EP3546661A1 - Radlader und verfahren zur änderung der gegengewichtsmontageposition - Google Patents

Radlader und verfahren zur änderung der gegengewichtsmontageposition Download PDF

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Publication number
EP3546661A1
EP3546661A1 EP18771061.1A EP18771061A EP3546661A1 EP 3546661 A1 EP3546661 A1 EP 3546661A1 EP 18771061 A EP18771061 A EP 18771061A EP 3546661 A1 EP3546661 A1 EP 3546661A1
Authority
EP
European Patent Office
Prior art keywords
counterweight
mounting
vehicle body
body frame
width direction
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
EP18771061.1A
Other languages
English (en)
French (fr)
Other versions
EP3546661B1 (de
EP3546661A4 (de
Inventor
Masahide SAKAKIBARA
Toru Naito
Ryohei KIKUZAWA
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Publication of EP3546661A1 publication Critical patent/EP3546661A1/de
Publication of EP3546661A4 publication Critical patent/EP3546661A4/de
Application granted granted Critical
Publication of EP3546661B1 publication Critical patent/EP3546661B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E02F9/18—Counterweights

Definitions

  • the present invention relates to a wheel loader and a method for changing a counterweight mounting position.
  • a counterweight is mounted to a rear end part of a vehicle body frame as a balance weight in a wheel loader (for example, see Patent Document No. 1).
  • Patent Document No. 1 Japanese Patent Laid-open No. 2004-291694
  • an object of the present invention is to provide a wheel loader in which the mounting position of a counterweight can be changed, and a method for changing the mounting position of a counterweight.
  • a wheel loader has a vehicle body frame, a right counterweight detachably mounted to the vehicle body frame, and a left counterweight detachably mounted to the vehicle body frame.
  • the vehicle body frame has a first right counterweight mounting hole for mounting the right counterweight, a second right counterweight mounting hole for mounting the right counterweight, a first left counterweight mounting hole for mounting the left counterweight, and a second left counterweight mounting hole for mounting the left counterweight.
  • a wheel loader with which the mounting position of a counterweight can be changed, and a method for changing the mounting position of a counterweight can be provided.
  • FIG. 1 is a side view of a wheel loader 1 according to an embodiment.
  • “up,” “down,” “front,” “back,” “left,” and “right” are terms used with reference to an operator sitting in the driver's seat.
  • “Vehicle width direction” and “left-right direction” have the same meaning.
  • the wheel loader 1 is used for transporting excavated earth and sand and the like and loading the earth and sand onto a truck or the like.
  • the wheel loader 1 is provided with a front frame 2, a rear frame 3, and a steering cylinder 4.
  • the front frame 2 and the rear frame 3 constitute a vehicle body frame 10 of the wheel loader 1.
  • the front frame 2 is coupled to the rear frame 3 by means of a pin (not illustrated). By extending and contracting the steering cylinder 4, the front frame 2 is able to pivot with respect to the rear frame 3 within the range of a predetermined articulate angle.
  • a lift cylinder 21 and a boom 22 are coupled to the front frame 2. Due to the extension and contraction of the lift cylinder 21, a bucket 24 can be moved upward and downward with the boom 22.
  • a tilt cylinder 23 is coupled to the boom 22. Due to the extension and contraction of the tilt cylinder 23, the bucket 24 is tilted via a bell crank 25 and a link 26.
  • the bucket 24 is an example of a work implement mounted on the wheel loader 1. In addition to a bucket, a fork, a snow removing blade, or the like may be used as the work implement.
  • the rear frame 3 is arranged to the rear of the front frame 2.
  • a cab 31 is arranged on the rear frame 3.
  • the rear frame 3 supports an engine, a transmission, a hydraulic pump, and the like which are not illustrated. Driving power from the engine is transmitted to a front wheel 20 and a rear wheel 30 via an unillustrated power drivetrain.
  • a right counterweight 32 and a left counterweight 33 are detachably mounted to a rear end part of the rear frame 3. However, only the left counterweight 33 is depicted in FIG. 1 .
  • FIG. 2 is a rear view of the wheel loader 1. A state in which the right counterweight 32 and the left counterweight 33 are removed from the vehicle body frame 10 (specifically, the rear frame 3) is depicted in FIG. 2 .
  • FIG. 3A is a rear view of the wheel loader 1 in which the right counterweight 32 is mounted in a first right position and the left counterweight 33 is mounted in a first left position.
  • FIG. 3A represents a front view of the counterweights.
  • FIG. 3B is a top view of the right counterweight 32 mounted in the first right position and the left counterweight 33 mounted in the first left position.
  • FIG. 4A is a rear view of the wheel loader 1 in which the right counterweight 32 is mounted in a second right position and the left counterweight 33 is mounted in a second left position.
  • FIG. 4A represents a front view of the counterweights.
  • FIG. 4B is a top view of the right counterweight 32 mounted in the second right position and the left counterweight 33 mounted in the second left position.
  • the vehicle body frame 10 has a rear plate 11, a right side plate 12, and a left side plate 13.
  • the rear plate 11, the right side plate 12, and the left side plate 13 are all formed as plate-like members.
  • the rear plate 11 is installed upright in the vehicle width direction.
  • the rear plate 11 extends in the vehicle width direction and in the up-down direction.
