 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
Priority to JP8054751A priority Critical patent/JPH09242104A/ja
Application filed by Takeuchi Manufacturing Co Ltd filed Critical Takeuchi Manufacturing Co Ltd
Priority to EP97305346A priority patent/EP0892115A1/de
Publication of EP0892115A1 publication Critical patent/EP0892115A1/de
Withdrawn legal-status Critical Current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
    • E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
    • E02F3/382—Connections to the frame; Supports for booms or arms
    • E02F3/384—Connections to the frame; Supports for booms or arms the boom being pivotable relative to the frame about a vertical axis

Definitions

  • the present invention relates to a power shovel, more precisely relates to a power shovel comprising: a vehicle section; a rotary section being provided on the vehicle section and being capable of rotating in a rotational plane, which is parallel to a plane in which the vehicle section runs; and an excavator being provided to the rotary section and having a bucket , an arm and a boom.
  • a conventional power shovel which comprises the vehicle section, the rotary section, and the excavator, is shown in Fig. 5.
  • a vertical pin 31 is vertically provided to the rotary section 30.
  • the vertical pin 31 is arranged perpendicular to a plane in which the power shovel (the vehicle section) runs.
  • a boom bracket 32 is pivotably attached to the vertical pin 31.
  • a boom foot (a rear end) of the boom 33 is pivotably connected to the boom bracket 32, so the boom 33 is capable of vertically turning or swinging.
  • the excavator 35 can be turned rightwardly and leftwardly around the vertical pin 31 by a swing cylinder unit 34, whose one end is pivotably connected to the boom bracket 32 and whose the other end is pivotably connected to the rotary section 30, and the boom bracket 32.
  • the vertical pin 31 is provided to a front end of the rotary section 30.
  • the vertical pin 31 is separated a proper distance away from a rotary axis "X" of the rotary section 30.
  • the excavator 35 is capable of leftwardly turning from a standard position (shown by solid lines) to a position "A" (shown by two-dot chain lines); maximum turning angle “ ⁇ 1" is about 90 ° .
  • the excavator 35 is capable of rightwardly turning from the standard position to a position "B”; maximum turning angle " ⁇ 2" is about 50° .
  • the boom-swing type power shovel is used to excavate ditches, which are located outer side of a width of the power shovel (or the vehicle section). Ditches are usually excavated parallel to a running direction of the power shovel. Namely, a center line of the excavator 35 is kept parallel to the running direction of the power shovel while excavating ditches.
  • a distance between the power shovel (the vehicle section) and a ditch is defined by the turning angle of the boom bracket 32 and the distance between the vertical pin 31 the rotary axis "X".
  • the distance between the vertical pin 31 the rotary axis "X" is usually designed according to the size of the power shovel. In the case of turning the boom bracket 90° , the distance between the ditch and the power shovel is maximum.
  • FIG. 6 A method of excavating a ditch will be explained with reference to Fig. 6.
  • the boom bracket 32 and the excavator 35 are leftwardly turned 90 ° (maximum), with respect to the rotary section 30; the rotary section 30 is rightwardly turned 90 ° with respect to the vehicle section 36.
  • the excavator 35 is parallel to the vehicle section 36, so the ditch can be excavated in the running direction of the vehicle section 36.
  • An object of the present invention is to provide a power shovel, in which an operator on a rotary section can fully watch an excavator, especially a bucket, without twisting his neck when the excavator is sidewardly shifted.
  • the power shovel of the present invention comprises:
  • the excavator is sidewardly shifted by the boom bracket, the first link and the second link, so an operator, who is sitting on the rotary section, easily and fully watch the excavator, especially the bucket, without twisting his body or neck when the excavator is shifted sidewardly. So the operator can execute operation safely.
  • a distance between the one end of the first link and the one end of the second link, which are pivotably connected to the boom bracket, may be shorter than a distance between the other end of the first link and the other end of the second link, which are pivotably connected to the rotary section.
  • Fig. 1 is a plan view of a power shovel of an embodiment of the present invention
  • Fig. 2 is a side view of the power shovel
  • Fig. 3 is a plan view of the power shovel whose excavator is shifted leftward
  • Fig. 4 is a plan view of the power shovel whose excavator is shifted rightward.
  • a vehicle section 20 is a lower part of the power shovel.
  • the vehicle section 20 has a pair of crawlers.
  • a rotary section 9 is an upper part of the power shovel.
  • the rotary section 9 is provided on the vehicle section 20.
  • the rotary section 9 is capable of rotating about a rotary axis "S", which is vertically fixed to the vehicle section 20.
