EP0738651A2 - Aufbaustruktur eines Gabelhubwagens - Google Patents

Aufbaustruktur eines Gabelhubwagens Download PDF

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Publication number
EP0738651A2
EP0738651A2 EP96106023A EP96106023A EP0738651A2 EP 0738651 A2 EP0738651 A2 EP 0738651A2 EP 96106023 A EP96106023 A EP 96106023A EP 96106023 A EP96106023 A EP 96106023A EP 0738651 A2 EP0738651 A2 EP 0738651A2
Authority
EP
European Patent Office
Prior art keywords
attaching
counterweight
body structure
unit
attaching portion
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.)
Granted
Application number
EP96106023A
Other languages
English (en)
French (fr)
Other versions
EP0738651A3 (de
EP0738651B2 (de
EP0738651B1 (de
Inventor
Akitoshi c/o K.K. Toyoda Jidoshokki Jindo
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.)
Toyota Industries Corp
Original Assignee
Toyota Industries Corp
Toyoda Jidoshokki Seisakusho KK
Toyoda Automatic Loom Works 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=14090732&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0738651(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Toyota Industries Corp, Toyoda Jidoshokki Seisakusho KK, Toyoda Automatic Loom Works Ltd filed Critical Toyota Industries Corp
Publication of EP0738651A2 publication Critical patent/EP0738651A2/de
Publication of EP0738651A3 publication Critical patent/EP0738651A3/de
Application granted granted Critical
Publication of EP0738651B1 publication Critical patent/EP0738651B1/de
Publication of EP0738651B2 publication Critical patent/EP0738651B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07554—Counterweights