  • the counterweights 32 and 33 abut the rear plate 11.
  • the right side plate 12 and the left side plate 13 are both installed upright in the front-back direction.
  • the right side plate 12 and the left side plate 13 both extend in the front-back direction and in the up-down direction.
  • the rear plate 11 has three first right counterweight mounting holes 32a, three second right counterweight mounting holes 32b, three first left counterweight mounting holes 33a, and three second left counterweight mounting holes 33b.
  • the first right counterweight mounting holes 32a are used for mounting the right counterweight 32 in the first right position as illustrated in FIG. 3A and 3B .
  • the first right position is a position further to the right than a center line CL which indicates the center in the vehicle width direction of the vehicle body frame 10.
  • the second right counterweight mounting holes 32b are used for mounting the right counterweight 32 in the second right position as illustrated in FIG. 4A and 4B .
  • the second right position is a position further to the right than the center line CL.
  • the second right position is a position that is offset toward the inside in the vehicle width direction from the first right position. Therefore as illustrated in FIG.
  • the second right counterweight mounting holes 32b are positioned to the inside of the first right counterweight mounting holes 32a in the vehicle width direction.
  • the second right counterweight mounting holes 32b are formed in positions which are translated in parallel toward the inside in the vehicle width from the first right counterweight mounting holes 32a.
  • the interval between the first right counterweight mounting holes 32a and the second right counterweight mounting holes 32b is not limited in particular.
  • the first left counterweight mounting holes 33a are used for mounting the left counterweight 33 in the first left position as illustrated in FIG. 3A and 3B .
  • the first left position is a position further to the left than the center line CL which indicates the center in the vehicle width direction of the vehicle body frame 10.
  • the second left counterweight mounting holes 33b are used for mounting the left counterweight 33 in the second left position as illustrated in FIG. 4A and 4B .
  • the second left position is a position further to the left than the center line CL.
  • the second left position is a position that is offset toward the inside in the vehicle width direction from the first left position. Therefore as illustrated in FIG.
  • the second left counterweight mounting holes 33b are positioned to the inside of the first left counterweight mounting holes 33a in the vehicle width direction.
  • the second left counterweight mounting holes 33b are formed in positions which are translated in parallel toward the inside in the vehicle width from the first left counterweight mounting holes 32a.
  • the interval between the first left counterweight mounting holes 33a and the second left counterweight mounting holes 33b is not limited in particular.
  • the right counterweight 32 mounted in the first right position (see FIG. 3A, 3B ) is positioned further to the outside in the width direction than the right counterweight 32 mounted in the second right position (see FIG. 4A, 4B ).
  • the left counterweight 33 mounted in the first left position (see FIG. 3A, 3B ) is positioned further to the outside in the width direction than the left counterweight 33 mounted in the second left position (see FIG. 4A, 4B ).
  • three right bolt through-holes 32c are formed in the right counterweight 32 as illustrated in FIG. 3A and 4A .
  • Fastening bolts 32d are inserted into each of the right bolt through-holes 32c.
  • the right counterweight 32 is secured to the vehicle body frame 10 by fastening the fastening bolts 32d into the first right counterweight mounting holes 32a or the second right counterweight mounting holes 32b.
  • left counterweight 33 is secured to the vehicle body frame 10 by fastening the fastening bolts 33d to the first left counterweight mounting holes 33a or the second left counterweight mounting holes 33b.
  • a right rear lamp 34 is mounted to the right counterweight 32.
  • the right rear lamp 34 is mounted to the rear surface of the right counterweight 32.
  • the right rear lamp 34 is positioned to the inside of the outer edge of the right counterweight 32 when viewing the front surface of the right counterweight 32 as illustrated in FIG. 3A and 4A . Therefore, the right rear lamp 34 does not protrude to the outside of the right counterweight 32.
  • a left rear lamp 35 is mounted to the left counterweight 33.
  • the left rear lamp 35 is mounted to the rear surface of the left counterweight 33.
  • the left rear lamp 35 is positioned to the inside of the outer edge of the left counterweight 33 when viewing the front surface of the left counterweight 33 as illustrated in FIG. 3A and 4A . Therefore, the left rear lamp 35 does not protrude to the outside of the left counterweight 33.
  • a tail lamp, a turn indicator, a back-up lamp, or a brake lamp may be installed in the respective right rear lamp 34 and the left rear lamp 35.
  • a common lamp may be used for the tail lamp and the brake lamp.
  • the interval W1 in the vehicle width direction from the outermost right side of the vehicle body to the right outside edge of the right rear lamp 34 is preferably 400 mm or less
  • the interval W2 in the vehicle width direction from the outermost left side of the vehicle body to the left outside edge of the left rear lamp 35 is preferably 400 mm or less.
  • the interval W3 in the vehicle width direction from the outermost right edge of the vehicle body to the right outer edge of the right rear lamp 34 is greater than the interval W1.