  • the rotary section 9 rotates in a rotational plane, which is parallel to a plane in which the vehicle section 20 runs.
  • the vehicle section 20 (the crawlers) is driven by a known mechanism, and the rotary section 9 is rotated by a known mechanism, too. So details of the mechanisms will be omitted.
  • An excavator 22 is provided to the rotary section 9.
  • the excavator 22 includes a boom 1, an arm 2 and a bucket 3.
  • the boom 1, the arm 2 and the bucket 3 are driven by hydraulic cylinder units 22a (see Fig. 2).
  • a first link 5 is horizontally arranged.
  • One end of the first link 5 is pivotably connected to one end (the right end in Fig. 1) of the boom bracket 4 by a first link pin 7; the other end of the first link 5 is pivotably connected to the rotary section 9, on one side (the right side in Fig. 1) of a center line "LL" of the rotary section 9, by a second link pin 8.
  • the first link 5 can be moved in a plane parallel to said rotational plane of the rotary section 9.
  • a second link 6 is horizontally arranged.
  • One end of the second link 6 is pivotably connected to the other end (the left end in Fig. 1) of the boom bracket 4 by a third link pin 10; the other end of the second link 6 is pivotably connected to the rotary section 9, on the other side (the left side in Fig. 1) of the center line "LL", by a fourth link pin 11.
  • the second link 6 can be moved in a plane parallel to said rotational plane of the rotary section 9.
  • the other end of the first link pin 5 (or the second link pin 8) and the other end of the second link 6 (or the fourth link pin 11) are symmetrically arranged with respect to the center line "LL" of the rotary section 9 (see Fig. 1).
  • the first link 5 and the second link 6 have the same length.
  • a distance between the one end of the first link 5 (or the first link pin 7) and the one end of the second link 6 (or the third link pin 10) is shorter than a distance between the other end of the first link 5 (or the second link pin 8) and the other end of the second link 6 (or the fourth link pin 11).
  • the positions of the second link pin 8 and the fourth link pin 11 in the rotary section 9 are not limited.
  • the first link 5 and the second link 6 may have mutually different length.
  • the second link pin 8 and the fourth link pin 11 may be dissymmetrically arranged with respect to the center line "LL", and the first link 5 and the second link 6 may have mutually different length.
  • a swing cylinder unit 12 is provided to the rotary section 9.
  • One end of the cylinder unit 12 (a front end 12a of a cylinder rod) is pivotably connected to an extended section 5a, which is extended from the first link 5; the other end of the cylinder unit 12 (a rear end 12b of the cylinder unit 12) is pivotably connected to the rotary section 9.
  • the swing cylinder unit 12 drives a link mechanism, which includes the boom bracket 4, the first link 5 and the second link 6, so as to shift the excavator 22 rightwardly and leftwardly.
  • the link mechanism may be driven by a plurality of cylinder units. Further, other means, e.g., a motor, may be employed instead of the cylinder unit 12. Note that, in the case of the hydraulic power shovel like the present embodiment, the hydraulic cylinder unit is preferably employed as the cylinder unit 12.
  • the link mechanism is a four-joint link mechanism.
  • the four-joint mechanism is not a parallel link mechanism. But the four-joint mechanism of the present embodiment is made symmetry with respect to the center line "LL" (see Fig.
  • the boom bracket 4 is connected with the rotary section 9 by the first link 5 and the second link 6, which are pivotably connected by the link pins 7, 8, 10 and 11. Further, the front end 12a of the swing cylinder unit 12 is pivotably connected to the first link 5. Namely, comparing with the conventional power shovel (see Fig. 5), the power shovel of the present embodiment further has the first link 5, the second link 6 and the link pins 7, 8, 10 and 11. Unlike the conventional power shovel, the front end 12a of the swing cylinder unit 12 is pivotably connected to the first link 5 (or the second link 6).
  • the boom bracket 4 which is provided in front of the rotary section 9, is connected with the rotary section 9 by the first link 5 and the second link 6.
  • the center line “LL” of the rotary section 9 is coincided with or made parallel to a center line "P" of the excavator 22 (see Fig. 1).
  • the state shown in Fig. 1 is kept by the swing cylinder unit 12, which is connected to the first link 5. Note that, this state corresponds to the state of the conventional power shovel shown in Fig. 5 (shown by the solid lines), in which the excavator 33 is located at the center.
  • the first link 5 By extending and shortening the rod of the swing cylinder unit 12, the first link 5 rightwardly and leftwardly turned round the second link pin 8. Simultaneously, the boom bracket 4, which is pivotably connected to the one end of the first link 5, is rightwardly and leftwardly moved by the first link pin 7.
  • the second link 6, which is pivotably connected to the boom bracket 4, is also turned with the movement of the boom bracket 4.