Definitions

  • the present invention relates to body structure of industrial vehicle such as a fork lift, and more particularly relates to body structure suitable for a rear wheel drive, battery-operated, three-wheeled fork lift.
  • Fig. 5 schematically shows a body structure of a conventional rear wheel drive, battery-operated, three-wheeled fork lift.
  • the illustrated fork lift has a drive unit 34 of the type vertically placing a drive motor 33 for driving a rear wheel, the drive unit 34 being attached to the rear side of a frame 31 together with a power steering oil motor 35 and controller 36.
  • a large quantity of strengthening material such as a thick steel plate 37 or rib is welded with the rear side of the frame 31 to secure a required strength for attaching such mechanical hardwares as the drive unit 34 and controller 36.
  • a counterweight 32 is mounted on the rear end portion of the frame 31, the counterweight 32 having a horizontal section in the form of a substantially U-shape so as to surround mechanical hardwares and strengthening material for supporting them.
  • Such body structure is disclosed, for example, in Japanese Patent Laid-Open No. 62-36299 and Japanese Patent Laid-Open No. 5-24555.
  • one of the characteristics of a three-wheeled, rear wheel drive fork lift is its compactness and capability of making a small turn. In order to fully use this characteristic, it is necessary to reduce the overall length of the vehicle as much as possible. For this reason, a rearward extension from the outer surface of the counterweight must be avoided.
  • the counterweight in the conventional three-wheeled, rear wheel drive fork lift has a constraint on its extension with respect to both the inner surface side and the outer surface side thereof. It has thus been very difficult to clear such constraint to obtain a required weight. Further, since a large quantity of strengthening material such as a thick steel plate or rib is welded with the rear portion of the frame, material cost and processing cost are increased to result in a problem of high cost.
  • the body structure according to the present invention includes: a unit attaching portion formed on the counterweight mounted at a rear end portion of the frame; and a drive unit fixed to the unit attaching portion.
  • a counterweight 1 formed as a cast product includes a rear portion 2 constituting a rear end portion of the vehicle and left and right side portions 3 monolithically extended frontward from the rear portion 2 to constitute the two side portions of the rear end of the vehicle.
  • the counterweight 1 is to be mounted on a rear end portion of the frame (not shown) of a fork lift.
  • the rear portion 2 of the counterweight 1 is formed into a substantially arch-like shape with the front surface side thereof being formed as a concave of the arch.
  • the outer surface (rear surface) thereof is provided as a curved surface having a curvature approximated to the minimum turning clearance radius of the vehicle.
  • a unit attaching portion 4 for attaching a drive unit 11 is formed on the inner surface side of the rear portion 2.
  • the unit attaching portion 4 is formed into the form of a plate extended substantially horizontally in a direction toward the front with having a required thickness substantially at the mid height on the inner surface of the rear portion 2, the front end edge thereof reaching near the end surface of the side portions 3 and a substantially circular attaching hole vertically penetrating through substantially the center portion thereof.
  • the drive unit 11 to be attached to the unit attaching portion 4 includes: a gear case 12; a tire 13 rotatably attached to the gear case 12 around the horizontal axial line thereof; a drive motor 14 serving as a driving unit assembled in its vertical position with an upper portion of the gear case 12; an array of gears (not shown) contained in the gear case 12 and transmitting the driving force of the drive motor 14 to the tire 13; and a substantially ring-like turning base 15 for rotatably supporting an upper end portion of the gear case 12 around a vertical axis thereof through a bearing (not shown).
  • the members except the drive motor 14 are attached to a lower surface of the unit attaching portion 4 of the counterweight 1. That is, the unit attaching portion 4 has an attaching surface formed by the lower surface of the peripheral edge of the attaching hole 5, and the turning base 15 is detachably/reattachably tighten to the attaching surface with its upper surface abutting thereagainst by means of a plurality of bolts 16 which are inserted from the upper surface side of the unit attaching portion 4. It should be noted that the attaching surface of the unit attaching portion 4 is processed into a horizontal plane, and the bolt holes to be formed on the attaching portion 4 are assured with their horizontal aspect by means of spot facing.
  • the drive motor 14 is placed on an upper end surface of the gear case 12 through the attaching hole 5 from the top of the unit attaching portion 4, and a peripheral edge portion of an attaching flange 17 thereof is fixed detachably/reattachably to the upper end surface of the gear case 12 by means of a suitable number of fixing bolts 18. That is, the drive motor 14 of the drive unit 11 is so constructed that it is detached/attached from the top of the unit attaching portion 4. In this manner, of the drive unit 11, only the turning base 15 is fixed to the counterweight 1 and the remaining members are provided as capable of a horizontal rotation for the purpose of steering.
  • the gear case 12 of the drive unit 11 is attached from the lower surface side of the unit attaching portion 4 and the drive motor 14 is attached to the gear case 12 from the upper surface side of the unit attaching portion 4 through the attaching hole 5.
  • the portions corresponding to the bolt attaching positions of the inner peripheral edge of the attaching hole 5 are extended inwardly as shown in Fig. 3 to form protuberances 5a.
  • protuberances 17a are formed by outwardly extending the portions of the peripheral edge of the attaching flange 17 corresponding to the bolt attaching positions.
  • a predetermined gap is required between the end surface of the hole side protuberance 5a and the end surface of the flange side protuberance 17a in order to avoid interference of the protuberances 5a, 17a with each other in the rotating direction of the drive unit 11.
  • the end surface of the hole side protuberance 5a is processed after the forming of the counterweight 1 to secure the required gap therefrom to the flange side protuberance 17a.
  • a substantially block-like motor attaching portion 6 for attaching an oil motor 19 for effecting power steering is formed on a lower side of the inner surface of one side portion 3 of the counterweight 1.
  • the motor attaching portion 6 is processed so that a vertical front surface thereof is provided as an attaching surface 6a.
  • the oil motor 19 with its axis placed along a vertical direction is detachably and attachably fixed to the attaching surface 6a at a base plate 20 thereof by means of fixing bolt 21.
  • a steering chain 24 is then extended over a driving sprocket 22 on the motor shaft and a large-diameter follower rail 23 formed on the outer periphery of an upper portion of the gear case 12.
  • a laterally extended opening 8 is formed on the rear portion 2 of the counterweight 1 at a position suitable for the maintenance of the steering chain 24.
  • the opening is usually closed by a cover 9 which may be removed and reattached.
  • controller attaching portions 7 for attaching a controller 25 are formed on an upper portion of the front end surface of the left and right side portions 3 of the counterweight 1.
  • the controller attaching portion 7 is processed so as to provide an attaching surface 7a by its vertical front surface.
  • a base plate 26 of the controller 25 disposed in a manner extended left and right over the attaching surfaces 7a is detachably and attachably fixed thereto by means of fixing bolts 27.
  • the counterweight 1 is used as a rear frame by assembling such mechanical hardwares as the drive unit 11, oil motor 19 and controller 25 with the counterweight 1.
  • the rear portion of the frame in the fork lift requires no strengthening members and their welding such as a thick steel plate for attaching mechanical hardwares and ribs for reinforcing the same which have been required in the conventional construction.
  • the rear portion of the frame is simplified in construction and a reduction in cost is achieved.
  • the conventional type where the mechanical hardwares are mounted on the frame side requires a gap to be provided in order to avoid interference with the mechanical hardwares and strengthening members for attaching them. Since, however, the above described gap need not be considered when employing the construction where the mechanical hardwares are attached to the counterweight 1 as in the present embodiment, the constraint with respect to space is eliminated and at the same time it becomes possible to set the shape of the inner surface of the counterweight 1 at will whereby weight adjustment may be readily performed.
  • the counterweight 1 may be designed as a single unit including the drive unit 11, oil motor 19 and controller 25 to be attached thereto, the space efficiency thereof is improved so that a required weight may be readily obtained within a limited vehicle dimension (overall length and vehicle width).
  • oil motor 19 and controller 25 becomes possible by respectively providing the unit attaching portion 4 on a substantially center portion of the front surface of the rear portion 2 of the counterweight 1, the motor attaching portion 6 on a lower portion of the inner surface of one of the side portions 3 and the controller attaching portions 7 on an upper portion of the front surface of the left and right side portions 3.
  • a unit attaching portion 4 extended substantially horizontally in a direction toward the front is formed on a front surface of a rear portion 2 of the counterweight 1 to be mounted on a rear end portion of the frame, and a drive unit 11 for driving a rear wheel is attached thereto.
  • controller attaching portions 7 are formed on an upper part of front surface of two side portions 3 of the counterweight 1, and a controller 25 is attached thereto.
  • a motor attaching portion 6 extended inwardly to provide an attaching surface by its front surface is formed on an inner surface of one of the side portions 3 of the counterweight 1, and an oil motor 19 for power steering is attached thereto.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Jib Cranes (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Body Structure For Vehicles (AREA)
EP96106023A 1995-04-19 1996-04-17 Aufbaustruktur eines Gabelhubwagens Expired - Lifetime EP0738651B2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP7093737A JP3067581B2 (ja) 1995-04-19 1995-04-19 産業車両の車体構造
JP93737/95 1995-04-19
JP9373795 1995-04-19