  • the interval W3 may be 400 mm or less or may be greater than 400 mm.
  • the interval W4 in the vehicle width direction from the outermost left edge of the vehicle body to the left outer edge of the left rear lamp 35 is greater than the interval W2.
  • the interval W2 may be 400 mm or less or may be greater than 400 mm.
  • the right outermost edge of the vehicle body may be the right edge of the bucket and the left outermost edge of the vehicle body may be the left edge of the bucket.
  • FIG. 5A is cross-sectional view along line A-A in FIG. 3 .
  • FIG. 5B is a cross-sectional view along line B-B in FIG. 4A .
  • the right harness 36 is electrically connected to the right rear lamp 34.
  • the right harness 36 is inserted into the right counterweight 32 and pulled out of the right counterweight 32 toward the front.
  • the right harness 36 is then inserted through a right harness through-hole 12a formed in the right side plate 12.
  • the right harness through-hole 12a penetrates the right side plate 12.
  • the right harness through-hole 12a is formed in the vehicle width direction. As a result, even when the right counterweight 32 is mounted in either of the first right position or the second right position, the right harness through-hole 12a can be used in common for both cases for laying the right harness 36.
  • a left harness connected to the left rear lamp 35 is also inserted through a left harness through-hole formed in the left side plate 13 in the same way as the right harness 36.
  • a method for changing the mounting positions of right counterweight 32 and left counterweight 33 will be explained below. The following is an explanation of a case in which, after mounting the right counterweight 32 in the first right position and mounting the left counterweight 33 in the first left position for traveling on public roads, the right counterweight 32 is mounted in the second right position and the left counterweight 33 is mounted in the second left position for improving work efficiency at the work site.
  • the positions of the first right counterweight mounting holes 32a of the vehicle body frame 10 and the positions of the right bolt through-holes 32c of the right counterweight 32 are aligned, and the fastening bolts 32d are fastened to the first right counterweight mounting holes 32a.
  • the positions of the first left counterweight mounting holes 33a of the vehicle body frame 10 and the positions of the left bolt through-holes 33c of the left counterweight 33 are aligned, and the fastening bolts 33d are fastened to the first left counterweight mounting holes 32a.
  • the right counterweight 32 is mounted in the first right position and the left counterweight 33 is mounted in the first left position. As a result, traveling on public roads is possible while meeting safety standards.
  • the positions of the second left counterweight mounting holes 33b of the vehicle body frame 10 and the positions of the left bolt through-holes 33c of the left counterweight 33 are aligned, and the fastening bolts 33d are fastened to the second left counterweight mounting holes 33b.
  • the right counterweight 32 is mounted in the second right position and the left counterweight 33 is mounted in the second left position.
  • work efficiency can be improved because interference with the counterweights 32 and 33 by surrounding structures and the like at the work site can be suppressed.
  • the same effect can also be achieved by positioning the left rear lamp 35 to the inside of the outer edge of the left counterweight 33.
  • the present invention is not limited in this way.
  • the number of each of the mounting holes is not limited in particular, and the number of each of the mounting holes may be different. However, it is preferable that the counterweights be mounted with at least two mounting holes.
  • the present invention is not limited in this way.
  • the right rear lamp 34 may be arranged in a recessed part formed on the rear surface of the right counterweight 32.
  • the right rear lamp 34 may be mounted on the upper surface, the lower surface, or the side surface of the right counterweight 32.
  • the left rear lamp 35 is mounted to the rear surface of the left counterweight 33 in the above embodiment, the present invention is not limited in this way.
  • the present invention is not limited in this way.
  • the rear plate 11 may have one type of left and right mounting holes and the counterweights 32 and 33 may each have two types of bolt through-holes.
  • the rear plate 11 has three right counterweight mounting holes 32e and three left counterweight mounting holes 33e.
  • the right counterweight 32 has three first right bolt through-holes 32f and three second right bolt through-holes 32g.
  • the first right bolt through-holes 32f are used for mounting the right counterweight 32 in the first right position (see FIG. 3 )
  • the second right bolt through-holes 32g are used for mounting the right counterweight 32 in the second right position (see FIG. 4 ).
  • the left counterweight 33 has three first left bolt through-holes 33f and three second left bolt through-holes 33g.
  • the first left bolt through-holes 33f are used for mounting the left counterweight 33 in the first left position (see FIG. 3 )
  • the second left bolt through-holes 33g are used for mounting the left counterweight 33 in the second left position (see FIG. 4 ).
  • the mounting positions of the counterweights 32 and 33 can be changed in response to the situation in which the wheel loader 1 is to be used.
EP18771061.1A 2017-03-24 2018-03-15 Radlader Active EP3546661B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017058482 2017-03-24
PCT/JP2018/010172 WO2018173914A1 (ja) 2017-03-24 2018-03-15 ホイールローダ及びカウンタウェイトの取付位置変更方法