  • the boom bracket 4 By the first link 5 and the second link 6, the boom bracket 4 can be moved to the right side and the left side of the center line "LL" of the rotary section 9.
  • the moving stroke of the boom bracket 4 depends on the length of the links 5 and 6, etc..
  • said link mechanism of the present embodiment is a four-joint parallel link mechanism
  • the boom bracket 4 is moved parallel to a front edge 9a of the rotary section 9.
  • the distance between the power shovel and a ditch to be excavated is equal to the moving distance of the boom bracket 4.
  • the link mechanism is not the parallel link as described above, the center line "P" of the excavator 22 is slightly turned leftward with respect to the center line “LL” of the rotary section 9 when the boom bracket 4 is moved rightward (see Fig. 4).
  • the center line “P” of the excavator 22 is slightly turned rightward with respect to the center line “LL” of the rotary section 9 when the boom bracket 4 is moved leftward (see Fig. 3).
  • the link mechanism is designed according to the moving stroke of the boom bracket 4, angle between the boom bracket 4 and the center line "LL” of the rotary section 9, the distance between the power shovel and the ditch to be excavated, etc..
  • the link mechanism is not the parallel link mechanism, the excavator 22 can be greatly shifted or offseted with respect to the rotary section 9, the operator in the seat 14 can fully watch the excavator 22, especially the bucket 3, without twisting his neck. Namely, positional interrelationship between the bucket 3 and the operator's seat 14 can be proper.
  • the center line "P" of the excavator 22 is parallel to the center line "R” of the vehicle section 9, namely the excavator 22 is made parallel to the running direction of the power shovel.
  • the excavator 22 is properly leftwardly shifted or offseted with respect to the center line "LL" of the rotary section 9.
  • the rod of the swing cylinder unit 12 is shortened or retracted.
  • the first link 5 is turned rightward, so that the boom bracket 4 is moved rightward, and the excavator 22 leftwardly turned with respect to the center line "LL" of the rotary section 9.
  • the rotary section 9 is turned rightward, and the center line "P" of the excavator 22 is parallel to the center line "R” of the vehicle section 20, namely the excavator 22 is made parallel to the running direction of the power shovel.
  • the excavator 22 is properly rightwardly shifted or offseted with respect to the center line "LL" of the rotary section 9.
  • the power shovel of the present embodiment will be compared with the conventional power shovel.
  • the excavator 35 is rightwardly or leftwardly turned, with respect to the rotary section 30, 90° at the most; the rotary section 30 is turned in the opposite direction 90 ° at the most. So the excavator 30 can be parallel to the vehicle section, namely the excavator 35 is made parallel to the running direction of the power shovel, and a ditch can be excavated parallel to the running direction thereof. In this case, the operator watches the excavator 35 with twisting his body or neck toward the excavator 35 while operating the power shovel.
  • the center line "P" of the excavator 22 is slightly turned rightward of leftward with respect to the center line "LL" of the rotary section 9 when the boom bracket 4 is moved rightward or leftward with respect to the rotary section 9.
  • the operator's seat is usually located in the vicinity of the center of the rotary section 9, so the operator feels as if the excavator 22 turns round the operator's seat 14. And the operator can fully watch the excavator 22, especially the bucket 3, from the operator's seat 14 without twisting his body or neck. Without twisting the body or the neck, the operator can work in an easy and comfortable posture.
  • the excavator 22 is slightly turned with respect to the center line "LL" of the rotary section 9, on which the operator sits, so the operator can fully watch the excavator 22. With this structure, the operator can easily and safely operate the power shovel without accident and misoperation.
  • the non-parallel link mechanism is employed, so the excavator 22 is slightly turned rightward or leftward with respect to the center line "LL" of the rotary section 9 when the boom bracket 4 is moved righward and leftward with respect thereto. By this action, the excavator 22 can be greatly shifted or offseted sideward with respect to the rotary section 9. If the link mechanism including the first link 5 and the second link 6 is the parallel link, effective offset distance of the excavator 22 will be only "L1" (see Fig. 3); in the case of non-parallel link of the present embodiment, the excavator 22 can be greatly shifted with distance "L2" (see Fig. 2).
  • the link mechanism may be the parallel link mechanism; and the length of the first link 5 and the second link 6 may be mutually different if the excavator 22 can be properly shifted to one side. In both cases too, the operator can fully watch the excavator without twisting his body or neck, so safe and comfortable operation can be executed as well as the above described embodiment.