Publications (4)

Publication Number Publication Date
EP0738651A2 true EP0738651A2 (de) 1996-10-23
EP0738651A3 EP0738651A3 (de) 1998-03-18
EP0738651B1 EP0738651B1 (de) 2002-01-23
EP0738651B2 EP0738651B2 (de) 2005-08-10

Family

ID=14090732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96106023A Expired - Lifetime EP0738651B2 (de) 1995-04-19 1996-04-17 Aufbaustruktur eines Gabelhubwagens

Country Status (3)

Country Link
EP (1) EP0738651B2 (de)
JP (1) JP3067581B2 (de)
DE (1) DE69618699T3 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2347132A (en) * 1999-02-27 2000-08-30 Translift Engineering Limited Lift truck
EP1298039A1 (de) * 2001-10-01 2003-04-02 Still S.A.R.L. Rahmen für eine mobile Arbeitsmaschine
DE19849753B4 (de) * 1998-10-28 2008-05-08 Linde Material Handling Gmbh Flurförderzeug mit einem Heckgewicht und einem Verbrennungsmotor
FR2915741A1 (fr) * 2007-05-03 2008-11-07 M L M Soc Par Actions Simplifi Dispositif formant preparateur de commande
US7823402B2 (en) 2005-10-04 2010-11-02 Mitsubishi Electric Corporation Air-conditioner unit and method of conveying the same
DE19849770B4 (de) * 1998-10-28 2016-03-03 Linde Material Handling Gmbh Gabelstapler
CN107827001A (zh) * 2017-11-06 2018-03-23 陈永 一种汽车配件表面电泳漆处理吊装装置

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1321177B1 (it) * 2000-04-21 2003-12-30 Carrelli Elevatori Cesab Carrello elevatore a raggio di sterzatura ridotto .
KR100421550B1 (ko) * 2000-12-09 2004-03-09 김문영 후륜이 조향과 구동을 겸하는 리치형 전동 지게차
JP2006062798A (ja) * 2004-08-25 2006-03-09 Tcm Corp カウンタバランス型バッテリフォークリフト
JP4900737B2 (ja) * 2009-06-25 2012-03-21 日本輸送機株式会社 三輪フォークリフトにおけるカウンタウエイトの構造
JP4779039B2 (ja) * 2009-07-02 2011-09-21 株式会社福本ボデー 自走式掃除機
JP6197804B2 (ja) * 2015-02-04 2017-09-20 株式会社豊田自動織機 産業車両
DE102018101539A1 (de) 2018-01-24 2019-07-25 Jungheinrich Aktiengesellschaft Grundrahmen für einen Schubmaststapler
EP3517483A1 (de) 2018-01-24 2019-07-31 Jungheinrich Aktiengesellschaft Schubmaststapler mit einem gegengewicht
CN111170225A (zh) * 2020-03-05 2020-05-19 安徽宇锋仓储设备有限公司 一种平衡重式叉车电子助力及手动转向结构