Publications (3)

Publication Number Publication Date
EP3546661A1 true EP3546661A1 (de) 2019-10-02
EP3546661A4 EP3546661A4 (de) 2020-06-10
EP3546661B1 EP3546661B1 (de) 2023-07-19

Family

ID=63586363

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18771061.1A Active EP3546661B1 (de) 2017-03-24 2018-03-15 Radlader

Country Status (3)

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EP (1) EP3546661B1 (de)
JP (1) JP7133542B2 (de)
WO (1) WO2018173914A1 (de)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59180969U (ja) * 1983-05-20 1984-12-03 ヤンマー農機株式会社 農用トラクタ−のリヤウエイト取付装置
JPS62190755U (de) * 1986-05-20 1987-12-04
JPH0717652Y2 (ja) * 1989-02-06 1995-04-26 株式会社クボタ トラクタにおけるバランスウエイトの取付構造
JPH0771909B2 (ja) * 1990-05-11 1995-08-02 株式会社豊田自動織機製作所 フォークリフトトラックのリアランプ取付け構造
JP3176042B2 (ja) * 1997-10-06 2001-06-11 ティー・シー・エム株式会社 カウンタウエイト
JP3983702B2 (ja) 2003-03-25 2007-09-26 株式会社クボタ ホイールローダ
US20120153605A1 (en) * 2010-12-20 2012-06-21 Caterpillar Inc. Counterweight system
US8430427B1 (en) * 2011-06-06 2013-04-30 Excel Industries, Inc. Counterweight apparatus for vehicles
JP6555780B2 (ja) * 2016-03-14 2019-08-07 日立建機株式会社 建設機械

Also Published As

Publication number Publication date
EP3546661B1 (de) 2023-07-19
JPWO2018173914A1 (ja) 2020-01-23
JP7133542B2 (ja) 2022-09-08
EP3546661A4 (de) 2020-06-10
WO2018173914A1 (ja) 2018-09-27

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