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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)
  • Shovels (AREA)
EP97305346A 1996-03-12 1997-07-17 Schaufelbagger Withdrawn EP0892115A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8054751A JPH09242104A (ja) 1996-03-12 1996-03-12 パワーショベル
EP97305346A EP0892115A1 (de) 1996-03-12 1997-07-17 Schaufelbagger

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8054751A JPH09242104A (ja) 1996-03-12 1996-03-12 パワーショベル
EP97305346A EP0892115A1 (de) 1996-03-12 1997-07-17 Schaufelbagger

Publications (1)

Publication Number Publication Date
EP0892115A1 true EP0892115A1 (de) 1999-01-20

Family

ID=26147523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97305346A Withdrawn EP0892115A1 (de) 1996-03-12 1997-07-17 Schaufelbagger

Country Status (2)

Country Link
EP (1) EP0892115A1 (de)
JP (1) JPH09242104A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109469130B (zh) * 2018-11-26 2021-05-07 马鞍山金顺来工业设计有限公司 一种双向工作挖掘机
CN109469129B (zh) * 2018-11-26 2021-05-07 马鞍山金顺来工业设计有限公司 一种挖掘机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3234020A1 (de) * 1982-09-14 1984-03-15 O & K Orenstein & Koppel Ag, 1000 Berlin Anordnung zum verschwenken eines anbauhalters der ausruestung eines hydraulikbaggers
EP0131939A1 (de) * 1983-07-14 1985-01-23 Karl Schaeff GmbH & Co. Fahrbarer hydraulischer Löffelbagger
EP0176829A1 (de) * 1984-10-01 1986-04-09 MACMOTER S.p.A. Kompaktbagger
GB2180522A (en) * 1985-09-19 1987-04-01 Schaeff Karl Gmbh & Co Lateral-offset arrangement for a digging machine knee
EP0440895A1 (de) * 1990-02-05 1991-08-14 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Bagger, insbesondere Löffelbagger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3234020A1 (de) * 1982-09-14 1984-03-15 O & K Orenstein & Koppel Ag, 1000 Berlin Anordnung zum verschwenken eines anbauhalters der ausruestung eines hydraulikbaggers
EP0131939A1 (de) * 1983-07-14 1985-01-23 Karl Schaeff GmbH & Co. Fahrbarer hydraulischer Löffelbagger
EP0176829A1 (de) * 1984-10-01 1986-04-09 MACMOTER S.p.A. Kompaktbagger
GB2180522A (en) * 1985-09-19 1987-04-01 Schaeff Karl Gmbh & Co Lateral-offset arrangement for a digging machine knee
EP0440895A1 (de) * 1990-02-05 1991-08-14 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Bagger, insbesondere Löffelbagger

Also Published As

Publication number Publication date
JPH09242104A (ja) 1997-09-16

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