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2658696A1 (de) † 1976-12-23 1978-06-29 Still Gmbh Rahmen fuer ein kraftfahrzeug
JPS57151473A (en) * 1981-03-13 1982-09-18 Nissan Motor Co Ltd Apparatus for attaching counter weight to tricycle type fork lift
DE3133027A1 (de) † 1981-08-20 1983-03-31 Carl Hurth Maschinen- und Zahnradfabrik GmbH & Co, 8000 München Getriebe fuer ein lenkbares antriebsrad eines fluorfoerderfahrzeugs
WO1984001754A1 (en) * 1982-11-08 1984-05-10 Towmotor Corp Counterweight and axle mounting arrangement
EP0231642A2 (de) * 1986-01-13 1987-08-12 Clark Equipment Company Hubwagen und Verfahren zu dessen Herstellung
EP0391289A1 (de) * 1989-04-04 1990-10-10 Still Gmbh Gabelstapler
JPH04345581A (ja) † 1991-05-23 1992-12-01 Toyota Autom Loom Works Ltd 三輪産業車両の旋回駆動装置
JPH0524555A (ja) * 1991-07-24 1993-02-02 Nissan Motor Co Ltd バツテリー式３輪フオークリフトのフレーム構造
DE9319187U1 (de) * 1993-12-14 1995-01-19 Hurth Getriebe & Zahnraeder Aus E-Motor und Getriebe bestehende Antriebseinheit für ein Flurförderzeug

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2658696A1 (de) † 1976-12-23 1978-06-29 Still Gmbh Rahmen fuer ein kraftfahrzeug
JPS57151473A (en) * 1981-03-13 1982-09-18 Nissan Motor Co Ltd Apparatus for attaching counter weight to tricycle type fork lift
DE3133027A1 (de) † 1981-08-20 1983-03-31 Carl Hurth Maschinen- und Zahnradfabrik GmbH & Co, 8000 München Getriebe fuer ein lenkbares antriebsrad eines fluorfoerderfahrzeugs
WO1984001754A1 (en) * 1982-11-08 1984-05-10 Towmotor Corp Counterweight and axle mounting arrangement
EP0231642A2 (de) * 1986-01-13 1987-08-12 Clark Equipment Company Hubwagen und Verfahren zu dessen Herstellung
EP0391289A1 (de) * 1989-04-04 1990-10-10 Still Gmbh Gabelstapler
JPH04345581A (ja) † 1991-05-23 1992-12-01 Toyota Autom Loom Works Ltd 三輪産業車両の旋回駆動装置
JPH0524555A (ja) * 1991-07-24 1993-02-02 Nissan Motor Co Ltd バツテリー式３輪フオークリフトのフレーム構造
DE9319187U1 (de) * 1993-12-14 1995-01-19 Hurth Getriebe & Zahnraeder Aus E-Motor und Getriebe bestehende Antriebseinheit für ein Flurförderzeug

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 256 (M-179), 15 December 1982 & JP 57 151473 A (NISSAN JIDOSHA KK), 18 September 1982, *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 304 (M-1427), 10 June 1993 & JP 05 024555 A (NISSAN MOTOR CO LTD), 2 February 1993, *
Prospectus STILL Reihe 50 "Der meistgekaufte Elektrogabelstabler" (1987) †
Prospectus STILL Reihe 50 "Der neue Elektrogabelstabler" (1980) †
Prospectus TCM ETB 10,13,15 (publ. before 1987) †

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19849753B4 (de) * 1998-10-28 2008-05-08 Linde Material Handling Gmbh Flurförderzeug mit einem Heckgewicht und einem Verbrennungsmotor
DE19849770B4 (de) * 1998-10-28 2016-03-03 Linde Material Handling Gmbh Gabelstapler
GB2347132A (en) * 1999-02-27 2000-08-30 Translift Engineering Limited Lift truck
EP1298039A1 (de) * 2001-10-01 2003-04-02 Still S.A.R.L. Rahmen für eine mobile Arbeitsmaschine
US7823402B2 (en) 2005-10-04 2010-11-02 Mitsubishi Electric Corporation Air-conditioner unit and method of conveying the same
FR2915741A1 (fr) * 2007-05-03 2008-11-07 M L M Soc Par Actions Simplifi Dispositif formant preparateur de commande
EP1988054A3 (de) * 2007-05-03 2010-04-14 M L M Komissionierfahrzeug
CN107827001A (zh) * 2017-11-06 2018-03-23 陈永 一种汽车配件表面电泳漆处理吊装装置

Also Published As

Publication number Publication date
DE69618699T3 (de) 2006-03-16
JP3067581B2 (ja) 2000-07-17
JPH08282984A (ja) 1996-10-29
EP0738651A3 (de) 1998-03-18
EP0738651B2 (de) 2005-08-10
DE69618699D1 (de) 2002-03-14
DE69618699T2 (de) 2002-09-26
EP0738651B1 (de) 2002-01-23

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